root / trunk / compiler / ooasCompiler / src / org / momut / ooas / visitors / OoaReplaceOpaqueVisitor.java @ 9
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/**
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*
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* OOAS Compiler
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*
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* Copyright 2015, AIT Austrian Institute of Technology.
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* This code is based on the C# Version of the OOAS Compiler, which is
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* copyright 2015 by the Institute of Software Technology, Graz University
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* of Technology with portions copyright by the AIT Austrian Institute of
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* Technology. All rights reserved.
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*
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* SEE THE "LICENSE" FILE FOR THE TERMS UNDER WHICH THIS FILE IS PROVIDED.
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*
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* If you modify the file please update the list of contributors below to in-
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* clude your name. Please also stick to the coding convention of using TABs
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* to do the basic (block-level) indentation and spaces for anything after
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* that. (Enable the display of special chars and it should be pretty obvious
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* what this means.) Also, remove all trailing whitespace.
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*
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* Contributors:
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* Willibald Krenn (AIT)
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* Stephan Zimmerer (AIT)
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* Markus Demetz (AIT)
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* Christoph Czurda (AIT)
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*
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*/
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package org.momut.ooas.visitors; |
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import org.momut.ooas.ast.AstNodeTypeEnum; |
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import org.momut.ooas.ast.IAst; |
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import org.momut.ooas.ast.expressions.Expression; |
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import org.momut.ooas.ast.expressions.ObjectConstructor; |
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import org.momut.ooas.ast.expressions.UnaryOperator; |
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import org.momut.ooas.ast.identifiers.AttributeIdentifier; |
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import org.momut.ooas.ast.identifiers.ExpressionVariableIdentifier; |
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import org.momut.ooas.ast.identifiers.Identifier; |
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import org.momut.ooas.ast.identifiers.LocalVariableIdentifier; |
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import org.momut.ooas.ast.identifiers.ParameterIdentifier; |
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import org.momut.ooas.ast.types.FunctionType; |
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import org.momut.ooas.ast.types.ListType; |
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import org.momut.ooas.ast.types.MapType; |
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import org.momut.ooas.ast.types.OpaqueType; |
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import org.momut.ooas.ast.types.TupleType; |
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import org.momut.ooas.ast.types.TypeKind; |
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import org.momut.ooas.ast.types.Type; |
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import org.momut.ooas.parser.ParserState; |
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import org.momut.ooas.utils.exceptions.NotImplementedException; |
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/// <summary>
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/// Replaces all Opaque types (types we could not resolve in the first run of the parser)
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/// with the resolved ones. Note: The actual resolving has already been done, i.e., the
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/// resolvedType member is already set to the correct value. Now we just want to get an
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/// AST that does not contain any OpaqueTypeNodes at all.
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/// </summary>
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public final class OoaReplaceOpaqueVisitor extends OoaCompleteAstTraversalVisitor |
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{ |
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private void ReplaceOpaque(IAst parent) |
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{ |
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switch (parent.nodeType())
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{ |
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case type:
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ReplaceOpaqueInType((Type)parent);
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break;
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case identifier:
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ReplaceOpaqueInIdentifier((Identifier)parent); |
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break;
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case expression:
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ReplaceOpaqueInExpression((Expression)parent);
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break;
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default:
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throw new NotImplementedException(); |
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} |
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} |
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private void ReplaceOpaqueInExpression(Expression expression) |
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{ |
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switch (expression.kind())
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{ |
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case ObjectConstr:
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ObjectConstructor c = (ObjectConstructor)expression; |
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c.SetType(((OpaqueType)c.type()).resolvedType()); |
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break;
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case Cast:
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UnaryOperator unop = (UnaryOperator)expression; |
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unop.SetType(((OpaqueType)unop.type()).resolvedType()); |
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break;
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default:
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throw new NotImplementedException(); |
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} |
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} |
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private void ReplaceOpaqueInIdentifier(Identifier identifier) |
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{ |
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switch (identifier.kind())
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{ |
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case AttributeIdentifier:
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AttributeIdentifier id = (AttributeIdentifier)identifier; |
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assert(id.type() instanceof OpaqueType); // that's why we are here |
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id.SetType(((OpaqueType)id.type()).resolvedType()); |
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break;
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case ExpressionVariableIdentifier:
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ExpressionVariableIdentifier exprvar = (ExpressionVariableIdentifier)identifier; |
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assert(exprvar.type() instanceof OpaqueType); |
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exprvar.SetType(((OpaqueType)exprvar.type()).resolvedType()); |
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break;
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case LocalVariableIdentifier:
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LocalVariableIdentifier var = (LocalVariableIdentifier)identifier; |
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assert(var.type() instanceof OpaqueType); |
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var.SetType(((OpaqueType)var.type()).resolvedType()); |
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break;
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case ParameterIdentifier:
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ParameterIdentifier param = (ParameterIdentifier)identifier; |
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assert(param.type() instanceof OpaqueType); |
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param.SetType(((OpaqueType)identifier.type()).resolvedType()); |
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break;
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default:
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throw new NotImplementedException(); |
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} |
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} |
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private void ReplaceOpaqueInType(Type ulyssesType) |
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{ |
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switch (ulyssesType.kind())
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{ |
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case FunctionType:
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FunctionType func = (FunctionType)ulyssesType; |
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if (func.returnType() instanceof OpaqueType) |
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func.SetReturnType(((OpaqueType)func.returnType()).resolvedType()); |
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for (int cntr = 0; cntr < func.parameter().size(); cntr ++) |
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{ |
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Type t = func.parameter().get(cntr);
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if (t.kind() == TypeKind.OpaqueType)
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func.parameter().set(cntr, ((OpaqueType)t).resolvedType()); |
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} |
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break;
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case ListType:
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ListType alist = (ListType)ulyssesType; |
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if (alist.innerType().kind() == TypeKind.OpaqueType)
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alist.SetInnerType(((OpaqueType)alist.innerType()).resolvedType()); |
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break;
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case MapType:
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MapType aMap = (MapType)ulyssesType; |
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if (aMap.fromType().kind() == TypeKind.OpaqueType)
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aMap.SetFromType(((OpaqueType)aMap.fromType()).resolvedType()); |
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if (aMap.toType().kind() == TypeKind.OpaqueType)
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aMap.SetToType(((OpaqueType)aMap.toType()).resolvedType()); |
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break;
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/*case TypeKind.OoActionSystemType:
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// handeled by the other cases...
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break;*/
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case TupleType:
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TupleType aTuple = (TupleType)ulyssesType; |
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for (int cntr = 0; cntr < aTuple.innerTypes().size(); cntr ++) { |
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Type t = aTuple.innerTypes().get(cntr);
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if (t.kind() == TypeKind.OpaqueType)
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aTuple.innerTypes().set(cntr, ((OpaqueType)t).resolvedType()); |
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} |
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break;
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default:
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throw new NotImplementedException(); |
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} |
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} |
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@Override
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protected void VisitAstElement(IAst subElement, IAst parent) |
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{ |
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super.VisitAstElement(subElement, parent);
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/*see whether the subElement is an OpaqueType, we need
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to replace.*/
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if ((subElement != null) |
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&& (subElement.nodeType() == AstNodeTypeEnum.type) |
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&& (((Type)subElement).kind() == TypeKind.OpaqueType))
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ReplaceOpaque(parent); |
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} |
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public OoaReplaceOpaqueVisitor(ParserState aState)
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{ |
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super(aState);
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} |
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} |