/// <summary>Applies the css validation visitors.</summary>
/// <param name="stylesheetNode">The stylesheet node.</param>
/// <param name="threadContext">The thread Context.</param>
/// <returns>The processed node.</returns>
private AstNode ApplyValidation(AstNode stylesheetNode, IWebGreaseContext threadContext)
{
threadContext.SectionedAction(SectionIdParts.MinifyCssActivity, SectionIdParts.Validate).Execute(() =>
{
// Step # 1 - Remove the Css properties from Ast which need to be excluded (Bridging)
if (this.ShouldExcludeProperties)
{
stylesheetNode = stylesheetNode.Accept(new ExcludePropertyVisitor());
}
// Step # 2 - Validate for lower case
if (this.ShouldValidateForLowerCase)
{
stylesheetNode = stylesheetNode.Accept(new ValidateLowercaseVisitor());
}
// Step # 3 - Validate for Css hacks which don't work cross browser
if (this.HackSelectors != null && this.HackSelectors.Any())
{
stylesheetNode = stylesheetNode.Accept(new SelectorValidationOptimizationVisitor(this.HackSelectors, false, true));
}
// Step # 4 - Remove any banned selectors which are exposed for page efficiency
if (this.BannedSelectors != null && this.BannedSelectors.Any())
{
stylesheetNode = stylesheetNode.Accept(new SelectorValidationOptimizationVisitor(this.BannedSelectors, false, false));
}
});
return(stylesheetNode);
}
private void FillFollowPosClosure(int posOffset, AstNode inner)
{
var firstPosVisitor = new FirstPosGetter();
foreach (int pos in inner.Accept(lastPosGetter, posOffset))
{
positions[pos].FollowPos.AddAll(inner.Accept(firstPosVisitor, posOffset));
}
}
public int Measure()
{
// we just want to measure the potential delta
m_measure = true;
m_delta = 0;
// do it and return the result
m_expression.Accept(this);
return(m_delta);
}
private NFA ConvertRegexAstToNFA(AstNode root)
{
var visitor = new RegexToNFAVisitor();
root.Accept(visitor);
return(visitor.Root);
}
public static Process CreateFromAst(AstNode n, string[] namespaces, Type[] types)
{
var sb = new StringBuilder();
foreach (var ns in namespaces)
{
sb.AppendLine($"using {ns};");
}
sb.AppendLine(@"
using System;
using System.Linq;
namespace ce_toy_fx.dynamic
{
class DynamicProcess
{
public static Process GetProcess()
{
return
");
var compiler = new AstCompiler();
n.Accept(compiler);
sb.AppendLine(compiler.ToString());
sb.AppendLine(@"
.CompileToProcess(""Sample process"");
}
}
}
");
return(CreateFromString(sb.ToString(), types));
}
public static void Apply(AstNode node)
{
if (node != null)
{
node.Accept(s_instance);
}
}
public static void Apply(AstNode node)
{
if (node != null)
{
node.Accept(s_instance);
}
}
public static bool NeedsParens(AstNode expression, bool outerHasNoArguments)
{
var visitor = new NewParensVisitor(outerHasNoArguments);
expression.Accept(visitor);
return(visitor.m_needsParens);
}
public override AstNode Visit(FunctionDefinition node)
{
// Visit the prototype.
AstNode proto = node.GetPrototype();
proto.Accept(this);
return(node);
}
public RegularTree(AstNode root)
{
this.EoiCharSetNode = CharSetNode.Create(EoiChar);
this.AugmentedRoot = new CatNode(new List<AstNode> { root, EoiCharSetNode });
var positionBuilder = new PositionBuilder();
AugmentedRoot.Accept(positionBuilder, null);
Positions = positionBuilder.Positions;
EoiPosition = Positions.FindIndex(pos => pos.Characters.Contains(EoiChar));
Debug.Assert(EoiPosition >= 0);
var firstPosVisitor = new FirstPosGetter();
this.FirstPos = AugmentedRoot.Accept(firstPosVisitor, 0);
var followPosBuilder = new FollowPosBuilder(Positions);
AugmentedRoot.Accept(followPosBuilder, 0);
}
/// <summary>Applies the css optimization visitors.</summary>
/// <param name="stylesheetNode">The stylesheet node.</param>
/// <param name="threadContext">The thread Context.</param>
/// <returns>The processed node.</returns>
private AstNode ApplyOptimization(AstNode stylesheetNode, IWebGreaseContext threadContext)
{
// Step # 5 - Run the Css optimization visitors
if (this.ShouldOptimize)
{
threadContext.SectionedAction(SectionIdParts.MinifyCssActivity, SectionIdParts.Optimize).Execute(
() =>
{
stylesheetNode = stylesheetNode.Accept(new OptimizationVisitor {
ShouldMergeMediaQueries = this.ShouldMergeMediaQueries, ShouldPreventOrderBasedConflict = this.ShouldPreventOrderBasedConflict, ShouldMergeBasedOnCommonDeclarations = this.ShouldMergeBasedOnCommonDeclarations, NonMergeRuleSetSelectors = this.NonMergeSelectors
});
stylesheetNode = stylesheetNode.Accept(new ColorOptimizationVisitor());
stylesheetNode = stylesheetNode.Accept(new FloatOptimizationVisitor());
});
}
return(stylesheetNode);
}
private static T MakeFunc <T>(AstNode astFunction)
{
var generator = new ExpressionGenerator();
var expressionBody = astFunction.Accept(generator);
var lambda = Expression.Lambda <T>(expressionBody, generator.GetParameters());
var f = lambda.Compile(DebugInfoGenerator.CreatePdbGenerator());
return(f);
}
/// <summary>
/// For the given binding node, return a collection of individual INameDeclaration
/// nodes that represent the names being declared for this binding element.
