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| author | bculkin2442 <bjculkin@mix.wvu.edu> | 2017-03-25 19:13:42 -0400 |
|---|---|---|
| committer | bculkin2442 <bjculkin@mix.wvu.edu> | 2017-03-25 19:13:42 -0400 |
| commit | 42990231fee502552b769b9af4c04ac0dcaeb195 (patch) | |
| tree | 4dbe0ba0bc54fffafacc9ab12349efd76c52041c /BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/commands/GroupingCommand.java | |
| parent | 674d9769821775484fe6913b93c650189fbedfed (diff) | |
Update Pratt parser
Diffstat (limited to 'BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/commands/GroupingCommand.java')
| -rw-r--r-- | BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/commands/GroupingCommand.java | 41 |
1 files changed, 31 insertions, 10 deletions
diff --git a/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/commands/GroupingCommand.java b/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/commands/GroupingCommand.java index 407a39e..37cc6ee 100644 --- a/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/commands/GroupingCommand.java +++ b/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/commands/GroupingCommand.java @@ -3,27 +3,48 @@ package bjc.utils.parserutils.pratt.commands; import bjc.utils.data.ITree; import bjc.utils.data.Tree; import bjc.utils.parserutils.ParserException; +import bjc.utils.parserutils.pratt.ParseBlock; import bjc.utils.parserutils.pratt.ParserContext; import bjc.utils.parserutils.pratt.Token; +/** + * A grouping operator. + * + * @author bjculkin + * + * @param <K> + * The key type of the tokens. + * + * @param <V> + * The value type of the tokens. + * + * @param <C> + * The state type of the parser. + */ public class GroupingCommand<K, V, C> extends AbstractInitialCommand<K, V, C> { - private K term; - private Token<K, V> mark; - private int inner; + private ParseBlock<K, V, C> innerBlock; + + private Token<K, V> mark; + + /** + * Create a new grouping command. + * + * @param inner + * The inner block. + * + * @param marker + * The token to use as the node in the AST. + */ + public GroupingCommand(ParseBlock<K, V, C> inner, Token<K, V> marker) { + innerBlock = inner; - public GroupingCommand(int innerPrec, K terminator, Token<K, V> marker) { - inner = innerPrec; - term = terminator; mark = marker; } - @SuppressWarnings("unchecked") @Override protected ITree<Token<K, V>> intNullDenotation(Token<K, V> operator, ParserContext<K, V, C> ctx) throws ParserException { - ITree<Token<K, V>> opr = ctx.parse.parseExpression(inner, ctx.tokens, ctx.state, false); - - ctx.tokens.expect(term); + ITree<Token<K, V>> opr = innerBlock.parse(ctx); return new Tree<>(mark, opr); } |
