forked from OSchip/llvm-project
927 lines
29 KiB
C++
927 lines
29 KiB
C++
//===--- ParsePragma.cpp - Language specific pragma parsing ---------------===//
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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 implements the language specific #pragma handlers.
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//
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//===----------------------------------------------------------------------===//
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#include "ParsePragma.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Parse/ParseDiagnostic.h"
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#include "clang/Parse/Parser.h"
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#include "clang/Sema/Scope.h"
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#include "llvm/ADT/StringSwitch.h"
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using namespace clang;
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/// \brief Handle the annotation token produced for #pragma unused(...)
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///
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/// Each annot_pragma_unused is followed by the argument token so e.g.
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/// "#pragma unused(x,y)" becomes:
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/// annot_pragma_unused 'x' annot_pragma_unused 'y'
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void Parser::HandlePragmaUnused() {
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assert(Tok.is(tok::annot_pragma_unused));
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SourceLocation UnusedLoc = ConsumeToken();
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Actions.ActOnPragmaUnused(Tok, getCurScope(), UnusedLoc);
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ConsumeToken(); // The argument token.
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}
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void Parser::HandlePragmaVisibility() {
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assert(Tok.is(tok::annot_pragma_vis));
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const IdentifierInfo *VisType =
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static_cast<IdentifierInfo *>(Tok.getAnnotationValue());
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SourceLocation VisLoc = ConsumeToken();
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Actions.ActOnPragmaVisibility(VisType, VisLoc);
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}
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struct PragmaPackInfo {
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Sema::PragmaPackKind Kind;
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IdentifierInfo *Name;
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Token Alignment;
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SourceLocation LParenLoc;
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SourceLocation RParenLoc;
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};
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void Parser::HandlePragmaPack() {
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assert(Tok.is(tok::annot_pragma_pack));
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PragmaPackInfo *Info =
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static_cast<PragmaPackInfo *>(Tok.getAnnotationValue());
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SourceLocation PragmaLoc = ConsumeToken();
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ExprResult Alignment;
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if (Info->Alignment.is(tok::numeric_constant)) {
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Alignment = Actions.ActOnNumericConstant(Info->Alignment);
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if (Alignment.isInvalid())
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return;
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}
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Actions.ActOnPragmaPack(Info->Kind, Info->Name, Alignment.get(), PragmaLoc,
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Info->LParenLoc, Info->RParenLoc);
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}
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void Parser::HandlePragmaMSStruct() {
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assert(Tok.is(tok::annot_pragma_msstruct));
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Sema::PragmaMSStructKind Kind =
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static_cast<Sema::PragmaMSStructKind>(
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reinterpret_cast<uintptr_t>(Tok.getAnnotationValue()));
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Actions.ActOnPragmaMSStruct(Kind);
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ConsumeToken(); // The annotation token.
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}
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void Parser::HandlePragmaAlign() {
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assert(Tok.is(tok::annot_pragma_align));
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Sema::PragmaOptionsAlignKind Kind =
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static_cast<Sema::PragmaOptionsAlignKind>(
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reinterpret_cast<uintptr_t>(Tok.getAnnotationValue()));
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SourceLocation PragmaLoc = ConsumeToken();
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Actions.ActOnPragmaOptionsAlign(Kind, PragmaLoc);
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}
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void Parser::HandlePragmaWeak() {
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assert(Tok.is(tok::annot_pragma_weak));
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SourceLocation PragmaLoc = ConsumeToken();
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Actions.ActOnPragmaWeakID(Tok.getIdentifierInfo(), PragmaLoc,
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Tok.getLocation());
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ConsumeToken(); // The weak name.
