[cfe-commits] r38616 - in /cfe/cfe/trunk/Lex: Pragma.cpp Preprocessor.cpp
sabre at cs.uiuc.edu
sabre at cs.uiuc.edu
Wed Jul 11 09:23:14 PDT 2007
Author: sabre
Date: Wed Jul 11 11:23:14 2007
New Revision: 38616
URL: http://llvm.org/viewvc/llvm-project?rev=38616&view=rev
Log:
Move some Pragma-related methods from Preprocessor.cpp to Pragma.cpp
Modified:
cfe/cfe/trunk/Lex/Pragma.cpp
cfe/cfe/trunk/Lex/Preprocessor.cpp
Modified: cfe/cfe/trunk/Lex/Pragma.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/cfe/trunk/Lex/Pragma.cpp?rev=38616&r1=38615&r2=38616&view=diff
==============================================================================
--- cfe/cfe/trunk/Lex/Pragma.cpp (original)
+++ cfe/cfe/trunk/Lex/Pragma.cpp Wed Jul 11 11:23:14 2007
@@ -7,12 +7,17 @@
//
//===----------------------------------------------------------------------===//
//
-// This file implements the PragmaHandler and PragmaTable interfaces.
+// This file implements the PragmaHandler/PragmaTable interfaces and implements
+// pragma related methods of the Preprocessor class.
//
//===----------------------------------------------------------------------===//
#include "clang/Lex/Pragma.h"
#include "clang/Lex/Preprocessor.h"
+#include "clang/Lex/ScratchBuffer.h"
+#include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Basic/SourceManager.h"
using namespace llvm;
using namespace clang;
@@ -32,3 +37,298 @@
// Otherwise, pass it down.
Handler->HandlePragma(PP, Tok);
}
+
+
+//===----------------------------------------------------------------------===//
+// Preprocessor Pragma Directive Handling.
+//===----------------------------------------------------------------------===//
+
+/// HandlePragmaDirective - The "#pragma" directive has been parsed. Lex the
+/// rest of the pragma, passing it to the registered pragma handlers.
+void Preprocessor::HandlePragmaDirective() {
+ ++NumPragma;
+
+ // Invoke the first level of pragma handlers which reads the namespace id.
+ LexerToken Tok;
+ PragmaHandlers->HandlePragma(*this, Tok);
+
+ // If the pragma handler didn't read the rest of the line, consume it now.
+ if (CurLexer->ParsingPreprocessorDirective)
+ DiscardUntilEndOfDirective();
+}
+
+/// Handle_Pragma - Read a _Pragma directive, slice it up, process it, then
+/// return the first token after the directive. The _Pragma token has just
+/// been read into 'Tok'.
+void Preprocessor::Handle_Pragma(LexerToken &Tok) {
+ // Remember the pragma token location.
+ SourceLocation PragmaLoc = Tok.getLocation();
+
+ // Read the '('.
+ Lex(Tok);
+ if (Tok.getKind() != tok::l_paren)
+ return Diag(PragmaLoc, diag::err__Pragma_malformed);
+
+ // Read the '"..."'.
+ Lex(Tok);
+ if (Tok.getKind() != tok::string_literal)
+ return Diag(PragmaLoc, diag::err__Pragma_malformed);
+
+ // Remember the string.
+ std::string StrVal = getSpelling(Tok);
+ SourceLocation StrLoc = Tok.getLocation();
+
+ // Read the ')'.
+ Lex(Tok);
+ if (Tok.getKind() != tok::r_paren)
+ return Diag(PragmaLoc, diag::err__Pragma_malformed);
+
+ // The _Pragma is lexically sound. Destringize according to C99 6.10.9.1.
+ if (StrVal[0] == 'L') // Remove L prefix.
+ StrVal.erase(StrVal.begin());
+ assert(StrVal[0] == '"' && StrVal[StrVal.size()-1] == '"' &&
+ "Invalid string token!");
+
+ // Remove the front quote, replacing it with a space, so that the pragma
+ // contents appear to have a space before them.
