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Diffstat (limited to 'JPratt/src/main/java/com/ashardalon/pratt/commands/AbstractInitialCommand.java')
| -rw-r--r-- | JPratt/src/main/java/com/ashardalon/pratt/commands/AbstractInitialCommand.java | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/JPratt/src/main/java/com/ashardalon/pratt/commands/AbstractInitialCommand.java b/JPratt/src/main/java/com/ashardalon/pratt/commands/AbstractInitialCommand.java new file mode 100644 index 0000000..c38aa9b --- /dev/null +++ b/JPratt/src/main/java/com/ashardalon/pratt/commands/AbstractInitialCommand.java @@ -0,0 +1,45 @@ +package com.ashardalon.pratt.commands; + +import com.ashardalon.pratt.ParserContext; +import com.ashardalon.pratt.tokens.Token; + +import bjc.utils.parserutils.ParserException; + +/** + * Abstract base for initial commands. + * + * @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 abstract class AbstractInitialCommand<K, V, C> implements InitialCommand<K, V, C> { + @Override + public CommandResult<K, V> denote(final Token<K, V> operator, + final ParserContext<K, V, C> ctx) throws ParserException { + return intNullDenotation(operator, ctx); + } + + /** + * Internal null denotation method. + * + * @param operator + * The operator that was parsed. + * @param ctx + * The parser context at this point. + * + * @return The tree that this method parsed. + * + * @throws ParserException + * If something went wrong while parsing. + */ + protected abstract CommandResult<K, V> intNullDenotation(Token<K, V> operator, + ParserContext<K, V, C> ctx) throws ParserException; + +}
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