Merge pull request objectionary#285 from h1alexbel/266

bug(objectionary#266): correct `sparse-decoration` detection

src/main/resources/org/eolang/lints/misc/sparse-decoration.xsl

@@ -23,11 +23,12 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 -->
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:eo="https://www.eolang.org" id="sparse-decoration" version="2.0">
+  <xsl:import href="/org/eolang/parser/_funcs.xsl"/>
   <xsl:import href="/org/eolang/funcs/lineno.xsl"/>
   <xsl:output encoding="UTF-8" method="xml"/>
   <xsl:template match="/">
     <defects>
-      <xsl:for-each select="//o[count(o)=1 and o[@name='@' and (not(@base) or @base!='^') and not(o[@base='∅'])]]">
+      <xsl:for-each select="//o[eo:abstract(.) and count(o)=1 and o[1][@name='@']]">
         <xsl:element name="defect">
           <xsl:attribute name="line">
             <xsl:value-of select="eo:lineno(@line)"/>

src/test/resources/org/eolang/lints/packs/sparse-decoration/no-sparse-because-name.yaml

@@ -0,0 +1,33 @@
+# The MIT License (MIT)
+#
+# Copyright (c) 2016-2025 Objectionary.com
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+---
+sheets:
+  - /org/eolang/lints/misc/sparse-decoration.xsl
+asserts:
+  - /defects[count(defect[@severity='warning'])=0]
+input: |
+  # No comments.
+  [] > foo
+    if. > test
+      a
+      42
+      88

src/test/resources/org/eolang/lints/packs/sparse-decoration/sparse-application.yaml

@@ -26,8 +26,8 @@ asserts:
   - /defects[count(defect[@severity='warning'])=1]
 input: |
   # No comments.
-  [] > decorates-application
-    if > @
-      true
-      5
-      five
+  [] > test
+    if. > @
+      a
+      42
+      88

src/test/resources/org/eolang/lints/packs/sparse-decoration/sparse-formation-with-if.yaml

@@ -0,0 +1,35 @@
+# The MIT License (MIT)
+#
+# Copyright (c) 2016-2025 Objectionary.com
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+---
+sheets:
+  - /org/eolang/lints/misc/sparse-decoration.xsl
+asserts:
+  - /defects[count(defect[@severity='warning'])=2]
+input: |
+  # No comments.
+  [] > test
+    # No comments.
+    [] > @
+      if. > @
+        a
+        42
+        88