static void AddDependency(string assetPath, XElement templateNode, List <string> dependencies)
{
bool hasSrc = false;
string src = null;
foreach (var xAttribute in templateNode.Attributes())
{
switch (xAttribute.Name.LocalName)
{
case k_GenericSrcAttr:
hasSrc = true;
src = xAttribute.Value;
break;
}
}
if (hasSrc)
{
string errorMessage, projectRelativePath;
URIValidationResult result = URIHelpers.ValidAssetURL(assetPath, src, out errorMessage, out projectRelativePath);
if (result == URIValidationResult.OK)
{
dependencies.Add(projectRelativePath);
}
}
}
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_Errors.AddSemanticError(ConvertErrorCode(result), errorMessage);
}
else
{
UnityEngine.Object asset = DeclareDependencyAndLoad(projectRelativePath);
if (asset is Texture2D || asset is Font)
{
m_Builder.AddValue(asset);
}
else
{
m_Errors.AddSemanticError(StyleSheetImportErrorCode.InvalidURIProjectAssetType, string.Format("Invalid asset type {0}, only Font and Texture2D are supported", asset.GetType().Name));
}
}
}
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));
}
}
}
static void AddDependency(string assetPath, XElement templateNode, List <string> dependencies)
{
bool hasSrc = false;
string src = null;
foreach (var xAttribute in templateNode.Attributes())
{
switch (xAttribute.Name.LocalName)
{
case k_GenericSrcAttr:
hasSrc = true;
src = xAttribute.Value;
break;
}
}
if (!hasSrc)
{
return;
}
URIValidationResult result = URIHelpers.ValidAssetURL(assetPath, src, out string errorMessage, out string projectRelativePath);
if (result != URIValidationResult.OK)
{
return;
}
switch (templateNode.Name.LocalName)
{
case k_TemplateNode:
var templateDependencies = new HashSet <string>();
templateDependencies.Add(assetPath);
if (!HasTemplateCircularDependencies(projectRelativePath, templateDependencies))
{
dependencies.Add(projectRelativePath);
}
else
{
logger.LogError(ImportErrorType.Semantic, ImportErrorCode.TemplateHasCircularDependency, projectRelativePath, Error.Level.Warning, templateNode);
}
break;
default:
dependencies.Add(projectRelativePath);
break;
}
}
void LoadStyleReferenceNode(VisualElementAsset vea, XElement styleElt, VisualTreeAsset vta)
{
XAttribute pathAttr = styleElt.Attribute(k_GenericPathAttr);
bool hasPath = pathAttr != null && !String.IsNullOrEmpty(pathAttr.Value);
XAttribute srcAttr = styleElt.Attribute(k_GenericSrcAttr);
bool hasSrc = srcAttr != null && !String.IsNullOrEmpty(srcAttr.Value);
if (hasPath == hasSrc)
{
LogWarning(vta,
ImportErrorType.Semantic,
hasPath ? ImportErrorCode.StyleReferenceSrcAndPathBothSpecified : ImportErrorCode.StyleReferenceEmptyOrMissingPathOrSrcAttr,
null,
styleElt);
return;
}
if (hasPath)
{
vea.stylesheetPaths.Add(pathAttr.Value);
}
else if (hasSrc)
{
string errorMessage, projectRelativePath;
URIValidationResult result = URIHelpers.ValidAssetURL(assetPath, srcAttr.Value, out errorMessage, out projectRelativePath);
if (result != URIValidationResult.OK)
{
LogError(vta, ImportErrorType.Semantic, ConvertErrorCode(result), errorMessage, styleElt);
}
else
{
Object asset = DeclareDependencyAndLoad(projectRelativePath);
if (asset is StyleSheet)
{
vea.stylesheets.Add(asset as StyleSheet);
}
else
{
LogError(vta, ImportErrorType.Semantic, ImportErrorCode.ReferenceInvalidAssetType, projectRelativePath, styleElt);
}
}
}
}
static ImportErrorCode ConvertErrorCode(URIValidationResult result)
{
switch (result)
{
case URIValidationResult.InvalidURILocation:
return(ImportErrorCode.ReferenceInvalidURILocation);
case URIValidationResult.InvalidURIScheme:
return(ImportErrorCode.ReferenceInvalidURIScheme);
case URIValidationResult.InvalidURIProjectAssetPath:
return(ImportErrorCode.ReferenceInvalidURIProjectAssetPath);