+ StrVal[0] = ' ';
+
+ // Replace the terminating quote with a \n\0.
+ StrVal[StrVal.size()-1] = '\n';
+ StrVal += '\0';
+
+ // Remove escaped quotes and escapes.
+ for (unsigned i = 0, e = StrVal.size(); i != e-1; ++i) {
+ if (StrVal[i] == '\\' &&
+ (StrVal[i+1] == '\\' || StrVal[i+1] == '"')) {
+ // \\ -> '\' and \" -> '"'.
+ StrVal.erase(StrVal.begin()+i);
+ --e;
+ }
+ }
+
+ // Plop the string (including the trailing null) into a buffer where we can
+ // lex it.
+ SourceLocation TokLoc = ScratchBuf->getToken(&StrVal[0], StrVal.size());
+ const char *StrData = SourceMgr.getCharacterData(TokLoc);
+
+ // FIXME: Create appropriate mapping info for this FileID, so that we know the
+ // tokens are coming out of the input string (StrLoc).
+ unsigned FileID = TokLoc.getFileID();
+ assert(FileID && "Could not create FileID for predefines?");
+
+ // Make and enter a lexer object so that we lex and expand the tokens just
+ // like any others.
+ Lexer *TL = new Lexer(SourceMgr.getBuffer(FileID), FileID, *this,
+ StrData, StrData+StrVal.size()-1 /* no null */);
+ EnterSourceFileWithLexer(TL, 0);
+
+ // Ensure that the lexer thinks it is inside a directive, so that end \n will
+ // return an EOM token.
+ TL->ParsingPreprocessorDirective = true;
+
+ // This lexer really is for _Pragma.
+ TL->Is_PragmaLexer = true;
+
+ // With everything set up, lex this as a #pragma directive.
+ HandlePragmaDirective();
+
+ // Finally, return whatever came after the pragma directive.
+ return Lex(Tok);
+}
+
+
+
+/// HandlePragmaOnce - Handle #pragma once. OnceTok is the 'once'.
+///
+void Preprocessor::HandlePragmaOnce(LexerToken &OnceTok) {
+ if (isInPrimaryFile()) {
+ Diag(OnceTok, diag::pp_pragma_once_in_main_file);
+ return;
+ }
+
+ // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc.
+ unsigned FileID = getCurrentFileLexer()->getCurFileID();
+
+ // Mark the file as a once-only file now.
+ getFileInfo(SourceMgr.getFileEntryForFileID(FileID)).isImport = true;
+}
+
+/// HandlePragmaPoison - Handle #pragma GCC poison. PoisonTok is the 'poison'.
+///
+void Preprocessor::HandlePragmaPoison(LexerToken &PoisonTok) {
+ LexerToken Tok;
+ assert(!SkippingContents && "Why are we handling pragmas while skipping?");
+ while (1) {
+ // Read the next token to poison. While doing this, pretend that we are
+ // skipping while reading the identifier to poison.
+ // This avoids errors on code like:
+ // #pragma GCC poison X
+ // #pragma GCC poison X
+ SkippingContents = true;
+ LexUnexpandedToken(Tok);
+ SkippingContents = false;
+
+ // If we reached the end of line, we're done.
+ if (Tok.getKind() == tok::eom) return;
+
+ // Can only poison identifiers.
+ if (Tok.getKind() != tok::identifier) {
+ Diag(Tok, diag::err_pp_invalid_poison);
+ return;
+ }
+
+ // Look up the identifier info for the token.
+ std::string TokStr = getSpelling(Tok);
+ IdentifierTokenInfo *II =
+ getIdentifierInfo(&TokStr[0], &TokStr[0]+TokStr.size());
+
+ // Already poisoned.
+ if (II->isPoisoned()) continue;
+
+ // If this is a macro identifier, emit a warning.
