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music_ast_consumer.cpp
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music_ast_consumer.cpp
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#include "music_ast_consumer.h"
#include "music_utility.h"
set<string> rhs_to_const_mutation_operators{"RGCR", "RLCR", "RRCR"};
set<string> rhs_to_var_mutation_operators{"RGSR", "RLSR", "RGPR", "RLPR",
"RGTR", "RLTR", "RGAR", "RLAR"};
MusicASTVisitor::MusicASTVisitor(
clang::CompilerInstance *CI,
std::vector<StmtMutantOperator*> &stmt_operator_list,
std::vector<ExprMutantOperator*> &expr_operator_list,
MusicContext &context)
: src_mgr_(CI->getSourceManager()),
comp_inst_(CI), context_(context), stmt_context_(context.getStmtContext()),
stmt_mutant_operator_list_(stmt_operator_list),
expr_mutant_operator_list_(expr_operator_list)
{
proteumstyle_stmt_end_line_num_ = 0;
// setup for rewriter
rewriter_.setSourceMgr(src_mgr_, CI->getLangOpts());
// set range variables to a 0 range, start_loc and end_loc at the same point
SourceLocation start_of_file;
start_of_file = src_mgr_.getLocForStartOfFile(src_mgr_.getMainFileID());
functionprototype_range_ = new SourceRange(start_of_file, start_of_file);
array_decl_range_ = new SourceRange(start_of_file, start_of_file);
context_.switchstmt_info_list_ = &switchstmt_info_list_;
context_.non_VTWD_mutatable_scalarref_list_ = &non_VTWD_mutatable_scalarref_list_;
context_.scope_list_ = &scope_list_;
stmt_context_.loop_scope_list_ = &loop_scope_list_;
}
void MusicASTVisitor::UpdateAddressOfRange(
UnaryOperator *uo, SourceLocation *start_loc, SourceLocation *end_loc)
{
// cout << "UpdateAddressOfRange called\n";
Expr *sub_expr_of_unaryop = uo->getSubExpr()->IgnoreImpCasts();
if (isa<ParenExpr>(sub_expr_of_unaryop))
{
ParenExpr *pe;
while (pe = dyn_cast<ParenExpr>(sub_expr_of_unaryop))
sub_expr_of_unaryop = pe->getSubExpr()->IgnoreImpCasts();
}
if (ExprIsDeclRefExpr(sub_expr_of_unaryop) ||
ExprIsPointerDereferenceExpr(sub_expr_of_unaryop) ||
isa<MemberExpr>(sub_expr_of_unaryop) ||
isa<ArraySubscriptExpr>(sub_expr_of_unaryop))
{
stmt_context_.setAddressOpRange(new SourceRange(*start_loc, *end_loc));
}
}
/**
@param scalarref_name: string of name of a declaration reference
@return True if reference name is not in the prohibited list
False otherwise
*/
bool MusicASTVisitor::IsScalarRefMutatableByVtwd(string scalarref_name)
{
// cout << "IsScalarRefMutatableByVtwd called\n";
// if reference name is in the nonMutatableList then it is not mutatable
for (auto it = non_VTWD_mutatable_scalarref_list_.begin();
it != non_VTWD_mutatable_scalarref_list_.end(); ++it)
{
if (scalarref_name.compare(*it) == 0)
return false;
}
return true;
}
/**
if there are addition of multiple scalar reference
then only mutate one, put all the other inside the nonMutatableList
@param e: pointer to an expression
exclude_last_scalarref: boolean variable.
True if the function should exclude one reference
for application of VTWD.
False if the function should collect all reference possible.
