public IEnumerable <IExpressionToken> Compile(IExpressionItem item)
{
if (item is null || item.Childs.IsNullOrEmpty())
{
throw new CompileException($"Expression item is null or item do not has any childs. Expression: {item.Expression}", typeof(FunctionCompiler));
}
return(Compile(item.Childs));
}
public IEnumerable <IExpressionToken> Compile(IExpressionItem item)
{
if (item is null)
{
throw new CompileException("Expression item is null.", typeof(StringCompiler <T>));
}
return(Compile(item.Expression));
}
/// <summary>
/// Indicates that the given item is the next expected, giving it a
/// name and specifying whether it is required.
/// </summary>
/// <param name="itemName">The name that the token will be identified with in the outer expression.</param>
/// <param name="item">The expression item to add to the sequence.</param>
/// <returns>The updated expression.</returns>
public Options Add(string itemName, IExpressionItem item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
options.Add(new ExpressionItem(itemName, false, item));
return this;
}
/// <summary>
/// Indicates that the given item is the next expected, giving it a
/// name and specifying whether it is required.
/// </summary>
/// <param name="itemName">The name that the token will be identified with in the outer expression.</param>
/// <param name="item">The expression item to add to the sequence.</param>
/// <returns>The updated expression.</returns>
public Options Add(string itemName, IExpressionItem item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
options.Add(new ExpressionItem(itemName, false, item));
return(this);
}
public override object CreateNewInstance(SelectItem item)
{
IExpressionItem expressionItem = item.Value as IExpressionItem;
Debug.Assert(expressionItem != null);
ActivityFactory factory = Parent.EditingContext.Services.GetService <ActivityFactory>();
Debug.Assert(factory != null);
object instance = factory.CreateActivity(expressionItem.CreateActivity, Parent.GetModelProperty());
Type argumentType = typeof(InArgument <>).MakeGenericType(expressionItem.ValueType);
InArgument arg = Activator.CreateInstance(argumentType, instance) as InArgument;
return(arg);
}
public IEnumerable <IExpressionItem> ExpressionStructure(string value)
{
IExpressionItem[] result = null;
if (IsExpression(value))
{
var resultItem = new GrammarExpressionItem()
{
Item = this,
Expression = value
};
result = new IExpressionItem[] { resultItem };
}
return(result);
}
public IEnumerable <IExpressionItem> ExpressionStructure(string value)
{
IExpressionItem[] result = null;
if (this._rightSide == null)
{
throw new GrammarParseException($"Right side rule of NonTerminal: {this.Name} is null.", new NullReferenceException());
}
if (IsExpression(value))
{
result = new IExpressionItem[]
{
new GrammarExpressionItem()
{
Item = this,
Expression = value,
Childs = this._rightSide.ExpressionStructure(value)
}
};
}
return(result);
}
/// <summary>
/// Initializes a new instance of an ExpressionItem.
/// </summary>
/// <param name="itemName">The name of the item.</param>
/// <param name="isRequired">Specifies whether the item missing results in the outer expression not matching.</param>
/// <param name="item">The actual item that is expected.</param>
public ExpressionItem(string itemName, bool isRequired, IExpressionItem item)
{
ItemName = itemName;
IsRequired = isRequired;
Item = item;
}
/// <summary>
/// Initializes a new instance of an ExpressionItem.
/// </summary>
/// <param name="itemName">The name of the item.</param>
/// <param name="isRequired">Specifies whether the item missing results in the outer expression not matching.</param>
/// <param name="item">The actual item that is expected.</param>
public ExpressionItem(string itemName, bool isRequired, IExpressionItem item)
{
ItemName = itemName;
IsRequired = isRequired;
Item = item;
}
public override IEnumerable <IExpressionToken> Compile(IExpressionItem item)
{
return(Compile(item.Expression));
}
public IEnumerable <IExpressionToken> Compile(IExpressionItem item)
{
return(((ICompiler)this.Rule).Compile(item));
}
