traxys/tree-sitter
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Reorganize compiler directory

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This commit is contained in:
Max Brunsfeld 2014-01-11 15:14:17 -08:00
parent 023a0c4f70
commit 92cec5758f
51 changed files with 630 additions and 624 deletions
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66
src/compiler/lr/item.cpp
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@ -1,66 +0,0 @@
#include "item.h"
#include "grammar.h"
#include "transitions.h"
using std::string;
using std::vector;
using std::dynamic_pointer_cast;
using std::make_shared;
using std::ostream;
namespace tree_sitter {
namespace lr {
Item::Item(const string &rule_name, const rules::rule_ptr rule, int consumed_sym_count) :
rule_name(rule_name),
rule(rule),
consumed_sym_count(consumed_sym_count) {};
Item Item::at_beginning_of_rule(const string &rule_name, const Grammar &grammar) {
return Item(rule_name, grammar.rule(rule_name), 0);
}
Item Item::at_beginning_of_token(const string &rule_name, const Grammar &grammar) {
return Item(rule_name, grammar.rule(rule_name), -1);
}
transition_map<rules::Rule, Item> Item::transitions() const {
return lr::transitions(rule).map<Item>([&](rules::rule_ptr to_rule) -> item_ptr {
int next_sym_count = (consumed_sym_count == -1) ? -1 : (consumed_sym_count + 1);
return make_shared<Item>(rule_name, to_rule, next_sym_count);
});
};
vector<rules::Symbol> Item::next_symbols() const {
vector<rules::Symbol> result;
for (auto pair : lr::transitions(rule)) {
auto sym = dynamic_pointer_cast<const rules::Symbol>(pair.first);
if (sym) result.push_back(*sym);
}
return result;
}
bool Item::operator==(const Item &other) const {
bool rule_names_eq = other.rule_name == rule_name;
bool rules_eq = (*other.rule == *rule);
bool consumed_sym_counts_eq = (other.consumed_sym_count == consumed_sym_count);
return rule_names_eq && rules_eq && consumed_sym_counts_eq;
}
bool Item::is_done() const {
for (auto pair : transitions())
if (*pair.first == rules::Blank())
return true;
return false;
}
ostream& operator<<(ostream &stream, const Item &item) {
return stream <<
string("#<item '") <<
item.rule_name <<
string("' ") <<
*item.rule <<
string(">");
}
}
}