Remove Painless Type from e-nodes in favor of Java Class (#28364)

modules/lang-painless/src/main/java/org/elasticsearch/painless/Definition.java

@@ -452,60 +452,60 @@ public Type getType(final Struct struct, final int dimensions) {
         return getTypeInternal(struct, dimensions);
     }
 
-    public Type getBoxedType(Type unboxed) {
-        if (unboxed.clazz == boolean.class) {
-            return BooleanType;
-        } else if (unboxed.clazz == byte.class) {
-            return ByteType;
-        } else if (unboxed.clazz == short.class) {
-            return ShortType;
-        } else if (unboxed.clazz == char.class) {
-            return CharacterType;
-        } else if (unboxed.clazz == int.class) {
-            return IntegerType;
-        } else if (unboxed.clazz == long.class) {
-            return LongType;
-        } else if (unboxed.clazz == float.class) {
-            return FloatType;
-        } else if (unboxed.clazz == double.class) {
-            return DoubleType;
-        }
-
-        return unboxed;
+    public static Class<?> getBoxedType(Class<?> clazz) {
+        if (clazz == boolean.class) {
+            return Boolean.class;
+        } else if (clazz == byte.class) {
+            return Byte.class;
+        } else if (clazz == short.class) {
+            return Short.class;
+        } else if (clazz == char.class) {
+            return Character.class;
+        } else if (clazz == int.class) {
+            return Integer.class;
+        } else if (clazz == long.class) {
+            return Long.class;
+        } else if (clazz == float.class) {
+            return Float.class;
+        } else if (clazz == double.class) {
+            return Double.class;
+        }
+
+        return clazz;
     }
 
-    public Type getUnboxedType(Type boxed) {
-        if (boxed.clazz == Boolean.class) {
-            return booleanType;
-        } else if (boxed.clazz == Byte.class) {
-            return byteType;
-        } else if (boxed.clazz == Short.class) {
-            return shortType;
-        } else if (boxed.clazz == Character.class) {
-            return charType;
-        } else if (boxed.clazz == Integer.class) {
-            return intType;
-        } else if (boxed.clazz == Long.class) {
-            return longType;
-        } else if (boxed.clazz == Float.class) {
-            return floatType;
-        } else if (boxed.clazz == Double.class) {
-            return doubleType;
-        }
-
-        return boxed;
+    public static Class<?> getUnboxedype(Class<?> clazz) {
+        if (clazz == Boolean.class) {
+            return boolean.class;
+        } else if (clazz == Byte.class) {
+            return byte.class;
+        } else if (clazz == Short.class) {
+            return short.class;
+        } else if (clazz == Character.class) {
+            return char.class;
+        } else if (clazz == Integer.class) {
+            return int.class;
+        } else if (clazz == Long.class) {
+            return long.class;
+        } else if (clazz == Float.class) {
+            return float.class;
+        } else if (clazz == Double.class) {
+            return double.class;
+        }
+
+        return clazz;
     }
 
-    public static boolean isConstantType(Type constant) {
-        return constant.clazz == boolean.class ||
-               constant.clazz == byte.class    ||
-               constant.clazz == short.class   ||
-               constant.clazz == char.class    ||
-               constant.clazz == int.class     ||
-               constant.clazz == long.class    ||
-               constant.clazz == float.class   ||
-               constant.clazz == double.class  ||
-               constant.clazz == String.class;
+    public static boolean isConstantType(Class<?> clazz) {
+        return clazz == boolean.class ||
+               clazz == byte.class    ||
+               clazz == short.class   ||
+               clazz == char.class    ||
+               clazz == int.class     ||
+               clazz == long.class    ||
+               clazz == float.class   ||
+               clazz == double.class  ||
+               clazz == String.class;
     }
 
     public static Class<?> ObjectClassTodefClass(Class<?> clazz) {
@@ -579,7 +579,7 @@ public static String ClassToName(Class<?> clazz) {
             }
 
             if (component == def.class) {
-                StringBuilder builder = new StringBuilder("def");
+                StringBuilder builder = new StringBuilder(def.class.getSimpleName());
 
                 for (int dimension = 0; dimension < dimensions; dimensions++) {
                     builder.append("[]");
@@ -588,7 +588,7 @@ public static String ClassToName(Class<?> clazz) {
                 return builder.toString();
             }
         } else if (clazz == def.class) {
-            return "def";
+            return def.class.getSimpleName();
         }
 
         return clazz.getCanonicalName().replace('$', '.');
@@ -606,20 +606,20 @@ public Type ClassToType(Class<?> clazz) {
                 ++dimensions;
             }
 
