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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64
src/compiler/lr/transitions.cpp
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@ -1,64 +0,0 @@
#include "transitions.h"
#include "rules.h"
using namespace tree_sitter::rules;
namespace tree_sitter {
namespace lr {
class TransitionsVisitor : public rules::Visitor {
public:
transition_map<Rule, Rule> value;
void visit(const Blank *rule) {
value = transition_map<Rule, Rule>({{ blank(), blank() }});
}
void visit(const Character *rule) {
value = transition_map<Rule, Rule>({{ rule->copy(), blank() }});
}
void visit(const Symbol *rule) {
value = transition_map<Rule, Rule>({{ rule->copy(), blank() }});
}
void visit(const Choice *rule) {
value = transitions(rule->left);
value.merge(transitions(rule->right), [&](rule_ptr left, rule_ptr right) -> rule_ptr {
return choice({ left, right });
});
}
void visit(const Seq *rule) {
value = transitions(rule->left).map<Rule>([&](const rule_ptr left_rule) -> rule_ptr {
if (typeid(*left_rule) == typeid(Blank))
return rule->right;
else
return seq({ left_rule, rule->right });
});
}
void visit(const Repeat *rule) {
value = transitions(rule->content).map<Rule>([&](const rule_ptr &value) -> rule_ptr {
return seq({ value, choice({ rule->copy(), blank() }) });
});
}
void visit(const String *rule) {
rule_ptr result = character(rule->value[0]);
for (int i = 1; i < rule->value.length(); i++)
result = seq({ result, character(rule->value[i]) });
value = transitions(result);
}
void visit(const Pattern *rule) {
value = transitions(rule->to_rule_tree());
}
};
transition_map<Rule, Rule> transitions(const rule_ptr &rule) {
TransitionsVisitor visitor;
rule->accept(visitor);
return visitor.value;
}
}
}