refactor: define TokenValue to store semantic value

1 files changed, 8 insertions, 1 deletions

diff --git a/common.c b/common.c
index badb1ed..2c1fb37 100644
--- a/common.c
+++ b/common.c
@@ -12,7 +12,7 @@ void fatal_error(const char* msg, ...) {
 #define unimplemented() fatal_error("%s:%d: unimplemented", __FILE__, __LINE__)
 
 struct String {
-    char* data;
+    const char* data;
     size_t len;
 };
 typedef struct String String;
@@ -23,6 +23,13 @@ char* string_to_cstr(const String* s) {
     return buf;
 }
 
+String* cstr_to_new_string(const char* cstr) {
+    String* s = calloc(1, sizeof(String));
+    s->len = strlen(cstr);
+    s->data = strndup(cstr, s->len);
+    return s;
+}
+
 BOOL string_equals(const String* s1, const String* s2) {
     return s1->len == s2->len && strncmp(s1->data, s2->data, s1->len) == 0;
 }