2018-03-27 08:01:49 +08:00
|
|
|
//===- Commit.cpp - A unit of edits ---------------------------------------===//
|
2012-03-07 04:06:33 +08:00
|
|
|
//
|
|
|
|
// The LLVM Compiler Infrastructure
|
|
|
|
//
|
|
|
|
// This file is distributed under the University of Illinois Open Source
|
|
|
|
// License. See LICENSE.TXT for details.
|
|
|
|
//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
|
|
#include "clang/Edit/Commit.h"
|
2018-03-27 08:01:49 +08:00
|
|
|
#include "clang/Basic/LLVM.h"
|
|
|
|
#include "clang/Basic/SourceLocation.h"
|
2012-12-04 17:13:33 +08:00
|
|
|
#include "clang/Basic/SourceManager.h"
|
2012-03-07 04:06:33 +08:00
|
|
|
#include "clang/Edit/EditedSource.h"
|
2018-03-27 08:01:49 +08:00
|
|
|
#include "clang/Edit/FileOffset.h"
|
2012-03-07 04:06:33 +08:00
|
|
|
#include "clang/Lex/Lexer.h"
|
2012-12-04 15:27:05 +08:00
|
|
|
#include "clang/Lex/PPConditionalDirectiveRecord.h"
|
2018-03-27 08:01:49 +08:00
|
|
|
#include "llvm/ADT/StringRef.h"
|
|
|
|
#include <cassert>
|
|
|
|
#include <utility>
|
2012-03-07 04:06:33 +08:00
|
|
|
|
|
|
|
using namespace clang;
|
|
|
|
using namespace edit;
|
|
|
|
|
|
|
|
SourceLocation Commit::Edit::getFileLocation(SourceManager &SM) const {
|
|
|
|
SourceLocation Loc = SM.getLocForStartOfFile(Offset.getFID());
|
|
|
|
Loc = Loc.getLocWithOffset(Offset.getOffset());
|
|
|
|
assert(Loc.isFileID());
|
|
|
|
return Loc;
|
|
|
|
}
|
|
|
|
|
|
|
|
CharSourceRange Commit::Edit::getFileRange(SourceManager &SM) const {
|
|
|
|
SourceLocation Loc = getFileLocation(SM);
|
|
|
|
return CharSourceRange::getCharRange(Loc, Loc.getLocWithOffset(Length));
|
|
|
|
}
|
|
|
|
|
|
|
|
CharSourceRange Commit::Edit::getInsertFromRange(SourceManager &SM) const {
|
|
|
|
SourceLocation Loc = SM.getLocForStartOfFile(InsertFromRangeOffs.getFID());
|
|
|
|
Loc = Loc.getLocWithOffset(InsertFromRangeOffs.getOffset());
|
|
|
|
assert(Loc.isFileID());
|
|
|
|
return CharSourceRange::getCharRange(Loc, Loc.getLocWithOffset(Length));
|
|
|
|
}
|
|
|
|
|
|
|
|
Commit::Commit(EditedSource &Editor)
|
2018-03-27 08:01:49 +08:00
|
|
|
: SourceMgr(Editor.getSourceManager()), LangOpts(Editor.getLangOpts()),
|
|
|
|
PPRec(Editor.getPPCondDirectiveRecord()),
|
|
|
|
Editor(&Editor) {}
|
2012-03-07 04:06:33 +08:00
|
|
|
|
|
|
|
bool Commit::insert(SourceLocation loc, StringRef text,
|
|
|
|
bool afterToken, bool beforePreviousInsertions) {
|
|
|
|
if (text.empty())
|
|
|
|
return true;
|
|
|
|
|
|
|
|
FileOffset Offs;
|
|
|
|
if ((!afterToken && !canInsert(loc, Offs)) ||
|
|
|
|
( afterToken && !canInsertAfterToken(loc, Offs, loc))) {
|
|
|
|
IsCommitable = false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
addInsert(loc, Offs, text, beforePreviousInsertions);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Commit::insertFromRange(SourceLocation loc,
|
|
|
|
CharSourceRange range,
|
|
|
|
bool afterToken, bool beforePreviousInsertions) {
|
|
|
|
FileOffset RangeOffs;
|
|
|
|
unsigned RangeLen;
|
|
|
|
if (!canRemoveRange(range, RangeOffs, RangeLen)) {
|
|
|
|
IsCommitable = false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
FileOffset Offs;
|
|
|
|
if ((!afterToken && !canInsert(loc, Offs)) ||
|
|
|
|
( afterToken && !canInsertAfterToken(loc, Offs, loc))) {
