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C++: Preprocessor output buffer is always present

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Change-Id: I896423172aed0e19feaaf9144ed5f18ba99c720b
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>
This commit is contained in:
hjk
2013-04-16 10:40:14 +02:00
parent a1c7c47cc0
commit c39b582e58
2 changed files with 31 additions and 39 deletions
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66
src/libs/cplusplus/pp-engine.cpp
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@@ -1202,16 +1202,13 @@ void Preprocessor::trackExpansionCycles(PPToken *tk)
} else if (m_state.m_expansionStatus == Expanding) {
m_state.m_expansionStatus = JustFinishedExpansion;
QByteArray *buffer = currentOutputBuffer();
if (!buffer)
return;
QByteArray &buffer = currentOutputBuffer();
maybeStartOutputLine();
// Offset and length of the macro invocation
char chunk[40];
qsnprintf(chunk, sizeof(chunk), "# expansion begin %d,%d", tk->offset, tk->length());
buffer->append(chunk);
buffer.append(chunk);
// Expanded tokens
unsigned generatedCount = 0;
@@ -1220,23 +1217,23 @@ void Preprocessor::trackExpansionCycles(PPToken *tk)
if (p.first) {
if (generatedCount) {
qsnprintf(chunk, sizeof(chunk), " ~%d", generatedCount);
buffer->append(chunk);
buffer.append(chunk);
generatedCount = 0;
}
qsnprintf(chunk, sizeof(chunk), " %d:%d", p.first, p.second);
buffer->append(chunk);
buffer.append(chunk);
} else {
++generatedCount;
}
}
if (generatedCount) {
qsnprintf(chunk, sizeof(chunk), " ~%d", generatedCount);
buffer->append(chunk);
buffer.append(chunk);
}
buffer->append('\n');
buffer->append(m_state.m_expansionResult);
buffer.append('\n');
buffer.append(m_state.m_expansionResult);
maybeStartOutputLine();
buffer->append("# expansion end\n");
buffer.append("# expansion end\n");
}
lex(tk);
@@ -1279,16 +1276,14 @@ void Preprocessor::synchronizeOutputLines(const PPToken &tk, bool forceLine)
void Preprocessor::removeTrailingOutputLines()
{
QByteArray *buffer = currentOutputBuffer();
if (buffer) {
int i = buffer->size() - 1;
while (i >= 0 && buffer->at(i) == '\n')
--i;
const int mightChop = buffer->size() - i - 1;
if (mightChop > 1) {
// Keep one new line at end.
buffer->chop(mightChop - 1);
}
QByteArray &buffer = currentOutputBuffer();
int i = buffer.size() - 1;
while (i >= 0 && buffer.at(i) == '\n')
--i;
const int mightChop = buffer.size() - i - 1;
if (mightChop > 1) {
// Keep one new line at end.
buffer.chop(mightChop - 1);
}
}
@@ -2044,40 +2039,37 @@ void Preprocessor::startSkippingBlocks(const Preprocessor::PPToken &tk) const
template <class T>
void Preprocessor::writeOutput(const T &t)
{
QByteArray *buffer = currentOutputBuffer();
if (buffer)
buffer->append(t);
currentOutputBuffer().append(t);
}
void Preprocessor::writeOutput(const ByteArrayRef &ref)
{
QByteArray *buffer = currentOutputBuffer();
if (buffer)
buffer->append(ref.start(), ref.length());
currentOutputBuffer().append(ref.start(), ref.length());
}
bool Preprocessor::atStartOfOutputLine() const
{
const QByteArray *buffer = currentOutputBuffer();
return (buffer && !buffer->isEmpty()) ? *(buffer->end() - 1) == '\n' : true;
const QByteArray &buffer = currentOutputBuffer();
return buffer.isEmpty() || buffer.endsWith('\n');
}
void Preprocessor::maybeStartOutputLine()
{
QByteArray *buffer = currentOutputBuffer();
if (buffer && !buffer->isEmpty() && *(buffer->end() - 1) != '\n')
QByteArray &buffer = currentOutputBuffer();
if (!buffer.isEmpty() && !buffer.endsWith('\n'))
writeOutput('\n');
}
const QByteArray *Preprocessor::currentOutputBuffer() const
const QByteArray &Preprocessor::currentOutputBuffer() const
{
if (m_state.m_expansionStatus == Expanding)
return &m_state.m_expansionResult;
return m_state.m_result;
return m_state.m_expansionResult;
return *m_state.m_result;
}
QByteArray *Preprocessor::currentOutputBuffer()
QByteArray &Preprocessor::currentOutputBuffer()
{
return const_cast<QByteArray *>(static_cast<const Preprocessor *>(this)->currentOutputBuffer());
if (m_state.m_expansionStatus == Expanding)
return m_state.m_expansionResult;
return *m_state.m_result;
}