vendor/clang/clang-r72732

1 files changed, 92 insertions, 0 deletions

diff --git a/lib/Frontend/HTMLPrint.cpp b/lib/Frontend/HTMLPrint.cpp
new file mode 100644
index 000000000000..d5eb9fb5313d
--- /dev/null
+++ b/lib/Frontend/HTMLPrint.cpp
@@ -0,0 +1,92 @@
+//===--- HTMLPrint.cpp - Source code -> HTML pretty-printing --------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Pretty-printing of source code to HTML.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Frontend/ASTConsumers.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/AST/Decl.h"
+#include "clang/Rewrite/Rewriter.h"
+#include "clang/Rewrite/HTMLRewrite.h"
+#include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/AST/ASTContext.h"
+#include "llvm/Support/MemoryBuffer.h"
+
+using namespace clang;
+
+//===----------------------------------------------------------------------===//
+// Functional HTML pretty-printing.
+//===----------------------------------------------------------------------===//  
+
+namespace {
+  class HTMLPrinter : public ASTConsumer {
+    Rewriter R;
+    llvm::raw_ostream *Out;
+    Diagnostic &Diags;
+    Preprocessor *PP;
+    PreprocessorFactory *PPF;
+  public:
+    HTMLPrinter(llvm::raw_ostream *OS, Diagnostic &D, Preprocessor *pp,
+                PreprocessorFactory* ppf)
+      : Out(OS), Diags(D), PP(pp), PPF(ppf) {}
+    virtual ~HTMLPrinter();
+    
+    void Initialize(ASTContext &context);
+  };
+}
+
+ASTConsumer* clang::CreateHTMLPrinter(llvm::raw_ostream *OS,
+                                      Diagnostic &D, Preprocessor *PP,
+                                      PreprocessorFactory* PPF) {
+  
+  return new HTMLPrinter(OS, D, PP, PPF);
+}
+
+void HTMLPrinter::Initialize(ASTContext &context) {
+  R.setSourceMgr(context.getSourceManager(), context.getLangOptions());
+}
+
+HTMLPrinter::~HTMLPrinter() {
+  if (Diags.hasErrorOccurred())
+    return;
+
+  // Format the file.
+  FileID FID = R.getSourceMgr().getMainFileID();
+  const FileEntry* Entry = R.getSourceMgr().getFileEntryForID(FID);
+  const char* Name;
+  // In some cases, in particular the case where the input is from stdin,
+  // there is no entry.  Fall back to the memory buffer for a name in those
+  // cases.
+  if (Entry)
+    Name = Entry->getName();
+  else
+    Name = R.getSourceMgr().getBuffer(FID)->getBufferIdentifier();
+
+  html::AddLineNumbers(R, FID);
+  html::AddHeaderFooterInternalBuiltinCSS(R, FID, Name);
+
+  // If we have a preprocessor, relex the file and syntax highlight.
+  // We might not have a preprocessor if we come from a deserialized AST file,
+  // for example.
+  
+  if (PP) html::SyntaxHighlight(R, FID, *PP);
+  if (PPF) html::HighlightMacros(R, FID, *PP);
+  html::EscapeText(R, FID, false, true);
+
+  // Emit the HTML.
+  const RewriteBuffer &RewriteBuf = R.getEditBuffer(FID);
+  char *Buffer = (char*)malloc(RewriteBuf.size());
+  std::copy(RewriteBuf.begin(), RewriteBuf.end(), Buffer);
+  Out->write(Buffer, RewriteBuf.size());
+  free(Buffer);
+}