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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "catchcodeparser.h"
#include <cplusplus/Token.h>
#include <utils/qtcassert.h>
#include <QRegularExpression>
namespace Autotest {
namespace Internal {
using namespace CPlusPlus;
CatchCodeParser::CatchCodeParser(const QByteArray &source, const LanguageFeatures &features)
: m_source(source)
, m_features(features)
{
}
static CatchTestCodeLocationAndType locationAndTypeFromToken(const Token &tkn)
{
CatchTestCodeLocationAndType locationAndType;
locationAndType.m_type = TestTreeItem::TestCase;
locationAndType.m_line = tkn.lineno;
locationAndType.m_column = 0;
return locationAndType;
}
static Tokens tokensForSource(const QByteArray &source, const LanguageFeatures &features)
{
SimpleLexer lexer;
lexer.setPreprocessorMode(false); // or true? does not make a difference so far..
lexer.setLanguageFeatures(features);
return lexer(QString::fromUtf8(source));
}
static QStringList parseTags(const QString &tagsString)
{
QStringList tagsList;
const QRegularExpression tagRegEx("\\[(.*?)\\]",QRegularExpression::CaseInsensitiveOption);
int pos = 0;
QRegularExpressionMatch it = tagRegEx.match(tagsString, pos);
while (it.hasMatch()) {
tagsList.append(it.captured(1));
pos += it.capturedLength();
it = tagRegEx.match(tagsString, pos);
}
return tagsList;
}
CatchTestCodeLocationList CatchCodeParser::findTests()
{
m_tokens = tokensForSource(m_source, m_features);
m_currentIndex = 0;
for ( ; m_currentIndex < m_tokens.size(); ++m_currentIndex) {
if (m_tokens.at(m_currentIndex).kind() == T_IDENTIFIER)
handleIdentifier();
}
return m_testCases;
}
void CatchCodeParser::handleIdentifier()
{
QTC_ASSERT(m_currentIndex < m_tokens.size(), return);
const Token &token = m_tokens.at(m_currentIndex);
const QByteArray &identifier = m_source.mid(int(token.bytesBegin()), int(token.bytes()));
const QByteArray unprefixed = identifier.startsWith("CATCH_") ? identifier.mid(6) : identifier;
if (unprefixed == "TEST_CASE") {
handleTestCase(false);
} else if (unprefixed == "SCENARIO") {
handleTestCase(true);
} else if (unprefixed == "TEMPLATE_TEST_CASE" || unprefixed == "TEMPLATE_PRODUCT_TEST_CASE"
|| unprefixed == "TEMPLATE_LIST_TEST_CASE" || unprefixed == "TEMPLATE_TEST_CASE_SIG"
|| unprefixed == "TEMPLATE_PRODUCT_TEST_CASE_SIG") {
handleParameterizedTestCase(false);
} else if (unprefixed == "TEST_CASE_METHOD") {
handleFixtureOrRegisteredTestCase(true);
} else if (unprefixed == "TEMPLATE_TEST_CASE_METHOD_SIG"
|| unprefixed == "TEMPLATE_PRODUCT_TEST_CASE_METHOD_SIG"
|| unprefixed == "TEMPLATE_TEST_CASE_METHOD"
|| unprefixed == "TEMPLATE_LIST_TEST_CASE_METHOD") {
handleParameterizedTestCase(true);
} else if (unprefixed == "METHOD_AS_TEST_CASE" || unprefixed == "REGISTER_TEST_CASE") {
handleFixtureOrRegisteredTestCase(false);
}
}
void CatchCodeParser::handleTestCase(bool isScenario)
{
if (!skipCommentsUntil(T_LPAREN))
return;
CatchTestCodeLocationAndType locationAndType
= locationAndTypeFromToken(m_tokens.at(m_currentIndex));
Kind stoppedAt;
++m_currentIndex;
QString testCaseName = getStringLiteral(stoppedAt);
QString tagsString; // TODO: use them
if (stoppedAt == T_COMMA) {
++m_currentIndex;
tagsString = getStringLiteral(stoppedAt);
}
if (stoppedAt != T_RPAREN)
return;
if (isScenario)
testCaseName.prepend("Scenario: "); // use a flag?
