diff options
| author | ubq323 <ubq323@ubq323.website> | 2022-04-07 22:22:00 +0100 |
|---|---|---|
| committer | ubq323 <ubq323@ubq323.website> | 2022-04-07 22:22:00 +0100 |
| commit | ad03a0b0812bb8e15e5aa078d7c01eef5ebbdf2e (patch) | |
| tree | 3641114fa3e5d38d072c5a9cbfd8e871be0feeb1 /vendor | |
| parent | 4ec2e421bd05fb178c5bf8317606b4fadd622b54 (diff) | |
restructure
Diffstat (limited to 'vendor')
| -rw-r--r-- | vendor/bump.lua | 773 | ||||
| -rw-r--r-- | vendor/fennel.lua | 5173 |
2 files changed, 5946 insertions, 0 deletions
diff --git a/vendor/bump.lua b/vendor/bump.lua new file mode 100644 index 0000000..6dabca7 --- /dev/null +++ b/vendor/bump.lua @@ -0,0 +1,773 @@ +local bump = { + _VERSION = 'bump v3.1.7', + _URL = 'https://github.com/kikito/bump.lua', + _DESCRIPTION = 'A collision detection library for Lua', + _LICENSE = [[ + MIT LICENSE + + Copyright (c) 2014 Enrique García Cota + + Permission is hereby granted, free of charge, to any person obtaining a + copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + ]] +} + +------------------------------------------ +-- Auxiliary functions +------------------------------------------ +local DELTA = 1e-10 -- floating-point margin of error + +local abs, floor, ceil, min, max = math.abs, math.floor, math.ceil, math.min, math.max + +local function sign(x) + if x > 0 then return 1 end + if x == 0 then return 0 end + return -1 +end + +local function nearest(x, a, b) + if abs(a - x) < abs(b - x) then return a else return b end +end + +local function assertType(desiredType, value, name) + if type(value) ~= desiredType then + error(name .. ' must be a ' .. desiredType .. ', but was ' .. tostring(value) .. '(a ' .. type(value) .. ')') + end +end + +local function assertIsPositiveNumber(value, name) + if type(value) ~= 'number' or value <= 0 then + error(name .. ' must be a positive integer, but was ' .. tostring(value) .. '(' .. type(value) .. ')') + end +end + +local function assertIsRect(x,y,w,h) + assertType('number', x, 'x') + assertType('number', y, 'y') + assertIsPositiveNumber(w, 'w') + assertIsPositiveNumber(h, 'h') +end + +local defaultFilter = function() + return 'slide' +end + +------------------------------------------ +-- Rectangle functions +------------------------------------------ + +local function rect_getNearestCorner(x,y,w,h, px, py) + return nearest(px, x, x+w), nearest(py, y, y+h) +end + +-- This is a generalized implementation of the liang-barsky algorithm, which also returns +-- the normals of the sides where the segment intersects. +-- Returns nil if the segment never touches the rect +-- Notice that normals are only guaranteed to be accurate when initially ti1, ti2 == -math.huge, math.huge +local function rect_getSegmentIntersectionIndices(x,y,w,h, x1,y1,x2,y2, ti1,ti2) + ti1, ti2 = ti1 or 0, ti2 or 1 + local dx, dy = x2-x1, y2-y1 + local nx, ny + local nx1, ny1, nx2, ny2 = 0,0,0,0 + local p, q, r + + for side = 1,4 do + if side == 1 then nx,ny,p,q = -1, 0, -dx, x1 - x -- left + elseif side == 2 then nx,ny,p,q = 1, 0, dx, x + w - x1 -- right + elseif side == 3 then nx,ny,p,q = 0, -1, -dy, y1 - y -- top + else nx,ny,p,q = 0, 1, dy, y + h - y1 -- bottom + end + + if p == 0 then + if q <= 0 then return nil end + else + r = q / p + if p < 0 then + if r > ti2 then return nil + elseif r > ti1 then ti1,nx1,ny1 = r,nx,ny + end + else -- p > 0 + if r < ti1 then return nil + elseif r < ti2 then ti2,nx2,ny2 = r,nx,ny + end + end + end + end + + return ti1,ti2, nx1,ny1, nx2,ny2 +end + +-- Calculates the minkowsky difference between 2 rects, which is another rect +local function rect_getDiff(x1,y1,w1,h1, x2,y2,w2,h2) + return x2 - x1 - w1, + y2 - y1 - h1, + w1 + w2, + h1 + h2 +end + +local function rect_containsPoint(x,y,w,h, px,py) + return px - x > DELTA and py - y > DELTA and + x + w - px > DELTA and y + h - py > DELTA +end + +local function rect_isIntersecting(x1,y1,w1,h1, x2,y2,w2,h2) + return x1 < x2+w2 and x2 < x1+w1 and + y1 < y2+h2 and y2 < y1+h1 +end + +local function rect_getSquareDistance(x1,y1,w1,h1, x2,y2,w2,h2) + local dx = x1 - x2 + (w1 - w2)/2 + local dy = y1 - y2 + (h1 - h2)/2 + return dx*dx + dy*dy +end + +local function rect_detectCollision(x1,y1,w1,h1, x2,y2,w2,h2, goalX, goalY) + goalX = goalX or x1 + goalY = goalY or y1 + + local dx, dy = goalX - x1, goalY - y1 + local x,y,w,h = rect_getDiff(x1,y1,w1,h1, x2,y2,w2,h2) + + local overlaps, ti, nx, ny + + if rect_containsPoint(x,y,w,h, 0,0) then -- item was intersecting other + local px, py = rect_getNearestCorner(x,y,w,h, 0, 0) + local wi, hi = min(w1, abs(px)), min(h1, abs(py)) -- area of intersection + ti = -wi * hi -- ti is the negative area of intersection + overlaps = true + else + local ti1,ti2,nx1,ny1 = rect_getSegmentIntersectionIndices(x,y,w,h, 0,0,dx,dy, -math.huge, math.huge) + + -- item tunnels into other + if ti1 + and ti1 < 1 + and (abs(ti1 - ti2) >= DELTA) -- special case for rect going through another rect's corner + and (0 < ti1 + DELTA + or 0 == ti1 and ti2 > 0) + then + ti, nx, ny = ti1, nx1, ny1 + overlaps = false + end + end + + if not ti then return end + + local tx, ty + + if overlaps then + if dx == 0 and dy == 0 then + -- intersecting and not moving - use minimum displacement vector + local px, py = rect_getNearestCorner(x,y,w,h, 0,0) + if abs(px) < abs(py) then py = 0 else px = 0 end + nx, ny = sign(px), sign(py) + tx, ty = x1 + px, y1 + py + else + -- intersecting and moving - move in the opposite direction + local ti1, _ + ti1,_,nx,ny = rect_getSegmentIntersectionIndices(x,y,w,h, 0,0,dx,dy, -math.huge, 1) + if not ti1 then return end + tx, ty = x1 + dx * ti1, y1 + dy * ti1 + end + else -- tunnel + tx, ty = x1 + dx * ti, y1 + dy * ti + end + + return { + overlaps = overlaps, + ti = ti, + move = {x = dx, y = dy}, + normal = {x = nx, y = ny}, + touch = {x = tx, y = ty}, + itemRect = {x = x1, y = y1, w = w1, h = h1}, + otherRect = {x = x2, y = y2, w = w2, h = h2} + } +end + +------------------------------------------ +-- Grid functions +------------------------------------------ + +local function grid_toWorld(cellSize, cx, cy) + return (cx - 1)*cellSize, (cy-1)*cellSize +end + +local function grid_toCell(cellSize, x, y) + return floor(x / cellSize) + 1, floor(y / cellSize) + 1 +end + +-- grid_traverse* functions are based on "A Fast Voxel Traversal Algorithm for Ray Tracing", +-- by John Amanides and Andrew Woo - http://www.cse.yorku.ca/~amana/research/grid.pdf +-- It has been modified to include both cells when the ray "touches a grid corner", +-- and with a different exit condition + +local function grid_traverse_initStep(cellSize, ct, t1, t2) + local v = t2 - t1 + if v > 0 then + return 1, cellSize / v, ((ct + v) * cellSize - t1) / v + elseif v < 0 then + return -1, -cellSize / v, ((ct + v - 1) * cellSize - t1) / v + else + return 0, math.huge, math.huge + end +end + +local function grid_traverse(cellSize, x1,y1,x2,y2, f) + local cx1,cy1 = grid_toCell(cellSize, x1,y1) + local cx2,cy2 = grid_toCell(cellSize, x2,y2) + local stepX, dx, tx = grid_traverse_initStep(cellSize, cx1, x1, x2) + local stepY, dy, ty = grid_traverse_initStep(cellSize, cy1, y1, y2) + local cx,cy = cx1,cy1 + + f(cx, cy) + + -- The default implementation had an infinite loop problem when + -- approaching the last cell in some occassions. We finish iterating + -- when we are *next* to the last cell + while abs(cx - cx2) + abs(cy - cy2) > 1 do + if tx < ty then + tx, cx = tx + dx, cx + stepX + f(cx, cy) + else + -- Addition: include both cells when going through corners + if tx == ty then f(cx + stepX, cy) end + ty, cy = ty + dy, cy + stepY + f(cx, cy) + end + end + + -- If we have not arrived to the last cell, use it + if cx ~= cx2 or cy ~= cy2 then f(cx2, cy2) end + +end + +local function grid_toCellRect(cellSize, x,y,w,h) + local cx,cy = grid_toCell(cellSize, x, y) + local cr,cb = ceil((x+w) / cellSize), ceil((y+h) / cellSize) + return cx, cy, cr - cx + 1, cb - cy + 1 +end + +------------------------------------------ +-- Responses +------------------------------------------ + +local touch = function(world, col, x,y,w,h, goalX, goalY, filter) + return col.touch.x, col.touch.y, {}, 0 +end + +local cross = function(world, col, x,y,w,h, goalX, goalY, filter) + local cols, len = world:project(col.item, x,y,w,h, goalX, goalY, filter) + return goalX, goalY, cols, len +end + +local slide = function(world, col, x,y,w,h, goalX, goalY, filter) + goalX = goalX or x + goalY = goalY or y + + local tch, move = col.touch, col.move + if move.x ~= 0 or move.y ~= 0 then + if col.normal.x ~= 0 then + goalX = tch.x + else + goalY = tch.y + end + end + + col.slide = {x = goalX, y = goalY} + + x,y = tch.x, tch.y + local cols, len = world:project(col.item, x,y,w,h, goalX, goalY, filter) + return goalX, goalY, cols, len +end + +local bounce = function(world, col, x,y,w,h, goalX, goalY, filter) + goalX = goalX or x + goalY = goalY or y + + local tch, move = col.touch, col.move + local tx, ty = tch.x, tch.y + + local bx, by = tx, ty + + if move.x ~= 0 or move.y ~= 0 then + local bnx, bny = goalX - tx, goalY - ty + if col.normal.x == 0 then bny = -bny else bnx = -bnx end + bx, by = tx + bnx, ty + bny + end + + col.bounce = {x = bx, y = by} + x,y = tch.x, tch.y + goalX, goalY = bx, by + + local cols, len = world:project(col.item, x,y,w,h, goalX, goalY, filter) + return goalX, goalY, cols, len +end + +------------------------------------------ +-- World +------------------------------------------ + +local World = {} +local World_mt = {__index = World} + +-- Private functions and methods + +local function sortByWeight(a,b) return a.weight < b.weight end + +local function sortByTiAndDistance(a,b) + if a.ti == b.ti then + local ir, ar, br = a.itemRect, a.otherRect, b.otherRect + local ad = rect_getSquareDistance(ir.x,ir.y,ir.w,ir.h, ar.x,ar.y,ar.w,ar.h) + local bd = rect_getSquareDistance(ir.x,ir.y,ir.w,ir.h, br.x,br.y,br.w,br.h) + return ad < bd + end + return a.ti < b.ti +end + +local function addItemToCell(self, item, cx, cy) + self.rows[cy] = self.rows[cy] or setmetatable({}, {__mode = 'v'}) + local row = self.rows[cy] + row[cx] = row[cx] or {itemCount = 0, x = cx, y = cy, items = setmetatable({}, {__mode = 'k'})} + local cell = row[cx] + self.nonEmptyCells[cell] = true + if not cell.items[item] then + cell.items[item] = true + cell.itemCount = cell.itemCount + 1 + end +end + +local function removeItemFromCell(self, item, cx, cy) + local row = self.rows[cy] + if not row or not row[cx] or not row[cx].items[item] then return false end + + local cell = row[cx] + cell.items[item] = nil + cell.itemCount = cell.itemCount - 1 + if cell.itemCount == 0 then + self.nonEmptyCells[cell] = nil + end + return true +end + +local function getDictItemsInCellRect(self, cl,ct,cw,ch) + local items_dict = {} + for cy=ct,ct+ch-1 do + local row = self.rows[cy] + if row then + for cx=cl,cl+cw-1 do + local cell = row[cx] + if cell and cell.itemCount > 0 then -- no cell.itemCount > 1 because tunneling + for item,_ in pairs(cell.items) do + items_dict[item] = true + end + end + end + end + end + + return items_dict +end + +local function getCellsTouchedBySegment(self, x1,y1,x2,y2) + + local cells, cellsLen, visited = {}, 0, {} + + grid_traverse(self.cellSize, x1,y1,x2,y2, function(cx, cy) + local row = self.rows[cy] + if not row then return end + local cell = row[cx] + if not cell or visited[cell] then return end + + visited[cell] = true + cellsLen = cellsLen + 1 + cells[cellsLen] = cell + end) + + return cells, cellsLen +end + +local function getInfoAboutItemsTouchedBySegment(self, x1,y1, x2,y2, filter) + local cells, len = getCellsTouchedBySegment(self, x1,y1,x2,y2) + local cell, rect, l,t,w,h, ti1,ti2, tii0,tii1 + local visited, itemInfo, itemInfoLen = {},{},0 + for i=1,len do + cell = cells[i] + for item in pairs(cell.items) do + if not visited[item] then + visited[item] = true + if (not filter or filter(item)) then + rect = self.rects[item] + l,t,w,h = rect.x,rect.y,rect.w,rect.h + + ti1,ti2 = rect_getSegmentIntersectionIndices(l,t,w,h, x1,y1, x2,y2, 0, 1) + if ti1 and ((0 < ti1 and ti1 < 1) or (0 < ti2 and ti2 < 1)) then + -- the sorting is according to the t of an infinite line, not the segment + tii0,tii1 = rect_getSegmentIntersectionIndices(l,t,w,h, x1,y1, x2,y2, -math.huge, math.huge) + itemInfoLen = itemInfoLen + 1 + itemInfo[itemInfoLen] = {item = item, ti1 = ti1, ti2 = ti2, weight = min(tii0,tii1)} + end + end + end + end + end + table.sort(itemInfo, sortByWeight) + return itemInfo, itemInfoLen +end + +local function getResponseByName(self, name) + local response = self.responses[name] + if not response then + error(('Unknown collision type: %s (%s)'):format(name, type(name))) + end + return response +end + + +-- Misc Public Methods + +function World:addResponse(name, response) + self.responses[name] = response +end + +function World:project(item, x,y,w,h, goalX, goalY, filter) + assertIsRect(x,y,w,h) + + goalX = goalX or x + goalY = goalY or y + filter = filter or defaultFilter + + local collisions, len = {}, 0 + + local visited = {} + if item ~= nil then visited[item] = true end + + -- This could probably be done with less cells using a polygon raster over the cells instead of a + -- bounding rect of the whole movement. Conditional to building a queryPolygon method + local tl, tt = min(goalX, x), min(goalY, y) + local tr, tb = max(goalX + w, x+w), max(goalY + h, y+h) + local tw, th = tr-tl, tb-tt + + local cl,ct,cw,ch = grid_toCellRect(self.cellSize, tl,tt,tw,th) + + local dictItemsInCellRect = getDictItemsInCellRect(self, cl,ct,cw,ch) + + for other,_ in pairs(dictItemsInCellRect) do + if not visited[other] then + visited[other] = true + + local responseName = filter(item, other) + if responseName then + local ox,oy,ow,oh = self:getRect(other) + local col = rect_detectCollision(x,y,w,h, ox,oy,ow,oh, goalX, goalY) + + if col then + col.other = other + col.item = item + col.type = responseName + + len = len + 1 + collisions[len] = col + end + end + end + end + + table.sort(collisions, sortByTiAndDistance) + + return collisions, len +end + +function World:countCells() + local count = 0 + for _,row in pairs(self.rows) do + for _,_ in pairs(row) do + count = count + 1 + end + end + return count +end + +function World:hasItem(item) + return not not self.rects[item] +end + +function World:getItems() + local items, len = {}, 0 + for item,_ in pairs(self.rects) do + len = len + 1 + items[len] = item + end + return items, len +end + +function World:countItems() + local len = 0 + for _ in pairs(self.rects) do len = len + 1 end + return len +end + +function World:getRect(item) + local rect = self.rects[item] + if not rect then + error('Item ' .. tostring(item) .. ' must be added to the world before getting its rect. Use world:add(item, x,y,w,h) to add it first.') + end + return rect.x, rect.y, rect.w, rect.h +end + +function World:toWorld(cx, cy) + return grid_toWorld(self.cellSize, cx, cy) +end + +function World:toCell(x,y) + return grid_toCell(self.cellSize, x, y) +end + + +--- Query methods + +function World:queryRect(x,y,w,h, filter) + + assertIsRect(x,y,w,h) + + local cl,ct,cw,ch = grid_toCellRect(self.cellSize, x,y,w,h) + local dictItemsInCellRect = getDictItemsInCellRect(self, cl,ct,cw,ch) + + local items, len = {}, 0 + + local rect + for item,_ in pairs(dictItemsInCellRect) do + rect = self.rects[item] + if (not filter or filter(item)) + and rect_isIntersecting(x,y,w,h, rect.x, rect.y, rect.w, rect.h) + then + len = len + 1 + items[len] = item + end + end + + return items, len +end + +function World:queryPoint(x,y, filter) + local cx,cy = self:toCell(x,y) + local dictItemsInCellRect = getDictItemsInCellRect(self, cx,cy,1,1) + + local items, len = {}, 0 + + local rect + for item,_ in pairs(dictItemsInCellRect) do + rect = self.rects[item] + if (not filter or filter(item)) + and rect_containsPoint(rect.x, rect.y, rect.w, rect.h, x, y) + then + len = len + 1 + items[len] = item + end + end + + return items, len +end + +function World:querySegment(x1, y1, x2, y2, filter) + local itemInfo, len = getInfoAboutItemsTouchedBySegment(self, x1, y1, x2, y2, filter) + local items = {} + for i=1, len do + items[i] = itemInfo[i].item + end + return items, len +end + +function World:querySegmentWithCoords(x1, y1, x2, y2, filter) + local itemInfo, len = getInfoAboutItemsTouchedBySegment(self, x1, y1, x2, y2, filter) + local dx, dy = x2-x1, y2-y1 + local info, ti1, ti2 + for i=1, len do + info = itemInfo[i] + ti1 = info.ti1 + ti2 = info.ti2 + + info.weight = nil + info.x1 = x1 + dx * ti1 + info.y1 = y1 + dy * ti1 + info.x2 = x1 + dx * ti2 + info.y2 = y1 + dy * ti2 + end + return itemInfo, len +end + + +--- Main methods + +function World:add(item, x,y,w,h) + local rect = self.rects[item] + if rect then + error('Item ' .. tostring(item) .. ' added to the world twice.') + end + assertIsRect(x,y,w,h) + + self.rects[item] = {x=x,y=y,w=w,h=h} + + local cl,ct,cw,ch = grid_toCellRect(self.cellSize, x,y,w,h) + for cy = ct, ct+ch-1 do + for cx = cl, cl+cw-1 do + addItemToCell(self, item, cx, cy) + end + end + + return item +end + +function World:remove(item) + local x,y,w,h = self:getRect(item) + + self.rects[item] = nil + local cl,ct,cw,ch = grid_toCellRect(self.cellSize, x,y,w,h) + for cy = ct, ct+ch-1 do + for cx = cl, cl+cw-1 do + removeItemFromCell(self, item, cx, cy) + end + end +end + +function World:update(item, x2,y2,w2,h2) + local x1,y1,w1,h1 = self:getRect(item) + w2,h2 = w2 or w1, h2 or h1 + assertIsRect(x2,y2,w2,h2) + + if x1 ~= x2 or y1 ~= y2 or w1 ~= w2 or h1 ~= h2 then + + local cellSize = self.cellSize + local cl1,ct1,cw1,ch1 = grid_toCellRect(cellSize, x1,y1,w1,h1) + local cl2,ct2,cw2,ch2 = grid_toCellRect(cellSize, x2,y2,w2,h2) + + if cl1 ~= cl2 or ct1 ~= ct2 or cw1 ~= cw2 or ch1 ~= ch2 then + + local cr1, cb1 = cl1+cw1-1, ct1+ch1-1 + local cr2, cb2 = cl2+cw2-1, ct2+ch2-1 + local cyOut + + for cy = ct1, cb1 do + cyOut = cy < ct2 or cy > cb2 + for cx = cl1, cr1 do + if cyOut or cx < cl2 or cx > cr2 then + removeItemFromCell(self, item, cx, cy) + end + end + end + + for cy = ct2, cb2 do + cyOut = cy < ct1 or cy > cb1 + for cx = cl2, cr2 do + if cyOut or cx < cl1 or cx > cr1 then + addItemToCell(self, item, cx, cy) + end + end + end + + end + + local rect = self.rects[item] + rect.x, rect.y, rect.w, rect.h = x2,y2,w2,h2 + + end +end + +function World:move(item, goalX, goalY, filter) + local actualX, actualY, cols, len = self:check(item, goalX, goalY, filter) + + self:update(item, actualX, actualY) + + return actualX, actualY, cols, len +end + +function World:check(item, goalX, goalY, filter) + filter = filter or defaultFilter + + local visited = {[item] = true} + local visitedFilter = function(itm, other) + if visited[other] then return false end + return filter(itm, other) + end + + local cols, len = {}, 0 + + local x,y,w,h = self:getRect(item) + + local projected_cols, projected_len = self:project(item, x,y,w,h, goalX,goalY, visitedFilter) + + while projected_len > 0 do + local col = projected_cols[1] + len = len + 1 + cols[len] = col + + visited[col.other] = true + + local response = getResponseByName(self, col.type) + + goalX, goalY, projected_cols, projected_len = response( + self, + col, + x, y, w, h, + goalX, goalY, + visitedFilter + ) + end + + return goalX, goalY, cols, len +end + + +-- Public library functions + +bump.newWorld = function(cellSize) + cellSize = cellSize or 64 + assertIsPositiveNumber(cellSize, 'cellSize') + local world = setmetatable({ + cellSize = cellSize, + rects = {}, + rows = {}, + nonEmptyCells = {}, + responses = {} + }, World_mt) + + world:addResponse('touch', touch) + world:addResponse('cross', cross) + world:addResponse('slide', slide) + world:addResponse('bounce', bounce) + + return world +end + +bump.rect = { + getNearestCorner = rect_getNearestCorner, + getSegmentIntersectionIndices = rect_getSegmentIntersectionIndices, + getDiff = rect_getDiff, + containsPoint = rect_containsPoint, + isIntersecting = rect_isIntersecting, + getSquareDistance = rect_getSquareDistance, + detectCollision = rect_detectCollision +} + +bump.responses = { + touch = touch, + cross = cross, + slide = slide, + bounce = bounce +} + +return bump diff --git a/vendor/fennel.lua b/vendor/fennel.lua new file mode 100644 index 0000000..8f158ee --- /dev/null +++ b/vendor/fennel.lua @@ -0,0 +1,5173 @@ +package.preload["fennel.repl"] = package.preload["fennel.repl"] or function(...) + local utils = require("fennel.utils") + local parser = require("fennel.parser") + local compiler = require("fennel.compiler") + local specials = require("fennel.specials") + local view = require("fennel.view") + local unpack = (table.unpack or _G.unpack) + local function default_read_chunk(parser_state) + local function _519_() + if (0 < parser_state["stack-size"]) then + return ".." + else + return ">> " + end + end + io.write(_519_()) + io.flush() + local input = io.read() + return (input and (input .. "\n")) + end + local function default_on_values(xs) + io.write(table.concat(xs, "\9")) + return io.write("\n") + end + local function default_on_error(errtype, err, lua_source) + local function _521_() + local _520_ = errtype + if (_520_ == "Lua Compile") then + return ("Bad code generated - likely a bug with the compiler:\n" .. "--- Generated Lua Start ---\n" .. lua_source .. "--- Generated Lua End ---\n") + elseif (_520_ == "Runtime") then + return (compiler.traceback(tostring(err), 4) .. "\n") + elseif true then + local _ = _520_ + return ("%s error: %s\n"):format(errtype, tostring(err)) + else + return nil + end + end + return io.write(_521_()) + end + local save_source = table.concat({"local ___i___ = 1", "while true do", " local name, value = debug.getlocal(1, ___i___)", " if(name and name ~= \"___i___\") then", " ___replLocals___[name] = value", " ___i___ = ___i___ + 1", " else break end end"}, "\n") + local function splice_save_locals(env, lua_source) + local spliced_source = {} + local bind = "local %s = ___replLocals___['%s']" + for line in lua_source:gmatch("([^\n]+)\n?") do + table.insert(spliced_source, line) + end + for name in pairs(env.___replLocals___) do + table.insert(spliced_source, 1, bind:format(name, name)) + end + if ((1 < #spliced_source) and (spliced_source[#spliced_source]):match("^ *return .*$")) then + table.insert(spliced_source, #spliced_source, save_source) + else + end + return table.concat(spliced_source, "\n") + end + local function completer(env, scope, text) + local matches = {} + local input_fragment = text:gsub(".*[%s)(]+", "") + local stop_looking_3f = false + local function add_partials(input, tbl, prefix, method_3f) + for k in utils.allpairs(tbl) do + local k0 + if ((tbl == env) or (tbl == env.___replLocals___)) then + k0 = scope.unmanglings[k] + else + k0 = k + end + if ((#matches < 2000) and (type(k0) == "string") and (input == k0:sub(0, #input)) and (not method_3f or ("function" == type(tbl[k0])))) then + local function _525_() + if method_3f then + return (prefix .. ":" .. k0) + else + return (prefix .. k0) + end + end + table.insert(matches, _525_()) + else + end + end + return nil + end + local function descend(input, tbl, prefix, add_matches, method_3f) + local splitter + if method_3f then + splitter = "^([^:]+):(.*)" + else + splitter = "^([^.]+)%.(.*)" + end + local head, tail = input:match(splitter) + local raw_head = (scope.manglings[head] or head) + if (type(tbl[raw_head]) == "table") then + stop_looking_3f = true + if method_3f then + return add_partials(tail, tbl[raw_head], (prefix .. head), true) + else + return add_matches(tail, tbl[raw_head], (prefix .. head)) + end + else + return nil + end + end + local function add_matches(input, tbl, prefix) + local prefix0 + if prefix then + prefix0 = (prefix .. ".") + else + prefix0 = "" + end + if (not input:find("%.") and input:find(":")) then + return descend(input, tbl, prefix0, add_matches, true) + elseif not input:find("%.") then + return add_partials(input, tbl, prefix0) + else + return descend(input, tbl, prefix0, add_matches, false) + end + end + for _, source in ipairs({scope.specials, scope.macros, (env.