+ if (II->getMacroInfo())
+ Diag(Tok, diag::pp_poisoning_existing_macro);
+
+ // Finally, poison it!
+ II->setIsPoisoned();
+ }
+}
+
+/// HandlePragmaSystemHeader - Implement #pragma GCC system_header. We know
+/// that the whole directive has been parsed.
+void Preprocessor::HandlePragmaSystemHeader(LexerToken &SysHeaderTok) {
+ if (isInPrimaryFile()) {
+ Diag(SysHeaderTok, diag::pp_pragma_sysheader_in_main_file);
+ return;
+ }
+
+ // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc.
+ Lexer *TheLexer = getCurrentFileLexer();
+
+ // Mark the file as a system header.
+ const FileEntry *File =
+ SourceMgr.getFileEntryForFileID(TheLexer->getCurFileID());
+ getFileInfo(File).DirInfo = DirectoryLookup::SystemHeaderDir;
+
+ // Notify the client, if desired, that we are in a new source file.
+ if (FileChangeHandler)
+ FileChangeHandler(TheLexer->getSourceLocation(TheLexer->BufferPtr),
+ SystemHeaderPragma, DirectoryLookup::SystemHeaderDir);
+}
+
+/// HandlePragmaDependency - Handle #pragma GCC dependency "foo" blah.
+///
+void Preprocessor::HandlePragmaDependency(LexerToken &DependencyTok) {
+ LexerToken FilenameTok;
+ std::string Filename = CurLexer->LexIncludeFilename(FilenameTok);
+
+ // If the token kind is EOM, the error has already been diagnosed.
+ if (FilenameTok.getKind() == tok::eom)
+ return;
+
+ // Find out whether the filename is <x> or "x".
+ bool isAngled = Filename[0] == '<';
+
+ // Remove the quotes.
+ Filename = std::string(Filename.begin()+1, Filename.end()-1);
+
+ // Search include directories.
+ const DirectoryLookup *CurDir;
+ const FileEntry *File = LookupFile(Filename, isAngled, 0, CurDir);
+ if (File == 0)
+ return Diag(FilenameTok, diag::err_pp_file_not_found);
+
+ unsigned FileID = getCurrentFileLexer()->getCurFileID();
+ const FileEntry *CurFile = SourceMgr.getFileEntryForFileID(FileID);
+
+ // If this file is older than the file it depends on, emit a diagnostic.
+ if (CurFile && CurFile->getModificationTime() < File->getModificationTime()) {
+ // Lex tokens at the end of the message and include them in the message.
+ std::string Message;
+ Lex(DependencyTok);
+ while (DependencyTok.getKind() != tok::eom) {
+ Message += getSpelling(DependencyTok) + " ";
+ Lex(DependencyTok);
+ }
+
+ Message.erase(Message.end()-1);
+ Diag(FilenameTok, diag::pp_out_of_date_dependency, Message);
+ }
+}
+
+
+/// AddPragmaHandler - Add the specified pragma handler to the preprocessor.
+/// If 'Namespace' is non-null, then it is a token required to exist on the
+/// pragma line before the pragma string starts, e.g. "STDC" or "GCC".
+void Preprocessor::AddPragmaHandler(const char *Namespace,
+ PragmaHandler *Handler) {
+ PragmaNamespace *InsertNS = PragmaHandlers;
+
+ // If this is specified to be in a namespace, step down into it.
+ if (Namespace) {
+ IdentifierTokenInfo *NSID = getIdentifierInfo(Namespace);
+
+ // If there is already a pragma handler with the name of this namespace,
+ // we either have an error (directive with the same name as a namespace) or
+ // we already have the namespace to insert into.
+ if (PragmaHandler *Existing = PragmaHandlers->FindHandler(NSID)) {
+ InsertNS = Existing->getIfNamespace();
+ assert(InsertNS != 0 && "Cannot have a pragma namespace and pragma"
+ " handler with the same name!");
+ } else {
+ // Otherwise, this namespace doesn't exist yet, create and insert the
+ // handler for it.
