Mercurial > jdk8-mips64-public > langtools / file comparison

comparison: src/share/classes/com/sun/tools/javac/comp/Todo.java

src/share/classes/com/sun/tools/javac/comp/Todo.java

changeset 119
1e83972f53fb
parent 1
9a66ca7c79fa
child 174
fdfed22db054
equal deleted inserted replaced
115:829dea15ff99 119:1e83972f53fb
23 * have any questions. 23 * have any questions.
24 */ 24 */
25 25
26 package com.sun.tools.javac.comp; 26 package com.sun.tools.javac.comp;
27 27
28 import com.sun.tools.javac.util.*; 28 import java.util.AbstractQueue;
29 import com.sun.tools.javac.util.Context;
30 import java.util.HashMap;
31 import java.util.Iterator;
32 import java.util.LinkedList;
33 import java.util.Map;
34 import java.util.Queue;
35 import javax.tools.JavaFileObject;
29 36
30 /** A queue of all as yet unattributed classes. 37 /** A queue of all as yet unattributed classes.
31 * 38 *
32 * <p><b>This is NOT part of any API supported by Sun Microsystems. If 39 * <p><b>This is NOT part of any API supported by Sun Microsystems. If
33 * you write code that depends on this, you do so at your own risk. 40 * you write code that depends on this, you do so at your own risk.
34 * This code and its internal interfaces are subject to change or 41 * This code and its internal interfaces are subject to change or
35 * deletion without notice.</b> 42 * deletion without notice.</b>
36 */ 43 */
37 public class Todo extends ListBuffer<Env<AttrContext>> { 44 public class Todo extends AbstractQueue<Env<AttrContext>> {
38 /** The context key for the todo list. */ 45 /** The context key for the todo list. */
39 protected static final Context.Key<Todo> todoKey = 46 protected static final Context.Key<Todo> todoKey =
40 new Context.Key<Todo>(); 47 new Context.Key<Todo>();
41 48
42 /** Get the Todo instance for this context. */ 49 /** Get the Todo instance for this context. */
49 56
50 /** Create a new todo list. */ 57 /** Create a new todo list. */
51 protected Todo(Context context) { 58 protected Todo(Context context) {
52 context.put(todoKey, this); 59 context.put(todoKey, this);
53 } 60 }
61
62 public void append(Env<AttrContext> env) {
63 add(env);
64 }
65
66 @Override
67 public Iterator<Env<AttrContext>> iterator() {
68 return contents.iterator();
69 }
70
71 @Override
72 public int size() {
73 return contents.size();
74 }
75
76 public boolean offer(Env<AttrContext> e) {
77 if (contents.add(e)) {
78 if (contentsByFile != null)
79 addByFile(e);
80 return true;
81 } else {
82 return false;
83 }
84 }
85
86 public Env<AttrContext> poll() {
87 if (size() == 0)
88 return null;
89 Env<AttrContext> env = contents.remove(0);
90 if (contentsByFile != null)
91 removeByFile(env);
92 return env;
93 }
94
95 public Env<AttrContext> peek() {
96 return (size() == 0 ? null : contents.get(0));
97 }
98
99 public Queue<Queue<Env<AttrContext>>> groupByFile() {
100 if (contentsByFile == null) {
101 contentsByFile = new LinkedList<Queue<Env<AttrContext>>>();
102 for (Env<AttrContext> env: contents) {
103 addByFile(env);
104 }
105 }
106 return contentsByFile;
107 }
108
109 private void addByFile(Env<AttrContext> env) {
110 JavaFileObject file = env.toplevel.sourcefile;
111 if (fileMap == null)
112 fileMap = new HashMap<JavaFileObject, FileQueue>();
113 FileQueue fq = fileMap.get(file);
114 if (fq == null) {
115 fq = new FileQueue();
116 fileMap.put(file, fq);
117 contentsByFile.add(fq);
118 }
119 fq.fileContents.add(env);
120 }
121
122 private void removeByFile(Env<AttrContext> env) {
123 JavaFileObject file = env.toplevel.sourcefile;
124 FileQueue fq = fileMap.get(file);
125 if (fq == null)
126 return;
127 if (fq.fileContents.remove(env)) {
128 if (fq.isEmpty()) {
129 fileMap.remove(file);
130 contentsByFile.remove(fq);
131 }
132 }
133 }
134
135 LinkedList<Env<AttrContext>> contents = new LinkedList<Env<AttrContext>>();
136 LinkedList<Queue<Env<AttrContext>>> contentsByFile;
137 Map<JavaFileObject, FileQueue> fileMap;
138
139 class FileQueue extends AbstractQueue<Env<AttrContext>> {
140 @Override
141 public Iterator<Env<AttrContext>> iterator() {
142 return fileContents.iterator();
143 }
144
145 @Override
146 public int size() {
147 return fileContents.size();
148 }
149
150 public boolean offer(Env<AttrContext> e) {
151 if (fileContents.offer(e)) {
152 contents.add(e);
153 return true;
154 }
155 return false;
156 }
157
158 public Env<AttrContext> poll() {
159 if (fileContents.size() == 0)
160 return null;
161 Env<AttrContext> env = fileContents.remove(0);
162 contents.remove(env);
163 return env;
164 }
165
166 public Env<AttrContext> peek() {
167 return (fileContents.size() == 0 ? null : fileContents.get(0));
168 }
169
170 LinkedList<Env<AttrContext>> fileContents = new LinkedList<Env<AttrContext>>();
171 }
54 } 172 }

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