feat(objectionary#834): speed up vars-float-down.xsl a bit more

src/it/jna/invoker.properties

@@ -30,4 +30,4 @@
 #  Just to compare, the 'short' path takes 13 seconds to run, while the 'full' path
 #  takes 31 minutes.
 invoker.goals=clean verify -e -B
-invoker.profiles=short
+invoker.profiles=full

src/main/java/org/eolang/jeo/representation/CanonicalXmir.java

@@ -165,7 +165,7 @@ private static XML unroll(final XML parsed) {
                     ).back()
                 ),
                 CanonicalXmir.class,
-                20
+                5
             )
         ).pass(parsed);
     }

src/main/resources/org/eolang/parser/vars-float-down.xsl

@@ -55,7 +55,13 @@ SOFTWARE.
       <xsl:apply-templates select="node()|@*"/>
     </xsl:copy>
   </xsl:template>
-  <xsl:template match="o[@ref and @ref!='' and not(ancestor::o[@ref])]">
+  <xsl:template match="o[@ref]">
+    <xsl:apply-templates select="." mode="non-empty-ref"/>
+  </xsl:template>
+  <xsl:template match="o[@ref!='']" mode="non-empty-ref">
+    <xsl:apply-templates select="." mode="without-top-ref"/>
+  </xsl:template>
+  <xsl:template match="o[not(ancestor::o[@ref])]" mode="without-top-ref">
     <xsl:variable name="reference" select="@ref"/>
     <xsl:variable name="found" select="key('o-by-line', $reference)"/>
     <xsl:element name="o">

src/test/java/org/eolang/jeo/representation/CanonicalXmirTest.java

@@ -24,8 +24,10 @@
 package org.eolang.jeo.representation;
 
 import com.jcabi.matchers.XhtmlMatchers;
+import com.jcabi.xml.XML;
 import com.jcabi.xml.XMLDocument;
 import java.util.Collections;
+import org.cactoos.io.ResourceOf;
 import org.eolang.jeo.representation.bytecode.BytecodeClass;
 import org.eolang.jeo.representation.bytecode.BytecodeClassProperties;
 import org.eolang.jeo.representation.bytecode.BytecodeMethod;
@@ -124,4 +126,30 @@ void unrollsSequenceOfValuesCorrectly() {
             )
         );
     }
+
+    @Test
+    void transfomsBigFile() throws Exception {
+        final String name = "Union.xmir";
+
+        final long start = System.currentTimeMillis();
+        final XML actual = new CanonicalXmir(
+            new XMLDocument(
+                new ResourceOf(String.format("xmir/unphi/%s", name)).stream()
+            )
+        ).plain();
+        final long end = System.currentTimeMillis();
+        System.out.printf(
+            "CanonicalXmirTest.transfomsBigFile: %s: %d ms\n",
+            name,
+            end - start
+        );
+        final XML expected = new XMLDocument(
+            new ResourceOf(String.format("xmir/unroll/%s", name)).stream());
+        MatcherAssert.assertThat(
+            "The XMIR should be transformed correctly",
+            actual,
+            Matchers.equalTo(expected)
+        );
+
+    }
 }