diff options
Diffstat (limited to 'JPratt/src/main/java/com/ashardalon/pratt/commands/impls/DefaultNonInitialCommand.java')
| -rw-r--r-- | JPratt/src/main/java/com/ashardalon/pratt/commands/impls/DefaultNonInitialCommand.java | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/JPratt/src/main/java/com/ashardalon/pratt/commands/impls/DefaultNonInitialCommand.java b/JPratt/src/main/java/com/ashardalon/pratt/commands/impls/DefaultNonInitialCommand.java new file mode 100644 index 0000000..8666713 --- /dev/null +++ b/JPratt/src/main/java/com/ashardalon/pratt/commands/impls/DefaultNonInitialCommand.java @@ -0,0 +1,35 @@ +package com.ashardalon.pratt.commands.impls; + +import com.ashardalon.pratt.ParserContext; +import com.ashardalon.pratt.commands.CommandResult; +import com.ashardalon.pratt.commands.NonInitialCommand; +import com.ashardalon.pratt.tokens.Token; + +import bjc.data.Tree; + +/** + * Default implementation of a non-initial command. + * + * @author EVE + * + * @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 DefaultNonInitialCommand<K, V, C> extends NonInitialCommand<K, V, C> { + @Override + public CommandResult<K, V> denote(final Tree<Token<K, V>> operand, final Token<K, V> operator, + final ParserContext<K, V, C> ctx) { + throw new UnsupportedOperationException("Default command has no left denotation"); + } + + @Override + public int leftBinding() { + return -1; + } +} |
