| /******************************************************************************* |
| * Copyright (c) 2009, 2019 Xored Software Inc and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-v20.html |
| * |
| * Contributors: |
| * Xored Software Inc - initial API and implementation and/or initial documentation |
| *******************************************************************************/ |
| package org.eclipse.rcptt.core.ecl.parser.model; |
| |
| import org.eclipse.rcptt.core.ecl.model.Declaration; |
| import org.eclipse.rcptt.core.ecl.model.IDeclContainer; |
| import org.eclipse.rcptt.core.ecl.model.ProcDecl; |
| import org.eclipse.rcptt.core.ecl.parser.ast.Arg; |
| import org.eclipse.rcptt.core.ecl.parser.ast.Command; |
| import org.eclipse.rcptt.core.ecl.parser.ast.Id; |
| import org.eclipse.rcptt.core.ecl.parser.ast.LiteralArg; |
| import org.eclipse.rcptt.core.ecl.parser.ast.Node; |
| import org.eclipse.rcptt.core.ecl.parser.ast.Reference; |
| import org.eclipse.rcptt.core.ecl.parser.ast.Script; |
| |
| public class Resolver { |
| public static Reference resolve(Script script, int offset, IDeclContainer cont) { |
| NodePath path = PathBuilder.path(script, offset); |
| Node lastNode = path.lastNode(); |
| if (!(lastNode instanceof Id)) { |
| return null; |
| } |
| |
| Id id = (Id) lastNode; |
| Node parent = path.fromEnd(1); |
| boolean isCommand = parent instanceof Command; |
| boolean isArgValue = parent instanceof LiteralArg && ((LiteralArg) parent).value.contains(offset); |
| boolean isArgName = parent instanceof Arg && ((Arg) parent).name != null |
| && ((Arg) parent).name.contains(offset); |
| |
| if (!isCommand && !isArgValue && !isArgName) { |
| return null; |
| } |
| |
| boolean dollar = id.text.startsWith("$"); |
| if (isArgValue && !dollar) { |
| return null; |
| } |
| |
| boolean dash = id.text.startsWith("-"); |
| if (isArgName && !dash) { |
| return null; |
| } |
| |
| Declaration decl = null; |
| if (isCommand) { |
| decl = dollar ? cont.resolveVar(id.text.substring(1)) : cont.resolveProc(id.text); |
| } else if (isArgName) { |
| Command command = path.lastOf(Command.class); |
| if (command == null) { |
| return null; |
| } |
| ProcDecl proc = cont.resolveProc(command.name.text); |
| if (proc == null) { |
| return null; |
| } |
| |
| decl = proc.resolveArg(id.text.substring(1)); |
| } else if (isArgValue) { |
| decl = cont.resolveVar(id.text.substring(1)); |
| } |
| |
| if (decl == null) { |
| return null; |
| } |
| return new Reference(id, decl); |
| |
| } |
| } |