langtools/src/jdk.javadoc/share/classes/com/sun/tools/javadoc/main/TypeMaker.java
changeset 37938 42baa89d2156
parent 32800 8457813125e3
child 38617 d93a7f64e231
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/jdk.javadoc/share/classes/com/sun/tools/javadoc/main/TypeMaker.java	Mon May 09 16:52:15 2016 -0700
@@ -0,0 +1,350 @@
+/*
+ * Copyright (c) 1997, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package com.sun.tools.javadoc.main;
+
+import com.sun.javadoc.*;
+import com.sun.tools.javac.code.Symbol;
+import com.sun.tools.javac.code.Symbol.ClassSymbol;
+import com.sun.tools.javac.code.Symbol.CompletionFailure;
+import com.sun.tools.javac.code.Type;
+import com.sun.tools.javac.code.Type.ArrayType;
+import com.sun.tools.javac.code.Type.ClassType;
+import com.sun.tools.javac.code.Type.TypeVar;
+import com.sun.tools.javac.util.List;
+import static com.sun.tools.javac.code.TypeTag.ARRAY;
+
+/**
+ *  <p><b>This is NOT part of any supported API.
+ *  If you write code that depends on this, you do so at your own risk.
+ *  This code and its internal interfaces are subject to change or
+ *  deletion without notice.</b>
+ */
+public class TypeMaker {
+
+    public static com.sun.javadoc.Type getType(DocEnv env, Type t) {
+        return getType(env, t, true);
+    }
+
+    /**
+     * @param errToClassDoc  if true, ERROR type results in a ClassDoc;
+     *          false preserves legacy behavior
+     */
+    public static com.sun.javadoc.Type getType(DocEnv env, Type t,
+            boolean errorToClassDoc) {
+        return getType(env, t, errorToClassDoc, true);
+    }
+
+    public static com.sun.javadoc.Type getType(DocEnv env, Type t,
+            boolean errToClassDoc, boolean considerAnnotations) {
+        try {
+            return getTypeImpl(env, t, errToClassDoc, considerAnnotations);
+        } catch (CompletionFailure cf) {
+            /* Quietly ignore completion failures and try again - the type
+             * for which the CompletionFailure was thrown shouldn't be completed
+             * again by the completer that threw the CompletionFailure.
+             */
+            return getType(env, t, errToClassDoc, considerAnnotations);
+        }
+    }
+
+    @SuppressWarnings("fallthrough")
+    private static com.sun.javadoc.Type getTypeImpl(DocEnv env, Type t,
+            boolean errToClassDoc, boolean considerAnnotations) {
+        if (env.legacyDoclet) {
+            t = env.types.erasure(t);
+        }
+
+        if (considerAnnotations && t.isAnnotated()) {
+            return new AnnotatedTypeImpl(env, t);
+        }
+
+        switch (t.getTag()) {
+        case CLASS:
+            if (ClassDocImpl.isGeneric((ClassSymbol)t.tsym)) {
+                return env.getParameterizedType((ClassType)t);
+            } else {
+                return env.getClassDoc((ClassSymbol)t.tsym);
+            }
+        case WILDCARD:
+            Type.WildcardType a = (Type.WildcardType)t;
+            return new WildcardTypeImpl(env, a);
+        case TYPEVAR: return new TypeVariableImpl(env, (TypeVar)t);
+        case ARRAY: return new ArrayTypeImpl(env, t);
+        case BYTE: return PrimitiveType.byteType;
+        case CHAR: return PrimitiveType.charType;
+        case SHORT: return PrimitiveType.shortType;
+        case INT: return PrimitiveType.intType;
+        case LONG: return PrimitiveType.longType;
+        case FLOAT: return PrimitiveType.floatType;
+        case DOUBLE: return PrimitiveType.doubleType;
+        case BOOLEAN: return PrimitiveType.booleanType;
+        case VOID: return PrimitiveType.voidType;
+        case ERROR:
+            if (errToClassDoc)
+                return env.getClassDoc((ClassSymbol)t.tsym);
+            // FALLTHRU
+        default:
+            return new PrimitiveType(t.tsym.getQualifiedName().toString());
+        }
+    }
+
+    /**
+     * Convert a list of javac types into an array of javadoc types.
