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Better handling of merge conflict markers

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This commit is contained in:
Brian Fiete 2020-09-20 22:12:46 -07:00
parent 31ac632ea6
commit c76c19e852
3 changed files with 185 additions and 31 deletions
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153
IDEHelper/Compiler/BfParser.cpp
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@ -885,8 +885,8 @@ void BfParser::HandleIncludeNext(BfAstNode* paramNode)
}
void BfParser::HandlePreprocessor()
{
bool BfParser::HandlePreprocessor()
{
int triviaStart = mTriviaStart;
int checkIdx = 0;
@ -896,6 +896,8 @@ void BfParser::HandlePreprocessor()
{
if (mPreprocessorIgnoreDepth == 0)
{
if (mSrc[mSrcIdx - 1] != '#')
return false;
mPassInstance->FailAt("Preprocessor directives must appear as the first non-whitespace character on a line", mSourceData, checkIdx);
break;
}
@ -907,6 +909,25 @@ void BfParser::HandlePreprocessor()
String pragma;
String pragmaParam;
switch (mSrc[mSrcIdx - 1])
{
case '<':
if (mPreprocessorIgnoreDepth > 0)
return false;
pragma = "<<<";
break;
case '=':
if (mPreprocessorIgnoreDepth > 0)
return false;
pragma = "===";
break;
case '>':
if (mPreprocessorIgnoreDepth > 1)
return false;
pragma = ">>>";
break;
}
bool atEnd = false;
int startIdx = mSrcIdx - 1;
@ -945,8 +966,16 @@ void BfParser::HandlePreprocessor()
if (charIdx == -1)
{
if (!IsWhitespaceOrPunctuation(c))
charIdx = mSrcIdx - 1;
if (!pragma.IsEmpty())
{
if (!IsWhitespace(c))
charIdx = mSrcIdx - 1;
}
else
{
if (!IsWhitespaceOrPunctuation(c))
charIdx = mSrcIdx - 1;
}
}
else if ((IsWhitespaceOrPunctuation(c)) && (spaceIdx == -1))
spaceIdx = mSrcIdx - 1;
@ -955,7 +984,7 @@ void BfParser::HandlePreprocessor()
if (charIdx == -1)
{
mPassInstance->FailAt("Preprocessor directive expected", mSourceData, startIdx);
return;
return true;
}
int endIdx = mSrcIdx - 1;
@ -967,25 +996,32 @@ void BfParser::HandlePreprocessor()
}
BfBlock* paramNode = NULL;
if (spaceIdx != -1)
{
pragma = String(mSrc + charIdx, mSrc + spaceIdx);
int breakIdx = spaceIdx;
while (spaceIdx <= endIdx)
if (pragma.IsEmpty())
{
if (spaceIdx != -1)
{
if (!isspace((uint8)mSrc[spaceIdx]))
break;
spaceIdx++;
}
if (spaceIdx <= endIdx)
pragmaParam = String(mSrc + spaceIdx, mSrc + endIdx + 1);
pragma = String(mSrc + charIdx, mSrc + spaceIdx);
int breakIdx = spaceIdx;
while (spaceIdx <= endIdx)
{
if (!isspace((uint8)mSrc[spaceIdx]))
break;
spaceIdx++;
}
if (spaceIdx <= endIdx)
pragmaParam = String(mSrc + spaceIdx, mSrc + endIdx + 1);
paramNode = ParseInlineBlock(breakIdx, endIdx);
paramNode = ParseInlineBlock(breakIdx, endIdx);
}
else
{
pragma = String(mSrc + charIdx, mSrc + endIdx + 1);
mSrcIdx = endIdx + 1;
}
}
else
{
pragma = String(mSrc + charIdx, mSrc + endIdx + 1);
mSrcIdx = endIdx + 1;
mSrcIdx--;
}
bool wantsSingleParam = true;
@ -997,11 +1033,11 @@ void BfParser::HandlePreprocessor()
