71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file parameterRemapEnumToInt.cxx
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* @author drose
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* @date 2000-08-04
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*/
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#include "parameterRemapEnumToInt.h"
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#include "interrogate.h"
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#include "cppSimpleType.h"
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#include "cppConstType.h"
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#include "cppPointerType.h"
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#include "cppReferenceType.h"
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/**
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*
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*/
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ParameterRemapEnumToInt::
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ParameterRemapEnumToInt(CPPType *orig_type) :
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ParameterRemap(orig_type)
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{
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_new_type = CPPType::new_type(new CPPSimpleType(CPPSimpleType::T_int));
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_enum_type = unwrap_type(_orig_type);
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}
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/**
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* Outputs an expression that converts the indicated variable from the new
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* type to the original type, for passing into the actual C++ function.
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*/
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void ParameterRemapEnumToInt::
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pass_parameter(std::ostream &out, const std::string &variable_name) {
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out << "(" << _enum_type->get_local_name(&parser) << ")" << variable_name;
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}
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/**
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* Returns an expression that evalutes to the appropriate value type for
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* returning from the function, given an expression of the original type.
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*/
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std::string ParameterRemapEnumToInt::
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get_return_expr(const std::string &expression) {
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return "(int)(" + expression + ")";
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}
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/**
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* Recursively walks through the type definition, and finds the enum
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* definition under all the wrappers.
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*/
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CPPType *ParameterRemapEnumToInt::
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unwrap_type(CPPType *source_type) const {
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switch (source_type->get_subtype()) {
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case CPPDeclaration::ST_const:
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return unwrap_type(source_type->as_const_type()->_wrapped_around);
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case CPPDeclaration::ST_reference:
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return unwrap_type(source_type->as_reference_type()->_pointing_at);
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case CPPDeclaration::ST_pointer:
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return unwrap_type(source_type->as_pointer_type()->_pointing_at);
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default:
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return source_type;
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}
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}
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