| /*=============================================================================# |
| # 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.STATUS1_SYNTAX_MISSING_TOKEN; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.statet.jcommons.lang.NonNull; |
| 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; |
| |
| |
| /** |
| * <code>expr; expr; ...</code> |
| */ |
| @NonNullByDefault |
| abstract class ExpressionList extends RAstNode { |
| |
| |
| final List<Expression> expressions= new ArrayList<>(); |
| |
| |
| ExpressionList() { |
| } |
| |
| |
| @Override |
| public final boolean hasChildren() { |
| return (this.expressions.size() > 0); |
| } |
| |
| @Override |
| public final RAstNode[] getChildren() { |
| final int n= this.expressions.size(); |
| final RAstNode[] children= new @NonNull RAstNode[n]; |
| for (int i= 0; i < n; i++) { |
| children[i]= this.expressions.get(i).node; |
| } |
| return children; |
| } |
| |
| @Override |
| public final int getChildIndex(final AstNode child) { |
| for (int i= this.expressions.size() - 1; i >= 0; i--) { |
| if (this.expressions.get(i).node == child) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| @Override |
| public final int getChildCount() { |
| return this.expressions.size(); |
| } |
| |
| @Override |
| public final RAstNode getChild(final int i) { |
| return this.expressions.get(i).node; |
| } |
| |
| @Override |
| public final void acceptInRChildren(final RAstVisitor visitor) throws InvocationTargetException { |
| acceptChildrenExpr(visitor, this.expressions); |
| } |
| |
| @Override |
| public final void acceptInChildren(final AstVisitor visitor) throws InvocationTargetException { |
| for (final Expression expr : this.expressions) { |
| visitor.visit(expr.node); |
| } |
| } |
| |
| |
| @Override |
| final @Nullable Expression getExpr(final RAstNode child) { |
| for (int i= this.expressions.size() - 1; i >= 0; i--) { |
| if (this.expressions.get(i).node == child) { |
| return this.expressions.get(i); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| final @Nullable Expression getLeftExpr() { |
| return null; |
| } |
| |
| @Override |
| final @Nullable Expression getRightExpr() { |
| return null; |
| } |
| |
| Expression appendNewExpr() { |
| final Expression expr= new Expression(); |
| this.expressions.add(expr); |
| return expr; |
| } |
| |
| void setSeparator(final int offset) { |
| } |
| |
| |
| @Override |
| final int getMissingExprStatus(final Expression expr) { |
| return STATUS1_SYNTAX_MISSING_TOKEN; |
| } |
| |
| } |