diff options
Diffstat (limited to 'JPratt/src/main/java/bjc/utils/parserutils/pratt/commands/ChainCommand.java')
| -rw-r--r-- | JPratt/src/main/java/bjc/utils/parserutils/pratt/commands/ChainCommand.java | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/JPratt/src/main/java/bjc/utils/parserutils/pratt/commands/ChainCommand.java b/JPratt/src/main/java/bjc/utils/parserutils/pratt/commands/ChainCommand.java deleted file mode 100644 index 1324586..0000000 --- a/JPratt/src/main/java/bjc/utils/parserutils/pratt/commands/ChainCommand.java +++ /dev/null @@ -1,73 +0,0 @@ -package bjc.utils.parserutils.pratt.commands; - -import bjc.utils.data.ITree; -import bjc.utils.data.Tree; -import bjc.utils.parserutils.ParserException; -import bjc.utils.parserutils.pratt.ParserContext; -import bjc.utils.parserutils.pratt.Token; - -import java.util.Set; - -/** - * Create a new chained operator. - * - * @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 class ChainCommand<K, V, C> extends BinaryPostCommand<K, V, C> { - private Set<K> chainWith; - - private Token<K, V> chain; - - /** - * Create a new chained operator. - * - * @param precedence - * The precedence of this operator. - * - * @param chainSet - * The operators to chain with. - * - * @param chainMarker - * The token to use as the node in the AST. - */ - public ChainCommand(int precedence, Set<K> chainSet, Token<K, V> chainMarker) { - super(precedence); - - chainWith = chainSet; - chain = chainMarker; - } - - @Override - public ITree<Token<K, V>> denote(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 = denote(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; - } -}
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