/// </summary>
/// <param name="node">binding node</param>
/// <returns>collection of INameDeclaration nodes</returns>
public static IList<BindingIdentifier> Bindings(AstNode node)
{
var visitor = new BindingsVisitor();
if (node != null)
{
node.Accept(visitor);
}
return visitor.m_bindings;
}
/// <summary>
/// For the given binding node, return a collection of individual lookup
/// nodes that represent the names being referenced.
/// </summary>
/// <param name="node">binding node</param>
/// <returns>collection of Lookup nodes</returns>
public static IList<LookupExpression> References(AstNode node)
{
var visitor = new BindingsVisitor();
if (node != null)
{
node.Accept(visitor);
}
return visitor.m_lookups;
}
/// <summary>Applies the css resource visitors.</summary>
/// <param name="stylesheetNode">The stylesheet node.</param>
/// <param name="resources">The resources.</param>
/// <param name="threadContext">The thread Context.</param>
/// <returns>The processed node.</returns>
private static AstNode ApplyResources(AstNode stylesheetNode, IEnumerable <IDictionary <string, string> > resources, IWebGreaseContext threadContext)
{
if (resources.Any())
{
threadContext.SectionedAction(SectionIdParts.MinifyCssActivity, SectionIdParts.ResourcesResolution)
.Execute(() => { stylesheetNode = stylesheetNode.Accept(new ResourceResolutionVisitor(resources)); });
}
return(stylesheetNode);
}
public static bool Apply(TextWriter writer, AstNode node, CodeSettings settings)
{
if (node != null)
{
var visitor = new JsonOutputVisitor(writer, settings);
node.Accept(visitor);
return(visitor.IsValid);
}
return(false);
}
public static bool Apply(TextWriter writer, AstNode node)
{
if (node != null)
{
var visitor = new JSONOutputVisitor(writer);
node.Accept(visitor);
return visitor.IsValid;
}
return false;
}
public bool IsSafe(AstNode node)
{
// assume it is unless preven otherwise
m_isSafe = true;
if (node != null)
{
node.Accept(this);
}
return(m_isSafe);
}
public static bool References(AstNode node, Lookup lookup)
{
if (node == null || lookup == null)
{
return(false);
}
var visitor = new ReferencesVisitor(lookup);
node.Accept(visitor);
return(visitor.m_hasReference);
}
public bool Query(AstNode node)
{
// requires by default unless a node explicitly says it doesn't need one
DoesRequire = node != null;
if (node != null)
{
node.Accept(this);
}
return(DoesRequire);
}
public static IEnumerable <AstNode> Traverse(AstNode node)
{
yield return(node);
foreach (var child in node.Accept(new AstChildrenVisitor()))
{
foreach (var childTraverse in Traverse(child))
{
yield return(childTraverse);
}
}
}
/// <summary>Print the <see cref="AstNode"/></summary>
/// <param name="prettyPrint">The pretty print</param>
/// <param name="node">The node to print</param>
/// <returns>The string representation of AST node</returns>
internal string Print(bool prettyPrint, AstNode node)
{
_printerFormatter.PrettyPrint = prettyPrint;
_printerFormatter.IndentCharacter = IndentCharacter;
_printerFormatter.IndentSize = IndentSize;
if (node != null)
{
node.Accept(this);
}
return(_printerFormatter.ToString());
}
public RegularTree(AstNode root)
{
this.EoiCharSetNode = CharSetNode.Create(EoiChar);
this.AugmentedRoot = new CatNode(new List <AstNode> {
root, EoiCharSetNode
});
var positionBuilder = new PositionBuilder();
AugmentedRoot.Accept(positionBuilder, null);
Positions = positionBuilder.Positions;
EoiPosition = Positions.FindIndex(pos => pos.Characters.Contains(EoiChar));
Debug.Assert(EoiPosition >= 0);
var firstPosVisitor = new FirstPosGetter();
this.FirstPos = AugmentedRoot.Accept(firstPosVisitor, 0);
var followPosBuilder = new FollowPosBuilder(Positions);
AugmentedRoot.Accept(followPosBuilder, 0);
}
public void LinkProgram()
{
// Read the result.
