dlv debugger: navigate to type source (shift + f4)

Author: ignatov

src/com/goide/dlv/DlvXValue.java

@@ -20,6 +20,8 @@
 import com.goide.dlv.protocol.DlvRequest;
 import com.goide.psi.GoNamedElement;
 import com.goide.psi.GoTopLevelDeclaration;
+import com.goide.psi.GoTypeSpec;
+import com.goide.stubs.index.GoTypesIndex;
 import com.intellij.icons.AllIcons;
 import com.intellij.lang.ASTNode;
 import com.intellij.openapi.application.ApplicationManager;
@@ -35,6 +37,7 @@
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiFile;
 import com.intellij.psi.SyntaxTraverser;
+import com.intellij.psi.search.GlobalSearchScope;
 import com.intellij.psi.util.PsiTreeUtil;
 import com.intellij.util.Consumer;
 import com.intellij.util.ThreeState;
@@ -50,7 +53,9 @@
 import org.jetbrains.annotations.Nullable;
 
 import javax.swing.*;
+import java.util.Collection;
 import java.util.Iterator;
+import java.util.List;
 import java.util.regex.Pattern;
 
 class DlvXValue extends XNamedValue {
@@ -171,7 +176,7 @@ public void run() {
 
       @Nullable
       private XSourcePosition findPosition() {
-        XDebugSession debugSession = myProcess.getSession();
+        XDebugSession debugSession = getSession();
         if (debugSession == null) return null;
         XStackFrame stackFrame = debugSession.getCurrentStackFrame();
         if (stackFrame == null) return null;
@@ -188,6 +193,17 @@ private XSourcePosition findPosition() {
     });
   }
 
+  @Nullable
+  private Project getProject() {
+    XDebugSession session = getSession();
+    return session != null ? session.getProject() : null;
+  }
+
+  @Nullable
+  private XDebugSession getSession() {
+    return myProcess.getSession();
+  }
+
   @NotNull
   @Override
   public ThreeState computeInlineDebuggerData(@NotNull final XInlineDebuggerDataCallback callback) {
@@ -204,4 +220,29 @@ public void setSourcePosition(@Nullable XSourcePosition sourcePosition) {
   public boolean canNavigateToSource() {
     return true; // for the future compatibility
   }
+
+  @Override
+  public boolean canNavigateToTypeSource() {
+    return myVariable.isStructure() && getProject() != null;
+  }
+
+  @Override
+  public void computeTypeSourcePosition(@NotNull XNavigatable navigatable) {
+    if (!myVariable.isStructure()) return;
+    Project project = getProject();
+    if (project == null) return;
+    String fqn = myVariable.type;
+    List<String> split = StringUtil.split(fqn, ".");
+    if (split.size() == 2) {
+      String name = split.get(1);
+      Collection<GoTypeSpec> types = GoTypesIndex.find(name, project, GlobalSearchScope.allScope(project));
+      for (GoTypeSpec type : types) {
+        if (Comparing.equal(fqn, type.getQualifiedName())) {
+          navigatable.setSourcePosition(XDebuggerUtil.getInstance().createPositionByOffset(
+            type.getContainingFile().getVirtualFile(), type.getTextOffset()));
+          return;
+        }
+      }
+    }
+  }
 }

src/com/goide/dlv/protocol/DlvApi.java

@@ -168,6 +168,10 @@ private boolean isNumber() {
     public boolean isString() { return getKind() == Kind.String; }
 
     public boolean isBool() { return getKind() == Kind.Bool; }
+
+    public boolean isStructure() {
+      return getKind() == Kind.Struct;
+    }
   }
 
   // Goroutine represents the information relevant to Delve from the runtime's