default:
throw new ArgumentOutOfRangeException(result.ToString());
}
}
static protected StyleSheetImportErrorCode ConvertErrorCode(URIValidationResult result)
{
switch (result)
{
case URIValidationResult.InvalidURILocation:
return(StyleSheetImportErrorCode.InvalidURILocation);
case URIValidationResult.InvalidURIScheme:
return(StyleSheetImportErrorCode.InvalidURIScheme);
case URIValidationResult.InvalidURIProjectAssetPath:
return(StyleSheetImportErrorCode.InvalidURIProjectAssetPath);
default:
return(StyleSheetImportErrorCode.Internal);
}
}
internal static (StyleSheetImportErrorCode, string) ConvertErrorCode(URIValidationResult result)
{
switch (result)
{
case URIValidationResult.InvalidURILocation:
return(StyleSheetImportErrorCode.InvalidURILocation, glossary.invalidUriLocation);
case URIValidationResult.InvalidURIScheme:
return(StyleSheetImportErrorCode.InvalidURIScheme, glossary.invalidUriScheme);
case URIValidationResult.InvalidURIProjectAssetPath:
return(StyleSheetImportErrorCode.InvalidURIProjectAssetPath, glossary.invalidAssetPath);
default:
return(StyleSheetImportErrorCode.Internal, glossary.internalErrorWithStackTrace);
}
}
internal static bool HasTemplateCircularDependencies(XElement templateElement, HashSet <string> templateDependencies, string rootAssetPath)
{
bool hasCircularDependencies = false;
var elements = templateElement.Elements();
foreach (var child in elements)
{
switch (child.Name.LocalName)
{
case k_TemplateNode:
var attributes = child.Attributes();
foreach (var xAttribute in attributes)
{
if (xAttribute.Name.LocalName != k_GenericSrcAttr)
{
continue;
}
var src = xAttribute.Value;
URIValidationResult result = URIHelpers.ValidAssetURL(rootAssetPath, src, out string errorMessage, out string projectRelativePath);
hasCircularDependencies = HasTemplateCircularDependencies(projectRelativePath, templateDependencies);
if (!hasCircularDependencies)
{
templateDependencies.Remove(projectRelativePath);
}
}
break;
default:
hasCircularDependencies = HasTemplateCircularDependencies(child, templateDependencies, rootAssetPath);
break;
}
if (hasCircularDependencies)
{
break;
}
}
return(hasCircularDependencies);
}
void LoadTemplateNode(VisualTreeAsset vta, XElement elt, XElement child)
{
bool hasPath = false;
bool hasSrc = false;
string name = null;
string path = null;
string src = null;
foreach (var xAttribute in child.Attributes())
{
switch (xAttribute.Name.LocalName)
{
case k_GenericPathAttr:
hasPath = true;
path = xAttribute.Value;
break;
case k_GenericSrcAttr:
hasSrc = true;
src = xAttribute.Value;
break;
case k_TemplateNameAttr:
name = xAttribute.Value;
if (String.IsNullOrEmpty(name))
{
logger.LogError(ImportErrorType.Semantic,
ImportErrorCode.TemplateHasEmptyName,
child,
Error.Level.Fatal,
child
);
}
break;
default:
logger.LogError(ImportErrorType.Semantic,
ImportErrorCode.UnknownAttribute,
xAttribute.Name.LocalName,
Error.Level.Fatal,
child
);
break;
}
}
if (hasPath == hasSrc)
{
logger.LogError(ImportErrorType.Semantic,
hasPath ? ImportErrorCode.TemplateSrcAndPathBothSpecified : ImportErrorCode.TemplateMissingPathOrSrcAttribute,
null,
Error.Level.Fatal,
elt
);
return;
}
if (String.IsNullOrEmpty(name))
{
name = Path.GetFileNameWithoutExtension(path);
}
if (vta.TemplateExists(name))
{
logger.LogError(ImportErrorType.Semantic,
ImportErrorCode.DuplicateTemplateName,
name,
Error.Level.Fatal,
elt
);
return;
}
if (hasPath)
{
vta.RegisterTemplate(name, path);
}
else if (hasSrc)
{
string errorMessage, projectRelativePath;
URIValidationResult result = URIHelpers.ValidAssetURL(assetPath, src, out errorMessage, out projectRelativePath);
if (result != URIValidationResult.OK)
{
logger.LogError(ImportErrorType.Semantic, ConvertErrorCode(result), errorMessage, Error.Level.Fatal, elt);