+     */
+    public static com.sun.javadoc.Type[] getTypes(DocEnv env, List<Type> ts) {
+        return getTypes(env, ts, new com.sun.javadoc.Type[ts.length()]);
+    }
+
+    /**
+     * Like the above version, but use and return the array given.
+     */
+    public static com.sun.javadoc.Type[] getTypes(DocEnv env, List<Type> ts,
+                                                  com.sun.javadoc.Type res[]) {
+        int i = 0;
+        for (Type t : ts) {
+            res[i++] = getType(env, t);
+        }
+        return res;
+    }
+
+    public static String getTypeName(Type t, boolean full) {
+        switch (t.getTag()) {
+        case ARRAY:
+            StringBuilder s = new StringBuilder();
+            while (t.hasTag(ARRAY)) {
+                s.append("[]");
+                t = ((ArrayType)t).elemtype;
+            }
+            s.insert(0, getTypeName(t, full));
+            return s.toString();
+        case CLASS:
+            return ClassDocImpl.getClassName((ClassSymbol)t.tsym, full);
+        default:
+            return t.tsym.getQualifiedName().toString();
+        }
+    }
+
+    /**
+     * Return the string representation of a type use.  Bounds of type
+     * variables are not included; bounds of wildcard types are.
+     * Class names are qualified if "full" is true.
+     */
+    static String getTypeString(DocEnv env, Type t, boolean full) {
+        // TODO: should annotations be included here?
+        switch (t.getTag()) {
+        case ARRAY:
+            StringBuilder s = new StringBuilder();
+            while (t.hasTag(ARRAY)) {
+                s.append("[]");
+                t = env.types.elemtype(t);
+            }
+            s.insert(0, getTypeString(env, t, full));
+            return s.toString();
+        case CLASS:
+            return ParameterizedTypeImpl.
+                        parameterizedTypeToString(env, (ClassType)t, full);
+        case WILDCARD:
+            Type.WildcardType a = (Type.WildcardType)t;
+            return WildcardTypeImpl.wildcardTypeToString(env, a, full);
+        default:
+            return t.tsym.getQualifiedName().toString();
+        }
+    }
+
+    /**
+     * Return the formal type parameters of a class or method as an
+     * angle-bracketed string.  Each parameter is a type variable with
+     * optional bounds.  Class names are qualified if "full" is true.
+     * Return "" if there are no type parameters or we're hiding generics.
+     */
+    static String typeParametersString(DocEnv env, Symbol sym, boolean full) {
+        if (env.legacyDoclet || sym.type.getTypeArguments().isEmpty()) {
+            return "";
+        }
+        StringBuilder s = new StringBuilder();
+        for (Type t : sym.type.getTypeArguments()) {
+            s.append(s.length() == 0 ? "<" : ", ");
+            s.append(TypeVariableImpl.typeVarToString(env, (TypeVar)t, full));
+        }
+        s.append(">");
+        return s.toString();
+    }
+
+    /**
+     * Return the actual type arguments of a parameterized type as an
+     * angle-bracketed string.  Class name are qualified if "full" is true.
+     * Return "" if there are no type arguments or we're hiding generics.