|
|
|
|
IsCommitable = false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (PPRec &&
|
|
|
|
PPRec->areInDifferentConditionalDirectiveRegion(loc, range.getBegin())) {
|
|
|
|
IsCommitable = false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
addInsertFromRange(loc, Offs, RangeOffs, RangeLen, beforePreviousInsertions);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Commit::remove(CharSourceRange range) {
|
|
|
|
FileOffset Offs;
|
|
|
|
unsigned Len;
|
|
|
|
if (!canRemoveRange(range, Offs, Len)) {
|
|
|
|
IsCommitable = false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
addRemove(range.getBegin(), Offs, Len);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Commit::insertWrap(StringRef before, CharSourceRange range,
|
|
|
|
StringRef after) {
|
|
|
|
bool commitableBefore = insert(range.getBegin(), before, /*afterToken=*/false,
|
|
|
|
/*beforePreviousInsertions=*/true);
|
|
|
|
bool commitableAfter;
|
|
|
|
if (range.isTokenRange())
|
|
|
|
commitableAfter = insertAfterToken(range.getEnd(), after);
|
|
|
|
else
|
|
|
|
commitableAfter = insert(range.getEnd(), after);
|
|
|
|
|
|
|
|
return commitableBefore && commitableAfter;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Commit::replace(CharSourceRange range, StringRef text) {
|
|
|
|
if (text.empty())
|
|
|
|
return remove(range);
|
|
|
|
|
|
|
|
FileOffset Offs;
|
|
|
|
unsigned Len;
|
|
|
|
if (!canInsert(range.getBegin(), Offs) || !canRemoveRange(range, Offs, Len)) {
|
|
|
|
IsCommitable = false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
addRemove(range.getBegin(), Offs, Len);
|
|
|
|
addInsert(range.getBegin(), Offs, text, false);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Commit::replaceWithInner(CharSourceRange range,
|
|
|
|
CharSourceRange replacementRange) {
|
|
|
|
FileOffset OuterBegin;
|
|
|
|
unsigned OuterLen;
|
|
|
|
if (!canRemoveRange(range, OuterBegin, OuterLen)) {
|
|
|
|
IsCommitable = false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
FileOffset InnerBegin;
|
|
|
|
unsigned InnerLen;
|
|
|
|
if (!canRemoveRange(replacementRange, InnerBegin, InnerLen)) {
|
|
|
|
IsCommitable = false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
FileOffset OuterEnd = OuterBegin.getWithOffset(OuterLen);
|
|
|
|
FileOffset InnerEnd = InnerBegin.getWithOffset(InnerLen);
|
|
|
|
if (OuterBegin.getFID() != InnerBegin.getFID() ||
|
|
|
|
InnerBegin < OuterBegin ||
|
|
|
|
InnerBegin > OuterEnd ||
|
|
|
|
InnerEnd > OuterEnd) {
|
|
|
|
IsCommitable = false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
addRemove(range.getBegin(),
|
|
|
|
OuterBegin, InnerBegin.getOffset() - OuterBegin.getOffset());
|
|
|
|
addRemove(replacementRange.getEnd(),
|
|
|
|
InnerEnd, OuterEnd.getOffset() - InnerEnd.getOffset());
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Commit::replaceText(SourceLocation loc, StringRef text,
|
|
|
|
StringRef replacementText) {
|
|
|
|
if (text.empty() || replacementText.empty())
|
|
|
|
return true;
|
|
|
|
|
|
|
|
FileOffset Offs;
|
|
|
|
unsigned Len;
|
|
|
|
if (!canReplaceText(loc, replacementText, Offs, Len)) {
|
|
|
|
IsCommitable = false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
addRemove(loc, Offs, Len);
