88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
|
#include "codegen.hpp"
|
||
|
|
#include "hash_map.hpp"
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
struct CodeGen {
|
||
|
|
AstNode *root;
|
||
|
|
HashMap<Buf *, AstNode *, buf_hash, buf_eql_buf> fn_decls;
|
||
|
|
ZigList<ErrorMsg> errors;
|
||
|
|
};
|
||
|
|
|
||
|
|
CodeGen *create_codegen(AstNode *root) {
|
||
|
|
CodeGen *g = allocate<CodeGen>(1);
|
||
|
|
g->root = root;
|
||
|
|
g->fn_decls.init(32);
|
||
|
|
return g;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void add_node_error(CodeGen *g, AstNode *node, Buf *msg) {
|
||
|
|
g->errors.add_one();
|
||
|
|
ErrorMsg *last_msg = &g->errors.last();
|
||
|
|
last_msg->line_start = node->line;
|
||
|
|
last_msg->column_start = node->column;
|
||
|
|
last_msg->line_end = -1;
|
||
|
|
last_msg->column_end = -1;
|
||
|
|
last_msg->msg = msg;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void analyze_node(CodeGen *g, AstNode *node) {
|
||
|
|
switch (node->type) {
|
||
|
|
case NodeTypeRoot:
|
||
|
|
for (int i = 0; i < node->data.root.fn_decls.length; i += 1) {
|
||
|
|
AstNode *child = node->data.root.fn_decls.at(i);
|
||
|
|
analyze_node(g, child);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case NodeTypeFnDecl:
|
||
|
|
{
|
||
|
|
auto entry = g->fn_decls.maybe_get(&node->data.fn_decl.name);
|
||
|
|
if (entry) {
|
||
|
|
add_node_error(g, node,
|
||
|
|
buf_sprintf("redefinition of '%s'", buf_ptr(&node->data.fn_decl.name)));
|
||
|
|
} else {
|
||
|
|
g->fn_decls.put(&node->data.fn_decl.name, node);
|
||
|
|
for (int i = 0; i < node->data.fn_decl.params.length; i += 1) {
|
||
|
|
AstNode *child = node->data.fn_decl.params.at(i);
|
||
|
|
analyze_node(g, child);
|
||
|
|
}
|
||
|
|
analyze_node(g, node->data.fn_decl.return_type);
|
||
|
|
analyze_node(g, node->data.fn_decl.body);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case NodeTypeParamDecl:
|
||
|
|
analyze_node(g, node->data.param_decl.type);
|
||
|
|
break;
|
||
|
|
case NodeTypeType:
|
||
|
|
break;
|
||
|
|
case NodeTypePointerType:
|
||
|
|
break;
|
||
|
|
case NodeTypeBlock:
|
||
|
|
break;
|
||
|
|
case NodeTypeStatement:
|
||
|
|
break;
|
||
|
|
case NodeTypeExpressionStatement:
|
||
|
|
break;
|
||
|
|
case NodeTypeReturnStatement:
|
||
|
|
break;
|
||
|
|
case NodeTypeExpression:
|
||
|
|
break;
|
||
|
|
case NodeTypeFnCall:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void semantic_analyze(CodeGen *g) {
|
||
|
|
// Pass 1.
|
||
|
|
analyze_node(g, g->root);
|
||
|
|
}
|
||
|
|
|
||
|
|
void code_gen(CodeGen *g) {
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
ZigList<ErrorMsg> *codegen_error_messages(CodeGen *g) {
|
||
|
|
return &g->errors;
|
||
|
|
}
|