| /* gnu.classpath.tools.gjdoc.expr.IdentifierExpression |
| Copyright (C) 2004 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| package gnu.classpath.tools.gjdoc.expr; |
| |
| class IdentifierExpression |
| implements Expression |
| { |
| private String identifier; |
| |
| public IdentifierExpression(String identifier) |
| { |
| this.identifier = identifier; |
| } |
| |
| public ConstantExpression evaluate(Context context) |
| throws IllegalExpressionException |
| { |
| Object value = context.getEvaluatorEnvironment().getValue(identifier, context.getVisitedFields()); |
| |
| if (value instanceof Byte) { |
| return new ConstantByte(((Byte)value).byteValue()); |
| } |
| else if (value instanceof Short) { |
| return new ConstantShort(((Short)value).shortValue()); |
| } |
| else if (value instanceof Integer) { |
| return new ConstantInteger(((Integer)value).intValue()); |
| } |
| else if (value instanceof Long) { |
| return new ConstantLong(((Long)value).longValue()); |
| } |
| else if (value instanceof Float) { |
| return new ConstantFloat(((Float)value).floatValue()); |
| } |
| else if (value instanceof Double) { |
| return new ConstantDouble(((Double)value).doubleValue()); |
| } |
| else if (value instanceof Boolean) { |
| return new ConstantBoolean(((Boolean)value).booleanValue()); |
| } |
| else if (value instanceof Character) { |
| return new ConstantChar(((Character)value).charValue()); |
| } |
| else if (value instanceof String) { |
| return new ConstantString((String)value); |
| } |
| else if (null != value) { |
| throw new IllegalExpressionException("Unsupported type " + value.getClass().getName() + " for identifier " + identifier); |
| } |
| else { |
| throw new IllegalExpressionException("Cannot resolve identifier " + identifier); |
| } |
| } |
| } |