--- a/langtools/test/tools/javac/types/TypeHarness.java Fri Jul 08 17:36:34 2016 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,333 +0,0 @@
-/*
- * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-import com.sun.tools.javac.code.BoundKind;
-import com.sun.tools.javac.code.Flags;
-import com.sun.tools.javac.util.Context;
-import com.sun.tools.javac.code.Types;
-import com.sun.tools.javac.code.Symtab;
-import com.sun.tools.javac.code.Type;
-import com.sun.tools.javac.code.Type.*;
-import com.sun.tools.javac.code.Symbol.*;
-import com.sun.tools.javac.comp.Check;
-import com.sun.tools.javac.util.List;
-import com.sun.tools.javac.util.ListBuffer;
-import com.sun.tools.javac.util.Name;
-import com.sun.tools.javac.util.Names;
-import com.sun.tools.javac.file.JavacFileManager;
-
-/**
- * Test harness whose goal is to simplify the task of writing type-system
- * regression test. It provides functionalities to build custom types as well
- * as to access the underlying javac's symbol table in order to retrieve
- * predefined types. Among the features supported by the harness are: type
- * substitution, type containment, subtyping, cast-conversion, assigment
- * conversion.
- *
- * This class is meant to be a common super class for all concrete type test
- * classes. A subclass can access the type-factory and the test methods so as
- * to write compact tests. An example is reported below:
- *
- * <pre>
- * Type X = fac.TypeVariable();
- * Type Y = fac.TypeVariable();
- * Type A_X_Y = fac.Class(0, X, Y);
- * Type A_Obj_Obj = fac.Class(0,
- * predef.objectType,
- * predef.objectType);
- * checkSameType(A_Obj_Obj, subst(A_X_Y,
- * Mapping(X, predef.objectType),
- * Mapping(Y, predef.objectType)));
- * </pre>
- *
- * The above code is used to create two class types, namely {@code A<X,Y>} and
- * {@code A<Object,Object>} where both {@code X} and {@code Y} are type-variables.
- * The code then verifies that {@code [X:=Object,Y:=Object]A<X,Y> == A<Object,Object>}.
- *
- * @author mcimadamore
- */
-public class TypeHarness {
-
- protected Types types;
- protected Check chk;
- protected Symtab predef;
- protected Names names;
- protected Factory fac;
-
- protected TypeHarness() {
- Context ctx = new Context();
- JavacFileManager.preRegister(ctx);
- types = Types.instance(ctx);
- chk = Check.instance(ctx);
- predef = Symtab.instance(ctx);
- names = Names.instance(ctx);
- fac = new Factory();
- }
-
- // <editor-fold defaultstate="collapsed" desc="type assertions">
-
- /** assert that 's' is a subtype of 't' */
- public void assertSubtype(Type s, Type t) {
- assertSubtype(s, t, true);
- }
-
- /** assert that 's' is/is not a subtype of 't' */
- public void assertSubtype(Type s, Type t, boolean expected) {
- if (types.isSubtype(s, t) != expected) {
- String msg = expected ?
- " is not a subtype of " :
- " is a subtype of ";
- error(s + msg + t);
- }
- }
-
- /** assert that 's' is the same type as 't' */
- public void assertSameType(Type s, Type t) {
- assertSameType(s, t, true);
- }
-
- /** assert that 's' is/is not the same type as 't' */
- public void assertSameType(Type s, Type t, boolean expected) {
- if (types.isSameType(s, t) != expected) {
- String msg = expected ?
- " is not the same type as " :
- " is the same type as ";
- error(s + msg + t);
- }
- }
-
- /** assert that 's' is castable to 't' */
- public void assertCastable(Type s, Type t) {
- assertCastable(s, t, true);
- }
-
- /** assert that 's' is/is not castable to 't' */
- public void assertCastable(Type s, Type t, boolean expected) {
- if (types.isCastable(s, t) != expected) {
- String msg = expected ?
- " is not castable to " :
- " is castable to ";
- error(s + msg + t);
- }
- }
-
- /** assert that 's' is convertible (method invocation conversion) to 't' */
- public void assertConvertible(Type s, Type t) {
- assertCastable(s, t, true);
- }
-
- /** assert that 's' is/is not convertible (method invocation conversion) to 't' */
- public void assertConvertible(Type s, Type t, boolean expected) {
- if (types.isConvertible(s, t) != expected) {
- String msg = expected ?
- " is not convertible to " :
- " is convertible to ";
- error(s + msg + t);
- }
- }
-
- /** assert that 's' is assignable to 't' */
- public void assertAssignable(Type s, Type t) {
- assertCastable(s, t, true);
- }
-
- /** assert that 's' is/is not assignable to 't' */
- public void assertAssignable(Type s, Type t, boolean expected) {
- if (types.isAssignable(s, t) != expected) {
- String msg = expected ?
