extend ShSupport with variable references

fixed #1149

GitOrigin-RevId: 26788bc196b4f1192210dbb4a3f4e73abff81485

plugins/sh/gen/com/intellij/sh/psi/ShVariable.java

@@ -4,10 +4,14 @@ package com.intellij.sh.psi;
 import java.util.List;
 import org.jetbrains.annotations.*;
 import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiReference;
 
 public interface ShVariable extends ShLiteral {
 
   @NotNull
   PsiElement getVar();
 
+  @NotNull
+  PsiReference[] getReferences();
+
 }

plugins/sh/gen/com/intellij/sh/psi/impl/ShVariableImpl.java

@@ -9,6 +9,7 @@ import com.intellij.psi.PsiElementVisitor;
 import com.intellij.psi.util.PsiTreeUtil;
 import static com.intellij.sh.ShTypes.*;
 import com.intellij.sh.psi.*;
+import com.intellij.psi.PsiReference;
 
 public class ShVariableImpl extends ShLiteralImpl implements ShVariable {
 
@@ -31,4 +32,10 @@ public class ShVariableImpl extends ShLiteralImpl implements ShVariable {
     return findNotNullChildByType(VAR);
   }
 
+  @Override
+  @NotNull
+  public PsiReference[] getReferences() {
+    return ShPsiImplUtil.getReferences(this);
+  }
+
 }

plugins/sh/grammar/sh.bnf

@@ -298,7 +298,10 @@ literal ::= word | string | number | variable {
 }
 private not_lvalue ::= '!' | vars | '$' | brace_expansion | 'file descriptor'
 brace_expansion ::= '{' (word | brace_expansion)* '}'
-variable ::= var {extends=literal}
+variable ::= var {
+  methods=[getReferences]
+  extends=literal
+}
 
 number ::= int | hex | octal {extends=literal}
 string ::= (OPEN_QUOTE (STRING_CONTENT | vars | <<notQuote>>)* CLOSE_QUOTE) | RAW_STRING {

plugins/sh/src/com/intellij/sh/ShSupport.java

@@ -5,6 +5,8 @@ import com.intellij.execution.Executor;
 import com.intellij.execution.configurations.RunProfileState;
 import com.intellij.execution.runners.ExecutionEnvironment;
 import com.intellij.openapi.components.ServiceManager;
+import com.intellij.psi.PsiReference;
+import com.intellij.sh.psi.ShVariable;
 import com.intellij.sh.run.ShRunConfiguration;
 import com.intellij.sh.run.ShRunConfigurationProfileState;
 import org.jetbrains.annotations.NotNull;
@@ -21,6 +23,10 @@ public interface ShSupport {
                                         @NotNull ExecutionEnvironment environment,
                                         @NotNull ShRunConfiguration configuration);
 
+  @NotNull
+  PsiReference[] getVariableReferences(@NotNull ShVariable v);
+  
+  
   class Impl implements ShSupport {
     @Override
     public boolean isExternalFormatterEnabled() { return true; }
@@ -35,5 +41,11 @@ public interface ShSupport {
                                                  @NotNull ShRunConfiguration configuration) {
       return new ShRunConfigurationProfileState(environment.getProject(), configuration);
     }
+
+    @NotNull
+    @Override
+    public PsiReference[] getVariableReferences(@NotNull ShVariable v) {
+      return PsiReference.EMPTY_ARRAY;
+    }
   }
 }

plugins/sh/src/com/intellij/sh/psi/impl/ShPsiImplUtil.java

@@ -3,8 +3,10 @@ package com.intellij.sh.psi.impl;
 
 import com.intellij.psi.PsiReference;
 import com.intellij.psi.impl.source.resolve.reference.ReferenceProvidersRegistry;
+import com.intellij.sh.ShSupport;
 import com.intellij.sh.psi.ShLiteral;
 import com.intellij.sh.psi.ShString;
+import com.intellij.sh.psi.ShVariable;
 import org.jetbrains.annotations.NotNull;
 
 public class ShPsiImplUtil {
@@ -14,4 +16,9 @@ public class ShPsiImplUtil {
            ? ReferenceProvidersRegistry.getReferencesFromProviders(o)
            : PsiReference.EMPTY_ARRAY;
   }
+
+  @NotNull
+  static PsiReference[] getReferences(@NotNull ShVariable o) {
+    return ShSupport.getInstance().getVariableReferences(o);
+  }
 }