Revision: 10183
Author:   sco...@google.com
Date:     Fri May 13 08:44:36 2011
Log:      Decentralize nullmethod/nullfield.

http://gwt-code-reviews.appspot.com/1442802/

Review by: jbrosenb...@google.com
http://code.google.com/p/google-web-toolkit/source/detail?r=10183

Modified:
 /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/JField.java
 /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/JMethod.java
 /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/JProgram.java
 /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/js/JsniClassLiteral.java
 /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/js/JsniFieldRef.java
 /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/js/JsniMethodRef.java
 /trunk/dev/core/src/com/google/gwt/dev/jjs/impl/GwtAstBuilder.java
/trunk/dev/core/src/com/google/gwt/dev/jjs/impl/ImplementClassLiteralsAsFields.java

=======================================
--- /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/JField.java Tue Apr 19 10:10:18 2011 +++ /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/JField.java Fri May 13 08:44:36 2011
@@ -67,6 +67,17 @@
     }
   }

+ private static class ExternalSerializedNullField implements Serializable { + public static final ExternalSerializedNullField INSTANCE = new ExternalSerializedNullField();
+
+    private Object readResolve() {
+      return NULL_FIELD;
+    }
+  }
+
+ public static final JField NULL_FIELD = new JField(SourceOrigin.UNKNOWN, "nullField", null,
+      JNullType.INSTANCE, false, Disposition.FINAL);
+
   private final JDeclaredType enclosingType;
   private final boolean isCompileTimeConstant;
   private final boolean isStatic;
@@ -153,6 +164,8 @@
   protected Object writeReplace() {
     if (enclosingType != null && enclosingType.isExternal()) {
       return new ExternalSerializedForm(this);
+    } else if (this == NULL_FIELD) {
+      return ExternalSerializedNullField.INSTANCE;
     } else {
       return this;
     }
=======================================
--- /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/JMethod.java Thu May 5 06:03:58 2011 +++ /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/JMethod.java Fri May 13 08:44:36 2011
@@ -55,8 +55,24 @@
     }
   }

+ private static class ExternalSerializedNullMethod implements Serializable { + public static final ExternalSerializedNullMethod INSTANCE = new ExternalSerializedNullMethod();
+
+    private Object readResolve() {
+      return NULL_METHOD;
+    }
+  }
+
+ public static final JMethod NULL_METHOD = new JMethod(SourceOrigin.UNKNOWN, "nullMethod", null,
+      JNullType.INSTANCE, false, false, true, false);
+
   private static final String TRACE_METHOD_WILDCARD = "*";

+  static {
+    NULL_METHOD.setSynthetic();
+    NULL_METHOD.freezeParamTypes();
+  }
+
   private static void trace(String title, String code) {
     System.out.println("---------------------------");
     System.out.println(title + ":");
@@ -352,6 +368,8 @@
   protected Object writeReplace() {
     if (enclosingType != null && enclosingType.isExternal()) {
       return new ExternalSerializedForm(this);
+    } else if (this == NULL_METHOD) {
+      return ExternalSerializedNullMethod.INSTANCE;
     } else {
       return this;
     }
=======================================
--- /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/JProgram.java Tue May 10 05:59:20 2011 +++ /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/JProgram.java Fri May 13 08:44:36 2011
@@ -335,10 +335,6 @@

private final Map<JMethod, JMethod> instanceToStaticMap = new IdentityHashMap<JMethod, JMethod>();

-  private JField nullField;
-
-  private JMethod nullMethod;
-
   private Map<JReferenceType, Integer> queryIds;

   /**
@@ -855,22 +851,11 @@
   }

   public JField getNullField() {
-    if (nullField == null) {
-      nullField =
- new JField(createSourceInfoSynthetic(JProgram.class), "nullField", null,
-              JNullType.INSTANCE, false, Disposition.FINAL);
-    }
-    return nullField;
+    return JField.NULL_FIELD;
   }

   public JMethod getNullMethod() {
-    if (nullMethod == null) {
-      nullMethod =
- new JMethod(createSourceInfoSynthetic(JProgram.class), "nullMethod", null,
-              JNullType.INSTANCE, false, false, true, false);
-      nullMethod.setSynthetic();
-    }
-    return nullMethod;
+    return JMethod.NULL_METHOD;
   }

   public int getQueryId(JReferenceType elementType) {
=======================================
--- /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/js/JsniClassLiteral.java Tue May 10 05:59:20 2011 +++ /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/js/JsniClassLiteral.java Fri May 13 08:44:36 2011
@@ -28,6 +28,7 @@

   public JsniClassLiteral(SourceInfo info, String ident, JType type) {
     super(info, type);
+    assert ident != null;
     this.ident = ident;
   }

