1 files changed, 167 insertions, 0 deletions
diff --git a/JPratt/src/main/java/com/ashardalon/pratt/commands/impls/NonInitialCommands.java b/JPratt/src/main/java/com/ashardalon/pratt/commands/impls/NonInitialCommands.java
new file mode 100644
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--- /dev/null
+++ b/JPratt/src/main/java/com/ashardalon/pratt/commands/impls/NonInitialCommands.java
@@ -0,0 +1,167 @@
+package com.ashardalon.pratt.commands.impls;
+
+import java.util.Set;
+
+import com.ashardalon.pratt.blocks.ParseBlock;
+import com.ashardalon.pratt.blocks.SimpleParseBlock;
+import com.ashardalon.pratt.commands.NonInitialCommand;
+import com.ashardalon.pratt.tokens.Token;
+
+/**
+ * Contains factory methods for producing common implementations of
+ * {@link NonInitialCommand}
+ *
+ * @author EVE
+ *
+ */
+public class NonInitialCommands {
+	/**
+	 * Create a left-associative infix operator.
+	 *
+	 * @param <K> The key type for the tokens. 
+	 * @param <V> The value type for the tokens.
+	 * @param <C> The context type for the tokens.
+	 *
+	 * @param precedence
+	 *        The precedence of the operator.
+	 *
+	 * @return A command implementing that operator.
+	 */
+	public static <K, V, C> NonInitialCommand<K, V, C> infixLeft(final int precedence) {
+		return new LeftBinaryCommand<>(precedence);
+	}
+
+	/**
+	 * Create a right-associative infix operator.
+	 *
+	 * @param <K> The key type for the tokens. 
+	 * @param <V> The value type for the tokens.
+	 * @param <C> The context type for the tokens.
+	 *
+	 * @param precedence
+	 *        The precedence of the operator.
+	 *
+	 * @return A command implementing that operator.
+	 */
+	public static <K, V, C> NonInitialCommand<K, V, C> infixRight(final int precedence) {
+		return new RightBinaryCommand<>(precedence);
+	}
+
+	/**
+	 * Create a non-associative infix operator.
+	 *
+	 * @param <K> The key type for the tokens. 
+	 * @param <V> The value type for the tokens.
+	 * @param <C> The context type for the tokens.
+	 *
+	 * @param precedence
+	 *        The precedence of the operator.
+	 *
+	 * @return A command implementing that operator.
+	 */
+	public static <K, V, C> NonInitialCommand<K, V, C> infixNon(final int precedence) {
+		return new NonBinaryCommand<>(precedence);
+	}
+
+	/**
+	 * Create a chained operator.
+	 *
+	 * @param <K> The key type for the tokens. 
+	 * @param <V> The value type for the tokens.
+	 * @param <C> The context type for the tokens.
+	 *
+	 * @param precedence
+	 *        The precedence of the operator.
+	 *
+	 * @param chainSet
+	 *        The operators it forms a chain with.
+	 *
+	 * @param marker
+	 *        The token to use as the AST node for the chained operators.
+	 *
+	 * @return A command implementing that operator.
+	 */
+	public static <K, V, C> NonInitialCommand<K, V, C> chain(final int precedence, final Set<K> chainSet,
+			final Token<K, V> marker) {
+		return new ChainCommand<>(precedence, chainSet, marker);
+	}
+
+	/**
+	 * Create a postfix operator.
+	 *
+	 * @param <K> The key type for the tokens. 
+	 * @param <V> The value type for the tokens.
+	 * @param <C> The context type for the tokens.
+	 *
+	 * @param precedence
+	 *        The precedence of the operator.
+	 *
+	 * @return A command implementing that operator.
+	 */
+	public static <K, V, C> NonInitialCommand<K, V, C> postfix(final int precedence) {
+		return new PostfixCommand<>(precedence);
+	}
+
+	/**
+	 * Create a post-circumfix operator.
+	 *
+	 * This is an operator in form similar to array indexing.
+	 *
+	 * @param <K> The key type for the tokens. 
+	 * @param <V> The value type for the tokens.
+	 * @param <C> The context type for the tokens.
+	 *
+	 * @param precedence
+	 *        The precedence of this operator
+	 *
+	 * @param insidePrecedence
+	 *        The precedence of the expression inside the operator
+	 *
+	 * @param closer
+	 *        The token that closes the circumfix.
+	 *
+	 * @param marker
+	 *        The token to use as the AST node for the operator.
+	 *
+	 * @return A command implementing that operator.
+	 */
+	public static <K, V, C> NonInitialCommand<K, V, C> postCircumfix(final int precedence,
+			final int insidePrecedence, final K closer, final Token<K, V> marker) {
+		final ParseBlock<K, V, C> innerBlock = new SimpleParseBlock<>(insidePrecedence, null, closer);
+
+		return new PostCircumfixCommand<>(precedence, innerBlock, marker);
+	}
+
+	/**
+	 * Create a ternary operator.
+	 *
+	 * This is like C's ?: operator.
+	 *
+	 * @param <K> The key type for the tokens. 
+	 * @param <V> The value type for the tokens.
+	 * @param <C> The context type for the tokens.
+	 *
+	 * @param precedence
+	 *        The precedence of the operator.
+	 *
+	 * @param insidePrecedence
+	 *        The precedence of the inner section of the operator.
+	 *
+	 * @param closer
+	 *        The token that marks the end of the inner section.
+	 *
+	 * @param marker
+	 *        The token to use as the AST node for the operator.
+	 *
+	 * @param nonassoc
+	 *        True if the command is non-associative, false otherwise.
+	 *
+	 * @return A command implementing this operator.
+	 */
+	public static <K, V, C> NonInitialCommand<K, V, C> ternary(final int precedence, final int insidePrecedence,
+			final K closer, final Token<K, V> marker, final boolean nonassoc) {
+		final ParseBlock<K, V, C> innerBlock = new SimpleParseBlock<>(insidePrecedence, null, closer);
+
+		return new TernaryCommand<>(precedence, innerBlock, marker, nonassoc);
+	}
+}