32387400c6
* Unify precedence/associativity-based resolution with the search for a whitelisted conflict * Improve conflict error messages
91 lines
2.1 KiB
C++
91 lines
2.1 KiB
C++
#ifndef COMPILER_BUILD_TABLES_PARSE_ITEM_H_
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#define COMPILER_BUILD_TABLES_PARSE_ITEM_H_
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#include <map>
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#include <utility>
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#include "compiler/build_tables/lookahead_set.h"
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#include "compiler/rules/symbol.h"
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#include "compiler/rules/metadata.h"
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#include "compiler/syntax_grammar.h"
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#include "compiler/precedence_range.h"
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namespace tree_sitter {
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namespace build_tables {
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class ParseItem {
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public:
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ParseItem();
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ParseItem(const rules::Symbol &, const Production &, unsigned int);
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struct CompletionStatus {
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bool is_done;
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int precedence;
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rules::Associativity associativity;
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};
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bool operator==(const ParseItem &other) const;
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bool operator<(const ParseItem &other) const;
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rules::Symbol lhs() const;
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rules::Symbol next_symbol() const;
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int precedence() const;
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rules::Associativity associativity() const;
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bool is_done() const;
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int variable_index;
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const Production *production;
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unsigned int step_index;
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};
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class ParseItemSet {
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public:
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ParseItemSet();
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explicit ParseItemSet(const std::map<ParseItem, LookaheadSet> &);
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struct Completion;
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struct Action;
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struct ActionMap {
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std::map<rules::Symbol::Index, Action> terminal_actions;
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std::map<rules::Symbol::Index, ParseItemSet> nonterminal_continuations;
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};
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ActionMap actions() const;
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bool operator==(const ParseItemSet &) const;
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void add(const ParseItemSet &);
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size_t unfinished_item_signature() const;
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std::map<ParseItem, LookaheadSet> entries;
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};
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struct ParseItemSet::Completion {
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const ParseItem *item;
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int precedence;
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rules::Associativity associativity;
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bool operator<(const ParseItemSet::Completion &other) {
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return precedence < other.precedence;
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}
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};
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struct ParseItemSet::Action {
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ParseItemSet continuation;
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std::vector<const ParseItem *> completions;
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int completion_precedence;
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};
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} // namespace build_tables
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} // namespace tree_sitter
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namespace std {
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using tree_sitter::build_tables::ParseItemSet;
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template <>
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struct hash<tree_sitter::build_tables::ParseItemSet> {
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size_t operator()(const ParseItemSet &item_set) const;
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};
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} // namespace std
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#endif // COMPILER_BUILD_TABLES_PARSE_ITEM_H_
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