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16 package com.google.gwt.user.rebind;
17
18 import com.google.gwt.core.ext.GeneratorContext;
19 import com.google.gwt.core.ext.TreeLogger;
20 import com.google.gwt.user.rebind.ClassSourceFileComposerFactory.JavaSourceCategory;
21
22 import java.io.PrintWriter  ;
23
24 class ClassSourceFileComposer implements SourceWriter {
25
26
29 private static final String STAR_COMMENT_LINE = " * ";
30
31 private boolean atStart;
32
33
37 private String commentIndicator;
38
39 private final GeneratorContext ctx;
40
41
44 private boolean inComment;
45
46 private int indent;
47
48 private final PrintWriter printWriter;
49
50 ClassSourceFileComposer(GeneratorContext ctx, PrintWriter printWriter,
51 String targetPackageName, String targetClassShortName,
52 String superClassName, String [] interfaceNames, String [] imports,
53 JavaSourceCategory category, String classJavaDocComment) {
54 this.ctx = ctx;
55 this.printWriter = printWriter;
56 if (targetPackageName == null) {
57 throw new IllegalArgumentException ("Cannot supply a null package name to"
58 + targetClassShortName);
59 }
60 println("package " + targetPackageName + ";");
62 println();
63 if (imports != null && imports.length > 0) {
64 for (int i = 0, n = imports.length; i < n; ++i) {
65 println("import " + imports[i] + ";");
66 }
67 println();
68 }
69 if (classJavaDocComment != null) {
70 beginJavaDocComment();
71 print(classJavaDocComment);
72 endJavaDocComment();
73 }
74 if (category == JavaSourceCategory.CLASS) {
75 emitClassDecl(targetClassShortName, superClassName, interfaceNames);
76 } else {
77 emitInterfaceDecl(targetClassShortName, superClassName, interfaceNames);
78 }
79 println(" {");
80 indent();
81 }
82
83
86 public void beginJavaDocComment() {
87 println("\n/**");
88 inComment = true;
89 commentIndicator = STAR_COMMENT_LINE;
90 }
91
92 public void commit(TreeLogger logger) {
93 outdent();
94 println("}");
95 printWriter.close();
96 if (ctx != null) {
98 ctx.commit(logger, printWriter);
99 }
100 }
101
102
105 public void endJavaDocComment() {
106 inComment = false;
107 println("\n */");
108 }
109
110 public void indent() {
111 ++indent;
112 }
113
114 public void indentln(String s) {
115 indent();
116 println(s);
117 outdent();
118 }
119
120 public void outdent() {
121 --indent;
122 }
123
124 public void print(String s) {
125 if (atStart) {
128 for (int j = 0; j < indent; ++j) {
129 printWriter.print(" ");
130 }
131 if (inComment) {
132 printWriter.print(commentIndicator);
133 }
134 atStart = false;
135 }
136 String rest = null;
139 int i = s.indexOf("\n");
140 if (i > -1 && i < s.length() - 1) {
141 rest = s.substring(i + 1);
142 s = s.substring(0, i + 1);
143 }
144 printWriter.print(s);
145 if (rest != null) {
148 atStart = true;
149 print(rest);
150 }
151 }
152
153 public void println() {
154 print("\n");
155 atStart = true;
156 }
157
158 public void println(String s) {
159 print(s + "\n");
160 atStart = true;
161 }
162
163 private void emitClassDecl(String targetClassShortName,
164 String superClassName, String [] interfaceNames) {
165 print("public class " + targetClassShortName);
166 if (superClassName != null) {
167 print(" extends " + superClassName);
168 }
169 if (interfaceNames != null && interfaceNames.length > 0) {
170 print(" implements ");
171 for (int i = 0, n = interfaceNames.length; i < n; ++i) {
172 if (i > 0) {
173 print(", ");
174 }
175 print(interfaceNames[i]);
176 }
177 }
178 }
179
180 private void emitInterfaceDecl(String targetClassShortName,
181 String superClassName, String [] interfaceNames) {
182 if (superClassName != null) {
183 throw new IllegalArgumentException ("Cannot set superclass name "
184 + superClassName + " on a interface.");
185 }
186 print("public interface " + targetClassShortName);
187 if (interfaceNames != null && interfaceNames.length > 0) {
188 print(" extends ");
189 for (int i = 0; i < interfaceNames.length; ++i) {
190 if (i > 0) {
191 print(", ");
192 }
193 print(interfaceNames[i]);
194 }
195 }
196 }
197 }
198 |
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