@return True if a scalar reference is excluded
(VTWD can apply to that ref)
False otherwise
*/
bool MusicASTVisitor::CollectNonVtwdMutatableScalarRef(
Expr *e, bool exclude_last_scalarref)
{
// cout << "CollectNonVtwdMutatableScalarRef called\n";
bool scalarref_excluded{false};
if (BinaryOperator *bo = dyn_cast<BinaryOperator>(e))
{
if (bo->isAdditiveOp())
{
Expr *rhs = bo->getRHS()->IgnoreImpCasts();
Expr *lhs = bo->getLHS()->IgnoreImpCasts();
if (!exclude_last_scalarref) // collect all references possible
{
if (ExprIsScalarReference(rhs))
{
string reference_name{
ConvertToString(rhs, comp_inst_->getLangOpts())};
// if this scalar reference is mutatable then block it
if (IsScalarRefMutatableByVtwd(reference_name))
non_VTWD_mutatable_scalarref_list_.push_back(reference_name);
}
else if (ParenExpr *pe = dyn_cast<ParenExpr>(rhs))
CollectNonVtwdMutatableScalarRef(pe->getSubExpr(), false);
else
; // do nothing
if (ExprIsScalarReference(lhs))
{
string reference_name{
ConvertToString(lhs, comp_inst_->getLangOpts())};
// if this scalar reference is mutatable then block it
if (IsScalarRefMutatableByVtwd(reference_name))
non_VTWD_mutatable_scalarref_list_.push_back(reference_name);
}
else if (ParenExpr *pe = dyn_cast<ParenExpr>(lhs))
CollectNonVtwdMutatableScalarRef(pe->getSubExpr(), false);
else
; // do nothing
}
else // have to exclude 1 scalar reference for VTWD
{
if (ExprIsScalarReference(rhs))
{
scalarref_excluded = true;
}
else if (ParenExpr *pe = dyn_cast<ParenExpr>(rhs))
{
if (CollectNonVtwdMutatableScalarRef(pe->getSubExpr(), true))
scalarref_excluded = true;
}
else
;
if (ExprIsScalarReference(lhs))
{
if (scalarref_excluded)
{
string reference_name{
ConvertToString(lhs, comp_inst_->getLangOpts())};
// if this scalar reference is mutatable then block it
if (IsScalarRefMutatableByVtwd(reference_name))
non_VTWD_mutatable_scalarref_list_.push_back(reference_name);
}
else
scalarref_excluded = true;
}
else if (ParenExpr *pe = dyn_cast<ParenExpr>(lhs))
{
if (scalarref_excluded)
CollectNonVtwdMutatableScalarRef(pe->getSubExpr(), false);
else
{
if (CollectNonVtwdMutatableScalarRef(pe->getSubExpr(), true))
scalarref_excluded = true;
}
}
else
;
}
}
}
return scalarref_excluded;
}
void MusicASTVisitor::HandleUnaryOperatorExpr(UnaryOperator *uo)
{
// cout << "HandleUnaryOperatorExpr called\n";
SourceLocation start_loc = uo->getBeginLoc();
SourceLocation end_loc = GetEndLocOfUnaryOpExpr(uo, comp_inst_);
// Retrieve the range of UnaryOperator address-of
// to prevent getting-address-of-a-register error.
if (uo->getOpcode() == UO_AddrOf)
{
UpdateAddressOfRange(uo, &start_loc, &end_loc);
}
else if (uo->getOpcode() == UO_PostInc || uo->getOpcode() == UO_PreInc ||
uo->getOpcode() == UO_PostDec || uo->getOpcode() == UO_PreDec)
{
stmt_context_.setUnaryIncrementDecrementRange(
new SourceRange(start_loc, end_loc));
}
}
void MusicASTVisitor::HandleBinaryOperatorExpr(Expr *e)
{
// cout << "HandleBinaryOperatorExpr called\n";
// cout << "HandleBinaryOperatorExpr\n" << ConvertToString(e, comp_inst_->getLangOpts()) << endl;
BinaryOperator *bo = cast<BinaryOperator>(e);
// if (bo->getOpcode() == BO_Sub && ExprIsPointer(bo->getLHS()) && ExprIsPointer(bo->getRHS()))
// cout << bo->getType().getAsString() << endl;
// Retrieve the location and the operator of the expression
string binary_operator = static_cast<string>(bo->getOpcodeStr());
SourceLocation start_loc = bo->getOperatorLoc();
// SourceLocation end_loc = src_mgr_.translateLineCol(
// src_mgr_.getMainFileID(),
// GetLineNumber(src_mgr_, start_loc),
// GetColumnNumber(src_mgr_, start_loc) + binary_operator.length());
// Certain mutations are NOT syntactically correct for left side of
// assignment. Store location for prevention of generating
// uncompilable mutants.
if (bo->isAssignmentOp())
{
stmt_context_.setLhsOfAssignmentRange(
new SourceRange(bo->getLHS()->getBeginLoc(), start_loc));
}
// Setting up for prevent redundant VTWD mutants
// if A and B are both scalar reference then
// (A+B) should only be mutated to (A+B+1),
// not both (A+B+1) and (A+1+B).
