initial

1 files changed, 46 insertions, 0 deletions

diff --git a/ast.c b/ast.c
new file mode 100644
index 0000000..07c0f34
--- /dev/null
+++ b/ast.c
@@ -0,0 +1,46 @@
+#include "ast.h"
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdio.h>
+
+AstVec astvec_new() {
+	AstNode *vals = malloc(2 * sizeof(AstNode));
+	return (AstVec){
+		.len = 0,
+		.cap = 2,
+		vals = vals
+	};
+}
+
+void astvec_append(AstVec *v, AstNode val) {
+	if (v->len == v->cap) {
+		size_t newcap = v->cap * 2;
+		printf("%ld to %ld\n", v->cap, newcap);
+		v->vals = realloc(v->vals, newcap * sizeof(AstNode));
+		v->cap = newcap;
+	}
+	v->vals[v->len] = val;
+	v->len ++;
+}
+
+AstNode astnode_new_num(int n) {
+	return (AstNode){
+		.ty = AST_NUM,
+		.as = {
+			.num = n,
+		},
+	};
+}
+
+AstNode astnode_new_list() {
+	return (AstNode){
+		.ty = AST_LIST,
+		.as = {
+			.list = astvec_new()
+		}
+	};
+}
+
+
+
+