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2c5dd2dfa3
This PR separates the core cpp packs into `codeql/cpp-queries` and `codeql/cpp-all`. There are very few lines of code changed. Almost all changes are moving files around.
64 lines
1.8 KiB
Plaintext
64 lines
1.8 KiB
Plaintext
/**
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* Provides predicates for finding the smallest element that encloses an expression or statement.
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*/
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import cpp
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/**
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* Gets the enclosing element of statement `s`.
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*/
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cached
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Element stmtEnclosingElement(Stmt s) {
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result.(Function).getEntryPoint() = s or
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result = stmtEnclosingElement(s.getParent()) or
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result = exprEnclosingElement(s.getParent())
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}
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/**
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* Gets the enclosing element of expression `e`.
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*/
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// The `pragma[nomagic]` is a workaround to prevent this cached stage (and all
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// subsequent stages) from being evaluated twice. See QL-888. It has the effect
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// of making the `Conversion` class predicate get the same optimization in all
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// queries.
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pragma[nomagic]
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cached
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Element exprEnclosingElement(Expr e) {
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result = exprEnclosingElement(e.getParent())
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or
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result = stmtEnclosingElement(e.getParent())
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or
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result.(Function) = e.getParent()
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or
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result = exprEnclosingElement(e.(Conversion).getExpr())
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or
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exists(Initializer i |
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i.getExpr() = e and
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if exists(i.getEnclosingStmt())
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then result = stmtEnclosingElement(i.getEnclosingStmt())
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else
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if i.getDeclaration() instanceof Parameter
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then result = i.getDeclaration().(Parameter).getFunction()
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else result = i.getDeclaration()
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)
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or
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exists(Expr anc |
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expr_ancestor(unresolveElement(e), unresolveElement(anc)) and result = exprEnclosingElement(anc)
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)
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or
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exists(Stmt anc |
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expr_ancestor(unresolveElement(e), unresolveElement(anc)) and result = stmtEnclosingElement(anc)
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)
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or
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exists(DeclarationEntry de |
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expr_ancestor(unresolveElement(e), unresolveElement(de)) and
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if exists(DeclStmt ds | de = ds.getADeclarationEntry())
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then
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exists(DeclStmt ds |
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de = ds.getADeclarationEntry() and
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result = stmtEnclosingElement(ds)
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)
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else result = de.getDeclaration()
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)
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}
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