From ac8b0a5c3d7cc0c7e557b3234da15a7a848f3799 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Pol=C3=A1k?= <456647@muni.cz>
Date: Wed, 15 Dec 2021 13:44:13 +0100
Subject: [PATCH] Fix UnreachableAnnotation

Took 23 minutes
---
 .../impl/UnreachableAnnotation.java           | 63 ++++++++++---------
 src/main/resources/META-INF/plugin.xml        |  1 +
 2 files changed, 36 insertions(+), 28 deletions(-)

diff --git a/src/main/java/glslplugin/annotation/impl/UnreachableAnnotation.java b/src/main/java/glslplugin/annotation/impl/UnreachableAnnotation.java
index e909b8c..4dc3162 100755
--- a/src/main/java/glslplugin/annotation/impl/UnreachableAnnotation.java
+++ b/src/main/java/glslplugin/annotation/impl/UnreachableAnnotation.java
@@ -26,57 +26,64 @@
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.TokenType;
 import com.intellij.psi.tree.IElementType;
+import com.intellij.psi.util.PsiTreeUtil;
 import glslplugin.annotation.Annotator;
 import glslplugin.lang.elements.GLSLElement;
 import glslplugin.lang.elements.GLSLElementTypes;
 import glslplugin.lang.elements.GLSLTokenTypes;
+import glslplugin.lang.elements.declarations.GLSLFunctionDefinition;
 import glslplugin.lang.elements.statements.GLSLLabelStatement;
 import glslplugin.lang.elements.statements.GLSLStatement;
 import org.jetbrains.annotations.NotNull;
 
-public class UnreachableAnnotation extends Annotator<GLSLStatement> {
+import java.util.Collection;
+
+public class UnreachableAnnotation extends Annotator<GLSLFunctionDefinition> {
     private final TextAttributesKey unreachableAttributes;
 
     public UnreachableAnnotation() {
         unreachableAttributes = TextAttributesKey.createTextAttributesKey("GLSL.UNREACHABLE", CodeInsightColors.NOT_USED_ELEMENT_ATTRIBUTES);
     }
 
-    public void annotate(GLSLStatement expr, AnnotationHolder holder) {
-        GLSLStatement.TerminatorScope scope = expr.getTerminatorScope();
-        if (scope == GLSLStatement.TerminatorScope.NONE) return;
+    public void annotate(GLSLFunctionDefinition function, AnnotationHolder holder) {
+        final Collection<GLSLStatement> statements = PsiTreeUtil.findChildrenOfType(function, GLSLStatement.class);
+        for (GLSLStatement statement : statements) {
+            GLSLStatement.TerminatorScope scope = statement.getTerminatorScope();
+            if (scope == GLSLStatement.TerminatorScope.NONE) continue;
 
-        if (expr.getParent() == null
-                || expr.getParent().getNode().getElementType() != GLSLElementTypes.COMPOUND_STATEMENT) {
-            return;
-        }
+            final PsiElement parent = statement.getParent();
+            if (parent == null || parent.getNode().getElementType() != GLSLElementTypes.COMPOUND_STATEMENT) {
+                continue;
+            }
 
-        PsiElement element = expr.getNextSibling();
-        while (element != null) {
-            if (element instanceof GLSLElement && !GLSLTokenTypes.PREPROCESSOR_DIRECTIVES.contains(element.getNode().getElementType())) {
-                if (element instanceof GLSLLabelStatement) return;
-                PsiElement child = element.getFirstChild();
+            PsiElement element = statement.getNextSibling();
+            while (element != null) {
+                if (element instanceof GLSLElement && !GLSLTokenTypes.PREPROCESSOR_DIRECTIVES.contains(element.getNode().getElementType())) {
+                    if (element instanceof GLSLLabelStatement) break;
+                    PsiElement child = element.getFirstChild();
 
-                if(child == null){
-                    holder.newAnnotation(HighlightSeverity.WARNING, "Unreachable expression").range(element).textAttributes(unreachableAttributes).create();
-                }else{
-                    do {
-                        IElementType type = child.getNode().getElementType();
-                        if(!GLSLTokenTypes.PREPROCESSOR_DIRECTIVES.contains(type) && type != TokenType.WHITE_SPACE){
-                            if (child instanceof GLSLLabelStatement) return;
-                            holder.newAnnotation(HighlightSeverity.WARNING, "Unreachable expression").range(child).textAttributes(unreachableAttributes).create();
-                        }
-                        child = child.getNextSibling();
-                    }while(child != null);
-                }
+                    if (child == null) {
+                        holder.newAnnotation(HighlightSeverity.WARNING, "Unreachable expression").range(element).textAttributes(unreachableAttributes).create();
+                    } else {
+                        do {
+                            IElementType type = child.getNode().getElementType();
+                            if(!GLSLTokenTypes.PREPROCESSOR_DIRECTIVES.contains(type) && type != TokenType.WHITE_SPACE){
+                                if (child instanceof GLSLLabelStatement) break;
+                                holder.newAnnotation(HighlightSeverity.WARNING, "Unreachable expression").range(child).textAttributes(unreachableAttributes).create();
+                            }
+                            child = child.getNextSibling();
+                        } while(child != null);
+                    }
 
+                }
+                element = element.getNextSibling();
             }
-            element = element.getNextSibling();
         }
     }
 
     @NotNull
     @Override
-    public Class<GLSLStatement> getElementType() {
-        return GLSLStatement.class;
+    public Class<GLSLFunctionDefinition> getElementType() {
+        return GLSLFunctionDefinition.class;
     }
 }
diff --git a/src/main/resources/META-INF/plugin.xml b/src/main/resources/META-INF/plugin.xml
index e7c4165..96f31cf 100755
--- a/src/main/resources/META-INF/plugin.xml
+++ b/src/main/resources/META-INF/plugin.xml
@@ -31,6 +31,7 @@
     <!-- https://intellij-support.jetbrains.com/hc/en-us/articles/206544879-Selecting-the-JDK-version-the-IDE-will-run-under -->
     <!-- Until build is not set, because we hope it will work. -->
     <idea-version since-build="203.5981.155"/>
+    <depends>com.intellij.modules.platform</depends>
     <depends>com.intellij.modules.lang</depends>
 
     <change-notes><![CDATA[