feat(parser): new style parser * 7

Author: tenphi

src/parser/classify.ts

@@ -16,6 +16,14 @@ export function classify(
   const token = raw.trim();
   if (!token) return { bucket: Bucket.Mod, processed: '' };
 
+  // Quoted string literals should be treated as value tokens (e.g., "" for content)
+  if (
+    (token.startsWith('"') && token.endsWith('"')) ||
+    (token.startsWith("'") && token.endsWith("'"))
+  ) {
+    return { bucket: Bucket.Value, processed: token };
+  }
+
   // 0. Direct var(--*-color) token
   const varColorMatch = token.match(/^var\(--([a-z0-9-]+)-color\)$/);
   if (varColorMatch) {

src/parser/parser.test.ts

@@ -173,4 +173,17 @@ describe('StyleProcessor', () => {
     const r = parser.process('#dark-02');
     expect(r.groups[0].colors).toEqual(['var(--dark-02-color)']);
   });
+
+  test('parses empty string literal', () => {
+    const res = parser.process('""');
+    expect(res.groups[0].values).toEqual(['""']);
+  });
+
+  test('parses calc with custom props inside parentheses', () => {
+    const expr = '(@slider-range-end - @slider-range-start)';
+    const res = parser.process(expr);
+    expect(res.groups[0].values).toEqual([
+      'calc(var(--slider-range-end) - var(--slider-range-start))',
+    ]);
+  });
 });