Regex: Cleanup character class parsing a bit
This commit is contained in:
parent
236751cb84
commit
337e58d4f9
|
@ -162,7 +162,6 @@ private:
|
|||
case 'K': m_pos += 2; return new_node(ParsedRegex::ResetStart);
|
||||
}
|
||||
break;
|
||||
/* TODO: look ahead, look behind */
|
||||
}
|
||||
return nullptr;
|
||||
}
|
||||
|
@ -267,18 +266,17 @@ private:
|
|||
}
|
||||
|
||||
// CharacterClassEscape
|
||||
for (auto& character_class : character_class_escapes)
|
||||
auto class_it = find_if(character_class_escapes,
|
||||
[cp = to_lower(cp)](auto& c) { return c.cp == cp; });
|
||||
if (class_it != std::end(character_class_escapes))
|
||||
{
|
||||
if (character_class.cp == cp)
|
||||
{
|
||||
auto matcher_id = m_parsed_regex.matchers.size();
|
||||
m_parsed_regex.matchers.push_back(
|
||||
[ctype = character_class.ctype ? wctype(character_class.ctype) : (wctype_t)0,
|
||||
chars = character_class.additional_chars, neg = character_class.neg] (Codepoint cp) {
|
||||
return ((ctype != 0 and iswctype(cp, ctype)) or contains(chars, cp)) != neg;
|
||||
});
|
||||
return new_node(ParsedRegex::Matcher, matcher_id);
|
||||
}
|
||||
auto matcher_id = m_parsed_regex.matchers.size();
|
||||
m_parsed_regex.matchers.push_back(
|
||||
[ctype = class_it->ctype ? wctype(class_it->ctype) : (wctype_t)0,
|
||||
chars = class_it->additional_chars, neg = is_upper(cp)] (Codepoint cp) {
|
||||
return ((ctype != 0 and iswctype(cp, ctype)) or contains(chars, cp)) != neg;
|
||||
});
|
||||
return new_node(ParsedRegex::Matcher, matcher_id);
|
||||
}
|
||||
|
||||
// CharacterEscape
|
||||
|
@ -323,14 +321,15 @@ private:
|
|||
if (cp == '\\')
|
||||
{
|
||||
auto it = find_if(character_class_escapes,
|
||||
[cp = *m_pos](auto& t) { return t.cp == cp; });
|
||||
[cp = to_lower(*m_pos)](auto& t) { return t.cp == cp; });
|
||||
if (it != std::end(character_class_escapes))
|
||||
{
|
||||
auto negative = is_upper(*m_pos);
|
||||
if (it->ctype)
|
||||
ctypes.push_back({wctype(it->ctype), not it->neg});
|
||||
for (auto& c : it->additional_chars) // TODO: handle negative case
|
||||
ctypes.push_back({wctype(it->ctype), not negative});
|
||||
for (auto& c : it->additional_chars)
|
||||
{
|
||||
if (it->neg)
|
||||
if (negative)
|
||||
excluded.push_back((Codepoint)c);
|
||||
else
|
||||
ranges.push_back({(Codepoint)c, (Codepoint)c});
|
||||
|
@ -497,13 +496,9 @@ private:
|
|||
// For some reason Gcc fails to link if this is constexpr
|
||||
const RegexParser::CharacterClassEscape RegexParser::character_class_escapes[8] = {
|
||||
{ 'd', "digit", "", false },
|
||||
{ 'D', "digit", "", true },
|
||||
{ 'w', "alnum", "_", false },
|
||||
{ 'W', "alnum", "_", true },
|
||||
{ 's', "space", "", false },
|
||||
{ 'S', "space", "", true },
|
||||
{ 'h', nullptr, " \t", false },
|
||||
{ 'H', nullptr, " \t", true },
|
||||
};
|
||||
|
||||
struct RegexCompiler
|
||||
|
|
Loading…
Reference in New Issue
Block a user