/**
* MVEL 2.0
* Copyright (C) 2007 The Codehaus
* Mike Brock, Dhanji Prasanna, John Graham, Mark Proctor
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.mvel2.ast;
import org.mvel2.CompileException;
import org.mvel2.ParserContext;
import org.mvel2.compiler.CompiledAccExpression;
import org.mvel2.compiler.ExecutableStatement;
import org.mvel2.integration.VariableResolverFactory;
import static org.mvel2.MVEL.compileSetExpression;
import static org.mvel2.MVEL.eval;
import static org.mvel2.PropertyAccessor.set;
import static org.mvel2.compiler.AbstractParser.getCurrentThreadParserContext;
import static org.mvel2.util.ParseTools.*;
/**
* @author Christopher Brock
*/
public class DeepAssignmentNode extends ASTNode implements Assignment {
private String property;
// private char[] stmt;
private CompiledAccExpression acc;
private ExecutableStatement statement;
public DeepAssignmentNode(char[] expr, int start, int offset, int fields, int operation, String name, ParserContext pCtx) {
super(pCtx);
this.fields |= DEEP_PROPERTY | fields;
this.expr = expr;
this.start = start;
this.offset = offset;
int mark;
if (operation != -1) {
this.egressType = ((statement =
(ExecutableStatement) subCompileExpression(
createShortFormOperativeAssignment(this.property = name, expr, start, offset, operation), pCtx))).getKnownEgressType();
}
else if ((mark = find(expr, start, offset, '=')) != -1) {
property = createStringTrimmed(expr, start, mark - start);
// this.start = mark + 1;
this.start = skipWhitespace(expr, mark + 1);
if (this.start >= start + offset) {
throw new CompileException("unexpected end of statement", expr, mark + 1);
}
this.offset = offset - (this.start - start);
if ((fields & COMPILE_IMMEDIATE) != 0) {
statement = (ExecutableStatement) subCompileExpression(expr, this.start, this.offset, pCtx);
}
}
else {
property = new String(expr);
}
if ((fields & COMPILE_IMMEDIATE) != 0) {
acc = (CompiledAccExpression) compileSetExpression(property.toCharArray(), start, offset, pCtx);
}
}
public DeepAssignmentNode(char[] expr, int start, int offset, int fields, ParserContext pCtx) {
this(expr, start, offset, fields, -1, null, pCtx);
}
public Object getReducedValueAccelerated(Object ctx, Object thisValue, VariableResolverFactory factory) {
if (statement == null) {
statement = (ExecutableStatement) subCompileExpression(expr, this.start, this.offset);
acc = (CompiledAccExpression) compileSetExpression(property.toCharArray(), statement.getKnownEgressType(),
getCurrentThreadParserContext());
}
acc.setValue(ctx, thisValue, factory, ctx = statement.getValue(ctx, thisValue, factory));
return ctx;
}
public Object getReducedValue(Object ctx, Object thisValue, VariableResolverFactory factory) {
set(ctx, factory, property, ctx = eval(expr, this.start, this.offset, ctx, factory), pCtx);
return ctx;
}
@Override
public String getAbsoluteName() {
return property.substring(0, property.indexOf('.'));
}
public String getAssignmentVar() {
return property;
}
public char[] getExpression() {
return subArray(expr, start, offset);
}
public boolean isNewDeclaration() {
return false;
}
public boolean isAssignment() {
return true;
}
public void setValueStatement(ExecutableStatement stmt) {
this.statement = stmt;
}
}