+ InsertNS = new PragmaNamespace(NSID);
+ PragmaHandlers->AddPragma(InsertNS);
+ }
+ }
+
+ // Check to make sure we don't already have a pragma for this identifier.
+ assert(!InsertNS->FindHandler(Handler->getName()) &&
+ "Pragma handler already exists for this identifier!");
+ InsertNS->AddPragma(Handler);
+}
+
+namespace {
+struct PragmaOnceHandler : public PragmaHandler {
+ PragmaOnceHandler(const IdentifierTokenInfo *OnceID) : PragmaHandler(OnceID){}
+ virtual void HandlePragma(Preprocessor &PP, LexerToken &OnceTok) {
+ PP.CheckEndOfDirective("#pragma once");
+ PP.HandlePragmaOnce(OnceTok);
+ }
+};
+
+struct PragmaPoisonHandler : public PragmaHandler {
+ PragmaPoisonHandler(const IdentifierTokenInfo *ID) : PragmaHandler(ID) {}
+ virtual void HandlePragma(Preprocessor &PP, LexerToken &PoisonTok) {
+ PP.HandlePragmaPoison(PoisonTok);
+ }
+};
+
+struct PragmaSystemHeaderHandler : public PragmaHandler {
+ PragmaSystemHeaderHandler(const IdentifierTokenInfo *ID) : PragmaHandler(ID){}
+ virtual void HandlePragma(Preprocessor &PP, LexerToken &SHToken) {
+ PP.HandlePragmaSystemHeader(SHToken);
+ PP.CheckEndOfDirective("#pragma");
+ }
+};
+struct PragmaDependencyHandler : public PragmaHandler {
+ PragmaDependencyHandler(const IdentifierTokenInfo *ID) : PragmaHandler(ID) {}
+ virtual void HandlePragma(Preprocessor &PP, LexerToken &DepToken) {
+ PP.HandlePragmaDependency(DepToken);
+ }
+};
+} // end anonymous namespace
+
+
+/// RegisterBuiltinPragmas - Install the standard preprocessor pragmas:
+/// #pragma GCC poison/system_header/dependency and #pragma once.
+void Preprocessor::RegisterBuiltinPragmas() {
+ AddPragmaHandler(0, new PragmaOnceHandler(getIdentifierInfo("once")));
+ AddPragmaHandler("GCC", new PragmaPoisonHandler(getIdentifierInfo("poison")));
+ AddPragmaHandler("GCC", new PragmaSystemHeaderHandler(
+ getIdentifierInfo("system_header")));
+ AddPragmaHandler("GCC", new PragmaDependencyHandler(
+ getIdentifierInfo("dependency")));
+}
Modified: cfe/cfe/trunk/Lex/Preprocessor.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/cfe/trunk/Lex/Preprocessor.cpp?rev=38616&r1=38615&r2=38616&view=diff
==============================================================================
--- cfe/cfe/trunk/Lex/Preprocessor.cpp (original)
+++ cfe/cfe/trunk/Lex/Preprocessor.cpp Wed Jul 11 11:23:14 2007
@@ -1454,297 +1454,3 @@
/*FoundElse*/CI.FoundElse);
}
-
-//===----------------------------------------------------------------------===//
-// Preprocessor Pragma Directive Handling.
-//===----------------------------------------------------------------------===//
-
-/// HandlePragmaDirective - The "#pragma" directive has been parsed. Lex the
-/// rest of the pragma, passing it to the registered pragma handlers.
-void Preprocessor::HandlePragmaDirective() {
- ++NumPragma;
-
- // Invoke the first level of pragma handlers which reads the namespace id.
- LexerToken Tok;
- PragmaHandlers->HandlePragma(*this, Tok);
-
- // If the pragma handler didn't read the rest of the line, consume it now.
