/// <summary>
/// Implements the visitor for a named color (<see cref="XshtdColor"/> object)
/// that is contained in a <see cref="XshtdSyntaxDefinition"/> object.
///
/// Method checks if given color name is unique and adds the color into the internal
/// collection of inique colors if it is.
/// </summary>
/// <param name="syntax"></param>
/// <param name="color"></param>
/// <returns>Always returns null. Throws a <see cref="HighlightingDefinitionInvalidException"/>
/// if color name is a duplicate.</returns>
public object VisitColor(XshtdSyntaxDefinition syntax, XshtdColor color)
{
if (color.Name != null)
{
if (color.Name.Length == 0)
{
throw Error(color, "Name must not be the empty string");
}
if (syntax == null)
{
throw Error(syntax, "Syntax Definition for theme must not be null");
}
SyntaxDefinition synDef;
if (def.syntaxDefDict.TryGetValue(syntax.Name, out synDef) == false)
{
throw Error(syntax, "Themed Syntax Definition does not exist '" + syntax.Name + "'.");
}
if (synDef.ColorGet(color.Name) == null)
{
synDef.ColorAdd(new HighlightingColor()
{
Name = color.Name
});
}
else
{
throw Error(color, "Duplicate color name '" + color.Name + "'.");
}
}
return(null);
}
/// <summary>
/// Implements the visitor for the <see cref="XshtdSyntaxDefinition"/> object.
/// </summary>
/// <param name="syntax"></param>
/// <returns></returns>
public object VisitSyntaxDefinition(XshtdSyntaxDefinition syntax)
{
SyntaxDefinition c;
if (syntax.Name != null)
{
c = def.syntaxDefDict[syntax.Name];
}
else
{
if (syntax.Extensions == null)
{
return(null);
}
else
{
c = new SyntaxDefinition(syntax.Name);
}
}
// Copy extensions to highlighting theme object
foreach (var item in syntax.Extensions)
{
c.Extensions.Add(item);
}
syntax.AcceptElements(this);
return(c);
}
/// <summary>
/// Implements the visitor for a named color (<see cref="XshtdColor"/> object)
/// that is contained in a <see cref="XshtdSyntaxDefinition"/> object.
/// </summary>
/// <param name="syntax"></param>
/// <param name="color"></param>
/// <returns></returns>
public object VisitColor(XshtdSyntaxDefinition syntax, XshtdColor color)
{
if (color.Name == null)
{
throw Error(color, "Name must not be null");
}
if (color.Name.Length == 0)
{
throw Error(color, "Name must not be the empty string");
}
if (syntax == null)
{
throw Error(syntax, "Syntax Definition for theme must not be null");
}
if (def.syntaxDefDict.TryGetValue(syntax.Name, out var synDef) == false)
{
throw Error(syntax, "Themed Syntax Definition does not exist '" + syntax.Name + "'.");
}
var highColor = synDef.ColorGet(color.Name);
if (highColor == null)
{
highColor = new HighlightingColor()
{
Name = color.Name
};
synDef.ColorAdd(highColor);
}
highColor.Foreground = color.Foreground;
highColor.Background = color.Background;
highColor.Underline = color.Underline;
highColor.FontStyle = color.FontStyle;
highColor.FontWeight = color.FontWeight;
return(highColor);
}
/// <summary>
/// Implements the visitor for the <see cref="XshtdSyntaxDefinition"/> object.
/// </summary>
/// <param name="syntax"></param>
/// <returns></returns>
public object VisitSyntaxDefinition(XshtdSyntaxDefinition syntax)
{
if (syntax.Name != null)
{
if (syntax.Name.Length == 0)
{
throw Error(syntax, "Name must not be the empty string");
}
if (def.syntaxDefDict.ContainsKey(syntax.Name))
{
throw Error(syntax, "Duplicate syntax definition name '" + syntax.Name + "'.");
}
def.syntaxDefDict.Add(syntax.Name, new SyntaxDefinition());
}
syntax.AcceptElements(this);
return(null);
}
/// <summary>
/// Creates a new XshdColor instance that is part of a <see cref="XshtdSyntaxDefinition"/>.
/// </summary>
public XshtdColor(XshtdSyntaxDefinition syntax)
{
_syntax = syntax;
}
