01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: *
17: * $Header:$
18: */
19: package org.apache.beehive.netui.compiler.grammar;
20:
21: import org.apache.beehive.netui.compiler.AnnotationGrammar;
22: import org.apache.beehive.netui.compiler.AnnotationMemberType;
23: import org.apache.beehive.netui.compiler.typesystem.declaration.AnnotationInstance;
24: import org.apache.beehive.netui.compiler.typesystem.declaration.AnnotationTypeElementDeclaration;
25: import org.apache.beehive.netui.compiler.typesystem.declaration.AnnotationValue;
26: import org.apache.beehive.netui.compiler.typesystem.declaration.MemberDeclaration;
27:
28: public class JavaIdentifierType extends AnnotationMemberType {
29: private char[] _validChars;
30:
31: public JavaIdentifierType(String requiredRuntimeVersion,
32: AnnotationGrammar parentGrammar, char[] validChars) {
33: super (requiredRuntimeVersion, parentGrammar);
34: _validChars = validChars;
35: }
36:
37: public Object onCheck(AnnotationTypeElementDeclaration valueDecl,
38: AnnotationValue value,
39: AnnotationInstance[] parentAnnotations,
40: MemberDeclaration classMember, int annotationArrayIndex) {
41: String val = (String) value.getValue();
42:
43: if (val.length() > 0) {
44: char firstChar = val.charAt(0);
45:
46: if (!Character.isJavaIdentifierStart(firstChar)) {
47: Object[] args = new Object[] { new Character(firstChar) };
48: addError(value, "error.invalid-java-identifier-start",
49: args);
50: }
51:
52: for (int i = 1; i < val.length(); i++) {
53: char c = val.charAt(i);
54:
55: if (!Character.isJavaIdentifierPart(val.charAt(i))
56: && !isValid(c)) {
57: Object[] args = new Object[] { new Character(c) };
58: addError(value,
59: "error.invalid-java-identifier-part", args);
60: }
61: }
62: }
63:
64: return null;
65: }
66:
67: private boolean isValid(char c) {
68: if (_validChars != null) {
69: for (int i = 0; i < _validChars.length; i++) {
70: if (c == _validChars[i])
71: return true;
72: }
73: }
74:
75: return false;
76: }
77: }
|