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24 lines
754 B
Plaintext
24 lines
754 B
Plaintext
/**
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* @name Loop body executes at most once
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* @description A loop that executes at most once is confusing and should be rewritten
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* as a conditional.
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* @kind problem
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* @problem.severity recommendation
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* @id js/single-run-loop
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* @tags readability
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* @precision high
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*/
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import javascript
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import semmle.javascript.RestrictedLocations
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import semmle.javascript.frameworks.Emscripten
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from LoopStmt l, BasicBlock body
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where
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body = l.getBody().getBasicBlock() and
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not body.getASuccessor+() = body and
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not l instanceof EnhancedForLoop and
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// Emscripten generates lots of `do { ... } while(0);` loops, so exclude
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not l.getTopLevel() instanceof EmscriptenGeneratedToplevel
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select l.(FirstLineOf), "This loop executes at most once."
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