blob: 3d190abffcf83f180e991f3342a9c98746b292ea [file] [log] [blame]
//===--- 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/Rewrite/ASTConsumers.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Rewrite/HTMLRewrite.h"
#include "clang/Rewrite/Rewriter.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
using namespace clang;
// Functional HTML pretty-printing.
namespace {
class HTMLPrinter : public ASTConsumer {
Rewriter R;
raw_ostream *Out;
Preprocessor &PP;
bool SyntaxHighlight, HighlightMacros;
HTMLPrinter(raw_ostream *OS, Preprocessor &pp,
bool _SyntaxHighlight, bool _HighlightMacros)
: Out(OS), PP(pp), SyntaxHighlight(_SyntaxHighlight),
HighlightMacros(_HighlightMacros) {}
void Initialize(ASTContext &context);
void HandleTranslationUnit(ASTContext &Ctx);
ASTConsumer* clang::CreateHTMLPrinter(raw_ostream *OS,
Preprocessor &PP,
bool SyntaxHighlight,
bool HighlightMacros) {
return new HTMLPrinter(OS, PP, SyntaxHighlight, HighlightMacros);
void HTMLPrinter::Initialize(ASTContext &context) {
R.setSourceMgr(context.getSourceManager(), context.getLangOpts());
void HTMLPrinter::HandleTranslationUnit(ASTContext &Ctx) {
if (PP.getDiagnostics().hasErrorOccurred())
// 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();
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 (SyntaxHighlight) html::SyntaxHighlight(R, FID, PP);
if (HighlightMacros) 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());