| 46 | } |
| 47 | |
| 48 | bool exprReturns ( ExpressionPtr expr ) { |
| 49 | if ( expr->rtti_isReturn() ) { |
| 50 | return true; |
| 51 | } else if ( expr->rtti_isBlock() ) { |
| 52 | auto block = static_cast<ExprBlock*>(expr); |
| 53 | if ( hasLabels(block) ) { |
| 54 | // NOTE: block with labels assumed to always return for now. real world analysis is hard |
| 55 | return true; |
| 56 | } else { |
| 57 | for ( auto & be : block->list ) { |
| 58 | if ( be->rtti_isBreak() || be->rtti_isContinue() || be->rtti_isGoto() ) { |
| 59 | break; |
| 60 | } |
| 61 | if ( exprReturns(be) ) { |
| 62 | return true; |
| 63 | } |
| 64 | } |
| 65 | } |
| 66 | } else if ( expr->rtti_isIfThenElse() ) { |
| 67 | auto ite = static_cast<ExprIfThenElse*>(expr); |
| 68 | if ( ite->if_false ) { |
| 69 | return exprReturns(ite->if_true) && exprReturns(ite->if_false); |
| 70 | } |
| 71 | } else if ( expr->rtti_isWith() ) { |
| 72 | auto wth = static_cast<ExprWith*>(expr); |
| 73 | return exprReturns(wth->body); |
| 74 | } else if ( expr->rtti_isWhile() ) { |
| 75 | auto wh = static_cast<ExprWhile*>(expr); |
| 76 | return exprReturns(wh->body); |
| 77 | } else if ( expr->rtti_isFor() ) { |
| 78 | auto fr = static_cast<ExprFor*>(expr); |
| 79 | return exprReturns(fr->body); |
| 80 | } else if ( expr->rtti_isUnsafe() ) { |
| 81 | auto us = static_cast<ExprUnsafe*>(expr); |
| 82 | return exprReturns(us->body); |
| 83 | } |
| 84 | return false; |
| 85 | } |
| 86 | |
| 87 | bool exprReturnsOrBreaks ( ExpressionPtr expr ) { |
| 88 | if ( expr->rtti_isReturn() ) { |
no test coverage detected