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/*
* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* MethodCallExprAST.cc
*
* Description: See MethodCallExprAST.hh
*
* $Id$
*
*/
#include "mem/slicc/ast/MethodCallExprAST.hh"
MethodCallExprAST::MethodCallExprAST(ExprAST* obj_expr_ptr,
string* proc_name_ptr,
Vector<ExprAST*>* expr_vec_ptr)
: ExprAST()
{
m_obj_expr_ptr = obj_expr_ptr;
m_type_ptr = NULL;
m_proc_name_ptr = proc_name_ptr;
m_expr_vec_ptr = expr_vec_ptr;
}
MethodCallExprAST::MethodCallExprAST(TypeAST* type_ptr,
string* proc_name_ptr,
Vector<ExprAST*>* expr_vec_ptr)
: ExprAST()
{
m_obj_expr_ptr = NULL;
m_type_ptr = type_ptr;
m_proc_name_ptr = proc_name_ptr;
m_expr_vec_ptr = expr_vec_ptr;
}
MethodCallExprAST::~MethodCallExprAST()
{
delete m_obj_expr_ptr;
delete m_type_ptr;
delete m_proc_name_ptr;
int size = m_expr_vec_ptr->size();
for(int i=0; i<size; i++) {
delete (*m_expr_vec_ptr)[i];
}
delete m_expr_vec_ptr;
}
Type* MethodCallExprAST::generate(string& code) const
{
Type* obj_type_ptr = NULL;
string methodId;
Vector <Type*> paramTypes;
int actual_size = m_expr_vec_ptr->size();
for(int i=0; i<actual_size; i++) {
string tmp;
Type* actual_type_ptr = (*m_expr_vec_ptr)[i]->generate(tmp);
paramTypes.insertAtBottom(actual_type_ptr);
}
if(m_obj_expr_ptr) {
// member method call
string tmp;
obj_type_ptr = m_obj_expr_ptr->generate(tmp);
methodId = obj_type_ptr->methodId(*m_proc_name_ptr, paramTypes);
if (obj_type_ptr->methodReturnType(methodId)->isInterface())
code += "static_cast<" + obj_type_ptr->methodReturnType(methodId)->cIdent() + "&>";
code += "((";
code += tmp;
code += ").";
} else if (m_type_ptr) {
// class method call
code += "(" + m_type_ptr->toString() + "::";
obj_type_ptr = m_type_ptr->lookupType();
methodId = obj_type_ptr->methodId(*m_proc_name_ptr, paramTypes);
} else {
// impossible
assert(0);
}
// generate code
actual_size = m_expr_vec_ptr->size();
code += (*m_proc_name_ptr) + "(";
for(int i=0; i<actual_size; i++) {
if (i != 0) {
code += ", ";
}
// Check the types of the parameter
Type* actual_type_ptr = (*m_expr_vec_ptr)[i]->generate(code);
}
code += "))";
// Verify that this is a method of the object
if (!obj_type_ptr->methodExist(methodId)) {
error("Invalid method call: Type '" + obj_type_ptr->toString() + "' does not have a method '" + methodId + "'");
}
int expected_size = obj_type_ptr->methodParamType(methodId).size();
if (actual_size != expected_size) {
// Right number of parameters
ostringstream err;
err << "Wrong number of parameters for function name: '" << *m_proc_name_ptr << "'";
err << ", expected: ";
err << expected_size;
err << ", actual: ";
err << actual_size;
error(err.str());
}
for(int i=0; i<actual_size; i++) {
// Check the types of the parameter
Type* actual_type_ptr = paramTypes[i];
Type* expected_type_ptr = obj_type_ptr->methodParamType(methodId)[i];
if (actual_type_ptr != expected_type_ptr) {
(*m_expr_vec_ptr)[i]->error("Type mismatch: expected: " + expected_type_ptr->toString() +
" actual: " + actual_type_ptr->toString());
}
}
// Return the return type of the method
return obj_type_ptr->methodReturnType(methodId);
}
void MethodCallExprAST::findResources(Map<Var*, string>& resource_list) const
{
}
void MethodCallExprAST::print(ostream& out) const
{
out << "[MethodCallExpr: " << *m_proc_name_ptr << *m_obj_expr_ptr << " " << *m_expr_vec_ptr << "]";
}
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