___replLocals___ or {}), env, env._G}) do + if stop_looking_3f then break end + add_matches(input_fragment, source) + end + return matches + end + local commands = {} + local function command_3f(input) + return input:match("^%s*,") + end + local function command_docs() + local _532_ + do + local tbl_14_auto = {} + local i_15_auto = #tbl_14_auto + for name, f in pairs(commands) do + local val_16_auto = (" ,%s - %s"):format(name, ((compiler.metadata):get(f, "fnl/docstring") or "undocumented")) + if (nil ~= val_16_auto) then + i_15_auto = (i_15_auto + 1) + do end (tbl_14_auto)[i_15_auto] = val_16_auto + else + end + end + _532_ = tbl_14_auto + end + return table.concat(_532_, "\n") + end + commands.help = function(_, _0, on_values) + return on_values({("Welcome to Fennel.\nThis is the REPL where you can enter code to be evaluated.\nYou can also run these repl commands:\n\n" .. command_docs() .. "\n ,exit - Leave the repl.\n\nUse ,doc something to see descriptions for individual macros and special forms.\n\nFor more information about the language, see https://fennel-lang.org/reference")}) + end + do end (compiler.metadata):set(commands.help, "fnl/docstring", "Show this message.") + local function reload(module_name, env, on_values, on_error) + local _534_, _535_ = pcall(specials["load-code"]("return require(...)", env), module_name) + if ((_534_ == true) and (nil ~= _535_)) then + local old = _535_ + local _ + package.loaded[module_name] = nil + _ = nil + local ok, new = pcall(require, module_name) + local new0 + if not ok then + on_values({new}) + new0 = old + else + new0 = new + end + if ((type(old) == "table") and (type(new0) == "table")) then + for k, v in pairs(new0) do + old[k] = v + end + for k in pairs(old) do + if (nil == (new0)[k]) then + old[k] = nil + else + end + end + package.loaded[module_name] = old + else + end + return on_values({"ok"}) + elseif ((_534_ == false) and (nil ~= _535_)) then + local msg = _535_ + local function _540_() + local _539_ = msg:gsub("\n.*", "") + return _539_ + end + return on_error("Runtime", _540_()) + else + return nil + end + end + local function run_command(read, on_error, f) + local _542_, _543_, _544_ = pcall(read) + if ((_542_ == true) and (_543_ == true) and (nil ~= _544_)) then + local val = _544_ + return f(val) + elseif (_542_ == false) then + return on_error("Parse", "Couldn't parse input.") + else + return nil + end + end + commands.reload = function(env, read, on_values, on_error) + local function _546_(_241) + return reload(tostring(_241), env, on_values, on_error) + end + return run_command(read, on_error, _546_) + end + do end (compiler.metadata):set(commands.reload, "fnl/docstring", "Reload the specified module.") + commands.reset = function(env, _, on_values) + env.___replLocals___ = {} + return on_values({"ok"}) + end + do end (compiler.metadata):set(commands.reset, "fnl/docstring", "Erase all repl-local scope.") + commands.complete = function(env, read, on_values, on_error, scope, chars) + local function _547_() + return on_values(completer(env, scope, string.char(unpack(chars)):gsub(",complete +", ""):sub(1, -2))) + end + return run_command(read, on_error, _547_) + end + do end (compiler.metadata):set(commands.complete, "fnl/docstring", "Print all possible completions for a given input symbol.") + local function apropos_2a(pattern, tbl, prefix, seen, names) + for name, subtbl in pairs(tbl) do + if (("string" == type(name)) and (package ~= subtbl)) then + local _548_ = type(subtbl) + if (_548_ == "function") then + if ((prefix .. name)):match(pattern) then + table.insert(names, (prefix .. name)) + else + end + elseif (_548_ == "table") then + if not seen[subtbl] then + local _551_ + do + local _550_ = seen + _550_[subtbl] = true + _551_ = _550_ + end + apropos_2a(pattern, subtbl, (prefix .. name:gsub("%.", "/") .. "."), _551_, names) + else + end + else + end + else + end + end + return names + end + local function apropos(pattern) + local names = apropos_2a(pattern, package.loaded, "", {}, {}) + local tbl_14_auto = {} + local i_15_auto = #tbl_14_auto + for _, name in ipairs(names) do + local val_16_auto = name:gsub("^_G%.", "") + if (nil ~= val_16_auto) then + i_15_auto = (i_15_auto + 1) + do end (tbl_14_auto)[i_15_auto] = val_16_auto + else + end + end + return tbl_14_auto + end + commands.apropos = function(_env, read, on_values, on_error, _scope) + local function _556_(_241) + return on_values(apropos(tostring(_241))) + end + return run_command(read, on_error, _556_) + end + do end (compiler.metadata):set(commands.apropos, "fnl/docstring", "Print all functions matching a pattern in all loaded modules.") + local function apropos_follow_path(path) + local paths + do + local tbl_14_auto = {} + local i_15_auto = #tbl_14_auto + for p in path:gmatch("[^%.]+") do + local val_16_auto = p + if (nil ~= val_16_auto) then + i_15_auto = (i_15_auto + 1) + do end (tbl_14_auto)[i_15_auto] = val_16_auto + else + end + end + paths = tbl_14_auto + end + local tgt = package.loaded + for _, path0 in ipairs(paths) do + if (nil == tgt) then break end + local _559_ + do + local _558_ = path0:gsub("%/", ".") + _559_ = _558_ + end + tgt = tgt[_559_] + end + return tgt + end + local function apropos_doc(pattern) + local names = {} + for _, path in ipairs(apropos(".*")) do + local tgt = apropos_follow_path(path) + if ("function" == type(tgt)) then + local _560_ = (compiler.metadata):get(tgt, "fnl/docstring") + if (nil ~= _560_) then + local docstr = _560_ + if docstr:match(pattern) then + table.insert(names, path) + else + end + else + end + else + end + end + return names + end + commands["apropos-doc"] = function(_env, read, on_values, on_error, _scope) + local function _564_(_241) + return on_values(apropos_doc(tostring(_241))) + end + return run_command(read, on_error, _564_) + end + do end (compiler.metadata):set(commands["apropos-doc"], "fnl/docstring", "Print all functions that match the pattern in their docs") + local function apropos_show_docs(on_values, pattern) + for _, path in ipairs(apropos(pattern)) do + local tgt = apropos_follow_path(path) + if (("function" == type(tgt)) and (compiler.metadata):get(tgt, "fnl/docstring")) then + on_values(specials.doc(tgt, path)) + on_values() + else + end + end + return nil + end + commands["apropos-show-docs"] = function(_env, read, on_values, on_error) + local function _566_(_241) + return apropos_show_docs(on_values, tostring(_241)) + end + return run_command(read, on_error, _566_) + end + do end (compiler.metadata):set(commands["apropos-show-docs"], "fnl/docstring", "Print all documentations matching a pattern in function name") + local function resolve(identifier, _567_, scope) + local _arg_568_ = _567_ + local ___replLocals___ = _arg_568_["___replLocals___"] + local env = _arg_568_ + local e + local function _569_(_241, _242) + return (___replLocals___[_242] or env[_242]) + end + e = setmetatable({}, {__index = _569_}) + local code = compiler["compile-string"](tostring(identifier), {scope = scope}) + return specials["load-code"](code, e)() + end + commands.find = function(env, read, on_values, on_error, scope) + local function _570_(_241) + local _571_ + do + local _572_ = utils["sym?"](_241) + if (nil ~= _572_) then + local _573_ = resolve(_572_, env, scope) + if (nil ~= _573_) then + _571_ = debug.getinfo(_573_) + else + _571_ = _573_ + end + else + _571_ = _572_ + end + end + if ((_G.type(_571_) == "table") and (nil ~= (_571_).short_src) and (nil ~= (_571_).linedefined) and ((_571_).what == "Lua") and (nil ~= (_571_).source)) then + local src = (_571_).short_src + local line = (_571_).linedefined + local source = (_571_).source + local fnlsrc + do + local t_576_ = compiler.sourcemap + if (nil ~= t_576_) then + t_576_ = (t_576_)[source] + else + end + if (nil ~= t_576_) then + t_576_ = (t_576_)[line] + else + end + if (nil ~= t_576_) then + t_576_ = (t_576_)[2] + else + end + fnlsrc = t_576_ + end + return on_values({string.format("%s:%s", src, (fnlsrc or line))}) + elseif (_571_ == nil) then + return on_error("Repl", "Unknown value") + elseif true then + local _ = _571_ + return on_error("Repl", "No source info") + else + return nil + end + end + return run_command(read, on_error, _570_) + end + do end (compiler.metadata):set(commands.find, "fnl/docstring", "Print the filename and line number for a given function") + commands.doc = function(env, read, on_values, on_error, scope) + local function _581_(_241) + local name = tostring(_241) + local target = (scope.specials[name] or scope.macros[name] or resolve(name, env, scope)) + return on_values({specials.doc(target, name)}) + end + return run_command(read, on_error, _581_) + end + do end (compiler.metadata):set(commands.doc, "fnl/docstring", "Print the docstring and arglist for a function, macro, or special form.") + local function load_plugin_commands(plugins) + for _, plugin in ipairs((plugins or {})) do + for name, f in pairs(plugin) do + local _582_ = name:match("^repl%-command%-(.*)") + if (nil ~= _582_) then + local cmd_name = _582_ + commands[cmd_name] = (commands[cmd_name] or f) + else + end + end + end + return nil + end + local function run_command_loop(input, read, loop, env, on_values, on_error, scope, chars) + local command_name = input:match(",([^%s/]+)") + do + local _584_ = commands[command_name] + if (nil ~= _584_) then + local command = _584_ + command(env, read, on_values, on_error, scope, chars) + elseif true then + local _ = _584_ + if ("exit" ~= command_name) then + on_values({"Unknown command", command_name}) + else + end + else + end + end + if ("exit" ~= command_name) then + return loop() + else + return nil + end + end + local function repl(options) + local old_root_options = utils.root.options + local env = specials["wrap-env"]((options.env or (rawget(_G, "_ENV") or _G))) + local save_locals_3f = ((options.saveLocals ~= false) and env.debug and env.debug.getlocal) + local opts = utils.copy(options) + local read_chunk = (opts.readChunk or default_read_chunk) + local on_values = (opts.onValues or default_on_values) + local on_error = (opts.onError or default_on_error) + local pp = (opts.pp or view) + local byte_stream, clear_stream = parser.granulate(read_chunk) + local chars = {} + local read, reset = nil, nil + local function _588_(parser_state) + local c = byte_stream(parser_state) + table.insert(chars, c) + return c + end + read, reset = parser.parser(_588_) + opts.env, opts.scope = env, compiler["make-scope"]() + opts.useMetadata = (options.useMetadata ~= false) + if (opts.allowedGlobals == nil) then + opts.allowedGlobals = specials["current-global-names"](env) + else + end + if opts.registerCompleter then + local function _592_() + local _590_ = env + local _591_ = opts.scope + local function _593_(...) + return completer(_590_, _591_, ...) + end + return _593_ + end + opts.registerCompleter(_592_()) + else + end + load_plugin_commands(opts.plugins) + if save_locals_3f then + local function newindex(t, k, v) + if opts.scope.unmanglings[k] then + return rawset(t, k, v) + else + return nil + end + end + env.___replLocals___ = setmetatable({}, {__newindex = newindex}) + else + end + local function print_values(...) + local vals = {...} + local out = {} + env._, env.__ = vals[1], vals + for i = 1, select("#", ...) do + table.insert(out, pp(vals[i])) + end + return on_values(out) + end + local function loop() + for k in pairs(chars) do + chars[k] = nil + end + reset() + local ok, parse_ok_3f, x = pcall(read) + local src_string = string.char(unpack(chars)) + if not ok then + on_error("Parse", parse_ok_3f) + clear_stream() + return loop() + elseif command_3f(src_string) then + return run_command_loop(src_string, read, loop, env, on_values, on_error, opts.scope, chars) + else + if parse_ok_3f then + do + local _597_, _598_ = nil, nil + local function _600_() + local _599_ = opts + _599_["source"] = src_string + return _599_ + end + _597_, _598_ = pcall(compiler.compile, x, _600_()) + if ((_597_ == false) and (nil ~= _598_)) then + local msg = _598_ + clear_stream() + on_error("Compile", msg) + elseif ((_597_ == true) and (nil ~= _598_)) then + local src = _598_ + local src0 + if save_locals_3f then + src0 = splice_save_locals(env, src, opts.scope) + else + src0 = src + end + local _602_, _603_ = pcall(specials["load-code"], src0, env) + if ((_602_ == false) and (nil ~= _603_)) then + local msg = _603_ + clear_stream() + on_error("Lua Compile", msg, src0) + elseif (true and (nil ~= _603_)) then + local _ = _602_ + local chunk = _603_ + local function _604_() + return print_values(chunk()) + end + local function _605_() + local function _606_(...) + return on_error("Runtime", ...) + end + return _606_ + end + xpcall(_604_, _605_()) + else + end + else + end + end + utils.root.options = old_root_options + return loop() + else + return nil + end + end + end + return loop() + end + return repl +end +package.preload["fennel.specials"] = package.preload["fennel.specials"] or function(...) + local utils = require("fennel.utils") + local view = require("fennel.view") + local parser = require("fennel.parser") + local compiler = require("fennel.compiler") + local unpack = (table.unpack or _G.unpack) + local SPECIALS = compiler.scopes.global.specials + local function wrap_env(env) + local function _345_(_, key) + if (type(key) == "string") then + return env[compiler["global-unmangling"](key)] + else + return env[key] + end + end + local function _347_(_, key, value) + if (type(key) == "string") then + env[compiler["global-unmangling"](key)] = value + return nil + else + env[key] = value + return nil + end + end + local function _349_() + local function putenv(k, v) + local _350_ + if (type(k) == "string") then + _350_ = compiler["global-unmangling"](k) + else + _350_ = k + end + return _350_, v + end + return next, utils.kvmap(env, putenv), nil + end + return setmetatable({}, {__index = _345_, __newindex = _347_, __pairs = _349_}) + end + local function current_global_names(_3fenv) + local mt + do + local _352_ = getmetatable(_3fenv) + if ((_G.type(_352_) == "table") and (nil ~= (_352_).__pairs)) then + local mtpairs = (_352_).__pairs + local tbl_11_auto = {} + for k, v in mtpairs(_3fenv) do + local _353_, _354_ = k, v + if ((nil ~= _353_) and (nil ~= _354_)) then + local k_12_auto = _353_ + local v_13_auto = _354_ + tbl_11_auto[k_12_auto] = v_13_auto + else + end + end + mt = tbl_11_auto + elseif (_352_ == nil) then + mt = (_3fenv or _G) + else + mt = nil + end + end + return (mt and utils.kvmap(mt, compiler["global-unmangling"])) + end + local function load_code(code, _3fenv, _3ffilename) + local env = (_3fenv or rawget(_G, "_ENV") or _G) + if (rawget(_G, "setfenv") and rawget(_G, "loadstring")) then + local f = assert(_G.loadstring(code, _3ffilename)) + local _357_ = f + setfenv(_357_, env) + return _357_ + else + return assert(load(code, _3ffilename, "t", env)) + end + end + local function doc_2a(tgt, name) + if not tgt then + return (name .. " not found") + else + local docstring = (((compiler.metadata):get(tgt, "fnl/docstring") or "#<undocumented>")):gsub("\n$", ""):gsub("\n", "\n ") + local mt = getmetatable(tgt) + if ((type(tgt) == "function") or ((type(mt) == "table") and (type(mt.__call) == "function"))) then + local arglist = table.concat(((compiler.metadata):get(tgt, "fnl/arglist") or {"#<unknown-arguments>"}), " ") + local _359_ + if (#arglist > 0) then + _359_ = " " + else + _359_ = "" + end + return string.format("(%s%s%s)\n %s", name, _359_, arglist, docstring) + else + return string.format("%s\n %s", name, docstring) + end + end + end + local function doc_special(name, arglist, docstring, body_form_3f) + compiler.metadata[SPECIALS[name]] = {["fnl/arglist"] = arglist, ["fnl/docstring"] = docstring, ["fnl/body-form?"] = body_form_3f} + return nil + end + local function compile_do(ast, scope, parent, _3fstart) + local start = (_3fstart or 2) + local len = #ast + local sub_scope = compiler["make-scope"](scope) + for i = start, len do + compiler.compile1(ast[i], sub_scope, parent, {nval = 0}) + end + return nil + end + SPECIALS["do"] = function(ast, scope, parent, opts, _3fstart, _3fchunk, _3fsub_scope, _3fpre_syms) + local start = (_3fstart or 2) + local sub_scope = (_3fsub_scope or compiler["make-scope"](scope)) + local chunk = (_3fchunk or {}) + local len = #ast + local retexprs = {returned = true} + local function compile_body(outer_target, outer_tail, outer_retexprs) + if (len < start) then + compiler.compile1(nil, sub_scope, chunk, {tail = outer_tail, target = outer_target}) + else + for i = start, len do + local subopts = {nval = (((i ~= len) and 0) or opts.nval), tail = (((i == len) and outer_tail) or nil), target = (((i == len) and outer_target) or nil)} + local _ = utils["propagate-options"](opts, subopts) + local subexprs = compiler.compile1(ast[i], sub_scope, chunk, subopts) + if (i ~= len) then + compiler["keep-side-effects"](subexprs, parent, nil, ast[i]) + else + end + end + end + compiler.emit(parent, chunk, ast) + compiler.emit(parent, "end", ast) + utils.hook("do", ast, sub_scope) + return (outer_retexprs or retexprs) + end + if (opts.target or (opts.nval == 0) or opts.tail) then + compiler.emit(parent, "do", ast) + return compile_body(opts.target, opts.tail) + elseif opts.nval then + local syms = {} + for i = 1, opts.nval do + local s = ((_3fpre_syms and (_3fpre_syms)[i]) or compiler.gensym(scope)) + do end (syms)[i] = s + retexprs[i] = utils.expr(s, "sym") + end + local outer_target = table.concat(syms, ", ") + compiler.emit(parent, string.format("local %s", outer_target), ast) + compiler.emit(parent, "do", ast) + return compile_body(outer_target, opts.tail) + else + local fname = compiler.gensym(scope) + local fargs + if scope.vararg then + fargs = "..." + else + fargs = "" + end + compiler.emit(parent, string.format("local function %s(%s)", fname, fargs), ast) + return compile_body(nil, true, utils.expr((fname .. "(" .. fargs .. ")"), "statement")) + end + end + doc_special("do", {"..."}, "Evaluate multiple forms; return last value.", true) + SPECIALS.values = function(ast, scope, parent) + local len = #ast + local exprs = {} + for i = 2, len do + local subexprs = compiler.compile1(ast[i], scope, parent, {nval = ((i ~= len) and 1)}) + table.insert(exprs, subexprs[1]) + if (i == len) then + for j = 2, #subexprs do + table.insert(exprs, subexprs[j]) + end + else + end + end + return exprs + end + doc_special("values", {"..."}, "Return multiple values from a function. Must be in tail position.") + local function deep_tostring(x, key_3f) + if utils["sequence?"](x) then + local _368_ + do + local tbl_14_auto = {} + local i_15_auto = #tbl_14_auto + for _, v in ipairs(x) do + local val_16_auto = deep_tostring(v) + if (nil ~= val_16_auto) then + i_15_auto = (i_15_auto + 1) + do end (tbl_14_auto)[i_15_auto] = val_16_auto + else + end + end + _368_ = tbl_14_auto + end + return ("[" .. table.concat(_368_, " ") .. "]") + elseif utils["table?"](x) then + local _370_ + do + local tbl_14_auto = {} + local i_15_auto = #tbl_14_auto + for k, v in pairs(x) do + local val_16_auto = (deep_tostring(k, true) .. " " .. deep_tostring(v)) + if (nil ~= val_16_auto) then + i_15_auto = (i_15_auto + 1) + do end (tbl_14_auto)[i_15_auto] = val_16_auto + else + end + end + _370_ = tbl_14_auto + end + return ("{" .. table.concat(_370_, " ") .. "}") + elseif (key_3f and (type(x) == "string") and x:find("^[-%w?\\^_!$%&*+./@:|<=>]+$")) then + return (":" .. x) + elseif (type(x) == "string") then + return string.format("%q", x):gsub("\\\"", "\\\\\""):gsub("\"", "\\\"") + else + return tostring(x) + end + end + local function set_fn_metadata(arg_list, docstring, parent, fn_name) + if utils.root.options.useMetadata then + local args + local function _373_(_241) + return ("\"%s\""):format(deep_tostring(_241)) + end + args = utils.map(arg_list, _373_) + local meta_fields = {"\"fnl/arglist\"", ("{" .. table.concat(args, ", ") .. "}")} + if docstring then + table.insert(meta_fields, "\"fnl/docstring\"") + table.insert(meta_fields, ("\"" .. docstring:gsub("%s+$", ""):gsub("\\", "\\\\"):gsub("\n", "\\n"):gsub("\"", "\\\"") .. "\"")) + else + end + local meta_str = ("require(\"%s\").metadata"):format((utils.root.options.moduleName or "fennel")) + return compiler.emit(parent, ("pcall(function() %s:setall(%s, %s) end)"):format(meta_str, fn_name, table.concat(meta_fields, ", "))) + else + return nil + end + end + local function get_fn_name(ast, scope, fn_name, multi) + if (fn_name and (fn_name[1] ~= "nil")) then + local _376_ + if not multi then + _376_ = compiler["declare-local"](fn_name, {}, scope, ast) + else + _376_ = (compiler["symbol-to-expression"](fn_name, scope))[1] + end + return _376_, not multi, 3 + else + return nil, true, 2 + end + end + local function compile_named_fn(ast, f_scope, f_chunk, parent, index, fn_name, local_3f, arg_name_list, arg_list, docstring) + for i = (index + 1), #ast do + compiler.compile1(ast[i], f_scope, f_chunk, {nval = (((i ~= #ast) and 0) or nil), tail = (i == #ast)}) + end + local _379_ + if local_3f then + _379_ = "local function %s(%s)" + else + _379_ = "%s = function(%s)" + end + compiler.emit(parent, string.format(_379_, fn_name, table.concat(arg_name_list, ", ")), ast) + compiler.emit(parent, f_chunk, ast) + compiler.emit(parent, "end", ast) + set_fn_metadata(arg_list, docstring, parent, fn_name) + utils.hook("fn", ast, f_scope) + return utils.expr(fn_name, "sym") + end + local function compile_anonymous_fn(ast, f_scope, f_chunk, parent, index, arg_name_list, arg_list, docstring, scope) + local fn_name = compiler.gensym(scope) + return compile_named_fn(ast, f_scope, f_chunk, parent, index, fn_name, true, arg_name_list, arg_list, docstring) + end + SPECIALS.fn = function(ast, scope, parent) + local f_scope + do + local _381_ = compiler["make-scope"](scope) + do end (_381_)["vararg"] = false + f_scope = _381_ + end + local f_chunk = {} + local fn_sym = utils["sym?"](ast[2]) + local multi = (fn_sym and utils["multi-sym?"](fn_sym[1])) + local fn_name, local_3f, index = get_fn_name(ast, scope, fn_sym, multi) + local arg_list = compiler.assert(utils["table?"](ast[index]), "expected parameters table", ast) + compiler.assert((not multi or not multi["multi-sym-method-call"]), ("unexpected multi symbol " .. tostring(fn_name)), fn_sym) + local function get_arg_name(arg) + if utils["varg?"](arg) then + compiler.assert((arg == arg_list[#arg_list]), "expected vararg as last parameter", ast) + f_scope.vararg = true + return "..." + elseif (utils["sym?"](arg) and (tostring(arg) ~= "nil") and not utils["multi-sym?"](tostring(arg))) then + return compiler["declare-local"](arg, {}, f_scope, ast) + elseif utils["table?"](arg) then + local raw = utils.sym(compiler.gensym(scope)) + local declared = compiler["declare-local"](raw, {}, f_scope, ast) + compiler.destructure(arg, raw, ast, f_scope, f_chunk, {declaration = true, nomulti = true, symtype = "arg"}) + return declared + else + return compiler.assert(false, ("expected symbol for function parameter: %s"):format(tostring(arg)), ast[index]) + end + end + local arg_name_list = utils.map(arg_list, get_arg_name) + local index0, docstring = nil, nil + if ((type(ast[(index + 1)]) == "string") and ((index + 1) < #ast)) then + index0, docstring = (index + 1), ast[(index + 1)] + else + index0, docstring = index, nil + end + if fn_name then + return compile_named_fn(ast, f_scope, f_chunk, parent, index0, fn_name, local_3f, arg_name_list, arg_list, docstring) + else + return compile_anonymous_fn(ast, f_scope, f_chunk, parent, index0, arg_name_list, arg_list, docstring, scope) + end + end + doc_special("fn", {"name?", "args", "docstring?", "..."}, "Function syntax. May optionally include a name and docstring.\nIf a name is provided, the function will be bound in the current scope.