catch2/include/internal/catch_test_spec_parser.cpp

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2017-07-19 10:13:47 +02:00
/*
* 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.hpp"
namespace Catch {
TestSpecParser::TestSpecParser( ITagAliasRegistry const& tagAliases ) : m_tagAliases( &tagAliases ) {}
TestSpecParser& 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 TestSpecParser::testSpec() {
addFilter();
return m_testSpec;
}
void TestSpecParser::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 TestSpecParser::startNewMode( Mode mode, std::size_t start ) {
m_mode = mode;
m_start = start;
}
void TestSpecParser::escape() {
if( m_mode == None )
m_start = m_pos;
m_mode = EscapedName;
m_escapeChars.push_back( m_pos );
}
std::string TestSpecParser::subString() const { return m_arg.substr( m_start, m_pos - m_start ); }
void TestSpecParser::addFilter() {
if( !m_currentFilter.m_patterns.empty() ) {
m_testSpec.m_filters.push_back( m_currentFilter );
m_currentFilter = TestSpec::Filter();
}
}
TestSpec parseTestSpec( std::string const& arg ) {
return TestSpecParser( ITagAliasRegistry::get() ).parse( arg ).testSpec();
}
} // namespace Catch