minor

3 files changed, 13 insertions, 4 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a470cdb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+parser.c
+parser.h
+badthing
diff --git a/ast.c b/ast.c
index 07c0f34..94c0a66 100644
--- a/ast.c
+++ b/ast.c
@@ -2,6 +2,7 @@
 #include <stdlib.h>
 #include <stddef.h>
 #include <stdio.h>
+#include <assert.h>
 
 AstVec astvec_new() {
 	AstNode *vals = malloc(2 * sizeof(AstNode));
@@ -23,6 +24,12 @@ void astvec_append(AstVec *v, AstNode val) {
 	v->len ++;
 }
 
+void astnode_append(AstNode *l, AstNode val) {
+	printf("   astnode_append: %d\n",l->ty);
+	assert(l->ty == AST_LIST);
+	astvec_append(&l->as.list, val);
+}
+
 AstNode astnode_new_num(int n) {
 	return (AstNode){
 		.ty = AST_NUM,
@@ -41,6 +48,3 @@ AstNode astnode_new_list() {
 	};
 }
 
-
-
-
diff --git a/ast.h b/ast.h
index 84a3341..f352992 100644
--- a/ast.h
+++ b/ast.h
@@ -5,8 +5,9 @@
 #include <stddef.h>
 
 typedef enum {
-	AST_NUM,
+	AST_NOTHING,
 	AST_LIST,
+	AST_NUM,
 } AstTy;
 
 struct _astnode;
@@ -29,6 +30,7 @@ struct _astnode {
 
 AstVec astvec_new();
 void astvec_append(AstVec *v, AstNode val);
+void astnode_append(AstNode *l, AstNode val);
 
 AstNode astnode_new_num(int n);
 AstNode astnode_new_list();