/src/Boo.Lang.Compiler/Steps/AbstractVisitorCompilerStep.cs
C# | 229 lines | 170 code | 33 blank | 26 comment | 5 complexity | 0b2a8820168f4f156dee7a5abfdaa273 MD5 | raw file
Possible License(s): GPL-2.0
- #region license
- // Copyright (c) 2004, Rodrigo B. de Oliveira (rbo@acm.org)
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without modification,
- // are permitted provided that the following conditions are met:
- //
- // * Redistributions of source code must retain the above copyright notice,
- // this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above copyright notice,
- // this list of conditions and the following disclaimer in the documentation
- // and/or other materials provided with the distribution.
- // * Neither the name of Rodrigo B. de Oliveira nor the names of its
- // contributors may be used to endorse or promote products derived from this
- // software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
- // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- // THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- #endregion
-
- using System;
- using Boo.Lang.Compiler;
- using Boo.Lang.Compiler.Ast;
- using Boo.Lang.Compiler.TypeSystem;
-
- namespace Boo.Lang.Compiler.Steps
- {
- public abstract class AbstractVisitorCompilerStep : Boo.Lang.Compiler.Ast.DepthFirstVisitor, ICompilerStep
- {
- protected CompilerContext _context;
-
- protected AbstractVisitorCompilerStep()
- {
- }
-
- protected CompilerContext Context
- {
- get
- {
- return _context;
- }
- }
-
- protected BooCodeBuilder CodeBuilder
- {
- get
- {
- return _context.CodeBuilder;
- }
- }
-
- protected Boo.Lang.Compiler.Ast.CompileUnit CompileUnit
- {
- get
- {
- return _context.CompileUnit;
- }
- }
-
- protected NameResolutionService NameResolutionService
- {
- get
- {
- return _context.NameResolutionService;
- }
- }
-
- protected CompilerParameters Parameters
- {
- get
- {
- return _context.Parameters;
- }
- }
-
- protected CompilerErrorCollection Errors
- {
- get
- {
- return _context.Errors;
- }
- }
-
- protected CompilerWarningCollection Warnings
- {
- get
- {
- return _context.Warnings;
- }
- }
-
- protected TypeSystemServices TypeSystemServices
- {
- get
- {
- return _context.TypeSystemServices;
- }
- }
-
- public override void OnQuasiquoteExpression(Boo.Lang.Compiler.Ast.QuasiquoteExpression node)
- {
- // ignore quasi-quotes
- }
-
- override protected void OnError(Node node, Exception error)
- {
- _context.TraceError("{0}: Internal compiler error on node '{2}': {1}", node.LexicalInfo, error, node);
- base.OnError(node, error);
- }
-
- protected void Error(Expression node, CompilerError error)
- {
- Error(node);
- Errors.Add(error);
- }
-
- protected void Error(CompilerError error)
- {
- Errors.Add(error);
- }
-
- protected void Error(Expression node)
- {
- node.ExpressionType = TypeSystemServices.ErrorEntity;
- }
-
- protected void Bind(Node node, IEntity tag)
- {
- _context.TraceVerbose("{0}: Node '{1}' bound to '{2}'.", node.LexicalInfo, node, tag);
- node.Entity = tag;
- }
-
- public IEntity GetEntity(Node node)
- {
- return TypeSystemServices.GetEntity(node);
- }
-
- public IMethod GetEntity(Method node)
- {
- return (IMethod)TypeSystemServices.GetEntity(node);
- }
-
- public IProperty GetEntity(Property node)
- {
- return (IProperty)TypeSystemServices.GetEntity(node);
- }
-
- protected void BindExpressionType(Expression node, IType type)
- {
- _context.TraceVerbose("{0}: Type of expression '{1}' bound to '{2}'.", node.LexicalInfo, node, type);
- node.ExpressionType = type;
- }
-
- protected IType GetConcreteExpressionType(Expression expression)
- {
- return TypeSystemServices.GetConcreteExpressionType(expression);
- }
-
- protected virtual IType GetExpressionType(Expression node)
- {
- return TypeSystemServices.GetExpressionType(node);
- }
-
- public IType GetType(Node node)
- {
- return TypeSystemServices.GetType(node);
- }
-
- public InternalLocal GetInternalLocal(Node local)
- {
- return (InternalLocal)GetEntity(local);
- }
-
- protected void NotImplemented(Node node, string feature)
- {
- throw CompilerErrorFactory.NotImplemented(node, feature);
- }
-
- public virtual void Initialize(CompilerContext context)
- {
- if (null == context)
- {
- throw new ArgumentNullException("context");
- }
- _context = context;
- }
-
- public abstract void Run();
-
- public virtual void Dispose()
- {
- _context = null;
- }
-
- private readonly object VisitedAnnotationKey = new object();
-
- protected void MarkVisited(Node node)
- {
- node[VisitedAnnotationKey] = VisitedAnnotationKey;
- _context.TraceInfo("{0}: node '{1}' mark visited.", node.LexicalInfo, node);
- }
-
- protected virtual void EnsureRelatedNodeWasVisited(Node sourceNode, IEntity entity)
- {
- IInternalEntity internalEntity = entity as IInternalEntity;
- if (null != internalEntity)
- {
- Node node = internalEntity.Node;
- if (!WasVisited(node))
- {
- Visit(node);
- }
- }
- }
-
- protected bool WasVisited(Node node)
- {
- return node.ContainsAnnotation(VisitedAnnotationKey);
- }
- }
- }