57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
#include "compiler/rules/seq.h"
|
|
#include <string>
|
|
#include "compiler/rules/visitor.h"
|
|
#include "compiler/rules/blank.h"
|
|
#include "compiler/rules/metadata.h"
|
|
|
|
namespace tree_sitter {
|
|
namespace rules {
|
|
|
|
using std::make_shared;
|
|
using std::string;
|
|
using std::vector;
|
|
|
|
Seq::Seq(rule_ptr left, rule_ptr right) : left(left), right(right) {}
|
|
|
|
rule_ptr Seq::build(const std::vector<rule_ptr> &rules) {
|
|
rule_ptr result = make_shared<Blank>();
|
|
for (auto &rule : rules) {
|
|
auto blank = rule->as<Blank>();
|
|
if (blank)
|
|
continue;
|
|
|
|
auto metadata = rule->as<Metadata>();
|
|
if (metadata && metadata->rule->as<Blank>())
|
|
continue;
|
|
|
|
if (result->as<Blank>())
|
|
result = rule;
|
|
else
|
|
result = make_shared<Seq>(result, rule);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
bool Seq::operator==(const Rule &rule) const {
|
|
const Seq *other = rule.as<Seq>();
|
|
return other && (*other->left == *left) && (*other->right == *right);
|
|
}
|
|
|
|
size_t Seq::hash_code() const {
|
|
return left->hash_code() ^ right->hash_code();
|
|
}
|
|
|
|
rule_ptr Seq::copy() const {
|
|
return std::make_shared<Seq>(*this);
|
|
}
|
|
|
|
string Seq::to_string() const {
|
|
return string("(seq ") + left->to_string() + " " + right->to_string() + ")";
|
|
}
|
|
|
|
void Seq::accept(Visitor *visitor) const {
|
|
visitor->visit(this);
|
|
}
|
|
|
|
} // namespace rules
|
|
} // namespace tree_sitter
|