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Tidy up get_metadata function

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This commit is contained in:
Max Brunsfeld 2014-10-12 13:04:11 -07:00
parent b23caf366f
commit 6415690738
2 changed files with 10 additions and 7 deletions
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7
src/compiler/build_tables/get_metadata.cc
View file

@ -9,6 +9,10 @@ int get_metadata(const rules::rule_ptr &rule, rules::MetadataKey key) {
class GetMetadata : public rules::RuleFn<int> {
rules::MetadataKey metadata_key;
public:
explicit GetMetadata(rules::MetadataKey key) : metadata_key(key) {}
protected:
int apply_to(const rules::Metadata *rule) {
int result = rule->value_for(metadata_key);
return (result != 0) ? result : apply(rule->rule);
@ -18,9 +22,6 @@ int get_metadata(const rules::rule_ptr &rule, rules::MetadataKey key) {
// Remove this. It is currently needed to make the rule generated
// by `LexTableBuilder::after_separators` have the right precedence.
int apply_to(const rules::Seq *rule) { return apply(rule->left); }
public:
explicit GetMetadata(rules::MetadataKey key) : metadata_key(key) {}
};
return GetMetadata(key).apply(rule);

10
src/compiler/build_tables/get_metadata.h
View file

@ -1,13 +1,15 @@
#ifndef COMPILER_BUILD_TABLES_GET_METADATA_H_
#define COMPILER_BUILD_TABLES_GET_METADATA_H_
#include "compiler/rules/rule.h"
#include "compiler/rules/metadata.h"
#include "tree_sitter/compiler.h"
namespace tree_sitter {
namespace build_tables {
int get_metadata(const rules::rule_ptr &rule, rules::MetadataKey key);
}
}
int get_metadata(const rules::rule_ptr &, rules::MetadataKey);
} // namespace build_tables
} // namespace tree_sitter
#endif // COMPILER_BUILD_TABLES_GET_METADATA_H_