catch2/include/internal/catch_test_spec_parser.hpp

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/*
* Created by Phil on 15/5/2013.
* Copyright 2014 Two Blue Cubes Ltd. All rights reserved.
*
* 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)
*/
#ifndef TWOBLUECUBES_CATCH_TEST_SPEC_PARSER_HPP_INCLUDED
#define TWOBLUECUBES_CATCH_TEST_SPEC_PARSER_HPP_INCLUDED
#include "catch_test_spec.h"
namespace Catch {
class TestSpecParser {
enum Mode{ None, Name, QuotedName, Tag };
Mode m_mode;
bool m_exclusion;
std::size_t m_start, m_pos;
std::string m_arg;
TestSpec::Filter m_currentFilter;
public:
TestSpec testSpec;
public:
TestSpecParser( std::string const& arg ) : m_mode( None ), m_exclusion( false ), m_start( std::string::npos ), m_arg( arg ) {
for( m_pos = 0; m_pos < m_arg.size(); ++m_pos )
visitChar( m_arg[m_pos] );
visitChar( ',' );
}
private:
void visitChar( char c ) {
if( m_mode == None ) {
switch( c ) {
case ' ': return;
case '~': m_exclusion = true; return;
case '[': return startNewMode( Tag, ++m_pos );
case '"': return startNewMode( QuotedName, ++m_pos );
default: startNewMode( Name, m_pos ); break;
}
}
if( m_mode == Name ) {
if( c == ',' ) {
addPattern<TestSpec::NamePattern>();
addFilter();
}
else if( c == '[' ) {
if( subString() == "exclude:" )
m_exclusion = true;
else
addPattern<TestSpec::NamePattern>();
startNewMode( Tag, ++m_pos );
}
}
else if( m_mode == QuotedName && c == '"' )
addPattern<TestSpec::NamePattern>();
else if( m_mode == Tag && c == ']' )
addPattern<TestSpec::TagPattern>();
}
void startNewMode( Mode mode, std::size_t start ) {
m_mode = mode;
m_start = start;
}
std::string subString() const { return m_arg.substr( m_start, m_pos - m_start ); }
template<typename T>
void addPattern() {
std::string token = subString();
if( startsWith( token, "exclude:" ) ) {
m_exclusion = true;
token = token.substr( 8 );
}
if( !token.empty() ) {
Ptr<TestSpec::Pattern> pattern = new T( token );
if( m_exclusion )
pattern = new TestSpec::ExcludedPattern( pattern );
m_currentFilter.m_patterns.push_back( pattern );
}
m_exclusion = false;
m_mode = None;
}
void addFilter() {
if( !m_currentFilter.m_patterns.empty() ) {
testSpec.m_filters.push_back( m_currentFilter );
m_currentFilter = TestSpec::Filter();
}
}
};
inline TestSpec parseTestSpec( std::string const& arg ) {
return TestSpecParser( arg ).testSpec;
}
} // namespace Catch
#endif // TWOBLUECUBES_CATCH_TEST_SPEC_PARSER_HPP_INCLUDED