AstNode content = moduleNode;
// Perform semantic analysis passes.
AstVisitor[] semanticPasses = new AstVisitor[] {
// Declare module types.
new ModuleTypeDeclaration(),
// Expand using <namespaces>.
new PseudoScopeExpansion(),
// Expand type defs.
new TypedefExpansion(),
// Read the object bases.
new ModuleReadBases(),
// Declare module object(type members)
new ModuleObjectDeclarator(),
// Explicit interface member binding.
new ExplicitInterfaceBinding(),
// Build type inheritance tables.
new ModuleInheritance(),
// Perform function semantic analysis.
new FunctionSemantic(),
// Expand constants.
new ConstantExpansion(),
// Generate function byte code.
new FunctionGenerator(),
};
// Execute passes.
for (int i = 0; i < semanticPasses.Length; ++i)
{
AstVisitor pass = semanticPasses[i];
pass.BeginPass();
Benchmark.Begin();
content.Accept(pass);
Benchmark.End(pass.GetType().ToString());
pass.EndPass();
}
}
public override AstNode Visit(AstNode node)
{
if (node == null)
{
return(null);
}
AddDiagnostics(node);
if (!node.Unused.IsNullOrEmpty())
{
foreach (var un in node.Unused)
{
AddDiagnostics(un);
}
}
return(node.Accept(this));
}
public void RgbCollapse()
{
const string FileName = @"RgbCollapse.css";
AstNode styleSheetNode = CssParser.Parse(new FileInfo(Path.Combine(ActualDirectory, FileName)));
Assert.IsNotNull(styleSheetNode);
styleSheetNode = styleSheetNode.Accept(new ColorOptimizationVisitor());
Assert.IsNotNull(styleSheetNode);
MinificationVerifier.VerifyMinification(BaseDirectory, FileName, new List <NodeVisitor> {
new ColorOptimizationVisitor()
});
PrettyPrintVerifier.VerifyPrettyPrint(BaseDirectory, FileName, new List <NodeVisitor> {
new ColorOptimizationVisitor()
});
}
/// <summary>Executes the image assembly update visitor</summary>
/// <param name="stylesheetNode">The stylesheet Ast node</param>
/// <param name="imageLogs">The sprite Log Files.</param>
/// <param name="dpi">The dpi.</param>
/// <returns>The modified AST node if modified otherwise the original node</returns>
private AstNode ExecuteImageAssemblyUpdate(AstNode stylesheetNode, IEnumerable <ImageLog> imageLogs, float dpi)
{
var imageAssemblyUpdateVisitor = new ImageAssemblyUpdateVisitor(
this.SourceFile,
imageLogs,
dpi,
this.OutputUnit,
this.OutputUnitFactor,
this.ImageBasePrefixToRemoveFromOutputPathInLog,
this.ImageBasePrefixToAddToOutputPath,
this.availableSourceImages,
this.MissingImageUrl);
stylesheetNode = stylesheetNode.Accept(imageAssemblyUpdateVisitor);
// Return the updated Ast
return(stylesheetNode);
}
bool IsEqualNodes(AstNode first, AstNode second)
{
if (first == null)
{
return(second == null);
}
if (second == null)
{
return(false);
}
if (first.GetType() != second.GetType())
{
return(false);
}
_other = second;
return(first.Accept(this));
}
private ILCode CreateCode(string moduleName, string typeName, AstNode exp)
{
if (Path.GetFileName(moduleName) != moduleName)
{
throw new Exception("can only output into current directory!");
}
var name = new AssemblyName(Path.GetFileNameWithoutExtension(moduleName));
AssemblyBuilder asmb = AppDomain.CurrentDomain.DefineDynamicAssembly(name, AssemblyBuilderAccess.Save);
ModuleBuilder modb = asmb.DefineDynamicModule(moduleName);
TypeBuilder typeBuilder = modb.DefineType(typeName);
MethodBuilder methMain = typeBuilder.DefineMethod("Main", MethodAttributes.Static, typeof(void),
Type.EmptyTypes);
var ilcode = new ILCode {
Type = typeBuilder, Method = methMain, Module = modb
};
init.CodeInfo = ilcode;
init.GeneratePredifinedCode();
TypeBuilder nested = AddFunctionMainToCode(ilcode, methMain);
ilcode.Type = nested;
ILCodeGenerator codeGenerator = new ILCodeGenerator(ilcode);
//generacion de codigos
exp.Accept(codeGenerator);
ILGenerator il = methMain.GetILGenerator();
il.Emit(OpCodes.Ret);
nested.CreateType();
typeBuilder.CreateType();
modb.CreateGlobalFunctions();
asmb.SetEntryPoint(methMain);
asmb.Save(moduleName);
return(ilcode);
}
/// <summary>Scans the css for the image path references</summary>
/// <param name="stylesheetNode">The stylesheet node</param>
/// <param name="threadContext">The thread Context.</param>
/// <returns>The modified AST node if modified otherwise the original node</returns>
private ImageAssemblyScanVisitor ExecuteImageAssemblyScan(AstNode stylesheetNode, IWebGreaseContext threadContext)
{
var imageAssemblyScanVisitor = new ImageAssemblyScanVisitor(
this.SourceFile,
this.ImageAssembleReferencesToIgnore,
this.IgnoreImagesWithNonDefaultBackgroundSize,
this.OutputUnit,
this.OutputUnitFactor,
this.availableSourceImages,
this.MissingImageUrl,
true)
{
Context = threadContext
};
// Scan log visitor should and does not change the stylesheet, no need to use the result.
