9a198562e0
For now, only reduce/reduce conflicts w/ no tie-breaking precedence are treated as errors. The rest are dropped, because shift/reduce conflicts are currently very common because we don't have a way of specifying associativity along w/ precedence.
71 lines
2 KiB
C++
71 lines
2 KiB
C++
#ifndef TREE_SITTER_COMPILER_H_
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#define TREE_SITTER_COMPILER_H_
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#include <memory>
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#include <set>
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#include <string>
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#include <utility>
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#include <vector>
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namespace tree_sitter {
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namespace rules {
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class Rule;
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typedef std::shared_ptr<Rule> rule_ptr;
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rule_ptr blank();
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rule_ptr choice(const std::vector<rule_ptr> &);
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rule_ptr repeat(const rule_ptr &);
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rule_ptr seq(const std::vector<rule_ptr> &);
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rule_ptr sym(const std::string &);
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rule_ptr pattern(const std::string &);
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rule_ptr str(const std::string &);
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rule_ptr keyword(const std::string &);
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rule_ptr keypattern(const std::string &);
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rule_ptr err(const rule_ptr &);
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rule_ptr prec(int precedence, const rule_ptr &);
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rule_ptr token(const rule_ptr &rule);
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std::ostream &operator<<(std::ostream &stream, const rules::rule_ptr &rule);
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} // namespace rules
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class Grammar {
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const std::vector<std::pair<std::string, rules::rule_ptr>> rules_;
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std::set<rules::rule_ptr> ubiquitous_tokens_;
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public:
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explicit Grammar(const std::vector<std::pair<std::string, rules::rule_ptr>> &);
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bool operator==(const Grammar &) const;
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std::string start_rule_name() const;
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const rules::rule_ptr rule(const std::string &) const;
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const std::vector<std::pair<std::string, rules::rule_ptr>> &rules() const;
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const std::set<rules::rule_ptr> &ubiquitous_tokens() const;
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Grammar &ubiquitous_tokens(const std::set<rules::rule_ptr> &);
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};
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enum GrammarErrorType {
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GrammarErrorTypeRegex,
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GrammarErrorTypeUndefinedSymbol,
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GrammarErrorTypeInvalidUbiquitousToken,
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GrammarErrorTypeLexConflict,
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GrammarErrorTypeParseConflict,
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};
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class GrammarError {
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public:
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GrammarError(GrammarErrorType type, std::string message);
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bool operator==(const GrammarError &other) const;
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GrammarErrorType type;
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std::string message;
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};
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std::pair<std::string, const GrammarError *> compile(const Grammar &, std::string);
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std::ostream &operator<<(std::ostream &stream, const Grammar &grammar);
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std::ostream &operator<<(std::ostream &stream, const GrammarError *error);
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} // namespace tree_sitter
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#endif // TREE_SITTER_COMPILER_H_
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