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Added support for GCC-style statement expressions in source-level CFGs. 

llvm-svn: 41549
This commit is contained in:
Ted Kremenek 2007-08-28 18:30:10 +00:00
parent 1c1f932433
commit 105efce68f
1 changed files with 11 additions and 0 deletions
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11
clang/AST/CFG.cpp
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@ -102,6 +102,7 @@ private:
CFGBlock* WalkAST(Stmt* S, bool AlwaysAddStmt); CFGBlock* WalkAST(Stmt* S, bool AlwaysAddStmt);
CFGBlock* WalkAST_VisitChildren(Stmt* S); CFGBlock* WalkAST_VisitChildren(Stmt* S);
CFGBlock* WalkAST_VisitVarDecl(VarDecl* D); CFGBlock* WalkAST_VisitVarDecl(VarDecl* D);
CFGBlock* WalkAST_VisitStmtExpr(StmtExpr* S);
void FinishBlock(CFGBlock* B); void FinishBlock(CFGBlock* B);
}; };
@ -218,6 +219,9 @@ CFGBlock* CFGBuilder::WalkAST(Stmt* S, bool AlwaysAddStmt = false) {
return WalkAST_VisitVarDecl(V); return WalkAST_VisitVarDecl(V);
} }
else return Block; else return Block;
case Stmt::StmtExprClass:
return WalkAST_VisitStmtExpr(cast<StmtExpr>(S));
case Stmt::BinaryOperatorClass: { case Stmt::BinaryOperatorClass: {
BinaryOperator* B = cast<BinaryOperator>(S); BinaryOperator* B = cast<BinaryOperator>(S);
@ -287,6 +291,13 @@ CFGBlock* CFGBuilder::WalkAST_VisitChildren(Stmt* S) {
return B; return B;
} }
/// WalkAST_VisitStmtExpr - Utility method to handle (nested) statement
/// expressions (a GCC extension).
CFGBlock* CFGBuilder::WalkAST_VisitStmtExpr(StmtExpr* S) {
Block->appendStmt(S);
return VisitCompoundStmt(S->getSubStmt());
}
/// VisitStmt - Handle statements with no branching control flow. /// VisitStmt - Handle statements with no branching control flow.
CFGBlock* CFGBuilder::VisitStmt(Stmt* Statement) { CFGBlock* CFGBuilder::VisitStmt(Stmt* Statement) {
// We cannot assume that we are in the middle of a basic block, since // We cannot assume that we are in the middle of a basic block, since