refactor: 重构前端代码并添加日志功能

- 重命名和重构了多个文件，包括 lexer、parser 和 AST 相关代码
- 添加了日志功能，使用 LOG_* 宏替代原有的 error 和 warn 函数
- 优化了错误处理和内存分配方式
- 调整了代码结构，提高了模块化和可读性

ccompiler/frontend/parser/ast/decl.c

@@ -1,19 +1,19 @@
+#include "../ast.h"
 #include "../parser.h"
-#include "ast.h"
 #include "../symtab/symtab.h"
 
 /**
  * 0 false
  * 1 true
  */
-int peek_decl(tok_buf_t* tokbuf) {
+int peek_decl(tok_stream_t* tokbuf) {
     flush_peek_tok(tokbuf);
     switch (peek_tok_type(tokbuf)) {
         case TOKEN_STATIC:
         case TOKEN_EXTERN:
         case TOKEN_REGISTER:
         case TOKEN_TYPEDEF:
-            error("not impliment");
+            LOG_ERROR("not impliment");
             break;
         default:
             flush_peek_tok(tokbuf);
@@ -36,7 +36,7 @@ int peek_decl(tok_buf_t* tokbuf) {
 }
 
 ast_node_t* parse_decl_val(parser_t* parser) {
-    tok_buf_t* tokbuf = &parser->tokbuf;
+    tok_stream_t* tokbuf = &parser->tokbuf;
     tok_type_t ttype;
     flush_peek_tok(tokbuf);
 
@@ -55,28 +55,28 @@ ast_node_t* parse_decl_val(parser_t* parser) {
     if (ttype == TOKEN_ASSIGN) {
         node->decl_val.expr_stmt = parse_stmt(parser);
         if (node->decl_val.expr_stmt->type != NT_STMT_EXPR) {
-            error("parser_decl_val want stmt_expr");
+            LOG_ERROR("parser_decl_val want stmt_expr");
         }
     } else if (ttype == TOKEN_SEMICOLON) {
         pop_tok(tokbuf);
         expect_pop_tok(tokbuf, TOKEN_SEMICOLON);
     } else {
-        error("parser_decl_val syntax error");
+        LOG_ERROR("parser_decl_val syntax error");
     }
     return node;
 }
 
 ast_node_t* parse_decl(parser_t* parser) {
-    tok_buf_t* tokbuf = &parser->tokbuf;
+    tok_stream_t* tokbuf = &parser->tokbuf;
     flush_peek_tok(tokbuf);
     tok_type_t ttype;
     ast_node_t* node;
     
     if (peek_decl(tokbuf) == 0) {
-        error("syntax error expect decl_val TYPE");
+        LOG_ERROR("syntax error expect decl_val TYPE");
     }
     if (peek_tok_type(tokbuf) != TOKEN_IDENT) {
-        error("syntax error expect decl_val IDENT");
+        LOG_ERROR("syntax error expect decl_val IDENT");
     }
 
     ttype = peek_tok_type(tokbuf);
@@ -89,7 +89,7 @@ ast_node_t* parse_decl(parser_t* parser) {
             node = parse_decl_val(parser);
             break;
         default:
-            error("syntax error expect decl_val ASSIGN or SEMICOLON");
+            LOG_ERROR("syntax error expect decl_val ASSIGN or SEMICOLON");
             return NULL;
     }
     return node;