// Store the name of A so that MUSIC do not mutate it.
if (bo->isAdditiveOp())
CollectNonVtwdMutatableScalarRef(e, true);
// In an expression PTR+<expr> or PTR-<EXPR>,
// right hand side <expr> should not be floating
if (bo->getOpcode() == BO_Add || bo->getOpcode() == BO_Sub ||
bo->getOpcode() == BO_AddAssign || bo->getOpcode() == BO_SubAssign)
{
if ((ExprIsPointer(bo->getLHS()->IgnoreImpCasts()) ||
ExprIsArray(bo->getLHS()->IgnoreImpCasts())) &&
!stmt_context_.IsInNonFloatingExprRange(e))
stmt_context_.setNonFloatingExprRange(new SourceRange(
bo->getRHS()->getBeginLoc(),
GetEndLocOfExpr(bo->getRHS()->IgnoreImpCasts(), comp_inst_)));
}
// cout << "cp" << endl;
// cout << OperatorIsShiftAssignment(bo) << endl;
// cout << (binary_operator.compare("%") == 0) << endl;
// cout << bo->isBitwiseOp() << endl;
// cout << bo->isShiftOp() << endl;
// cout << (bo->getOpcode() == BO_RemAssign) << endl;
// cout << OperatorIsBitwiseAssignment(bo) << endl;
// cout << bo->isShiftAssignOp() << endl;
// Modulo, shift and bitwise expressions' values are integral,
// and they also only take integral operands.
// So OCOR should not mutate any cast inside these expr to float type
if (binary_operator.compare("%") == 0 || bo->isBitwiseOp() ||
bo->isShiftOp() || bo->getOpcode() == BO_RemAssign ||
OperatorIsBitwiseAssignment(bo) || bo->isShiftAssignOp())
{
// cout << "cp2" << endl;
// Setting up for blocking uncompilable mutants for OCOR
if (!stmt_context_.IsInNonFloatingExprRange(e))
{
// cout << "cp3" << endl;
stmt_context_.setNonFloatingExprRange(new SourceRange(
bo->getBeginLoc(), GetEndLocOfExpr(e, comp_inst_)));
// PrintRange(src_mgr_, *stmt_context_.non_floating_expr_range_);
}
}
}
bool MusicASTVisitor::ValidateSourceRange(SourceLocation &start_loc, SourceLocation &end_loc)
{
// I forget the reason why ...
// if (start_loc.isMacroID() && end_loc.isMacroID())
// return false;
// cout << "checking\n";
// PrintLocation(src_mgr_, start_loc);
// PrintLocation(src_mgr_, end_loc);
if (start_loc.isInvalid() || end_loc.isInvalid())
return false;
// if (!src_mgr_.isInFileID(start_loc, src_mgr_.getMainFileID()) &&
// !src_mgr_.isInFileID(end_loc, src_mgr_.getMainFileID()))
// return false;
// cout << "MusicASTVisitor cp1\n";
// cout << start_loc.printToString(src_mgr_) << endl;
// cout << end_loc.printToString(src_mgr_) << endl;
// cout << src_mgr_.isInFileID(start_loc, src_mgr_.getMainFileID()) << endl;
// cout << src_mgr_.isInFileID(end_loc, src_mgr_.getMainFileID()) << endl;
// Skip nodes that are not in the to-be-mutated file.
if (src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(start_loc).getHashValue() &&
src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(end_loc).getHashValue())
return false;
// cout << "cp2\n";
if (start_loc.isMacroID())
{
/* THIS PART WORKS FOR CLANG 6.0.1 */
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(start_loc);
// start_loc = expansion_range.first;
/*=================================*/
/* THIS PART WORKS FOR CLANG 7.0.1 */
CharSourceRange expansion_range =
rewriter_.getSourceMgr().getImmediateExpansionRange(start_loc);
start_loc = expansion_range.getBegin();
/*=================================*/
}
// cout << "cp2\n";
if (end_loc.isMacroID())
{
/* THIS PART WORKS FOR CLANG 6.0.1 */
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(end_loc);
// end_loc = expansion_range.second;
/*=================================*/
/* THIS PART WORKS FOR CLANG 7.0.1 */
CharSourceRange expansion_range =
rewriter_.getSourceMgr().getImmediateExpansionRange(end_loc);
end_loc = expansion_range.getEnd();
/*=================================*/
end_loc = Lexer::getLocForEndOfToken(
src_mgr_.getExpansionLoc(end_loc), 0, src_mgr_, comp_inst_->getLangOpts());
// Skipping whitespaces (if any)
while (*(src_mgr_.getCharacterData(end_loc)) == ' ')
end_loc = end_loc.getLocWithOffset(1);
// Return if macro is variable-typed.
