public BlockNode(string blockName, AttributeNodeList attributes, ParameterNodeList parameterNodes, BlockNodeList children)
: this(blockName, attributes, parameterNodes)
{
if (children != null)
{
foreach (var child in children)
{
Children.Add(child);
}
}
}
public bool Parse(StringReader sourceReader, out Document document)
{
_parser = ParserFactory.CreateParser(sourceReader);
_parser.TrimReductions = true;
_context = new ParserContext(_parser);
document = null;
while (true)
{
switch (_parser.Parse())
{
case ParseMessage.LexicalError:
_errorString = string.Format("Lexical Error. Line {0}. Token {1} was not expected.", _parser.LineNumber, _parser.TokenText);
return false;
case ParseMessage.SyntaxError:
StringBuilder text = new StringBuilder();
foreach (Symbol tokenSymbol in _parser.GetExpectedTokens())
{
text.Append(' ');
text.Append(tokenSymbol.ToString());
}
_errorString = string.Format("Syntax Error. Line {0}. Expecting: {1}.", _parser.LineNumber, text);
return false;
case ParseMessage.Reduction:
_parser.TokenSyntaxNode = _context.CreateASTNode();
break;
case ParseMessage.Accept:
var result = _parser.TokenSyntaxNode as BlockNodeList;
if (result == null)
{
result = new BlockNodeList(_parser.TokenSyntaxNode as BlockNode);
}
document = new Document
{
Children = result
};
_errorString = null;
return true;
case ParseMessage.TokenRead:
//=== Make sure that we store token string for needed tokens.
_parser.TokenSyntaxNode = _context.GetTokenText();
break;
case ParseMessage.InternalError:
_errorString = "Internal Error. Something is horribly wrong.";
return false;
case ParseMessage.NotLoadedError:
_errorString = "Grammar Table is not loaded.";
return false;
case ParseMessage.CommentError:
_errorString = "Comment Error. Unexpected end of input.";
return false;
case ParseMessage.CommentBlockRead:
case ParseMessage.CommentLineRead:
// don't do anything
break;
}
}
}
public AbstractNode CreateASTNode()
{
AttributeNodeList idClassAttributes;
AttributeNodeList attributes;
ParameterNodeList parameter;
BlockNodeList children;
switch (_parser.ReductionRule.Index)
{
case (int)RuleConstants.RULE_PARAMETERS_LPARAN_RPARAN:
// <Parameters> ::= '(' <Parameter List> ')'
var parameters = _parser.GetReductionSyntaxNode(1) as ParameterNodeList;
if (parameters == null)
{
parameters = new ParameterNodeList(_parser.GetReductionSyntaxNode(1) as ParameterNode);
}
return parameters;
case (int)RuleConstants.RULE_PARAMETER_STRINGLITERAL:
case (int)RuleConstants.RULE_PARAMETER_IDENTIFIER:
//<Parameter> ::= StringLiteral
//<Parameter> ::= Identifier
return new ParameterNode(Token(0));
case (int)RuleConstants.RULE_PARAMETERLIST:
// <Parameter List> ::= <Parameter>
if (_parser.ReductionCount > 0)
{
return new ParameterNodeList(new ParameterNode(Token(0)));
}
return null;
case (int)RuleConstants.RULE_PARAMETERLIST2:
// <Parameter List> ::= <Parameter List> <Parameter>
var parameterList = _parser.GetReductionSyntaxNode(0) as ParameterNodeList;
if (parameterList == null)
{
parameterList = new ParameterNodeList(_parser.GetReductionSyntaxNode(0) as ParameterNode);
}
return new ParameterNodeList(parameterList, _parser.GetReductionSyntaxNode(1) as ParameterNode);
case (int)RuleConstants.RULE_PARAMETERS:
//<Parameter> ::=
//empty parameter list
return null;
case (int)RuleConstants.RULE_ATTRIBUTE_IDENTIFIER:
// <Attribute> ::= Identifier
return new AttributeNode(Token(0), null);
case (int)RuleConstants.RULE_ATTRIBUTE_IDENTIFIER_EQ_STRINGLITERAL:
//<Attribute> ::= Identifier '=' StringLiteral
return new AttributeNode(Token(0), Token(2));
case (int)RuleConstants.RULE_ATTRIBUTE_IDENTIFIER_EQ_IDENTIFIER:
//<Attribute> ::= Identifier '=' Identifier
return new AttributeNode(Token(0), Token(2));
case (int)RuleConstants.RULE_ATTRIBUTELIST:
//<Attribute List> ::= <Attribute>
if (_parser.ReductionCount > 0)
{
return new AttributeNodeList(_parser.GetReductionSyntaxNode(0) as AttributeNode);
}
return null;
case (int)RuleConstants.RULE_ATTRIBUTELIST2:
//<Attribute List> ::= <Attribute List> ',' <Attribute>
var attributeList = _parser.GetReductionSyntaxNode(0) as AttributeNodeList;
if (attributeList == null)
{
attributeList = new AttributeNodeList(_parser.GetReductionSyntaxNode(0) as AttributeNode);
}
return new AttributeNodeList(attributeList, _parser.GetReductionSyntaxNode(1) as AttributeNode);
case (int)RuleConstants.RULE_ATTRIBUTES_LBRACKET_RBRACKET:
//<Attributes> ::= '[' <Attribute List> ']'
var attributeNodeList = _parser.GetReductionSyntaxNode(1) as AttributeNodeList;
if (attributeNodeList == null)
{
attributeNodeList = new AttributeNodeList(_parser.GetReductionSyntaxNode(1) as AttributeNode);
