diff options
Diffstat (limited to 'plugins/org.eclipse.jem.proxy/initParser/org/eclipse/jem/internal/proxy/initParser/Expression.java')
| -rw-r--r-- | plugins/org.eclipse.jem.proxy/initParser/org/eclipse/jem/internal/proxy/initParser/Expression.java | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/plugins/org.eclipse.jem.proxy/initParser/org/eclipse/jem/internal/proxy/initParser/Expression.java b/plugins/org.eclipse.jem.proxy/initParser/org/eclipse/jem/internal/proxy/initParser/Expression.java deleted file mode 100644 index 5e7ec38a0..000000000 --- a/plugins/org.eclipse.jem.proxy/initParser/org/eclipse/jem/internal/proxy/initParser/Expression.java +++ /dev/null @@ -1,130 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2001, 2005 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.jem.internal.proxy.initParser; -/* - * $RCSfile: Expression.java,v $ - * $Revision: 1.3 $ $Date: 2005/08/24 20:39:07 $ - */ - - -import java.util.*; -/** - * Insert the type's description here. - * Creation date: (11/01/00 8:46:44 PM) - * @author: Administrator - */ -public abstract class Expression implements IParserConstants { - protected Expression currentExpression; - protected List fExpressionStack; - protected ClassLoader fClassLoader; - public int parenthesisLevel = 0; -/** Compare the two char arrays - */ -public static boolean compare(char[] from , char[] to){ - - return Arrays.equals(from, to); -} -/** - * Expression constructor comment. - * Note: If any exceptions that are due to evaluation, and not due to some - * invalid state, then the exception should be wrappered in an EvaluationException, - * and the EvaluationException thrown instead. This way we can distinquish between - * valid exceptions that result evaluations (such as null pointer exceptions) from - * parser errors due to string is too complicated. - */ -public abstract Object evaluate() throws Exception; - -public abstract boolean isComplete(); -/** - * Return a class type that the expression syntactically would produce. - * For example, if a field is of type XYZ, return XYZ, even though - * the value of the field may be SubXYZ where SubXYZ is a subclass of XYZ. - */ -public abstract Class getTypeClass() throws Exception; -/** - * In evaluation phase, get the type class from the expression. - * If typeclass not found, then a ClassCastException is thrown. - * @param exp To getTypeClass from - * @return type class. - * @throws Exception ClassNotFoundException if type not found. - */ -public Class getEvaluationTypeClass(Expression exp) throws Exception { - Class cls = exp.getTypeClass(); - if (cls == null) - throw new EvaluationException(new ClassNotFoundException(exp.getTypeClassName())); - return cls; -} - -/** - * @return Type name that should be returned from this expression. - */ -protected abstract String getTypeClassName(); - -public boolean isNumber(char[] token){ - - if ( token.length == 0) return false; - // See whether the token is a number - int parsePosition = 0; - // Take into account it may start with a - sign, e.g. -1 - if ( token[0] == '-' ) parsePosition = 1; - for (int i = parsePosition; i < token.length ; i++){ - // If the next token is a digit return true - // Other things like decimals or primitive types, e.g. 2.2 or 2.2f are - // handled by NumberLiteral - return Character.isDigit(token[i]); - } - return true; -} -public boolean isPop(){ - return false; -} -protected void popExpressionStack(){ - - if ( fExpressionStack != null && fExpressionStack.size() > 0 ) { - currentExpression = (Expression) fExpressionStack.remove(fExpressionStack.size()-1); - } -} -protected void pushExpressionStack(Expression anExpression){ - - if ( fExpressionStack == null ) fExpressionStack = new ArrayList(2); - // The current expression should go onto the stack - fExpressionStack.add(currentExpression); - // The current expression is replaced with the argument - currentExpression = anExpression; - -} - -void setClassLoader(ClassLoader aClassLoader){ -} - -/** - * Push an expression onto us - * Return the new expression onto which subsequent token should be pushed - */ -public abstract Expression push(char[] token , char tokenDelimiter); - -/** - * Answer if this expression results in a primitive. - */ -public abstract boolean isPrimitive() throws Exception; - -public String toString(int depth, boolean aBreak){ - StringBuffer buffer = new StringBuffer(); - if ( aBreak ) { - buffer.append(System.getProperty("System.lineSeparator")); //$NON-NLS-1$ - } - for(int i=0;i<depth;i++){ - buffer.append(" "); //$NON-NLS-1$ - } - buffer.append(toString()); - return buffer.toString(); -} -} |