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/*
* Created by Martin on 19/07/2017.
*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*/
#include "catch_test_spec_parser.h"
namespace Catch {
TestSpecParser::TestSpecParser( ITagAliasRegistry const& tagAliases ) : m_tagAliases( &tagAliases ) {}
TestSpecParser& TestSpecParser::parse( std::string const& arg ) {
m_mode = None;
m_exclusion = false;
m_arg = m_tagAliases->expandAliases( arg );
m_escapeChars.clear();
m_substring.reserve(m_arg.size());
m_patternName.reserve(m_arg.size());
m_realPatternPos = 0;
for( m_pos = 0; m_pos < m_arg.size(); ++m_pos )
//if visitChar fails
if( !visitChar( m_arg[m_pos] ) ){
m_testSpec.m_invalidArgs.push_back(arg);
break;
}
endMode();
return *this;
}
TestSpec TestSpecParser::testSpec() {
addFilter();
return m_testSpec;
}
bool TestSpecParser::visitChar( char c ) {
if( (m_mode != EscapedName) && (c == '\\') ) {
escape();
addCharToPattern(c);
return true;
}else if((m_mode != EscapedName) && (c == ',') ) {
return separate();
}
switch( m_mode ) {
case None:
if( processNoneChar( c ) )
return true;
break;
case Name:
processNameChar( c );
break;
case EscapedName:
endMode();
addCharToPattern(c);
return true;
default:
case Tag:
case QuotedName:
if( processOtherChar( c ) )
return true;
break;
}
m_substring += c;
if( !isControlChar( c ) ) {
m_patternName += c;
m_realPatternPos++;
}
return true;
}
// Two of the processing methods return true to signal the caller to return
// without adding the given character to the current pattern strings
bool TestSpecParser::processNoneChar( char c ) {
switch( c ) {
case ' ':
return true;
case '~':
m_exclusion = true;
return false;
case '[':
startNewMode( Tag );
return false;
case '"':
startNewMode( QuotedName );
return false;
default:
startNewMode( Name );
return false;
}
}
void TestSpecParser::processNameChar( char c ) {
if( c == '[' ) {
if( m_substring == "exclude:" )
m_exclusion = true;
else
endMode();
startNewMode( Tag );
}
}
bool TestSpecParser::processOtherChar( char c ) {
if( !isControlChar( c ) )
return false;
m_substring += c;
endMode();
return true;
}
void TestSpecParser::startNewMode( Mode mode ) {
m_mode = mode;
}
void TestSpecParser::endMode() {
switch( m_mode ) {
case Name:
case QuotedName:
return addNamePattern();
case Tag:
return addTagPattern();
case EscapedName:
revertBackToLastMode();
return;
case None:
default:
return startNewMode( None );
}
}
void TestSpecParser::escape() {
saveLastMode();
m_mode = EscapedName;
m_escapeChars.push_back(m_realPatternPos);
}
bool TestSpecParser::isControlChar( char c ) const {
switch( m_mode ) {
default:
return false;
case None:
return c == '~';
case Name:
return c == '[';
case EscapedName:
return true;
case QuotedName:
return c == '"';
case Tag:
return c == '[' || c == ']';
}
}
void TestSpecParser::addFilter() {
if( !m_currentFilter.m_patterns.empty() ) {
m_testSpec.m_filters.push_back( m_currentFilter );
m_currentFilter = TestSpec::Filter();
}
}
void TestSpecParser::saveLastMode() {
lastMode = m_mode;
}
void TestSpecParser::revertBackToLastMode() {
m_mode = lastMode;
}
bool TestSpecParser::separate() {
if( (m_mode==QuotedName) || (m_mode==Tag) ){
//invalid argument, signal failure to previous scope.
m_mode = None;
m_pos = m_arg.size();
m_substring.clear();
m_patternName.clear();
m_realPatternPos = 0;
return false;
}
endMode();
addFilter();
return true; //success
}
std::string TestSpecParser::preprocessPattern() {
std::string token = m_patternName;
for (std::size_t i = 0; i < m_escapeChars.size(); ++i)
token = token.substr(0, m_escapeChars[i] - i) + token.substr(m_escapeChars[i] - i + 1);
m_escapeChars.clear();
if (startsWith(token, "exclude:")) {
m_exclusion = true;
token = token.substr(8);
}
m_patternName.clear();
m_realPatternPos = 0;
return token;
}
void TestSpecParser::addNamePattern() {
auto token = preprocessPattern();
if (!token.empty()) {
TestSpec::PatternPtr pattern = std::make_shared<TestSpec::NamePattern>(token, m_substring);
if (m_exclusion)
pattern = std::make_shared<TestSpec::ExcludedPattern>(pattern);
m_currentFilter.m_patterns.push_back(pattern);
}
m_substring.clear();
m_exclusion = false;
m_mode = None;
}
void TestSpecParser::addTagPattern() {
auto token = preprocessPattern();
if (!token.empty()) {
// If the tag pattern is the "hide and tag" shorthand (e.g. [.foo])
// we have to create a separate hide tag and shorten the real one
if (token.size() > 1 && token[0] == '.') {
token.erase(token.begin());
TestSpec::PatternPtr pattern = std::make_shared<TestSpec::TagPattern>(".", m_substring);
if (m_exclusion) {
pattern = std::make_shared<TestSpec::ExcludedPattern>(pattern);
}
m_currentFilter.m_patterns.push_back(pattern);
}
TestSpec::PatternPtr pattern = std::make_shared<TestSpec::TagPattern>(token, m_substring);
if (m_exclusion) {
pattern = std::make_shared<TestSpec::ExcludedPattern>(pattern);
}
m_currentFilter.m_patterns.push_back(pattern);
}
m_substring.clear();
m_exclusion = false;
m_mode = None;
}
TestSpec parseTestSpec( std::string const& arg ) {
return TestSpecParser( ITagAliasRegistry::get() ).parse( arg ).testSpec();
}
} // namespace Catch
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