if (*(src_mgr_.getCharacterData(end_loc)) != '(')
return true;
// Find the closing bracket of this function-typed macro
int parenthesis_counter = 1;
end_loc = end_loc.getLocWithOffset(1);
while (parenthesis_counter != 0)
{
if (*(src_mgr_.getCharacterData(end_loc)) == '(')
parenthesis_counter++;
if (*(src_mgr_.getCharacterData(end_loc)) == ')')
parenthesis_counter--;
end_loc = end_loc.getLocWithOffset(1);
}
}
// cout << "cp3\n";
return true;
}
bool MusicASTVisitor::VisitStmt(clang::Stmt *s)
{
// cout << "VisitStmt\n";
SourceLocation start_loc = s->getBeginLoc();
SourceLocation end_loc = s->getEndLoc();
SourceLocation start_spelling_loc = src_mgr_.getSpellingLoc(start_loc);
SourceLocation end_spelling_loc = src_mgr_.getSpellingLoc(end_loc);
if (start_loc.isMacroID() && end_loc.isMacroID())
return true;
if (!ValidateSourceRange(start_loc, end_loc))
return true;
// Skip nodes that are not in the to-be-mutated file.
// if (src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(start_loc).getHashValue() &&
// src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(end_loc).getHashValue())
// return true;
// if (start_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(start_loc);
// start_loc = expansion_range.first;
// }
// if (end_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(end_loc);
// end_loc = expansion_range.first;
// }
// cout << "VisitStmt\n" << ConvertToString(s, comp_inst_->getLangOpts()) << endl;
// PrintLocation(src_mgr_, start_loc);
// start_loc.dump(src_mgr_);
// cout << "we here boys\n";
//============================================================================
// set up Proteum-style line number
// COMMENTED OUT FOR CAUSING ERROR IN MUTATING MARK.C OF VIM V5.3
/*if (GetLineNumber(src_mgr_, start_loc) > proteumstyle_stmt_end_line_num_)
{
stmt_context_.setProteumStyleLineNum(GetLineNumber(
src_mgr_, start_loc));
if (isa<IfStmt>(s) || isa<WhileStmt>(s) || isa<SwitchStmt>(s))
{
SourceLocation end_loc_of_stmt = end_loc;
if (IfStmt *is = dyn_cast<IfStmt>(s))
end_loc_of_stmt = is->getCond()->getEndLoc();
else if (WhileStmt *ws = dyn_cast<WhileStmt>(s))
end_loc_of_stmt = ws->getCond()->getEndLoc();
else if (SwitchStmt *ss = dyn_cast<SwitchStmt>(s))
end_loc_of_stmt = ss->getCond()->getEndLoc();
while (*(src_mgr_.getCharacterData(end_loc_of_stmt)) != '\n' &&
*(src_mgr_.getCharacterData(end_loc_of_stmt)) != '{')
end_loc_of_stmt = end_loc_of_stmt.getLocWithOffset(1);
proteumstyle_stmt_end_line_num_ = GetLineNumber(src_mgr_, end_loc_of_stmt);
}
else if (isa<CompoundStmt>(s) || isa<LabelStmt>(s) || isa<DoStmt>(s) ||
isa<SwitchCase>(s) || isa<ForStmt>(s))
proteumstyle_stmt_end_line_num_ = stmt_context_.getProteumStyleLineNum();
else
proteumstyle_stmt_end_line_num_ = GetLineNumber(src_mgr_, end_loc);
}*/
//============================================================================
if (stmt_context_.IsInArrayDeclSize() &&
((!start_loc.isMacroID() && !LocationIsInRange(start_loc, *array_decl_range_)) ||
(!end_loc.isMacroID() && !LocationIsInRange(end_loc, *array_decl_range_))))
{
// cout << "out of array_decl_range_\n";
// PrintLocation(src_mgr_, start_loc);
stmt_context_.setIsInArrayDeclSize(false);
}
// cout << "array decl size is not a problem\n";
if (isa<ForStmt>(s))
scope_list_.push_back(SourceRange(start_loc, end_loc));
if (isa<ForStmt>(s) || isa<WhileStmt>(s) || isa<DoStmt>(s))
{
loop_scope_list_.push_back(
make_pair(s, SourceRange(start_loc, end_loc)));
}
// cout << "loop is not a problem\n";
if (isa<ReturnStmt>(s))
{
stmt_context_.last_return_statement_line_num_ = src_mgr_.getExpansionLineNumber(start_loc);
}
// cout << "return is not a problem\n";
for (auto mutant_operator: stmt_mutant_operator_list_)
{
// cout << mutant_operator->getName() << " mutating\n";
if (mutant_operator->IsMutationTarget(s, &context_))
mutant_operator->Mutate(s, &context_);
// cout << "DONE\n";
