8311084: Add typeSymbol() API for applicable constant pool entries

Reviewed-by: briangoetz, asotona

Author: liach

src/java.base/share/classes/jdk/internal/classfile/constantpool/ConstantDynamicEntry.java

@@ -26,6 +26,8 @@
 
 import jdk.internal.classfile.TypeKind;
 import jdk.internal.classfile.impl.Util;
+
+import java.lang.constant.ClassDesc;
 import java.lang.constant.ConstantDesc;
 import java.lang.constant.DynamicConstantDesc;
 
@@ -40,6 +42,13 @@ public sealed interface ConstantDynamicEntry
         extends DynamicConstantPoolEntry, LoadableConstantEntry
         permits AbstractPoolEntry.ConstantDynamicEntryImpl {
 
+    /**
+     * {@return a symbolic descriptor for the dynamic constant's type}
+     */
+    default ClassDesc typeSymbol() {
+        return Util.fieldTypeSymbol(nameAndType());
+    }
+
     @Override
     default ConstantDesc constantValue() {
         return asSymbol();
@@ -51,7 +60,7 @@ default ConstantDesc constantValue() {
     default DynamicConstantDesc<?> asSymbol() {
         return DynamicConstantDesc.ofNamed(bootstrap().bootstrapMethod().asSymbol(),
                                            name().stringValue(),
-                                           Util.fieldTypeSymbol(nameAndType()),
+                                           typeSymbol(),
                                            bootstrap().arguments().stream()
                                                       .map(LoadableConstantEntry::constantValue)
                                                       .toArray(ConstantDesc[]::new));

src/java.base/share/classes/jdk/internal/classfile/constantpool/FieldRefEntry.java

@@ -25,6 +25,9 @@
 package jdk.internal.classfile.constantpool;
 
 import jdk.internal.classfile.impl.AbstractPoolEntry;
+import jdk.internal.classfile.impl.Util;
+
+import java.lang.constant.ClassDesc;
 
 /**
  * Models a {@code CONSTANT_Fieldref_info} constant in the constant pool of a
@@ -34,4 +37,10 @@
 public sealed interface FieldRefEntry extends MemberRefEntry
         permits AbstractPoolEntry.FieldRefEntryImpl {
 
+    /**
+     * {@return a symbolic descriptor for the field's type}
+     */
+    default ClassDesc typeSymbol() {
+        return Util.fieldTypeSymbol(nameAndType());
+    }
 }

src/java.base/share/classes/jdk/internal/classfile/constantpool/InterfaceMethodRefEntry.java

@@ -25,6 +25,9 @@
 package jdk.internal.classfile.constantpool;
 
 import jdk.internal.classfile.impl.AbstractPoolEntry;
+import jdk.internal.classfile.impl.Util;
+
+import java.lang.constant.MethodTypeDesc;
 
 /**
  * Models a {@code CONSTANT_InterfaceMethodRef_info} constant in the constant pool of a
@@ -35,4 +38,10 @@ public sealed interface InterfaceMethodRefEntry
         extends MemberRefEntry
         permits AbstractPoolEntry.InterfaceMethodRefEntryImpl {
 
+    /**
+     * {@return a symbolic descriptor for the interface method's type}
+     */
+    default MethodTypeDesc typeSymbol() {
+        return Util.methodTypeSymbol(nameAndType());
+    }
 }

src/java.base/share/classes/jdk/internal/classfile/constantpool/InvokeDynamicEntry.java

@@ -26,6 +26,7 @@
 
 import java.lang.constant.ConstantDesc;
 import java.lang.constant.DynamicCallSiteDesc;
+import java.lang.constant.MethodTypeDesc;
 
 import jdk.internal.classfile.impl.AbstractPoolEntry;
 import jdk.internal.classfile.impl.Util;
@@ -38,13 +39,20 @@ public sealed interface InvokeDynamicEntry
         extends DynamicConstantPoolEntry
         permits AbstractPoolEntry.InvokeDynamicEntryImpl {
 
+    /**
+     * {@return a symbolic descriptor for the call site's invocation type}
+     */
+    default MethodTypeDesc typeSymbol() {
+        return Util.methodTypeSymbol(nameAndType());
+    }
+
     /**
      * {@return a symbolic descriptor for the dynamic call site}
      */
     default DynamicCallSiteDesc asSymbol() {
         return DynamicCallSiteDesc.of(bootstrap().bootstrapMethod().asSymbol(),
                                       name().stringValue(),
-                                      Util.methodTypeSymbol(nameAndType()),
+                                      typeSymbol(),
                                       bootstrap().arguments().stream()
                                                  .map(LoadableConstantEntry::constantValue)
                                                  .toArray(ConstantDesc[]::new));

src/java.base/share/classes/jdk/internal/classfile/constantpool/MethodRefEntry.java

@@ -25,6 +25,9 @@
 package jdk.internal.classfile.constantpool;
 
 import jdk.internal.classfile.impl.AbstractPoolEntry;
+import jdk.internal.classfile.impl.Util;
+
+import java.lang.constant.MethodTypeDesc;
 
 /**
  * Models a {@code CONSTANT_MethodRef_info} constant in the constant pool of a
@@ -34,4 +37,10 @@
 public sealed interface MethodRefEntry extends MemberRefEntry
         permits AbstractPoolEntry.MethodRefEntryImpl {
 
+    /**
+     * {@return a symbolic descriptor for the method's type}
+     */
+    default MethodTypeDesc typeSymbol() {
+        return Util.methodTypeSymbol(nameAndType());
+    }
 }

src/java.base/share/classes/jdk/internal/classfile/instruction/FieldInstruction.java

@@ -77,7 +77,7 @@ default Utf8Entry type() {
      * {@return a symbolic descriptor for the type of the field}
      */
     default ClassDesc typeSymbol() {
-        return Util.fieldTypeSymbol(field().nameAndType());
+        return field().typeSymbol();
     }
 
     /**

src/java.base/share/classes/jdk/internal/classfile/instruction/InvokeDynamicInstruction.java

@@ -70,7 +70,7 @@ default Utf8Entry type() {
      * {@return the invocation type of the call site, as a symbolic descriptor}
      */
     default MethodTypeDesc typeSymbol() {
-        return Util.methodTypeSymbol(invokedynamic().nameAndType());
+        return invokedynamic().typeSymbol();
     }
 
     /**