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[yul-phaser] Phaser: Extract preparation of option description into a separate function

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This commit is contained in:
Kamil Śliwak 2020-02-21 19:23:33 +01:00
parent 2d177c7623
commit 7cf5c4e266
2 changed files with 26 additions and 9 deletions
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28
tools/yulPhaser/Phaser.cpp
View File

@ -158,9 +158,12 @@ int Phaser::main(int _argc, char** _argv)
return 0;
}
Phaser::CommandLineParsingResult Phaser::parseCommandLine(int _argc, char** _argv)
Phaser::CommandLineDescription Phaser::buildCommandLineDescription()
{
po::options_description description(
size_t const lineLength = po::options_description::m_default_line_length;
size_t const minDescriptionLength = lineLength - 23;
po::options_description keywordDescription(
"yul-phaser, a tool for finding the best sequence of Yul optimisation phases.\n"
"\n"
"Usage: yul-phaser [options] <file>\n"
@ -170,11 +173,10 @@ Phaser::CommandLineParsingResult Phaser::parseCommandLine(int _argc, char** _arg
"yul-phaser program.yul\n"
"\n"
"Allowed options",
po::options_description::m_default_line_length,
po::options_description::m_default_line_length - 23
lineLength,
minDescriptionLength
);
description.add_options()
keywordDescription.add_options()
("help", "Show help message and exit.")
("input-file", po::value<string>()->required(), "Input file")
("seed", po::value<uint32_t>(), "Seed for the random number generator")
@ -186,14 +188,22 @@ Phaser::CommandLineParsingResult Phaser::parseCommandLine(int _argc, char** _arg
;
po::positional_options_description positionalDescription;
po::variables_map arguments;
positionalDescription.add("input-file", 1);
return {keywordDescription, positionalDescription};
}
Phaser::CommandLineParsingResult Phaser::parseCommandLine(int _argc, char** _argv)
{
auto [keywordDescription, positionalDescription] = buildCommandLineDescription();
po::variables_map arguments;
po::notify(arguments);
try
{
po::command_line_parser parser(_argc, _argv);
parser.options(description).positional(positionalDescription);
parser.options(keywordDescription).positional(positionalDescription);
po::store(parser.run(), arguments);
}
catch (po::error const & _exception)
@ -204,7 +214,7 @@ Phaser::CommandLineParsingResult Phaser::parseCommandLine(int _argc, char** _arg
if (arguments.count("help") > 0)
{
cout << description << endl;
cout << keywordDescription << endl;
return {2, move(arguments)};
}

7
tools/yulPhaser/Phaser.h
View File

@ -131,12 +131,19 @@ public:
static int main(int argc, char** argv);
private:
struct CommandLineDescription
{
boost::program_options::options_description keywordDescription;
boost::program_options::positional_options_description positionalDescription;
};
struct CommandLineParsingResult
{
int exitCode;
boost::program_options::variables_map arguments;
};
static CommandLineDescription buildCommandLineDescription();
static CommandLineParsingResult parseCommandLine(int _argc, char** _argv);
static void initialiseRNG(boost::program_options::variables_map const& _arguments);