src/share/classes/com/sun/tools/javadoc/FieldDocImpl.java

Tue, 09 Oct 2012 19:10:00 -0700

author
jjg
date
Tue, 09 Oct 2012 19:10:00 -0700
changeset 1357
c75be5bc5283
parent 1326
30c36e23f154
child 1359
25e14ad23cef
permissions
-rw-r--r--

8000663: clean up langtools imports
Reviewed-by: darcy

duke@1 1 /*
jjg@1326 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
duke@1 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1 4 *
duke@1 5 * This code is free software; you can redistribute it and/or modify it
duke@1 6 * under the terms of the GNU General Public License version 2 only, as
ohair@554 7 * published by the Free Software Foundation. Oracle designates this
duke@1 8 * particular file as subject to the "Classpath" exception as provided
ohair@554 9 * by Oracle in the LICENSE file that accompanied this code.
duke@1 10 *
duke@1 11 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@1 14 * version 2 for more details (a copy is included in the LICENSE file that
duke@1 15 * accompanied this code).
duke@1 16 *
duke@1 17 * You should have received a copy of the GNU General Public License version
duke@1 18 * 2 along with this work; if not, write to the Free Software Foundation,
duke@1 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1 20 *
ohair@554 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554 22 * or visit www.oracle.com if you need additional information or have any
ohair@554 23 * questions.
duke@1 24 */
duke@1 25
duke@1 26 package com.sun.tools.javadoc;
duke@1 27
jjg@197 28 import java.lang.reflect.Modifier;
jjg@197 29
duke@1 30 import com.sun.javadoc.*;
duke@1 31
duke@1 32 import com.sun.tools.javac.code.Flags;
duke@1 33 import com.sun.tools.javac.code.Symbol.ClassSymbol;
duke@1 34 import com.sun.tools.javac.code.Symbol.VarSymbol;
duke@1 35 import com.sun.tools.javac.code.TypeTags;
duke@1 36
duke@1 37 import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
duke@1 38
duke@1 39 import com.sun.tools.javac.util.Position;
duke@1 40
duke@1 41 /**
duke@1 42 * Represents a field in a java class.
duke@1 43 *
duke@1 44 * @see MemberDocImpl
duke@1 45 *
duke@1 46 * @since 1.2
duke@1 47 * @author Robert Field
duke@1 48 * @author Neal Gafter (rewrite)
duke@1 49 * @author Scott Seligman (generics, enums, annotations)
duke@1 50 */
duke@1 51 public class FieldDocImpl extends MemberDocImpl implements FieldDoc {
duke@1 52
duke@1 53 protected final VarSymbol sym;
duke@1 54
duke@1 55 /**
duke@1 56 * Constructor.
duke@1 57 */
duke@1 58 public FieldDocImpl(DocEnv env, VarSymbol sym,
duke@1 59 String rawDocs, JCVariableDecl tree, Position.LineMap lineMap) {
duke@1 60 super(env, sym, rawDocs, tree, lineMap);
duke@1 61 this.sym = sym;
duke@1 62 }
duke@1 63
duke@1 64 /**
duke@1 65 * Constructor.
duke@1 66 */
duke@1 67 public FieldDocImpl(DocEnv env, VarSymbol sym) {
duke@1 68 this(env, sym, null, null, null);
duke@1 69 }
duke@1 70
duke@1 71 /**
duke@1 72 * Returns the flags in terms of javac's flags
duke@1 73 */
duke@1 74 protected long getFlags() {
duke@1 75 return sym.flags();
duke@1 76 }
duke@1 77
duke@1 78 /**
duke@1 79 * Identify the containing class
duke@1 80 */
duke@1 81 protected ClassSymbol getContainingClass() {
duke@1 82 return sym.enclClass();
duke@1 83 }
duke@1 84
duke@1 85 /**
duke@1 86 * Get type of this field.
duke@1 87 */
duke@1 88 public com.sun.javadoc.Type type() {
