/jEdit/tags/jedit-4-2-pre4/bsh/BSHVariableDeclarator.java
Java | 95 lines | 28 code | 9 blank | 58 comment | 6 complexity | 300d7064617c45951346a5f32078f519 MD5 | raw file
Possible License(s): BSD-3-Clause, AGPL-1.0, Apache-2.0, LGPL-2.0, LGPL-3.0, GPL-2.0, CC-BY-SA-3.0, LGPL-2.1, GPL-3.0, MPL-2.0-no-copyleft-exception, IPL-1.0
- /*****************************************************************************
- * *
- * This file is part of the BeanShell Java Scripting distribution. *
- * Documentation and updates may be found at http://www.beanshell.org/ *
- * *
- * Sun Public License Notice: *
- * *
- * The contents of this file are subject to the Sun Public License Version *
- * 1.0 (the "License"); you may not use this file except in compliance with *
- * the License. A copy of the License is available at http://www.sun.com *
- * *
- * The Original Code is BeanShell. The Initial Developer of the Original *
- * Code is Pat Niemeyer. Portions created by Pat Niemeyer are Copyright *
- * (C) 2000. All Rights Reserved. *
- * *
- * GNU Public License Notice: *
- * *
- * Alternatively, the contents of this file may be used under the terms of *
- * the GNU Lesser General Public License (the "LGPL"), in which case the *
- * provisions of LGPL are applicable instead of those above. If you wish to *
- * allow use of your version of this file only under the terms of the LGPL *
- * and not to allow others to use your version of this file under the SPL, *
- * indicate your decision by deleting the provisions above and replace *
- * them with the notice and other provisions required by the LGPL. If you *
- * do not delete the provisions above, a recipient may use your version of *
- * this file under either the SPL or the LGPL. *
- * *
- * Patrick Niemeyer (pat@pat.net) *
- * Author of Learning Java, O'Reilly & Associates *
- * http://www.pat.net/~pat/ *
- * *
- *****************************************************************************/
- package bsh;
- /**
- name [ = initializer ]
- evaluate name and return optional initializer
- */
- class BSHVariableDeclarator extends SimpleNode
- {
- // The token.image text of the name... never changes.
- public String name;
- public Modifiers modifiers;
- BSHVariableDeclarator(int id) { super(id); }
- /**
- Evaluate the optional initializer value.
- (The name was set at parse time.)
- A variable declarator can be evaluated with or without preceding
- type information. Currently the type info is only used by array
- initializers in the case where there is no explicitly declared type.
- @param typeNode is the BSHType node. Its info is passed through to any
- variable intializer children for the case where the array initializer
- does not declare the type explicitly. e.g.
- int [] a = { 1, 2 };
- typeNode may be null to indicate no type information available.
- */
- public Object eval(
- BSHType typeNode, CallStack callstack, Interpreter interpreter)
- throws EvalError
- {
- // null value means no value
- Object value = null;
- if ( jjtGetNumChildren() > 0 )
- {
- SimpleNode initializer = (SimpleNode)jjtGetChild(0);
- /*
- If we have type info and the child is an array initializer
- pass it along... Else use the default eval style.
- (This allows array initializer to handle the problem...
- allowing for future enhancements in loosening types there).
- */
- if ( (typeNode != null)
- && initializer instanceof BSHArrayInitializer
- )
- value = ((BSHArrayInitializer)initializer).eval(
- typeNode.getBaseType(), typeNode.getArrayDims(),
- callstack, interpreter);
- else
- value = initializer.eval( callstack, interpreter);
- }
- if ( value == Primitive.VOID )
- throw new EvalError("Void initializer.", this, callstack );
- return value;
- }
- }