bool IsKeyword(LexerNode next)
{
var isKey = false;
switch (next.Token)
{
case LexerTokens.Keyword:
// ==== examples ==== //
//struct GSInputLS {}
//cbuffer ProjectionBuffer {}
// ==== ++++++++ ==== //
isKey = true;
break;
case LexerTokens.Identifier:
// ==== examples ==== //
//GSInputLS VShaderLines(VSInputLS input) {
// ==== ++++++++ ==== //
if (semantic.NewKeys.Contains(next.Value))
{
isKey = true;
}
break;
}
return(isKey);
}
public static void ThrowIfEmpty(this IEnumerable <LexerNode> lexers, LexerNode node)
{
if (!lexers.Any())
{
throw new SyntaxException(node);
}
}
public static void ThrowIfNot(this LexerNode node, LexerTokens token)
{
if (node.Token != token)
{
throw new SyntaxException(node);
}
}
public static void ThrowIfNot(this LexerNode node, string _case)
{
if (node.Value != _case)
{
throw new SyntaxException(node);
}
}
public void UpdateVariables(LexerNode typeLex, LexerNode nameLex)
{
var name = nameLex.Value;
UpdateVariables(nameLex);
var type = typeLex.Value;
if (!VariableTypesMapper.ContainsKey(name))
{
VariableTypesMapper.Add(name, type);
}
}
internal IDisposable RegisterStruct(LexerNode lexer, StructNode node)
{
if (!CanRegisterGlobalFunction())
{
throw new SemanticException($"Unavailable struct declaration '{lexer.Value}' inside another function '{currentRegistration.Name}'");
}
var str = new StructGloalObject {
Name = lexer, Node = node
};
global.Add(lexer.Value, str);
currentRegistration = new ScopeRegistration(lexer.Value, str);
return(currentRegistration);
}
internal IDisposable RegisterFunction(LexerNode lexer, FunctionDeclarationNode node)
{
if (!CanRegisterGlobalFunction())
{
throw new SemanticException($"Unavailable function declaration '{lexer.Value}' inside another function '{currentRegistration.Name}'");
}
var f = new FuncGloalObject {
Name = lexer, Node = node
};
global.Add(lexer.Value, f);
scopes.Add(lexer.Value, f);
currentRegistration = new ScopeRegistration(lexer.Value, f);
return(currentRegistration);
}
public void UpdateVariables(LexerNode nameLex)
{
var names = nameLex.Value.Split('.');
var offset = 0;
for (int i = 0; i < names.Length; i++)
{
var name = names[i];
if (!funcOrVarNameLexerMapper.TryGetValue(name, out var list))
{
list = new List <LexerNode>();
funcOrVarNameLexerMapper.Add(name, list);
}
list.Add(new LexerNode(nameLex.Token, name, nameLex.StartPointer.GetPositionAtOffset(offset)));
offset += name.Length + 1;//+1 is dot element
}
}
static void ApplyForegroundValue(LexerNode lexer)
{
var tp = lexer.StartPointer;
var range = new TextRange(tp, tp.GetPositionAtOffset(lexer.Value.Length));
Brush brush;
switch (lexer.Token)
{
case LexerTokens.Number:
brush = NumereticBrush;
break;
case LexerTokens.String:
brush = StringBrush;
break;
default:
return;
}
range.ApplyPropertyValue(TextElement.ForegroundProperty, brush);
}
Queue <LexerNode> SeparateExpression(Queue <LexerNode> lexers, out LexerNode op)
{
var left = new Queue <LexerNode>();
op = null;//custom.t = float2(dx / abs(dx), dy / abs(dy));
var bracket = 0;
while (lexers.Any())
{
var lex = lexers.Dequeue();
switch (lex.Token)
{
case LexerTokens.Punctuation:
switch (lex.Value)
{
case ShaderSyntaxInfo.StartFuncDeclaration:
bracket++;
break;
case ")":
bracket--;
break;
}
break;
case LexerTokens.Operator:
if (bracket == 0)
{
op = lex;
return(left);
}
break;
}
left.Enqueue(lex);
}
return(left);
}
static void ApplyFontWeight(LexerNode lexer, FontWeight ft)
{
GetRange(lexer).ApplyPropertyValue(TextElement.FontWeightProperty, ft);
}
protected override void OnIgnored(LexerNode lex)
{
Comments.Add(lex);
}
protected abstract void OnIgnored(LexerNode lex);
public SyntaxException(LexerNode current)
{
Lexer = current;
}
public void UnHighlightSelection(LexerNode lexer)
{
ApplyFontWeight(lexer, FontWeights.Normal);
//ApplyBackgroundValue(lexer, Brushes.Transparent);
}
protected Boundary DelimitedBy(Queue <LexerNode> lexer,
DelimeterParams _params,
ListNode node,
Func <Queue <LexerNode>, AbstractNode> parser)
{
var boundary = new Boundary();
boundary.StartPointer = lexer.Peek();
if (_params.IsStart != null && !_params.IsStart(lexer.Dequeue())) //incorect declaration
{
throw new SyntaxException(lexer.Peek());
}
var blocks = new Queue <LexerNode>();
LexerNode next = null;
var bracket = 1;
do
{
lexer.ThrowIfEmpty(next ?? boundary.StartPointer);
next = lexer.Dequeue();
if (next.Token == LexerTokens.Comment)
{
//OnIgnored(next);
node.Add(new CommentsNode()
{
Lex = next
});
continue;
}
if (_params.IsStart != null && _params.IsStart(next))
{
bracket++;
}
if ((_params.IsSeparator(next) && bracket == 1) || !lexer.Any())
{
if (blocks.Any())
{
node.Add(parser(blocks));
blocks.ThrowIfAny();
}
continue;
}
if (_params.IsStop(next))
{
bracket--;
if (bracket == 0)
{
if (blocks.Any())
{
node.Add(parser(blocks));
blocks.ThrowIfAny();
}
}
}
blocks.Enqueue(next);
} while (bracket != 0 && lexer.Any());
boundary.EndPointer = next;
return(boundary);
}
static void ApplyBackgroundValue(LexerNode lexer, Brush brush)
{
GetRange(lexer).ApplyPropertyValue(TextElement.BackgroundProperty, brush);
}
public static void ThrowSyntaxException(this LexerNode node)
{
throw new SyntaxException(node);
}
static TextRange GetRange(LexerNode lexer)
{
var tp = lexer.StartPointer;
return(new TextRange(tp, tp.GetTextPointAt(lexer.Value.Length)));// tp.GetPositionAtOffset(lexer.Value.Length));
}
public bool IsSemicolon(LexerNode lex)
{
return(Semicolon == lex.Value);
}
public void HighlightSelection(LexerNode lexer)
{
ApplyFontWeight(lexer, FontWeights.Bold);
//ApplyBackgroundValue(lexer, Brushes.LightBlue);
}