duke@1 89 return TypeMaker.getType(env, sym.type, false);
duke@1 90 }
duke@1 91
duke@1 92 /**
duke@1 93 * Get the value of a constant field.
duke@1 94 *
duke@1 95 * @return the value of a constant field. The value is
duke@1 96 * automatically wrapped in an object if it has a primitive type.
duke@1 97 * If the field is not constant, returns null.
duke@1 98 */
duke@1 99 public Object constantValue() {
duke@1 100 Object result = sym.getConstValue();
duke@1 101 if (result != null && sym.type.tag == TypeTags.BOOLEAN)
duke@1 102 // javac represents false and true as Integers 0 and 1
duke@1 103 result = Boolean.valueOf(((Integer)result).intValue() != 0);
duke@1 104 return result;
duke@1 105 }
duke@1 106
duke@1 107 /**
duke@1 108 * Get the value of a constant field.
duke@1 109 *
duke@1 110 * @return the text of a Java language expression whose value
duke@1 111 * is the value of the constant. The expression uses no identifiers
duke@1 112 * other than primitive literals. If the field is
duke@1 113 * not constant, returns null.
duke@1 114 */
duke@1 115 public String constantValueExpression() {
duke@1 116 return constantValueExpression(constantValue());
duke@1 117 }
duke@1 118
duke@1 119 /**
duke@1 120 * A static version of the above.
duke@1 121 */
duke@1 122 static String constantValueExpression(Object cb) {
duke@1 123 if (cb == null) return null;
duke@1 124 if (cb instanceof Character) return sourceForm(((Character)cb).charValue());
duke@1 125 if (cb instanceof Byte) return sourceForm(((Byte)cb).byteValue());
duke@1 126 if (cb instanceof String) return sourceForm((String)cb);
duke@1 127 if (cb instanceof Double) return sourceForm(((Double)cb).doubleValue(), 'd');
duke@1 128 if (cb instanceof Float) return sourceForm(((Float)cb).doubleValue(), 'f');
duke@1 129 if (cb instanceof Long) return cb + "L";
duke@1 130 return cb.toString(); // covers int, short
duke@1 131 }
duke@1 132 // where
duke@1 133 private static String sourceForm(double v, char suffix) {
duke@1 134 if (Double.isNaN(v))
duke@1 135 return "0" + suffix + "/0" + suffix;
duke@1 136 if (v == Double.POSITIVE_INFINITY)
duke@1 137 return "1" + suffix + "/0" + suffix;
duke@1 138 if (v == Double.NEGATIVE_INFINITY)
duke@1 139 return "-1" + suffix + "/0" + suffix;
duke@1 140 return v + (suffix == 'f' || suffix == 'F' ? "" + suffix : "");
duke@1 141 }
duke@1 142 private static String sourceForm(char c) {
jjg@910 143 StringBuilder buf = new StringBuilder(8);
duke@1 144 buf.append('\'');
duke@1 145 sourceChar(c, buf);
duke@1 146 buf.append('\'');
duke@1 147 return buf.toString();
duke@1 148 }
duke@1 149 private static String sourceForm(byte c) {
duke@1 150 return "0x" + Integer.toString(c & 0xff, 16);
duke@1 151 }
duke@1 152 private static String sourceForm(String s) {
jjg@910 153 StringBuilder buf = new StringBuilder(s.length() + 5);
duke@1 154 buf.append('\"');
duke@1 155 for (int i=0; i<s.length(); i++) {
duke@1 156 char c = s.charAt(i);
duke@1 157 sourceChar(c, buf);
duke@1 158 }
duke@1 159 buf.append('\"');
duke@1 160 return buf.toString();
duke@1 161 }
jjg@910 162 private static void sourceChar(char c, StringBuilder buf) {
duke@1 163 switch (c) {
duke@1 164 case '\b': buf.append("\\b"); return;
duke@1 165 case '\t': buf.append("\\t"); return;
duke@1 166 case '\n': buf.append("\\n"); return;
duke@1 167 case '\f': buf.append("\\f"); return;
