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-rw-r--r--BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/commands/TernaryCommand.java54
1 files changed, 42 insertions, 12 deletions
diff --git a/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/commands/TernaryCommand.java b/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/commands/TernaryCommand.java
index c3204b9..8f04368 100644
--- a/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/commands/TernaryCommand.java
+++ b/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/commands/TernaryCommand.java
@@ -3,33 +3,63 @@ 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.ParseBlock;
import bjc.utils.parserutils.pratt.ParserContext;
import bjc.utils.parserutils.pratt.Token;
+/**
+ * A ternary command, like C's ?:
+ *
+ * @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 TernaryCommand<K, V, C> extends BinaryPostCommand<K, V, C> {
- private K term;
-
- private int innerExp;
+ private ParseBlock<K, V, C> innerBlck;
private Token<K, V> mark;
private boolean nonassoc;
- public TernaryCommand(int leftPower, K terminator, Token<K, V> marker, boolean isNonassoc) {
- super(leftPower);
+ /**
+ * Create a new ternary command.
+ *
+ * @param precedence
+ * The precedence of this operator.
+ *
+ * @param innerBlock
+ * The representation of the inner block of the
+ * expression.
+ *
+ * @param marker
+ * The token to use as the root of the AST node.
+ *
+ * @param isNonassoc
+ * Whether or not the conditional is associative.
+ */
+ public TernaryCommand(int precedence, ParseBlock<K, V, C> innerBlock, Token<K, V> marker, boolean isNonassoc) {
+ super(precedence);
+
+ if (innerBlock == null)
+ throw new NullPointerException("Inner block must not be null");
+ else if (marker == null) throw new NullPointerException("Marker must not be null");
- term = terminator;
+ innerBlck = innerBlock;
mark = marker;
nonassoc = isNonassoc;
}
- @SuppressWarnings("unchecked")
@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>> inner = ctx.parse.parseExpression(innerExp, ctx.tokens, ctx.state, false);
-
- ctx.tokens.expect(term);
+ 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>> inner = innerBlck.parse(ctx);
ITree<Token<K, V>> outer = ctx.parse.parseExpression(1 + leftBinding(), ctx.tokens, ctx.state, false);