32 lines
No EOL
1.1 KiB
C++
32 lines
No EOL
1.1 KiB
C++
#include "choice.h"
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#include "transition_map.h"
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namespace tree_sitter {
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namespace rules {
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Choice::Choice(rule_ptr left, rule_ptr right) : left(left), right(right) {};
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rule_ptr choice(const std::initializer_list<rule_ptr> &rules) {
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rule_ptr result;
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for (auto rule : rules)
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result = result.get() ? std::make_shared<Choice>(result, rule) : rule;
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return result;
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}
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TransitionMap<Rule> Choice::transitions() const {
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auto result = left->transitions();
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result.merge(right->transitions(), [&](rule_ptr left, rule_ptr right) -> rule_ptr {
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return choice({ left, right });
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});
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return result;
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}
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bool Choice::operator==(const Rule &rule) const {
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const Choice *other = dynamic_cast<const Choice *>(&rule);
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return other && (*other->left == *left) && (*other->right == *right);
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}
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std::string Choice::to_string() const {
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return std::string("(choice ") + left->to_string() + " " + right->to_string() + ")";
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}
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}
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} |