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C++: Fix macro uses line info

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Make sure the environment line is consistent during preprocessor
directives and identifier handling so clients can rely on consistent
information. Particularly important for macro usages.

New tests also added.

Change-Id: I962a39a86cd17b8d945d2959c2c95e2d258ea3e6
Reviewed-by: hjk <qthjk@ovi.com>
This commit is contained in:
Leandro Melo
2012-05-29 12:37:55 +02:00
committed by hjk
parent 356d5cab23
commit ca7ac8c035
4 changed files with 85 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/libs/cplusplus/pp-engine.cpp
+29 -12
View File
@@ -539,6 +539,7 @@ Preprocessor::State::State()
, m_inCondition(false)
, m_inDefine(false)
, m_offsetRef(0)
, m_envLineRef(1)
{
m_skipping[m_ifLevel] = false;
m_trueTest[m_ifLevel] = false;
@@ -687,13 +688,16 @@ _Lagain:
m_state.m_lexer->scan(tk);
}
// if (tk->isValid() && !tk->generated() && !tk->is(T_EOF_SYMBOL))
// m_env->currentLine = tk->lineno;
_Lclassify:
if (! m_state.m_inPreprocessorDirective) {
// Bellow, during directive and identifier handling the current environment line is
// updated in accordance to "global" context in order for clients to rely on consistent
// information. Afterwards, it's restored until output is eventually processed.
if (tk->newline() && tk->is(T_POUND)) {
unsigned envLine = m_env->currentLine;
m_env->currentLine = tk->lineno + m_state.m_envLineRef - 1;
handlePreprocessorDirective(tk);
m_env->currentLine = envLine;
goto _Lclassify;
} else if (tk->newline() && skipping()) {
ScopedBoolSwap s(m_state.m_inPreprocessorDirective, true);
@@ -702,10 +706,16 @@ _Lclassify:
} while (isValidToken(*tk));
goto _Lclassify;
} else if (tk->is(T_IDENTIFIER) && !isQtReservedWord(tk->asByteArrayRef())) {
if (m_state.m_inCondition && tk->asByteArrayRef() == "defined")
if (m_state.m_inCondition && tk->asByteArrayRef() == "defined") {
handleDefined(tk);
else if (handleIdentifier(tk))
goto _Lagain;
} else {
unsigned envLine = m_env->currentLine;
m_env->currentLine = tk->lineno + m_state.m_envLineRef - 1;
bool willExpand = handleIdentifier(tk);
m_env->currentLine = envLine;
if (willExpand)
goto _Lagain;
}
}
}
}
@@ -803,7 +813,8 @@ bool Preprocessor::handleIdentifier(PPToken *tk)
argTks.last().begin() + argTks.last().length() - argTks.first().begin()));
}
m_client->startExpandingMacro(idTk.offset, *macro, macroNameRef, argRefs);
m_client->startExpandingMacro(m_state.m_offsetRef + idTk.offset, *macro, macroNameRef,
argRefs);
}
if (!handleFunctionLikeMacro(tk, macro, body, !m_state.m_inDefine, allArgTks)) {
@@ -812,7 +823,7 @@ bool Preprocessor::handleIdentifier(PPToken *tk)
return false;
}
} else if (m_client && !idTk.generated()) {
m_client->startExpandingMacro(idTk.offset, *macro, macroNameRef);
m_client->startExpandingMacro(m_state.m_offsetRef + idTk.offset, *macro, macroNameRef);
}
if (body.isEmpty()) {
@@ -929,7 +940,7 @@ exitNicely:
void Preprocessor::preprocess(const QString &fileName, const QByteArray &source,
QByteArray *result, bool noLines,
bool markGeneratedTokens, bool inCondition,
unsigned offset)
unsigned offsetRef, unsigned envLineRef)
{
if (source.isEmpty())
return;
@@ -948,7 +959,8 @@ void Preprocessor::preprocess(const QString &fileName, const QByteArray &source,
m_state.m_noLines = noLines;
m_state.m_markGeneratedTokens = markGeneratedTokens;
m_state.m_inCondition = inCondition;
m_state.m_offsetRef = offset;
m_state.m_offsetRef = offsetRef;
m_state.m_envLineRef = envLineRef;
const QString previousFileName = m_env->currentFile;
m_env->currentFile = fileName;
@@ -1249,8 +1261,12 @@ void Preprocessor::handleDefineDirective(PPToken *tk)
bodyTokens.push_back(*tk);
lex(tk);
if (eagerExpansion)
while (tk->is(T_IDENTIFIER) && !isQtReservedWord(tk->asByteArrayRef()) && handleIdentifier(tk))
while (tk->is(T_IDENTIFIER)
&& (!tk->newline() || tk->joined())
&& !isQtReservedWord(tk->asByteArrayRef())
&& handleIdentifier(tk)) {
lex(tk);
}
}
if (isQtReservedWord(ByteArrayRef(&macroName))) {
@@ -1305,7 +1321,8 @@ QByteArray Preprocessor::expand(PPToken *tk, PPToken *lastConditionToken)
// qDebug("*** Condition before: [%s]", condition.constData());
