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OptimiserSuite: Allow validating the optimisation sequence without executing it

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- Create a separate validateSequence() that can be used independently.
- Tweak the exception messages a bit to be usable as command-line errors
This commit is contained in:
Kamil Śliwak 2020-04-24 14:15:45 +02:00
parent e2c0e6331c
commit 69b79f848b
2 changed files with 22 additions and 10 deletions
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28
libyul/optimiser/Suite.cpp
View File

@ -253,22 +253,21 @@ map<char, string> const& OptimiserSuite::stepAbbreviationToNameMap()
return lookupTable;
}
void OptimiserSuite::runSequence(string const& _stepAbbreviations, Block& _ast)
void OptimiserSuite::validateSequence(string const& _stepAbbreviations)
{
string input = _stepAbbreviations;
boost::remove_erase(input, ' ');
boost::remove_erase(input, '\n');
bool insideLoop = false;
for (char abbreviation: input)
for (char abbreviation: _stepAbbreviations)
switch (abbreviation)
{
case ' ':
case '\n':
break;
case '[':
assertThrow(!insideLoop, OptimizerException, "Nested brackets not supported");
assertThrow(!insideLoop, OptimizerException, "Nested brackets are not supported");
insideLoop = true;
break;
case ']':
assertThrow(insideLoop, OptimizerException, "Unbalanced bracket");
assertThrow(insideLoop, OptimizerException, "Unbalanced brackets");
insideLoop = false;
break;
default:
@ -279,10 +278,19 @@ void OptimiserSuite::runSequence(string const& _stepAbbreviations, Block& _ast)
assertThrow(
stepAbbreviationToNameMap().find(abbreviation) != stepAbbreviationToNameMap().end(),
OptimizerException,
"Invalid optimisation step abbreviation"
"'"s + abbreviation + "' is not a valid step abbreviation"
);
}
assertThrow(!insideLoop, OptimizerException, "Unbalanced bracket");
assertThrow(!insideLoop, OptimizerException, "Unbalanced brackets");
}
void OptimiserSuite::runSequence(string const& _stepAbbreviations, Block& _ast)
{
validateSequence(_stepAbbreviations);
string input = _stepAbbreviations;
boost::remove_erase(input, ' ');
boost::remove_erase(input, '\n');
auto abbreviationsToSteps = [](string const& _sequence) -> vector<string>
{

4
libyul/optimiser/Suite.h
View File

@ -65,6 +65,10 @@ public:
std::set<YulString> const& _externallyUsedIdentifiers = {}
);
/// Ensures that specified sequence of step abbreviations is well-formed and can be executed.
/// @throw OptimizerException if the sequence is invalid
static void validateSequence(std::string const& _stepAbbreviations);
void runSequence(std::vector<std::string> const& _steps, Block& _ast);
void runSequence(std::string const& _stepAbbreviations, Block& _ast);
void runSequenceUntilStable(