- if (CurLexer->ParsingPreprocessorDirective)
- DiscardUntilEndOfDirective();
-}
-
-/// Handle_Pragma - Read a _Pragma directive, slice it up, process it, then
-/// return the first token after the directive. The _Pragma token has just
-/// been read into 'Tok'.
-void Preprocessor::Handle_Pragma(LexerToken &Tok) {
- // Remember the pragma token location.
- SourceLocation PragmaLoc = Tok.getLocation();
-
- // Read the '('.
- Lex(Tok);
- if (Tok.getKind() != tok::l_paren)
- return Diag(PragmaLoc, diag::err__Pragma_malformed);
-
- // Read the '"..."'.
- Lex(Tok);
- if (Tok.getKind() != tok::string_literal)
- return Diag(PragmaLoc, diag::err__Pragma_malformed);
-
- // Remember the string.
- std::string StrVal = getSpelling(Tok);
- SourceLocation StrLoc = Tok.getLocation();
-
- // Read the ')'.
- Lex(Tok);
- if (Tok.getKind() != tok::r_paren)
- return Diag(PragmaLoc, diag::err__Pragma_malformed);
-
- // The _Pragma is lexically sound. Destringize according to C99 6.10.9.1.
- if (StrVal[0] == 'L') // Remove L prefix.
- StrVal.erase(StrVal.begin());
- assert(StrVal[0] == '"' && StrVal[StrVal.size()-1] == '"' &&
- "Invalid string token!");
-
- // Remove the front quote, replacing it with a space, so that the pragma
- // contents appear to have a space before them.
- StrVal[0] = ' ';
-
- // Replace the terminating quote with a \n\0.
- StrVal[StrVal.size()-1] = '\n';
- StrVal += '\0';
-
- // Remove escaped quotes and escapes.
- for (unsigned i = 0, e = StrVal.size(); i != e-1; ++i) {
- if (StrVal[i] == '\\' &&
- (StrVal[i+1] == '\\' || StrVal[i+1] == '"')) {
- // \\ -> '\' and \" -> '"'.
- StrVal.erase(StrVal.begin()+i);
- --e;
- }
- }
-
- // Plop the string (including the trailing null) into a buffer where we can
- // lex it.
- SourceLocation TokLoc = ScratchBuf->getToken(&StrVal[0], StrVal.size());
- const char *StrData = SourceMgr.getCharacterData(TokLoc);
-
- // FIXME: Create appropriate mapping info for this FileID, so that we know the
- // tokens are coming out of the input string (StrLoc).
- unsigned FileID = TokLoc.getFileID();
- assert(FileID && "Could not create FileID for predefines?");
-
- // Make and enter a lexer object so that we lex and expand the tokens just
- // like any others.
- Lexer *TL = new Lexer(SourceMgr.getBuffer(FileID), FileID, *this,
- StrData, StrData+StrVal.size()-1 /* no null */);
- EnterSourceFileWithLexer(TL, 0);
-
- // Ensure that the lexer thinks it is inside a directive, so that end \n will
- // return an EOM token.
- TL->ParsingPreprocessorDirective = true;
-
- // This lexer really is for _Pragma.
- TL->Is_PragmaLexer = true;
-
- // With everything set up, lex this as a #pragma directive.
- HandlePragmaDirective();
-
- // Finally, return whatever came after the pragma directive.
- return Lex(Tok);
-}
-
-
-
-/// HandlePragmaOnce - Handle #pragma once. OnceTok is the 'once'.
-///
-void Preprocessor::HandlePragmaOnce(LexerToken &OnceTok) {
- if (isInPrimaryFile()) {
- Diag(OnceTok, diag::pp_pragma_once_in_main_file);
- return;
- }
-
- // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc.
- unsigned FileID = getCurrentFileLexer()->getCurFileID();
-
- // Mark the file as a once-only file now.
