# Copyright 2014-2017 Insight Software Consortium.
# Copyright 2004-2009 Roman Yakovenko.
# Distributed under the Boost Software License, Version 1.0.
# See http://www.boost.org/LICENSE_1_0.txt

from pygccxml import utils
from pygccxml import declarations
from pygccxml import parser

import os
import sys
import warnings
warnings.simplefilter("error", Warning)
# Find out the file location within the sources tree
this_module_dir_path = os.path.abspath(
    os.path.dirname(sys.modules[__name__].__file__))

# Find out the c++ parser
generator_path, generator_name = utils.find_xml_generator()

# Configure the xml generator
xml_generator_config = parser.xml_generator_configuration_t(
    xml_generator_path=generator_path,
    xml_generator=generator_name)

# The c++ file we want to parse
filename = "example.hpp"
filename = this_module_dir_path + "/" + filename

decls = parser.parse([filename], xml_generator_config)
global_namespace = declarations.get_global_namespace(decls)

c1 = global_namespace.variable("c1")
print(str(c1), type(c1))
# > 'c1 [variable]', <class 'pygccxml.declarations.variable.variable_t'>

print(str(c1.decl_type), type(c1.decl_type))
# > 'int const', <class 'pygccxml.declarations.cpptypes.const_t'>

base = declarations.remove_const(c1.decl_type)
print(str(base), type(base))
# > 'int', <class 'pygccxml.declarations.cpptypes.int_t'>

c2 = global_namespace.variable("c2")
print(str(c2.decl_type), type(c2.decl_type))
# > 'int const', <class 'pygccxml.declarations.cpptypes.const_t'>
# Even if the declaration was defined as 'const int', pygccxml will always
# output the const qualifier (and some other qualifiers) on the right hand
# side (by convention).

cv1 = global_namespace.variable("cv1")
print(str(cv1.decl_type), type(cv1.decl_type))
# > 'int const volatile', <class 'pygccxml.declarations.cpptypes.volatile_t'>

# Remove one level:
base = declarations.remove_volatile(cv1.decl_type)
print(str(base), type(base))
# > 'int const', <class 'pygccxml.declarations.cpptypes.const_t'>

# Remove the second level:
base = declarations.remove_const(base)
print(str(base), type(base))
# > 'int', <class 'pygccxml.declarations.cpptypes.int_t'>

# We can also directly do this in one step:
base = declarations.remove_cv(cv1.decl_type)
print(str(base), type(base))
# > 'int', <class 'pygccxml.declarations.cpptypes.int_t'>

# As for consts, the const and volatile are on the right hand side
# (by convention), and always in the same order
cv2 = global_namespace.variable("cv2")
print(str(cv2.decl_type), type(cv2.decl_type))
# > 'int const volatile', <class 'pygccxml.declarations.cpptypes.volatile_t'>

# And a last example with a pointer_t:
cptr1 = global_namespace.variable("cptr1")
print(str(cptr1.decl_type), type(cptr1.decl_type))
# > 'int const * const', <class 'pygccxml.declarations.cpptypes.const_t'>)

base = declarations.remove_const(cptr1.decl_type)
print(str(base), type(base))
# > 'int const *', <class 'pygccxml.declarations.cpptypes.pointer_t'>

base = declarations.remove_pointer(base)
print(str(base), type(base))
# > 'int const', <class 'pygccxml.declarations.cpptypes.const_t'>)

base = declarations.remove_const(base)
print(str(base), type(base))
# > 'int', <class 'pygccxml.declarations.cpptypes.int_t'>)