duke@1 168 case '\r': buf.append("\\r"); return;
duke@1 169 case '\"': buf.append("\\\""); return;
duke@1 170 case '\'': buf.append("\\\'"); return;
duke@1 171 case '\\': buf.append("\\\\"); return;
duke@1 172 default:
duke@1 173 if (isPrintableAscii(c)) {
duke@1 174 buf.append(c); return;
duke@1 175 }
duke@1 176 unicodeEscape(c, buf);
duke@1 177 return;
duke@1 178 }
duke@1 179 }
jjg@910 180 private static void unicodeEscape(char c, StringBuilder buf) {
duke@1 181 final String chars = "0123456789abcdef";
duke@1 182 buf.append("\\u");
duke@1 183 buf.append(chars.charAt(15 & (c>>12)));
duke@1 184 buf.append(chars.charAt(15 & (c>>8)));
duke@1 185 buf.append(chars.charAt(15 & (c>>4)));
duke@1 186 buf.append(chars.charAt(15 & (c>>0)));
duke@1 187 }
duke@1 188 private static boolean isPrintableAscii(char c) {
duke@1 189 return c >= ' ' && c <= '~';
duke@1 190 }
duke@1 191
duke@1 192 /**
duke@1 193 * Return true if this field is included in the active set.
duke@1 194 */
duke@1 195 public boolean isIncluded() {
duke@1 196 return containingClass().isIncluded() && env.shouldDocument(sym);
duke@1 197 }
duke@1 198
duke@1 199 /**
duke@1 200 * Is this Doc item a field (but not an enum constant?
duke@1 201 */
jjg@910 202 @Override
duke@1 203 public boolean isField() {
duke@1 204 return !isEnumConstant();
duke@1 205 }
duke@1 206
duke@1 207 /**
duke@1 208 * Is this Doc item an enum constant?
duke@1 209 * (For legacy doclets, return false.)
duke@1 210 */
jjg@910 211 @Override
duke@1 212 public boolean isEnumConstant() {
duke@1 213 return (getFlags() & Flags.ENUM) != 0 &&
duke@1 214 !env.legacyDoclet;
duke@1 215 }
duke@1 216
duke@1 217 /**
duke@1 218 * Return true if this field is transient
duke@1 219 */
duke@1 220 public boolean isTransient() {
duke@1 221 return Modifier.isTransient(getModifiers());
duke@1 222 }
duke@1 223
duke@1 224 /**
duke@1 225 * Return true if this field is volatile
duke@1 226 */
duke@1 227 public boolean isVolatile() {
duke@1 228 return Modifier.isVolatile(getModifiers());
duke@1 229 }
duke@1 230
duke@1 231 /**
duke@1 232 * Returns true if this field was synthesized by the compiler.
duke@1 233 */
duke@1 234 public boolean isSynthetic() {
duke@1 235 return (getFlags() & Flags.SYNTHETIC) != 0;
duke@1 236 }
duke@1 237
duke@1 238 /**
duke@1 239 * Return the serialField tags in this FieldDocImpl item.
duke@1 240 *
duke@1 241 * @return an array of <tt>SerialFieldTagImpl</tt> containing all
jjg@1326 242 * <code>&#64;serialField</code> tags.
duke@1 243 */
duke@1 244 public SerialFieldTag[] serialFieldTags() {
duke@1 245 return comment().serialFieldTags();
duke@1 246 }
duke@1 247
duke@1 248 public String name() {
duke@1 249 return sym.name.toString();
duke@1 250 }
duke@1 251
duke@1 252 public String qualifiedName() {
duke@1 253 return sym.enclClass().getQualifiedName() + "." + name();
duke@1 254 }
duke@1 255
duke@1 256 /**
duke@1 257 * Return the source position of the entity, or null if
duke@1 258 * no position is available.
duke@1 259 */
jjg@910 260 @Override
duke@1 261 public SourcePosition position() {
duke@1 262 if (sym.enclClass().sourcefile == null) return null;
jjg@197 263 return SourcePositionImpl.make(sym.enclClass().sourcefile,
duke@1 264 (tree==null) ? 0 : tree.pos,
duke@1 265 lineMap);
duke@1 266 }
duke@1 267 }

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