| /*=============================================================================# |
| # Copyright (c) 2007, 2020 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.r.core.rsource.ast; |
| |
| import static org.eclipse.statet.r.core.rsource.IRSourceConstants.STATUS2_SYNTAX_EXPR_AFTER_OP_MISSING; |
| |
| import java.lang.reflect.InvocationTargetException; |
| |
| import org.eclipse.statet.jcommons.lang.NonNullByDefault; |
| import org.eclipse.statet.jcommons.lang.Nullable; |
| |
| import org.eclipse.statet.ltk.ast.core.AstNode; |
| import org.eclipse.statet.ltk.ast.core.AstVisitor; |
| import org.eclipse.statet.r.core.rlang.RTerminal; |
| |
| |
| /** |
| * <code>+ §right§</code> |
| * <code>- §right§</code> |
| */ |
| @NonNullByDefault |
| public abstract class Sign extends RAstNode { |
| |
| |
| static final class PlusSign extends Sign { |
| |
| |
| PlusSign() { |
| } |
| |
| |
| @Override |
| public final NodeType getNodeType() { |
| return NodeType.SIGN; |
| } |
| |
| @Override |
| public final RTerminal getOperator(final int index) { |
| return RTerminal.PLUS; |
| } |
| |
| @Override |
| public final boolean equalsSingle(final RAstNode element) { |
| return (NodeType.SIGN == element.getNodeType()); |
| } |
| |
| } |
| |
| static final class MinusSign extends Sign { |
| |
| |
| MinusSign() { |
| } |
| |
| |
| @Override |
| public final NodeType getNodeType() { |
| return NodeType.SIGN; |
| } |
| |
| @Override |
| public final RTerminal getOperator(final int index) { |
| return RTerminal.MINUS; |
| } |
| |
| |
| @Override |
| public final boolean equalsSingle(final RAstNode element) { |
| return (NodeType.SIGN == element.getNodeType()); |
| } |
| |
| } |
| |
| static final class Not extends Sign { |
| |
| @Override |
| public final NodeType getNodeType() { |
| return NodeType.NOT; |
| } |
| |
| @Override |
| public final RTerminal getOperator(final int index) { |
| return RTerminal.NOT; |
| } |
| |
| |
| @Override |
| public final boolean equalsSingle(final RAstNode element) { |
| return (NodeType.NOT == element.getNodeType()); |
| } |
| |
| } |
| |
| |
| final Expression rightExpr= new Expression(); |
| |
| |
| protected Sign() { |
| } |
| |
| |
| @Override |
| public final boolean hasChildren() { |
| return true; |
| } |
| |
| @Override |
| public final int getChildCount() { |
| return 1; |
| } |
| |
| @Override |
| public final RAstNode getChild(final int index) { |
| if (index == 0) { |
| return this.rightExpr.node; |
| } |
| throw new IndexOutOfBoundsException(); |
| } |
| |
| @Override |
| public final RAstNode[] getChildren() { |
| return new RAstNode[] { this.rightExpr.node }; |
| } |
| |
| @Override |
| public final int getChildIndex(final AstNode child) { |
| if (this.rightExpr.node == child) { |
| return 0; |
| } |
| return -1; |
| } |
| |
| public final RAstNode getRightChild() { |
| return this.rightExpr.node; |
| } |
| |
| @Override |
| public final void acceptInR(final RAstVisitor visitor) throws InvocationTargetException { |
| visitor.visit(this); |
| } |
| |
| @Override |
| public final void acceptInRChildren(final RAstVisitor visitor) throws InvocationTargetException { |
| this.rightExpr.node.acceptInR(visitor); |
| } |
| |
| @Override |
| public final void acceptInChildren(final AstVisitor visitor) throws InvocationTargetException { |
| visitor.visit(this.rightExpr.node); |
| } |
| |
| |
| @Override |
| final @Nullable Expression getExpr(final RAstNode child) { |
| if (this.rightExpr.node == child) { |
| return this.rightExpr; |
| } |
| return null; |
| } |
| |
| @Override |
| final @Nullable Expression getLeftExpr() { |
| return null; |
| } |
| |
| @Override |
| final Expression getRightExpr() { |
| return this.rightExpr; |
| } |
| |
| |
| @Override |
| final int getMissingExprStatus(final Expression expr) { |
| if (this.rightExpr == expr) { |
| return STATUS2_SYNTAX_EXPR_AFTER_OP_MISSING; |
| } |
| throw new IllegalArgumentException(); |
| } |
| |
| @Override |
| final void updateEndOffset() { |
| this.endOffset= this.rightExpr.node.endOffset; |
| } |
| |
| |
| @Override |
| public boolean equalsValue(final RAstNode element) { |
| if (getNodeType() == element.getNodeType() |
| && getOperator(0) == element.getOperator(0) ) { |
| final Sign other= (Sign)element; |
| return (this.rightExpr.node.equalsValue(other.rightExpr.node)); |
| } |
| return false; |
| } |
| |
| } |