locationAndType.m_name = testCaseName;
locationAndType.tags = parseTags(tagsString);
m_testCases.append(locationAndType);
}
void CatchCodeParser::handleParameterizedTestCase(bool isFixture)
{
if (!skipCommentsUntil(T_LPAREN))
return;
if (isFixture && !skipFixtureParameter())
return;
CatchTestCodeLocationAndType locationAndType
= locationAndTypeFromToken(m_tokens.at(m_currentIndex));
Kind stoppedAt;
++m_currentIndex;
QString testCaseName = getStringLiteral(stoppedAt);
QString tagsString;
if (stoppedAt != T_COMMA)
return;
++m_currentIndex;
tagsString = getStringLiteral(stoppedAt);
if (stoppedAt == T_COMMA)
stoppedAt = skipUntilCorrespondingRParen();
if (stoppedAt != T_RPAREN)
return;
locationAndType.m_name = testCaseName;
locationAndType.tags = parseTags(tagsString);
locationAndType.states = CatchTreeItem::Parameterized;
if (isFixture)
locationAndType.states |= CatchTreeItem::Fixture;
m_testCases.append(locationAndType);
}
void CatchCodeParser::handleFixtureOrRegisteredTestCase(bool isFixture)
{
if (!skipCommentsUntil(T_LPAREN))
return;
if (isFixture) {
if (!skipFixtureParameter())
return;
} else {
if (!skipFunctionParameter())
return;
}
CatchTestCodeLocationAndType locationAndType
= locationAndTypeFromToken(m_tokens.at(m_currentIndex));
Kind stoppedAt;
++m_currentIndex;
QString testCaseName = getStringLiteral(stoppedAt);
QString tagsString;
if (stoppedAt == T_COMMA) {
++m_currentIndex;
tagsString = getStringLiteral(stoppedAt);
}
if (stoppedAt != T_RPAREN)
return;
locationAndType.m_name = testCaseName;
locationAndType.tags = parseTags(tagsString);
if (isFixture)
locationAndType.states = CatchTreeItem::Fixture;
m_testCases.append(locationAndType);
}
QString CatchCodeParser::getStringLiteral(Kind &stoppedAtKind)
{
QByteArray captured;
int end = m_tokens.size();
while (m_currentIndex < end) {
const Token token = m_tokens.at(m_currentIndex);
Kind kind = token.kind();
if (kind == T_STRING_LITERAL) {
// store the string without its quotes
captured.append(m_source.mid(token.bytesBegin() + 1, token.bytes() - 2));
} else if (kind == T_RPAREN || kind == T_COMMA) {
stoppedAtKind = kind;
return QString::fromUtf8(captured);
} else if (!token.isComment()) { // comments are okay - but anything else will cancel
stoppedAtKind = kind;
return {};
}
++m_currentIndex;
}
stoppedAtKind = T_ERROR;
return {};
}
bool CatchCodeParser::skipCommentsUntil(Kind nextExpectedKind)
{
for (int index = m_currentIndex + 1, end = m_tokens.size(); index < end; ++index) {
const Token &token = m_tokens.at(index);
if (token.isComment())
continue;
if (token.kind() != nextExpectedKind)
break;
m_currentIndex = index;
return true;
}
return false;
}
Kind CatchCodeParser::skipUntilCorrespondingRParen()
{
int openParens = 1; // we have already one open, looking for the corresponding closing
int end = m_tokens.size();
while (m_currentIndex < end) {
Kind kind = m_tokens.at(m_currentIndex).kind();
if (kind == T_LPAREN) {
++openParens;
} else if (kind == T_RPAREN) {
--openParens;
if (openParens == 0)
return T_RPAREN;
}
++m_currentIndex;
}
return T_ERROR;
}
bool CatchCodeParser::skipFixtureParameter()
{
if (!skipCommentsUntil(T_IDENTIFIER))
return false;
return skipCommentsUntil(T_COMMA);
}
bool CatchCodeParser::skipFunctionParameter()
{
if (!skipCommentsUntil(T_IDENTIFIER))
return false;
if (skipCommentsUntil(T_COLON_COLON))
return skipFunctionParameter();
return skipCommentsUntil(T_COMMA);
}
} // namespace Internal
} // namespace Autotest
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