|
|
|
|
addInsert(loc, Offs, text, false);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
void Commit::addInsert(SourceLocation OrigLoc, FileOffset Offs, StringRef text,
|
|
|
|
bool beforePreviousInsertions) {
|
|
|
|
if (text.empty())
|
|
|
|
return;
|
|
|
|
|
|
|
|
Edit data;
|
|
|
|
data.Kind = Act_Insert;
|
|
|
|
data.OrigLoc = OrigLoc;
|
|
|
|
data.Offset = Offs;
|
2015-08-04 19:18:09 +08:00
|
|
|
data.Text = text.copy(StrAlloc);
|
2012-03-07 04:06:33 +08:00
|
|
|
data.BeforePrev = beforePreviousInsertions;
|
|
|
|
CachedEdits.push_back(data);
|
|
|
|
}
|
|
|
|
|
|
|
|
void Commit::addInsertFromRange(SourceLocation OrigLoc, FileOffset Offs,
|
|
|
|
FileOffset RangeOffs, unsigned RangeLen,
|
|
|
|
bool beforePreviousInsertions) {
|
|
|
|
if (RangeLen == 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
Edit data;
|
|
|
|
data.Kind = Act_InsertFromRange;
|
|
|
|
data.OrigLoc = OrigLoc;
|
|
|
|
data.Offset = Offs;
|
|
|
|
data.InsertFromRangeOffs = RangeOffs;
|
|
|
|
data.Length = RangeLen;
|
|
|
|
data.BeforePrev = beforePreviousInsertions;
|
|
|
|
CachedEdits.push_back(data);
|
|
|
|
}
|
|
|
|
|
|
|
|
void Commit::addRemove(SourceLocation OrigLoc,
|
|
|
|
FileOffset Offs, unsigned Len) {
|
|
|
|
if (Len == 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
Edit data;
|
|
|
|
data.Kind = Act_Remove;
|
|
|
|
data.OrigLoc = OrigLoc;
|
|
|
|
data.Offset = Offs;
|
|
|
|
data.Length = Len;
|
|
|
|
CachedEdits.push_back(data);
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Commit::canInsert(SourceLocation loc, FileOffset &offs) {
|
|
|
|
if (loc.isInvalid())
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (loc.isMacroID())
|
|
|
|
isAtStartOfMacroExpansion(loc, &loc);
|
|
|
|
|
|
|
|
const SourceManager &SM = SourceMgr;
|
2018-02-10 07:30:07 +08:00
|
|
|
loc = SM.getTopMacroCallerLoc(loc);
|
2012-03-07 04:06:33 +08:00
|
|
|
|
|
|
|
if (loc.isMacroID())
|
|
|
|
if (!isAtStartOfMacroExpansion(loc, &loc))
|
|
|
|
return false;
|
|
|
|
|
2014-04-28 10:38:51 +08:00
|
|
|
if (SM.isInSystemHeader(loc))
|
2012-03-07 04:06:33 +08:00
|
|
|
return false;
|
|
|
|
|
|
|
|
std::pair<FileID, unsigned> locInfo = SM.getDecomposedLoc(loc);
|
|
|
|
if (locInfo.first.isInvalid())
|
|
|
|
return false;
|
|
|
|
offs = FileOffset(locInfo.first, locInfo.second);
|
|
|
|
return canInsertInOffset(loc, offs);
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Commit::canInsertAfterToken(SourceLocation loc, FileOffset &offs,
|
|
|
|
SourceLocation &AfterLoc) {
|
|
|
|
if (loc.isInvalid())
|
|
|
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
SourceLocation spellLoc = SourceMgr.getSpellingLoc(loc);
|
|
|
|
unsigned tokLen = Lexer::MeasureTokenLength(spellLoc, SourceMgr, LangOpts);
|
|
|
|
AfterLoc = loc.getLocWithOffset(tokLen);
|
|
|
|
|
|
|
|
if (loc.isMacroID())
|
|
|
|
isAtEndOfMacroExpansion(loc, &loc);
|
|
|
|
|
|
|
|
const SourceManager &SM = SourceMgr;
|
2018-02-10 07:30:07 +08:00
|
|
|
loc = SM.getTopMacroCallerLoc(loc);
|
2012-03-07 04:06:33 +08:00
|
|
|
|
|
|
|
if (loc.isMacroID())
|
|
|
|
if (!isAtEndOfMacroExpansion(loc, &loc))
|
|
|
|
return false;
|
|
|
|
|
2014-04-28 10:38:51 +08:00
|
|
|
if (SM.isInSystemHeader(loc))
|
2012-03-07 04:06:33 +08:00
|
|
|
return false;
