public JsNode VisitVariableInitializer(VariableInitializer node)
{
var tLocal = node.Annotation <LocalResolveResult>();
if (tLocal != null && tLocal.Type != null && tLocal.Type.Kind == TypeKind.Struct &&
node.ToString() == node.NameToken.ToString() && node.NextSibling.ToString() == ";")
{
var tType = Type.GetType(tLocal.Type.FullName);
//对于基本数据类型，不用new
if (tType == null || !tType.IsPrimitive)
{
var tTypeMember = new JsMemberExpression {
Name = tLocal.Type.FullName
};
var tCtorMember = new JsMemberExpression {
Name = "ctor", PreviousMember = tTypeMember
};
var tInvocation = new JsInvocationExpression {
Member = tCtorMember
};
var tNewObject = new JsNewObjectExpression {
Invocation = tInvocation
};
return(new JsVariableDeclarator
{
Name = node.Name,
Initializer = tNewObject,
});
}
}
return(new JsVariableDeclarator {
Name = node.Name, Initializer = VisitExpression(node.Initializer)
});
}
void TransformIntoBaseMethodCallIfNeeded(CSharpInvocationResolveResult res, JsInvocationExpression node2)
{
var target = res.TargetResult as ThisResolveResult;
if (target != null && target.CausesNonVirtualInvocation) //base.
{
//var info = res.GetInfo();
//var node = info.Nodes.FirstOrDefault();
var ce = target.Type;// node.FindThisEntity();
if (ce != null && Sk.IsExtJsType(ce.GetDefinitionOrArrayType()))
{
node2.Member = Js.This().Member("callParent");
if (node2.Arguments.IsNotNullOrEmpty())
{
node2.Arguments = new List <JsExpression> {
Js.NewJsonArray(node2.Arguments.ToArray())
}
}
;
//var me2 = (node2.Member as JsMemberExpression);
//me2.Name = "callParent";
return;
}
IMethod me2;
var me = res.Member;
if (me is IProperty)
{
me2 = ((IProperty)me).Getter;
}
else if (me is IMethod)
{
me2 = (IMethod)res.Member;
}
else
{
throw new Exception("Can't resolve method from member: " + res.Member);
}
var member = SkJs.EntityMethodToJsFunctionRef(me2);
member = member.Member("call");
node2.Member = member;
if (node2.Arguments == null)
{
node2.Arguments = new List <JsExpression>();
}
node2.Arguments.Insert(0, Js.This());
}
}
void ProcessByRefs1()
{
ByRefs = new List <ByReferenceResolveResult>();
ByRefIndexes = new List <int>();
RefToRefs = new List <int>();
var c = 0;
foreach (var bin in PrmBindings)
{
var binding = bin.Binding;
var byRef = binding.CallResult as ByReferenceResolveResult;
if (byRef == null)
{
c++;
continue;
}
var x = byRef.ElementResult as LocalResolveResult;
if (x != null && x.Variable != null && x.Variable.Type.Kind == TypeKind.ByReference)
{
if (binding.Parameter.IsRef || binding.Parameter.IsOut)
{
RefToRefs.Add(c);
}
c++;
continue;
}
ByRefs.Add(byRef);
ByRefIndexes.Add(c);
c++;
}
}
void ProcessByRefs2()
{
var c = 0;
for (var i = 0; i < Node2.Arguments.Count; i++)
{
if (Node2.Arguments[i] is JsMemberExpression)
{
JsMemberExpression jsmex = Node2.Arguments[i] as JsMemberExpression;
if (RefToRefs.Contains(i))
{
Node2.Arguments[i] = jsmex.PreviousMember; //remove the .Value ref wrapper
}
else if (ByRefIndexes.Contains(i))
{
Node2.Arguments[i] = Js.Member(RefIndexToName(c));
c++;
}
}
else if (Node2.Arguments[i] is JsIndexerAccessExpression)
{
if (ByRefIndexes.Contains(i))
{
Node2.Arguments[i] = Js.Member(RefIndexToName(c));
c++;
}
}
}
}
void ProcessByRefs3()
{
if (ByRefs.IsNotNullOrEmpty())
{
var func = Js.Function();
//It must assigned to a temporary variable, because typed arrays do not acceppt json.
