feat add func call and rewrite codes

ccompiler/frontend/parser/parser.h

@@ -2,32 +2,24 @@
 #define __PARSER_H__
 
 #include "../frontend.h"
-#include "../lexer/lexer.h"
-// #include "symbol_table/symtab.h"
-// #include "ast/ast.h"
 
+#include "../lexer/lexer.h"
+typedef struct lexer lexer_t;
+typedef struct symtab symtab_t;
 #define PARSER_MAX_TOKEN_QUEUE 16
 
-struct Parser {
+typedef struct parser {
     struct ASTNode* root;
     struct ASTNode* cur_node;
     
-    struct Lexer* lexer;
-    struct SymbolTable* symtab;
-    int cur_idx;
-    int peek_idx;
-    int end_idx;
-    int size;
-    struct Token TokenBuffer[PARSER_MAX_TOKEN_QUEUE];
+    lexer_t* lexer;
+    symtab_t* symtab;
+    tok_buf_t tokbuf;
+    tok_t TokenBuffer[PARSER_MAX_TOKEN_QUEUE];
     int err_level;
-};
+} parser_t;
 
-void init_parser(struct Parser* parser, struct Lexer* lexer, struct SymbolTable* symtab);
-void run_parser(struct Parser* parser);
-void flushpeektok(struct Parser* parser);
-int poptok(struct Parser* parser);
-struct Token* peektok(struct Parser* parser);
-enum TokenType peektoktype(struct Parser* parser);
-void expecttok(struct Parser* parser, enum TokenType type);
+void init_parser(parser_t* parser, lexer_t* lexer, symtab_t* symtab);
+void run_parser(parser_t* parser);
 
 #endif