Implement tokens for unsigned int and double data types (CrossGL#68)

* feat: Implement tokens for unsigned int and double data types.

* chore: Add test for data type tokenization

* feat: Refactor unsigned int to uint after review and edit tests for same

crosstl/src/translator/lexer.py

@@ -17,6 +17,8 @@
     ("FLOAT_NUMBER", r"\d*\.\d+|\d+\.\d*"),
     ("FLOAT", r"\bfloat\b"),
     ("INT", r"\bint\b"),
+    ("UINT", r"\buint\b"),
+    ("DOUBLE", r"\bdouble\b"),
     ("SAMPLER2D", r"\bsampler2D\b"),
     ("IDENTIFIER", r"[a-zA-Z_][a-zA-Z_0-9]*"),
     ("NUMBER", r"\d+(\.\d+)?"),

tests/test_translator/test_lexer.py

@@ -99,3 +99,17 @@ def test_function_call_tokenization():
         tokenize_code(code)
     except SyntaxError:
         pytest.fail("Function call tokenization not implemented.")
+
+
+def test_data_types_tokenization():
+    code = """
+    int a;
+    uint b;
+    float c;
+    double d;
+    bool e;
+    """
+    try:
+        tokenize_code(code)
+    except SyntaxError:
+        pytest.fail("Data types tokenization not implemented.")