//调整原来使用临时对象.Value的赋值方式，修改为Object.defineProperty定义get|set方法的实现
//临时对象统一调用jsclr里的$Ref方法进行创建
for (var i = 0; i < ByRefs.Count; i++)
{
var byRef = ByRefs[i];
var expr = VisitExpression(byRef);
if (expr is JsMemberExpression)
{
var memberExpr = expr as JsMemberExpression;
if (memberExpr.PreviousMember != null)
{
var refFuncInvoke = new JsInvocationExpression
{
Member = new JsMemberExpression {
Name = "$Ref"
},
Arguments = new List <JsExpression> {
memberExpr.PreviousMember, Js.String(memberExpr.Name)
}
};
func.Add(Js.Var(RefIndexToName(i), refFuncInvoke).Statement());
}
else
{
//如果是局部变量的话使用旧实现方式
var refFuncInvoke = new JsInvocationExpression
{
Member = new JsMemberExpression {
Name = "$Ref"
},
Arguments = new List <JsExpression> {
Js.Member("null"), memberExpr
}
};
func.Add(Js.Var(RefIndexToName(i), refFuncInvoke).Statement());
}
}
else if (expr is JsIndexerAccessExpression)
{
var indexerExpr = expr as JsIndexerAccessExpression;
var indexArg = indexerExpr.Arguments[0];
var refFuncInvoke = new JsInvocationExpression
{
Member = new JsMemberExpression {
Name = "$Ref"
},
Arguments = new List <JsExpression> {
indexerExpr.Member, indexArg
}
};
func.Add(Js.Var(RefIndexToName(i), refFuncInvoke).Statement());
}
}
func.Add(Js.Var("$res", Node2).Statement());
for (var i = 0; i < ByRefs.Count; i++)
{
var byRef = ByRefs[i];
var memberExpr = VisitExpression(byRef) as JsMemberExpression;
if (memberExpr != null && memberExpr.PreviousMember == null)
{
func.Add(memberExpr.Assign(Js.Member(RefIndexToName(i)).Member("Value")).Statement());
}
}
func.Add(Js.Return(Js.Member("$res")));
Node2 = Importer.WrapFunctionAndInvoke(Res, func);
}
}
public JsNode VisitInvocationResolveResult(CSharpInvocationResolveResult res)
{
Res = res;
ProcessMember();
if (MethodAtt != null && MethodAtt.InlineCode != null)
{
return(Js.CodeExpression(MethodAtt.InlineCode));
}
var conditional = ProcessConditional();
if (conditional)
{
return(null);
}
bool omittedCalls;
var omittedCallsNode = ProcessOmitCalls(out omittedCalls);
if (omittedCalls)
{
return(omittedCallsNode);
}
JsMember = SkJs.EntityToMember(Member);
qiucw.CheckAddInvocation(res, JsMember.Name);
ProcessTarget();
ProcessPrmBindings();
ProcessNativeParams();
ProcessByRefs1();
PrmBindings.ForEach(t => t.JsCallResult = VisitExpression(t.Binding.CallResult));
Node2 = new JsInvocationExpression
{
Member = JsMember,
Arguments = PrmBindings.Select(t => t.JsCallResult).ToList(),
};
ProcessByRefs2();
ProcessExtensionImplementedInInstance();
TransformIntoBaseMethodCallIfNeeded(Res, Node2);
ProcessArgsCustomization();
ProcessGenericMethodArgs();
var inlineCodeExpression = ProcessInlineCodeExpression();
if (inlineCodeExpression != null)
{
return(inlineCodeExpression);
}
var omittedDotOperator = ProcessOmitDotOperator();
if (omittedDotOperator != null)
{
return(omittedDotOperator);
}
ProcessRemoveEmptyPreviousMemberName();
var indexerAccess = ProcessIndexer();
if (indexerAccess != null)
{
return(indexerAccess);
}
ProcessByRefs3();
return(Node2);
}
public static StringSegment ParseJsToken(this StringSegment literal, out JsToken token, bool filterExpression)
{
literal = literal.AdvancePastWhitespace();
if (literal.IsNullOrEmpty())
{
token = null;
return(literal);
}
var c = literal.GetChar(0);
if (c == '(')
{
literal = literal.Advance(1);
literal = literal.ParseJsExpression(out var bracketsExpr);
literal = literal.AdvancePastWhitespace();
c = literal.GetChar(0);
if (c == ')')
{
literal = literal.Advance(1);