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}
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void Parser::HandlePragmaWeakAlias() {
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assert(Tok.is(tok::annot_pragma_weakalias));
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SourceLocation PragmaLoc = ConsumeToken();
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IdentifierInfo *WeakName = Tok.getIdentifierInfo();
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SourceLocation WeakNameLoc = Tok.getLocation();
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ConsumeToken();
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IdentifierInfo *AliasName = Tok.getIdentifierInfo();
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SourceLocation AliasNameLoc = Tok.getLocation();
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ConsumeToken();
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Actions.ActOnPragmaWeakAlias(WeakName, AliasName, PragmaLoc,
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WeakNameLoc, AliasNameLoc);
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}
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void Parser::HandlePragmaRedefineExtname() {
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assert(Tok.is(tok::annot_pragma_redefine_extname));
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SourceLocation RedefLoc = ConsumeToken();
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IdentifierInfo *RedefName = Tok.getIdentifierInfo();
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SourceLocation RedefNameLoc = Tok.getLocation();
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ConsumeToken();
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IdentifierInfo *AliasName = Tok.getIdentifierInfo();
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SourceLocation AliasNameLoc = Tok.getLocation();
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ConsumeToken();
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Actions.ActOnPragmaRedefineExtname(RedefName, AliasName, RedefLoc,
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RedefNameLoc, AliasNameLoc);
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}
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void Parser::HandlePragmaFPContract() {
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assert(Tok.is(tok::annot_pragma_fp_contract));
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tok::OnOffSwitch OOS =
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static_cast<tok::OnOffSwitch>(
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reinterpret_cast<uintptr_t>(Tok.getAnnotationValue()));
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Actions.ActOnPragmaFPContract(OOS);
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ConsumeToken(); // The annotation token.
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}
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StmtResult Parser::HandlePragmaCaptured()
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{
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assert(Tok.is(tok::annot_pragma_captured));
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ConsumeToken();
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if (Tok.isNot(tok::l_brace)) {
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PP.Diag(Tok, diag::err_expected_lbrace);
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return StmtError();
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}
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SourceLocation Loc = Tok.getLocation();
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ParseScope CapturedRegionScope(this, Scope::FnScope | Scope::DeclScope);
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Actions.ActOnCapturedRegionStart(Loc, getCurScope(), CR_Default,
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/*NumParams=*/1);
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StmtResult R = ParseCompoundStatement();
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CapturedRegionScope.Exit();
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if (R.isInvalid()) {
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Actions.ActOnCapturedRegionError();
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return StmtError();
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}
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return Actions.ActOnCapturedRegionEnd(R.get());
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}
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namespace {
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typedef llvm::PointerIntPair<IdentifierInfo *, 1, bool> OpenCLExtData;
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}
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void Parser::HandlePragmaOpenCLExtension() {
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assert(Tok.is(tok::annot_pragma_opencl_extension));
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OpenCLExtData data =
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OpenCLExtData::getFromOpaqueValue(Tok.getAnnotationValue());
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unsigned state = data.getInt();
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IdentifierInfo *ename = data.getPointer();
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SourceLocation NameLoc = Tok.getLocation();
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ConsumeToken(); // The annotation token.
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OpenCLOptions &f = Actions.getOpenCLOptions();
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// OpenCL 1.1 9.1: "The all variant sets the behavior for all extensions,
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// overriding all previously issued extension directives, but only if the
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// behavior is set to disable."
