diff options
Diffstat (limited to 'BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/blocks/TriggeredParseBlock.java')
| -rw-r--r-- | BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/blocks/TriggeredParseBlock.java | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/blocks/TriggeredParseBlock.java b/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/blocks/TriggeredParseBlock.java deleted file mode 100644 index fbfc61b..0000000 --- a/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/blocks/TriggeredParseBlock.java +++ /dev/null @@ -1,61 +0,0 @@ -package bjc.utils.parserutils.pratt.blocks; - -import java.util.function.UnaryOperator; - -import bjc.utils.data.ITree; -import bjc.utils.parserutils.ParserException; -import bjc.utils.parserutils.pratt.ParseBlock; -import bjc.utils.parserutils.pratt.ParserContext; -import bjc.utils.parserutils.pratt.Token; - -/** - * A parse block that can adjust the state before handling its context. - * - * @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 TriggeredParseBlock<K, V, C> implements ParseBlock<K, V, C> { - private UnaryOperator<C> onEnter; - private UnaryOperator<C> onExit; - - private ParseBlock<K, V, C> source; - - /** - * Create a new triggered parse block. - * - * @param onEnter - * The action to fire before parsing the block. - * - * @param onExit - * The action to fire after parsing the block. - * - * @param source - * The block to use for parsing. - */ - public TriggeredParseBlock(UnaryOperator<C> onEnter, UnaryOperator<C> onExit, ParseBlock<K, V, C> source) { - super(); - this.onEnter = onEnter; - this.onExit = onExit; - this.source = source; - } - - @Override - public ITree<Token<K, V>> parse(ParserContext<K, V, C> ctx) throws ParserException { - C newState = onEnter.apply(ctx.state); - - ParserContext<K, V, C> newCtx = new ParserContext<>(ctx.tokens, ctx.parse, newState); - - ITree<Token<K, V>> res = source.parse(newCtx); - - ctx.state = onExit.apply(newState); - - return res; - } - -} |