-            if (clazz == def.class) {
-                return getType(structsMap.get("def"), dimensions);
+            if (component == def.class) {
+                return getType(structsMap.get(def.class.getSimpleName()), dimensions);
             } else {
-                return getType(runtimeMap.get(clazz).struct, dimensions);
+                return getType(runtimeMap.get(component).struct, dimensions);
             }
         } else if (clazz == def.class) {
-            return getType(structsMap.get("def"), 0);
+            return getType(structsMap.get(def.class.getSimpleName()), 0);
         }
 
         return getType(structsMap.get(ClassToName(clazz)), 0);
     }
 
-    public static Class<?> TypeToClass (Type type) {
-        if (type.dynamic) {
+    public static Class<?> TypeToClass(Type type) {
+        if (def.class.getSimpleName().equals(type.struct.name)) {
             return ObjectClassTodefClass(type.clazz);
         }
 
@@ -672,7 +672,8 @@ public Definition(List<Whitelist> whitelists) {
         String origin = null;
 
         // add the universal def type
-        structsMap.put("def", new Struct("def", Object.class, org.objectweb.asm.Type.getType(Object.class)));
+        structsMap.put(def.class.getSimpleName(),
+                new Struct(def.class.getSimpleName(), Object.class, org.objectweb.asm.Type.getType(Object.class)));
 
         try {
             // first iteration collects all the Painless type names that
@@ -777,7 +778,7 @@ public Definition(List<Whitelist> whitelists) {
             copyStruct(painlessStruct.name, painlessSuperStructs);
 
             // copies methods and fields from Object into interface types
-            if (painlessStruct.clazz.isInterface() || ("def").equals(painlessStruct.name)) {
+            if (painlessStruct.clazz.isInterface() || (def.class.getSimpleName()).equals(painlessStruct.name)) {
                 Struct painlessObjectStruct = javaClassesToPainlessStructs.get(Object.class);
 
                 if (painlessObjectStruct != null) {
@@ -835,7 +836,7 @@ public Definition(List<Whitelist> whitelists) {
         charType = getType("char");
         CharacterType = getType("Character");
         ObjectType = getType("Object");
-        DefType = getType("def");
+        DefType = getType(def.class.getSimpleName());
         NumberType = getType("Number");
         StringType = getType("String");
         ExceptionType = getType("Exception");
@@ -1409,7 +1410,7 @@ private Type getTypeInternal(Struct struct, int dimensions) {
             }
         }
 
-        return new Type(name, dimensions, "def".equals(name), struct, clazz, type);
+        return new Type(name, dimensions, def.class.getSimpleName().equals(name), struct, clazz, type);
     }
 
     private int getDimensions(String name) {

modules/lang-painless/src/main/java/org/elasticsearch/painless/node/AExpression.java

@@ -22,7 +22,6 @@
 import org.elasticsearch.painless.AnalyzerCaster;
 import org.elasticsearch.painless.Definition;
 import org.elasticsearch.painless.Definition.Cast;
-import org.elasticsearch.painless.Definition.Type;
 import org.elasticsearch.painless.Locals;
 import org.elasticsearch.painless.Location;
 
@@ -60,15 +59,15 @@ public abstract class AExpression extends ANode {
      * Set to the expected type this node needs to be.  Note this variable
      * is always set by the parent as input and should never be read from.
      */
-    Type expected = null;
+    Class<?> expected = null;
 
     /**
      * Set to the actual type this node is.  Note this variable is always
      * set by the node as output and should only be read from outside of the
      * node itself.  <b>Also, actual can always be read after a cast is
      * called on this node to get the type of the node after the cast.</b>
      */
-    Type actual = null;
+    Class<?> actual = null;
 
     /**
      * Set by {@link EExplicit} if a cast made on an expression node should be
@@ -119,8 +118,7 @@ public abstract class AExpression extends ANode {
      * @return The new child node for the parent node calling this method.
      */
     AExpression cast(Locals locals) {
-        Cast cast =
-            AnalyzerCaster.getLegalCast(location, Definition.TypeToClass(actual), Definition.TypeToClass(expected), explicit, internal);
+        Cast cast = AnalyzerCaster.getLegalCast(location, actual, expected, explicit, internal);
 
         if (cast == null) {
             if (constant == null || this instanceof EConstant) {

modules/lang-painless/src/main/java/org/elasticsearch/painless/node/AStoreable.java

@@ -19,7 +19,6 @@
 
 package org.elasticsearch.painless.node;
 
-import org.elasticsearch.painless.Definition.Type;
 import org.elasticsearch.painless.Globals;
 import org.elasticsearch.painless.Location;
 import org.elasticsearch.painless.MethodWriter;
@@ -86,7 +85,7 @@ abstract class AStoreable extends AExpression {
      * actual will be set to this value. This is used for an optimization
      * during assignment to def type targets.
      */
-    abstract void updateActual(Type actual);
+    abstract void updateActual(Class<?> actual);
 
     /**
      * Called before a storeable node is loaded or stored.  Used to load prefixes and