From 40f70d075ea77b80cc35d23cff3aa9d619c95578 Mon Sep 17 00:00:00 2001
From: "Wolfgang (Blub) Bumiller" <blub@speed.at>
Date: Wed, 25 Apr 2012 13:17:37 +0200
Subject: [PATCH] Importing ast.c

---
 ast.c | 158 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 158 insertions(+)
 create mode 100644 ast.c

diff --git a/ast.c b/ast.c
new file mode 100644
index 0000000..d976d80
--- /dev/null
+++ b/ast.c
@@ -0,0 +1,158 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "ast.h"
+
+#define ast_setfunc(me, fn, what) ( *(void**)&((me)->fn) = what )
+
+#define ast_instantiate(T, ctx, destroyfn) \
+	T *self = (T*)mem_a(sizeof(T)); \
+	ast_node_init((ast_node*)self, ctx); \
+	ast_setfunc(&((ast_node*)self)->node, destroy, destroyfn)
+
+/* It must not be possible to get here. */
+static void _ast_node_destroy(ast_node *self)
+{
+	fprintf(stderr, "ast node missing destroy()\n");
+	abort();
+}
+
+/* Initialize main ast node aprts */
+static void ast_node_init(ast_node *self, lex_ctx_t ctx)
+{
+	self->node.context = ctx;
+	self->node.destroy = &_ast_node_destroy;
+}
+
+/* General expression initialization */
+static void ast_expression_init(ast_expression *self,
+                                ast_expression_codegen *codegen)
+{
+	ast_setfunc(&self->expression, codegen, codegen);
+}
+
+ast_value* ast_value_new(lex_ctx_t ctx, const char *name, qc_type_t t)
+{
+	ast_instantiate(ast_value, ctx, ast_value_delete);
+	ast_expression_init((ast_expression*)self,
+	                    (ast_expression_codegen*)&ast_value_codegen);
+
+	self->name = name ? util_strdup(name) : NULL;
+	self->vtype = t;
+	self->next = NULL;
+#if 0
+	self->array = -1;
+#endif
+	VEC_INIT(self, params);
+	self->has_constval = ifalse;
+	memset(&self->cvalue, 0, sizeof(self->cvalue));
+
+	self->ir_v = NULL;
+
+	return self;
+}
+MEM_VEC_FUNCTIONS(ast_value, ast_value*, params)
+
+void ast_value_delete(ast_value* self)
+{
+	size_t i;
+	if (self->_name)
+		mem_d((void*)self->_name);
+	for (i = 0; i < self->params_count; ++i)
+		ast_delete(self->params[i]);
+	VEC_CLEAR(self, params);
+	if (self->next)
+		ast_delete(self->next);
+	if (self->has_constval) {
+		switch (self->vtype)
+		{
+		case qc_string:
+			mem_d((void*)self->cvalue.vstring);
+			break;
+		/* NOTE: delete function? currently collected in
+		 * the parser structure
+		 */
+		default:
+			break;
+		}
+	}
+	mem_d(self);
+}
+
+void ast_value_set_name(ast_value *self, const char *name)
+{
+	if (self->_name)
+		mem_d((void*)self->_name);
+	self->_name = strdup(name);
+}
+
+ast_binary* ast_binary_new(filecontext_t ctx, qc_op_t op,
+                           ast_value* left, ast_value* right)
+{
+	ast_instantiate(ast_binary, ctx, ast_binary_delete);
+	ast_expression_init((ast_expression*)self, (ast_expression_codegen*)codegen);
+
+	self->op = op;
+	self->left = left;
+	self->right = right;
+
+	return self;
+}
+
+void ast_binary_delete(ast_binary *self)
+{
+	mem_d(self);
+}
+
+ast_block* ast_block_new(filecontext_t ctx)
+{
+	ast_instantiate(ast_block, ctx, ast_block_delete);
+	ast_expression_init((ast_expression*)self,
+	                    (ast_expression_codegen*)&ast_block_codegen);
+
+	VEC_INIT(self, locals);
+	VEC_INIT(self, exprs);
+
+	return self;
+}
+MEM_VEC_FUNCTIONS(ast_block, ast_value*, locals)
+MEM_VEC_FUNCTIONS(ast_block, ast_expression*, exprs)
+
+void ast_block_delete(ast_block *self)
+{
+	size_t i;
+	for (i = 0; i < self->locals_count; ++i)
+		ast_delete(self->locals[i]);
+	VEC_CLEAR(self, locals);
+	for (i = 0; i < self->exprs_count; ++i)
+		ast_delete(self->exprs[i]);
+	VEC_CLEAR(self, exprs);
+	mem_d(self);
+}
+
+ast_function* ast_function_new(filecontext_t ctx, const char *name, ast_value *vtype)
+{
+	ast_instantiate(ast_function, ctx, ast_function_delete);
+
+	self->vtype = vtype;
+	self->_name = name ? strdup(name) : NULL;
+	VEC_INIT(self, blocks);
+
+	return self;
+}
+
+MEM_VEC_FUNCTIONS(ast_function, ast_block*, blocks)
+
+void ast_function_delete(ast_function *self)
+{
+	size_t i;
+	if (self->_name)
+		mem_d((void*)self->_name);
+	if (self->vtype)
+		ast_value_delete(self->vtype);
+	for (i = 0; i < self->blocks_count; ++i)
+		ast_delete(self->blocks[i]);
+	VEC_CLEAR(self, blocks);
+	mem_d(self);
+}
-- 
2.39.2