\nWhen called with the wrong number of args, excess args will be discarded\nand lacking args will be nil, use lambda for arity-checked functions.", true) + SPECIALS.lua = function(ast, _, parent) + compiler.assert(((#ast == 2) or (#ast == 3)), "expected 1 or 2 arguments", ast) + local _386_ + do + local _385_ = utils["sym?"](ast[2]) + if (nil ~= _385_) then + _386_ = tostring(_385_) + else + _386_ = _385_ + end + end + if ("nil" ~= _386_) then + table.insert(parent, {ast = ast, leaf = tostring(ast[2])}) + else + end + local _390_ + do + local _389_ = utils["sym?"](ast[3]) + if (nil ~= _389_) then + _390_ = tostring(_389_) + else + _390_ = _389_ + end + end + if ("nil" ~= _390_) then + return tostring(ast[3]) + else + return nil + end + end + local function dot(ast, scope, parent) + compiler.assert((1 < #ast), "expected table argument", ast) + local len = #ast + local _let_393_ = compiler.compile1(ast[2], scope, parent, {nval = 1}) + local lhs = _let_393_[1] + if (len == 2) then + return tostring(lhs) + else + local indices = {} + for i = 3, len do + local index = ast[i] + if ((type(index) == "string") and utils["valid-lua-identifier?"](index)) then + table.insert(indices, ("." .. index)) + else + local _let_394_ = compiler.compile1(index, scope, parent, {nval = 1}) + local index0 = _let_394_[1] + table.insert(indices, ("[" .. tostring(index0) .. "]")) + end + end + if (tostring(lhs):find("[{\"0-9]") or ("nil" == tostring(lhs))) then + return ("(" .. tostring(lhs) .. ")" .. table.concat(indices)) + else + return (tostring(lhs) .. table.concat(indices)) + end + end + end + SPECIALS["."] = dot + doc_special(".", {"tbl", "key1", "..."}, "Look up key1 in tbl table. If more args are provided, do a nested lookup.") + SPECIALS.global = function(ast, scope, parent) + compiler.assert((#ast == 3), "expected name and value", ast) + compiler.destructure(ast[2], ast[3], ast, scope, parent, {forceglobal = true, nomulti = true, symtype = "global"}) + return nil + end + doc_special("global", {"name", "val"}, "Set name as a global with val.") + SPECIALS.set = function(ast, scope, parent) + compiler.assert((#ast == 3), "expected name and value", ast) + compiler.destructure(ast[2], ast[3], ast, scope, parent, {noundef = true, symtype = "set"}) + return nil + end + doc_special("set", {"name", "val"}, "Set a local variable to a new value. Only works on locals using var.") + local function set_forcibly_21_2a(ast, scope, parent) + compiler.assert((#ast == 3), "expected name and value", ast) + compiler.destructure(ast[2], ast[3], ast, scope, parent, {forceset = true, symtype = "set"}) + return nil + end + SPECIALS["set-forcibly!"] = set_forcibly_21_2a + local function local_2a(ast, scope, parent) + compiler.assert((#ast == 3), "expected name and value", ast) + compiler.destructure(ast[2], ast[3], ast, scope, parent, {declaration = true, nomulti = true, symtype = "local"}) + return nil + end + SPECIALS["local"] = local_2a + doc_special("local", {"name", "val"}, "Introduce new top-level immutable local.") + SPECIALS.var = function(ast, scope, parent) + compiler.assert((#ast == 3), "expected name and value", ast) + compiler.destructure(ast[2], ast[3], ast, scope, parent, {declaration = true, isvar = true, nomulti = true, symtype = "var"}) + return nil + end + doc_special("var", {"name", "val"}, "Introduce new mutable local.") + local function kv_3f(t) + local _398_ + do + local tbl_14_auto = {} + local i_15_auto = #tbl_14_auto + for k in pairs(t) do + local val_16_auto + if not ("number" == type(k)) then + val_16_auto = k + else + val_16_auto = nil + end + if (nil ~= val_16_auto) then + i_15_auto = (i_15_auto + 1) + do end (tbl_14_auto)[i_15_auto] = val_16_auto + else + end + end + _398_ = tbl_14_auto + end + return (_398_)[1] + end + SPECIALS.let = function(ast, scope, parent, opts) + local bindings = ast[2] + local pre_syms = {} + compiler.assert((utils["table?"](bindings) and not kv_3f(bindings)), "expected binding sequence", bindings) + compiler.assert(((#bindings % 2) == 0), "expected even number of name/value bindings", ast[2]) + compiler.assert((#ast >= 3), "expected body expression", ast[1]) + for _ = 1, (opts.nval or 0) do + table.insert(pre_syms, compiler.gensym(scope)) + end + local sub_scope = compiler["make-scope"](scope) + local sub_chunk = {} + for i = 1, #bindings, 2 do + compiler.destructure(bindings[i], bindings[(i + 1)], ast, sub_scope, sub_chunk, {declaration = true, nomulti = true, symtype = "let"}) + end + return SPECIALS["do"](ast, scope, parent, opts, 3, sub_chunk, sub_scope, pre_syms) + end + doc_special("let", {"[name1 val1 ... nameN valN]", "..."}, "Introduces a new scope in which a given set of local bindings are used.", true) + local function get_prev_line(parent) + if ("table" == type(parent)) then + return get_prev_line((parent.leaf or parent[#parent])) + else + return (parent or "") + end + end + local function disambiguate_3f(rootstr, parent) + local function _403_() + local _402_ = get_prev_line(parent) + if (nil ~= _402_) then + local prev_line = _402_ + return prev_line:match("%)$") + else + return nil + end + end + return (rootstr:match("^{") or _403_()) + end + SPECIALS.tset = function(ast, scope, parent) + compiler.assert((#ast > 3), "expected table, key, and value arguments", ast) + local root = (compiler.compile1(ast[2], scope, parent, {nval = 1}))[1] + local keys = {} + for i = 3, (#ast - 1) do + local _let_405_ = compiler.compile1(ast[i], scope, parent, {nval = 1}) + local key = _let_405_[1] + table.insert(keys, tostring(key)) + end + local value = (compiler.compile1(ast[#ast], scope, parent, {nval = 1}))[1] + local rootstr = tostring(root) + local fmtstr + if disambiguate_3f(rootstr, parent) then + fmtstr = "do end (%s)[%s] = %s" + else + fmtstr = "%s[%s] = %s" + end + return compiler.emit(parent, fmtstr:format(rootstr, table.concat(keys, "]["), tostring(value)), ast) + end + doc_special("tset", {"tbl", "key1", "...", "keyN", "val"}, "Set the value of a table field. Can take additional keys to set\nnested values, but all parents must contain an existing table.") + local function calculate_target(scope, opts) + if not (opts.tail or opts.target or opts.nval) then + return "iife", true, nil + elseif (opts.nval and (opts.nval ~= 0) and not opts.target) then + local accum = {} + local target_exprs = {} + for i = 1, opts.nval do + local s = compiler.gensym(scope) + do end (accum)[i] = s + target_exprs[i] = utils.expr(s, "sym") + end + return "target", opts.tail, table.concat(accum, ", "), target_exprs + else + return "none", opts.tail, opts.target + end + end + local function if_2a(ast, scope, parent, opts) + compiler.assert((2 < #ast), "expected condition and body", ast) + local do_scope = compiler["make-scope"](scope) + local branches = {} + local wrapper, inner_tail, inner_target, target_exprs = calculate_target(scope, opts) + local body_opts = {nval = opts.nval, tail = inner_tail, target = inner_target} + local function compile_body(i) + local chunk = {} + local cscope = compiler["make-scope"](do_scope) + compiler["keep-side-effects"](compiler.compile1(ast[i], cscope, chunk, body_opts), chunk, nil, ast[i]) + return {chunk = chunk, scope = cscope} + end + if (1 == (#ast % 2)) then + table.insert(ast, utils.sym("nil")) + else + end + for i = 2, (#ast - 1), 2 do + local condchunk = {} + local res = compiler.compile1(ast[i], do_scope, condchunk, {nval = 1}) + local cond = res[1] + local branch = compile_body((i + 1)) + branch.cond = cond + branch.condchunk = condchunk + branch.nested = ((i ~= 2) and (next(condchunk, nil) == nil)) + table.insert(branches, branch) + end + local else_branch = compile_body(#ast) + local s = compiler.gensym(scope) + local buffer = {} + local last_buffer = buffer + for i = 1, #branches do + local branch = branches[i] + local fstr + if not branch.nested then + fstr = "if %s then" + else + fstr = "elseif %s then" + end + local cond = tostring(branch.cond) + local cond_line = fstr:format(cond) + if branch.nested then + compiler.emit(last_buffer, branch.condchunk, ast) + else + for _, v in ipairs(branch.condchunk) do + compiler.emit(last_buffer, v, ast) + end + end + compiler.emit(last_buffer, cond_line, ast) + compiler.emit(last_buffer, branch.chunk, ast) + if (i == #branches) then + compiler.emit(last_buffer, "else", ast) + compiler.emit(last_buffer, else_branch.chunk, ast) + compiler.emit(last_buffer, "end", ast) + elseif not (branches[(i + 1)]).nested then + local next_buffer = {} + compiler.emit(last_buffer, "else", ast) + compiler.emit(last_buffer, next_buffer, ast) + compiler.emit(last_buffer, "end", ast) + last_buffer = next_buffer + else + end + end + if (wrapper == "iife") then + local iifeargs = ((scope.vararg and "...") or "") + compiler.emit(parent, ("local function %s(%s)"):format(tostring(s), iifeargs), ast) + compiler.emit(parent, buffer, ast) + compiler.emit(parent, "end", ast) + return utils.expr(("%s(%s)"):format(tostring(s), iifeargs), "statement") + elseif (wrapper == "none") then + for i = 1, #buffer do + compiler.emit(parent, buffer[i], ast) + end + return {returned = true} + else + compiler.emit(parent, ("local %s"):format(inner_target), ast) + for i = 1, #buffer do + compiler.emit(parent, buffer[i], ast) + end + return target_exprs + end + end + SPECIALS["if"] = if_2a + doc_special("if", {"cond1", "body1", "...", "condN", "bodyN"}, "Conditional form.\nTakes any number of condition/body pairs and evaluates the first body where\nthe condition evaluates to truthy. Similar to cond in other lisps.") + local function remove_until_condition(bindings) + if ("until" == bindings[(#bindings - 1)]) then + table.remove(bindings, (#bindings - 1)) + return table.remove(bindings) + else + return nil + end + end + local function compile_until(condition, scope, chunk) + if condition then + local _let_414_ = compiler.compile1(condition, scope, chunk, {nval = 1}) + local condition_lua = _let_414_[1] + return compiler.emit(chunk, ("if %s then break end"):format(tostring(condition_lua)), utils.expr(condition, "expression")) + else + return nil + end + end + SPECIALS.each = function(ast, scope, parent) + compiler.assert((#ast >= 3), "expected body expression", ast[1]) + local binding = compiler.assert(utils["table?"](ast[2]), "expected binding table", ast) + local _ = compiler.assert((2 <= #binding), "expected binding and iterator", binding) + local until_condition = remove_until_condition(binding) + local iter = table.remove(binding, #binding) + local destructures = {} + local new_manglings = {} + local sub_scope = compiler["make-scope"](scope) + local function destructure_binding(v) + compiler.assert(("string" ~= type(v)), ("unexpected iterator clause " .. tostring(v)), binding) + if utils["sym?"](v) then + return compiler["declare-local"](v, {}, sub_scope, ast, new_manglings) + else + local raw = utils.sym(compiler.gensym(sub_scope)) + do end (destructures)[raw] = v + return compiler["declare-local"](raw, {}, sub_scope, ast) + end + end + local bind_vars = utils.map(binding, destructure_binding) + local vals = compiler.compile1(iter, scope, parent) + local val_names = utils.map(vals, tostring) + local chunk = {} + compiler.emit(parent, ("for %s in %s do"):format(table.concat(bind_vars, ", "), table.concat(val_names, ", ")), ast) + for raw, args in utils.stablepairs(destructures) do + compiler.destructure(args, raw, ast, sub_scope, chunk, {declaration = true, nomulti = true, symtype = "each"}) + end + compiler["apply-manglings"](sub_scope, new_manglings, ast) + compile_until(until_condition, sub_scope, chunk) + compile_do(ast, sub_scope, chunk, 3) + compiler.emit(parent, chunk, ast) + return compiler.emit(parent, "end", ast) + end + doc_special("each", {"[key value (iterator)]", "..."}, "Runs the body once for each set of values provided by the given iterator.\nMost commonly used with ipairs for sequential tables or pairs for undefined\norder, but can be used with any iterator.", true) + local function while_2a(ast, scope, parent) + local len1 = #parent + local condition = (compiler.compile1(ast[2], scope, parent, {nval = 1}))[1] + local len2 = #parent + local sub_chunk = {} + if (len1 ~= len2) then + for i = (len1 + 1), len2 do + table.insert(sub_chunk, parent[i]) + do end (parent)[i] = nil + end + compiler.emit(parent, "while true do", ast) + compiler.emit(sub_chunk, ("if not %s then break end"):format(condition[1]), ast) + else + compiler.emit(parent, ("while " .. tostring(condition) .. " do"), ast) + end + compile_do(ast, compiler["make-scope"](scope), sub_chunk, 3) + compiler.emit(parent, sub_chunk, ast) + return compiler.emit(parent, "end", ast) + end + SPECIALS["while"] = while_2a + doc_special("while", {"condition", "..."}, "The classic while loop. Evaluates body until a condition is non-truthy.", true) + local function for_2a(ast, scope, parent) + local ranges = compiler.assert(utils["table?"](ast[2]), "expected binding table", ast) + local until_condition = remove_until_condition(ast[2]) + local binding_sym = table.remove(ast[2], 1) + local sub_scope = compiler["make-scope"](scope) + local range_args = {} + local chunk = {} + compiler.assert(utils["sym?"](binding_sym), ("unable to bind %s %s"):format(type(binding_sym), tostring(binding_sym)), ast[2]) + compiler.assert((#ast >= 3), "expected body expression", ast[1]) + compiler.assert((#ranges <= 3), "unexpected arguments", ranges[4]) + for i = 1, math.min(#ranges, 3) do + range_args[i] = tostring((compiler.compile1(ranges[i], scope, parent, {nval = 1}))[1]) + end + compiler.emit(parent, ("for %s = %s do"):format(compiler["declare-local"](binding_sym, {}, sub_scope, ast), table.concat(range_args, ", ")), ast) + compile_until(until_condition, sub_scope, chunk) + compile_do(ast, sub_scope, chunk, 3) + compiler.emit(parent, chunk, ast) + return compiler.emit(parent, "end", ast) + end + SPECIALS["for"] = for_2a + doc_special("for", {"[index start stop step?]", "..."}, "Numeric loop construct.\nEvaluates body once for each value between start and stop (inclusive).", true) + local function native_method_call(ast, _scope, _parent, target, args) + local _let_418_ = ast + local _ = _let_418_[1] + local _0 = _let_418_[2] + local method_string = _let_418_[3] + local call_string + if ((target.type == "literal") or (target.type == "varg") or (target.type == "expression")) then + call_string = "(%s):%s(%s)" + else + call_string = "%s:%s(%s)" + end + return utils.expr(string.format(call_string, tostring(target), method_string, table.concat(args, ", ")), "statement") + end + local function nonnative_method_call(ast, scope, parent, target, args) + local method_string = tostring((compiler.compile1(ast[3], scope, parent, {nval = 1}))[1]) + local args0 = {tostring(target), unpack(args)} + return utils.expr(string.format("%s[%s](%s)", tostring(target), method_string, table.concat(args0, ", ")), "statement") + end + local function double_eval_protected_method_call(ast, scope, parent, target, args) + local method_string = tostring((compiler.compile1(ast[3], scope, parent, {nval = 1}))[1]) + local call = "(function(tgt, m, ...) return tgt[m](tgt, ...) end)(%s, %s)" + table.insert(args, 1, method_string) + return utils.expr(string.format(call, tostring(target), table.concat(args, ", ")), "statement") + end + local function method_call(ast, scope, parent) + compiler.assert((2 < #ast), "expected at least 2 arguments", ast) + local _let_420_ = compiler.compile1(ast[2], scope, parent, {nval = 1}) + local target = _let_420_[1] + local args = {} + for i = 4, #ast do + local subexprs + local _421_ + if (i ~= #ast) then + _421_ = 1 + else + _421_ = nil + end + subexprs = compiler.compile1(ast[i], scope, parent, {nval = _421_}) + utils.map(subexprs, tostring, args) + end + if ((type(ast[3]) == "string") and utils["valid-lua-identifier?"](ast[3])) then + return native_method_call(ast, scope, parent, target, args) + elseif (target.type == "sym") then + return nonnative_method_call(ast, scope, parent, target, args) + else + return double_eval_protected_method_call(ast, scope, parent, target, args) + end + end + SPECIALS[":"] = method_call + doc_special(":", {"tbl", "method-name", "..."}, "Call the named method on tbl with the provided args.\nMethod name doesn't have to be known at compile-time; if it is, use\n(tbl:method-name ...) instead.") + SPECIALS.comment = function(ast, _, parent) + local els = {} + for i = 2, #ast do + table.insert(els, view(ast[i], {["one-line?"] = true})) + end + return compiler.emit(parent, ("--[[ " .. table.concat(els, " ") .. " ]]--"), ast) + end + doc_special("comment", {"..."}, "Comment which will be emitted in Lua output.", true) + local function hashfn_max_used(f_scope, i, max) + local max0 + if f_scope.symmeta[("$" .. i)].used then + max0 = i + else + max0 = max + end + if (i < 9) then + return hashfn_max_used(f_scope, (i + 1), max0) + else + return max0 + end + end + SPECIALS.hashfn = function(ast, scope, parent) + compiler.assert((#ast == 2), "expected one argument", ast) + local f_scope + do + local _426_ = compiler["make-scope"](scope) + do end (_426_)["vararg"] = false + _426_["hashfn"] = true + f_scope = _426_ + end + local f_chunk = {} + local name = compiler.gensym(scope) + local symbol = utils.sym(name) + local args = {} + compiler["declare-local"](symbol, {}, scope, ast) + for i = 1, 9 do + args[i] = compiler["declare-local"](utils.sym(("$" .. i)), {}, f_scope, ast) + end + local function walker(idx, node, parent_node) + if (utils["sym?"](node) and (tostring(node) == "$...")) then + parent_node[idx] = utils.varg() + f_scope.vararg = true + return nil + else + return (utils["list?"](node) or utils["table?"](node)) + end + end + utils["walk-tree"](ast[2], walker) + compiler.compile1(ast[2], f_scope, f_chunk, {tail = true}) + local max_used = hashfn_max_used(f_scope, 1, 0) + if f_scope.vararg then + compiler.assert((max_used == 0), "$ and $... in hashfn are mutually exclusive", ast) + else + end + local arg_str + if f_scope.vararg then + arg_str = tostring(utils.varg()) + else + arg_str = table.concat(args, ", ", 1, max_used) + end + compiler.emit(parent, string.format("local function %s(%s)", name, arg_str), ast) + compiler.emit(parent, f_chunk, ast) + compiler.emit(parent, "end", ast) + return utils.expr(name, "sym") + end + doc_special("hashfn", {"..."}, "Function literal shorthand; args are either $... OR $1, $2, etc.") + local function arithmetic_special(name, zero_arity, unary_prefix, ast, scope, parent) + local len = #ast + local operands = {} + local padded_op = (" " .. name .. " ") + for i = 2, len do + local subexprs = compiler.compile1(ast[i], scope, parent) + if (i == len) then + utils.map(subexprs, tostring, operands) + else + table.insert(operands, tostring(subexprs[1])) + end + end + local _431_ = #operands + if (_431_ == 0) then + local _433_ + do + local _432_ = zero_arity + compiler.assert(_432_, "Expected more than 0 arguments", ast) + _433_ = _432_ + end + return utils.expr(_433_, "literal") + elseif (_431_ == 1) then + if unary_prefix then + return ("(" .. unary_prefix .. padded_op .. operands[1] .. ")") + else + return operands[1] + end + elseif true then + local _ = _431_ + return ("(" .. table.concat(operands, padded_op) .. ")") + else + return nil + end + end + local function define_arithmetic_special(name, zero_arity, unary_prefix, _3flua_name) + local _439_ + do + local _436_ = (_3flua_name or name) + local _437_ = zero_arity + local _438_ = unary_prefix + local function _440_(...) + return arithmetic_special(_436_, _437_, _438_, ...) + end + _439_ = _440_ + end + SPECIALS[name] = _439_ + return doc_special(name, {"a", "b", "..."}, "Arithmetic operator; works the same as Lua but accepts more arguments.") + end + define_arithmetic_special("+", "0") + define_arithmetic_special("..", "''") + define_arithmetic_special("^") + define_arithmetic_special("-", nil, "") + define_arithmetic_special("*", "1") + define_arithmetic_special("%") + define_arithmetic_special("/", nil, "1") + define_arithmetic_special("//", nil, "1") + SPECIALS["or"] = function(ast, scope, parent) + return arithmetic_special("or", "false", nil, ast, scope, parent) + end + SPECIALS["and"] = function(ast, scope, parent) + return arithmetic_special("and", "true", nil, ast, scope, parent) + end + doc_special("and", {"a", "b", "..."}, "Boolean operator; works the same as Lua but accepts more arguments.") + doc_special("or", {"a", "b", "..."}, "Boolean operator; works the same as Lua but accepts more arguments.") + local function bitop_special(native_name, lib_name, zero_arity, unary_prefix, ast, scope, parent) + if (#ast == 1) then + return compiler.assert(zero_arity, "Expected more than 0 arguments.", ast) + else + local len = #ast + local operands = {} + local padded_native_name = (" " .. native_name .. " ") + local prefixed_lib_name = ("bit." .. lib_name) + for i = 2, len do + local subexprs + local _441_ + if (i ~= len) then + _441_ = 1 + else + _441_ = nil + end + subexprs = compiler.compile1(ast[i], scope, parent, {nval = _441_}) + utils.map(subexprs, tostring, operands) + end + if (#operands == 1) then + if utils.root.options.useBitLib then + return (prefixed_lib_name .. "(" .. unary_prefix .. ", " .. operands[1] .. ")") + else + return ("(" .. unary_prefix .. padded_native_name .. operands[1] .. ")") + end + else + if utils.root.options.useBitLib then + return (prefixed_lib_name .. "(" .. table.concat(operands, ", ") .. ")") + else + return ("(" .. table.concat(operands, padded_native_name) .. ")") + end + end + end + end + local function define_bitop_special(name, zero_arity, unary_prefix, native) + local _451_ + do + local _447_ = native + local _448_ = name + local _449_ = zero_arity + local _450_ = unary_prefix + local function _452_(...) + return bitop_special(_447_, _448_, _449_, _450_, ...) + end + _451_ = _452_ + end + SPECIALS[name] = _451_ + return nil + end + define_bitop_special("lshift", nil, "1", "<<") + define_bitop_special("rshift", nil, "1", ">>") + define_bitop_special("band", "0", "0", "&") + define_bitop_special("bor", "0", "0", "|") + define_bitop_special("bxor", "0", "0", "~") + doc_special("lshift", {"x", "n"}, "Bitwise logical left shift of x by n bits.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.") + doc_special("rshift", {"x", "n"}, "Bitwise logical right shift of x by n bits.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.") + doc_special("band", {"x1", "x2", "..."}, "Bitwise AND of any number of arguments.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.") + doc_special("bor", {"x1", "x2", "..."}, "Bitwise OR of any number of arguments.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.") + doc_special("bxor", {"x1", "x2", "..."}, "Bitwise XOR of any number of arguments.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.") + doc_special("..", {"a", "b", "..."}, "String concatenation operator; works the same as Lua but accepts more arguments.") + local function native_comparator(op, _453_, scope, parent) + local _arg_454_ = _453_ + local _ = _arg_454_[1] + local lhs_ast = _arg_454_[2] + local rhs_ast = _arg_454_[3] + local _let_455_ = compiler.compile1(lhs_ast, scope, parent, {nval = 1}) + local lhs = _let_455_[1] + local _let_456_ = compiler.compile1(rhs_ast, scope, parent, {nval = 1}) + local rhs = _let_456_[1] + return string.format("(%s %s %s)", tostring(lhs), op, tostring(rhs)) + end + local function double_eval_protected_comparator(op, chain_op, ast, scope, parent) + local arglist = {} + local comparisons = {} + local vals = {} + local chain = string.format(" %s ", (chain_op or "and")) + for i = 2, #ast do + table.insert(arglist, tostring(compiler.gensym(scope))) + table.insert(vals, tostring((compiler.compile1(ast[i], scope, parent, {nval = 1}))[1])) + end + for i = 1, (#arglist - 1) do + table.insert(comparisons, string.format("(%s %s %s)", arglist[i], op, arglist[(i + 1)])) + end + return string.format("(function(%s) return %s end)(%s)", table.concat(arglist, ","), table.concat(comparisons, chain), table.concat(vals, ",")) + end + local function define_comparator_special(name, _3flua_op, _3fchain_op) + do + local op = (_3flua_op or name) + local function opfn(ast, scope, parent) + compiler.assert((2 < #ast), "expected at least two arguments", ast) + if (3 == #ast) then + return native_comparator(op, ast, scope, parent) + else + return double_eval_protected_comparator(op, _3fchain_op, ast, scope, parent) + end + end + SPECIALS[name] = opfn + end + return doc_special(name, {"a", "b", "..."