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if (state == 0 && ename->isStr("all")) {
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#define OPENCLEXT(nm) f.nm = 0;
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#include "clang/Basic/OpenCLExtensions.def"
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}
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#define OPENCLEXT(nm) else if (ename->isStr(#nm)) { f.nm = state; }
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#include "clang/Basic/OpenCLExtensions.def"
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else {
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PP.Diag(NameLoc, diag::warn_pragma_unknown_extension) << ename;
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return;
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}
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}
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// #pragma GCC visibility comes in two variants:
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// 'push' '(' [visibility] ')'
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// 'pop'
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void PragmaGCCVisibilityHandler::HandlePragma(Preprocessor &PP,
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PragmaIntroducerKind Introducer,
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Token &VisTok) {
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SourceLocation VisLoc = VisTok.getLocation();
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Token Tok;
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PP.LexUnexpandedToken(Tok);
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const IdentifierInfo *PushPop = Tok.getIdentifierInfo();
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const IdentifierInfo *VisType;
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if (PushPop && PushPop->isStr("pop")) {
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VisType = 0;
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} else if (PushPop && PushPop->isStr("push")) {
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PP.LexUnexpandedToken(Tok);
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if (Tok.isNot(tok::l_paren)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_lparen)
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<< "visibility";
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return;
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}
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PP.LexUnexpandedToken(Tok);
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VisType = Tok.getIdentifierInfo();
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if (!VisType) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier)
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<< "visibility";
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return;
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}
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PP.LexUnexpandedToken(Tok);
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if (Tok.isNot(tok::r_paren)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_rparen)
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<< "visibility";
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return;
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}
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} else {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier)
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<< "visibility";
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return;
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}
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PP.LexUnexpandedToken(Tok);
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if (Tok.isNot(tok::eod)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol)
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<< "visibility";
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return;
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}
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Token *Toks = new Token[1];
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Toks[0].startToken();
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Toks[0].setKind(tok::annot_pragma_vis);
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Toks[0].setLocation(VisLoc);
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Toks[0].setAnnotationValue(
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const_cast<void*>(static_cast<const void*>(VisType)));
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PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true,
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/*OwnsTokens=*/true);
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}
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// #pragma pack(...) comes in the following delicious flavors:
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// pack '(' [integer] ')'
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// pack '(' 'show' ')'
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// pack '(' ('push' | 'pop') [',' identifier] [, integer] ')'
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void PragmaPackHandler::HandlePragma(Preprocessor &PP,
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PragmaIntroducerKind Introducer,
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Token &PackTok) {
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SourceLocation PackLoc = PackTok.getLocation();
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Token Tok;
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PP.Lex(Tok);
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if (Tok.isNot(tok::l_paren)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_lparen) << "pack";
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return;
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}
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Sema::PragmaPackKind Kind = Sema::PPK_Default;
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IdentifierInfo *Name = 0;
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Token Alignment;
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Alignment.startToken();
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SourceLocation LParenLoc = Tok.getLocation();
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PP.Lex(Tok);
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if (Tok.is(tok::numeric_constant)) {
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Alignment = Tok;
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PP.Lex(Tok);
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// In MSVC/gcc, #pragma pack(4) sets the alignment without affecting
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// the push/pop stack.
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// In Apple gcc, #pragma pack(4) is equivalent to #pragma pack(push, 4)
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if (PP.getLangOpts().ApplePragmaPack)
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Kind = Sema::PPK_Push;
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} else if (Tok.is(tok::identifier)) {
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const IdentifierInfo *II = Tok.getIdentifierInfo();
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if (II->isStr("show")) {
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Kind = Sema::PPK_Show;
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PP.Lex(Tok);
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} else {
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if (II->isStr("push")) {
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Kind = Sema::PPK_Push;
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} else if (II->isStr("pop")) {
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Kind = Sema::PPK_Pop;
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} else {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_pack_invalid_action);
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return;
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}
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PP.Lex(Tok);
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if (Tok.is(tok::comma)) {
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PP.Lex(Tok);
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if (Tok.is(tok::numeric_constant)) {
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Alignment = Tok;
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PP.Lex(Tok);
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} else if (Tok.is(tok::identifier)) {
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Name = Tok.getIdentifierInfo();
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PP.Lex(Tok);
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if (Tok.is(tok::comma)) {
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PP.Lex(Tok);
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if (Tok.isNot(tok::numeric_constant)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_pack_malformed);
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return;
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}
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Alignment = Tok;
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PP.Lex(Tok);
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}
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} else {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_pack_malformed);
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return;
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}
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}
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}
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} else if (PP.getLangOpts().ApplePragmaPack) {
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// In MSVC/gcc, #pragma pack() resets the alignment without affecting
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// the push/pop stack.
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// In Apple gcc #pragma pack() is equivalent to #pragma pack(pop).
