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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.
*/
/*
* InfixOperatorExprAST.C
*
* Description: See InfixOperatorExprAST.hh
*
* $Id: InfixOperatorExprAST.C,v 3.2 2004/01/31 20:46:15 milo Exp $
*
*/
#include "mem/slicc/ast/InfixOperatorExprAST.hh"
InfixOperatorExprAST::InfixOperatorExprAST(ExprAST* left_ptr,
string* op_ptr,
ExprAST* right_ptr)
: ExprAST()
{
m_left_ptr = left_ptr;
m_op_ptr = op_ptr;
m_right_ptr = right_ptr;
}
InfixOperatorExprAST::~InfixOperatorExprAST()
{
delete m_left_ptr;
delete m_op_ptr;
delete m_right_ptr;
}
Type* InfixOperatorExprAST::generate(string& code) const
{
code += "(";
Type* left_type_ptr = m_left_ptr->generate(code);
code += " " + *m_op_ptr + " ";
Type* right_type_ptr = m_right_ptr->generate(code);
code += ")";
string inputs, output;
// Figure out what the input and output types should be
if ((*m_op_ptr == "==" ||
*m_op_ptr == "!=")) {
output = "bool";
if (left_type_ptr != right_type_ptr) {
error("Type mismatch: left & right operand of operator '" + *m_op_ptr +
"' must be the same type." +
"left: '" + left_type_ptr->toString() +
"', right: '" + right_type_ptr->toString() + "'");
}
} else {
if ((*m_op_ptr == "&&" ||
*m_op_ptr == "||")) {
// boolean inputs and output
inputs = "bool";
output = "bool";
} else if ((*m_op_ptr == "==" ||
*m_op_ptr == "!=" ||
*m_op_ptr == ">=" ||
*m_op_ptr == "<=" ||
*m_op_ptr == ">" ||
*m_op_ptr == "<")) {
// Integer inputs, boolean output
inputs = "int";
output = "bool";
} else {
// integer inputs and output
inputs = "int";
output = "int";
}
Type* inputs_type = g_sym_table.getType(inputs);
if (inputs_type != left_type_ptr) {
m_left_ptr->error("Type mismatch: left operand of operator '" + *m_op_ptr +
"' expects input type '" + inputs + "', actual was " + left_type_ptr->toString() + "'");
}
if (inputs_type != right_type_ptr) {
m_right_ptr->error("Type mismatch: right operand of operator '" + *m_op_ptr +
"' expects input type '" + inputs + "', actual was '" + right_type_ptr->toString() + "'");
}
}
// All is well
Type* output_type = g_sym_table.getType(output);
return output_type;
}
void InfixOperatorExprAST::print(ostream& out) const
{
out << "[InfixExpr: " << *m_left_ptr
<< *m_op_ptr << *m_right_ptr << "]";
}
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