public static Stmt IsWhiteSpace(Ctx ctx) {
// See http://msdn.microsoft.com/en-us/library/t809ektx.aspx for list
var whiteSpace = " \u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029\u0009\u000a\u000b\u000c\u000d\u0085\u00a0";
var arg0 = ctx.MethodParameter(0);
var c = new ExprJsResolvedMethod(ctx, ctx.String, null, "String.fromCharCode", arg0);
var indexOf = new ExprJsResolvedMethod(ctx, ctx.Boolean, ctx.Literal(whiteSpace), "indexOf", c);
return new StmtReturn(ctx,
new ExprBinary(ctx, BinaryOp.GreaterThanOrEqual, ctx.Boolean, indexOf, ctx.Literal(0)));
}
protected virtual ICode VisitJsResolvedMethod(ExprJsResolvedMethod e)
{
this.ThrowOnNoOverride();
var obj = (Expr)this.Visit(e.Obj);
var args = this.HandleList(e.Args, x => (Expr)this.Visit(x));
if (obj != e.Obj || args != null)
{
return(new ExprJsResolvedMethod(e.Ctx, e.Type, obj, e.MethodName, args ?? e.Args));
}
else
{
return(e);
}
}
protected override ICode VisitJsResolvedMethod(ExprJsResolvedMethod e)
{
if (e.Obj != null)
{
this.Visit(e.Obj);
this.js.Append(".");
}
this.js.Append(e.MethodName);
this.js.Append("(");
if (e.Args.Any())
{
foreach (var arg in e.Args)
{
this.Visit(arg);
this.js.Append(", ");
}
this.js.Length -= 2;
}
this.js.Append(")");
return(e);
}
protected virtual ICode VisitJsResolvedMethod(ExprJsResolvedMethod e) {
this.ThrowOnNoOverride();
var obj = (Expr)this.Visit(e.Obj);
var args = this.HandleList(e.Args, x => (Expr)this.Visit(x));
if (obj != e.Obj || args != null) {
return new ExprJsResolvedMethod(e.Ctx, e.Type, obj, e.MethodName, args ?? e.Args);
} else {
return e;
}
}
public static Stmt GetHashCode(Ctx ctx) {
var toString = new ExprJsResolvedMethod(ctx, ctx.String, ctx.This, "toExponential");
var getHashCode = new ExprCall(ctx, typeof(string).GetMethod("GetHashCode"), toString);
var stmt = new StmtReturn(ctx, getHashCode);
return stmt;
}
protected override ICode VisitJsResolvedMethod(ExprJsResolvedMethod e) {
if (e.Obj != null) {
this.Visit(e.Obj);
this.js.Append(".");
}
this.js.Append(e.MethodName);
this.js.Append("(");
if (e.Args.Any()) {
foreach (var arg in e.Args) {
this.Visit(arg);
this.js.Append(", ");
}
this.js.Length -= 2;
}
this.js.Append(")");
return e;
}
/// <summary>
/// If a call/newobj requires translating to an Expr that is not a call/newobj, then it is done here.
/// </summary>
/// <param name="call"></param>
/// <returns></returns>
public static Expr ResolveCallSite(ICall call) {
var ctx = call.Ctx;
var mRef = call.CallMethod;
var tRefDecl = mRef.DeclaringType;
var mDef = mRef.Resolve();
// A call to a method in a "JsClass" class - all external methods/properties require translating to JS
var tDefDecl = mDef.DeclaringType;
var jsClassAttr = tDefDecl.GetCustomAttribute<JsClassAttribute>() ?? tDefDecl.GetCustomAttribute<JsAbstractClassAttribute>();
if (jsClassAttr != null) {
if (mDef.IsExternal()) {
var jsDetail = mDef.GetCustomAttribute<JsDetailAttribute>(true);
var jsDetailName = jsDetail.NullThru(x => (string)x.Properties.FirstOrDefault(y => y.Name == "Name").Argument.Value);
var jsDetailIsDomEventProp = jsDetail.NullThru(x => ((bool?)x.Properties.FirstOrDefault(y => y.Name == "IsDomEvent").Argument.Value) ?? false);
if (mDef.IsGetter || mDef.IsSetter) {
// Property access
if (jsDetailIsDomEventProp) {
// Special handling of DOM events
if (!mDef.IsSetter) {
throw new InvalidOperationException("Only setters supported on DOM events");
}
if (!mDef.Name.StartsWith("set_On")) {
throw new InvalidOperationException("DOM event name must start with 'On'");
}
if (call.Args.Count() != 1) {
throw new InvalidOperationException("DOM event setter must have exactly one argument");
}
var eventName = jsDetailName ?? mDef.Name.Substring(6).ToLowerInvariant();
var eventNameExpr = ctx.Literal(eventName);
var safeCallFunction = (Action<object, string, Delegate>)InternalFunctions.SafeAddEventListener;
var safeCall = new ExprCall(ctx, safeCallFunction, null, call.Obj, eventNameExpr, call.Args.First());
return safeCall;
} else {
var propertyName = jsDetailName ?? JsCase(mDef.Name.Substring(4));
if (mDef.Name.Substring(4) == "Item") {
propertyName = null;
} else if (mDef.IsStatic) {
propertyName = JsCase(mDef.DeclaringType.Name) + "." + propertyName;
}
var jsProperty = new ExprJsResolvedProperty(ctx, call, propertyName);
return jsProperty;
}
} else if (mDef.IsConstructor && !mDef.IsStatic) {
// Constructor new object call
var typeName = jsDetailName ?? (string)jsClassAttr.ConstructorArguments[0].Value;
var expr = new ExprJsResolvedCtor(ctx, typeName, tRefDecl, call.Args);
return expr;
} else {
// Normal method call
var methodName = jsDetailName ?? JsCase(mDef.Name);
if (mDef.IsStatic) {
methodName = JsCase(mDef.DeclaringType.Name) + "." + methodName;
}
var expr = new ExprJsResolvedMethod(ctx, call.Type, call.Obj, methodName, call.Args);
return expr;
}
} else {
return null;
}
}
var jsRedirectAttr = mDef.GetCustomAttribute<JsRedirectAttribute>(true);
if (jsRedirectAttr != null) {
if (jsRedirectAttr.ConstructorArguments[0].Value == null) {
return FindExprReturn(call, call.CallMethod.DeclaringType);
}
var redirectToTRef = ((TypeReference)jsRedirectAttr.ConstructorArguments[0].Value).FullResolve(mRef);
var redirectToMRef = redirectToTRef.EnumResolvedMethods(mRef).First(x => x.MatchMethodOnly(mRef));
switch (call.ExprType) {
case Expr.NodeType.NewObj:
return new ExprNewObj(ctx, redirectToMRef, call.Args);
case Expr.NodeType.Call:
return new ExprCall(ctx, redirectToMRef, call.Obj, call.Args, call.IsVirtualCall, null, call.Type);
default:
throw new NotImplementedException("Cannot handle: " + call.ExprType);
}
}
var exprRet = FindExprReturn(call);
if (exprRet != null) {
return exprRet;
}
return null;
}