}, "Comparison operator; works the same as Lua but accepts more arguments.") + end + define_comparator_special(">") + define_comparator_special("<") + define_comparator_special(">=") + define_comparator_special("<=") + define_comparator_special("=", "==") + define_comparator_special("not=", "~=", "or") + local function define_unary_special(op, _3frealop) + local function opfn(ast, scope, parent) + compiler.assert((#ast == 2), "expected one argument", ast) + local tail = compiler.compile1(ast[2], scope, parent, {nval = 1}) + return ((_3frealop or op) .. tostring(tail[1])) + end + SPECIALS[op] = opfn + return nil + end + define_unary_special("not", "not ") + doc_special("not", {"x"}, "Logical operator; works the same as Lua.") + define_unary_special("bnot", "~") + doc_special("bnot", {"x"}, "Bitwise negation; only works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.") + define_unary_special("length", "#") + doc_special("length", {"x"}, "Returns the length of a table or string.") + do end (SPECIALS)["~="] = SPECIALS["not="] + SPECIALS["#"] = SPECIALS.length + SPECIALS.quote = function(ast, scope, parent) + compiler.assert((#ast == 2), "expected one argument", ast) + local runtime, this_scope = true, scope + while this_scope do + this_scope = this_scope.parent + if (this_scope == compiler.scopes.compiler) then + runtime = false + else + end + end + return compiler["do-quote"](ast[2], scope, parent, runtime) + end + doc_special("quote", {"x"}, "Quasiquote the following form. Only works in macro/compiler scope.") + local macro_loaded = {} + local function safe_getmetatable(tbl) + local mt = getmetatable(tbl) + assert((mt ~= getmetatable("")), "Illegal metatable access!") + return mt + end + local safe_require = nil + local function safe_compiler_env() + return {table = utils.copy(table), math = utils.copy(math), string = utils.copy(string), pairs = pairs, ipairs = ipairs, select = select, tostring = tostring, tonumber = tonumber, bit = rawget(_G, "bit"), pcall = pcall, xpcall = xpcall, next = next, print = print, type = type, assert = assert, error = error, setmetatable = setmetatable, getmetatable = safe_getmetatable, require = safe_require, rawlen = rawget(_G, "rawlen"), rawget = rawget, rawset = rawset, rawequal = rawequal, _VERSION = _VERSION} + end + local function combined_mt_pairs(env) + local combined = {} + local _let_459_ = getmetatable(env) + local __index = _let_459_["__index"] + if ("table" == type(__index)) then + for k, v in pairs(__index) do + combined[k] = v + end + else + end + for k, v in next, env, nil do + combined[k] = v + end + return next, combined, nil + end + local function make_compiler_env(ast, scope, parent, _3fopts) + local provided + do + local _461_ = (_3fopts or utils.root.options) + if ((_G.type(_461_) == "table") and ((_461_)["compiler-env"] == "strict")) then + provided = safe_compiler_env() + elseif ((_G.type(_461_) == "table") and (nil ~= (_461_).compilerEnv)) then + local compilerEnv = (_461_).compilerEnv + provided = compilerEnv + elseif ((_G.type(_461_) == "table") and (nil ~= (_461_)["compiler-env"])) then + local compiler_env = (_461_)["compiler-env"] + provided = compiler_env + elseif true then + local _ = _461_ + provided = safe_compiler_env(false) + else + provided = nil + end + end + local env + local function _463_(base) + return utils.sym(compiler.gensym((compiler.scopes.macro or scope), base)) + end + local function _464_() + return compiler.scopes.macro + end + local function _465_(symbol) + compiler.assert(compiler.scopes.macro, "must call from macro", ast) + return compiler.scopes.macro.manglings[tostring(symbol)] + end + local function _466_(form) + compiler.assert(compiler.scopes.macro, "must call from macro", ast) + return compiler.macroexpand(form, compiler.scopes.macro) + end + env = {_AST = ast, _CHUNK = parent, _IS_COMPILER = true, _SCOPE = scope, _SPECIALS = compiler.scopes.global.specials, _VARARG = utils.varg(), ["macro-loaded"] = macro_loaded, unpack = unpack, ["assert-compile"] = compiler.assert, view = view, version = utils.version, metadata = compiler.metadata, list = utils.list, ["list?"] = utils["list?"], ["table?"] = utils["table?"], sequence = utils.sequence, ["sequence?"] = utils["sequence?"], sym = utils.sym, ["sym?"] = utils["sym?"], ["multi-sym?"] = utils["multi-sym?"], comment = utils.comment, ["comment?"] = utils["comment?"], ["varg?"] = utils["varg?"], gensym = _463_, ["get-scope"] = _464_, ["in-scope?"] = _465_, macroexpand = _466_} + env._G = env + return setmetatable(env, {__index = provided, __newindex = provided, __pairs = combined_mt_pairs}) + end + local function _468_(...) + local tbl_14_auto = {} + local i_15_auto = #tbl_14_auto + for c in string.gmatch((package.config or ""), "([^\n]+)") do + local val_16_auto = c + if (nil ~= val_16_auto) then + i_15_auto = (i_15_auto + 1) + do end (tbl_14_auto)[i_15_auto] = val_16_auto + else + end + end + return tbl_14_auto + end + local _local_467_ = _468_(...) + local dirsep = _local_467_[1] + local pathsep = _local_467_[2] + local pathmark = _local_467_[3] + local pkg_config = {dirsep = (dirsep or "/"), pathmark = (pathmark or ";"), pathsep = (pathsep or "?")} + local function escapepat(str) + return string.gsub(str, "[^%w]", "%%%1") + end + local function search_module(modulename, _3fpathstring) + local pathsepesc = escapepat(pkg_config.pathsep) + local pattern = ("([^%s]*)%s"):format(pathsepesc, pathsepesc) + local no_dot_module = modulename:gsub("%.", pkg_config.dirsep) + local fullpath = ((_3fpathstring or utils["fennel-module"].path) .. pkg_config.pathsep) + local function try_path(path) + local filename = path:gsub(escapepat(pkg_config.pathmark), no_dot_module) + local filename2 = path:gsub(escapepat(pkg_config.pathmark), modulename) + local _470_ = (io.open(filename) or io.open(filename2)) + if (nil ~= _470_) then + local file = _470_ + file:close() + return filename + else + return nil + end + end + local function find_in_path(start) + local _472_ = fullpath:match(pattern, start) + if (nil ~= _472_) then + local path = _472_ + return (try_path(path) or find_in_path((start + #path + 1))) + else + return nil + end + end + return find_in_path(1) + end + local function make_searcher(_3foptions) + local function _474_(module_name) + local opts = utils.copy(utils.root.options) + for k, v in pairs((_3foptions or {})) do + opts[k] = v + end + opts["module-name"] = module_name + local _475_ = search_module(module_name) + if (nil ~= _475_) then + local filename = _475_ + local _478_ + do + local _476_ = filename + local _477_ = opts + local function _479_(...) + return utils["fennel-module"].dofile(_476_, _477_, ...) + end + _478_ = _479_ + end + return _478_, filename + else + return nil + end + end + return _474_ + end + local function fennel_macro_searcher(module_name) + local opts + do + local _481_ = utils.copy(utils.root.options) + do end (_481_)["env"] = "_COMPILER" + _481_["requireAsInclude"] = false + _481_["allowedGlobals"] = nil + opts = _481_ + end + local _482_ = search_module(module_name, utils["fennel-module"]["macro-path"]) + if (nil ~= _482_) then + local filename = _482_ + local _485_ + do + local _483_ = filename + local _484_ = opts + local function _486_(...) + return utils["fennel-module"].dofile(_483_, _484_, ...) + end + _485_ = _486_ + end + return _485_, filename + else + return nil + end + end + local function lua_macro_searcher(module_name) + local _488_ = search_module(module_name, package.path) + if (nil ~= _488_) then + local filename = _488_ + local code + do + local f = io.open(filename) + local function close_handlers_8_auto(ok_9_auto, ...) + f:close() + if ok_9_auto then + return ... + else + return error(..., 0) + end + end + local function _490_() + return assert(f:read("*a")) + end + code = close_handlers_8_auto(_G.xpcall(_490_, (package.loaded.fennel or debug).traceback)) + end + local chunk = load_code(code, make_compiler_env(), filename) + return chunk, filename + else + return nil + end + end + local macro_searchers = {fennel_macro_searcher, lua_macro_searcher} + local function search_macro_module(modname, n) + local _492_ = macro_searchers[n] + if (nil ~= _492_) then + local f = _492_ + local _493_, _494_ = f(modname) + if ((nil ~= _493_) and true) then + local loader = _493_ + local _3ffilename = _494_ + return loader, _3ffilename + elseif true then + local _ = _493_ + return search_macro_module(modname, (n + 1)) + else + return nil + end + else + return nil + end + end + local function metadata_only_fennel(modname) + if ((modname == "fennel.macros") or (package and package.loaded and ("table" == type(package.loaded[modname])) and (package.loaded[modname].metadata == compiler.metadata))) then + return {metadata = compiler.metadata} + else + return nil + end + end + local function _498_(modname) + local function _499_() + local loader, filename = search_macro_module(modname, 1) + compiler.assert(loader, (modname .. " module not found.")) + do end (macro_loaded)[modname] = loader(modname, filename) + return macro_loaded[modname] + end + return (macro_loaded[modname] or metadata_only_fennel(modname) or _499_()) + end + safe_require = _498_ + local function add_macros(macros_2a, ast, scope) + compiler.assert(utils["table?"](macros_2a), "expected macros to be table", ast) + for k, v in pairs(macros_2a) do + compiler.assert((type(v) == "function"), "expected each macro to be function", ast) + do end (scope.macros)[k] = v + end + return nil + end + local function resolve_module_name(_500_, _scope, _parent, opts) + local _arg_501_ = _500_ + local filename = _arg_501_["filename"] + local second = _arg_501_[2] + local filename0 = (filename or (utils["table?"](second) and second.filename)) + local module_name = utils.root.options["module-name"] + local modexpr = compiler.compile(second, opts) + local modname_chunk = load_code(modexpr) + return modname_chunk(module_name, filename0) + end + SPECIALS["require-macros"] = function(ast, scope, parent, _3freal_ast) + compiler.assert((#ast == 2), "Expected one module name argument", (_3freal_ast or ast)) + local modname = resolve_module_name(ast, scope, parent, {}) + compiler.assert(("string" == type(modname)), "module name must compile to string", (_3freal_ast or ast)) + if not macro_loaded[modname] then + local loader, filename = search_macro_module(modname, 1) + compiler.assert(loader, (modname .. " module not found."), ast) + do end (macro_loaded)[modname] = loader(modname, filename) + else + end + if ("import-macros" == tostring(ast[1])) then + return macro_loaded[modname] + else + return add_macros(macro_loaded[modname], ast, scope, parent) + end + end + doc_special("require-macros", {"macro-module-name"}, "Load given module and use its contents as macro definitions in current scope.\nMacro module should return a table of macro functions with string keys.\nConsider using import-macros instead as it is more flexible.") + local function emit_included_fennel(src, path, opts, sub_chunk) + local subscope = compiler["make-scope"](utils.root.scope.parent) + local forms = {} + if utils.root.options.requireAsInclude then + subscope.specials.require = compiler["require-include"] + else + end + for _, val in parser.parser(parser["string-stream"](src), path) do + table.insert(forms, val) + end + for i = 1, #forms do + local subopts + if (i == #forms) then + subopts = {tail = true} + else + subopts = {nval = 0} + end + utils["propagate-options"](opts, subopts) + compiler.compile1(forms[i], subscope, sub_chunk, subopts) + end + return nil + end + local function include_path(ast, opts, path, mod, fennel_3f) + utils.root.scope.includes[mod] = "fnl/loading" + local src + do + local f = assert(io.open(path)) + local function close_handlers_8_auto(ok_9_auto, ...) + f:close() + if ok_9_auto then + return ... + else + return error(..., 0) + end + end + local function _507_() + return f:read("*all"):gsub("[\13\n]*$", "") + end + src = close_handlers_8_auto(_G.xpcall(_507_, (package.loaded.fennel or debug).traceback)) + end + local ret = utils.expr(("require(\"" .. mod .. "\")"), "statement") + local target = ("package.preload[%q]"):format(mod) + local preload_str = (target .. " = " .. target .. " or function(...)") + local temp_chunk, sub_chunk = {}, {} + compiler.emit(temp_chunk, preload_str, ast) + compiler.emit(temp_chunk, sub_chunk) + compiler.emit(temp_chunk, "end", ast) + for i, v in ipairs(temp_chunk) do + table.insert(utils.root.chunk, i, v) + end + if fennel_3f then + emit_included_fennel(src, path, opts, sub_chunk) + else + compiler.emit(sub_chunk, src, ast) + end + utils.root.scope.includes[mod] = ret + return ret + end + local function include_circular_fallback(mod, modexpr, fallback, ast) + if (utils.root.scope.includes[mod] == "fnl/loading") then + compiler.assert(fallback, "circular include detected", ast) + return fallback(modexpr) + else + return nil + end + end + SPECIALS.include = function(ast, scope, parent, opts) + compiler.assert((#ast == 2), "expected one argument", ast) + local modexpr + do + local _510_, _511_ = pcall(resolve_module_name, ast, scope, parent, opts) + if ((_510_ == true) and (nil ~= _511_)) then + local modname = _511_ + modexpr = utils.expr(string.format("%q", modname), "literal") + elseif true then + local _ = _510_ + modexpr = (compiler.compile1(ast[2], scope, parent, {nval = 1}))[1] + else + modexpr = nil + end + end + if ((modexpr.type ~= "literal") or ((modexpr[1]):byte() ~= 34)) then + if opts.fallback then + return opts.fallback(modexpr) + else + return compiler.assert(false, "module name must be string literal", ast) + end + else + local mod = load_code(("return " .. modexpr[1]))() + local oldmod = utils.root.options["module-name"] + local _ + utils.root.options["module-name"] = mod + _ = nil + local res + local function _515_() + local _514_ = search_module(mod) + if (nil ~= _514_) then + local fennel_path = _514_ + return include_path(ast, opts, fennel_path, mod, true) + elseif true then + local _0 = _514_ + local lua_path = search_module(mod, package.path) + if lua_path then + return include_path(ast, opts, lua_path, mod, false) + elseif opts.fallback then + return opts.fallback(modexpr) + else + return compiler.assert(false, ("module not found " .. mod), ast) + end + else + return nil + end + end + res = ((utils["member?"](mod, (utils.root.options.skipInclude or {})) and utils.expr("nil --[[SKIPPED INCLUDE]]--", "literal")) or include_circular_fallback(mod, modexpr, opts.fallback, ast) or utils.root.scope.includes[mod] or _515_()) + utils.root.options["module-name"] = oldmod + return res + end + end + doc_special("include", {"module-name-literal"}, "Like require but load the target module during compilation and embed it in the\nLua output. The module must be a string literal and resolvable at compile time.") + local function eval_compiler_2a(ast, scope, parent) + local env = make_compiler_env(ast, scope, parent) + local opts = utils.copy(utils.root.options) + opts.scope = compiler["make-scope"](compiler.scopes.compiler) + opts.allowedGlobals = current_global_names(env) + return load_code(compiler.compile(ast, opts), wrap_env(env))(opts["module-name"], ast.filename) + end + SPECIALS.macros = function(ast, scope, parent) + compiler.assert((#ast == 2), "Expected one table argument", ast) + return add_macros(eval_compiler_2a(ast[2], scope, parent), ast, scope, parent) + end + doc_special("macros", {"{:macro-name-1 (fn [...] ...) ... :macro-name-N macro-body-N}"}, "Define all functions in the given table as macros local to the current scope.") + SPECIALS["eval-compiler"] = function(ast, scope, parent) + local old_first = ast[1] + ast[1] = utils.sym("do") + local val = eval_compiler_2a(ast, scope, parent) + do end (ast)[1] = old_first + return val + end + doc_special("eval-compiler", {"..."}, "Evaluate the body at compile-time. Use the macro system instead if possible.", true) + return {doc = doc_2a, ["current-global-names"] = current_global_names, ["load-code"] = load_code, ["macro-loaded"] = macro_loaded, ["macro-searchers"] = macro_searchers, ["make-compiler-env"] = make_compiler_env, ["search-module"] = search_module, ["make-searcher"] = make_searcher, ["wrap-env"] = wrap_env} +end +package.preload["fennel.compiler"] = package.preload["fennel.compiler"] or function(...) + local utils = require("fennel.utils") + local parser = require("fennel.parser") + local friend = require("fennel.friend") + local unpack = (table.unpack or _G.unpack) + local scopes = {} + local function make_scope(_3fparent) + local parent = (_3fparent or scopes.global) + local _203_ + if parent then + _203_ = ((parent.depth or 0) + 1) + else + _203_ = 0 + end + return {includes = setmetatable({}, {__index = (parent and parent.includes)}), macros = setmetatable({}, {__index = (parent and parent.macros)}), manglings = setmetatable({}, {__index = (parent and parent.manglings)}), specials = setmetatable({}, {__index = (parent and parent.specials)}), symmeta = setmetatable({}, {__index = (parent and parent.symmeta)}), unmanglings = setmetatable({}, {__index = (parent and parent.unmanglings)}), gensyms = setmetatable({}, {__index = (parent and parent.gensyms)}), autogensyms = setmetatable({}, {__index = (parent and parent.autogensyms)}), vararg = (parent and parent.vararg), depth = _203_, hashfn = (parent and parent.hashfn), refedglobals = {}, parent = parent} + end + local function assert_msg(ast, msg) + local ast_tbl + if ("table" == type(ast)) then + ast_tbl = ast + else + ast_tbl = {} + end + local m = getmetatable(ast) + local filename = ((m and m.filename) or ast_tbl.filename or "unknown") + local line = ((m and m.line) or ast_tbl.line or "?") + local target = tostring((utils["sym?"](ast_tbl[1]) or ast_tbl[1] or "()")) + return string.format("%s:%s: Compile error in '%s': %s", filename, line, target, msg) + end + local function assert_compile(condition, msg, ast) + if not condition then + local _let_206_ = (utils.root.options or {}) + local source = _let_206_["source"] + local unfriendly = _let_206_["unfriendly"] + if (nil == utils.hook("assert-compile", condition, msg, ast, utils.root.reset)) then + utils.root.reset() + if (unfriendly or not friend or not _G.io or not _G.io.read) then + error(assert_msg(ast, msg), 0) + else + friend["assert-compile"](condition, msg, ast, source) + end + else + end + else + end + return condition + end + scopes.global = make_scope() + scopes.global.vararg = true + scopes.compiler = make_scope(scopes.global) + scopes.macro = scopes.global + local serialize_subst = {["\7"] = "\\a", ["\8"] = "\\b", ["\9"] = "\\t", ["\n"] = "n", ["\11"] = "\\v", ["\12"] = "\\f"} + local function serialize_string(str) + local function _210_(_241) + return ("\\" .. _241:byte()) + end + return string.gsub(string.gsub(string.format("%q", str), ".", serialize_subst), "[\128-\255]", _210_) + end + local function global_mangling(str) + if utils["valid-lua-identifier?"](str) then + return str + else + local function _211_(_241) + return string.format("_%02x", _241:byte()) + end + return ("__fnl_global__" .. str:gsub("[^%w]", _211_)) + end + end + local function global_unmangling(identifier) + local _213_ = string.match(identifier, "^__fnl_global__(.*)$") + if (nil ~= _213_) then + local rest = _213_ + local _214_ + local function _215_(_241) + return string.char(tonumber(_241:sub(2), 16)) + end + _214_ = string.gsub(rest, "_[%da-f][%da-f]", _215_) + return _214_ + elseif true then + local _ = _213_ + return identifier + else + return nil + end + end + local allowed_globals = nil + local function global_allowed_3f(name) + return (not allowed_globals or utils["member?"](name, allowed_globals)) + end + local function unique_mangling(original, mangling, scope, append) + if (scope.unmanglings[mangling] and not scope.gensyms[mangling]) then + return unique_mangling(original, (original .. append), scope, (append + 1)) + else + return mangling + end + end + local function local_mangling(str, scope, ast, _3ftemp_manglings) + assert_compile(not utils["multi-sym?"](str), ("unexpected multi symbol " .. str), ast) + local raw + if ((utils["lua-keywords"])[str] or str:match("^%d")) then + raw = ("_" .. str) + else + raw = str + end + local mangling + local function _219_(_241) + return string.format("_%02x", _241:byte()) + end + mangling = string.gsub(string.gsub(raw, "-", "_"), "[^%w_]", _219_) + local unique = unique_mangling(mangling, mangling, scope, 0) + do end (scope.unmanglings)[unique] = str + do + local manglings = (_3ftemp_manglings or scope.manglings) + do end (manglings)[str] = unique + end + return unique + end + local function apply_manglings(scope, new_manglings, ast) + for raw, mangled in pairs(new_manglings) do + assert_compile(not scope.refedglobals[mangled], ("use of global " .. raw .. " is aliased by a local"), ast) + do end (scope.manglings)[raw] = mangled + end + return nil + end + local function combine_parts(parts, scope) + local ret = (scope.manglings[parts[1]] or global_mangling(parts[1])) + for i = 2, #parts do + if utils["valid-lua-identifier?"](parts[i]) then + if (parts["multi-sym-method-call"] and (i == #parts)) then + ret = (ret .. ":" .. parts[i]) + else + ret = (ret .. "." .. parts[i]) + end + else + ret = (ret .. "[" .. serialize_string(parts[i]) .. "]") + end + end + return ret + end + local function next_append() + utils.root.scope["gensym-append"] = ((utils.root.scope["gensym-append"] or 0) + 1) + return ("_" .. utils.root.scope["gensym-append"] .. "_") + end + local function gensym(scope, _3fbase, _3fsuffix) + local mangling = ((_3fbase or "") .. next_append() .. (_3fsuffix or "")) + while scope.unmanglings[mangling] do + mangling = ((_3fbase or "") .. next_append() .. (_3fsuffix or "")) + end + scope.unmanglings[mangling] = (_3fbase or true) + do end (scope.gensyms)[mangling] = true + return mangling + end + local function autogensym(base, scope) + local _222_ = utils["multi-sym?"](base) + if (nil ~= _222_) then + local parts = _222_ + parts[1] = autogensym(parts[1], scope) + return table.concat(parts, ((parts["multi-sym-method-call"] and ":") or ".")) + elseif true then + local _ = _222_ + local function _223_() + local mangling = gensym(scope, base:sub(1, ( - 2)), "auto") + do end (scope.autogensyms)[base] = mangling + return mangling + end + return (scope.autogensyms[base] or _223_()) + else + return nil + end + end + local function check_binding_valid(symbol, scope, ast) + local name = tostring(symbol) + assert_compile(not name:find("&"), "illegal character &") + assert_compile(not (scope.specials[name] or scope.macros[name]), ("local %s was overshadowed by a special form or macro"):format(name), ast) + return assert_compile(not utils["quoted?"](symbol), string.format("macro tried to bind %s without gensym", name), symbol) + end + local function declare_local(symbol, meta, scope, ast, _3ftemp_manglings) + check_binding_valid(symbol, scope, ast) + local name = tostring(symbol) + assert_compile(not utils["multi-sym?"](name), ("unexpected multi symbol " .. name), ast) + do end (scope.symmeta)[name] = meta + return local_mangling(name, scope, ast, _3ftemp_manglings) + end + local function hashfn_arg_name(name, multi_sym_parts, scope) + if not scope.hashfn then + return nil + elseif (name == "$") then + return "$1" + elseif multi_sym_parts then + if (multi_sym_parts and (multi_sym_parts[1] == "$")) then + multi_sym_parts[1] = "$1" + else + end + return table.concat(multi_sym_parts, ".") + else + return nil + end + end + local function symbol_to_expression(symbol, scope, _3freference_3f) + utils.hook("symbol-to-expression", symbol, scope, _3freference_3f) + local name = symbol[1] + local multi_sym_parts = utils["multi-sym?"](name) + local name0 = (hashfn_arg_name(name, multi_sym_parts, scope) or name) + local parts = (multi_sym_parts or {name0}) + local etype = (((#parts > 1) and "expression") or "sym") + local local_3f = scope.manglings[parts[1]] + if (local_3f and scope.symmeta[parts[1]]) then + scope.symmeta[parts[1]]["used"] = true + else + end + assert_compile(not scope.macros[parts[1]], "tried to reference a macro at runtime", symbol) + assert_compile((not _3freference_3f or local_3f or ("_ENV" == parts[1]) or global_allowed_3f(parts[1])), ("unknown identifier in strict mode: " .. tostring(parts[1])), symbol) + if (allowed_globals and not local_3f and scope.parent) then + scope.parent.refedglobals[parts[1]] = true + else + end + return utils.expr(combine_parts(parts, scope), etype) + end + local function emit(chunk, out, _3fast) + if (type(out) == "table") then + return table.insert(chunk, out) + else + return table.insert(chunk, {ast = _3fast, leaf = out}) + end + end + local function peephole(chunk) + if chunk.leaf then + return chunk + elseif ((#chunk >= 3) and ((chunk[(#chunk - 2)]).leaf == "do") and not (chunk[(#chunk - 1)]).leaf and (chunk[#chunk].leaf == "end")) then + local kid = peephole(chunk[(#chunk - 1)]) + local new_chunk = {ast = chunk.ast} + for i = 1, (#chunk - 3) do + table.insert(new_chunk, peephole(chunk[i])) + end + for i = 1, #kid do + table.insert(new_chunk, kid[i]) + end + return new_chunk + else + return utils.map(chunk, peephole) + end + end + local function flatten_chunk_correlated(main_chunk, options) + local function flatten(chunk, out, last_line, file) + local last_line0 = last_line + if chunk.leaf then + out[last_line0] = ((out[last_line0] or "") .. " " .. chunk.leaf) + else + for _, subchunk in ipairs(chunk) do + if (subchunk.leaf or (#subchunk > 0)) then + local source = utils["ast-source"](subchunk.ast) + if (file == source.filename) then + last_line0 = math.max(last_line0, (source.line or 0)) + else + end + last_line0 = flatten(subchunk, out, last_line0, file) + else + end + end + end + return last_line0 + end + local out = {} + local last = flatten(main_chunk, out, 1, options.filename) + for i = 1, last do + if (out[i] == nil) then + out[i] = "" + else + end + end + return table.concat(out, "\n") + end + local function flatten_chunk(sm, chunk, tab, depth) + if chunk.leaf then + local code = chunk.leaf + local info = chunk.ast + if sm then + table.insert(sm, {(info and info.filename), (info and info.line)}) + else + end + return code + else + local tab0 + do + local _236_ = tab + if (_236_ == true) then + tab0 = " " + elseif (_236_ == false) then + tab0 = "" + elseif (_236_ == tab) then + tab0 = tab + elseif (_236_ == nil) then + tab0 = "" + else + tab0 = nil + end + end + local function parter(c) + if (c.leaf or (#c > 0)) then + local sub = flatten_chunk(sm, c, tab0, (depth + 1)) + if (depth > 0) then + return (tab0 .. sub:gsub("\n", ("\n" .. tab0))) + else + return sub + end + else + return nil + end + end + return table.concat(utils.map(chunk, parter), "\n") + end + end + local sourcemap = {} + local function make_short_src(source) + local source0 = source:gsub("\n", " ") + if (#source0 <= 49) then + return ("[fennel \"" .. source0 .. "\"]") + else + return ("[fennel \"" .. source0:sub(1, 46) .. "...