stylesheetNode.Accept(imageAssemblyScanVisitor);
// return the can log results.
return(imageAssemblyScanVisitor);
}
public bool Match(AstNode node, string identifiers)
{
// set the match to false
m_isMatch = false;
// identifiers cannot be null or blank and must match: IDENT(.IDENT)*
// since for JS there has to be at least a global object, the dot must be AFTER the first character.
if (node != null && !string.IsNullOrEmpty(identifiers))
{
// get all the parts
var parts = identifiers.Split('.');
// each part must be a valid JavaScript identifier. Assume everything is valid
// unless at least one is invalid -- then forget it
var isValid = true;
foreach (var part in parts)
{
if (!JSScanner.IsValidIdentifier(part))
{
isValid = false;
break;
}
}
// must be valid to continue
if (isValid)
{
// save the parts and start the index on the last one, since we'll be walking backwards
m_parts = parts;
m_index = parts.Length - 1;
node.Accept(this);
}
}
return(m_isMatch);
}
public bool Match(AstNode node, string identifiers)
{
// set the match to false
m_isMatch = false;
// identifiers cannot be null or blank and must match: IDENT(.IDENT)*
// since for JS there has to be at least a global object, the dot must be AFTER the first character.
if (node != null && !string.IsNullOrEmpty(identifiers))
{
// get all the parts
var parts = identifiers.Split('.');
// each part must be a valid JavaScript identifier. Assume everything is valid
// unless at least one is invalid -- then forget it
var isValid = true;
foreach (var part in parts)
{
if (!JSScanner.IsValidIdentifier(part))
{
isValid = false;
break;
}
}
// must be valid to continue
if (isValid)
{
// save the parts and start the index on the last one, since we'll be walking backwards
m_parts = parts;
m_index = parts.Length - 1;
node.Accept(this);
}
}
return m_isMatch;
}
public static bool NeedsParens(AstNode expression, bool outerHasNoArguments)
{
var visitor = new NewParensVisitor(outerHasNoArguments);
expression.Accept(visitor);
return visitor.m_needsParens;
}
private static bool IsNullable(AstNode root)
{
bool result = root.Accept(NullableGetter.Instance);
return result;
}
public static void Apply(AstNode node, ActivationObject scope, CodeSettings settings)
{
if (node != null && scope != null)
{
// create the visitor and run it. This will create all the child
// scopes and populate all the scopes with the var-decl, lex-decl,
// and lookup references within them.
var visitor = new ResolutionVisitor(scope, settings);
node.Accept(visitor);
// now that all the scopes are created and they all know what decls
// they contains, create all the fields
CreateFields(scope);
// now that all the fields have been created in all the scopes,
// let's go through and resolve all the references
ResolveLookups(scope, settings);
// now that everything is declared and resolved as per the language specs,
// we need to go back and add ghosted fields for older versions of IE that
// incorrectly implement catch-variables and named function expressions.
AddGhostedFields(scope);
}
}
private CodeDomArg VisitChild(AstNode node, CodeDomArg arg)
{
_codeStack.Push(arg);
node.Accept(this);
return _codeStack.Pop();
}
public virtual AstNode Visit(AstNode node)
{
return(node?.Accept(this));
}
private object Evaluate(AstNode expr)
{
return(expr.Accept(this));
}
public void Visit(AstNode node)
{
if (node != null)
node.Accept(this);
}