|
|
|
|
|
|
|
|
loc = Lexer::getLocForEndOfToken(loc, 0, SourceMgr, LangOpts);
|
|
|
|
if (loc.isInvalid())
|
|
|
|
return false;
|
|
|
|
|
|
|
|
std::pair<FileID, unsigned> locInfo = SM.getDecomposedLoc(loc);
|
|
|
|
if (locInfo.first.isInvalid())
|
|
|
|
return false;
|
|
|
|
offs = FileOffset(locInfo.first, locInfo.second);
|
|
|
|
return canInsertInOffset(loc, offs);
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Commit::canInsertInOffset(SourceLocation OrigLoc, FileOffset Offs) {
|
2018-03-27 08:01:49 +08:00
|
|
|
for (const auto &act : CachedEdits)
|
2012-03-07 04:06:33 +08:00
|
|
|
if (act.Kind == Act_Remove) {
|
|
|
|
if (act.Offset.getFID() == Offs.getFID() &&
|
|
|
|
Offs > act.Offset && Offs < act.Offset.getWithOffset(act.Length))
|
|
|
|
return false; // position has been removed.
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!Editor)
|
|
|
|
return true;
|
|
|
|
return Editor->canInsertInOffset(OrigLoc, Offs);
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Commit::canRemoveRange(CharSourceRange range,
|
|
|
|
FileOffset &Offs, unsigned &Len) {
|
|
|
|
const SourceManager &SM = SourceMgr;
|
|
|
|
range = Lexer::makeFileCharRange(range, SM, LangOpts);
|
|
|
|
if (range.isInvalid())
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (range.getBegin().isMacroID() || range.getEnd().isMacroID())
|
|
|
|
return false;
|
2014-04-28 10:38:51 +08:00
|
|
|
if (SM.isInSystemHeader(range.getBegin()) ||
|
|
|
|
SM.isInSystemHeader(range.getEnd()))
|
2012-03-07 04:06:33 +08:00
|
|
|
return false;
|
|
|
|
|
|
|
|
if (PPRec && PPRec->rangeIntersectsConditionalDirective(range.getAsRange()))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
std::pair<FileID, unsigned> beginInfo = SM.getDecomposedLoc(range.getBegin());
|
|
|
|
std::pair<FileID, unsigned> endInfo = SM.getDecomposedLoc(range.getEnd());
|
|
|
|
if (beginInfo.first != endInfo.first ||
|
|
|
|
beginInfo.second > endInfo.second)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
Offs = FileOffset(beginInfo.first, beginInfo.second);
|
|
|
|
Len = endInfo.second - beginInfo.second;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Commit::canReplaceText(SourceLocation loc, StringRef text,
|
|
|
|
FileOffset &Offs, unsigned &Len) {
|
|
|
|
assert(!text.empty());
|
|
|
|
|
|
|
|
if (!canInsert(loc, Offs))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
// Try to load the file buffer.
|
|
|
|
bool invalidTemp = false;
|
|
|
|
StringRef file = SourceMgr.getBufferData(Offs.getFID(), &invalidTemp);
|
|
|
|
if (invalidTemp)
|
|
|
|
return false;
|
|
|
|
|
2012-06-28 07:45:44 +08:00
|
|
|
Len = text.size();
|
2012-03-07 04:06:33 +08:00
|
|
|
return file.substr(Offs.getOffset()).startswith(text);
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Commit::isAtStartOfMacroExpansion(SourceLocation loc,
|
|
|
|
SourceLocation *MacroBegin) const {
|
|
|
|
return Lexer::isAtStartOfMacroExpansion(loc, SourceMgr, LangOpts, MacroBegin);
|
|
|
|
}
|
2018-03-27 08:01:49 +08:00
|
|
|
|
2012-03-07 04:06:33 +08:00
|
|
|
bool Commit::isAtEndOfMacroExpansion(SourceLocation loc,
|
|
|
|
SourceLocation *MacroEnd) const {
|
|
|
|
return Lexer::isAtEndOfMacroExpansion(loc, SourceMgr, LangOpts, MacroEnd);
|
|
|
|
}
|