Source Code Cross Referenced for Import.java in  » Testing » KeY » de » uka » ilkd » key » java » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Testing » KeY » de.uka.ilkd.key.java 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // This file is part of KeY - Integrated Deductive Software Design
002:        // Copyright (C) 2001-2007 Universitaet Karlsruhe, Germany
003:        //                         Universitaet Koblenz-Landau, Germany
004:        //                         Chalmers University of Technology, Sweden
005:        //
006:        // The KeY system is protected by the GNU General Public License. 
007:        // See LICENSE.TXT for details.
008:        //
009:        //
010:
011:        package de.uka.ilkd.key.java;
012:
013:        import de.uka.ilkd.key.java.reference.*;
014:        import de.uka.ilkd.key.java.visitor.Visitor;
015:        import de.uka.ilkd.key.util.ExtList;
016:
017:        /**
018:         *  Import.
019:         * 
020:         */
021:        public class Import extends JavaNonTerminalProgramElement implements 
022:                TypeReferenceContainer, PackageReferenceContainer {
023:
024:            /**
025:             *        Multi import flag.
026:             */
027:
028:            protected final boolean isMultiImport;
029:
030:            /**
031:             *      Type reference infix.
032:             */
033:            protected final TypeReferenceInfix reference;
034:
035:            /**
036:             * children may contain: TypeReference (for import), a Comment
037:             * @param isMultiImport indicates whether the import contains multiple 
038:             * imports
039:             */
040:            public Import(ExtList children, boolean isMultiImport) {
041:                super (children);
042:                reference = (TypeReferenceInfix) children
043:                        .get(TypeReferenceInfix.class);
044:                this .isMultiImport = isMultiImport;
045:            }
046:
047:            /**
048:             *      Import.
049:             */
050:            public Import() {
051:                isMultiImport = false;
052:                reference = null;
053:            }
054:
055:            /**
056:             *      Import.
057:             *      @param t a type reference.
058:             *      @param multi indicates the wildcard.
059:             */
060:            public Import(TypeReference t, boolean multi) {
061:                reference = t;
062:                isMultiImport = multi;
063:            }
064:
065:            /**
066:             *      Import.
067:             *      @param t a package reference.
068:             */
069:
070:            public Import(PackageReference t) {
071:                reference = t;
072:                isMultiImport = true;
073:            }
074:
075:            public SourceElement getLastElement() {
076:                return reference;
077:            }
078:
079:            /**
080:             *        Checks if this import is a multi type import, also known as
081:             *        type-on-demand import.
082:             *        @return the kind of this import.
083:             */
084:
085:            public boolean isMultiImport() {
086:                return isMultiImport;
087:            }
088:
089:            /**
090:             *      Returns the number of children of this node.
091:             *      @return an int giving the number of children of this node
092:             */
093:            public int getChildCount() {
094:                int result = 0;
095:                if (reference != null)
096:                    result++;
097:                return result;
098:            }
099:
100:            /**
101:             *      Returns the child at the specified index in this node's "virtual"
102:             *      child array
103:             *      @param index an index into this node's "virtual" child array
104:             *      @return the program element at the given position
105:             *      @exception ArrayIndexOutOfBoundsException if <tt>index</tt> is out
106:             *                 of bounds
107:             */
108:            public ProgramElement getChildAt(int index) {
109:                if (reference != null) {
110:                    if (index == 0)
111:                        return reference;
112:                }
113:                throw new ArrayIndexOutOfBoundsException();
114:            }
115:
116:            /**
117:             *      Get the number of type references in this container.
118:             *      @return the number of type references.
119:             */
120:
121:            public int getTypeReferenceCount() {
122:                return (reference instanceof  TypeReference) ? 1 : 0;
123:            }
124:
125:            /*
126:              Return the type reference at the specified index in this node's
127:              "virtual" type reference array.
128:              @param index an index for a type reference.
129:              @return the type reference with the given index.
130:              @exception ArrayIndexOutOfBoundsException if <tt>index</tt> is out
131:              of bounds.
132:             */
133:
134:            public TypeReference getTypeReferenceAt(int index) {
135:                if (reference instanceof  TypeReference && index == 0) {
136:                    return (TypeReference) reference;
137:                }
138:                throw new ArrayIndexOutOfBoundsException();
139:            }
140:
141:            /**
142:             *        Returns the type reference of this import, if there is one.
143:             *        @return the reference of this import statement.
144:             */
145:
146:            public TypeReference getTypeReference() {
147:                return (reference instanceof  TypeReference) ? (TypeReference) reference
148:                        : null;
149:            }
150:
151:            /**
152:             *        Returns the package reference of this import, if there is one.
153:             *        @return the reference of this import statement.
154:             */
155:
156:            public PackageReference getPackageReference() {
157:                return (reference instanceof  PackageReference) ? (PackageReference) reference
158:                        : null;
159:            }
160:
161:            /**
162:             *        Returns the reference of this import, either a
163:             *        type or a package reference.
164:             *        @return the reference of this import statement.
165:             */
166:
167:            public TypeReferenceInfix getReference() {
168:                return reference;
169:            }
170:
171:            /** calls the corresponding method of a visitor in order to
172:             * perform some action/transformation on this element
173:             * @param v the Visitor
174:             */
175:            public void visit(Visitor v) {
176:                v.performActionOnImport(this );
177:            }
178:
179:            public void prettyPrint(PrettyPrinter p) throws java.io.IOException {
180:                p.printImport(this);
181:            }
182:        }
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