\"]") + end + end + local function flatten(chunk, options) + local chunk0 = peephole(chunk) + if options.correlate then + return flatten_chunk_correlated(chunk0, options), {} + else + local sm = {} + local ret = flatten_chunk(sm, chunk0, options.indent, 0) + if sm then + sm.short_src = (options.filename or make_short_src((options.source or ret))) + if options.filename then + sm.key = ("@" .. options.filename) + else + sm.key = ret + end + sourcemap[sm.key] = sm + else + end + return ret, sm + end + end + local function make_metadata() + local function _245_(self, tgt, key) + if self[tgt] then + return self[tgt][key] + else + return nil + end + end + local function _247_(self, tgt, key, value) + self[tgt] = (self[tgt] or {}) + do end (self[tgt])[key] = value + return tgt + end + local function _248_(self, tgt, ...) + local kv_len = select("#", ...) + local kvs = {...} + if ((kv_len % 2) ~= 0) then + error("metadata:setall() expected even number of k/v pairs") + else + end + self[tgt] = (self[tgt] or {}) + for i = 1, kv_len, 2 do + self[tgt][kvs[i]] = kvs[(i + 1)] + end + return tgt + end + return setmetatable({}, {__index = {get = _245_, set = _247_, setall = _248_}, __mode = "k"}) + end + local function exprs1(exprs) + return table.concat(utils.map(exprs, tostring), ", ") + end + local function keep_side_effects(exprs, chunk, start, ast) + local start0 = (start or 1) + for j = start0, #exprs do + local se = exprs[j] + if ((se.type == "expression") and (se[1] ~= "nil")) then + emit(chunk, string.format("do local _ = %s end", tostring(se)), ast) + elseif (se.type == "statement") then + local code = tostring(se) + local disambiguated + if (code:byte() == 40) then + disambiguated = ("do end " .. code) + else + disambiguated = code + end + emit(chunk, disambiguated, ast) + else + end + end + return nil + end + local function handle_compile_opts(exprs, parent, opts, ast) + if opts.nval then + local n = opts.nval + local len = #exprs + if (n ~= len) then + if (len > n) then + keep_side_effects(exprs, parent, (n + 1), ast) + for i = (n + 1), len do + exprs[i] = nil + end + else + for i = (#exprs + 1), n do + exprs[i] = utils.expr("nil", "literal") + end + end + else + end + else + end + if opts.tail then + emit(parent, string.format("return %s", exprs1(exprs)), ast) + else + end + if opts.target then + local result = exprs1(exprs) + local function _256_() + if (result == "") then + return "nil" + else + return result + end + end + emit(parent, string.format("%s = %s", opts.target, _256_()), ast) + else + end + if (opts.tail or opts.target) then + return {returned = true} + else + local _258_ = exprs + _258_["returned"] = true + return _258_ + end + end + local function find_macro(ast, scope, multi_sym_parts) + local function find_in_table(t, i) + if (i <= #multi_sym_parts) then + return find_in_table((utils["table?"](t) and t[multi_sym_parts[i]]), (i + 1)) + else + return t + end + end + local macro_2a = (utils["sym?"](ast[1]) and scope.macros[tostring(ast[1])]) + if (not macro_2a and multi_sym_parts) then + local nested_macro = find_in_table(scope.macros, 1) + assert_compile((not scope.macros[multi_sym_parts[1]] or (type(nested_macro) == "function")), "macro not found in imported macro module", ast) + return nested_macro + else + return macro_2a + end + end + local function propagate_trace_info(_262_, _index, node) + local _arg_263_ = _262_ + local filename = _arg_263_["filename"] + local line = _arg_263_["line"] + local bytestart = _arg_263_["bytestart"] + local byteend = _arg_263_["byteend"] + if (("table" == type(node)) and (filename ~= node.filename)) then + local src = utils["ast-source"](node) + src.filename, src.line = filename, line + src.bytestart, src.byteend = bytestart, byteend + else + end + return ("table" == type(node)) + end + local function macroexpand_2a(ast, scope, _3fonce) + local _265_ + if utils["list?"](ast) then + _265_ = find_macro(ast, scope, utils["multi-sym?"](ast[1])) + else + _265_ = nil + end + if (_265_ == false) then + return ast + elseif (nil ~= _265_) then + local macro_2a = _265_ + local old_scope = scopes.macro + local _ + scopes.macro = scope + _ = nil + local ok, transformed = nil, nil + local function _267_() + return macro_2a(unpack(ast, 2)) + end + ok, transformed = xpcall(_267_, debug.traceback) + local function _269_() + local _268_ = ast + local function _270_(...) + return propagate_trace_info(_268_, ...) + end + return _270_ + end + utils["walk-tree"](transformed, _269_()) + scopes.macro = old_scope + assert_compile(ok, transformed, ast) + if (_3fonce or not transformed) then + return transformed + else + return macroexpand_2a(transformed, scope) + end + elseif true then + local _ = _265_ + return ast + else + return nil + end + end + local function compile_special(ast, scope, parent, opts, special) + local exprs = (special(ast, scope, parent, opts) or utils.expr("nil", "literal")) + local exprs0 + if ("table" ~= type(exprs)) then + exprs0 = utils.expr(exprs, "expression") + else + exprs0 = exprs + end + local exprs2 + if utils["expr?"](exprs0) then + exprs2 = {exprs0} + else + exprs2 = exprs0 + end + if not exprs2.returned then + return handle_compile_opts(exprs2, parent, opts, ast) + elseif (opts.tail or opts.target) then + return {returned = true} + else + return exprs2 + end + end + local function compile_function_call(ast, scope, parent, opts, compile1, len) + local fargs = {} + local fcallee = (compile1(ast[1], scope, parent, {nval = 1}))[1] + assert_compile((("string" == type(ast[1])) or (fcallee.type ~= "literal")), ("cannot call literal value " .. tostring(ast[1])), ast) + for i = 2, len do + local subexprs + local _276_ + if (i ~= len) then + _276_ = 1 + else + _276_ = nil + end + subexprs = compile1(ast[i], scope, parent, {nval = _276_}) + table.insert(fargs, (subexprs[1] or utils.expr("nil", "literal"))) + if (i == len) then + for j = 2, #subexprs do + table.insert(fargs, subexprs[j]) + end + else + keep_side_effects(subexprs, parent, 2, ast[i]) + end + end + local pat + if ("string" == type(ast[1])) then + pat = "(%s)(%s)" + else + pat = "%s(%s)" + end + local call = string.format(pat, tostring(fcallee), exprs1(fargs)) + return handle_compile_opts({utils.expr(call, "statement")}, parent, opts, ast) + end + local function compile_call(ast, scope, parent, opts, compile1) + utils.hook("call", ast, scope) + local len = #ast + local first = ast[1] + local multi_sym_parts = utils["multi-sym?"](first) + local special = (utils["sym?"](first) and scope.specials[tostring(first)]) + assert_compile((len > 0), "expected a function, macro, or special to call", ast) + if special then + return compile_special(ast, scope, parent, opts, special) + elseif (multi_sym_parts and multi_sym_parts["multi-sym-method-call"]) then + local table_with_method = table.concat({unpack(multi_sym_parts, 1, (#multi_sym_parts - 1))}, ".") + local method_to_call = multi_sym_parts[#multi_sym_parts] + local new_ast = utils.list(utils.sym(":", nil, scope), utils.sym(table_with_method, nil, scope), method_to_call, select(2, unpack(ast))) + return compile1(new_ast, scope, parent, opts) + else + return compile_function_call(ast, scope, parent, opts, compile1, len) + end + end + local function compile_varg(ast, scope, parent, opts) + assert_compile(scope.vararg, "unexpected vararg", ast) + return handle_compile_opts({utils.expr("...", "varg")}, parent, opts, ast) + end + local function compile_sym(ast, scope, parent, opts) + local multi_sym_parts = utils["multi-sym?"](ast) + assert_compile(not (multi_sym_parts and multi_sym_parts["multi-sym-method-call"]), "multisym method calls may only be in call position", ast) + local e + if (ast[1] == "nil") then + e = utils.expr("nil", "literal") + else + e = symbol_to_expression(ast, scope, true) + end + return handle_compile_opts({e}, parent, opts, ast) + end + local function serialize_number(n) + local _282_ = string.gsub(tostring(n), ",", ".") + return _282_ + end + local function compile_scalar(ast, _scope, parent, opts) + local serialize + do + local _283_ = type(ast) + if (_283_ == "nil") then + serialize = tostring + elseif (_283_ == "boolean") then + serialize = tostring + elseif (_283_ == "string") then + serialize = serialize_string + elseif (_283_ == "number") then + serialize = serialize_number + else + serialize = nil + end + end + return handle_compile_opts({utils.expr(serialize(ast), "literal")}, parent, opts) + end + local function compile_table(ast, scope, parent, opts, compile1) + local buffer = {} + local function write_other_values(k) + if ((type(k) ~= "number") or (math.floor(k) ~= k) or (k < 1) or (k > #ast)) then + if ((type(k) == "string") and utils["valid-lua-identifier?"](k)) then + return {k, k} + else + local _let_285_ = compile1(k, scope, parent, {nval = 1}) + local compiled = _let_285_[1] + local kstr = ("[" .. tostring(compiled) .. "]") + return {kstr, k} + end + else + return nil + end + end + do + local keys + do + local tbl_14_auto = {} + local i_15_auto = #tbl_14_auto + for k, v in utils.stablepairs(ast) do + local val_16_auto = write_other_values(k, v) + if (nil ~= val_16_auto) then + i_15_auto = (i_15_auto + 1) + do end (tbl_14_auto)[i_15_auto] = val_16_auto + else + end + end + keys = tbl_14_auto + end + local function _291_(_289_) + local _arg_290_ = _289_ + local k1 = _arg_290_[1] + local k2 = _arg_290_[2] + local _let_292_ = compile1(ast[k2], scope, parent, {nval = 1}) + local v = _let_292_[1] + return string.format("%s = %s", k1, tostring(v)) + end + utils.map(keys, _291_, buffer) + end + for i = 1, #ast do + local nval = ((i ~= #ast) and 1) + table.insert(buffer, exprs1(compile1(ast[i], scope, parent, {nval = nval}))) + end + return handle_compile_opts({utils.expr(("{" .. table.concat(buffer, ", ") .. "}"), "expression")}, parent, opts, ast) + end + local function compile1(ast, scope, parent, _3fopts) + local opts = (_3fopts or {}) + local ast0 = macroexpand_2a(ast, scope) + if utils["list?"](ast0) then + return compile_call(ast0, scope, parent, opts, compile1) + elseif utils["varg?"](ast0) then + return compile_varg(ast0, scope, parent, opts) + elseif utils["sym?"](ast0) then + return compile_sym(ast0, scope, parent, opts) + elseif (type(ast0) == "table") then + return compile_table(ast0, scope, parent, opts, compile1) + elseif ((type(ast0) == "nil") or (type(ast0) == "boolean") or (type(ast0) == "number") or (type(ast0) == "string")) then + return compile_scalar(ast0, scope, parent, opts) + else + return assert_compile(false, ("could not compile value of type " .. type(ast0)), ast0) + end + end + local function destructure(to, from, ast, scope, parent, opts) + local opts0 = (opts or {}) + local _let_294_ = opts0 + local isvar = _let_294_["isvar"] + local declaration = _let_294_["declaration"] + local forceglobal = _let_294_["forceglobal"] + local forceset = _let_294_["forceset"] + local symtype = _let_294_["symtype"] + local symtype0 = ("_" .. (symtype or "dst")) + local setter + if declaration then + setter = "local %s = %s" + else + setter = "%s = %s" + end + local new_manglings = {} + local function getname(symbol, up1) + local raw = symbol[1] + assert_compile(not (opts0.nomulti and utils["multi-sym?"](raw)), ("unexpected multi symbol " .. raw), up1) + if declaration then + return declare_local(symbol, nil, scope, symbol, new_manglings) + else + local parts = (utils["multi-sym?"](raw) or {raw}) + local meta = scope.symmeta[parts[1]] + assert_compile(not raw:find(":"), "cannot set method sym", symbol) + if ((#parts == 1) and not forceset) then + assert_compile(not (forceglobal and meta), string.format("global %s conflicts with local", tostring(symbol)), symbol) + assert_compile(not (meta and not meta.var), ("expected var " .. raw), symbol) + assert_compile((meta or not opts0.noundef), ("expected local " .. parts[1]), symbol) + else + end + if forceglobal then + assert_compile(not scope.symmeta[scope.unmanglings[raw]], ("global " .. raw .. " conflicts with local"), symbol) + do end (scope.manglings)[raw] = global_mangling(raw) + do end (scope.unmanglings)[global_mangling(raw)] = raw + if allowed_globals then + table.insert(allowed_globals, raw) + else + end + else + end + return symbol_to_expression(symbol, scope)[1] + end + end + local function compile_top_target(lvalues) + local inits + local function _300_(_241) + if scope.manglings[_241] then + return _241 + else + return "nil" + end + end + inits = utils.map(lvalues, _300_) + local init = table.concat(inits, ", ") + local lvalue = table.concat(lvalues, ", ") + local plen, plast = #parent, parent[#parent] + local ret = compile1(from, scope, parent, {target = lvalue}) + if declaration then + for pi = plen, #parent do + if (parent[pi] == plast) then + plen = pi + else + end + end + if ((#parent == (plen + 1)) and parent[#parent].leaf) then + parent[#parent]["leaf"] = ("local " .. parent[#parent].leaf) + elseif (init == "nil") then + table.insert(parent, (plen + 1), {ast = ast, leaf = ("local " .. lvalue)}) + else + table.insert(parent, (plen + 1), {ast = ast, leaf = ("local " .. lvalue .. " = " .. init)}) + end + else + end + return ret + end + local function destructure_sym(left, rightexprs, up1, top_3f) + local lname = getname(left, up1) + check_binding_valid(left, scope, left) + if top_3f then + compile_top_target({lname}) + else + emit(parent, setter:format(lname, exprs1(rightexprs)), left) + end + if declaration then + scope.symmeta[tostring(left)] = {var = isvar} + return nil + else + return nil + end + end + local function destructure_table(left, rightexprs, top_3f, destructure1) + local s = gensym(scope, symtype0) + local right + do + local _307_ + if top_3f then + _307_ = exprs1(compile1(from, scope, parent)) + else + _307_ = exprs1(rightexprs) + end + if (_307_ == "") then + right = "nil" + elseif (nil ~= _307_) then + local right0 = _307_ + right = right0 + else + right = nil + end + end + emit(parent, string.format("local %s = %s", s, right), left) + for k, v in utils.stablepairs(left) do + if not (("number" == type(k)) and tostring(left[(k - 1)]):find("^&")) then + if (utils["sym?"](v) and (tostring(v) == "&")) then + local unpack_str = "(function (t, k)\n local mt = getmetatable(t)\n if \"table\" == type(mt) and mt.__fennelrest then\n return mt.__fennelrest(t, k)\n else\n return {(table.unpack or unpack)(t, k)}\n end\n end)(%s, %s)" + local formatted = string.format(string.gsub(unpack_str, "\n%s*", " "), s, k) + local subexpr = utils.expr(formatted, "expression") + assert_compile((utils["sequence?"](left) and (nil == left[(k + 2)])), "expected rest argument before last parameter", left) + destructure1(left[(k + 1)], {subexpr}, left) + elseif (utils["sym?"](k) and (tostring(k) == "&as")) then + destructure_sym(v, {utils.expr(tostring(s))}, left) + elseif (utils["sequence?"](left) and (tostring(v) == "&as")) then + local _, next_sym, trailing = select(k, unpack(left)) + assert_compile((nil == trailing), "expected &as argument before last parameter", left) + destructure_sym(next_sym, {utils.expr(tostring(s))}, left) + else + local key + if (type(k) == "string") then + key = serialize_string(k) + else + key = k + end + local subexpr = utils.expr(string.format("%s[%s]", s, key), "expression") + destructure1(v, {subexpr}, left) + end + else + end + end + return nil + end + local function destructure_values(left, up1, top_3f, destructure1) + local left_names, tables = {}, {} + for i, name in ipairs(left) do + if utils["sym?"](name) then + table.insert(left_names, getname(name, up1)) + else + local symname = gensym(scope, symtype0) + table.insert(left_names, symname) + do end (tables)[i] = {name, utils.expr(symname, "sym")} + end + end + assert_compile(top_3f, "can't nest multi-value destructuring", left) + compile_top_target(left_names) + if declaration then + for _, sym in ipairs(left) do + if utils["sym?"](sym) then + scope.symmeta[tostring(sym)] = {var = isvar} + else + end + end + else + end + for _, pair in utils.stablepairs(tables) do + destructure1(pair[1], {pair[2]}, left) + end + return nil + end + local function destructure1(left, rightexprs, up1, top_3f) + if (utils["sym?"](left) and (left[1] ~= "nil")) then + destructure_sym(left, rightexprs, up1, top_3f) + elseif utils["table?"](left) then + destructure_table(left, rightexprs, top_3f, destructure1) + elseif utils["list?"](left) then + destructure_values(left, up1, top_3f, destructure1) + else + assert_compile(false, string.format("unable to bind %s %s", type(left), tostring(left)), (((type((up1)[2]) == "table") and (up1)[2]) or up1)) + end + if top_3f then + return {returned = true} + else + return nil + end + end + local ret = destructure1(to, nil, ast, true) + utils.hook("destructure", from, to, scope) + apply_manglings(scope, new_manglings, ast) + return ret + end + local function require_include(ast, scope, parent, opts) + opts.fallback = function(e) + utils.warn(("include module not found, falling back to require: %s"):format(tostring(e))) + return utils.expr(string.format("require(%s)", tostring(e)), "statement") + end + return scopes.global.specials.include(ast, scope, parent, opts) + end + local function compile_stream(strm, options) + local opts = utils.copy(options) + local old_globals = allowed_globals + local scope = (opts.scope or make_scope(scopes.global)) + local vals = {} + local chunk = {} + do end (function(tgt, m, ...) return tgt[m](tgt, ...) end)(utils.root, "set-reset") + allowed_globals = opts.allowedGlobals + if (opts.indent == nil) then + opts.indent = " " + else + end + if opts.requireAsInclude then + scope.specials.require = require_include + else + end + utils.root.chunk, utils.root.scope, utils.root.options = chunk, scope, opts + for _, val in parser.parser(strm, opts.filename, opts) do + table.insert(vals, val) + end + for i = 1, #vals do + local exprs = compile1(vals[i], scope, chunk, {nval = (((i < #vals) and 0) or nil), tail = (i == #vals)}) + keep_side_effects(exprs, chunk, nil, vals[i]) + if (i == #vals) then + utils.hook("chunk", vals[i], scope) + else + end + end + allowed_globals = old_globals + utils.root.reset() + return flatten(chunk, opts) + end + local function compile_string(str, opts) + return compile_stream(parser["string-stream"](str), (opts or {})) + end + local function compile(ast, opts) + local opts0 = utils.copy(opts) + local old_globals = allowed_globals + local chunk = {} + local scope = (opts0.scope or make_scope(scopes.global)) + do end (function(tgt, m, ...) return tgt[m](tgt, ...) end)(utils.root, "set-reset") + allowed_globals = opts0.allowedGlobals + if (opts0.indent == nil) then + opts0.indent = " " + else + end + if opts0.requireAsInclude then + scope.specials.require = require_include + else + end + utils.root.chunk, utils.root.scope, utils.root.options = chunk, scope, opts0 + local exprs = compile1(ast, scope, chunk, {tail = true}) + keep_side_effects(exprs, chunk, nil, ast) + utils.hook("chunk", ast, scope) + allowed_globals = old_globals + utils.root.reset() + return flatten(chunk, opts0) + end + local function traceback_frame(info) + if ((info.what == "C") and info.name) then + return string.format(" [C]: in function '%s'", info.name) + elseif (info.what == "C") then + return " [C]: in ?" + else + local remap = sourcemap[info.source] + if (remap and remap[info.currentline]) then + if remap[info.currentline][1] then + info.short_src = sourcemap[("@" .. remap[info.currentline][1])].short_src + else + info.short_src = remap.short_src + end + info.currentline = (remap[info.currentline][2] or -1) + else + end + if (info.what == "Lua") then + local function _325_() + if info.name then + return ("'" .. info.name .. "'") + else + return "?" + end + end + return string.format(" %s:%d: in function %s", info.short_src, info.currentline, _325_()) + elseif (info.short_src == "(tail call)") then + return " (tail call)" + else + return string.format(" %s:%d: in main chunk", info.short_src, info.currentline) + end + end + end + local function traceback(msg, start) + local msg0 = tostring((msg or "")) + if ((msg0:find("^Compile error") or msg0:find("^Parse error")) and not utils["debug-on?"]