- " is not assignable to " :
- " is assignable to ";
- error(s + msg + t);
- }
- }
-
- /** assert that generic type 't' is well-formed */
- public void assertValidGenericType(Type t) {
- assertValidGenericType(t, true);
- }
-
- /** assert that 's' is/is not assignable to 't' */
- public void assertValidGenericType(Type t, boolean expected) {
- if (chk.checkValidGenericType(t) != expected) {
- String msg = expected ?
- " is not a valid generic type" :
- " is a valid generic type";
- error(t + msg + " " + t.tsym.type);
- }
- }
- // </editor-fold>
-
- private void error(String msg) {
- throw new AssertionError("Unexpected result: " + msg);
- }
-
- // <editor-fold defaultstate="collapsed" desc="type functions">
-
- /** compute the erasure of a type 't' */
- public Type erasure(Type t) {
- return types.erasure(t);
- }
-
- /** compute the capture of a type 't' */
- public Type capture(Type t) {
- return types.capture(t);
- }
-
- /** compute the boxed type associated with 't' */
- public Type box(Type t) {
- if (!t.isPrimitive()) {
- throw new AssertionError("Cannot box non-primitive type: " + t);
- }
- return types.boxedClass(t).type;
- }
-
- /** compute the unboxed type associated with 't' */
- public Type unbox(Type t) {
- Type u = types.unboxedType(t);
- if (t == null) {
- throw new AssertionError("Cannot unbox reference type: " + t);
- } else {
- return u;
- }
- }
-
- /** compute a type substitution on 't' given a list of type mappings */
- public Type subst(Type t, Mapping... maps) {
- ListBuffer<Type> from = new ListBuffer<>();
- ListBuffer<Type> to = new ListBuffer<>();
- for (Mapping tm : maps) {
- from.append(tm.from);
- to.append(tm.to);
- }
- return types.subst(t, from.toList(), to.toList());
- }
-
- /** create a fresh type mapping from a type to another */
- public Mapping Mapping(Type from, Type to) {
- return new Mapping(from, to);
- }
-
- public static class Mapping {
- Type from;
- Type to;
- private Mapping(Type from, Type to) {
- this.from = from;
- this.to = to;
- }
- }
- // </editor-fold>
-
- // <editor-fold defaultstate="collapsed" desc="type factory">
-
- /**
- * This class is used to create Java types in a simple way. All main
- * kinds of type are supported: primitive, reference, non-denotable. The
- * factory also supports creation of constant types (used by the compiler
- * to represent the type of a literal).
- */
- public class Factory {
-
- private int synthNameCount = 0;
-
- private Name syntheticName() {
- return names.fromString("A$" + synthNameCount++);
- }
-
- public ClassType Class(long flags, Type... typeArgs) {
- ClassSymbol csym = new ClassSymbol(flags, syntheticName(), predef.noSymbol);
- csym.type = new ClassType(Type.noType, List.from(typeArgs), csym);
- ((ClassType)csym.type).supertype_field = predef.objectType;
- return (ClassType)csym.type;
- }
-
- public ClassType Class(Type... typeArgs) {
- return Class(0, typeArgs);
- }
-
- public ClassType Interface(Type... typeArgs) {
- return Class(Flags.INTERFACE, typeArgs);
- }
-
- public ClassType Interface(long flags, Type... typeArgs) {
- return Class(Flags.INTERFACE | flags, typeArgs);
- }
-
- public Type Constant(byte b) {
- return predef.byteType.constType(b);
- }
-
- public Type Constant(short s) {
- return predef.shortType.constType(s);
- }
-
- public Type Constant(int i) {
- return predef.intType.constType(i);
- }
-
- public Type Constant(long l) {
- return predef.longType.constType(l);
- }
-
- public Type Constant(float f) {
- return predef.floatType.constType(f);
- }
-
- public Type Constant(double d) {
- return predef.doubleType.constType(d);
- }
-
- public Type Constant(char c) {
- return predef.charType.constType(c + 0);
- }
-
- public ArrayType Array(Type elemType) {
- return new ArrayType(elemType, predef.arrayClass);
- }
-
- public TypeVar TypeVariable() {
- return TypeVariable(predef.objectType);
- }
-
- public TypeVar TypeVariable(Type bound) {
- TypeSymbol tvsym = new TypeVariableSymbol(0, syntheticName(), null, predef.noSymbol);
- tvsym.type = new TypeVar(tvsym, bound, null);
- return (TypeVar)tvsym.type;
- }
-
- public WildcardType Wildcard(BoundKind bk, Type bound) {
- return new WildcardType(bound, bk, predef.boundClass);
- }
-
- public CapturedType CapturedVariable(Type upper, Type lower) {
- return new CapturedType(syntheticName(), predef.noSymbol, upper, lower, null);
- }
-
- public ClassType Intersection(Type classBound, Type... intfBounds) {
- ClassType ct = Class(Flags.COMPOUND);
- ct.supertype_field = classBound;
- ct.interfaces_field = List.from(intfBounds);
- return ct;
- }
- }
- // </editor-fold>
-}