private AST createFromNodeType(int nodeTypeIndex)
{
Debug.Assert((nodeTypeIndex >= 0) && (nodeTypeIndex <= nodeTypeObjectList_.Length), "Invalid AST node type!");
AST newNode = null;
ASTNodeCreator creator = (ASTNodeCreator)typename2creator_[nodeTypeIndex.ToString()];
if (creator != null)
{
newNode = creator.Create();
}
else
{
Type nodeTypeObject = nodeTypeObjectList_[nodeTypeIndex];
if (nodeTypeObject == null)
{
if (defaultCreator_ == null)
{
newNode = createFromNodeTypeObject(defaultASTNodeTypeObject_);
}
else
{
newNode = defaultCreator_.Create();
}
}
else
{
newNode = createFromNodeTypeObject(nodeTypeObject);
}
}
return(newNode);
}
/// <summary>
/// Register an ASTNodeCreator for a given Token type ID.
/// </summary>
/// <param name="NodeType">The Token type ID.</param>
/// <param name="creator">The creater to register.</param>
public void setTokenTypeASTNodeCreator(int NodeType, ASTNodeCreator creator)
{
// check validity of arguments...
if (NodeType < Token.MIN_USER_TYPE)
{
throw new ANTLRException("Internal parser error: Cannot change AST Node Type for Token ID '" + NodeType + "'");
}
// resize up to and including 'type' and initialize any gaps to default
// factory.
if (NodeType > (heteroList_.Length + 1))
{
setMaxNodeType(NodeType);
}
// And add new thing..
if (heteroList_[NodeType] == null)
{
heteroList_[NodeType] = new FactoryEntry(creator);
}
else
{
heteroList_[NodeType].Creator = creator;
}
//typename2creator_[NodeType.ToString()] = creator;
typename2creator_[creator.ASTNodeTypeName] = creator;
}
/// <summary>
/// Sets the global default AST Node Type for this ASTFactory instance.
/// This method also attempts to load the <see cref="System.Type"/> instance
/// for the specified typename.
/// </summary>
/// <param name="t">Fully qualified AST Node Type name.</param>
public virtual void setASTNodeType(string t)
{
if (defaultCreator_ != null)
{
if (t != defaultCreator_.ASTNodeTypeName)
{
defaultCreator_ = null;
}
}
defaultASTNodeTypeObject_ = loadNodeTypeObject(t);
}
private AST createFromNodeName(string nodeTypeName)
{
AST newNode = null;
ASTNodeCreator creator = (ASTNodeCreator)typename2creator_[nodeTypeName];
if (creator != null)
{
newNode = creator.Create();
if (newNode == null)
{
throw new ArgumentException("Unable to create AST Node Type: '" + nodeTypeName + "'");
}
}
else
{
newNode = createFromNodeTypeObject(loadNodeTypeObject(nodeTypeName));
}
return(newNode);
}
private AST createFromAST(AST node)
{
AST newNode = null;
Type nodeAsTypeObj = node.GetType();
ASTNodeCreator creator = (ASTNodeCreator)typename2creator_[nodeAsTypeObj.FullName];
if (creator != null)
{
newNode = creator.Create();
if (newNode == null)
{
throw new ArgumentException("Unable to create AST Node Type: '" + nodeAsTypeObj.FullName + "'");
}
}
else
{
newNode = createFromNodeTypeObject(nodeAsTypeObj);
}
return(newNode);
}
public FactoryEntry(ASTNodeCreator creator)
{
Creator = creator;
}
public FactoryEntry(Type typeObj, ASTNodeCreator creator)
{
NodeTypeObject = typeObj;
Creator = creator;
}
/// <summary>
/// Register an ASTNodeCreator to be used for creating node by default.
/// </summary>
/// <param name="creator">The ASTNodeCreator.</param>
public void setASTNodeCreator(ASTNodeCreator creator)
{
defaultCreator_ = creator;
}
public FactoryEntry(ASTNodeCreator creator)
{
Creator = creator;
}
public FactoryEntry(Type typeObj, ASTNodeCreator creator)
{
NodeTypeObject = typeObj;
Creator = creator;
}
/// <summary>
/// Sets the global default AST Node Type for this ASTFactory instance.
/// This method also attempts to load the <see cref="System.Type"/> instance
/// for the specified typename.
/// </summary>
/// <param name="t">Fully qualified AST Node Type name.</param>
public virtual void setASTNodeType(string t)
{
if (defaultCreator_ != null)
{
if (t != defaultCreator_.ASTNodeTypeName)
{
defaultCreator_ = null;
}
}
defaultASTNodeTypeObject_ = loadNodeTypeObject(t);
}
/// <summary>
/// Register an ASTNodeCreator to be used for creating node by default.
/// </summary>
/// <param name="creator">The ASTNodeCreator.</param>
public void setASTNodeCreator(ASTNodeCreator creator)
{
defaultCreator_ = creator;
}
/// <summary>
/// Register an ASTNodeCreator for a given Token type ID.
/// </summary>
/// <param name="NodeType">The Token type ID.</param>
/// <param name="creator">The creater to register.</param>
public void setTokenTypeASTNodeCreator(int NodeType, ASTNodeCreator creator)
{
// check validity of arguments...
if( NodeType < Token.MIN_USER_TYPE )
throw new ANTLRException("Internal parser error: Cannot change AST Node Type for Token ID '" + NodeType + "'");
// resize up to and including 'type' and initialize any gaps to default
// factory.
if (NodeType > (heteroList_.Length+1))
setMaxNodeType(NodeType);
// And add new thing..
if (heteroList_[NodeType] == null)
heteroList_[NodeType] = new FactoryEntry(creator);
else
heteroList_[NodeType].Creator = creator;
//typename2creator_[NodeType.ToString()] = creator;
typename2creator_[creator.ASTNodeTypeName] = creator;
}
/// <summary>
/// Register an ASTNodeCreator for a given Token type ID.
/// </summary>
/// <param name="NodeType">The Token type ID.</param>
/// <param name="NodeTypeName">The AST Node Type to register.</param>
public void setTokenTypeASTNodeCreator(int NodeType, ASTNodeCreator creator)
{
typename2creator_[NodeType.ToString()] = creator;
typename2creator_[creator.ASTNodeTypeName] = creator;
}
/// <summary>
/// Constructs an <c>ASTFactory</c> and use the specified AST node type
/// as the default.
/// </summary>
/// <param name="nodeTypeName">
/// Name of default AST node type for this factory.
/// </param>
public ASTFactory(string nodeTypeName)
{
heteroList_ = new FactoryEntry[Token.MIN_USER_TYPE+1];
defaultASTNodeTypeObject_ = loadNodeTypeObject(nodeTypeName);
defaultCreator_ = null;
typename2creator_ = new Hashtable(32, (float) 0.3);
typename2creator_["antlr.CommonAST"] = CommonAST.Creator;
typename2creator_["antlr.CommonASTWithHiddenTokens"] = CommonASTWithHiddenTokens.Creator;
}