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Kind = Sema::PPK_Pop;
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}
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if (Tok.isNot(tok::r_paren)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_rparen) << "pack";
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return;
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}
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SourceLocation RParenLoc = Tok.getLocation();
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PP.Lex(Tok);
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if (Tok.isNot(tok::eod)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) << "pack";
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return;
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}
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PragmaPackInfo *Info =
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(PragmaPackInfo*) PP.getPreprocessorAllocator().Allocate(
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sizeof(PragmaPackInfo), llvm::alignOf<PragmaPackInfo>());
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new (Info) PragmaPackInfo();
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Info->Kind = Kind;
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Info->Name = Name;
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Info->Alignment = Alignment;
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Info->LParenLoc = LParenLoc;
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Info->RParenLoc = RParenLoc;
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Token *Toks =
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(Token*) PP.getPreprocessorAllocator().Allocate(
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sizeof(Token) * 1, llvm::alignOf<Token>());
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new (Toks) Token();
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Toks[0].startToken();
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Toks[0].setKind(tok::annot_pragma_pack);
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Toks[0].setLocation(PackLoc);
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Toks[0].setAnnotationValue(static_cast<void*>(Info));
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PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true,
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/*OwnsTokens=*/false);
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}
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// #pragma ms_struct on
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// #pragma ms_struct off
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void PragmaMSStructHandler::HandlePragma(Preprocessor &PP,
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PragmaIntroducerKind Introducer,
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Token &MSStructTok) {
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Sema::PragmaMSStructKind Kind = Sema::PMSST_OFF;
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Token Tok;
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PP.Lex(Tok);
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if (Tok.isNot(tok::identifier)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_ms_struct);
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return;
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}
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const IdentifierInfo *II = Tok.getIdentifierInfo();
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if (II->isStr("on")) {
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Kind = Sema::PMSST_ON;
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PP.Lex(Tok);
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}
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else if (II->isStr("off") || II->isStr("reset"))
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PP.Lex(Tok);
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else {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_ms_struct);
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return;
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}
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if (Tok.isNot(tok::eod)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol)
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<< "ms_struct";
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return;
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}
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Token *Toks =
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(Token*) PP.getPreprocessorAllocator().Allocate(
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sizeof(Token) * 1, llvm::alignOf<Token>());
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new (Toks) Token();
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Toks[0].startToken();
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Toks[0].setKind(tok::annot_pragma_msstruct);
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Toks[0].setLocation(MSStructTok.getLocation());
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Toks[0].setAnnotationValue(reinterpret_cast<void*>(
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static_cast<uintptr_t>(Kind)));
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PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true,
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/*OwnsTokens=*/false);
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}
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// #pragma 'align' '=' {'native','natural','mac68k','power','reset'}
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// #pragma 'options 'align' '=' {'native','natural','mac68k','power','reset'}
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static void ParseAlignPragma(Preprocessor &PP, Token &FirstTok,
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bool IsOptions) {
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Token Tok;
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if (IsOptions) {
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PP.Lex(Tok);
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if (Tok.isNot(tok::identifier) ||
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!Tok.getIdentifierInfo()->isStr("align")) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_options_expected_align);
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return;
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}
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}
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PP.Lex(Tok);
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if (Tok.isNot(tok::equal)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_align_expected_equal)
