diff options
Diffstat (limited to 'bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/internal/p2/metadata/expression/And.java')
-rw-r--r-- | bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/internal/p2/metadata/expression/And.java | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/internal/p2/metadata/expression/And.java b/bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/internal/p2/metadata/expression/And.java new file mode 100644 index 000000000..7e8adf20e --- /dev/null +++ b/bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/internal/p2/metadata/expression/And.java @@ -0,0 +1,50 @@ +/******************************************************************************* + * Copyright (c) 2010 Cloudsmith Inc. 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: + * Cloudsmith Inc. - initial API and implementation + *******************************************************************************/ +package org.eclipse.equinox.internal.p2.metadata.expression; + +import org.eclipse.equinox.p2.metadata.expression.IEvaluationContext; + +/** + * n-ary AND operator. The full evaluation is <code>true</code> if all its operands evaluate to + * <code>true</code>. + */ +final class And extends NAry { + And(Expression[] operands) { + super(assertLength(operands, 2, OPERATOR_AND)); + } + + public Object evaluate(IEvaluationContext context) { + for (int idx = 0; idx < operands.length; ++idx) { + if (operands[idx].evaluate(context) != Boolean.TRUE) + return Boolean.FALSE; + } + return Boolean.TRUE; + } + + public int getExpressionType() { + return TYPE_AND; + } + + public String getOperator() { + return OPERATOR_AND; + } + + public int getPriority() { + return PRIORITY_AND; + } + + public void toLDAPString(StringBuffer buf) { + buf.append("(&"); //$NON-NLS-1$ + for (int idx = 0; idx < operands.length; ++idx) + operands[idx].toLDAPString(buf); + buf.append(')'); + } +} |