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ExpressionAssign.cpp
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138 lines (120 loc) · 4.36 KB
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// -*- mode: C++ -*-
//
// Copyright (c) 2007, 2008, 2010, 2011, 2013, 2015, 2017 The University of Utah
// All rights reserved.
//
// This file is part of `csmith', a random generator of C programs.
//
// 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.
//
// 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.
#include <config.h>
#include "Block.h"
#include "Bookkeeper.h"
#include "CGContext.h"
#include "CGOptions.h"
#include "Common.h"
#include "ExpressionAssign.h"
#include "FactMgr.h"
#include "Function.h"
#include "StringUtils.h"
#include "Variable.h"
#include <cassert>
///////////////////////////////////////////////////////////////////////////////
/*
*
*/
Expression *ExpressionAssign::make_random(CGContext &cg_context,
const Type *type,
const CVQualifiers *qfer) {
if (qfer == nullptr) {
CVQualifiers qf =
CVQualifiers::random_qualifiers(type, Effect::Access::WRITE, cg_context, true);
StatementAssign *sa = StatementAssign::make_random(cg_context, type, &qf);
FactMgr *fm = get_fact_mgr(&cg_context);
FactMgr::update_fact_for_assign(sa, fm->global_facts);
ExpressionAssign *ea = new ExpressionAssign(sa);
return ea;
}
StatementAssign *sa = StatementAssign::make_random(cg_context, type, qfer);
FactMgr *fm = get_fact_mgr(&cg_context);
FactMgr::update_fact_for_assign(sa, fm->global_facts);
ExpressionAssign *ea = new ExpressionAssign(sa);
return ea;
}
ExpressionAssign::ExpressionAssign(const StatementAssign *sa)
: Expression(eTermType::eAssignment), assign(sa) {}
/*
*
*/
ExpressionAssign::~ExpressionAssign(void) {
/*if (assign) {
delete assign;
assign = nullptr;
}*/
}
Expression *ExpressionAssign::clone() const {
return new ExpressionAssign(assign);
}
CVQualifiers ExpressionAssign::get_qualifiers(void) const {
return assign->get_lhs()->get_qualifiers();
}
/*
* return if a variable is referenced in this expression
*/
bool ExpressionAssign::use_var(const Variable *v) const {
if (assign->get_lhs()->use_var(v) || assign->get_expr()->use_var(v)) {
return true;
}
return false;
}
bool ExpressionAssign::equals(int num) const {
return assign->is_simple_assign() && assign->get_expr()->equals(num);
}
bool ExpressionAssign::is_0_or_1(void) const {
return assign->is_simple_assign() && assign->get_expr()->is_0_or_1();
}
void ExpressionAssign::get_eval_to_subexps(
vector<const Expression *> &subs) const {
vector<const Expression *> exps;
get_lhs()->get_eval_to_subexps(exps);
subs.insert(subs.end(), exps.begin(), exps.end());
}
bool ExpressionAssign::visit_facts(vector<const Fact *> &inputs,
CGContext &cg_context) const {
return assign->visit_facts(inputs, cg_context);
}
void ExpressionAssign::Output(std::ostream &out) const {
output_cast(out);
out << "(";
assign->OutputAsExpr(out);
out << ")";
}
void ExpressionAssign::indented_output(std::ostream &out, int indent) const {
output_tab(out, indent);
Output(out);
}
///////////////////////////////////////////////////////////////////////////////
// Local Variables:
// c-basic-offset: 4
// tab-width: 4
// End:
// End of file.