/// <summary>
/// Check for any inline "out" variable declarations in this statement - i.e. MyFunc(out var result) -
/// and declare those variables now.
/// </summary>
private string DeclareInlineOutVariables(StatementSyntax statement)
{
StringBuilder sb = new StringBuilder();
IEnumerable <SyntaxNode> declarationExpressionNodes = statement
.DescendantNodes(x => !x.IsKind(SyntaxKind.Block)) // Don't descend into child blocks
.Where(x => x.IsKind(SyntaxKind.DeclarationExpression));
foreach (DeclarationExpressionSyntax declarationExpressionNode in declarationExpressionNodes)
{
string varType = _compilation.GetSemanticModel(declarationExpressionNode.Type.SyntaxTree).GetFullTypeName(declarationExpressionNode.Type);
string mappedType = _backend.CSharpToShaderType(varType);
sb.Append(" ");
sb.Append(mappedType);
sb.Append(' ');
switch (declarationExpressionNode.Designation)
{
case SingleVariableDesignationSyntax svds:
string identifier = _backend.CorrectIdentifier(svds.Identifier.Text);
sb.Append(identifier);
sb.Append(';');
sb.AppendLine();
break;
default:
throw new NotImplementedException($"{declarationExpressionNode.Designation.GetType()} designations are not implemented.");
}
}
return(sb.ToString());
}
public override string VisitIdentifierName(IdentifierNameSyntax node)
{
SymbolInfo symbolInfo = GetModel(node).GetSymbolInfo(node);
ISymbol symbol = symbolInfo.Symbol;
string containingTypeName = Utilities.GetFullName(symbolInfo.Symbol.ContainingType);
if (containingTypeName == "ShaderGen.ShaderBuiltins")
{
TryRecognizeBuiltInVariable(symbolInfo);
}
if (symbol.Kind == SymbolKind.Field && containingTypeName == _containingTypeName)
{
string symbolName = symbol.Name;
ResourceDefinition referencedResource = _backend.GetContext(_setName).Resources.Single(rd => rd.Name == symbolName);
_resourcesUsed.Add(referencedResource);
_shaderFunction.UsesTexture2DMS |= referencedResource.ValueType.Name == "ShaderGen.Texture2DMSResource";
return(_backend.CorrectFieldAccess(symbolInfo));
}
else if (symbol.Kind == SymbolKind.Property)
{
return(_backend.FormatInvocation(_setName, containingTypeName, symbol.Name, Array.Empty <InvocationParameterInfo>()));
}
string mapped = _backend.CSharpToShaderIdentifierName(symbolInfo);
return(_backend.CorrectIdentifier(mapped));
}
public override string VisitIdentifierName(IdentifierNameSyntax node)
{
SymbolInfo symbolInfo = GetModel(node).GetSymbolInfo(node);
ISymbol symbol = symbolInfo.Symbol;
string containingTypeName = Utilities.GetFullName(symbolInfo.Symbol.ContainingType);
if (symbol.Kind == SymbolKind.Field && containingTypeName == _containingTypeName)
{
return(_backend.CorrectFieldAccess(symbolInfo));
}
string mapped = _backend.CSharpToShaderIdentifierName(symbolInfo);
return(_backend.CorrectIdentifier(mapped));
}
public override string VisitIdentifierName(IdentifierNameSyntax node)
{
SymbolInfo symbolInfo = GetModel(node).GetSymbolInfo(node);
ISymbol symbol = symbolInfo.Symbol;
string containingTypeName = Utilities.GetFullName(symbolInfo.Symbol.ContainingType);
if (containingTypeName == "ShaderGen.ShaderBuiltins")
{
TryRecognizeBuiltInVariable(symbolInfo);
}
if (symbol.Kind == SymbolKind.Field && containingTypeName == _containingTypeName)
{
return(_backend.CorrectFieldAccess(symbolInfo));
}
else if (symbol.Kind == SymbolKind.Property)
{
return(_backend.FormatInvocation(_setName, containingTypeName, symbol.Name, Array.Empty <InvocationParameterInfo>()));
}
string mapped = _backend.CSharpToShaderIdentifierName(symbolInfo);
return(_backend.CorrectIdentifier(mapped));
}
