def p_constant_1(self, p):
""" constant : INT_CONST_DEC
| INT_CONST_OCT
| INT_CONST_HEX
"""
p[0] = c_ast.Constant(
'int', p[1], self._coord(p.lineno(1)))
def p_constant_2(self, p):
""" constant : FLOAT_CONST """
if p[1][-1] in ('f', 'F'):
t = 'float'
elif p[1][-1] in ('l', 'L'):
t = 'long double'
else:
t = 'double'
p[0] = c_ast.Constant(t, p[1], self._token_coord(p, 1))
def p_constant_1(self, p):
""" constant : INT_CONST """
uCount = 0
lCount = 0
for x in p[1][-3:]:
if x in ('l', 'L'):
lCount += 1
elif x in ('u', 'U'):
uCount += 1
if uCount > 1:
raise ValueError('常量尾缀错误，含有多于1个u/U')
elif lCount > 2:
raise ValueError('常量尾缀错误，含有多余2个l/L')
prefix = 'unsigned ' * uCount + 'long ' * lCount
p[0] = c_ast.Constant(prefix + 'int', p[1], self._token_coord(p, 1))
def p_string_literal(self, p):
""" string_literal : STRING_LITERAL """
p[0] = c_ast.Constant(
'string', p[1].replace('\n', '\\n'), self._token_coord(p, 1))
def p_constant_3(self, p):
""" constant : CHAR_CONST """
p[0] = c_ast.Constant('char', p[1], self._token_coord(p, 1))
def p_constant_3(self, p):
""" constant : CHAR_CONST
| WCHAR_CONST
"""
p[0] = c_ast.Constant(
'char', p[1], self._coord(p.lineno(1)))
def p_constant_2(self, p):
""" constant : FLOAT_CONST """
p[0] = c_ast.Constant(
'float', p[1], self._coord(p.lineno(1)))
def p_primary_expression_3(self, p):
""" primary_expression : STRING_LITERAL
| WSTRING_LITERAL
"""
p[0] = c_ast.Constant(
'string', p[1], self._coord(p.lineno(1)))