}
return attributeNodeList;
case (int)RuleConstants.RULE_ATTRIBUTES:
//<Attributes> ::=
// empty attribute list
return null;
case (int)RuleConstants.RULE_CLASSES_CLASSIDENTIFIER:
//<Classes> ::= ClassIdentifier
return new AttributeNodeList(new AttributeNode("class", Token(0).Substring(1)));
case (int)RuleConstants.RULE_CLASSES_CLASSIDENTIFIER2:
//<Classes> ::= ClassIdentifier <Classes>
return new AttributeNodeList(_parser.GetReductionSyntaxNode(1) as AttributeNodeList, new AttributeNode("class", Token(0).Substring(1)));
case (int)RuleConstants.RULE_IDCLASS_HTMLIDENTIFIER:
//<IdClass> ::= HtmlIdentifier
if (_parser.ReductionCount > 0)
{
var id = Token(0);
if (id.StartsWith("#"))
{
id = id.Substring(1);
}
return new AttributeNodeList(new AttributeNode("id", id));
}
return null;
case (int)RuleConstants.RULE_IDCLASS_HTMLIDENTIFIER2:
//<IdClass> ::= HtmlIdentifier <Classes>
return new AttributeNodeList(_parser.GetReductionSyntaxNode(1) as AttributeNodeList, new AttributeNode("id", Token(0).Substring(1)));
case (int)RuleConstants.RULE_IDCLASS:
//<IdClass> ::= <Classes>
return new AttributeNodeList(_parser.GetReductionSyntaxNode(0) as AttributeNodeList);
case (int)RuleConstants.RULE_IDCLASS2:
//<IdClass> ::=
// empty id class
return null;
#region " Statements "
case (int)RuleConstants.RULE_STATEMENTS:
{
//<Statements> ::= <Statement>
return new BlockNodeList(new[] { _parser.GetReductionSyntaxNode(0) as BlockNode });
}
case (int)RuleConstants.RULE_STATEMENTS2:
{
//<Statements> ::= <Statements> <Statement>
var elements = _parser.GetReductionSyntaxNode(0) as BlockNodeList;
if (elements == null)
{
elements = new BlockNodeList(_parser.GetReductionSyntaxNode(0) as BlockNode);
}
return new BlockNodeList(elements, _parser.GetReductionSyntaxNode(1) as BlockNode);
}
case (int)RuleConstants.RULE_STATEMENT_IDENTIFIER_SEMI:
{
// <Statement> ::= Identifier <IdClass> <Attributes> <Parameter> ':' <Statement>
idClassAttributes = _parser.GetReductionSyntaxNode(1) as AttributeNodeList;
attributes = _parser.GetReductionSyntaxNode(2) as AttributeNodeList;
parameter = _parser.GetReductionSyntaxNode(3) as ParameterNodeList;
children = _parser.GetReductionSyntaxNode(5) as BlockNodeList;
if (children == null)
{
children = new BlockNodeList(_parser.GetReductionSyntaxNode(5) as BlockNode);
}
return new BlockNode(
Token(0),
MergeAttributeNodes(attributes, idClassAttributes),
parameter,
children
);
}
case (int)RuleConstants.RULE_STATEMENT_STRINGLITERALPIPE:
return new StringLiteralNode(Token(1));
case (int)RuleConstants.RULE_STATEMENT_IDENTIFIER_LBRACE_RBRACE:
//<Statement> ::= Identifier <IdClass> <Attributes> <Parameter> '{' <Statements> '}'
idClassAttributes = _parser.GetReductionSyntaxNode(1) as AttributeNodeList;
attributes = _parser.GetReductionSyntaxNode(2) as AttributeNodeList;
parameter = _parser.GetReductionSyntaxNode(3) as ParameterNodeList;
children = _parser.GetReductionSyntaxNode(5) as BlockNodeList;
if (children == null)
{
children = new BlockNodeList(_parser.GetReductionSyntaxNode(5) as BlockNode);
}
return new BlockNode(
Token(0),
MergeAttributeNodes(attributes, idClassAttributes),
parameter,
children
);
case (int)RuleConstants.RULE_STATEMENT_STRINGLITERAL:
case (int)RuleConstants.RULE_STATEMENT_MULTILINESTRINGLITERAL:
//<Statement> ::= StringLiteral
//<Statement> ::= MultiLineStringLiteral
return new StringLiteralNode(Token(0));
case (int)RuleConstants.RULE_STATEMENT_IDENTIFIER_LBRACE_RBRACE2:
// <Statement> ::= Identifier <IdClass> <Attributes> <Parameters> '{' '}'
return new BlockNode(
Token(0),
MergeAttributeNodes(_parser.GetReductionSyntaxNode(1) as AttributeNodeList, _parser.GetReductionSyntaxNode(2) as AttributeNodeList),
_parser.GetReductionSyntaxNode(3) as ParameterNodeList,
_parser.GetReductionSyntaxNode(5) as BlockNodeList
);
case (int)RuleConstants.RULE_STATEMENT_IDENTIFIER:
// <Statement> ::= Identifier EndOfLineOrFile
return new BlockNode(
Token(0),
MergeAttributeNodes(_parser.GetReductionSyntaxNode(1) as AttributeNodeList, _parser.GetReductionSyntaxNode(2) as AttributeNodeList),
_parser.GetReductionSyntaxNode(3) as ParameterNodeList
);
case (int)RuleConstants.RULE_OUTPUTSTATEMENT_COLON_IDENTIFIER:
// <OutputStatement> ::= ':' Identifier
return new RawOutputNode(Token(1));
case (int)RuleConstants.RULE_OUTPUTSTATEMENT_EQ_IDENTIFIER:
// <OutputStatement> ::= '=' Identifier
return new OutputNode(Token(1));
#endregion
default:
throw new RuleException("Unknown rule: Does your CGT Match your Code Revision?");
}
}
public Document()
{
Children = new BlockNodeList();
}
