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-rw-r--r--JPratt/src/main/java/com/ashardalon/pratt/commands/NonInitialCommand.java66
1 files changed, 66 insertions, 0 deletions
diff --git a/JPratt/src/main/java/com/ashardalon/pratt/commands/NonInitialCommand.java b/JPratt/src/main/java/com/ashardalon/pratt/commands/NonInitialCommand.java
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+++ b/JPratt/src/main/java/com/ashardalon/pratt/commands/NonInitialCommand.java
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+package com.ashardalon.pratt.commands;
+
+import com.ashardalon.pratt.ParserContext;
+import com.ashardalon.pratt.tokens.Token;
+
+import bjc.data.Tree;
+import bjc.utils.parserutils.ParserException;
+
+/**
+ * Represents a non-initial command in parsing.
+ *
+ * @author EVE
+ *
+ * @param <K>
+ * The key type for the tokens.
+ *
+ * @param <V>
+ * The value type for the tokens.
+ *
+ * @param <C>
+ * The state type of the parser.
+ *
+ */
+public abstract class NonInitialCommand<K, V, C> {
+ /**
+ * Construct the left denotation of this command.
+ *
+ * @param operand
+ * The left-hand operand of this command.
+ * @param operator
+ * The operator for this command.
+ *
+ * @param ctx
+ * The state needed for commands.
+ *
+ * @return The result of executing the command.
+ *
+ * @throws ParserException
+ * If something went wrong during parsing.
+ */
+ public abstract CommandResult<K, V> denote(Tree<Token<K, V>> operand, Token<K, V> operator,
+ ParserContext<K, V, C> ctx) throws ParserException;
+
+ /**
+ * Get the left-binding power of this command.
+ *
+ * This represents the general precedence of this command.
+ *
+ * @return The left-binding power of this command.
+ */
+ public abstract int leftBinding();
+
+ /**
+ * Get the next-binding power of this command.
+ *
+ * This represents the highest precedence of command this command can be
+ * the left operand of.
+ *
+ * This is the same as the left-binding power by default.
+ *
+ * @return The next-binding power of this command.
+ */
+ public int nextBinding() {
+ return leftBinding();
+ }
+}