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Performance: Replace string by special single-copy YulString class.

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This commit is contained in:
chriseth
2018-11-07 19:30:27 +01:00
parent 0a96f091ab
commit 674e17c2a8
59 changed files with 351 additions and 243 deletions
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libyul/optimiser/NameDispenser.cpp
+8 -8
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@@ -33,31 +33,31 @@ NameDispenser::NameDispenser(Block const& _ast):
{
}
NameDispenser::NameDispenser(set<string> _usedNames):
NameDispenser::NameDispenser(set<YulString> _usedNames):
m_usedNames(std::move(_usedNames))
{
}
string NameDispenser::newName(string const& _nameHint, string const& _context)
YulString NameDispenser::newName(YulString _nameHint, YulString _context)
{
// Shortening rules: Use a suffix of _prefix and a prefix of _context.
string prefix = _nameHint;
YulString prefix = _nameHint;
if (!_context.empty())
prefix = _context.substr(0, 10) + "_" + prefix;
prefix = YulString{_context.str().substr(0, 10) + "_" + prefix.str()};
return newNameInternal(prefix);
}
string NameDispenser::newNameInternal(string const& _nameHint)
YulString NameDispenser::newNameInternal(YulString _nameHint)
{
YulString name = _nameHint;
size_t suffix = 0;
string name = _nameHint;
while (name.empty() || m_usedNames.count(name))
{
suffix++;
name = _nameHint + "_" + to_string(suffix);
name = YulString(_nameHint.str() + "_" + to_string(suffix));
}
m_usedNames.insert(name);
m_usedNames.emplace(name);
return name;
}