init basic

ccompiler/frontend/lexer/tests/test_lexer.c

@@ -0,0 +1,46 @@
+#include "../lexer.h"
+#include <stdio.h>
+// gcc -g ../lexer.c test_lexer.c -o test_lexer
+/*
+struct TokenConstant {
+   int have;
+   union {
+       char ch;
+       int i;
+       float f;
+       double d;
+       long long ll;
+       char* str;
+   };
+};
+*/
+
+int g_num;
+int g_num_arr[3];
+int main(int argc, char* argv[]) {
+    int num = 0;
+
+    const char* file_name = "test_lexer.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, "test_lexter.c", fp, (lexer_sread_fn)fread_s);
+    struct Token tok;
+
+    while (1) {
+        get_valid_token(&lexer, &tok);
+        if (tok.type == TOKEN_EOF) {
+            break;
+        }
+        printf("line: %d, column: %d, type: %3d, typename: %s\n",
+            lexer.line, lexer.index, tok.type, get_token_name(tok.type));
+    }
+}