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//===--- RewriteTest.cpp - Playground for the code rewriter ---------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Hacks and fun related to the code rewriter.
//
//===----------------------------------------------------------------------===//
#include "ASTConsumers.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/Rewrite/Rewriter.h"
#include "clang/Rewrite/HTMLRewrite.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/Support/MemoryBuffer.h"
#include "clang/AST/ASTContext.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Analysis/LocalCheckers.h"
#include "clang/AST/CFG.h"
#include <sstream>
using namespace clang;
//===----------------------------------------------------------------------===//
// Functional HTML pretty-printing.
//===----------------------------------------------------------------------===//
namespace {
class HTMLPrinter : public ASTConsumer {
Rewriter R;
public:
HTMLPrinter() {}
virtual ~HTMLPrinter();
void Initialize(ASTContext &context);
};
}
ASTConsumer* clang::CreateHTMLPrinter() { return new HTMLPrinter(); }
void HTMLPrinter::Initialize(ASTContext &context) {
R.setSourceMgr(context.getSourceManager());
}
HTMLPrinter::~HTMLPrinter() {
unsigned FileID = R.getSourceMgr().getMainFileID();
html::EscapeText(R, FileID);
html::AddLineNumbers(R, FileID);
html::AddHeaderFooterInternalBuiltinCSS(R, FileID);
// Emit the HTML.
if (const RewriteBuffer *RewriteBuf = R.getRewriteBufferFor(FileID)) {
std::string S(RewriteBuf->begin(), RewriteBuf->end());
printf("%s\n", S.c_str());
}
}
//===----------------------------------------------------------------------===//
// Other HTML pretty-printing code used to test new features.
//===----------------------------------------------------------------------===//
namespace {
class HTMLTest : public ASTConsumer {
Rewriter R;
ASTContext* Ctx;
public:
HTMLTest() : Ctx(NULL) {}
virtual ~HTMLTest();
virtual void HandleTopLevelDecl(Decl* D);
void Initialize(ASTContext &context);
void ProcessBody(Stmt* S);
};
}
ASTConsumer* clang::CreateHTMLTest() { return new HTMLTest(); }
void HTMLTest::Initialize(ASTContext &context) {
Ctx = &context;
R.setSourceMgr(context.getSourceManager());
}
void HTMLTest::HandleTopLevelDecl(Decl* D) {
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
if (Stmt* B = FD->getBody()) {
SourceLocation L = B->getLocStart();
if (L.isFileID() && L.getFileID() == R.getSourceMgr().getMainFileID())
ProcessBody(B);
}
}
HTMLTest::~HTMLTest() {
unsigned FileID = R.getSourceMgr().getMainFileID();
html::EscapeText(R, FileID);
html::AddLineNumbers(R, FileID);
html::AddHeaderFooterInternalBuiltinCSS(R, FileID);
// Emit the HTML.
if (const RewriteBuffer *RewriteBuf = R.getRewriteBufferFor(FileID)) {
std::string S(RewriteBuf->begin(), RewriteBuf->end());
printf("%s\n", S.c_str());
}
}
namespace {
class HTMLDiagnostic : public DiagnosticClient {
Rewriter& R;
public:
HTMLDiagnostic(Rewriter& r) : R(r) {}
virtual void HandleDiagnostic(Diagnostic &Diags,
Diagnostic::Level DiagLevel,
FullSourceLoc Pos,
diag::kind ID,
const std::string *Strs,
unsigned NumStrs,
const SourceRange *Ranges,
unsigned NumRanges);
};
}
void HTMLTest::ProcessBody(Stmt* S) {
CFG* cfg = CFG::buildCFG(S);
if (!cfg)
return;
HTMLDiagnostic HD(R);
Diagnostic D(HD);
CheckDeadStores(*cfg, *Ctx, D);
}
void HTMLDiagnostic::HandleDiagnostic(Diagnostic &Diags,
Diagnostic::Level DiagLevel,
FullSourceLoc Pos,
diag::kind ID,
const std::string *Strs,
unsigned NumStrs,
const SourceRange *Ranges,
unsigned NumRanges) {
// For now, just draw a box above the line in question, and emit the
// warning.
if (!Pos.isValid())
return;
FullSourceLoc LPos = Pos.getLogicalLoc();
unsigned FileID = LPos.getLocation().getFileID();
if (FileID != LPos.getManager().getMainFileID())
return;
// Compute the column number. Rewind from the current position to the start
// of the line.
unsigned ColNo = LPos.getColumnNumber();
const char *TokLogicalPtr = LPos.getCharacterData();
const char *LineStart = TokLogicalPtr-ColNo;
// Ripped from TextDiagnostics::FormatDiagnostic:
std::string Msg = Diags.getDescription(ID);
for (unsigned i = 0; i < Msg.size() - 1; ++i) {
if (Msg[i] == '%' && isdigit(Msg[i + 1])) {
unsigned StrNo = Msg[i + 1] - '0';
Msg = std::string(Msg.begin(), Msg.begin() + i) +
(StrNo < NumStrs ? Strs[StrNo] : "<<<INTERNAL ERROR>>>") +
std::string(Msg.begin() + i + 2, Msg.end());
}
}
// Start making the div tag.
std::ostringstream os;
os << "\n<div class=\"codeline\"><div class=\"nums\"> </div>"
<< "<div class=\"lines\">";
for (unsigned i = 0; i < ColNo+1; ++i)
os << ' ';
os << "</div><span class=\"msg\">";
switch (DiagLevel) {
default: assert(0 && "Unknown diagnostic type!");
case Diagnostic::Note: os << "note: "; break;
case Diagnostic::Warning: os << "warning: "; break;
case Diagnostic::Error: os << "error: "; break;
case Diagnostic::Fatal: os << "fatal error: "; break;
break;
}
os << Msg; // FIXME: HTML escape "Msg"
os << "</span></div";
// Insert a div tag with the warning.
const llvm::MemoryBuffer *Buf = R.getSourceMgr().getBuffer(FileID);
const char* FileStart = Buf->getBufferStart();
R.InsertStrBefore(SourceLocation::getFileLoc(FileID, LineStart - FileStart),
os.str());
}
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