diff options
| author | bjculkin <bjculkin@mix.wvu.edu> | 2017-04-05 15:35:13 -0400 |
|---|---|---|
| committer | bjculkin <bjculkin@mix.wvu.edu> | 2017-04-05 15:35:13 -0400 |
| commit | c82452e59b1547392c3e89d08d9173cc6dc79e23 (patch) | |
| tree | 1927051f7cab7a64eef3f53a78b77780db6cf281 /JPratt/src/main/java/bjc/utils/parserutils/pratt/blocks/SimpleParseBlock.java | |
| parent | b61c66d5e0c18faee68eb91881d5dfe760818856 (diff) | |
Reorganize
Diffstat (limited to 'JPratt/src/main/java/bjc/utils/parserutils/pratt/blocks/SimpleParseBlock.java')
| -rw-r--r-- | JPratt/src/main/java/bjc/utils/parserutils/pratt/blocks/SimpleParseBlock.java | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/JPratt/src/main/java/bjc/utils/parserutils/pratt/blocks/SimpleParseBlock.java b/JPratt/src/main/java/bjc/utils/parserutils/pratt/blocks/SimpleParseBlock.java deleted file mode 100644 index c2e9e54..0000000 --- a/JPratt/src/main/java/bjc/utils/parserutils/pratt/blocks/SimpleParseBlock.java +++ /dev/null @@ -1,101 +0,0 @@ -package bjc.utils.parserutils.pratt.blocks; - -import java.util.function.Predicate; - -import bjc.utils.data.ITree; -import bjc.utils.parserutils.ParserException; -import bjc.utils.parserutils.pratt.ParseBlock; -import bjc.utils.parserutils.pratt.ParserContext; -import bjc.utils.parserutils.pratt.Token; - -/** - * Simple implementation of {@link ParseBlock} - * - * @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 SimpleParseBlock<K, V, C> implements ParseBlock<K, V, C> { - private int pow; - - private K term; - - private Predicate<ITree<Token<K, V>>> validatr; - - /** - * Create a new block. - * - * @param precedence - * The precedence of this block. - * - * @param terminator - * The token type that terminates the block. If this is - * null, don't check for a terminator. - * - * @param validator - * The predicate to apply to blocks. - */ - public SimpleParseBlock(int precedence, K terminator, Predicate<ITree<Token<K, V>>> validator) { - if (precedence < 0) throw new IllegalArgumentException("Precedence must be non-negative"); - - pow = precedence; - term = terminator; - validatr = validator; - } - - @Override - public ITree<Token<K, V>> parse(ParserContext<K, V, C> ctx) throws ParserException { - ITree<Token<K, V>> res = ctx.parse.parseExpression(pow, ctx.tokens, ctx.state, false); - - if (term != null) { - ctx.tokens.expect(term); - } - - if (validatr == null || validatr.test(res)) { - return res; - } - - throw new ParserException("Block failed validation"); - } - - @Override - public int hashCode() { - final int prime = 31; - - int result = 1; - - result = prime * result + pow; - result = prime * result + ((term == null) ? 0 : term.hashCode()); - - return result; - } - - @Override - public boolean equals(Object obj) { - if (this == obj) return true; - if (obj == null) return false; - if (!(obj instanceof SimpleParseBlock)) return false; - - SimpleParseBlock<?, ?, ?> other = (SimpleParseBlock<?, ?, ?>) obj; - - if (pow != other.pow) return false; - - if (term == null) { - if (other.term != null) return false; - } else if (!term.equals(other.term)) return false; - - return true; - } - - @Override - public String toString() { - return String.format("ParseBlock [pow=%s, term='%s']", pow, term); - } -}
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