}
return true;
}
bool MusicASTVisitor::VisitCompoundStmt(clang::CompoundStmt *c)
{
// cout << "VisitCompoundStmt\n";
// SourceLocation start_spelling_loc = \
// src_mgr_.getSpellingLoc(c->getBeginLoc());
// SourceLocation end_spelling_loc = \
// src_mgr_.getSpellingLoc(c->getEndLoc());
SourceLocation start_loc = c->getBeginLoc();
SourceLocation end_loc = c->getEndLoc();
if (!ValidateSourceRange(start_loc, end_loc))
return true;
// Skip nodes that are not in the to-be-mutated file.
// if (src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(c->getBeginLoc()).getHashValue() &&
// src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(c->getEndLoc()).getHashValue())
// return true;
// if (start_loc.isMacroID() && end_loc.isMacroID())
// return true;
// if (start_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(start_loc);
// start_loc = expansion_range.first;
// }
// if (end_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(end_loc);
// end_loc = expansion_range.first;
// }
/* This expr is not written inside current target file */
// if (src_mgr_.getFileID(start_spelling_loc) != src_mgr_.getMainFileID() &&
// src_mgr_.getFileID(end_spelling_loc) != src_mgr_.getMainFileID())
// {
// return true;
// }
// cout << "VisitCompoundStmt called\n";
// entering a new scope
scope_list_.push_back(SourceRange(start_loc, end_loc));
return true;
}
bool MusicASTVisitor::VisitSwitchStmt(clang::SwitchStmt *ss)
{
// cout << "VisitSwitchStmt\n";
SourceLocation start_loc = ss->getBeginLoc();
SourceLocation end_loc = ss->getEndLoc();
if (!ValidateSourceRange(start_loc, end_loc))
return true;
// Skip nodes that are not in the to-be-mutated file.
// if (src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(ss->getBeginLoc()).getHashValue() &&
// src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(ss->getEndLoc()).getHashValue())
// return true;
// SourceLocation start_spelling_loc = \
// src_mgr_.getSpellingLoc(ss->getBeginLoc());
// SourceLocation end_spelling_loc = \
// src_mgr_.getSpellingLoc(ss->getEndLoc());
// if (ss->getBeginLoc().isMacroID() && ss->getEndLoc().isMacroID())
// return true;
/* This expr is not written inside current target file */
// if (src_mgr_.getFileID(start_spelling_loc) != src_mgr_.getMainFileID() &&
// src_mgr_.getFileID(end_spelling_loc) != src_mgr_.getMainFileID())
// {
// return true;
// }
// cout << "VisitSwitchStmt called\n";
stmt_context_.setSwitchStmtConditionRange(
new SourceRange(ss->getSwitchLoc(), ss->getBody()->getBeginLoc()));
// remove switch statements that are already passed
while (!switchstmt_info_list_.empty() &&
!LocationIsInRange(
ss->getBeginLoc(), switchstmt_info_list_.back().first))
switchstmt_info_list_.pop_back();
// cout << "done removing passed switch stmt\n";
vector<string> case_value_list;
SwitchCase *sc = ss->getSwitchCaseList();
// collect all case values' strings
while (sc != nullptr)
{
// cout << "retrieving " << ConvertToString(sc, comp_inst_->getLangOpts()) << endl;
if (isa<DefaultStmt>(sc))
{
sc = sc->getNextSwitchCase();
continue;
}
// cout << "not default\n";
CaseStmt *cs = dyn_cast<CaseStmt>(sc);
if (!cs)
{
cout << "cannot cast to CaseStmt for " << ConvertToString(sc, comp_inst_->getLangOpts()) << endl;
exit(1);
}
string case_value{ConvertToString(cs->getLHS(), comp_inst_->getLangOpts())};
// remove whitespaces at the beginning and end_loc of retrieved string
case_value = TrimBeginningAndEndingWhitespace(case_value);
ConvertConstIntExprToIntString(cs->getLHS(), comp_inst_, case_value);
case_value_list.push_back(case_value);
sc = sc->getNextSwitchCase();
}
switchstmt_info_list_.push_back(
make_pair(SourceRange(start_loc, end_loc),
case_value_list));
return true;
}
bool MusicASTVisitor::VisitSwitchCase(clang::SwitchCase *sc)
{
// cout << "VisitSwitchCase\n";
// Skip nodes that are not in the to-be-mutated file.