- getFileInfo(SourceMgr.getFileEntryForFileID(FileID)).isImport = true;
-}
-
-/// HandlePragmaPoison - Handle #pragma GCC poison. PoisonTok is the 'poison'.
-///
-void Preprocessor::HandlePragmaPoison(LexerToken &PoisonTok) {
- LexerToken Tok;
- assert(!SkippingContents && "Why are we handling pragmas while skipping?");
- while (1) {
- // Read the next token to poison. While doing this, pretend that we are
- // skipping while reading the identifier to poison.
- // This avoids errors on code like:
- // #pragma GCC poison X
- // #pragma GCC poison X
- SkippingContents = true;
- LexUnexpandedToken(Tok);
- SkippingContents = false;
-
- // If we reached the end of line, we're done.
- if (Tok.getKind() == tok::eom) return;
-
- // Can only poison identifiers.
- if (Tok.getKind() != tok::identifier) {
- Diag(Tok, diag::err_pp_invalid_poison);
- return;
- }
-
- // Look up the identifier info for the token.
- std::string TokStr = getSpelling(Tok);
- IdentifierTokenInfo *II =
- getIdentifierInfo(&TokStr[0], &TokStr[0]+TokStr.size());
-
- // Already poisoned.
- if (II->isPoisoned()) continue;
-
- // If this is a macro identifier, emit a warning.
- if (II->getMacroInfo())
- Diag(Tok, diag::pp_poisoning_existing_macro);
-
- // Finally, poison it!
- II->setIsPoisoned();
- }
-}
-
-/// HandlePragmaSystemHeader - Implement #pragma GCC system_header. We know
-/// that the whole directive has been parsed.
-void Preprocessor::HandlePragmaSystemHeader(LexerToken &SysHeaderTok) {
- if (isInPrimaryFile()) {
- Diag(SysHeaderTok, diag::pp_pragma_sysheader_in_main_file);
- return;
- }
-
- // Get the current file lexer we're looking at. Ignore _Pragma 'files' etc.
- Lexer *TheLexer = getCurrentFileLexer();
-
- // Mark the file as a system header.
- const FileEntry *File =
- SourceMgr.getFileEntryForFileID(TheLexer->getCurFileID());
- getFileInfo(File).DirInfo = DirectoryLookup::SystemHeaderDir;
-
- // Notify the client, if desired, that we are in a new source file.
- if (FileChangeHandler)
- FileChangeHandler(TheLexer->getSourceLocation(TheLexer->BufferPtr),
- SystemHeaderPragma, DirectoryLookup::SystemHeaderDir);
-}
-
-/// HandlePragmaDependency - Handle #pragma GCC dependency "foo" blah.
-///
-void Preprocessor::HandlePragmaDependency(LexerToken &DependencyTok) {
- LexerToken FilenameTok;
- std::string Filename = CurLexer->LexIncludeFilename(FilenameTok);
-
- // If the token kind is EOM, the error has already been diagnosed.
- if (FilenameTok.getKind() == tok::eom)
- return;
-
- // Find out whether the filename is <x> or "x".
- bool isAngled = Filename[0] == '<';
-
- // Remove the quotes.
- Filename = std::string(Filename.begin()+1, Filename.end()-1);
-
- // Search include directories.
- const DirectoryLookup *CurDir;
- const FileEntry *File = LookupFile(Filename, isAngled, 0, CurDir);
- if (File == 0)
- return Diag(FilenameTok, diag::err_pp_file_not_found);
-
- unsigned FileID = getCurrentFileLexer()->getCurFileID();
- const FileEntry *CurFile = SourceMgr.getFileEntryForFileID(FileID);
-
- // If this file is older than the file it depends on, emit a diagnostic.
- if (CurFile && CurFile->getModificationTime() < File->getModificationTime()) {
- // Lex tokens at the end of the message and include them in the message.