("trace")) then + return msg0 + else + local lines = {} + if (msg0:find(":%d+: Compile error") or msg0:find(":%d+: Parse error")) then + table.insert(lines, msg0) + else + local newmsg = msg0:gsub("^[^:]*:%d+:%s+", "runtime error: ") + table.insert(lines, newmsg) + end + table.insert(lines, "stack traceback:") + local done_3f, level = false, (start or 2) + while not done_3f do + do + local _329_ = debug.getinfo(level, "Sln") + if (_329_ == nil) then + done_3f = true + elseif (nil ~= _329_) then + local info = _329_ + table.insert(lines, traceback_frame(info)) + else + end + end + level = (level + 1) + end + return table.concat(lines, "\n") + end + end + local function entry_transform(fk, fv) + local function _332_(k, v) + if (type(k) == "number") then + return k, fv(v) + else + return fk(k), fv(v) + end + end + return _332_ + end + local function mixed_concat(t, joiner) + local seen = {} + local ret, s = "", "" + for k, v in ipairs(t) do + table.insert(seen, k) + ret = (ret .. s .. v) + s = joiner + end + for k, v in utils.stablepairs(t) do + if not seen[k] then + ret = (ret .. s .. "[" .. k .. "]" .. "=" .. v) + s = joiner + else + end + end + return ret + end + local function do_quote(form, scope, parent, runtime_3f) + local function q(x) + return do_quote(x, scope, parent, runtime_3f) + end + if utils["varg?"](form) then + assert_compile(not runtime_3f, "quoted ... may only be used at compile time", form) + return "_VARARG" + elseif utils["sym?"](form) then + local filename + if form.filename then + filename = string.format("%q", form.filename) + else + filename = "nil" + end + local symstr = tostring(form) + assert_compile(not runtime_3f, "symbols may only be used at compile time", form) + if (symstr:find("#$") or symstr:find("#[:.]")) then + return string.format("sym('%s', {filename=%s, line=%s})", autogensym(symstr, scope), filename, (form.line or "nil")) + else + return string.format("sym('%s', {quoted=true, filename=%s, line=%s})", symstr, filename, (form.line or "nil")) + end + elseif (utils["list?"](form) and utils["sym?"](form[1]) and (tostring(form[1]) == "unquote")) then + local payload = form[2] + local res = unpack(compile1(payload, scope, parent)) + return res[1] + elseif utils["list?"](form) then + local mapped + local function _337_() + return nil + end + mapped = utils.kvmap(form, entry_transform(_337_, q)) + local filename + if form.filename then + filename = string.format("%q", form.filename) + else + filename = "nil" + end + assert_compile(not runtime_3f, "lists may only be used at compile time", form) + return string.format(("setmetatable({filename=%s, line=%s, bytestart=%s, %s}" .. ", getmetatable(list()))"), filename, (form.line or "nil"), (form.bytestart or "nil"), mixed_concat(mapped, ", ")) + elseif utils["sequence?"](form) then + local mapped = utils.kvmap(form, entry_transform(q, q)) + local source = getmetatable(form) + local filename + if source.filename then + filename = string.format("%q", source.filename) + else + filename = "nil" + end + local _340_ + if source then + _340_ = source.line + else + _340_ = "nil" + end + return string.format("setmetatable({%s}, {filename=%s, line=%s, sequence=%s})", mixed_concat(mapped, ", "), filename, _340_, "(getmetatable(sequence()))['sequence']") + elseif (type(form) == "table") then + local mapped = utils.kvmap(form, entry_transform(q, q)) + local source = getmetatable(form) + local filename + if source.filename then + filename = string.format("%q", source.filename) + else + filename = "nil" + end + local function _343_() + if source then + return source.line + else + return "nil" + end + end + return string.format("setmetatable({%s}, {filename=%s, line=%s})", mixed_concat(mapped, ", "), filename, _343_()) + elseif (type(form) == "string") then + return serialize_string(form) + else + return tostring(form) + end + end + return {compile = compile, compile1 = compile1, ["compile-stream"] = compile_stream, ["compile-string"] = compile_string, emit = emit, destructure = destructure, ["require-include"] = require_include, autogensym = autogensym, gensym = gensym, ["do-quote"] = do_quote, ["global-mangling"] = global_mangling, ["global-unmangling"] = global_unmangling, ["apply-manglings"] = apply_manglings, macroexpand = macroexpand_2a, ["declare-local"] = declare_local, ["make-scope"] = make_scope, ["keep-side-effects"] = keep_side_effects, ["symbol-to-expression"] = symbol_to_expression, assert = assert_compile, scopes = scopes, traceback = traceback, metadata = make_metadata(), sourcemap = sourcemap} +end +package.preload["fennel.friend"] = package.preload["fennel.friend"] or function(...) + local utils = require("fennel.utils") + local suggestions = {["unexpected multi symbol (.*)"] = {"removing periods or colons from %s"}, ["use of global (.*) is aliased by a local"] = {"renaming local %s", "refer to the global using _G.%s instead of directly"}, ["local (.*) was overshadowed by a special form or macro"] = {"renaming local %s"}, ["global (.*) conflicts with local"] = {"renaming local %s"}, ["expected var (.*)"] = {"declaring %s using var instead of let/local", "introducing a new local instead of changing the value of %s"}, ["expected macros to be table"] = {"ensuring your macro definitions return a table"}, ["expected each macro to be function"] = {"ensuring that the value for each key in your macros table contains a function", "avoid defining nested macro tables"}, ["macro not found in macro module"] = {"checking the keys of the imported macro module's returned table"}, ["macro tried to bind (.*) without gensym"] = {"changing to %s# when introducing identifiers inside macros"}, ["unknown identifier in strict mode: (.*)"] = {"looking to see if there's a typo", "using the _G table instead, eg. _G.%s if you really want a global", "moving this code to somewhere that %s is in scope", "binding %s as a local in the scope of this code"}, ["expected a function.* to call"] = {"removing the empty parentheses", "using square brackets if you want an empty table"}, ["cannot call literal value"] = {"checking for typos", "checking for a missing function name"}, ["unexpected vararg"] = {"putting \"...\" at the end of the fn parameters if the vararg was intended"}, ["multisym method calls may only be in call position"] = {"using a period instead of a colon to reference a table's fields", "putting parens around this"}, ["unused local (.*)"] = {"renaming the local to _%s if it is meant to be unused", "fixing a typo so %s is used", "disabling the linter which checks for unused locals"}, ["expected parameters"] = {"adding function parameters as a list of identifiers in brackets"}, ["unable to bind (.*)"] = {"replacing the %s with an identifier"}, ["expected rest argument before last parameter"] = {"moving & to right before the final identifier when destructuring"}, ["expected vararg as last parameter"] = {"moving the \"...\" to the end of the parameter list"}, ["expected symbol for function parameter: (.*)"] = {"changing %s to an identifier instead of a literal value"}, ["could not compile value of type "] = {"debugging the macro you're calling to return a list or table"}, ["expected local"] = {"looking for a typo", "looking for a local which is used out of its scope"}, ["expected body expression"] = {"putting some code in the body of this form after the bindings"}, ["expected binding and iterator"] = {"making sure you haven't omitted a local name or iterator"}, ["expected binding sequence"] = {"placing a table here in square brackets containing identifiers to bind"}, ["expected even number of name/value bindings"] = {"finding where the identifier or value is missing"}, ["may only be used at compile time"] = {"moving this to inside a macro if you need to manipulate symbols/lists", "using square brackets instead of parens to construct a table"}, ["unexpected closing delimiter (.)"] = {"deleting %s", "adding matching opening delimiter earlier"}, ["mismatched closing delimiter (.), expected (.)"] = {"replacing %s with %s", "deleting %s", "adding matching opening delimiter earlier"}, ["expected even number of values in table literal"] = {"removing a key", "adding a value"}, ["expected whitespace before opening delimiter"] = {"adding whitespace"}, ["illegal character: (.)"] = {"deleting or replacing %s", "avoiding reserved characters like \", \\, ', ~, ;, @, `, and comma"}, ["could not read number (.*)"] = {"removing the non-digit character", "beginning the identifier with a non-digit if it is not meant to be a number"}, ["can't start multisym segment with a digit"] = {"removing the digit", "adding a non-digit before the digit"}, ["malformed multisym"] = {"ensuring each period or colon is not followed by another period or colon"}, ["method must be last component"] = {"using a period instead of a colon for field access", "removing segments after the colon", "making the method call, then looking up the field on the result"}, ["$ and $... in hashfn are mutually exclusive"] = {"modifying the hashfn so it only contains $... or $, $1, $2, $3, etc"}, ["tried to reference a macro at runtime"] = {"renaming the macro so as not to conflict with locals"}, ["expected even number of pattern/body pairs"] = {"checking that every pattern has a body to go with it", "adding _ before the final body"}, ["unexpected arguments"] = {"removing an argument", "checking for typos"}, ["unexpected iterator clause"] = {"removing an argument", "checking for typos"}} + local unpack = (table.unpack or _G.unpack) + local function suggest(msg) + local suggestion = nil + for pat, sug in pairs(suggestions) do + local matches = {msg:match(pat)} + if (0 < #matches) then + if ("table" == type(sug)) then + local out = {} + for _, s in ipairs(sug) do + table.insert(out, s:format(unpack(matches))) + end + suggestion = out + else + suggestion = sug(matches) + end + else + end + end + return suggestion + end + local function read_line_from_file(filename, line) + local bytes = 0 + local f = assert(io.open(filename)) + local _ + for _0 = 1, (line - 1) do + bytes = (bytes + 1 + #f:read()) + end + _ = nil + local codeline = f:read() + f:close() + return codeline, bytes + end + local function read_line_from_string(matcher, target_line, _3fcurrent_line, _3fbytes) + local this_line, newline = matcher() + local current_line = (_3fcurrent_line or 1) + local bytes = ((_3fbytes or 0) + #this_line + #newline) + if (target_line == current_line) then + return this_line, (bytes - #this_line - 1) + elseif this_line then + return read_line_from_string(matcher, target_line, (current_line + 1), bytes) + else + return nil + end + end + local function read_line(filename, line, source) + if source then + return read_line_from_string(string.gmatch((source .. "\n"), "(.-)(\13?\n)"), line) + else + return read_line_from_file(filename, line) + end + end + local function friendly_msg(msg, _142_, source) + local _arg_143_ = _142_ + local filename = _arg_143_["filename"] + local line = _arg_143_["line"] + local bytestart = _arg_143_["bytestart"] + local byteend = _arg_143_["byteend"] + local ok, codeline, bol = pcall(read_line, filename, line, source) + local suggestions0 = suggest(msg) + local out = {msg, ""} + if (ok and codeline) then + table.insert(out, codeline) + else + end + if (ok and codeline and bytestart and byteend) then + table.insert(out, (string.rep(" ", (bytestart - bol - 1)) .. "^" .. string.rep("^", math.min((byteend - bytestart), ((bol + #codeline) - bytestart))))) + else + end + if (ok and codeline and bytestart and not byteend) then + table.insert(out, (string.rep("-", (bytestart - bol - 1)) .. "^")) + table.insert(out, "") + else + end + if suggestions0 then + for _, suggestion in ipairs(suggestions0) do + table.insert(out, ("* Try %s."):format(suggestion)) + end + else + end + return table.concat(out, "\n") + end + local function assert_compile(condition, msg, ast, source) + if not condition then + local _let_148_ = utils["ast-source"](ast) + local filename = _let_148_["filename"] + local line = _let_148_["line"] + error(friendly_msg(("Compile error in %s:%s\n %s"):format((filename or "unknown"), (line or "?"), msg), utils["ast-source"](ast), source), 0) + else + end + return condition + end + local function parse_error(msg, filename, line, bytestart, source) + return error(friendly_msg(("Parse error in %s:%s\n %s"):format(filename, line, msg), {filename = filename, line = line, bytestart = bytestart}, source), 0) + end + return {["assert-compile"] = assert_compile, ["parse-error"] = parse_error} +end +package.preload["fennel.parser"] = package.preload["fennel.parser"] or function(...) + local utils = require("fennel.utils") + local friend = require("fennel.friend") + local unpack = (table.unpack or _G.unpack) + local function granulate(getchunk) + local c, index, done_3f = "", 1, false + local function _150_(parser_state) + if not done_3f then + if (index <= #c) then + local b = c:byte(index) + index = (index + 1) + return b + else + local _151_ = getchunk(parser_state) + local function _152_() + local char = _151_ + return (char ~= "") + end + if ((nil ~= _151_) and _152_()) then + local char = _151_ + c = char + index = 2 + return c:byte() + elseif true then + local _ = _151_ + done_3f = true + return nil + else + return nil + end + end + else + return nil + end + end + local function _156_() + c = "" + return nil + end + return _150_, _156_ + end + local function string_stream(str) + local str0 = str:gsub("^#!", ";;") + local index = 1 + local function _157_() + local r = str0:byte(index) + index = (index + 1) + return r + end + return _157_ + end + local delims = {[40] = 41, [41] = true, [91] = 93, [93] = true, [123] = 125, [125] = true} + local function whitespace_3f(b) + return ((b == 32) or ((b >= 9) and (b <= 13))) + end + local function sym_char_3f(b) + local b0 + if ("number" == type(b)) then + b0 = b + else + b0 = string.byte(b) + end + return ((b0 > 32) and not delims[b0] and (b0 ~= 127) and (b0 ~= 34) and (b0 ~= 39) and (b0 ~= 126) and (b0 ~= 59) and (b0 ~= 44) and (b0 ~= 64) and (b0 ~= 96)) + end + local prefixes = {[35] = "hashfn", [39] = "quote", [44] = "unquote", [96] = "quote"} + local function parser(getbyte, _3ffilename, _3foptions) + local stack = {} + local line = 1 + local byteindex = 0 + local lastb = nil + local function ungetb(ub) + if (ub == 10) then + line = (line - 1) + else + end + byteindex = (byteindex - 1) + lastb = ub + return nil + end + local function getb() + local r = nil + if lastb then + r, lastb = lastb, nil + else + r = getbyte({["stack-size"] = #stack}) + end + byteindex = (byteindex + 1) + if (r == 10) then + line = (line + 1) + else + end + return r + end + assert(((nil == _3ffilename) or ("string" == type(_3ffilename))), "expected filename as second argument to parser") + local function parse_error(msg, byteindex_override) + local _let_162_ = (_3foptions or utils.root.options or {}) + local source = _let_162_["source"] + local unfriendly = _let_162_["unfriendly"] + if (nil == utils.hook("parse-error", msg, (_3ffilename or "unknown"), (line or "?"), (byteindex_override or byteindex), source, utils.root.reset)) then + utils.root.reset() + if (unfriendly or not friend or not _G.io or not _G.io.read) then + return error(string.format("%s:%s: Parse error: %s", (_3ffilename or "unknown"), (line or "?"), msg), 0) + else + return friend["parse-error"](msg, (_3ffilename or "unknown"), (line or "?"), (byteindex_override or byteindex), source) + end + else + return nil + end + end + local function parse_stream() + local whitespace_since_dispatch, done_3f, retval = true + local function dispatch(v) + local _165_ = stack[#stack] + if (_165_ == nil) then + retval, done_3f, whitespace_since_dispatch = v, true, false + return nil + elseif ((_G.type(_165_) == "table") and (nil ~= (_165_).prefix)) then + local prefix = (_165_).prefix + local source + do + local _166_ = table.remove(stack) + do end (_166_)["byteend"] = byteindex + source = _166_ + end + local list = utils.list(utils.sym(prefix, source), v) + for k, v0 in pairs(source) do + list[k] = v0 + end + return dispatch(list) + elseif (nil ~= _165_) then + local top = _165_ + whitespace_since_dispatch = false + return table.insert(top, v) + else + return nil + end + end + local function badend() + local accum = utils.map(stack, "closer") + local _168_ + if (#stack == 1) then + _168_ = "" + else + _168_ = "s" + end + return parse_error(string.format("expected closing delimiter%s %s", _168_, string.char(unpack(accum)))) + end + local function skip_whitespace(b) + if (b and whitespace_3f(b)) then + whitespace_since_dispatch = true + return skip_whitespace(getb()) + elseif (not b and (#stack > 0)) then + return badend() + else + return b + end + end + local function parse_comment(b, contents) + if (b and (10 ~= b)) then + local function _172_() + local _171_ = contents + table.insert(_171_, string.char(b)) + return _171_ + end + return parse_comment(getb(), _172_()) + elseif (_3foptions and _3foptions.comments) then + return dispatch(utils.comment(table.concat(contents), {line = (line - 1), filename = _3ffilename})) + else + return b + end + end + local function open_table(b) + if not whitespace_since_dispatch then + parse_error(("expected whitespace before opening delimiter " .. string.char(b))) + else + end + return table.insert(stack, {bytestart = byteindex, closer = delims[b], filename = _3ffilename, line = line}) + end + local function close_list(list) + return dispatch(setmetatable(list, getmetatable(utils.list()))) + end + local function close_sequence(tbl) + local val = utils.sequence(unpack(tbl)) + for k, v in pairs(tbl) do + getmetatable(val)[k] = v + end + return dispatch(val) + end + local function add_comment_at(comments, index, node) + local _175_ = comments[index] + if (nil ~= _175_) then + local existing = _175_ + return table.insert(existing, node) + elseif true then + local _ = _175_ + comments[index] = {node} + return nil + else + return nil + end + end + local function next_noncomment(tbl, i) + if utils["comment?"](tbl[i]) then + return next_noncomment(tbl, (i + 1)) + else + return tbl[i] + end + end + local function extract_comments(tbl) + local comments = {keys = {}, values = {}, last = {}} + while utils["comment?"](tbl[#tbl]) do + table.insert(comments.last, 1, table.remove(tbl)) + end + local last_key_3f = false + for i, node in ipairs(tbl) do + if not utils["comment?"](node) then + last_key_3f = not last_key_3f + elseif last_key_3f then + add_comment_at(comments.values, next_noncomment(tbl, i), node) + else + add_comment_at(comments.keys, next_noncomment(tbl, i), node) + end + end + for i = #tbl, 1, -1 do + if utils["comment?"](tbl[i]) then + table.remove(tbl, i) + else + end + end + return comments + end + local function close_curly_table(tbl) + local comments = extract_comments(tbl) + local keys = {} + local val = {} + if ((#tbl % 2) ~= 0) then + byteindex = (byteindex - 1) + parse_error("expected even number of values in table literal") + else + end + setmetatable(val, tbl) + for i = 1, #tbl, 2 do + if ((tostring(tbl[i]) == ":") and utils["sym?"](tbl[(i + 1)]) and utils["sym?"](tbl[i])) then + tbl[i] = tostring(tbl[(i + 1)]) + else + end + val[tbl[i]] = tbl[(i + 1)] + table.insert(keys, tbl[i]) + end + tbl.comments = comments + tbl.keys = keys + return dispatch(val) + end + local function close_table(b) + local top = table.remove(stack) + if (top == nil) then + parse_error(("unexpected closing delimiter " .. string.char(b))) + else + end + if (top.closer and (top.closer ~= b)) then + parse_error(("mismatched closing delimiter " .. string.char(b) .. ", expected " .. string.char(top.closer))) + else + end + top.byteend = byteindex + if (b == 41) then + return close_list(top) + elseif (b == 93) then + return close_sequence(top) + else + return close_curly_table(top) + end + end + local function parse_string_loop(chars, b, state) + table.insert(chars, b) + local state0 + do + local _185_ = {state, b} + if ((_G.type(_185_) == "table") and ((_185_)[1] == "base") and ((_185_)[2] == 92)) then + state0 = "backslash" + elseif ((_G.type(_185_) == "table") and ((_185_)[1] == "base") and ((_185_)[2] == 34)) then + state0 = "done" + elseif ((_G.type(_185_) == "table") and ((_185_)[1] == "backslash") and ((_185_)[2] == 10)) then + table.remove(chars, (#chars - 1)) + state0 = "base" + elseif true then + local _ = _185_ + state0 = "base" + else + state0 = nil + end + end + if (b and (state0 ~= "done")) then + return parse_string_loop(chars, getb(), state0) + else + return b + end + end + local function escape_char(c) + return ({[7] = "\\a", [8] = "\\b", [9] = "\\t", [10] = "\\n", [11] = "\\v", [12] = "\\f", [13] = "\\r"})[c:byte()] + end + local function parse_string() + table.insert(stack, {closer = 34}) + local chars = {34} + if not parse_string_loop(chars, getb(), "base") then + badend() + else + end + table.remove(stack) + local raw = string.char(unpack(chars)) + local formatted = raw:gsub("[\7-\13]", escape_char) + local _189_ = (rawget(_G, "loadstring") or load)(("return " .. formatted)) + if (nil ~= _189_) then + local load_fn = _189_ + return dispatch(load_fn()) + elseif (_189_ == nil) then + return parse_error(("Invalid string: " .. raw)) + else + return nil + end + end + local function parse_prefix(b) + table.insert(stack, {prefix = prefixes[b], filename = _3ffilename, line = line, bytestart = byteindex}) + local nextb = getb() + if (whitespace_3f(nextb) or (true == delims[nextb])) then + if (b ~= 35) then + parse_error("invalid whitespace after quoting prefix") + else + end + table.remove(stack) + dispatch(utils.sym("#")) + else + end + return ungetb(nextb) + end + local function parse_sym_loop(chars, b) + if (b and sym_char_3f(b)) then + table.insert(chars, b) + return parse_sym_loop(chars, getb()) + else + if b then + ungetb(b) + else + end + return chars + end + end + local function parse_number(rawstr) + local number_with_stripped_underscores = (not rawstr:find("^_") and rawstr:gsub("_", "")) + if rawstr:match("^%d") then + dispatch((tonumber(number_with_stripped_underscores) or parse_error(("could not read number \"" .. rawstr .. "\"")))) + return true + else + local _195_ = tonumber(number_with_stripped_underscores) + if (nil ~= _195_) then + local x = _195_ + dispatch(x) + return true + elseif true then + local _ = _195_ + return false + else + return nil + end + end + end + local function check_malformed_sym(rawstr) + if (rawstr:match("^~") and (rawstr ~= "~=")) then + return parse_error("illegal character: ~") + elseif rawstr:match("%.[0-9]") then + return parse_error(("can't start multisym segment with a digit: " .. rawstr), (((byteindex - #rawstr) + rawstr:find("%.[0-9]")) + 1)) + elseif (rawstr:match("[%.:][%.:]") and (rawstr ~= "..") and (rawstr ~= "$...")) then + return parse_error(("malformed multisym: " .. rawstr), ((byteindex - #rawstr) + 1 + rawstr:find("[%.:][%.:]"))) + elseif ((rawstr ~= ":") and rawstr:match(":$")) then + return parse_error(("malformed multisym: " .. rawstr), ((byteindex - #rawstr) + 1 + rawstr:find(":$"))) + elseif rawstr:match(":.+[%.:]") then + return parse_error(("method must be last component of multisym: " .. rawstr), ((byteindex - #rawstr) + rawstr:find(":.+[%.:]"))) + else + return rawstr + end + end + local function parse_sym(b) + local bytestart = byteindex + local rawstr = string.char(unpack(parse_sym_loop({b}, getb()))) + if (rawstr == "true") then + return dispatch(true) + elseif (rawstr == "false") then + return dispatch(false) + elseif (rawstr == "...") then + return dispatch(utils.varg()) + elseif rawstr:match("^:.+$") then + return dispatch(rawstr:sub(2)) + elseif not parse_number(rawstr) then + return dispatch(utils.sym(check_malformed_sym(rawstr), {byteend = byteindex, bytestart = bytestart, filename = _3ffilename, line = line})) + else + return nil + end + end + local function parse_loop(b) + if not b then + elseif (b == 59) then + parse_comment(getb(), {";"}) + elseif (type(delims[b]) == "number") then + open_table(b) + elseif delims[b] then + close_table(b) + elseif (b == 34) then + parse_string(b) + elseif prefixes[b] then + parse_prefix(b) + elseif (sym_char_3f(b) or (b == string.byte("~"))) then + parse_sym(b) + elseif not utils.hook("illegal-char", b, getb, ungetb, dispatch) then + parse_error(("illegal character: " .. string.char(b))) + else + end + if not b then + return nil + elseif done_3f then + return true, retval + else + return parse_loop(skip_whitespace(getb())) + end + end + return parse_loop(skip_whitespace(getb())) + end + local function _202_() + stack, line, byteindex, lastb = {}, 1, 0, nil + return nil + end + return parse_stream, _202_ + end + return {granulate = granulate, parser = parser, ["string-stream"] = string_stream, ["sym-char?"] = sym_char_3f} +end +local utils +package.preload["fennel.view"] = package.preload["fennel.view"] or function(...) + local type_order = {number = 1, boolean = 2, string = 3, table = 4, ["function"] = 5, userdata = 6, thread = 7} + local lua_pairs = pairs + local lua_ipairs = ipairs + local function pairs(t) + local _1_ = getmetatable(t) + if ((_G.type(_1_) == "table") and (nil ~= (_1_).__pairs)) then + local p = (_1_).__pairs + return p(t) + elseif true then + local _ = _1_ + return lua_pairs(t) + else + return nil + end + end + local function ipairs(t) + local _3_ = getmetatable(t) + if ((_G.type(_3_) == "table") and (nil ~= (_3_).__ipairs)) then + local i = (_3_).