protected void VisitUrlFunction(PrimitiveTerm term)
{
string path = (string)term.Value;
string projectRelativePath, errorMessage;
URIValidationResult result = URIHelpers.ValidAssetURL(assetPath, path, out errorMessage, out projectRelativePath);
if (result != URIValidationResult.OK)
{
m_Builder.AddValue(path, StyleValueType.MissingAssetReference);
m_Errors.AddValidationWarning(errorMessage, m_Builder.currentProperty.line);
}
else
{
UnityEngine.Object asset = DeclareDependencyAndLoad(projectRelativePath);
bool isTexture = asset is Texture2D;
if (isTexture || asset is Font || asset is VectorImage)
{
// Looking suffixed images files only
if (isTexture)
{
string hiResImageLocation = URIHelpers.InjectFileNameSuffix(projectRelativePath, "@2x");
if (File.Exists(hiResImageLocation))
{
UnityEngine.Object hiResImage = DeclareDependencyAndLoad(hiResImageLocation);
if (hiResImage is Texture2D)
{
m_Builder.AddValue(new ScalableImage()
{
normalImage = asset as Texture2D, highResolutionImage = hiResImage as Texture2D
});
}
else
{
m_Errors.AddSemanticError(StyleSheetImportErrorCode.InvalidHighResolutionImage, string.Format("Invalid asset type {0}, only Texture2D is supported for variants with @2x suffix", asset.GetType().Name));
}
return;
}
// If we didn't find an high res variant, tell ADB we depend on that potential file existing
DeclareDependencyAndLoad(hiResImageLocation);
}
m_Builder.AddValue(asset);
}
else
{
m_Errors.AddSemanticError(StyleSheetImportErrorCode.InvalidURIProjectAssetType, string.Format("Invalid asset type {0}, only Font, Texture2D and VectorImage are supported", asset.GetType().Name));
}
}
}
private bool ValidateFunction(GenericFunction term, out StyleValueFunction func)
{
func = StyleValueFunction.Unknown;
if (term.Arguments.Length == 0)
{
m_Errors.AddSemanticError(StyleSheetImportErrorCode.MissingFunctionArgument, term.Name);
return(false);
}
if (term.Name == k_VariableFunctionName)
{
func = StyleValueFunction.Var;
return(ValidateVarFunction(term));
}
try
{
func = StyleValueFunctionExtension.FromUssString(term.Name);
}
catch (Exception)
{
var prop = m_Builder.currentProperty;
m_Errors.AddValidationWarning($"Unknown function {term.Name} in declaration {prop.name}: {term.Name}", prop.line);
return(false);
}
return(true);
}