// if (src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(sc->getBeginLoc()).getHashValue() &&
// src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(sc->getEndLoc()).getHashValue())
// return true;
// SourceLocation start_spelling_loc = \
// src_mgr_.getSpellingLoc(sc->getBeginLoc());
// SourceLocation end_spelling_loc = \
// src_mgr_.getSpellingLoc(sc->getEndLoc());
SourceLocation start_loc = sc->getBeginLoc();
SourceLocation end_loc = sc->getEndLoc();
if (!ValidateSourceRange(start_loc, end_loc))
return true;
// if (start_loc.isMacroID() && end_loc.isMacroID())
// return true;
// if (start_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(start_loc);
// start_loc = expansion_range.first;
// }
// if (end_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(end_loc);
// end_loc = expansion_range.first;
// }
/* This expr is not written inside current target file */
// if (src_mgr_.getFileID(start_spelling_loc) != src_mgr_.getMainFileID() &&
// src_mgr_.getFileID(end_spelling_loc) != src_mgr_.getMainFileID())
// {
// return true;
// }
stmt_context_.setSwitchCaseRange(
new SourceRange(start_loc, sc->getColonLoc()));
// remove switch statements that are already passed
while (!switchstmt_info_list_.empty() &&
!LocationIsInRange(
sc->getBeginLoc(), switchstmt_info_list_.back().first))
switchstmt_info_list_.pop_back();
return true;
}
bool MusicASTVisitor::VisitExpr(clang::Expr *e)
{
// cout << "VisitExpr\n";
// Skip nodes that are not in the to-be-mutated file.
// if (src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(e->getBeginLoc()).getHashValue() &&
// src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(e->getEndLoc()).getHashValue())
// return true;
// cout << "VisitExpr\n" << ConvertToString(e, comp_inst_->getLangOpts()) << endl;
// PrintLocation(src_mgr_, e->getBeginLoc());
SourceLocation start_loc = e->getBeginLoc();
SourceLocation end_loc = e->getEndLoc();
// cout << "cp1\n";
if (!ValidateSourceRange(start_loc, end_loc))
return true;
// cout << "cp2\n";
// if (start_loc.isMacroID() && end_loc.isMacroID())
// return true;
// if (start_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(start_loc);
// start_loc = expansion_range.first;
// }
// if (end_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(end_loc);
// end_loc = expansion_range.first;
// }
// Do not mutate or consider anything inside a typedef definition
if (stmt_context_.IsInTypedefRange(e))
return true;
// cout << "cp3\n";
if (StmtExpr *se = dyn_cast<StmtExpr>(e))
{
// set boolean variable signals following stmt are inside stmt expr
stmt_context_.setIsInStmtExpr(true);
}
else if (ArraySubscriptExpr *ase = dyn_cast<ArraySubscriptExpr>(e))
{
SourceLocation start_loc = ase->getBeginLoc();
SourceLocation end_loc = TryGetEndLocAfterBracketOrSemicolon(ase->getEndLoc(), comp_inst_);
stmt_context_.setArraySubscriptRange(new SourceRange(start_loc, end_loc));
}
else if (UnaryOperator *uo = dyn_cast<UnaryOperator>(e))
HandleUnaryOperatorExpr(uo);
else if (BinaryOperator *bo = dyn_cast<BinaryOperator>(e))
HandleBinaryOperatorExpr(e);
// cout << "cp4\n";
for (auto mutant_operator: expr_mutant_operator_list_)
{
// cout << mutant_operator->getName() << " mutating\n";
if (mutant_operator->IsMutationTarget(e, &context_))
mutant_operator->Mutate(e, &context_);
// cout << "DONE\n";
}
// cout << "cp5\n";
return true;
}
bool MusicASTVisitor::VisitEnumDecl(clang::EnumDecl *ed)
{
// cout << "VisitEnumDecl\n";
SourceLocation start_loc = ed->getBeginLoc();
SourceLocation end_loc = ed->getEndLoc();
// Skip nodes that are not in the to-be-mutated file.