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<< IsOptions;
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return;
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}
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PP.Lex(Tok);
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if (Tok.isNot(tok::identifier)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier)
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<< (IsOptions ? "options" : "align");
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return;
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}
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Sema::PragmaOptionsAlignKind Kind = Sema::POAK_Natural;
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const IdentifierInfo *II = Tok.getIdentifierInfo();
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if (II->isStr("native"))
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Kind = Sema::POAK_Native;
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else if (II->isStr("natural"))
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Kind = Sema::POAK_Natural;
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else if (II->isStr("packed"))
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Kind = Sema::POAK_Packed;
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else if (II->isStr("power"))
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Kind = Sema::POAK_Power;
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else if (II->isStr("mac68k"))
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Kind = Sema::POAK_Mac68k;
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else if (II->isStr("reset"))
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Kind = Sema::POAK_Reset;
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else {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_align_invalid_option)
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<< IsOptions;
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return;
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}
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PP.Lex(Tok);
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if (Tok.isNot(tok::eod)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol)
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<< (IsOptions ? "options" : "align");
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return;
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}
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Token *Toks =
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(Token*) PP.getPreprocessorAllocator().Allocate(
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sizeof(Token) * 1, llvm::alignOf<Token>());
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new (Toks) Token();
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Toks[0].startToken();
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Toks[0].setKind(tok::annot_pragma_align);
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Toks[0].setLocation(FirstTok.getLocation());
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Toks[0].setAnnotationValue(reinterpret_cast<void*>(
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static_cast<uintptr_t>(Kind)));
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PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true,
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/*OwnsTokens=*/false);
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}
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void PragmaAlignHandler::HandlePragma(Preprocessor &PP,
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PragmaIntroducerKind Introducer,
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Token &AlignTok) {
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ParseAlignPragma(PP, AlignTok, /*IsOptions=*/false);
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}
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void PragmaOptionsHandler::HandlePragma(Preprocessor &PP,
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PragmaIntroducerKind Introducer,
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Token &OptionsTok) {
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ParseAlignPragma(PP, OptionsTok, /*IsOptions=*/true);
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}
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// #pragma unused(identifier)
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void PragmaUnusedHandler::HandlePragma(Preprocessor &PP,
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PragmaIntroducerKind Introducer,
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Token &UnusedTok) {
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// FIXME: Should we be expanding macros here? My guess is no.
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SourceLocation UnusedLoc = UnusedTok.getLocation();
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// Lex the left '('.
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Token Tok;
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PP.Lex(Tok);
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if (Tok.isNot(tok::l_paren)) {
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PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_lparen) << "unused";
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return;
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}
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// Lex the declaration reference(s).
|
|
SmallVector<Token, 5> Identifiers;
|
|
SourceLocation RParenLoc;
|
|
bool LexID = true;
|
|
|
|
while (true) {
|
|
PP.Lex(Tok);
|
|
|
|
if (LexID) {
|
|
if (Tok.is(tok::identifier)) {
|
|
Identifiers.push_back(Tok);
|
|
LexID = false;
|
|
continue;
|
|
}
|
|
|
|
// Illegal token!
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_unused_expected_var);
|
|
return;
|
|
}
|
|
|
|
// We are execting a ')' or a ','.
|
|
if (Tok.is(tok::comma)) {
|
|
LexID = true;
|
|
continue;
|
|
}
|
|
|
|
if (Tok.is(tok::r_paren)) {
|
|
RParenLoc = Tok.getLocation();
|
|
break;
|
|
}
|
|
|
|
// Illegal token!
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_unused_expected_punc);
|
|
return;
|
|
}
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) <<
|
|
"unused";
|
|
return;
|
|
}
|
|
|
|
// Verify that we have a location for the right parenthesis.
|
|
assert(RParenLoc.isValid() && "Valid '#pragma unused' must have ')'");
|
|
assert(!Identifiers.empty() && "Valid '#pragma unused' must have arguments");
|
|
|
|
// For each identifier token, insert into the token stream a
|
|
// annot_pragma_unused token followed by the identifier token.
|
|
// This allows us to cache a "#pragma unused" that occurs inside an inline
|
|
// C++ member function.
