Last change
on this file since 8dc6f84 was
4ec9513,
checked in by Andrew Beach <ajbeach@…>, 2 years ago
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Converted validate C, including adding DimensionExpr? to the new ast.
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-
Property mode set to
100644
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File size:
1.4 KB
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Rev | Line | |
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[4ec9513] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2018 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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| 7 | // ReturnCheck.cpp -- Run simple (non-typed) checks on return statements. |
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| 8 | // |
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| 9 | // Author : Andrew Beach |
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| 10 | // Created On : Fri Mar 18 14:07:00 2022 |
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| 11 | // Last Modified By : Andrew Beach |
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| 12 | // Last Modified On : Fri Mar 18 14:26:00 2022 |
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| 13 | // Update Count : 0 |
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| 14 | // |
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| 15 | |
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| 16 | #include "ReturnCheck.hpp" |
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| 17 | |
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| 18 | #include "AST/Decl.hpp" |
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| 19 | #include "AST/Pass.hpp" |
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| 20 | #include "AST/Stmt.hpp" |
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| 21 | #include "AST/TranslationUnit.hpp" |
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| 22 | |
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| 23 | namespace Validate { |
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| 24 | |
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| 25 | namespace { |
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| 26 | |
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| 27 | struct ReturnCore : public ast::WithGuards { |
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| 28 | bool inVoidFunction = false; |
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| 29 | |
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| 30 | void previsit( const ast::FunctionDecl * decl ) { |
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| 31 | GuardValue( inVoidFunction ) = (0 == decl->returns.size()); |
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| 32 | } |
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| 33 | |
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| 34 | void previsit( const ast::ReturnStmt * stmt ) { |
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| 35 | // The only definite error case is an empty return on a non-void |
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| 36 | // functions. Everything else requires resolution. (You can have |
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| 37 | // a void expression in a return statement. |
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| 38 | if ( !stmt->expr && !inVoidFunction ) { |
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| 39 | SemanticError( stmt, "Non-void function returns no values: " ); |
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| 40 | } |
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| 41 | } |
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| 42 | }; |
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| 43 | |
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| 44 | } // namespace |
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| 45 | |
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| 46 | void checkReturnStatements( ast::TranslationUnit & translationUnit ) { |
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| 47 | ast::Pass<ReturnCore>::run( translationUnit ); |
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| 48 | } |
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| 49 | |
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| 50 | } // namespace Validate |
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| 51 | |
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| 52 | // Local Variables: // |
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| 53 | // tab-width: 4 // |
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| 54 | // mode: c++ // |
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| 55 | // compile-command: "make install" // |
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| 56 | // End: // |
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