__ipairs + return i(t) + elseif true then + local _ = _3_ + return lua_ipairs(t) + else + return nil + end + end + local function length_2a(t) + local _5_ = getmetatable(t) + if ((_G.type(_5_) == "table") and (nil ~= (_5_).__len)) then + local l = (_5_).__len + return l(t) + elseif true then + local _ = _5_ + return #t + else + return nil + end + end + local function sort_keys(_7_, _9_) + local _arg_8_ = _7_ + local a = _arg_8_[1] + local _arg_10_ = _9_ + local b = _arg_10_[1] + local ta = type(a) + local tb = type(b) + if ((ta == tb) and ((ta == "string") or (ta == "number"))) then + return (a < b) + else + local dta = type_order[ta] + local dtb = type_order[tb] + if (dta and dtb) then + return (dta < dtb) + elseif dta then + return true + elseif dtb then + return false + else + return (ta < tb) + end + end + end + local function max_index_gap(kv) + local gap = 0 + if (length_2a(kv) > 0) then + local i = 0 + for _, _13_ in ipairs(kv) do + local _each_14_ = _13_ + local k = _each_14_[1] + if ((k - i) > gap) then + gap = (k - i) + else + end + i = k + end + else + end + return gap + end + local function fill_gaps(kv) + local missing_indexes = {} + local i = 0 + for _, _17_ in ipairs(kv) do + local _each_18_ = _17_ + local j = _each_18_[1] + i = (i + 1) + while (i < j) do + table.insert(missing_indexes, i) + i = (i + 1) + end + end + for _, k in ipairs(missing_indexes) do + table.insert(kv, k, {k}) + end + return nil + end + local function table_kv_pairs(t, options) + local assoc_3f = false + local kv = {} + local insert = table.insert + for k, v in pairs(t) do + if ((type(k) ~= "number") or (k < 1)) then + assoc_3f = true + else + end + insert(kv, {k, v}) + end + table.sort(kv, sort_keys) + if not assoc_3f then + if (max_index_gap(kv) > options["max-sparse-gap"]) then + assoc_3f = true + else + fill_gaps(kv) + end + else + end + if (length_2a(kv) == 0) then + return kv, "empty" + else + local function _22_() + if assoc_3f then + return "table" + else + return "seq" + end + end + return kv, _22_() + end + end + local function count_table_appearances(t, appearances) + if (type(t) == "table") then + if not appearances[t] then + appearances[t] = 1 + for k, v in pairs(t) do + count_table_appearances(k, appearances) + count_table_appearances(v, appearances) + end + else + appearances[t] = ((appearances[t] or 0) + 1) + end + else + end + return appearances + end + local function save_table(t, seen) + local seen0 = (seen or {len = 0}) + local id = (seen0.len + 1) + if not (seen0)[t] then + seen0[t] = id + seen0.len = id + else + end + return seen0 + end + local function detect_cycle(t, seen, _3fk) + if ("table" == type(t)) then + seen[t] = true + local _27_, _28_ = next(t, _3fk) + if ((nil ~= _27_) and (nil ~= _28_)) then + local k = _27_ + local v = _28_ + return (seen[k] or detect_cycle(k, seen) or seen[v] or detect_cycle(v, seen) or detect_cycle(t, seen, k)) + else + return nil + end + else + return nil + end + end + local function visible_cycle_3f(t, options) + return (options["detect-cycles?"] and detect_cycle(t, {}) and save_table(t, options.seen) and (1 < (options.appearances[t] or 0))) + end + local function table_indent(indent, id) + local opener_length + if id then + opener_length = (length_2a(tostring(id)) + 2) + else + opener_length = 1 + end + return (indent + opener_length) + end + local pp = nil + local function concat_table_lines(elements, options, multiline_3f, indent, table_type, prefix) + local indent_str = ("\n" .. string.rep(" ", indent)) + local open + local function _32_() + if ("seq" == table_type) then + return "[" + else + return "{" + end + end + open = ((prefix or "") .. _32_()) + local close + if ("seq" == table_type) then + close = "]" + else + close = "}" + end + local oneline = (open .. table.concat(elements, " ") .. close) + if (not options["one-line?"] and (multiline_3f or ((indent + length_2a(oneline)) > options["line-length"]))) then + return (open .. table.concat(elements, indent_str) .. close) + else + return oneline + end + end + local function utf8_len(x) + local n = 0 + for _ in string.gmatch(x, "[%z\1-\127\192-\247]") do + n = (n + 1) + end + return n + end + local function pp_associative(t, kv, options, indent) + local multiline_3f = false + local id = options.seen[t] + if (options.level >= options.depth) then + return "{...}" + elseif (id and options["detect-cycles?"]) then + return ("@" .. id .. "{...}") + else + local visible_cycle_3f0 = visible_cycle_3f(t, options) + local id0 = (visible_cycle_3f0 and options.seen[t]) + local indent0 = table_indent(indent, id0) + local slength + if options["utf8?"] then + slength = utf8_len + else + local function _35_(_241) + return #_241 + end + slength = _35_ + end + local prefix + if visible_cycle_3f0 then + prefix = ("@" .. id0) + else + prefix = "" + end + local items + do + local tbl_14_auto = {} + local i_15_auto = #tbl_14_auto + for _, _38_ in pairs(kv) do + local _each_39_ = _38_ + local k = _each_39_[1] + local v = _each_39_[2] + local val_16_auto + do + local k0 = pp(k, options, (indent0 + 1), true) + local v0 = pp(v, options, (indent0 + slength(k0) + 1)) + multiline_3f = (multiline_3f or k0:find("\n") or v0:find("\n")) + val_16_auto = (k0 .. " " .. v0) + end + if (nil ~= val_16_auto) then + i_15_auto = (i_15_auto + 1) + do end (tbl_14_auto)[i_15_auto] = val_16_auto + else + end + end + items = tbl_14_auto + end + return concat_table_lines(items, options, multiline_3f, indent0, "table", prefix) + end + end + local function pp_sequence(t, kv, options, indent) + local multiline_3f = false + local id = options.seen[t] + if (options.level >= options.depth) then + return "[...]" + elseif (id and options["detect-cycles?"]) then + return ("@" .. id .. "[...]") + else + local visible_cycle_3f0 = visible_cycle_3f(t, options) + local id0 = (visible_cycle_3f0 and options.seen[t]) + local indent0 = table_indent(indent, id0) + local prefix + if visible_cycle_3f0 then + prefix = ("@" .. id0) + else + prefix = "" + end + local items + do + local tbl_14_auto = {} + local i_15_auto = #tbl_14_auto + for _, _43_ in pairs(kv) do + local _each_44_ = _43_ + local _0 = _each_44_[1] + local v = _each_44_[2] + local val_16_auto + do + local v0 = pp(v, options, indent0) + multiline_3f = (multiline_3f or v0:find("\n")) + val_16_auto = v0 + end + if (nil ~= val_16_auto) then + i_15_auto = (i_15_auto + 1) + do end (tbl_14_auto)[i_15_auto] = val_16_auto + else + end + end + items = tbl_14_auto + end + return concat_table_lines(items, options, multiline_3f, indent0, "seq", prefix) + end + end + local function concat_lines(lines, options, indent, force_multi_line_3f) + if (length_2a(lines) == 0) then + if options["empty-as-sequence?"] then + return "[]" + else + return "{}" + end + else + local oneline + local _48_ + do + local tbl_14_auto = {} + local i_15_auto = #tbl_14_auto + for _, line in ipairs(lines) do + local val_16_auto = line:gsub("^%s+", "") + if (nil ~= val_16_auto) then + i_15_auto = (i_15_auto + 1) + do end (tbl_14_auto)[i_15_auto] = val_16_auto + else + end + end + _48_ = tbl_14_auto + end + oneline = table.concat(_48_, " ") + if (not options["one-line?"] and (force_multi_line_3f or oneline:find("\n") or ((indent + length_2a(oneline)) > options["line-length"]))) then + return table.concat(lines, ("\n" .. string.rep(" ", indent))) + else + return oneline + end + end + end + local function pp_metamethod(t, metamethod, options, indent) + if (options.level >= options.depth) then + if options["empty-as-sequence?"] then + return "[...]" + else + return "{...}" + end + else + local _ + local function _53_(_241) + return visible_cycle_3f(_241, options) + end + options["visible-cycle?"] = _53_ + _ = nil + local lines, force_multi_line_3f = metamethod(t, pp, options, indent) + options["visible-cycle?"] = nil + local _54_ = type(lines) + if (_54_ == "string") then + return lines + elseif (_54_ == "table") then + return concat_lines(lines, options, indent, force_multi_line_3f) + elseif true then + local _0 = _54_ + return error("__fennelview metamethod must return a table of lines") + else + return nil + end + end + end + local function pp_table(x, options, indent) + options.level = (options.level + 1) + local x0 + do + local _57_ + if options["metamethod?"] then + local _58_ = x + if (nil ~= _58_) then + local _59_ = getmetatable(_58_) + if (nil ~= _59_) then + _57_ = (_59_).__fennelview + else + _57_ = _59_ + end + else + _57_ = _58_ + end + else + _57_ = nil + end + if (nil ~= _57_) then + local metamethod = _57_ + x0 = pp_metamethod(x, metamethod, options, indent) + elseif true then + local _ = _57_ + local _63_, _64_ = table_kv_pairs(x, options) + if (true and (_64_ == "empty")) then + local _0 = _63_ + if options["empty-as-sequence?"] then + x0 = "[]" + else + x0 = "{}" + end + elseif ((nil ~= _63_) and (_64_ == "table")) then + local kv = _63_ + x0 = pp_associative(x, kv, options, indent) + elseif ((nil ~= _63_) and (_64_ == "seq")) then + local kv = _63_ + x0 = pp_sequence(x, kv, options, indent) + else + x0 = nil + end + else + x0 = nil + end + end + options.level = (options.level - 1) + return x0 + end + local function number__3estring(n) + local _68_ = string.gsub(tostring(n), ",", ".") + return _68_ + end + local function colon_string_3f(s) + return s:find("^[-%w?^_!$%&*+./@|<=>]+$") + end + local utf8_inits = {{["min-byte"] = 0, ["max-byte"] = 127, ["min-code"] = 0, ["max-code"] = 127, len = 1}, {["min-byte"] = 192, ["max-byte"] = 223, ["min-code"] = 128, ["max-code"] = 2047, len = 2}, {["min-byte"] = 224, ["max-byte"] = 239, ["min-code"] = 2048, ["max-code"] = 65535, len = 3}, {["min-byte"] = 240, ["max-byte"] = 247, ["min-code"] = 65536, ["max-code"] = 1114111, len = 4}} + local function utf8_escape(str) + local function validate_utf8(str0, index) + local inits = utf8_inits + local byte = string.byte(str0, index) + local init + do + local ret = nil + for _, init0 in ipairs(inits) do + if ret then break end + ret = (byte and (function(_69_,_70_,_71_) return (_69_ >= _70_) and (_70_ >= _71_) end)(init0["max-byte"],byte,init0["min-byte"]) and init0) + end + init = ret + end + local code + local function _72_() + local code0 + if init then + code0 = (byte - init["min-byte"]) + else + code0 = nil + end + for i = (index + 1), (index + init.len + -1) do + local byte0 = string.byte(str0, i) + code0 = (byte0 and code0 and (function(_74_,_75_,_76_) return (_74_ >= _75_) and (_75_ >= _76_) end)(191,byte0,128) and ((code0 * 64) + (byte0 - 128))) + end + return code0 + end + code = (init and _72_()) + if (code and (function(_77_,_78_,_79_) return (_77_ >= _78_) and (_78_ >= _79_) end)(init["max-code"],code,init["min-code"]) and not (function(_80_,_81_,_82_) return (_80_ >= _81_) and (_81_ >= _82_) end)(57343,code,55296)) then + return init.len + else + return nil + end + end + local index = 1 + local output = {} + while (index <= #str) do + local nexti = (string.find(str, "[\128-\255]", index) or (#str + 1)) + local len = validate_utf8(str, nexti) + table.insert(output, string.sub(str, index, (nexti + (len or 0) + -1))) + if (not len and (nexti <= #str)) then + table.insert(output, string.format("\\%03d", string.byte(str, nexti))) + else + end + if len then + index = (nexti + len) + else + index = (nexti + 1) + end + end + return table.concat(output) + end + local function pp_string(str, options, indent) + local escs + local _86_ + if (options["escape-newlines?"] and (length_2a(str) < (options["line-length"] - indent))) then + _86_ = "\\n" + else + _86_ = "\n" + end + local function _88_(_241, _242) + return ("\\%03d"):format(_242:byte()) + end + escs = setmetatable({["\7"] = "\\a", ["\8"] = "\\b", ["\12"] = "\\f", ["\11"] = "\\v", ["\13"] = "\\r", ["\9"] = "\\t", ["\\"] = "\\\\", ["\""] = "\\\"", ["\n"] = _86_}, {__index = _88_}) + local str0 = ("\"" .. str:gsub("[%c\\\"]", escs) .. "\"") + if options["utf8?"] then + return utf8_escape(str0) + else + return str0 + end + end + local function make_options(t, options) + local defaults = {["line-length"] = 80, ["one-line?"] = false, depth = 128, ["detect-cycles?"] = true, ["empty-as-sequence?"] = false, ["metamethod?"] = true, ["prefer-colon?"] = false, ["escape-newlines?"] = false, ["utf8?"] = true, ["max-sparse-gap"] = 10} + local overrides = {level = 0, appearances = count_table_appearances(t, {}), seen = {len = 0}} + for k, v in pairs((options or {})) do + defaults[k] = v + end + for k, v in pairs(overrides) do + defaults[k] = v + end + return defaults + end + local function _90_(x, options, indent, colon_3f) + local indent0 = (indent or 0) + local options0 = (options or make_options(x)) + local x0 + if options0.preprocess then + x0 = options0.preprocess(x, options0) + else + x0 = x + end + local tv = type(x0) + local function _93_() + local _92_ = getmetatable(x0) + if (nil ~= _92_) then + return (_92_).__fennelview + else + return _92_ + end + end + if ((tv == "table") or ((tv == "userdata") and _93_())) then + return pp_table(x0, options0, indent0) + elseif (tv == "number") then + return number__3estring(x0) + else + local function _95_() + if (colon_3f ~= nil) then + return colon_3f + elseif ("function" == type(options0["prefer-colon?"])) then + return options0["prefer-colon?"](x0) + else + return options0["prefer-colon?"] + end + end + if ((tv == "string") and colon_string_3f(x0) and _95_()) then + return (":" .. x0) + elseif (tv == "string") then + return pp_string(x0, options0, indent0) + elseif ((tv == "boolean") or (tv == "nil")) then + return tostring(x0) + else + return ("#<" .. tostring(x0) .. ">") + end + end + end + pp = _90_ + local function view(x, _3foptions) + return pp(x, make_options(x, _3foptions), 0) + end + return view +end +package.preload["fennel.utils"] = package.preload["fennel.utils"] or function(...) + local view = require("fennel.view") + local version = "1.0.0" + local function warn(message) + if (_G.io and _G.io.stderr) then + return (_G.io.stderr):write(("--WARNING: %s\n"):format(tostring(message))) + else + return nil + end + end + local function stablepairs(t) + local keys = {} + local used_keys = {} + local succ = {} + if (getmetatable(t) and getmetatable(t).keys) then + for _, k in ipairs(getmetatable(t).keys) do + if used_keys[k] then + for i = #keys, 1, -1 do + if (keys[i] == k) then + table.remove(keys, i) + else + end + end + else + end + used_keys[k] = true + table.insert(keys, k) + end + else + for k in pairs(t) do + table.insert(keys, k) + end + local function _100_(_241, _242) + return (tostring(_241) < tostring(_242)) + end + table.sort(keys, _100_) + end + for i, k in ipairs(keys) do + succ[k] = keys[(i + 1)] + end + local function stablenext(tbl, idx) + local key + if (idx == nil) then + key = keys[1] + else + key = succ[idx] + end + local value + if (key == nil) then + value = nil + else + value = tbl[key] + end + return key, value + end + return stablenext, t, nil + end + local function map(t, f, _3fout) + local out = (_3fout or {}) + local f0 + if (type(f) == "function") then + f0 = f + else + local function _104_(_241) + return (_241)[f] + end + f0 = _104_ + end + for _, x in ipairs(t) do + local _106_ = f0(x) + if (nil ~= _106_) then + local v = _106_ + table.insert(out, v) + else + end + end + return out + end + local function kvmap(t, f, _3fout) + local out = (_3fout or {}) + local f0 + if (type(f) == "function") then + f0 = f + else + local function _108_(_241) + return (_241)[f] + end + f0 = _108_ + end + for k, x in stablepairs(t) do + local _110_, _111_ = f0(k, x) + if ((nil ~= _110_) and (nil ~= _111_)) then + local key = _110_ + local value = _111_ + out[key] = value + elseif (nil ~= _110_) then + local value = _110_ + table.insert(out, value) + else + end + end + return out + end + local function copy(from, _3fto) + local to = (_3fto or {}) + for k, v in pairs((from or {})) do + to[k] = v + end + return to + end + local function member_3f(x, tbl, _3fn) + local _113_ = tbl[(_3fn or 1)] + if (_113_ == x) then + return true + elseif (_113_ == nil) then + return nil + elseif true then + local _ = _113_ + return member_3f(x, tbl, ((_3fn or 1) + 1)) + else + return nil + end + end + local function allpairs(tbl) + assert((type(tbl) == "table"), "allpairs expects a table") + local t = tbl + local seen = {} + local function allpairs_next(_, state) + local next_state, value = next(t, state) + if seen[next_state] then + return allpairs_next(nil, next_state) + elseif next_state then + seen[next_state] = true + return next_state, value + else + local _115_ = getmetatable(t) + if ((_G.type(_115_) == "table") and true) then + local __index = (_115_).__index + if ("table" == type(__index)) then + t = __index + return allpairs_next(t) + else + return nil + end + else + return nil + end + end + end + return allpairs_next + end + local function deref(self) + return self[1] + end + local nil_sym = nil + local function list__3estring(self, _3ftostring2) + local safe, max = {}, 0 + for k in pairs(self) do + if ((type(k) == "number") and (k > max)) then + max = k + else + end + end + for i = 1, max do + safe[i] = (((self[i] == nil) and nil_sym) or self[i]) + end + return ("(" .. table.concat(map(safe, (_3ftostring2 or view)), " ", 1, max) .. ")") + end + local function comment_view(c) + return c, true + end + local function sym_3d(a, b) + return ((deref(a) == deref(b)) and (getmetatable(a) == getmetatable(b))) + end + local function sym_3c(a, b) + return (a[1] < tostring(b)) + end + local symbol_mt = {__fennelview = deref, __tostring = deref, __eq = sym_3d, __lt = sym_3c, "SYMBOL"} + local expr_mt + local function _120_(x) + return tostring(deref(x)) + end + expr_mt = {__tostring = _120_, "EXPR"} + local list_mt = {__fennelview = list__3estring, __tostring = list__3estring, "LIST"} + local comment_mt = {__fennelview = comment_view, __tostring = deref, __eq = sym_3d, __lt = sym_3c, "COMMENT"} + local sequence_marker = {"SEQUENCE"} + local vararg = setmetatable({"..."}, {__fennelview = deref, __tostring = deref, "VARARG"}) + local getenv + local function _121_() + return nil + end + getenv = ((os and os.getenv) or _121_) + local function debug_on_3f(flag) + local level = (getenv("FENNEL_DEBUG") or "") + return ((level == "all") or level:find(flag)) + end + local function list(...) + return setmetatable({...}, list_mt) + end + local function sym(str, _3fsource, _3fscope) + local s = {["?scope"] = _3fscope, str} + for k, v in pairs((_3fsource or {})) do + if (type(k) == "string") then + s[k] = v + else + end + end + return setmetatable(s, symbol_mt) + end + nil_sym = sym("nil") + local function sequence(...) + return setmetatable({...}, {sequence = sequence_marker}) + end + local function expr(strcode, etype) + return setmetatable({type = etype, strcode}, expr_mt) + end + local function comment_2a(contents, _3fsource) + local _let_123_ = (_3fsource or {}) + local filename = _let_123_["filename"] + local line = _let_123_["line"] + return setmetatable({filename = filename, line = line, contents}, comment_mt) + end + local function varg() + return vararg + end + local function expr_3f(x) + return ((type(x) == "table") and (getmetatable(x) == expr_mt) and x) + end + local function varg_3f(x) + return ((x == vararg) and x) + end + local function list_3f(x) + return ((type(x) == "table") and (getmetatable(x) == list_mt) and x) + end + local function sym_3f(x) + return ((type(x) == "table") and (getmetatable(x) == symbol_mt) and x) + end + local function sequence_3f(x) + local mt = ((type(x) == "table") and getmetatable(x)) + return (mt and (mt.sequence == sequence_marker) and x) + end + local function comment_3f(x) + return ((type(x) == "table") and (getmetatable(x) == comment_mt) and x) + end + local function table_3f(x) + return ((type(x) == "table") and (x ~= vararg) and (getmetatable(x) ~= list_mt) and (getmetatable(x) ~= symbol_mt) and not comment_3f(x) and x) + end + local function multi_sym_3f(str) + if sym_3f(str) then + return multi_sym_3f(tostring(str)) + elseif (type(str) ~= "string") then + return false + else + local parts = {} + for part in str:gmatch("[^%.%:]+[%.%:]?") do + local last_char = part:sub(( - 1)) + if (last_char == ":") then + parts["multi-sym-method-call"] = true + else + end + if ((last_char == ":") or (last_char == ".")) then + parts[(#parts + 1)] = part:sub(1, ( - 2)) + else + parts[(#parts + 1)] = part + end + end + return ((#parts > 0) and (str:match("%.") or str:match(":")) and not str:match("%.%.") and (str:byte() ~= string.byte(".")) and (str:byte(( - 1)) ~= string.byte(".")) and parts) + end + end + local function quoted_3f(symbol) + return symbol.quoted + end + local function ast_source(ast) + if table_3f(ast) then + return (getmetatable(ast) or {}) + elseif ("table" == type(ast)) then + return ast + else + return {} + end + end + local function walk_tree(root, f, _3fcustom_iterator) + local function walk(iterfn, parent, idx, node) + if f(idx, node, parent) then + for k, v in iterfn(node) do + walk(iterfn, node, k, v) + end + return nil + else + return nil + end + end + walk((_3fcustom_iterator or pairs), nil, nil, root) + return root + end + local lua_keywords = {"and", "break", "do", "else", "elseif", "end", "false", "for", "function", "if", "in", "local", "nil", "not", "or", "repeat", "return", "then", "true", "until", "while", "goto"} + for i, v in ipairs(lua_keywords) do + lua_keywords[v] = i + end + local function valid_lua_identifier_3f(str) + return (str:match("^[%a_][%w_]*$") and not lua_keywords[str]) + end + local propagated_options = {"allowedGlobals", "indent", "correlate", "useMetadata", "env", "compiler-env", "compilerEnv"} + local function propagate_options(options, subopts) + for _, name in ipairs(propagated_options) do + subopts[name] = options[name] + end + return subopts + end + local root + local function _129_() + end + root = {chunk = nil, scope = nil, options = nil, reset = _129_} + root["set-reset"] = function(_130_) + local _arg_131_ = _130_ + local chunk = _arg_131_["chunk"] + local scope = _arg_131_["scope"] + local options = _arg_131_["options"] + local reset = _arg_131_["reset"] + root.reset = function() + root.chunk, root.scope, root.options, root.reset = chunk, scope, options, reset + return nil + end + return root.reset + end + local warned = {} + local function check_plugin_version(_132_) + local _arg_133_ = _132_ + local name = _arg_133_["name"] + local versions = _arg_133_["versions"] + local plugin = _arg_133_ + if (not member_3f(version:gsub("-dev", ""), (versions or {})) and not warned[plugin]) then + warned[plugin] = true + return warn(string.format("plugin %s does not support Fennel version %s", (name or "unknown"), version)) + else + return nil + end + end + local function hook(event, ...) + local result = nil + if (root.options and root.options.plugins) then + for _, plugin in ipairs(root.options.plugins) do + if result then break end + check_plugin_version(plugin) + local _135_ = plugin[event] + if (nil ~= _135_) then + local f = _135_ + result = f(...) + else + end + end + else + end + return result + end + return {warn = warn, allpairs = allpairs, stablepairs = stablepairs, copy = copy, kvmap = kvmap, map = map, ["walk-tree"] = walk_tree, ["member?"] = member_3f, list = list, sequence = sequence, sym = sym, varg = varg, expr = expr, comment = comment_2a, ["comment?"] = comment_3f, ["expr?"] = expr_3f, ["list?"] = list_3f, ["multi-sym?"] = multi_sym_3f, ["sequence?"] = sequence_3f, ["sym?"] = sym_3f, ["table?"] = table_3f, ["varg?"] = varg_3f, ["quoted?"] = quoted_3f, ["valid-lua-identifier?"] = valid_lua_identifier_3f, ["lua-keywords"] = lua_keywords, hook = hook, ["propagate-options"] = propagate_options, root = root, ["debug-on?"] = debug_on_3f, ["ast-source"] = ast_source, version = version, path = table.concat({"./?.fnl", "./?/init.fnl", getenv("FENNEL_PATH")}, ";"), ["macro-path"] = table.concat({"./?.fnl", "./?/init-macros.fnl", "./?