- std::string Message;
- Lex(DependencyTok);
- while (DependencyTok.getKind() != tok::eom) {
- Message += getSpelling(DependencyTok) + " ";
- Lex(DependencyTok);
- }
-
- Message.erase(Message.end()-1);
- Diag(FilenameTok, diag::pp_out_of_date_dependency, Message);
- }
-}
-
-
-/// AddPragmaHandler - Add the specified pragma handler to the preprocessor.
-/// If 'Namespace' is non-null, then it is a token required to exist on the
-/// pragma line before the pragma string starts, e.g. "STDC" or "GCC".
-void Preprocessor::AddPragmaHandler(const char *Namespace,
- PragmaHandler *Handler) {
- PragmaNamespace *InsertNS = PragmaHandlers;
-
- // If this is specified to be in a namespace, step down into it.
- if (Namespace) {
- IdentifierTokenInfo *NSID = getIdentifierInfo(Namespace);
-
- // If there is already a pragma handler with the name of this namespace,
- // we either have an error (directive with the same name as a namespace) or
- // we already have the namespace to insert into.
- if (PragmaHandler *Existing = PragmaHandlers->FindHandler(NSID)) {
- InsertNS = Existing->getIfNamespace();
- assert(InsertNS != 0 && "Cannot have a pragma namespace and pragma"
- " handler with the same name!");
- } else {
- // Otherwise, this namespace doesn't exist yet, create and insert the
- // handler for it.
- InsertNS = new PragmaNamespace(NSID);
- PragmaHandlers->AddPragma(InsertNS);
- }
- }
-
- // Check to make sure we don't already have a pragma for this identifier.
- assert(!InsertNS->FindHandler(Handler->getName()) &&
- "Pragma handler already exists for this identifier!");
- InsertNS->AddPragma(Handler);
-}
-
-namespace {
-struct PragmaOnceHandler : public PragmaHandler {
- PragmaOnceHandler(const IdentifierTokenInfo *OnceID) : PragmaHandler(OnceID){}
- virtual void HandlePragma(Preprocessor &PP, LexerToken &OnceTok) {
- PP.CheckEndOfDirective("#pragma once");
- PP.HandlePragmaOnce(OnceTok);
- }
-};
-
-struct PragmaPoisonHandler : public PragmaHandler {
- PragmaPoisonHandler(const IdentifierTokenInfo *ID) : PragmaHandler(ID) {}
- virtual void HandlePragma(Preprocessor &PP, LexerToken &PoisonTok) {
- PP.HandlePragmaPoison(PoisonTok);
- }
-};
-
-struct PragmaSystemHeaderHandler : public PragmaHandler {
- PragmaSystemHeaderHandler(const IdentifierTokenInfo *ID) : PragmaHandler(ID){}
- virtual void HandlePragma(Preprocessor &PP, LexerToken &SHToken) {
- PP.HandlePragmaSystemHeader(SHToken);
- PP.CheckEndOfDirective("#pragma");
- }
-};
-struct PragmaDependencyHandler : public PragmaHandler {
- PragmaDependencyHandler(const IdentifierTokenInfo *ID) : PragmaHandler(ID) {}
- virtual void HandlePragma(Preprocessor &PP, LexerToken &DepToken) {
- PP.HandlePragmaDependency(DepToken);
- }
-};
-}
-
-
-/// RegisterBuiltinPragmas - Install the standard preprocessor pragmas:
-/// #pragma GCC poison/system_header/dependency and #pragma once.
-void Preprocessor::RegisterBuiltinPragmas() {
- AddPragmaHandler(0, new PragmaOnceHandler(getIdentifierInfo("once")));
- AddPragmaHandler("GCC", new PragmaPoisonHandler(getIdentifierInfo("poison")));
- AddPragmaHandler("GCC", new PragmaSystemHeaderHandler(
- getIdentifierInfo("system_header")));
- AddPragmaHandler("GCC", new PragmaDependencyHandler(
- getIdentifierInfo("dependency")));
-}
More information about the cfe-commits
mailing list