|
|
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 2 * Identifiers.size(), llvm::alignOf<Token>());
|
|
for (unsigned i=0; i != Identifiers.size(); i++) {
|
|
Token &pragmaUnusedTok = Toks[2*i], &idTok = Toks[2*i+1];
|
|
pragmaUnusedTok.startToken();
|
|
pragmaUnusedTok.setKind(tok::annot_pragma_unused);
|
|
pragmaUnusedTok.setLocation(UnusedLoc);
|
|
idTok = Identifiers[i];
|
|
}
|
|
PP.EnterTokenStream(Toks, 2*Identifiers.size(),
|
|
/*DisableMacroExpansion=*/true, /*OwnsTokens=*/false);
|
|
}
|
|
|
|
// #pragma weak identifier
|
|
// #pragma weak identifier '=' identifier
|
|
void PragmaWeakHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &WeakTok) {
|
|
SourceLocation WeakLoc = WeakTok.getLocation();
|
|
|
|
Token Tok;
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) << "weak";
|
|
return;
|
|
}
|
|
|
|
Token WeakName = Tok;
|
|
bool HasAlias = false;
|
|
Token AliasName;
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.is(tok::equal)) {
|
|
HasAlias = true;
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier)
|
|
<< "weak";
|
|
return;
|
|
}
|
|
AliasName = Tok;
|
|
PP.Lex(Tok);
|
|
}
|
|
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) << "weak";
|
|
return;
|
|
}
|
|
|
|
if (HasAlias) {
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 3, llvm::alignOf<Token>());
|
|
Token &pragmaUnusedTok = Toks[0];
|
|
pragmaUnusedTok.startToken();
|
|
pragmaUnusedTok.setKind(tok::annot_pragma_weakalias);
|
|
pragmaUnusedTok.setLocation(WeakLoc);
|
|
Toks[1] = WeakName;
|
|
Toks[2] = AliasName;
|
|
PP.EnterTokenStream(Toks, 3,
|
|
/*DisableMacroExpansion=*/true, /*OwnsTokens=*/false);
|
|
} else {
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 2, llvm::alignOf<Token>());
|
|
Token &pragmaUnusedTok = Toks[0];
|
|
pragmaUnusedTok.startToken();
|
|
pragmaUnusedTok.setKind(tok::annot_pragma_weak);
|
|
pragmaUnusedTok.setLocation(WeakLoc);
|
|
Toks[1] = WeakName;
|
|
PP.EnterTokenStream(Toks, 2,
|
|
/*DisableMacroExpansion=*/true, /*OwnsTokens=*/false);
|
|
}
|
|
}
|
|
|
|
// #pragma redefine_extname identifier identifier
|
|
void PragmaRedefineExtnameHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &RedefToken) {
|
|
SourceLocation RedefLoc = RedefToken.getLocation();
|
|
|
|
Token Tok;
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) <<
|
|
"redefine_extname";
|
|
return;
|
|
}
|
|
|
|
Token RedefName = Tok;
|
|
PP.Lex(Tok);
|
|
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier)
|
|
<< "redefine_extname";
|
|
return;
|
|
}
|
|
|
|
Token AliasName = Tok;
|
|
PP.Lex(Tok);
|
|
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) <<
|
|
"redefine_extname";
|
|
return;
|
|
}
|
|
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 3, llvm::alignOf<Token>());
|
|
Token &pragmaRedefTok = Toks[0];
|
|
pragmaRedefTok.startToken();
|
|
pragmaRedefTok.setKind(tok::annot_pragma_redefine_extname);
|
|
pragmaRedefTok.setLocation(RedefLoc);
|
|
Toks[1] = RedefName;
|
|
Toks[2] = AliasName;
|
|
PP.EnterTokenStream(Toks, 3,
|
|
/*DisableMacroExpansion=*/true, /*OwnsTokens=*/false);
|
|
}
|
|
|
|
|
|
void
|
|
PragmaFPContractHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &Tok) {
|
|
tok::OnOffSwitch OOS;
|
|
if (PP.LexOnOffSwitch(OOS))
|
|
return;
|
|
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 1, llvm::alignOf<Token>());
|
|
new (Toks) Token();
|
|
Toks[0].startToken();
|
|
Toks[0].setKind(tok::annot_pragma_fp_contract);
|
|
Toks[0].setLocation(Tok.getLocation());
|
|
Toks[0].setAnnotationValue(reinterpret_cast<void*>(
|
|
static_cast<uintptr_t>(OOS)));
|
|
PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true,
|
|
/*OwnsTokens=*/false);
|
|
}
|
|
|
|
void
|
|
PragmaOpenCLExtensionHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &Tok) {
|
|
PP.LexUnexpandedToken(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) <<
|
|
"OPENCL";
|
|
return;
|
|
}
|
|
IdentifierInfo *ename = Tok.getIdentifierInfo();
|
|
SourceLocation NameLoc = Tok.getLocation();
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::colon)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_colon) << ename;
|
|
return;
|
|
}
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_enable_disable);
|
|
return;
|
|
}
|
|
IdentifierInfo *op = Tok.getIdentifierInfo();
|
|
|
|
unsigned state;
|
|
if (op->isStr("enable")) {
|
|
state = 1;
|
|
} else if (op->isStr("disable")) {
|
|
state = 0;
|
|
} else {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_enable_disable);
|
|
return;
|
|
}
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) <<
|
|
"OPENCL EXTENSION";
|
|
return;
|
|
}
|
|
|
|
OpenCLExtData data(ename, state);
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 1, llvm::alignOf<Token>());
|
|
new (Toks) Token();
|
|
Toks[0].startToken();
|
|
Toks[0].setKind(tok::annot_pragma_opencl_extension);
|
|
Toks[0].setLocation(NameLoc);
|
|
Toks[0].setAnnotationValue(data.getOpaqueValue());
|
|
PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true,
|
|
/*OwnsTokens=*/false);
|
|
}
|
|
|
|
/// \brief Handle '#pragma omp ...' when OpenMP is disabled.
|
|
///
|
|
void
|
|
PragmaNoOpenMPHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &FirstTok) {
|
|
if (PP.getDiagnostics().getDiagnosticLevel(diag::warn_pragma_omp_ignored,
|
|
FirstTok.getLocation()) !=
|
|
DiagnosticsEngine::Ignored) {
|
|
PP.Diag(FirstTok, diag::warn_pragma_omp_ignored);
|
|
PP.getDiagnostics().setDiagnosticMapping(diag::warn_pragma_omp_ignored,
|
|
diag::MAP_IGNORE,
|
|
SourceLocation());
|
|
}
|
|
PP.DiscardUntilEndOfDirective();
|
|
}
|
|
|
|
/// \brief Handle '#pragma omp ...' when OpenMP is enabled.
|
|
///
|
|
void
|
|
PragmaOpenMPHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &FirstTok) {
|
|
SmallVector<Token, 16> Pragma;
|
|
Token Tok;
|
|
Tok.startToken();
|
|
Tok.setKind(tok::annot_pragma_openmp);
|
|
Tok.setLocation(FirstTok.getLocation());
|
|
|
|
while (Tok.isNot(tok::eod)) {
|
|
Pragma.push_back(Tok);
|
|
PP.Lex(Tok);
|
|
}
|
|
SourceLocation EodLoc = Tok.getLocation();
|
|
Tok.startToken();
|
|
Tok.setKind(tok::annot_pragma_openmp_end);
|
|
Tok.setLocation(EodLoc);
|
|
Pragma.push_back(Tok);
|
|
|
|
Token *Toks = new Token[Pragma.size()];
|
|
std::copy(Pragma.begin(), Pragma.end(), Toks);
|
|
PP.EnterTokenStream(Toks, Pragma.size(),
|
|
/*DisableMacroExpansion=*/true, /*OwnsTokens=*/true);
|
|
}
|
|
|
|
/// \brief Handle the Microsoft \#pragma detect_mismatch extension.
|
|
///
|
|
/// The syntax is:
|
|
/// \code
|
|
/// #pragma detect_mismatch("name", "value")
|
|
/// \endcode
|
|
/// Where 'name' and 'value' are quoted strings. The values are embedded in
|
|
/// the object file and passed along to the linker. If the linker detects a
|
|
/// mismatch in the object file's values for the given name, a LNK2038 error
|
|
/// is emitted. See MSDN for more details.
|
|
void PragmaDetectMismatchHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &Tok) {
|
|
SourceLocation CommentLoc = Tok.getLocation();
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
PP.Diag(CommentLoc, diag::err_expected_lparen);
|
|
return;
|
|
}
|
|
|
|
// Read the name to embed, which must be a string literal.
