Added support for referencing / refactoring of global variables and symbols. Added getPresentation() for structural view, but does not seem to be working yet. Also Find Usages still reports "Unclassified" :-/

src/test/java/de/platon42/intellij/plugins/m68k/refs/M68kReferenceContributorTest.kt

@@ -8,7 +8,9 @@ import de.platon42.intellij.jupiter.MyFixture
 import de.platon42.intellij.jupiter.TestDataPath
 import de.platon42.intellij.jupiter.TestDataSubPath
 import de.platon42.intellij.plugins.m68k.AbstractM68kTest
+import de.platon42.intellij.plugins.m68k.psi.M68kGlobalLabel
 import de.platon42.intellij.plugins.m68k.psi.M68kLocalLabel
+import de.platon42.intellij.plugins.m68k.psi.M68kSymbolDefinition
 import de.platon42.intellij.plugins.m68k.psi.M68kSymbolReference
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
@@ -36,4 +38,38 @@ internal class M68kReferenceContributorTest : AbstractM68kTest() {
             .extracting<String> { (it as LookupElementBuilder).lookupString }
             .containsExactlyInAnyOrderElementsOf(listOf("loop$", "loop$", ".skip"))
     }
+
+    @Test
+    internal fun reference_to_global_label_can_be_renamed(@MyFixture myFixture: CodeInsightTestFixture) {
+        val file = myFixture.configureByFile("global_labels.asm")
+        assertThat(myFixture.elementAtCaret).isInstanceOf(M68kGlobalLabel::class.java)
+            .extracting(PsiElement::getText).isEqualTo("main")
+
+        val reference = file.findReferenceAt(myFixture.editor.caretModel.offset - 1)!!
+        assertThat(reference).isInstanceOf(M68kGlobalLabelSymbolReference::class.java)
+        assertThat(reference.variants).hasOnlyElementsOfType(LookupElementBuilder::class.java)
+            .extracting<String> { (it as LookupElementBuilder).lookupString }
+            .containsExactlyInAnyOrder("main", "init", "exit")
+
+        myFixture.renameElementAtCaret("intro_main")
+
+        myFixture.checkResultByFile("global_labels_after_rename.asm")
+    }
+
+    @Test
+    internal fun reference_to_symbol_can_be_renamed(@MyFixture myFixture: CodeInsightTestFixture) {
+        val file = myFixture.configureByFile("symbol_assignment.asm")
+        assertThat(myFixture.elementAtCaret).isInstanceOf(M68kSymbolDefinition::class.java)
+            .extracting(PsiElement::getText).isEqualTo("PIC_HEIGTH")
+
+        myFixture.renameElementAtCaret("PIC_HEIGHT")
+
+        val reference = file.findReferenceAt(myFixture.editor.caretModel.offset)!!
+        assertThat(reference).isInstanceOf(M68kGlobalLabelSymbolReference::class.java)
+        assertThat(reference.variants).hasOnlyElementsOfType(LookupElementBuilder::class.java)
+            .extracting<String> { (it as LookupElementBuilder).lookupString }
+            .containsExactlyInAnyOrder("main", "init", "exit", "PIC_WIDTH", "PIC_HEIGHT")
+
+        myFixture.checkResultByFile("symbol_assignment_after_rename.asm")
+    }
 }

src/test/resources/references/labels/global_labels.asm

@@ -0,0 +1,13 @@
+        bsr     init
+        bsr     main<caret>
+        bsr     exit
+        rts
+
+init    moveq.l #-1,d0
+        rts
+
+main    moveq.l #0,d0
+        rts
+
+exit    illegal
+        rts

src/test/resources/references/labels/global_labels_after_rename.asm

@@ -0,0 +1,13 @@
+        bsr     init
+        bsr     intro_main
+        bsr     exit
+        rts
+
+init    moveq.l #-1,d0
+        rts
+
+intro_main    moveq.l #0,d0
+        rts
+
+exit    illegal
+        rts

src/test/resources/references/labels/symbol_assignment.asm

@@ -0,0 +1,17 @@
+PIC_WIDTH = 320
+PIC_HEIGTH equ 256
+
+        bsr     init
+        bsr     main
+        bsr     exit
+        rts
+
+init    move.w  #PIC_WIDTH,d0
+        move.w  #PIC_<caret>HEIGTH,d1
+        rts
+
+main    moveq.l #0,d0
+        rts
+
+exit    illegal
+        rts

src/test/resources/references/labels/symbol_assignment_after_rename.asm

@@ -0,0 +1,17 @@
+PIC_WIDTH = 320
+PIC_HEIGHT equ 256
+
+        bsr     init
+        bsr     main
+        bsr     exit
+        rts
+
+init    move.w  #PIC_WIDTH,d0
+        move.w  #PIC_HEIGHT,d1
+        rts
+
+main    moveq.l #0,d0
+        rts
+
+exit    illegal
+        rts