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-rw-r--r--JPratt/src/main/java/com/ashardalon/pratt/commands/AbstractInitialCommand.java45
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
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index 0000000..c38aa9b
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+++ 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;
+
+} \ No newline at end of file