QByteArray result;
result.reserve(256);
preprocess(m_state.m_currentFileName, condition, &result, true, false, true, begin);
preprocess(m_state.m_currentFileName, condition, &result, true, false, true, begin,
m_env->currentLine);
result.squeeze();
// qDebug("*** Condition after: [%s]", result.constData());
src/libs/cplusplus/pp-engine.h
+2 -1
View File
@@ -92,7 +92,7 @@ private:
void preprocess(const QString &filename,
const QByteArray &source,
QByteArray *result, bool noLines, bool markGeneratedTokens, bool inCondition,
unsigned offset = 0);
unsigned offsetRef = 0, unsigned envLineRef = 1);
enum { MAX_LEVEL = 512 };
@@ -121,6 +121,7 @@ private:
bool m_inDefine;
unsigned m_offsetRef;
unsigned m_envLineRef;
};
void handleDefined(PPToken *tk);
src/plugins/cpptools/cppmodelmanager.cpp
+1 -3
View File
@@ -524,9 +524,7 @@ void CppPreprocessor::startExpandingMacro(unsigned offset,
if (! m_currentDoc)
return;
//qDebug() << "start expanding:" << macro.name() << "text:" << originalText;
m_currentDoc->addMacroUse(macro, offset, originalText.length(), env.currentLine,
actuals);
m_currentDoc->addMacroUse(macro, offset, originalText.length(), env.currentLine, actuals);
}
void CppPreprocessor::stopExpandingMacro(unsigned, const Macro &)
tests/auto/cplusplus/preprocessor/tst_preprocessor.cpp
+53 -1
View File
@@ -32,6 +32,7 @@
#include <QtTest>
#include <pp.h>
#include <QHash>
//TESTED_COMPONENT=src/libs/cplusplus
using namespace CPlusPlus;
@@ -117,13 +118,14 @@ public:
virtual void failedMacroDefinitionCheck(unsigned /*offset*/, const ByteArrayRef &/*name*/) {}
virtual void startExpandingMacro(unsigned offset,
const Macro &/*macro*/,
const Macro &macro,
const ByteArrayRef &originalText,
const QVector<MacroArgumentReference> &/*actuals*/
= QVector<MacroArgumentReference>())
{
m_expandedMacros.append(QByteArray(originalText.start(), originalText.length()));
m_expandedMacrosOffset.append(offset);
m_macroUsesLine.insert(macro.name(), m_env->currentLine);
}
virtual void stopExpandingMacro(unsigned /*offset*/, const Macro &/*macro*/) {}
@@ -227,6 +229,9 @@ public:
QList<unsigned> definedMacrosLine() const
{ return m_definedMacrosLine; }
QHash<QByteArray, unsigned> macroUsesLine() const
{ return m_macroUsesLine; }
private:
Environment *m_env;
QByteArray *m_output;
@@ -239,6 +244,7 @@ private:
QList<unsigned> m_expandedMacrosOffset;
QList<QByteArray> m_definedMacros;
QList<unsigned> m_definedMacrosLine;
QHash<QByteArray, unsigned> m_macroUsesLine;
};
QT_BEGIN_NAMESPACE
@@ -304,6 +310,7 @@ private slots:
void objmacro_expanding_as_fnmacro_notification();
void macro_definition_lineno();
void macro_uses();
void macro_uses_lines();
void macro_arguments_notificatin();
void unfinished_function_like_macro_call();
void nasty_macro_expansion();
@@ -466,6 +473,51 @@ void tst_Preprocessor::macro_uses()
QCOMPARE(client.definedMacrosLine(), QList<unsigned>() << 2 << 3);
}
void tst_Preprocessor::macro_uses_lines()
{
QByteArray buffer("#define FOO\n"
"FOO\n"
"\n"
"#define HEADER <test>\n"
"#include HEADER\n"
"\n"
"#define DECLARE(C, V) struct C {}; C V;\n"
"#define ABC X\n"
"DECLARE(Test, test)\n"
"\n"
"int abc;\n"
"#define NOTHING(C)\n"
"NOTHING(abc)\n"
"\n"
"#define ENABLE(FEATURE) (defined ENABLE_##FEATURE && ENABLE_##FEATURE)\n"
"#define ENABLE_COOL 1\n"
"void fill();\n"
"#if ENABLE(COOL)\n"
"class Cool {};\n"
"#endif\n"
"int cool = ENABLE_COOL;\n");
QByteArray output;
Environment env;
MockClient client(&env, &output);
Preprocessor preprocess(&client, &env);
preprocess.run(QLatin1String("<stdin>"), buffer);
QCOMPARE(client.macroUsesLine().value("FOO"), 2U);
QCOMPARE(client.macroUsesLine().value("HEADER"), 5U);
QCOMPARE(client.macroUsesLine().value("DECLARE"), 9U);
QCOMPARE(client.macroUsesLine().value("NOTHING"), 13U);
QCOMPARE(client.macroUsesLine().value("ENABLE"), 18U);
QCOMPARE(client.macroUsesLine().value("ENABLE_COOL"), 21U);
QCOMPARE(client.expandedMacrosOffset(), QList<unsigned>()
<< buffer.lastIndexOf("FOO")
<< buffer.lastIndexOf("HEADER")
<< buffer.lastIndexOf("DECLARE")
<< buffer.lastIndexOf("NOTHING")
<< buffer.lastIndexOf("ENABLE(COOL)")
<< buffer.lastIndexOf("ENABLE_COOL"));
}
void tst_Preprocessor::macro_definition_lineno()
{
Client *client = 0; // no client.