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#include "options.h"
#include "diagnostics.h"
namespace CppParse
{
SlangResult OptionsParser::_parseArgFlag(const char* option, bool& outFlag)
{
SLANG_ASSERT(UnownedStringSlice(m_args[m_index]) == option);
SLANG_ASSERT(m_index < m_argCount);
m_index++;
outFlag = true;
return SLANG_OK;
}
SlangResult OptionsParser::_parseArgWithValue(const char* option, String& ioValue)
{
SLANG_ASSERT(UnownedStringSlice(m_args[m_index]) == option);
if (m_index + 1 < m_argCount)
{
// Next parameter is the output path, there can only be one
if (ioValue.getLength())
{
// There already is output
m_sink->diagnose(SourceLoc(), CPPDiagnostics::optionAlreadyDefined, option, ioValue);
return SLANG_FAIL;
}
}
else
{
m_sink->diagnose(SourceLoc(), CPPDiagnostics::requireValueAfterOption, option);
return SLANG_FAIL;
}
ioValue = m_args[m_index + 1];
m_index += 2;
return SLANG_OK;
}
SlangResult OptionsParser::_parseArgReplaceValue(const char* option, String& ioValue)
{
SLANG_ASSERT(UnownedStringSlice(m_args[m_index]) == option);
if (m_index + 1 >= m_argCount)
{
m_sink->diagnose(SourceLoc(), CPPDiagnostics::requireValueAfterOption, option);
return SLANG_FAIL;
}
ioValue = m_args[m_index + 1];
m_index += 2;
return SLANG_OK;
}
SlangResult OptionsParser::parse(
int argc,
const char* const* argv,
DiagnosticSink* sink,
Options& outOptions)
{
outOptions.reset();
m_index = 0;
m_argCount = argc;
m_args = argv;
m_sink = sink;
outOptions.reset();
while (m_index < m_argCount)
{
const UnownedStringSlice arg = UnownedStringSlice(argv[m_index]);
if (arg.getLength() > 0 && arg[0] == '-')
{
if (arg == "-d")
{
SLANG_RETURN_ON_FAIL(_parseArgWithValue("-d", outOptions.m_inputDirectory));
continue;
}
else if (arg == "-o")
{
SLANG_RETURN_ON_FAIL(_parseArgWithValue("-o", outOptions.m_outputPath));
continue;
}
else if (arg == "-dump")
{
SLANG_RETURN_ON_FAIL(_parseArgFlag("-dump", outOptions.m_dump));
continue;
}
else if (arg == "-mark-prefix")
{
SLANG_RETURN_ON_FAIL(
_parseArgReplaceValue("-mark-prefix", outOptions.m_markPrefix));
continue;
}
else if (arg == "-mark-suffix")
{
SLANG_RETURN_ON_FAIL(
_parseArgReplaceValue("-mark-suffix", outOptions.m_markSuffix));
continue;
}
else if (arg == "-defs")
{
SLANG_RETURN_ON_FAIL(_parseArgFlag("-defs", outOptions.m_defs));
continue;
}
else if (arg == "-output-fields")
{
SLANG_RETURN_ON_FAIL(_parseArgFlag("-output-fields", outOptions.m_outputFields));
continue;
}
else if (arg == "-strip-prefix")
{
SLANG_RETURN_ON_FAIL(
_parseArgWithValue("-strip-prefix", outOptions.m_stripFilePrefix));
continue;
}
else if (arg == "-unit-test")
{
SLANG_RETURN_ON_FAIL(_parseArgFlag("-unit-test", outOptions.m_runUnitTests));
continue;
}
else if (arg == "-unmarked")
{
bool unmarked;
SLANG_RETURN_ON_FAIL(_parseArgFlag("-unmarked", unmarked));
outOptions.m_requireMark = !unmarked;
continue;
}
m_sink->diagnose(SourceLoc(), CPPDiagnostics::unknownOption, arg);
return SLANG_FAIL;
}
else
{
// If it doesn't start with - then it's assumed to be an input path
outOptions.m_inputPaths.add(arg);
m_index++;
}
}
if (outOptions.m_inputPaths.getCount() < 0)
{
m_sink->diagnose(SourceLoc(), CPPDiagnostics::noInputPathsSpecified);
return SLANG_FAIL;
}
return SLANG_OK;
}
} // namespace CppParse
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