From 0f6565687e03968abd2e508fa8183f50f04f1cc7 Mon Sep 17 00:00:00 2001
From: bjculkin <bjculkin@mix.wvu.edu>
Date: Fri, 24 Mar 2017 16:21:07 -0400
Subject: Update Pratt Parser

---
 .../bjc/utils/parserutils/pratt/LeftCommands.java  | 320 ---------------------
 1 file changed, 320 deletions(-)
 delete mode 100644 BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/LeftCommands.java

(limited to 'BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/LeftCommands.java')

diff --git a/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/LeftCommands.java b/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/LeftCommands.java
deleted file mode 100644
index 82ec843..0000000
--- a/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/LeftCommands.java
+++ /dev/null
@@ -1,320 +0,0 @@
-package bjc.utils.parserutils.pratt;
-
-import bjc.utils.data.ITree;
-import bjc.utils.data.Tree;
-import bjc.utils.parserutils.ParserException;
-
-import java.util.Set;
-
-/**
- * Contains factory methods for producing common implementations of
- * {@link LeftCommand}
- * 
- * @author EVE
- *
- */
-public class LeftCommands {
-	/*
-	 * A command with constant binding power.
-	 */
-	private static abstract class BinaryPostCommand<K, V, C> extends LeftCommand<K, V, C> {
-		private final int leftPower;
-
-		public BinaryPostCommand(int power) {
-			leftPower = power;
-		}
-
-		@Override
-		public int leftBinding() {
-			return leftPower;
-		}
-	}
-
-	private static abstract class BinaryCommand<K, V, C> extends BinaryPostCommand<K, V, C> {
-		public BinaryCommand(int leftPower) {
-			super(leftPower);
-		}
-
-		protected abstract int rightBinding();
-
-		@Override
-		public ITree<Token<K, V>> leftDenote(ITree<Token<K, V>> operand, Token<K, V> operator,
-				ParserContext<K, V, C> ctx) throws ParserException {
-			ITree<Token<K, V>> opr = ctx.parse.parseExpression(rightBinding(), ctx.tokens, ctx.state, false);
-
-			return new Tree<>(operator, operand, opr);
-		}
-	}
-
-	private static class LeftBinaryCommand<K, V, C> extends BinaryCommand<K, V, C> {
-		public LeftBinaryCommand(int leftPower) {
-			super(leftPower);
-		}
-
-		@Override
-		protected int rightBinding() {
-			return 1 + leftBinding();
-		}
-	}
-
-	private static class RightBinaryCommand<K, V, C> extends BinaryCommand<K, V, C> {
-		public RightBinaryCommand(int leftPower) {
-			super(leftPower);
-		}
-
-		@Override
-		protected int rightBinding() {
-			return leftBinding();
-		}
-	}
-
-	private static class NonBinaryCommand<K, V, C> extends BinaryCommand<K, V, C> {
-		public NonBinaryCommand(int leftPower) {
-			super(leftPower);
-		}
-
-		@Override
-		protected int rightBinding() {
-			return 1 + leftBinding();
-		}
-
-		@Override
-		public int nextBinding() {
-			return leftBinding() - 1;
-		}
-	}
-
-	private static class PostCircumfixCommand<K, V, C> extends BinaryPostCommand<K, V, C> {
-		private int		insidePrec;
-		private K		term;
-		private Token<K, V>	mark;
-
-		public PostCircumfixCommand(int leftPower, int insidePower, K terminator, Token<K, V> marker) {
-			super(leftPower);
-
-			insidePrec = insidePower;
-			term = terminator;
-			mark = marker;
-		}
-
-		@SuppressWarnings("unchecked")
-		@Override
-		public ITree<Token<K, V>> leftDenote(ITree<Token<K, V>> operand, Token<K, V> operator,
-				ParserContext<K, V, C> ctx) throws ParserException {
-			ITree<Token<K, V>> inside = ctx.parse.parseExpression(insidePrec, ctx.tokens, ctx.state, false);
-
-			ctx.tokens.expect(term);
-
-			return new Tree<>(mark, operand, inside);
-		}
-	}
-
-	private static class PostfixCommand<K, V, C> extends BinaryPostCommand<K, V, C> {
-		public PostfixCommand(int leftPower) {
-			super(leftPower);
-		}
-
-		@Override
-		public ITree<Token<K, V>> leftDenote(ITree<Token<K, V>> operand, Token<K, V> operator,
-				ParserContext<K, V, C> ctx) throws ParserException {
-			return new Tree<>(operator, operand);
-		}
-	}
-
-	private static class TernaryCommand<K, V, C> extends BinaryPostCommand<K, V, C> {
-		private K term;
-
-		private int innerExp;
-
-		private Token<K, V> mark;
-
-		private boolean nonassoc;
-
-		public TernaryCommand(int leftPower, K terminator, Token<K, V> marker, boolean isNonassoc) {