token = bracketsExpr;
return(literal);
}
throw new SyntaxErrorException($"Expected ')' but instead found '{c}': {literal.SubstringWithElipsis(0, 50)}");
}
token = null;
c = (char)0;
if (literal.IsNullOrEmpty())
{
return(TypeConstants.EmptyStringSegment);
}
var i = 0;
literal = literal.AdvancePastWhitespace();
var firstChar = literal.GetChar(0);
if (firstChar == '\'' || firstChar == '"' || firstChar == '`' || firstChar == '′')
{
i = 1;
var hasEscapeChar = false;
while (i < literal.Length && ((c = literal.GetChar(i)) != firstChar || literal.GetChar(i - 1) == '\\'))
{
i++;
if (!hasEscapeChar)
{
hasEscapeChar = c == '\\';
}
}
if (i >= literal.Length || literal.GetChar(i) != firstChar)
{
throw new SyntaxErrorException($"Unterminated string literal: {literal}");
}
var str = literal.Substring(1, i - 1);
token = new JsLiteral(str);
if (hasEscapeChar)
{
var sb = StringBuilderCache.Allocate();
for (var j = 0; j < str.Length; j++)
{
// strip the back-slash used to escape quote char in strings
var ch = str[j];
if (ch != '\\' || (j + 1 >= str.Length || str[j + 1] != firstChar))
{
sb.Append(ch);
}
}
token = new JsLiteral(StringBuilderCache.ReturnAndFree(sb));
}
return(literal.Advance(i + 1));
}
if (firstChar >= '0' && firstChar <= '9')
{
i = 1;
var hasExponent = false;
var hasDecimal = false;
while (i < literal.Length && IsNumericChar(c = literal.GetChar(i)) ||
(hasExponent = (c == 'e' || c == 'E')))
{
if (c == '.')
{
hasDecimal = true;
}
i++;
if (hasExponent)
{
i += 2; // [e+1]0
while (i < literal.Length && IsNumericChar(literal.GetChar(i)))
{
i++;
}
break;
}
}
var numLiteral = literal.Subsegment(0, i);
//don't convert into ternary to avoid Type coercion
if (hasDecimal || hasExponent)
{
token = new JsLiteral(numLiteral.TryParseDouble(out double d) ? d : default(double));
}
else
{
token = new JsLiteral(numLiteral.ParseSignedInteger());
}
return(literal.Advance(i));
}
if (firstChar == '{')
{
var props = new List <JsProperty>();
literal = literal.Advance(1);
while (!literal.IsNullOrEmpty())
{
literal = literal.AdvancePastWhitespace();
if (literal.GetChar(0) == '}')
{
literal = literal.Advance(1);
break;
}
literal = literal.ParseJsToken(out var mapKeyToken);
if (!(mapKeyToken is JsLiteral) && !(mapKeyToken is JsIdentifier))
{
throw new SyntaxErrorException($"'{mapKeyToken}' is not a valid Object key, expected literal or identifier.");
}
JsToken mapValueToken;
bool shorthand = false;
literal = literal.AdvancePastWhitespace();
if (literal.Length > 0 && literal.GetChar(0) == ':')
{
literal = literal.Advance(1);
literal = literal.ParseJsExpression(out mapValueToken);
}
else
{
shorthand = true;
if (literal.Length == 0 || (c = literal.GetChar(0)) != ',' && c != '}')
{
throw new SyntaxErrorException($"Unterminated object literal near: {literal.SubstringWithElipsis(0, 50)}");
}
mapValueToken = mapKeyToken;
}
props.Add(new JsProperty(mapKeyToken, mapValueToken, shorthand));
literal = literal.AdvancePastWhitespace();
if (literal.IsNullOrEmpty())
{
break;
}
if (literal.GetChar(0) == '}')
{
literal = literal.Advance(1);
break;
}
literal = literal.AdvancePastChar(',');
literal = literal.AdvancePastWhitespace();
}
token = new JsObjectExpression(props);
return(literal);
}
if (firstChar == '[')
{
literal = literal.ParseArguments(out var elements, termination: ']');
token = new JsArrayExpression(elements);
return(literal);
}
if (firstChar.IsOperatorChar())
{
if (literal.StartsWith(">="))
{
token = JsGreaterThanEqual.Operator;
return(literal.Advance(2));