}
else
{
Object asset = DeclareDependencyAndLoad(projectRelativePath);
if (asset is VisualTreeAsset)
{
vta.RegisterTemplate(name, asset as VisualTreeAsset);
}
else
{
logger.LogError(ImportErrorType.Semantic, ImportErrorCode.ReferenceInvalidAssetType, projectRelativePath, Error.Level.Fatal, elt);
}
}
}
}
protected void ImportParserStyleSheet(UnityStyleSheet asset, ParserStyleSheet styleSheet)
{
m_Errors.assetPath = assetPath;
if (styleSheet.Errors.Count > 0)
{
foreach (StylesheetParseError error in styleSheet.Errors)
{
m_Errors.AddSyntaxError(error.ToString());
}
}
else
{
try
{
VisitSheet(styleSheet);
}
catch (Exception exc)
{
Debug.LogException(exc);
m_Errors.AddInternalError(exc.StackTrace);
}
}
bool success = !m_Errors.hasErrors;
if (success)
{
m_Builder.BuildTo(asset);
if (!s_StyleSheetsWithCircularImportDependencies.Contains(assetPath))
{
var importDirectivesCount = styleSheet.ImportDirectives.Count;
asset.imports = new UnityStyleSheet.ImportStruct[importDirectivesCount];
for (int i = 0; i < importDirectivesCount; ++i)
{
var importedPath = styleSheet.ImportDirectives[i].Href;
string projectRelativePath, errorMessage;
URIValidationResult importResult = URIHelpers.ValidAssetURL(assetPath, importedPath, out errorMessage, out projectRelativePath);
UnityStyleSheet importedStyleSheet = null;
if (importResult != URIValidationResult.OK)
{
m_Errors.AddSemanticError(ConvertErrorCode(importResult), errorMessage);
}
else
{
importedStyleSheet = DeclareDependencyAndLoad(projectRelativePath) as UnityStyleSheet;
m_Context.DependsOnImportedAsset(projectRelativePath);
}
asset.imports[i] = new UnityStyleSheet.ImportStruct
{
styleSheet = importedStyleSheet,
mediaQueries = styleSheet.ImportDirectives[i].Media.ToArray()
};
}
if (importDirectivesCount > 0)
{
asset.FlattenImportedStyleSheetsRecursive();
}
}
else
{
asset.imports = new UnityStyleSheet.ImportStruct[0];
var errorMsg = $"The {assetPath} contains circular @import dependencies. All @import directives will be ignored for this StyleSheet.";
Debug.LogError(errorMsg);
m_Errors.AddInternalError(errorMsg);
}
OnImportSuccess(asset);
}
if (!success || m_Errors.hasWarning)
{
OnImportError(m_Errors);
}
}
protected void VisitUrlFunction(PrimitiveTerm term)
{
string path = (string)term.Value;
string projectRelativePath, subAssetPath, errorMessage;
URIValidationResult result = URIHelpers.ValidAssetURL(assetPath, path, out errorMessage, out projectRelativePath, out subAssetPath);
if (result != URIValidationResult.OK)
{
m_Builder.AddValue(path, StyleValueType.MissingAssetReference);
m_Errors.AddValidationWarning(errorMessage, m_Builder.currentProperty.line);
}
else
{
UnityEngine.Object asset = DeclareDependencyAndLoad(projectRelativePath, subAssetPath);
bool isTexture = asset is Texture2D;
Sprite spriteAsset = asset as Sprite;
if (isTexture && string.IsNullOrEmpty(subAssetPath))
{
// Try to load a sprite sub-asset associated with this texture.
// Sprites have extra data, such as slices and tight-meshes that
// aren't stored in plain textures.
spriteAsset = AssetDatabase.LoadAssetAtPath <Sprite>(projectRelativePath);
}
if (isTexture || spriteAsset != null || asset is Font || IsFontAssetInternal(asset) || asset is VectorImage || asset is RenderTexture)
{
// 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
if (spriteAsset != null)
{
DeclareDependencyAndLoad(hiResImageLocation);
}
}
m_Builder.AddValue(spriteAsset != null ? spriteAsset : asset);
}
else
{
m_Errors.AddSemanticError(StyleSheetImportErrorCode.InvalidURIProjectAssetType, string.Format("Invalid asset type {0}, only Font, FontAssets, Sprite, Texture2D and VectorImage are supported", asset.GetType().Name));
}
}
}
