public override void VisitExpressionVariable(ExpressionVariable expressionVariable)
{
if (!expressionVariable.IsBound)
{
sb.AppendFormat("new ExpressionVariable(\"{0}\")", expressionVariable.Index);
}
else
{
sb.AppendFormat("pattern{0}.GetVariable(\"{1}\")", currentPatternIndex, expressionVariable.Index);
}
}
public static void CreateVariableNode(AstContext context, ParseTreeNode parseNode)
{
Variable varNode = null;
foreach (ParseTreeNode nt in parseNode.ChildNodes)
{
// (e | s | t)
if (varNode == null)
{
switch (nt.Term.Name)
{
case "s":
varNode = new SymbolVariable();
break;
case "e":
varNode = new ExpressionVariable();
break;
case "t":
varNode = new TermVariable();
break;
default:
throw new ArgumentOutOfRangeException("Unknown variable type: " + nt.Term.Name);
}
continue;
}
if (nt.Term.Name == ".")
{
continue;
}
// Number | Identifier
if (nt.AstNode is LiteralValueNode)
{
varNode.Index = (nt.AstNode as LiteralValueNode).Value.ToString();
}
else if (nt.AstNode is IdentifierNode)
{
varNode.Index = (nt.AstNode as IdentifierNode).Symbol;
}
}
varNode.Span = parseNode.Span;
varNode.AsString = varNode.Index;
parseNode.AstNode = varNode;
}
public static void CreateVariableNode(ParsingContext context, ParseTreeNode parseNode)
{
Variable varNode = null;
foreach (ParseTreeNode nt in parseNode.ChildNodes)
{
// (e | s | t)
if (varNode == null)
{
switch (nt.Term.Name)
{
case "s":
varNode = new SymbolVariable();
break;
case "e":
varNode = new ExpressionVariable();
break;
case "t":
varNode = new TermVariable();
break;
default:
throw new ArgumentOutOfRangeException("Unknown variable type: " + nt.Term.Name);
}
continue;
}
if (nt.Term.Name == ".")
continue;
// Number | Identifier
if (nt.AstNode is LiteralValueNode)
{
varNode.Index = (nt.AstNode as LiteralValueNode).Value.ToString();
}
else if (nt.AstNode is IdentifierNode)
{
varNode.Index = (nt.AstNode as IdentifierNode).Symbol;
}
}
varNode.Span = parseNode.Span;
varNode.AsString = varNode.Index;
parseNode.AstNode = varNode;
}
static void Variable(out Variable variable)
{
variable = null;
if (la.kind == 31)
{
Get();
variable = new ExpressionVariable();
}
else if (la.kind == 32)
{
Get();
variable = new SymbolVariable();
}
else if (la.kind == 33)
{
Get();
variable = new TermVariable();
}
else
{
SynErr(40);
}
if (la.kind == 4)
{
Get();
}
else if (la.kind == 1)
{
Get();
}
else
{
SynErr(41);
}
if (variable != null)
{
variable.Index = t.val;
}
}
public override void VisitExpressionVariable(ExpressionVariable expressionVariable)
{
sb.Append("e.");
sb.Append(expressionVariable.Index);
}
public abstract void VisitExpressionVariable(ExpressionVariable expressionVariable);
public override void VisitExpressionVariable(ExpressionVariable expressionVariable)
{
throw new NotImplementedException();
}