diff options
Diffstat (limited to 'tests/test_c_generator.py')
| -rw-r--r-- | tests/test_c_generator.py | 61 |
1 files changed, 59 insertions, 2 deletions
diff --git a/tests/test_c_generator.py b/tests/test_c_generator.py index 3727f91..dd19a11 100644 --- a/tests/test_c_generator.py +++ b/tests/test_c_generator.py @@ -1,11 +1,12 @@ +import os +import platform import sys -import textwrap import unittest # Run from the root dir sys.path.insert(0, '.') -from pycparser import c_parser, c_generator, c_ast +from pycparser import c_parser, c_generator, c_ast, parse_file _c_parser = c_parser.CParser( lex_optimize=False, @@ -332,6 +333,62 @@ class TestCtoC(unittest.TestCase): name='', ) + def test_array_decl(self): + self._assert_ctoc_correct('int g(const int a[const 20]){}') + ast = parse_to_ast('const int a[const 20];') + generator = c_generator.CGenerator() + self.assertEqual(generator.visit(ast.ext[0].type), + 'const int [const 20]') + self.assertEqual(generator.visit(ast.ext[0].type.type), + 'const int') + + def test_ptr_decl(self): + src = 'const int ** const x;' + self._assert_ctoc_correct(src) + ast = parse_to_ast(src) + generator = c_generator.CGenerator() + self.assertEqual(generator.visit(ast.ext[0].type), + 'const int ** const') + self.assertEqual(generator.visit(ast.ext[0].type.type), + 'const int *') + self.assertEqual(generator.visit(ast.ext[0].type.type.type), + 'const int') + + +class TestCasttoC(unittest.TestCase): + def _find_file(self, name): + test_dir = os.path.dirname(__file__) + name = os.path.join(test_dir, 'c_files', name) + assert os.path.exists(name) + return name + + def test_to_type(self): + src = 'int *x;' + generator = c_generator.CGenerator() + test_fun = c_ast.FuncCall(c_ast.ID('test_fun'), c_ast.ExprList([])) + + ast1 = parse_to_ast(src) + int_ptr_type = ast1.ext[0].type + int_type = int_ptr_type.type + self.assertEqual(generator.visit(c_ast.Cast(int_ptr_type, test_fun)), + '(int *) test_fun()') + self.assertEqual(generator.visit(c_ast.Cast(int_type, test_fun)), + '(int) test_fun()') + + @unittest.skipUnless(platform.system() == 'Linux', + 'cpp only works on Linux') + def test_to_type_with_cpp(self): + generator = c_generator.CGenerator() + test_fun = c_ast.FuncCall(c_ast.ID('test_fun'), c_ast.ExprList([])) + memmgr_path = self._find_file('memmgr.h') + + ast2 = parse_file(memmgr_path, use_cpp=True) + void_ptr_type = ast2.ext[-3].type.type + void_type = void_ptr_type.type + self.assertEqual(generator.visit(c_ast.Cast(void_ptr_type, test_fun)), + '(void *) test_fun()') + self.assertEqual(generator.visit(c_ast.Cast(void_type, test_fun)), + '(void) test_fun()') if __name__ == "__main__": unittest.main() |