8338543: ClassBuilder withMethod builders should cache the method type symbol

Reviewed-by: asotona

Author: liach

src/java.base/share/classes/java/lang/classfile/ClassBuilder.java

@@ -276,10 +276,7 @@ default ClassBuilder withMethodBody(String name,
                                         MethodTypeDesc descriptor,
                                         int methodFlags,
                                         Consumer<? super CodeBuilder> handler) {
-        return withMethodBody(constantPool().utf8Entry(name),
-                              constantPool().utf8Entry(descriptor),
-                              methodFlags,
-                              handler);
+        return withMethod(name, descriptor, methodFlags, mb -> mb.withCode(handler));
     }
 
     /**

src/java.base/share/classes/jdk/internal/classfile/impl/ChainedClassBuilder.java

@@ -24,6 +24,7 @@
  */
 package jdk.internal.classfile.impl;
 
+import java.lang.constant.MethodTypeDesc;
 import java.util.function.Consumer;
 
 import java.lang.classfile.*;
@@ -78,6 +79,15 @@ public ClassBuilder withMethod(Utf8Entry name, Utf8Entry descriptor, int flags,
         return this;
     }
 
+    @Override
+    public ClassBuilder withMethod(String name, MethodTypeDesc descriptor, int flags, Consumer<? super MethodBuilder> handler) {
+        var mb = new BufferedMethodBuilder(terminal.constantPool, terminal.context,
+                constantPool().utf8Entry(name), constantPool().utf8Entry(descriptor), flags, null);
+        mb.mDesc = descriptor;
+        consumer.accept(mb.run(handler).toModel());
+        return this;
+    }
+
     @Override
     public ClassBuilder transformMethod(MethodModel method, MethodTransform transform) {
         BufferedMethodBuilder builder = new BufferedMethodBuilder(terminal.constantPool, terminal.context,

src/java.base/share/classes/jdk/internal/classfile/impl/DirectClassBuilder.java

@@ -26,6 +26,7 @@
 package jdk.internal.classfile.impl;
 
 import java.lang.constant.ConstantDescs;
+import java.lang.constant.MethodTypeDesc;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -106,6 +107,13 @@ public ClassBuilder withMethod(Utf8Entry name,
                                   .run(handler));
     }
 
+    @Override
+    public ClassBuilder withMethod(String name, MethodTypeDesc descriptor, int flags, Consumer<? super MethodBuilder> handler) {
+        var method = new DirectMethodBuilder(constantPool, context, constantPool.utf8Entry(name), constantPool.utf8Entry(descriptor), flags, null);
+        method.mDesc = descriptor;
+        return withMethod(method.run(handler));
+    }
+
     @Override
     public ClassBuilder transformMethod(MethodModel method, MethodTransform transform) {
         DirectMethodBuilder builder = new DirectMethodBuilder(constantPool, context, method.methodName(),