-			super(leftPower);
-
-			term = terminator;
-			mark = marker;
-			nonassoc = isNonassoc;
-		}
-
-		@SuppressWarnings("unchecked")
-		@Override
-		public ITree<Token<K, V>> leftDenote(ITree<Token<K, V>> operand, Token<K, V> operator,
-				ParserContext<K, V, C> ctx) throws ParserException {
-			ITree<Token<K, V>> inner = ctx.parse.parseExpression(innerExp, ctx.tokens, ctx.state, false);
-
-			ctx.tokens.expect(term);
-
-			ITree<Token<K, V>> outer = ctx.parse.parseExpression(1 + leftBinding(), ctx.tokens, ctx.state, false);
-
-			return new Tree<>(mark, inner, operand, outer);
-		}
-
-		@Override
-		public int nextBinding() {
-			if (nonassoc) {
-				return leftBinding() - 1;
-			} else {
-				return leftBinding();
-			}
-		}
-	}
-
-	private static class ChainCommand<K, V, C> extends BinaryPostCommand<K, V, C> {
-		private Set<K> chainWith;
-
-		private Token<K, V> chain;
-
-		public ChainCommand(int leftPower, Set<K> chainSet, Token<K, V> chainMarker) {
-			super(leftPower);
-
-			chainWith = chainSet;
-			chain = chainMarker;
-		}
-
-		@Override
-		public ITree<Token<K, V>> leftDenote(ITree<Token<K, V>> operand, Token<K, V> operator,
-				ParserContext<K, V, C> ctx) throws ParserException {
-			ITree<Token<K, V>> tree = ctx.parse.parseExpression(1 + leftBinding(), ctx.tokens, ctx.state, false);
-
-			ITree<Token<K, V>> res = new Tree<>(operator, operand, tree);
-
-			if (chainWith.contains(ctx.tokens.current().getKey())) {
-				Token<K, V> tok = ctx.tokens.current();
-				ctx.tokens.next();
-
-				ITree<Token<K, V>> other = leftDenote(tree, tok,
-						new ParserContext<>(ctx.tokens, ctx.parse, ctx.state));
-
-				return new Tree<>(chain, res, other);
-			} else {
-				return res;
-			}
-		}
-
-		@Override
-		public int nextBinding() {
-			return leftBinding() - 1;
-		}
-	}
-
-	/**
-	 * Create a left-associative infix operator.
-	 * 
-	 * @param precedence
-	 *                The precedence of the operator.
-	 * 
-	 * @return A command implementing that operator.
-	 */
-	public static <K, V, C> LeftCommand<K, V, C> infixLeft(int precedence) {
-		return new LeftBinaryCommand<>(precedence);
-	}
-
-	/**
-	 * Create a right-associative infix operator.
-	 * 
-	 * @param precedence
-	 *                The precedence of the operator.
-	 * 
-	 * @return A command implementing that operator.
-	 */
-	public static <K, V, C> LeftCommand<K, V, C> infixRight(int precedence) {
-		return new RightBinaryCommand<>(precedence);
-	}
-
-	/**
-	 * Create a non-associative infix operator.
-	 * 
-	 * @param precedence
-	 *                The precedence of the operator.
-	 * 
-	 * @return A command implementing that operator.
-	 */
-	public static <K, V, C> LeftCommand<K, V, C> infixNon(int precedence) {
-		return new NonBinaryCommand<>(precedence);
-	}
-
-	/**
-	 * Create a chained operator.
-	 * 
-	 * @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> LeftCommand<K, V, C> chain(int precedence, Set<K> chainSet, Token<K, V> marker) {
-		return new ChainCommand<>(precedence, chainSet, marker);
-	}
-
-	/**
-	 * Create a postfix operator.
-	 * 
-	 * @param precedence
-	 *                The precedence of the operator.
-	 * 
-	 * @return A command implementing that operator.
-	 */
-	public static <K, V, C> LeftCommand<K, V, C> postfix(int precedence) {
-		return new PostfixCommand<>(precedence);
-	}
-
-	/**
-	 * Create a post-circumfix operator.
-	 * 
-	 * This is an operator in form similar to array indexing.
-	 * 
-	 * @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> LeftCommand<K, V, C> postCircumfix(int precedence, int insidePrecedence, K closer,
-			Token<K, V> marker) {
-		return new PostCircumfixCommand<>(precedence, insidePrecedence, closer, marker);
-	}
-
-	/**
-	 * Create a ternary operator.
-	 * 
-	 * This is like C's ?: operator.
-	 * 
-	 * @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> LeftCommand<K, V, C> ternary(int precedence, int insidePrecedence, K closer,
-			Token<K, V> marker, boolean nonassoc) {
-		return new TernaryCommand<>(insidePrecedence, closer, marker, nonassoc);
-	}
-}
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