}
if (literal.StartsWith("<="))
{
token = JsLessThanEqual.Operator;
return(literal.Advance(2));
}
if (literal.StartsWith("!=="))
{
token = JsStrictNotEquals.Operator;
return(literal.Advance(3));
}
if (literal.StartsWith("!="))
{
token = JsNotEquals.Operator;
return(literal.Advance(2));
}
if (literal.StartsWith("==="))
{
token = JsStrictEquals.Operator;
return(literal.Advance(3));
}
if (literal.StartsWith("=="))
{
token = JsEquals.Operator;
return(literal.Advance(2));
}
if (literal.StartsWith("||"))
{
token = JsOr.Operator;
return(literal.Advance(2));
}
if (literal.StartsWith("&&"))
{
token = JsAnd.Operator;
return(literal.Advance(2));
}
if (literal.StartsWith("<<"))
{
token = JsBitwiseLeftShift.Operator;
return(literal.Advance(2));
}
if (literal.StartsWith(">>"))
{
token = JsBitwiseRightShift.Operator;
return(literal.Advance(2));
}
switch (firstChar)
{
case '>':
token = JsGreaterThan.Operator;
return(literal.Advance(1));
case '<':
token = JsLessThan.Operator;
return(literal.Advance(1));
case '=':
token = JsAssignment.Operator;
return(literal.Advance(1));
case '!':
token = JsNot.Operator;
return(literal.Advance(1));
case '+':
token = JsAddition.Operator;
return(literal.Advance(1));
case '-':
token = JsSubtraction.Operator;
return(literal.Advance(1));
case '*':
token = JsMultiplication.Operator;
return(literal.Advance(1));
case '/':
token = JsDivision.Operator;
return(literal.Advance(1));
case '&':
token = JsBitwiseAnd.Operator;
return(literal.Advance(1));
case '|':
token = JsBitwiseOr.Operator;
return(literal.Advance(1));
case '^':
token = JsBitwiseXOr.Operator;
return(literal.Advance(1));
case '%':
token = JsMod.Operator;
return(literal.Advance(1));
default:
throw new SyntaxErrorException($"Invalid Operator found near: '{literal.SubstringWithElipsis(0, 50)}'");
}
}
// identifier
var preIdentifierLiteral = literal;
literal = literal.ParseIdentifier(out var node);
literal = literal.AdvancePastWhitespace();
if (!literal.IsNullOrEmpty())
{
c = literal.GetChar(i);
if (c == '.' || c == '[')
{
while (true)
{
literal = literal.Advance(1);
if (c == '.')
{
literal = literal.AdvancePastWhitespace();
literal = literal.ParseIdentifier(out var property);
node = new JsMemberExpression(node, property, computed: false);
}
else if (c == '[')
{
literal = literal.AdvancePastWhitespace();
literal = literal.ParseJsExpression(out var property);
node = new JsMemberExpression(node, property, computed: true);
literal = literal.AdvancePastWhitespace();
if (literal.IsNullOrEmpty() || literal.GetChar(0) != ']')
{
throw new SyntaxErrorException($"Expected ']' but was '{literal.GetChar(0)}'");
}
literal = literal.Advance(1);
}
literal = literal.AdvancePastWhitespace();
if (literal.IsNullOrWhiteSpace())
{
break;
}
c = literal.GetChar(0);
if (c == '(')
{
throw new SyntaxErrorException("Call expression found on member expression. Only filters can be invoked.");
}
if (!(c == '.' || c == '['))
{
break;
}
}
}
else if (c == '(' || (filterExpression && c == ':'))
{
literal = preIdentifierLiteral.ParseJsCallExpression(out var callExpr, filterExpression: filterExpression);
token = callExpr;
return(literal);
}
}
token = node;
return(literal);
}
/// <summary>
/// Equalses the specified other.
/// </summary>
/// <param name="other">The other.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
protected bool Equals(JsMemberExpression other)
{
return(Equals(Object, other.Object) &&
Equals(Property, other.Property) &&
Computed == other.Computed);
}
