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[C++] Always output a #line as first line of the pp output.

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Change-Id: I60d25109ae8fe3628b1899078a21010263787c33
Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>
This commit is contained in:
Erik Verbruggen
2012-03-30 13:01:32 +02:00
parent 5001982e50
commit ff0a465403
15 changed files with 48 additions and 25 deletions
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42
src/libs/cplusplus/pp-engine.cpp
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@@ -624,6 +624,16 @@ Preprocessor::State Preprocessor::createStateFromSource(const QString &fileName,
return state;
}
void Preprocessor::genLine(unsigned lineno, const QByteArray &fileName) const
{
startNewOutputLine();
out("# ");
out(QByteArray::number(lineno));
out(" \"");
out(fileName);
out("\"\n");
}
void Preprocessor::handleDefined(PPToken *tk)
{
unsigned lineno = tk->lineno;
@@ -678,8 +688,8 @@ _Lagain:
m_state.m_lexer->scan(tk);
}
if (tk->isValid() && !tk->generated() && !tk->is(T_EOF_SYMBOL))
m_env->currentLine = tk->lineno;
// if (tk->isValid() && !tk->generated() && !tk->is(T_EOF_SYMBOL))
// m_env->currentLine = tk->lineno;
_Lclassify:
if (! m_state.m_inPreprocessorDirective) {
@@ -906,12 +916,13 @@ void Preprocessor::preprocess(const QString &fileName, const QByteArray &source,
m_env->currentFile = fileName;
const unsigned previousCurrentLine = m_env->currentLine;
m_env->currentLine = 0;
m_env->currentLine = 1;
const QByteArray fn = fileName.toUtf8();
if (!m_state.m_noLines)
genLine(1, fn);
PPToken tk(m_state.m_source), prevTk;
unsigned lineno = 1;
do {
_Lrestart:
bool forceLine = false;
@@ -927,30 +938,25 @@ _Lrestart:
if (m_state.m_markGeneratedTokens && tk.generated() && !prevTk.generated()) {
startNewOutputLine();
out("#gen true\n");
++lineno;
++m_env->currentLine;
forceLine = true;
} else if (m_state.m_markGeneratedTokens && !tk.generated() && prevTk.generated()) {
startNewOutputLine();
out("#gen false\n");
++lineno;
++m_env->currentLine;
forceLine = true;
}
if (forceLine || lineno != tk.lineno) {
if (forceLine || lineno > tk.lineno || tk.lineno - lineno > 3) {
if (forceLine || m_env->currentLine != tk.lineno) {
if (forceLine || m_env->currentLine > tk.lineno || tk.lineno - m_env->currentLine > 3) {
if (m_state.m_noLines) {
if (!m_state.m_markGeneratedTokens)
out(' ');
} else {
startNewOutputLine();
out("# ");
out(QByteArray::number(tk.lineno));
out(" \"");
out(fn);
out("\"\n");
genLine(tk.lineno, fn);
}
} else {
for (unsigned i = lineno; i < tk.lineno; ++i)
for (unsigned i = m_env->currentLine; i < tk.lineno; ++i)
out('\n');
}
} else {
@@ -961,7 +967,7 @@ _Lrestart:
if (tk.whitespace() || prevTk.generated() != tk.generated() || !prevTk.isValid()) {
if (prevTk.generated() && tk.generated()) {
out(' ');
} else if (tk.isValid() && !prevTk.isValid() && tk.lineno == lineno) {
} else if (tk.isValid() && !prevTk.isValid() && tk.lineno == m_env->currentLine) {
out(QByteArray(prevTk.length() + (tk.whitespace() ? 1 : 0), ' '));
} else if (prevTk.generated() != tk.generated() || !prevTk.isValid()) {
const char *begin = tk.source().constBegin();
@@ -988,9 +994,9 @@ _Lrestart:
const ByteArrayRef tkBytes = tk.asByteArrayRef();
out(tkBytes);
lineno = tk.lineno;
m_env->currentLine = tk.lineno;
if (tk.is(T_COMMENT) || tk.is(T_DOXY_COMMENT))
lineno += tkBytes.count('\n');
m_env->currentLine += tkBytes.count('\n');
prevTk = tk;
} while (tk.isNot(T_EOF_SYMBOL));