diff options
Diffstat (limited to 'JPratt/src/main/java/bjc/pratt/blocks/TriggeredParseBlock.java')
| -rw-r--r-- | JPratt/src/main/java/bjc/pratt/blocks/TriggeredParseBlock.java | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/JPratt/src/main/java/bjc/pratt/blocks/TriggeredParseBlock.java b/JPratt/src/main/java/bjc/pratt/blocks/TriggeredParseBlock.java deleted file mode 100644 index d404eea..0000000 --- a/JPratt/src/main/java/bjc/pratt/blocks/TriggeredParseBlock.java +++ /dev/null @@ -1,62 +0,0 @@ -package bjc.pratt.blocks; - -import java.util.function.UnaryOperator; - -import bjc.pratt.ParserContext; -import bjc.pratt.commands.CommandResult; -import bjc.pratt.commands.CommandResult.Status; -import bjc.utils.parserutils.ParserException; - -/** - * 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 final UnaryOperator<C> onEntr; - private final UnaryOperator<C> onExt; - - private final ParseBlock<K, V, C> sourc; - - /** - * 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(final UnaryOperator<C> onEnter, final UnaryOperator<C> onExit, - final ParseBlock<K, V, C> source) { - onEntr = onEnter; - onExt = onExit; - sourc = source; - } - - @Override - public CommandResult<K, V> parse(final ParserContext<K, V, C> ctx) throws ParserException { - final C newState = onEntr.apply(ctx.state); - - final ParserContext<K, V, C> newCtx = new ParserContext<>(ctx.tokens, ctx.parse, newState); - - final CommandResult<K,V> res = sourc.parse(newCtx); - - if (res.status != Status.SUCCESS) return res; - - ctx.state = onExt.apply(newState); - - return res; - } - -} |
