init basic

ccompiler/frontend/parser/tests/test.c

@@ -0,0 +1,4 @@
+extern int _print_str(const char* str);
+int main(void) {
+    _print_str("Hello, world!\n");
+}

ccompiler/frontend/parser/tests/test_file.c

@@ -0,0 +1,14 @@
+
+// int __print_str(char* str);
+int f(void);
+
+int main(void) {
+    int a;
+    // f();
+    // a = 1 + 2 * 3 + 4;
+    // __print_str("Hello, world!\n");
+    a = 3 - f() * (3 + 2) % 6;
+    // 测试用例：
+    // if (a) if (2) 3; else b;
+    // 是否正确解析为 if (a) { if (b) c else d }
+}

ccompiler/frontend/parser/tests/test_parser.c

@@ -0,0 +1,34 @@
+#include "../parser.h"
+#include "../ast/ast.h"
+#include "../symtab/symtab.h"
+#include <stdio.h>
+
+// gcc -g ../parser.c ../../lexer/lexer.c ../ast/ast.c ../ast/block.c ../ast/decl.c ../ast/expr.c ../ast/func.c ../ast/program.c ../ast/stmt.c ../ast/term.c ../symtab/hashmap.c ../symtab/scope.c ../symtab/symtab.c test_parser.c -o test_parser
+// gcc -g test_parser.c -L../.. -lfrontend -o test_parser
+int main(int argc, char** argv) {
+    const char* file_name = "test_file.c";
+    if (argc == 2) {
+        file_name = argv[1];
+    }
+    FILE* fp = fopen(file_name, "r");
+    if (fp == NULL) {
+        perror("open file failed");
+        return 1;
+    }
+    printf("open file success\n");
+
+    struct Lexer lexer;
+    init_lexer(&lexer, file_name, fp, (lexer_sread_fn)fread_s);
+    
+    struct SymbolTable symtab;
+    init_symtab(&symtab);
+
+    struct Parser parser;
+    init_parser(&parser, &lexer, &symtab);
+    parse_prog(&parser);
+
+    printf("parse_end\n");
+    pnt_ast(parser.root, 0);
+
+    return 0;
+}