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//===--- 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);
}
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