122 lines
4.1 KiB
C++
122 lines
4.1 KiB
C++
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/*
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* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* InfixOperatorExprAST.C
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*
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* Description: See InfixOperatorExprAST.hh
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*
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* $Id: InfixOperatorExprAST.C,v 3.2 2004/01/31 20:46:15 milo Exp $
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*
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*/
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#include "mem/slicc/ast/InfixOperatorExprAST.hh"
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InfixOperatorExprAST::InfixOperatorExprAST(ExprAST* left_ptr,
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string* op_ptr,
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ExprAST* right_ptr)
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: ExprAST()
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{
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m_left_ptr = left_ptr;
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m_op_ptr = op_ptr;
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m_right_ptr = right_ptr;
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}
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InfixOperatorExprAST::~InfixOperatorExprAST()
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{
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delete m_left_ptr;
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delete m_op_ptr;
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delete m_right_ptr;
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}
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Type* InfixOperatorExprAST::generate(string& code) const
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{
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code += "(";
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Type* left_type_ptr = m_left_ptr->generate(code);
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code += " " + *m_op_ptr + " ";
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Type* right_type_ptr = m_right_ptr->generate(code);
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code += ")";
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string inputs, output;
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// Figure out what the input and output types should be
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if ((*m_op_ptr == "==" ||
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*m_op_ptr == "!=")) {
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output = "bool";
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if (left_type_ptr != right_type_ptr) {
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error("Type mismatch: left & right operand of operator '" + *m_op_ptr +
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"' must be the same type." +
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"left: '" + left_type_ptr->toString() +
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"', right: '" + right_type_ptr->toString() + "'");
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}
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} else {
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if ((*m_op_ptr == "&&" ||
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*m_op_ptr == "||")) {
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// boolean inputs and output
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inputs = "bool";
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output = "bool";
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} else if ((*m_op_ptr == "==" ||
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*m_op_ptr == "!=" ||
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*m_op_ptr == ">=" ||
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*m_op_ptr == "<=" ||
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*m_op_ptr == ">" ||
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*m_op_ptr == "<")) {
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// Integer inputs, boolean output
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inputs = "int";
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output = "bool";
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} else {
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// integer inputs and output
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inputs = "int";
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output = "int";
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}
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Type* inputs_type = g_sym_table.getType(inputs);
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if (inputs_type != left_type_ptr) {
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m_left_ptr->error("Type mismatch: left operand of operator '" + *m_op_ptr +
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"' expects input type '" + inputs + "', actual was " + left_type_ptr->toString() + "'");
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}
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if (inputs_type != right_type_ptr) {
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m_right_ptr->error("Type mismatch: right operand of operator '" + *m_op_ptr +
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"' expects input type '" + inputs + "', actual was '" + right_type_ptr->toString() + "'");
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}
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}
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// All is well
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Type* output_type = g_sym_table.getType(output);
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return output_type;
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}
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void InfixOperatorExprAST::print(ostream& out) const
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{
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out << "[InfixExpr: " << *m_left_ptr
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<< *m_op_ptr << *m_right_ptr << "]";
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}
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