traxys/tree-sitter
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Compute item set transitions

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This commit is contained in:
Max Brunsfeld 2013-11-20 19:00:20 -08:00
parent 100ab56779
commit 99c216f78a
23 changed files with 250 additions and 55 deletions
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20
src/rules/pattern.cpp
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@ -56,7 +56,7 @@ namespace tree_sitter {
break;
case '\\':
next();
result = character(peek());
result = escaped_char(peek());
next();
break;
default:
@ -67,6 +67,21 @@ namespace tree_sitter {
return result;
}
rule_ptr escaped_char(char value) {
switch (value) {
case '(':
case ')':
return character(value);
case 'w':
return char_class(CharClassTypeWord);
case 'd':
return char_class(CharClassTypeDigit);
default:
error("unrecognized escape sequence");
return rule_ptr();
}
}
void next() {
position++;
}
@ -103,7 +118,8 @@ namespace tree_sitter {
}
bool Pattern::operator ==(tree_sitter::rules::Rule const &other) const {
return false;
auto pattern = dynamic_cast<const Pattern *>(&other);
return pattern && (pattern->value == value);
}
std::string Pattern::to_string() const {