=======================================
--- /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/js/JsniFieldRef.java Tue Apr 19 10:10:18 2011 +++ /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/js/JsniFieldRef.java Fri May 13 08:44:36 2011
@@ -34,6 +34,7 @@
public JsniFieldRef(SourceInfo info, String ident, JField field, JDeclaredType enclosingType,
       boolean isLvalue) {
super(info, field.isStatic() ? null : JNullLiteral.INSTANCE, field, enclosingType);
+    assert ident != null;
     this.ident = ident;
     this.isLvalue = isLvalue;
   }
=======================================
--- /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/js/JsniMethodRef.java Tue Apr 19 10:10:18 2011 +++ /trunk/dev/core/src/com/google/gwt/dev/jjs/ast/js/JsniMethodRef.java Fri May 13 08:44:36 2011
@@ -35,6 +35,7 @@
public JsniMethodRef(SourceInfo info, String ident, JMethod method, JClassType jsoType) {
     // Just use a null literal as the qualifier on a non-static method
     super(info, method.isStatic() ? null : JNullLiteral.INSTANCE, method);
+    assert ident != null;
     this.ident = ident;
     this.jsoType = jsoType;
   }
=======================================
--- /trunk/dev/core/src/com/google/gwt/dev/jjs/impl/GwtAstBuilder.java Thu May 12 10:09:08 2011 +++ /trunk/dev/core/src/com/google/gwt/dev/jjs/impl/GwtAstBuilder.java Fri May 13 08:44:36 2011
@@ -249,6 +249,12 @@
           SourceInfo info = x.getSourceInfo();
           if (binding == null) {
             assert ident.startsWith("@null::");
+            if ("@null::nullMethod()".equals(ident)) {
+              processMethod(x, info, JMethod.NULL_METHOD);
+            } else {
+              assert "@null::nullField".equals(ident);
+              processField(x, info, JField.NULL_FIELD, ctx);
+            }
           } else if (binding instanceof TypeBinding) {
             JType type = typeMap.get((TypeBinding) binding);
             processClassLiteral(x, info, type, ctx);
=======================================
--- /trunk/dev/core/src/com/google/gwt/dev/jjs/impl/ImplementClassLiteralsAsFields.java Wed Apr 20 08:47:17 2011 +++ /trunk/dev/core/src/com/google/gwt/dev/jjs/impl/ImplementClassLiteralsAsFields.java Fri May 13 08:44:36 2011
@@ -76,6 +76,19 @@
     new ImplementClassLiteralsAsFields(program).execImpl();
     normalizerEvent.end();
   }
+
+  private static String createIdent(JMethod method) {
+    StringBuilder sb = new StringBuilder();
+    sb.append(method.getEnclosingType().getName());
+    sb.append("::");
+    sb.append(method.getName());
+    sb.append('(');
+    for (JType type : method.getOriginalParamTypes()) {
+      sb.append(type.getJsniSignatureName());
+    }
+    sb.append(')');
+    return sb.toString();
+  }

   private static String getClassName(String fullName) {
     int pos = fullName.lastIndexOf(".");
@@ -223,8 +236,10 @@
         if (valueOfMethod == null) {
throw new InternalCompilerException("Could not find enum valueOf() method");
         }
- call.addArg(new JsniMethodRef(info, null, valuesMethod, program.getJavaScriptObject())); - call.addArg(new JsniMethodRef(info, null, valueOfMethod, program.getJavaScriptObject())); + call.addArg(new JsniMethodRef(info, createIdent(valuesMethod), valuesMethod, program
+            .getJavaScriptObject()));
+ call.addArg(new JsniMethodRef(info, createIdent(valueOfMethod), valueOfMethod, program
+            .getJavaScriptObject()));
       } else if (isEnumOrSubclass) {
         // A subclass of an enum class
         call.addArg(JNullLiteral.INSTANCE);

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