BF_ASSERT(!mPreprocessorNodeStack.empty());
int ignoreEnd = std::max(mPreprocessorIgnoredSectionNode->GetSrcStart(), mLineStart - 1);
if (pragma == "endif")
if ((pragma == "endif") || (pragma == ">>>"))
{
mPreprocessorIgnoreDepth--;
if (mPreprocessorIgnoreDepth > 0)
return;
return true;
mPreprocessorNodeStack.pop_back();
mPreprocessorIgnoredSectionNode->SetSrcEnd(ignoreEnd);
mPreprocessorIgnoredSectionNode = NULL;
@ -1037,7 +1073,7 @@ void BfParser::HandlePreprocessor()
{
mPreprocessorIgnoredSectionStarts.insert(mSrcIdx);
}
return;
return true;
}
}
}
@ -1077,18 +1113,24 @@ void BfParser::HandlePreprocessor()
}
if (mPreprocessorIgnoreDepth > 0)
return;
return true;
}
else
{
if ((pragma == "if") ||
if ((pragma == "if") || (pragma == "<<<") ||
((mCompatMode) && (pragma == "ifdef")) ||
((mCompatMode) && (pragma == "ifndef")))
{
wantsSingleParam = false;
wantedParam = true;
bool found = false;
if (!mQuickCompatMode)
if (pragma == "<<<")
{
mPassInstance->FailAt("Conflict marker found", mSourceData, startIdx, endIdx - startIdx + 1);
wantedParam = false;
found = true;
}
else if (!mQuickCompatMode)
{
if (pragma == "if")
found = HandleProcessorCondition(paramNode) != MaybeBool_False;
@ -1108,7 +1150,7 @@ void BfParser::HandlePreprocessor()
mPreprocessorIgnoreDepth = 1;
}
}
else if (pragma == "else")
else if ((pragma == "else") || (pragma == "==="))
{
if (!mQuickCompatMode && !mCompleteParse)
{
@ -1251,6 +1293,8 @@ void BfParser::HandlePreprocessor()
mSidechannelRootNode->Add(mPreprocessorIgnoredSectionNode);
mPendingSideNodes.push_back(mPreprocessorIgnoredSectionNode);
}
return true;
}
static int ValSign(int64 val)
@ -1350,7 +1394,11 @@ void BfParser::NextToken(int endIdx)
break;
}
if ((c != '#') || (!isLineStart))
if ((c == '>') && (mSrc[mSrcIdx] == '>') && (mSrc[mSrcIdx + 1] == '>'))
{
// Allow through
}
else if ((c != '#') || (!isLineStart))
{
if (c == '\n')
{
@ -1393,9 +1441,26 @@ void BfParser::NextToken(int endIdx)
{
if (mSrc[mSrcIdx + 1] == '=')
{
mToken = BfToken_CompareStrictEquals;
++mSrcIdx;
mTokenEnd = ++mSrcIdx;
if (mSrc[mSrcIdx + 2] == '=')
{
if (HandlePreprocessor())
{
// Conflict split
break;
}
else
{
mToken = BfToken_CompareStrictEquals;
++mSrcIdx;
mTokenEnd = ++mSrcIdx;
}
}
else
{
mToken = BfToken_CompareStrictEquals;
++mSrcIdx;
mTokenEnd = ++mSrcIdx;
}
}
else
{
@ -1526,6 +1591,20 @@ void BfParser::NextToken(int endIdx)
mToken = BfToken_ShiftLeftEquals;
mTokenEnd = ++mSrcIdx;
}
else if (mSrc[mSrcIdx] == '<')
{
mSrcIdx--;
if (HandlePreprocessor())
{
// Conflict end
break;
}
else
{
mSrcIdx++;
mToken = BfToken_LDblChevron;
}
}
else
mToken = BfToken_LDblChevron;
}
@ -1556,6 +1635,20 @@ void BfParser::NextToken(int endIdx)
mToken = BfToken_ShiftRightEquals;
mTokenEnd = ++mSrcIdx;
}
else if (mSrc[mSrcIdx] == '>')
{
mSrcIdx--;
if (HandlePreprocessor())
{
// Conflict start
break;
}
else
{
mSrcIdx++;
mToken = BfToken_RDblChevron;
}
}
else
mToken = BfToken_RDblChevron;
}