/init.fnl", getenv("FENNEL_MACRO_PATH")}, ";")} +end +utils = require("fennel.utils") +local parser = require("fennel.parser") +local compiler = require("fennel.compiler") +local specials = require("fennel.specials") +local repl = require("fennel.repl") +local view = require("fennel.view") +local function eval_env(env, opts) + if (env == "_COMPILER") then + local env0 = specials["make-compiler-env"](nil, compiler.scopes.compiler, {}, opts) + if (opts.allowedGlobals == nil) then + opts.allowedGlobals = specials["current-global-names"](env0) + else + end + return specials["wrap-env"](env0) + else + return (env and specials["wrap-env"](env)) + end +end +local function eval_opts(options, str) + local opts = utils.copy(options) + if (opts.allowedGlobals == nil) then + opts.allowedGlobals = specials["current-global-names"](opts.env) + else + end + if (not opts.filename and not opts.source) then + opts.source = str + else + end + if (opts.env == "_COMPILER") then + opts.scope = compiler["make-scope"](compiler.scopes.compiler) + else + end + return opts +end +local function eval(str, options, ...) + local opts = eval_opts(options, str) + local env = eval_env(opts.env, opts) + local lua_source = compiler["compile-string"](str, opts) + local loader + local function _616_(...) + if opts.filename then + return ("@" .. opts.filename) + else + return str + end + end + loader = specials["load-code"](lua_source, env, _616_(...)) + opts.filename = nil + return loader(...) +end +local function dofile_2a(filename, options, ...) + local opts = utils.copy(options) + local f = assert(io.open(filename, "rb")) + local source = assert(f:read("*all"), ("Could not read " .. filename)) + f:close() + opts.filename = filename + return eval(source, opts, ...) +end +local function syntax() + local body_3f = {"when", "with-open", "collect", "icollect", "lambda", "\206\187", "macro", "match", "accumulate"} + local binding_3f = {"collect", "icollect", "each", "for", "let", "with-open", "accumulate"} + local define_3f = {"fn", "lambda", "\206\187", "var", "local", "macro", "macros", "global"} + local out = {} + for k, v in pairs(compiler.scopes.global.specials) do + local metadata = (compiler.metadata[v] or {}) + do end (out)[k] = {["special?"] = true, ["body-form?"] = metadata["fnl/body-form?"], ["binding-form?"] = utils["member?"](k, binding_3f), ["define?"] = utils["member?"](k, define_3f)} + end + for k, v in pairs(compiler.scopes.global.macros) do + out[k] = {["macro?"] = true, ["body-form?"] = utils["member?"](k, body_3f), ["binding-form?"] = utils["member?"](k, binding_3f), ["define?"] = utils["member?"](k, define_3f)} + end + for k, v in pairs(_G) do + local _617_ = type(v) + if (_617_ == "function") then + out[k] = {["global?"] = true, ["function?"] = true} + elseif (_617_ == "table") then + for k2, v2 in pairs(v) do + if (("function" == type(v2)) and (k ~= "_G")) then + out[(k .. "." .. k2)] = {["function?"] = true, ["global?"] = true} + else + end + end + out[k] = {["global?"] = true} + else + end + end + return out +end +local mod = {list = utils.list, ["list?"] = utils["list?"], sym = utils.sym, ["sym?"] = utils["sym?"], sequence = utils.sequence, ["sequence?"] = utils["sequence?"], comment = utils.comment, ["comment?"] = utils["comment?"], varg = utils.varg, path = utils.path, ["macro-path"] = utils["macro-path"], ["sym-char?"] = parser["sym-char?"], parser = parser.parser, granulate = parser.granulate, ["string-stream"] = parser["string-stream"], compile = compiler.compile, ["compile-string"] = compiler["compile-string"], ["compile-stream"] = compiler["compile-stream"], compile1 = compiler.compile1, traceback = compiler.traceback, mangle = compiler["global-mangling"], unmangle = compiler["global-unmangling"], metadata = compiler.metadata, scope = compiler["make-scope"], gensym = compiler.gensym, ["load-code"] = specials["load-code"], ["macro-loaded"] = specials["macro-loaded"], ["macro-searchers"] = specials["macro-searchers"], ["search-module"] = specials["search-module"], ["make-searcher"] = specials["make-searcher"], makeSearcher = specials["make-searcher"], searcher = specials["make-searcher"](), doc = specials.doc, view = view, eval = eval, dofile = dofile_2a, version = utils.version, repl = repl, syntax = syntax, loadCode = specials["load-code"], make_searcher = specials["make-searcher"], searchModule = specials["search-module"], macroLoaded = specials["macro-loaded"], compileStream = compiler["compile-stream"], compileString = compiler["compile-string"], stringStream = parser["string-stream"]} +utils["fennel-module"] = mod +do + local builtin_macros = [===[;; This module contains all the built-in Fennel macros. Unlike all the other + ;; modules that are loaded by the old bootstrap compiler, this runs in the + ;; compiler scope of the version of the compiler being defined. + + ;; The code for these macros is somewhat idiosyncratic because it cannot use any + ;; macros which have not yet been defined. + + ;; TODO: some of these macros modify their arguments; we should stop doing that, + ;; but in a way that preserves file/line metadata. + + (fn ->* [val ...] + "Thread-first macro. + Take the first value and splice it into the second form as its first argument. + The value of the second form is spliced into the first arg of the third, etc." + (var x val) + (each [_ e (ipairs [...])] + (let [elt (if (list? e) e (list e))] + (table.insert elt 2 x) + (set x elt))) + x) + + (fn ->>* [val ...] + "Thread-last macro. + Same as ->, except splices the value into the last position of each form + rather than the first." + (var x val) + (each [_ e (ipairs [...])] + (let [elt (if (list? e) e (list e))] + (table.insert elt x) + (set x elt))) + x) + + (fn -?>* [val ...] + "Nil-safe thread-first macro. + Same as -> except will short-circuit with nil when it encounters a nil value." + (if (= 0 (select "#" ...)) + val + (let [els [...] + e (table.remove els 1) + el (if (list? e) e (list e)) + tmp (gensym)] + (table.insert el 2 tmp) + `(let [,tmp ,val] + (if (not= nil ,tmp) + (-?> ,el ,(unpack els)) + ,tmp))))) + + (fn -?>>* [val ...] + "Nil-safe thread-last macro. + Same as ->> except will short-circuit with nil when it encounters a nil value." + (if (= 0 (select "#" ...)) + val + (let [els [...] + e (table.remove els 1) + el (if (list? e) e (list e)) + tmp (gensym)] + (table.insert el tmp) + `(let [,tmp ,val] + (if (not= ,tmp nil) + (-?>> ,el ,(unpack els)) + ,tmp))))) + + (fn ?dot [tbl ...] + "Nil-safe table look up. + Same as . (dot), except will short-circuit with nil when it encounters + a nil value in any of subsequent keys." + (let [head (gensym :t) + lookups `(do (var ,head ,tbl) ,head)] + (each [_ k (ipairs [...])] + ;; Kinda gnarly to reassign in place like this, but it emits the best lua. + ;; With this impl, it emits a flat, concise, and readable set of if blocks. + (table.insert lookups (# lookups) `(if (not= nil ,head) + (set ,head (. ,head ,k))))) + lookups)) + + (fn doto* [val ...] + "Evaluates val and splices it into the first argument of subsequent forms." + (let [name (gensym) + form `(let [,name ,val])] + (each [_ elt (ipairs [...])] + (let [elt (if (list? elt) elt (list elt))] + (table.insert elt 2 name) + (table.insert form elt))) + (table.insert form name) + form)) + + (fn when* [condition body1 ...] + "Evaluate body for side-effects only when condition is truthy." + (assert body1 "expected body") + `(if ,condition + (do + ,body1 + ,...))) + + (fn with-open* [closable-bindings ...] + "Like `let`, but invokes (v:close) on each binding after evaluating the body. + The body is evaluated inside `xpcall` so that bound values will be closed upon + encountering an error before propagating it." + (let [bodyfn `(fn [] + ,...) + closer `(fn close-handlers# [ok# ...] + (if ok# ... (error ... 0))) + traceback `(. (or package.loaded.fennel debug) :traceback)] + (for [i 1 (length closable-bindings) 2] + (assert (sym? (. closable-bindings i)) + "with-open only allows symbols in bindings") + (table.insert closer 4 `(: ,(. closable-bindings i) :close))) + `(let ,closable-bindings + ,closer + (close-handlers# (_G.xpcall ,bodyfn ,traceback))))) + + (fn into-val [iter-tbl] + (var into nil) + (for [i (length iter-tbl) 2 -1] + (if (= :into (. iter-tbl i)) + (do (assert (not into) "expected only one :into clause") + (set into (table.remove iter-tbl (+ i 1))) + (table.remove iter-tbl i)))) + (assert (or (not into) + (sym? into) + (table? into) + (list? into)) + "expected table, function call, or symbol in :into clause") + (or into [])) + + (fn collect* [iter-tbl key-expr value-expr ...] + "Returns a table made by running an iterator and evaluating an expression that + returns key-value pairs to be inserted sequentially into the table. This can + be thought of as a table comprehension. The body should provide two + expressions (used as key and value) or nil, which causes it to be omitted from + the resulting table. + + For example, + (collect [k v (pairs {:apple \"red\" :orange \"orange\"})] + v k) + returns + {:red \"apple\" :orange \"orange\"} + + Supports an :into clause after the iterator to put results in an existing table. + Supports early termination with an :until clause." + (assert (and (sequence? iter-tbl) (>= (length iter-tbl) 2)) + "expected iterator binding table") + (assert (not= nil key-expr) "expected key and value expression") + (assert (= nil ...) + "expected 1 or 2 body expressions; wrap multiple expressions with do") + (let [kv-expr (if (= nil value-expr) key-expr `(values ,key-expr ,value-expr))] + `(let [tbl# ,(into-val iter-tbl)] + (each ,iter-tbl + (match ,kv-expr + (k# v#) (tset tbl# k# v#))) + tbl#))) + + (fn icollect* [iter-tbl value-expr ...] + "Returns a sequential table made by running an iterator and evaluating an + expression that returns values to be inserted sequentially into the table. + This can be thought of as a \"list comprehension\". If the body returns nil + that element is omitted from the resulting table. + + For example, + (icollect [_ v (ipairs [1 2 3 4 5])] (when (not= v 3) (* v v))) + returns + [1 4 16 25] + + Supports an :into clause after the iterator to put results in an existing table. + Supports early termination with an :until clause." + (assert (and (sequence? iter-tbl) (>= (length iter-tbl) 2)) + "expected iterator binding table") + (assert (not= nil value-expr) "expected table value expression") + (assert (= nil ...) + "expected exactly one body expression. Wrap multiple expressions with do") + `(let [tbl# ,(into-val iter-tbl)] + ;; believe it or not, using a var here has a pretty good performance boost: + ;; https://p.hagelb.org/icollect-performance.html + (var i# (length tbl#)) + (each ,iter-tbl + (let [val# ,value-expr] + (when (not= nil val#) + (set i# (+ i# 1)) + (tset tbl# i# val#)))) + tbl#)) + + (fn accumulate* [iter-tbl accum-expr ...] + "Accumulation macro. + It takes a binding table and an expression as its arguments. + In the binding table, the first symbol is bound to the second value, being an + initial accumulator variable. The rest are an iterator binding table in the + format `each` takes. + It runs through the iterator in each step of which the given expression is + evaluated, and its returned value updates the accumulator variable. + It eventually returns the final value of the accumulator variable. + + For example, + (accumulate [total 0 + _ n (pairs {:apple 2 :orange 3})] + (+ total n)) + returns + 5" + (assert (and (sequence? iter-tbl) (>= (length iter-tbl) 4)) + "expected initial value and iterator binding table") + (assert (not= nil accum-expr) "expected accumulating expression") + (assert (= nil ...) + "expected exactly one body expression. Wrap multiple expressions with do") + (let [accum-var (table.remove iter-tbl 1) + accum-init (table.remove iter-tbl 1)] + `(do (var ,accum-var ,accum-init) + (each ,iter-tbl + (set ,accum-var ,accum-expr)) + ,accum-var))) + + (fn partial* [f ...] + "Returns a function with all arguments partially applied to f." + (assert f "expected a function to partially apply") + (let [bindings [] + args []] + (each [_ arg (ipairs [...])] + (if (or (= :number (type arg)) + (= :string (type arg)) + (= :boolean (type arg)) + (= `nil arg)) + (table.insert args arg) + (let [name (gensym)] + (table.insert bindings name) + (table.insert bindings arg) + (table.insert args name)))) + (let [body (list f (unpack args))] + (table.insert body _VARARG) + `(let ,bindings + (fn [,_VARARG] + ,body))))) + + (fn pick-args* [n f] + "Creates a function of arity n that applies its arguments to f. + + For example, + (pick-args 2 func) + expands to + (fn [_0_ _1_] (func _0_ _1_))" + (if (and _G.io _G.io.stderr) + (_G.io.stderr:write + "-- WARNING: pick-args is deprecated and will be removed in the future.\n")) + (assert (and (= (type n) :number) (= n (math.floor n)) (>= n 0)) + (.. "Expected n to be an integer literal >= 0, got " (tostring n))) + (let [bindings []] + (for [i 1 n] + (tset bindings i (gensym))) + `(fn ,bindings + (,f ,(unpack bindings))))) + + (fn pick-values* [n ...] + "Like the `values` special, but emits exactly n values. + + For example, + (pick-values 2 ...) + expands to + (let [(_0_ _1_) ...] + (values _0_ _1_))" + (assert (and (= :number (type n)) (>= n 0) (= n (math.floor n))) + (.. "Expected n to be an integer >= 0, got " (tostring n))) + (let [let-syms (list) + let-values (if (= 1 (select "#" ...)) ... `(values ,...))] + (for [i 1 n] + (table.insert let-syms (gensym))) + (if (= n 0) `(values) + `(let [,let-syms ,let-values] + (values ,(unpack let-syms)))))) + + (fn lambda* [...] + "Function literal with nil-checked arguments. + Like `fn`, but will throw an exception if a declared argument is passed in as + nil, unless that argument's name begins with a question mark." + (let [args [...] + has-internal-name? (sym? (. args 1)) + arglist (if has-internal-name? (. args 2) (. args 1)) + docstring-position (if has-internal-name? 3 2) + has-docstring? (and (> (length args) docstring-position) + (= :string (type (. args docstring-position)))) + arity-check-position (- 4 (if has-internal-name? 0 1) + (if has-docstring? 0 1)) + empty-body? (< (length args) arity-check-position)] + (fn check! [a] + (if (table? a) + (each [_ a (pairs a)] + (check! a)) + (let [as (tostring a)] + (and (not (as:match "^?")) (not= as "&") (not= as "_") + (not= as "...") (not= as "&as"))) + (table.insert args arity-check-position + `(_G.assert (not= nil ,a) + ,(: "Missing argument %s on %s:%s" :format + (tostring a) + (or a.filename :unknown) + (or a.line "?")))))) + + (assert (= :table (type arglist)) "expected arg list") + (each [_ a (ipairs arglist)] + (check! a)) + (if empty-body? + (table.insert args (sym :nil))) + `(fn ,(unpack args)))) + + (fn macro* [name ...] + "Define a single macro." + (assert (sym? name) "expected symbol for macro name") + (local args [...]) + `(macros {,(tostring name) (fn ,(unpack args))})) + + (fn macrodebug* [form return?] + "Print the resulting form after performing macroexpansion. + With a second argument, returns expanded form as a string instead of printing." + (let [handle (if return? `do `print)] + `(,handle ,(view (macroexpand form _SCOPE))))) + + (fn import-macros* [binding1 module-name1 ...] + "Binds a table of macros from each macro module according to a binding form. + Each binding form can be either a symbol or a k/v destructuring table. + Example: + (import-macros mymacros :my-macros ; bind to symbol + {:macro1 alias : macro2} :proj.macros) ; import by name" + (assert (and binding1 module-name1 (= 0 (% (select "#" ...) 2))) + "expected even number of binding/modulename pairs") + (for [i 1 (select "#" binding1 module-name1 ...) 2] + ;; delegate the actual loading of the macros to the require-macros + ;; special which already knows how to set up the compiler env and stuff. + ;; this is weird because require-macros is deprecated but it works. + (let [(binding modname) (select i binding1 module-name1 ...) + scope (get-scope) + macros* (_SPECIALS.require-macros `(import-macros ,modname) + scope {} binding1)] + (if (sym? binding) + ;; bind whole table of macros to table bound to symbol + (tset scope.macros (. binding 1) macros*) + ;; 1-level table destructuring for importing individual macros + (table? binding) + (each [macro-name [import-key] (pairs binding)] + (assert (= :function (type (. macros* macro-name))) + (.. "macro " macro-name " not found in module " + (tostring modname))) + (tset scope.macros import-key (. macros* macro-name)))))) + nil) + + ;;; Pattern matching + + (fn match-values [vals pattern unifications match-pattern] + (let [condition `(and) + bindings []] + (each [i pat (ipairs pattern)] + (let [(subcondition subbindings) (match-pattern [(. vals i)] pat + unifications)] + (table.insert condition subcondition) + (each [_ b (ipairs subbindings)] + (table.insert bindings b)))) + (values condition bindings))) + + (fn match-table [val pattern unifications match-pattern] + (let [condition `(and (= (_G.type ,val) :table)) + bindings []] + (each [k pat (pairs pattern)] + (if (= pat `&) + (let [rest-pat (. pattern (+ k 1)) + rest-val `(select ,k ((or table.unpack _G.unpack) ,val)) + subcondition (match-table `(pick-values 1 ,rest-val) + rest-pat unifications match-pattern)] + (if (not (sym? rest-pat)) + (table.insert condition subcondition)) + (assert (= nil (. pattern (+ k 2))) + "expected & rest argument before last parameter") + (table.insert bindings rest-pat) + (table.insert bindings [rest-val])) + (= k `&as) + (do + (table.insert bindings pat) + (table.insert bindings val)) + (and (= :number (type k)) (= `&as pat)) + (do + (assert (= nil (. pattern (+ k 2))) + "expected &as argument before last parameter") + (table.insert bindings (. pattern (+ k 1))) + (table.insert bindings val)) + ;; don't process the pattern right after &/&as; already got it + (or (not= :number (type k)) (and (not= `&as (. pattern (- k 1))) + (not= `& (. pattern (- k 1))))) + (let [subval `(. ,val ,k) + (subcondition subbindings) (match-pattern [subval] pat + unifications)] + (table.insert condition subcondition) + (each [_ b (ipairs subbindings)] + (table.insert bindings b))))) + (values condition bindings))) + + (fn match-pattern [vals pattern unifications] + "Takes the AST of values and a single pattern and returns a condition + to determine if it matches as well as a list of bindings to + introduce for the duration of the body if it does match." + ;; we have to assume we're matching against multiple values here until we + ;; know we're either in a multi-valued clause (in which case we know the # + ;; of vals) or we're not, in which case we only care about the first one. + (let [[val] vals] + (if (or (and (sym? pattern) ; unification with outer locals (or nil) + (not= "_" (tostring pattern)) ; never unify _ + (or (in-scope? pattern) (= :nil (tostring pattern)))) + (and (multi-sym? pattern) (in-scope? (. (multi-sym? pattern) 1)))) + (values `(= ,val ,pattern) []) + ;; unify a local we've seen already + (and (sym? pattern) (. unifications (tostring pattern))) + (values `(= ,(. unifications (tostring pattern)) ,val) []) + ;; bind a fresh local + (sym? pattern) + (let [wildcard? (: (tostring pattern) :find "^_")] + (if (not wildcard?) (tset unifications (tostring pattern) val)) + (values (if (or wildcard? (string.find (tostring pattern) "^?")) true + `(not= ,(sym :nil) ,val)) [pattern val])) + ;; guard clause + (and (list? pattern) (= (. pattern 2) `?)) + (let [(pcondition bindings) (match-pattern vals (. pattern 1) + unifications) + condition `(and ,(unpack pattern 3))] + (values `(and ,pcondition + (let ,bindings + ,condition)) bindings)) + ;; multi-valued patterns (represented as lists) + (list? pattern) + (match-values vals pattern unifications match-pattern) + ;; table patterns + (= (type pattern) :table) + (match-table val pattern unifications match-pattern) + ;; literal value + (values `(= ,val ,pattern) [])))) + + (fn match-condition [vals clauses] + "Construct the actual `if` AST for the given match values and clauses." + (if (not= 0 (% (length clauses) 2)) ; treat odd final clause as default + (table.insert clauses (length clauses) (sym "_"))) + (let [out `(if)] + (for [i 1 (length clauses) 2] + (let [pattern (. clauses i) + body (. clauses (+ i 1)) + (condition bindings) (match-pattern vals pattern {})] + (table.insert out condition) + (table.insert out `(let ,bindings + ,body)))) + out)) + + (fn match-val-syms [clauses] + "How many multi-valued clauses are there? return a list of that many gensyms." + (let [syms (list (gensym))] + (for [i 1 (length clauses) 2] + (let [clause (if (and (list? (. clauses i)) (= `? (. clauses i 2))) + (. clauses i 1) + (. clauses i))] + (if (list? clause) + (each [valnum (ipairs clause)] + (if (not (. syms valnum)) + (tset syms valnum (gensym))))))) + syms)) + + (fn match* [val ...] + ;; Old implementation of match macro, which doesn't directly support + ;; `where' and `or'. New syntax is implemented in `match-where', + ;; which simply generates old syntax and feeds it to `match*'. + (let [clauses [...] + vals (match-val-syms clauses)] + (assert (= 0 (math.fmod (length clauses) 2)) + "expected even number of pattern/body pairs") + ;; protect against multiple evaluation of the value, bind against as + ;; many values as we ever match against in the clauses. + (list `let [vals val] (match-condition vals clauses)))) + + ;; Construction of old match syntax from new syntax + + (fn partition-2 [seq] + ;; Partition `seq` by 2. + ;; If `seq` has odd amount of elements, the last one is dropped. + ;; + ;; Input: [1 2 3 4 5] + ;; Output: [[1 2] [3 4]] + (let [firsts [] + seconds [] + res []] + (for [i 1 (length seq) 2] + (let [first (. seq i) + second (. seq (+ i 1))] + (table.insert firsts (if (not= nil first) first `nil)) + (table.insert seconds (if (not= nil second) second `nil)))) + (each [i v1 (ipairs firsts)] + (let [v2 (. seconds i)] + (if (not= nil v2) + (table.insert res [v1 v2])))) + res)) + + (fn transform-or [[_ & pats] guards] + ;; Transforms `(or pat pats*)` lists into match `guard` patterns. + ;; + ;; (or pat1 pat2), guard => [(pat1 ? guard) (pat2 ? guard)] + (let [res []] + (each [_ pat (ipairs pats)] + (table.insert res (list pat `? (unpack guards)))) + res)) + + (fn transform-cond [cond] + ;; Transforms `where` cond into sequence of `match` guards. + ;; + ;; pat => [pat] + ;; (where pat guard) => [(pat ? guard)] + ;; (where (or pat1 pat2) guard) => [(pat1 ? guard) (pat2 ? guard)] + (if (and (list? cond) (= (. cond 1) `where)) + (let [second (. cond 2)] + (if (and (list? second) (= (. second 1) `or)) + (transform-or second [(unpack cond 3)]) + :else + [(list second `? (unpack cond 3))])) + :else + [cond])) + + (fn match-where [val ...] + "Perform pattern matching on val. See reference for details. + + Syntax: + + (match data-expression + pattern body + (where pattern guard guards*) body + (where (or pattern patterns*) guard guards*) body)" + (let [conds-bodies (partition-2 [...]) + else-branch (if (not= 0 (% (select "#" ...) 2)) + (select (select "#" ...) ...)) + match-body []] + (each [_ [cond body] (ipairs conds-bodies)] + (each [_ cond (ipairs (transform-cond cond))] + (table.insert match-body cond) + (table.insert match-body body))) + (if else-branch + (table.insert match-body else-branch)) + (match* val (unpack match-body)))) + + {:-> ->* + :->> ->>* + :-?> -?>* + :-?>> -?>>* + :?. ?dot + :doto doto* + :when when* + :with-open with-open* + :collect collect* + :icollect icollect* + :accumulate accumulate* + :partial partial* + :lambda lambda* + :pick-args pick-args* + :pick-values pick-values* + :macro macro* + :macrodebug macrodebug* + :import-macros import-macros* + :match match-where} + ]===] + local module_name = "fennel.macros" + local _ + local function _620_() + return mod + end + package.preload[module_name] = _620_ + _ = nil + local env + do + local _621_ = specials["make-compiler-env"](nil, compiler.scopes.compiler, {}) + do end (_621_)["utils"] = utils + _621_["fennel"] = mod + env = _621_ + end + local built_ins = eval(builtin_macros, {env = env, scope = compiler.scopes.compiler, allowedGlobals = false, useMetadata = true, filename = "src/fennel/macros.fnl", moduleName = module_name}) + for k, v in pairs(built_ins) do + compiler.scopes.global.macros[k] = v + end + compiler.scopes.global.macros["\206\187"] = compiler.scopes.global.macros.lambda + package.preload[module_name] = nil +end +return mod |