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e007de3b9a
with other diagnostic mapping. In the new scheme, -Wfoo or -Wno-foo or -Werror=foo all override the -pedantic options, and __extension__ robustly silences all extension diagnostics in their scope. An added bonus of this change is that MAP_DEFAULT goes away, meaning that per-diagnostic mapping information can now be stored in 2 bits, doubling the density of the Diagnostic::DiagMapping array. This also substantially simplifies Diagnostic::getDiagnosticLevel. OTOH, this temporarily introduces some "macro intensive" code in Diagnostic.cpp. This will be addressed in a later patch. llvm-svn: 69154
41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
//===--- ExtensionRAIIObject.h - Use RAII for __extension__ -----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines and implements the ExtensionRAIIObject class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_PARSE_EXTENSION_RAII_OBJECT_H
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#define LLVM_CLANG_PARSE_EXTENSION_RAII_OBJECT_H
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#include "clang/Parse/ParseDiagnostic.h"
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namespace clang {
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/// ExtensionRAIIObject - This saves the state of extension warnings when
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/// constructed and disables them. When destructed, it restores them back to
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/// the way they used to be. This is used to handle __extension__ in the
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/// parser.
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class ExtensionRAIIObject {
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void operator=(const ExtensionRAIIObject &); // DO NOT IMPLEMENT
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ExtensionRAIIObject(const ExtensionRAIIObject&); // DO NOT IMPLEMENT
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Diagnostic &Diags;
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public:
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ExtensionRAIIObject(Diagnostic &diags) : Diags(diags) {
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Diags.IncrementAllExtensionsSilenced();
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}
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~ExtensionRAIIObject() {
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Diags.DecrementAllExtensionsSilenced();
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}
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};
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}
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#endif
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