|
|
std::string NameString;
|
|
if (!PP.LexStringLiteral(Tok, NameString,
|
|
"pragma detect_mismatch",
|
|
/*MacroExpansion=*/true))
|
|
return;
|
|
|
|
// Read the comma followed by a second string literal.
|
|
std::string ValueString;
|
|
if (Tok.isNot(tok::comma)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_detect_mismatch_malformed);
|
|
return;
|
|
}
|
|
|
|
if (!PP.LexStringLiteral(Tok, ValueString, "pragma detect_mismatch",
|
|
/*MacroExpansion=*/true))
|
|
return;
|
|
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_expected_rparen);
|
|
return;
|
|
}
|
|
PP.Lex(Tok); // Eat the r_paren.
|
|
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_detect_mismatch_malformed);
|
|
return;
|
|
}
|
|
|
|
// If the pragma is lexically sound, notify any interested PPCallbacks.
|
|
if (PP.getPPCallbacks())
|
|
PP.getPPCallbacks()->PragmaDetectMismatch(CommentLoc, NameString,
|
|
ValueString);
|
|
|
|
Actions.ActOnPragmaDetectMismatch(NameString, ValueString);
|
|
}
|
|
|
|
/// \brief Handle the microsoft \#pragma comment extension.
|
|
///
|
|
/// The syntax is:
|
|
/// \code
|
|
/// #pragma comment(linker, "foo")
|
|
/// \endcode
|
|
/// 'linker' is one of five identifiers: compiler, exestr, lib, linker, user.
|
|
/// "foo" is a string, which is fully macro expanded, and permits string
|
|
/// concatenation, embedded escape characters etc. See MSDN for more details.
|
|
void PragmaCommentHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &Tok) {
|
|
SourceLocation CommentLoc = Tok.getLocation();
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
PP.Diag(CommentLoc, diag::err_pragma_comment_malformed);
|
|
return;
|
|
}
|
|
|
|
// Read the identifier.
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(CommentLoc, diag::err_pragma_comment_malformed);
|
|
return;
|
|
}
|
|
|
|
// Verify that this is one of the 5 whitelisted options.
|
|
IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
Sema::PragmaMSCommentKind Kind =
|
|
llvm::StringSwitch<Sema::PragmaMSCommentKind>(II->getName())
|
|
.Case("linker", Sema::PCK_Linker)
|
|
.Case("lib", Sema::PCK_Lib)
|
|
.Case("compiler", Sema::PCK_Compiler)
|
|
.Case("exestr", Sema::PCK_ExeStr)
|
|
.Case("user", Sema::PCK_User)
|
|
.Default(Sema::PCK_Unknown);
|
|
if (Kind == Sema::PCK_Unknown) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_comment_unknown_kind);
|
|
return;
|
|
}
|
|
|
|
// Read the optional string if present.
|
|
PP.Lex(Tok);
|
|
std::string ArgumentString;
|
|
if (Tok.is(tok::comma) && !PP.LexStringLiteral(Tok, ArgumentString,
|
|
"pragma comment",
|
|
/*MacroExpansion=*/true))
|
|
return;
|
|
|
|
// FIXME: warn that 'exestr' is deprecated.
|
|
// FIXME: If the kind is "compiler" warn if the string is present (it is
|
|
// ignored).
|
|
// The MSDN docs say that "lib" and "linker" require a string and have a short
|
|
// whitelist of linker options they support, but in practice MSVC doesn't
|
|
// issue a diagnostic. Therefore neither does clang.
|
|
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_comment_malformed);
|
|
return;
|
|
}
|
|
PP.Lex(Tok); // eat the r_paren.
|
|
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_comment_malformed);
|
|
return;
|
|
}
|
|
|
|
// If the pragma is lexically sound, notify any interested PPCallbacks.
|
|
if (PP.getPPCallbacks())
|
|
PP.getPPCallbacks()->PragmaComment(CommentLoc, II, ArgumentString);
|
|
|
|
Actions.ActOnPragmaMSComment(Kind, ArgumentString);
|
|
}
|