if (start_loc.isInvalid() || end_loc.isInvalid())
return true;
// if (!src_mgr_.isInFileID(start_loc, src_mgr_.getMainFileID()) &&
// !src_mgr_.isInFileID(end_loc, src_mgr_.getMainFileID()))
// return false;
// cout << "MusicASTVisitor cp1\n";
// cout << start_loc.printToString(src_mgr_) << endl;
// cout << end_loc.printToString(src_mgr_) << endl;
// cout << src_mgr_.isInFileID(start_loc, src_mgr_.getMainFileID()) << endl;
// cout << src_mgr_.isInFileID(end_loc, src_mgr_.getMainFileID()) << endl;
if (src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(start_loc).getHashValue() &&
src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(end_loc).getHashValue())
return true;
// cout << "cp2\n";
stmt_context_.setIsInEnumDecl(true);
return true;
}
bool MusicASTVisitor::VisitTypedefDecl(clang::TypedefDecl *td)
{
// cout << "VisitTypedefDecl\n";
// Skip nodes that are not in the to-be-mutated file.
// if (src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(td->getBeginLoc()).getHashValue() &&
// src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(td->getEndLoc()).getHashValue())
// return true;
SourceLocation start_loc = td->getBeginLoc();
SourceLocation end_loc = td->getEndLoc();
if (!ValidateSourceRange(start_loc, end_loc))
return true;
// if (start_loc.isMacroID() && end_loc.isMacroID())
// return true;
// if (start_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(start_loc);
// start_loc = expansion_range.first;
// }
// if (end_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(end_loc);
// end_loc = expansion_range.first;
// }
stmt_context_.setTypedefDeclRange(new SourceRange(start_loc, end_loc));
return true;
}
bool MusicASTVisitor::VisitFieldDecl(clang::FieldDecl *fd)
{
// cout << "VisitFieldDecl\n";
// Skip nodes that are not in the to-be-mutated file.
// if (src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(fd->getBeginLoc()).getHashValue() &&
// src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(fd->getEndLoc()).getHashValue())
// return true;
SourceLocation start_loc = fd->getBeginLoc();
SourceLocation end_loc = fd->getEndLoc();
if (!ValidateSourceRange(start_loc, end_loc))
return true;
// if (start_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(start_loc);
// start_loc = expansion_range.first;
// }
// if (end_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(end_loc);
// end_loc = expansion_range.first;
// }
stmt_context_.setFieldDeclRange(new SourceRange(start_loc, end_loc));
if (fd->getType().getTypePtr()->isArrayType())
{
if ((!start_loc.isMacroID() && !LocationIsInRange(start_loc, *array_decl_range_)) ||
(!end_loc.isMacroID() && !LocationIsInRange(end_loc, *array_decl_range_)))
{
stmt_context_.setIsInArrayDeclSize(true);
array_decl_range_ = new SourceRange(start_loc, end_loc);
// cout << "setting array_decl_range_ in FieldDecl\n";
// cout << fd->getNameAsString() << endl;
// PrintRange(src_mgr_, *array_decl_range_);
// PrintLocation(src_mgr_, src_mgr_.getSpellingLoc(start_loc));
// cout << src_mgr_.getFileID(start_loc).getHashValue() << endl;
// cout << src_mgr_.getMainFileID().getHashValue() << endl;
}
}
return true;
}
bool MusicASTVisitor::VisitVarDecl(clang::VarDecl *vd)
{
// cout << "VisitVarDecl\n";
// Skip nodes that are not in the to-be-mutated file.
