void GlobalsCollector::visit(ast::IfExp & e) { e.getTest().accept(*this); e.getThen().accept(*this); if (e.hasElse()) { e.getElse().accept(*this); } }
void SLintVisitor::visit(const ast::IfExp & e) { auto range = preCheck(e); e.getTest().accept(*this); e.getThen().accept(*this); if (e.hasElse()) { e.getElse().accept(*this); } postCheck(e, range); }
void InstrumentVisitor::visit(ast::IfExp & e) { ++branchesCount; e.getThen().accept(*this); if (e.hasElse()) { ++branchesCount; if (e.getElse().isCommentExp()) { cover.add(macro, &e.getElse()); } else { e.getElse().accept(*this); } } }
void AnalysisVisitor::visit(ast::IfExp & e) { logger.log(L"IfExp", e.getLocation()); ast::Exp * shortcutExp = nullptr; // we apply the ConstantVisitor e.getTest().accept(cv); ast::Exp & test = e.getTest(); if (cv.getResult() && test.isConstExp()) { e.accept(cv); // we have a constant ! ast::ConstExp & ce = static_cast<ast::ConstExp &>(test); types::InternalType * pIT = ce.getConstant(); if (!pIT) { test.accept(cv.getExec()); pIT = ce.getConstant(); } if (pIT) { const bool result = pIT->isTrue(); if (result) { shortcutExp = &e.getThen(); e.getExps()[1] = nullptr; } else { shortcutExp = &e.getElse(); e.getExps()[2] = nullptr; } } } else { ast::Exp * val = nullptr; bool isEq; if (test.isOpExp()) { ast::OpExp & oe = static_cast<ast::OpExp &>(test); isEq = oe.getOper() == ast::OpExp::eq; if (isEq || oe.getOper() == ast::OpExp::ne) { if (oe.getLeft().isDoubleExp()) { ast::DoubleExp & de = static_cast<ast::DoubleExp &>(oe.getLeft()); if (types::InternalType * pIT = de.getConstant()) { if (pIT->isDouble()) { types::Double * pDbl = static_cast<types::Double *>(pIT); if (pDbl->isEmpty()) { val = &oe.getRight(); } } } } else if (oe.getRight().isDoubleExp()) { ast::DoubleExp & de = static_cast<ast::DoubleExp &>(oe.getRight()); if (types::InternalType * pIT = de.getConstant()) { if (pIT->isDouble()) { types::Double * pDbl = static_cast<types::Double *>(pIT); if (pDbl->isEmpty()) { val = &oe.getLeft(); } } } } } } else { ast::CallExp * ce = nullptr; if (test.isNotExp()) { ast::NotExp & ne = static_cast<ast::NotExp &>(test); if (ne.getExp().isCallExp()) { ce = &static_cast<ast::CallExp &>(ne.getExp()); isEq = false; } } else if (test.isCallExp()) { ce = &static_cast<ast::CallExp &>(test); isEq = true; } if (ce && ce->getName().isSimpleVar()) { ast::SimpleVar & var = static_cast<ast::SimpleVar &>(ce->getName()); const symbol::Symbol & sym = var.getSymbol(); const std::wstring & name = sym.getName(); if (name == L"isempty" && getCM().checkGlobalConstant(sym)) { const ast::exps_t args = ce->getArgs(); if (args.size() == 1) { val = args.front(); } } } } if (val) { // test is something like val == [], isempty(val), val ~= [], ~isempty(val) val->accept(*this); Result & res = getResult(); TIType & ty = res.getType(); if ((ty.ismatrix() && ty.isscalar()) || (getCM().check(ConstraintManager::STRICT_POSITIVE, ty.rows.getValue()) || getCM().check(ConstraintManager::STRICT_POSITIVE, ty.cols.getValue()))) { if (isEq) { shortcutExp = &e.getElse(); e.getExps()[2] = nullptr; } else { shortcutExp = &e.getThen(); e.getExps()[1] = nullptr; } } } } if (shortcutExp) { e.replace(shortcutExp); shortcutExp->accept(*this); } else { dm.addBlock(Block::EXCLUSIVE, &e); e.getTest().accept(*this); dm.releaseTmp(getResult().getTempId()); dm.addBlock(Block::NORMAL, &e.getThen()); e.getThen().accept(*this); dm.finalizeBlock(); dm.addBlock(Block::NORMAL, e.hasElse() ? &e.getElse() : nullptr); if (e.hasElse()) { e.getElse().accept(*this); } dm.finalizeBlock(); dm.finalizeBlock(); } }