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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
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wpadded"
#endif
#include "catch_test_spec.hpp"
#include "catch_interfaces_tag_alias_registry.h"
namespace Catch {
class TestSpecParser {
enum Mode{ None, Name, QuotedName, Tag, EscapedName };
Mode m_mode;
bool m_exclusion;
std::size_t m_start, m_pos;
std::string m_arg;
std::vector<std::size_t> m_escapeChars;
TestSpec::Filter m_currentFilter;
TestSpec m_testSpec;
ITagAliasRegistry const* m_tagAliases;
public:
TestSpecParser( ITagAliasRegistry const& tagAliases ) :m_mode(None), m_exclusion(false), m_start(0), m_pos(0), m_tagAliases( &tagAliases ) {}
TestSpecParser& parse( std::string const& arg ) {
m_mode = None;
m_exclusion = false;
m_start = std::string::npos;
m_arg = m_tagAliases->expandAliases( arg );
m_escapeChars.clear();
for( m_pos = 0; m_pos < m_arg.size(); ++m_pos )
visitChar( m_arg[m_pos] );
if( m_mode == Name )
addPattern<TestSpec::NamePattern>();
return *this;
}
TestSpec testSpec() {
addFilter();
return m_testSpec;
}
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 );
case '\\': return escape();
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( c == '\\' )
escape();
}
else if( m_mode == EscapedName )
m_mode = Name;
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;
}
void escape() {
if( m_mode == None )
m_start = m_pos;
m_mode = EscapedName;
m_escapeChars.push_back( m_pos );
}
std::string subString() const { return m_arg.substr( m_start, m_pos - m_start ); }
template<typename T>
void addPattern() {
std::string token = subString();
for( size_t i = 0; i < m_escapeChars.size(); ++i )
token = token.substr( 0, m_escapeChars[i]-m_start-i ) + token.substr( m_escapeChars[i]-m_start-i+1 );
m_escapeChars.clear();
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() ) {
m_testSpec.m_filters.push_back( m_currentFilter );
m_currentFilter = TestSpec::Filter();
}
}
};
inline TestSpec parseTestSpec( std::string const& arg ) {
return TestSpecParser( ITagAliasRegistry::get() ).parse( arg ).testSpec();
}
} // namespace Catch
#ifdef __clang__
#pragma clang diagnostic pop
#endif
#endif // TWOBLUECUBES_CATCH_TEST_SPEC_PARSER_HPP_INCLUDED
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