add delete all (#2119)

malloydata · Feb 2, 2025 · 0920799 · 0920799
1 parent d658409
commit 0920799
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Showing 3 changed files with 11 additions and 1 deletion.
diff --git a/packages/malloy/src/lang/grammar/MalloyTag.g4 b/packages/malloy/src/lang/grammar/MalloyTag.g4
@@ -29,6 +29,7 @@ tagSpec
   | propName EQ DOTTY? properties      # tagReplaceProperties
   | propName properties                # tagUpdateProperties
   | MINUS? propName                    # tagDef
+  | MINUS_DOTTY                        # tagEmpty
   ;
 
 string
@@ -63,6 +64,7 @@ reference: RF_BEG propName RF_END;
 arrayValue: AR_BEG arrayElement (COMMA arrayElement)* COMMA? AR_END;
 properties: PR_BEG (DOTTY | (tagSpec*)) PR_END;
 
+MINUS_DOTTY: '-...';
 DOTTY: '...';
 DOT: '.';
 MINUS: '-';

diff --git a/packages/malloy/src/tags.ts b/packages/malloy/src/tags.ts
@@ -32,6 +32,7 @@ import {
   ReferenceContext,
   StringContext,
   TagDefContext,
+  TagEmptyContext,
   TagEqContext,
   TagLineContext,
   TagReplacePropertiesContext,
@@ -639,4 +640,10 @@ class TaglineParser
     }
     return buildOn;
   }
+
+  visitTagEmpty(ctx: TagEmptyContext): Tag {
+    const tagList = ctx['buildOn'] as Tag;
+    tagList.properties = {};
+    return tagList;
+  }
 }
diff --git a/test/src/core/tags.spec.ts b/test/src/core/tags.spec.ts
@@ -155,12 +155,13 @@ describe('tagParse to Tag', () => {
         },
       },
     ],
+    ['can remove.properties -...', {}],
   ];
   test.each(tagTests)('tag %s', (expression: string, expected: TagDict) => {
     expect(expression).tagsAre(expected);
   });
   test.skip('unskip to debug just one of the expressions', () => {
-    const x: TagTestTuple = ['x x.y', {x: {properties: {y: {}}}}];
+    const x: TagTestTuple = ['word -...', {}];
     expect(x[0]).tagsAre(x[1]);
   });
   test('inherits can be over-ridden', () => {