+     */
+    static String typeArgumentsString(DocEnv env, ClassType cl, boolean full) {
+        if (env.legacyDoclet || cl.getTypeArguments().isEmpty()) {
+            return "";
+        }
+        StringBuilder s = new StringBuilder();
+        for (Type t : cl.getTypeArguments()) {
+            s.append(s.length() == 0 ? "<" : ", ");
+            s.append(getTypeString(env, t, full));
+        }
+        s.append(">");
+        return s.toString();
+    }
+
+
+    private static class ArrayTypeImpl implements com.sun.javadoc.Type {
+
+        Type arrayType;
+
+        DocEnv env;
+
+        ArrayTypeImpl(DocEnv env, Type arrayType) {
+            this.env = env;
+            this.arrayType = arrayType;
+        }
+
+        private com.sun.javadoc.Type skipArraysCache = null;
+
+        public com.sun.javadoc.Type getElementType() {
+            return TypeMaker.getType(env, env.types.elemtype(arrayType));
+        }
+
+        private com.sun.javadoc.Type skipArrays() {
+            if (skipArraysCache == null) {
+                Type t;
+                for (t = arrayType; t.hasTag(ARRAY); t = env.types.elemtype(t)) { }
+                skipArraysCache = TypeMaker.getType(env, t);
+            }
+            return skipArraysCache;
+        }
+
+        /**
+         * Return the type's dimension information, as a string.
+         * <p>
+         * For example, a two dimensional array of String returns '[][]'.
+         */
+        public String dimension() {
+            StringBuilder dimension = new StringBuilder();
+            for (Type t = arrayType; t.hasTag(ARRAY); t = env.types.elemtype(t)) {
+                dimension.append("[]");
+            }
+            return dimension.toString();
+        }
+
+        /**
+         * Return unqualified name of type excluding any dimension information.
+         * <p>
+         * For example, a two dimensional array of String returns 'String'.
+         */
+        public String typeName() {
+            return skipArrays().typeName();
+        }
+
+        /**
+         * Return qualified name of type excluding any dimension information.
+         *<p>
+         * For example, a two dimensional array of String
+         * returns 'java.lang.String'.
+         */
+        public String qualifiedTypeName() {
+            return skipArrays().qualifiedTypeName();
+        }
+
+        /**
+         * Return the simple name of this type excluding any dimension information.
+         */
+        public String simpleTypeName() {
+            return skipArrays().simpleTypeName();
+        }
+
+        /**
+         * Return this type as a class.  Array dimensions are ignored.
+         *
+         * @return a ClassDocImpl if the type is a Class.
+         * Return null if it is a primitive type..
+         */
+        public ClassDoc asClassDoc() {
+            return skipArrays().asClassDoc();
+        }
+
+        /**
+         * Return this type as a <code>ParameterizedType</code> if it
+         * represents a parameterized type.  Array dimensions are ignored.
+         */
+        public ParameterizedType asParameterizedType() {
+            return skipArrays().asParameterizedType();
+        }
+
+        /**
+         * Return this type as a <code>TypeVariable</code> if it represents
+         * a type variable.  Array dimensions are ignored.
+         */
+        public TypeVariable asTypeVariable() {
+            return skipArrays().asTypeVariable();
+        }
+
+        /**
+         * Return null, as there are no arrays of wildcard types.
+         */
+        public WildcardType asWildcardType() {
+            return null;
+        }
+
+        /**
+         * Return null, as there are no annotations of the type
+         */
+        public AnnotatedType asAnnotatedType() {
+            return null;
+        }
+
+        /**
+         * Return this type as an <code>AnnotationTypeDoc</code> if it
+         * represents an annotation type.  Array dimensions are ignored.
+         */
+        public AnnotationTypeDoc asAnnotationTypeDoc() {
+            return skipArrays().asAnnotationTypeDoc();
+        }
+
+        /**
+         * Return true if this is an array of a primitive type.
+         */
+        public boolean isPrimitive() {
+            return skipArrays().isPrimitive();
+        }
+
+        /**
+         * Return a string representation of the type.
+         *
+         * Return name of type including any dimension information.
+         * <p>
+         * For example, a two dimensional array of String returns
+         * <code>String[][]</code>.
+         *
+         * @return name of type including any dimension information.
+         */
+        @Override
+        public String toString() {
+            return qualifiedTypeName() + dimension();
+        }
+    }
+}