// if (src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(vd->getBeginLoc()).getHashValue() &&
// src_mgr_.getMainFileID().getHashValue() != src_mgr_.getFileID(vd->getEndLoc()).getHashValue())
// return true;
SourceLocation start_loc = vd->getBeginLoc();
SourceLocation end_loc = vd->getEndLoc();
if (!ValidateSourceRange(start_loc, end_loc))
return true;
// if (start_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(start_loc);
// start_loc = expansion_range.first;
// }
// if (end_loc.isMacroID())
// {
// pair<SourceLocation, SourceLocation> expansion_range =
// rewriter_.getSourceMgr().getImmediateExpansionRange(end_loc);
// end_loc = expansion_range.first;
// }
if (vd->hasInit())
{
// cout << "visit scalar var declaration statement at ";
// PrintLocation(src_mgr_, start_loc);
Stmt** init = vd->getInitAddress();
// cout << "init stmt\n" << ConvertToString(*init, comp_inst_->getLangOpts()) << endl;
if (Expr* e = dyn_cast<Expr>(*init))
{
e = e->IgnoreImpCasts();
for (auto mutation_operator: expr_mutant_operator_list_)
{
if (rhs_to_const_mutation_operators.find(mutation_operator->getName()) !=
rhs_to_const_mutation_operators.end())
{
// cout << mutation_operator->IsInitMutationTarget(e, &context_) << endl;
if (mutation_operator->IsInitMutationTarget(e, &context_))
mutation_operator->Mutate(e, &context_);
}
// only mutate local definition to variable
// cannot mutate global definition to variable (any variable is not
// considered constant)
if (!vd->isFileVarDecl())
{
if (rhs_to_var_mutation_operators.find(mutation_operator->getName()) !=
rhs_to_var_mutation_operators.end())
{
// cout << mutation_operator->IsInitMutationTarget(e, &context_) << endl;
if (mutation_operator->IsInitMutationTarget(e, &context_))
mutation_operator->Mutate(e, &context_);
}
}
}
}
}
SourceLocation start_spelling_loc = \
src_mgr_.getSpellingLoc(start_loc);
SourceLocation end_spelling_loc = \
src_mgr_.getSpellingLoc(end_loc);
// if (start_loc.isMacroID() && end_loc.isMacroID())
// return true;
/* This expr is not written inside current target file */
// if (src_mgr_.getFileID(start_spelling_loc) != src_mgr_.getMainFileID() &&
// src_mgr_.getFileID(end_spelling_loc) != src_mgr_.getMainFileID())
// {
// return true;
// }
stmt_context_.setIsInEnumDecl(false);
if (stmt_context_.IsInTypedefRange(start_loc))
return true;
if (LocationIsInRange(start_loc, *functionprototype_range_))
return true;
if (IsVarDeclArray(vd))
{
auto type = vd->getType().getCanonicalType().getTypePtr();
if (auto array_type = dyn_cast_or_null<ConstantArrayType>(type))
{
if ((!start_loc.isMacroID() && !LocationIsInRange(start_loc, *array_decl_range_)) ||
(!end_loc.isMacroID() && !LocationIsInRange(end_loc, *array_decl_range_)))
{
stmt_context_.setIsInArrayDeclSize(true);
array_decl_range_ = new SourceRange(start_loc, end_loc);
}
}
}
return true;
}
bool MusicASTVisitor::VisitFunctionDecl(clang::FunctionDecl *f)
{
// cout << "VisitFunctionDecl\n";
SourceLocation start_loc = f->getBeginLoc();
SourceLocation end_loc = f->getEndLoc();
if (!ValidateSourceRange(start_loc, end_loc))
return true;
// Function with nobody, and function declaration within
// another function is function prototype.
// no global or local variable mutation will be applied here.
if (!f->hasBody() ||
stmt_context_.IsInCurrentlyParsedFunctionRange(start_loc))
{
functionprototype_range_ = new SourceRange(start_loc, end_loc);
}
else
{
string ftn_name{f->getNameAsString()};
cout << "====== entering " << ftn_name << endl;
// cout << "start_loc = "; PrintLocation(src_mgr_, start_loc);
// cout << "end_loc = "; PrintLocation(src_mgr_, end_loc);
// entering a new local scope
scope_list_.clear();
loop_scope_list_.clear();
scope_list_.push_back(SourceRange(start_loc, end_loc));
context_.IncrementFunctionId();
stmt_context_.setIsInEnumDecl(false);
stmt_context_.setCurrentlyParsedFunctionRange(