traxys/tree-sitter
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Rename source files: .cpp -> .cc

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This commit is contained in:
Max Brunsfeld 2014-03-09 22:13:08 -07:00
parent 31a58bc7e4
commit a411e43484
49 changed files with 3 additions and 3 deletions
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60
src/compiler/build_tables/first_set.cpp
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@ -1,60 +0,0 @@
#include "compiler/build_tables/first_set.h"
#include "tree_sitter/compiler.h"
#include "compiler/prepared_grammar.h"
#include "compiler/build_tables/rule_can_be_blank.h"
#include "compiler/rules/visitor.h"
#include "compiler/rules/seq.h"
#include "compiler/rules/choice.h"
namespace tree_sitter {
using std::set;
using namespace rules;
namespace build_tables {
set<Symbol> set_union(const set<Symbol> &left, const set<Symbol> &right) {
set<Symbol> result = left;
result.insert(right.begin(), right.end());
return result;
}
class FirstSet : public RuleFn<set<Symbol>> {
const PreparedGrammar grammar;
public:
FirstSet(const PreparedGrammar &grammar) : grammar(grammar) {}
void visit(const Symbol *rule) {
if (grammar.has_definition(*rule)) {
value = apply(grammar.rule(*rule));
} else {
value = set<Symbol>({ *rule });
}
}
void visit(const Choice *rule) {
value = set_union(apply(rule->left), apply(rule->right));
}
void visit(const Seq *rule) {
auto result = apply(rule->left);
if (rule_can_be_blank(rule->left, grammar)) {
result = set_union(result, apply(rule->right));
}
value = result;
}
};
set<Symbol> first_set(const rule_ptr &rule, const PreparedGrammar &grammar) {
return FirstSet(grammar).apply(rule);
}
set<Symbol> first_set(const ParseItemSet &item_set, const PreparedGrammar &grammar) {
set<Symbol> result;
for (auto &item : item_set) {
result = set_union(result, first_set(item.rule, grammar));
if (rule_can_be_blank(item.rule, grammar))
result.insert(item.lookahead_sym);
}
return result;
}
}
}