From 3682559a564c510977e2f0243e971065269dcdfc Mon Sep 17 00:00:00 2001
From: yenru0 <yenru0604@gmail.com>
Date: Mon, 17 Nov 2025 15:49:06 +0900
Subject: [PATCH] minor declr parser

---
 include/globals.h | 15 +++++++++++++--
 include/parse.h   | 45 +++++++++++++++++++++++++++++++++++++++++++++
 src/parse.c       | 34 ++++++++++++++++++++++++++++++++++
 3 files changed, 92 insertions(+), 2 deletions(-)

diff --git a/include/globals.h b/include/globals.h
index 17a95d3..db5c8ec 100644
--- a/include/globals.h
+++ b/include/globals.h
@@ -1,7 +1,10 @@
 #pragma once
-#include <stdint.h>
 #include <stddef.h>
+#include <stdint.h>
 
+/**
+ * Token Definitions
+ */
 typedef enum {
     LBRACK,
     RBRACK,
@@ -33,7 +36,7 @@ typedef enum {
 
 typedef struct {
     size_t len;
-    char* string;
+    char *string;
 } TokenString;
 
 typedef struct {
@@ -42,3 +45,11 @@ typedef struct {
     TokenString data;
 } Token;
 
+/**
+ * AST Node Definitions
+ */
+typedef struct ASTNode {
+    Token token;
+    struct ASTNode **children;
+    size_t child_count;
+} ASTNode;
\ No newline at end of file
diff --git a/include/parse.h b/include/parse.h
index e69de29..4d276e1 100644
--- a/include/parse.h
+++ b/include/parse.h
@@ -0,0 +1,45 @@
+#pragma once
+#include <stdint.h>
+
+#include "globals.h"
+#include "lex.h"
+
+typedef struct Parser {
+    Lexer *lexer;
+
+    Token current;
+    Token peek;
+
+    int flag_error;
+} Parser;
+
+Parser *parser_new(Lexer *lexer);
+
+void parser_free(Parser *parser);
+
+static void parser_next(Parser *parser);
+
+static void parser_expect(Parser *parser, TokenType type);
+
+/*
+    PARSER PARSE FUNCTIONS
+*/
+ASTNode *parser_parse_program(Parser *parser);
+
+ASTNode *parser_parse_defn(Parser *parser);
+
+ASTNode *parser_parse_type(Parser *parser);
+
+ASTNode *parser_parse_expr(Parser *parser);
+
+ASTNode *parser_parse_atom(Parser *parser);
+
+ASTNode *parser_parse_stmt(Parser *parser);
+
+ASTNode *parser_parse_block(Parser *parser);
+
+ASTNode *parser_parse_lambda(Parser *parser);
+
+ASTNode *parser_parse_compound(Parser *parser);
+
+ASTNode *parser_parse_params(Parser *parser);
\ No newline at end of file
diff --git a/src/parse.c b/src/parse.c
index 6bca26c..726a158 100644
--- a/src/parse.c
+++ b/src/parse.c
@@ -2,3 +2,37 @@
 
 #include <stdlib.h>
 
+Parser *parser_new(Lexer *lexer) {
+    Parser *parser = malloc(sizeof(Parser));
+    if (parser == NULL) {
+        return NULL;
+    }
+    parser->lexer = lexer;
+    parser->flag_error = 0;
+
+    parser_next(parser);
+    parser_next(parser);
+
+    return parser;
+}
+
+void parser_free(Parser *parser) {
+    free(parser);
+}
+
+static void parser_next(Parser *parser) {
+    parser->current = parser->peek;
+    parser->peek = lexer_next_token(parser->lexer);
+}
+
+static void parser_expect(Parser *parser, TokenType type) {
+    if (parser->current.type == type) {
+        parser_next(parser);
+    } else {
+        parser->flag_error = 1;
+    }
+}
+
+/*
+    IMPL. PARSER PARSE FUNCTIONS 
+*/
\ No newline at end of file