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authorBenjamin Culkin <scorpress@gmail.com>2024-06-03 17:33:53 -0400
committerBenjamin Culkin <scorpress@gmail.com>2024-06-03 17:33:53 -0400
commit15a2b29e48f134bc93cfd0a3d8512001e9242f3d (patch)
treeb3f5c4c5f0e474479cd47ad0ac0f35770fc44881 /JPratt/src/main/java/com/ashardalon/pratt/commands/impls/GroupingCommand.java
parent39ba97edf49270715ec61bedb7d4a62ada819ba0 (diff)
Rename package to new domainHEADtrunk
Rename the package to the new domain
Diffstat (limited to 'JPratt/src/main/java/com/ashardalon/pratt/commands/impls/GroupingCommand.java')
-rw-r--r--JPratt/src/main/java/com/ashardalon/pratt/commands/impls/GroupingCommand.java55
1 files changed, 55 insertions, 0 deletions
diff --git a/JPratt/src/main/java/com/ashardalon/pratt/commands/impls/GroupingCommand.java b/JPratt/src/main/java/com/ashardalon/pratt/commands/impls/GroupingCommand.java
new file mode 100644
index 0000000..284c1e9
--- /dev/null
+++ b/JPratt/src/main/java/com/ashardalon/pratt/commands/impls/GroupingCommand.java
@@ -0,0 +1,55 @@
+package com.ashardalon.pratt.commands.impls;
+
+import bjc.data.Tree;
+
+import com.ashardalon.pratt.ParserContext;
+import com.ashardalon.pratt.blocks.ParseBlock;
+import com.ashardalon.pratt.commands.AbstractInitialCommand;
+import com.ashardalon.pratt.commands.CommandResult;
+import com.ashardalon.pratt.tokens.Token;
+
+import bjc.data.SimpleTree;
+import bjc.utils.parserutils.ParserException;
+
+/**
+ * A grouping 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 GroupingCommand<K, V, C> extends AbstractInitialCommand<K, V, C> {
+ private final ParseBlock<K, V, C> innerBlock;
+
+ private final Token<K, V> mark;
+
+ /**
+ * Create a new grouping command.
+ *
+ * @param inner
+ * The inner block.
+ *
+ * @param marker
+ * The token to use as the node in the AST.
+ */
+ public GroupingCommand(final ParseBlock<K, V, C> inner, final Token<K, V> marker) {
+ innerBlock = inner;
+
+ mark = marker;
+ }
+
+ @Override
+ protected CommandResult<K, V> intNullDenotation(final Token<K, V> operator, final ParserContext<K, V, C> ctx)
+ throws ParserException {
+ final CommandResult<K,V> resOpr = innerBlock.parse(ctx);
+ Tree<Token<K, V>> opr = resOpr.success();
+ return CommandResult.success(new SimpleTree<>(mark, opr));
+ }
+} \ No newline at end of file