private AST ParseLeftHandSideExpression(bool isMinus, ref bool canBeAttribute, bool warnForKeyword){
AST ast = null;
bool isFunction = false;
ArrayList newContexts = null;
// new expression
while (JSToken.New == this.currentToken.token){
if (null == newContexts)
newContexts = new ArrayList(4);
newContexts.Add(this.currentToken.Clone());
GetNextToken();
}
JSToken token = this.currentToken.token;
switch (token){
// primary expression
case JSToken.Identifier:
ast = new Lookup(this.scanner.GetIdentifier(), this.currentToken.Clone());
break;
case JSToken.This:
canBeAttribute = false;
ast = new ThisLiteral(this.currentToken.Clone(), false);
break;
case JSToken.Super:
canBeAttribute = false;
ast = new ThisLiteral(this.currentToken.Clone(), true);
break;
case JSToken.StringLiteral:
canBeAttribute = false;
ast = new ConstantWrapper(this.scanner.GetStringLiteral(), this.currentToken.Clone());
break;
case JSToken.IntegerLiteral:
{canBeAttribute = false;
String number = this.currentToken.GetCode();
Object n = Convert.LiteralToNumber(number, this.currentToken);
if (n == null)
n = 0;
ast = new ConstantWrapper(n, this.currentToken.Clone());
((ConstantWrapper)ast).isNumericLiteral = true;
break;}
case JSToken.NumericLiteral:
{canBeAttribute = false;
String number = (isMinus) ? "-" + this.currentToken.GetCode() : this.currentToken.GetCode();
double d = Convert.ToNumber(number, false, false, Missing.Value);
ast = new ConstantWrapper(d, this.currentToken.Clone());
((ConstantWrapper)ast).isNumericLiteral = true;
break;}
case JSToken.True:
canBeAttribute = false;
ast = new ConstantWrapper(true, this.currentToken.Clone());
break;
case JSToken.False:
canBeAttribute = false;
ast = new ConstantWrapper(false, this.currentToken.Clone());
break;
case JSToken.Null:
canBeAttribute = false;
ast = new NullLiteral(this.currentToken.Clone());
break;
case JSToken.PreProcessorConstant:
canBeAttribute = false;
ast = new ConstantWrapper(this.scanner.GetPreProcessorValue(), this.currentToken.Clone());
break;
case JSToken.Divide:
canBeAttribute = false;
// could it be a regexp?
String source = this.scanner.ScanRegExp();
if (source != null){
bool badRegExp = false;
try {
new Regex(source, RegexOptions.ECMAScript);
} catch (System.ArgumentException) {
// Replace the invalid source with the trivial regular expression.
source = "";
badRegExp = true;
}
String flags = this.scanner.ScanRegExpFlags();
if (flags == null)
ast = new RegExpLiteral(source, null, this.currentToken.Clone());
else
try{
ast = new RegExpLiteral(source, flags, this.currentToken.Clone());
}catch (JScriptException){
// The flags are invalid, so use null instead.
ast = new RegExpLiteral(source, null, this.currentToken.Clone());
badRegExp = true;
}
if (badRegExp){
ReportError(JSError.RegExpSyntax, true);
}
break;
}
goto default;
// expression
case JSToken.LeftParen:
canBeAttribute = false;
GetNextToken();
this.noSkipTokenSet.Add(NoSkipTokenSet.s_ParenExpressionNoSkipToken);
try{
ast = ParseExpression();
if (JSToken.RightParen != this.currentToken.token)
ReportError(JSError.NoRightParen);
}catch(RecoveryTokenException exc){
if (IndexOfToken(NoSkipTokenSet.s_ParenExpressionNoSkipToken, exc) == -1)
throw exc;
else
ast = exc._partiallyComputedNode;
}finally{
this.noSkipTokenSet.Remove(NoSkipTokenSet.s_ParenExpressionNoSkipToken);
}
if (ast == null) //this can only happen when catching the exception and nothing was sent up by the caller
SkipTokensAndThrow();
break;
// array initializer
case JSToken.LeftBracket:
canBeAttribute = false;
Context listCtx = this.currentToken.Clone();
ASTList list = new ASTList(this.currentToken.Clone());
GetNextToken();
if (this.currentToken.token == JSToken.Identifier && this.scanner.PeekToken() == JSToken.Colon){
this.noSkipTokenSet.Add(NoSkipTokenSet.s_BracketToken);
try{
if (this.currentToken.GetCode() == "assembly"){
GetNextToken(); GetNextToken();
return new AssemblyCustomAttributeList(this.ParseCustomAttributeList());
}else{
ReportError(JSError.ExpectedAssembly);
SkipTokensAndThrow();
}
}catch(RecoveryTokenException exc){
exc._partiallyComputedNode = new Block(listCtx);
return exc._partiallyComputedNode;
}finally{
if (this.currentToken.token == JSToken.RightBracket){
this.errorToken = null;
GetNextToken();
}
this.noSkipTokenSet.Remove(NoSkipTokenSet.s_BracketToken);
}
}
while (JSToken.RightBracket != this.currentToken.token){
if (JSToken.Comma != this.currentToken.token){
this.noSkipTokenSet.Add(NoSkipTokenSet.s_ArrayInitNoSkipTokenSet);
try{
list.Append(ParseExpression(true));
if (JSToken.Comma != this.currentToken.token){
if (JSToken.RightBracket != this.currentToken.token)
ReportError(JSError.NoRightBracket);
break;
}
}catch(RecoveryTokenException exc){
if (exc._partiallyComputedNode != null)
list.Append(exc._partiallyComputedNode);
if (IndexOfToken(NoSkipTokenSet.s_ArrayInitNoSkipTokenSet, exc) == -1){
listCtx.UpdateWith(CurrentPositionContext());
exc._partiallyComputedNode = new ArrayLiteral(listCtx, list);
throw exc;
}else{
if (JSToken.RightBracket == this.currentToken.token)
break;
}
}finally{
this.noSkipTokenSet.Remove(NoSkipTokenSet.s_ArrayInitNoSkipTokenSet);
}
}else{
list.Append(new ConstantWrapper(Missing.Value, this.currentToken.Clone()));
}
GetNextToken();
}
listCtx.UpdateWith(this.currentToken);
ast = new ArrayLiteral(listCtx, list);
break;
// object initializer
case JSToken.LeftCurly:
canBeAttribute = false;
Context objCtx = this.currentToken.Clone();
GetNextToken();
ASTList fields = new ASTList(this.currentToken.Clone());
if (JSToken.RightCurly != this.currentToken.token){
for (;;){
AST field = null;
AST value = null;
if (JSToken.Identifier == this.currentToken.token)
field = new ConstantWrapper(this.scanner.GetIdentifier(), this.currentToken.Clone());
else if (JSToken.StringLiteral == this.currentToken.token)
field = new ConstantWrapper(this.scanner.GetStringLiteral(), this.currentToken.Clone());
else if (JSToken.IntegerLiteral == this.currentToken.token || JSToken.NumericLiteral == this.currentToken.token ){
String numberString = this.currentToken.GetCode();
double dValue = Convert.ToNumber(numberString, true, true, Missing.Value);
field = new ConstantWrapper(dValue, this.currentToken.Clone());
((ConstantWrapper)field).isNumericLiteral = true;
}else{
ReportError(JSError.NoMemberIdentifier);
field = new IdentifierLiteral("_#Missing_Field#_" + s_cDummyName++, CurrentPositionContext());
}
ASTList pair = new ASTList(field.context.Clone());
GetNextToken();
this.noSkipTokenSet.Add(NoSkipTokenSet.s_ObjectInitNoSkipTokenSet);
try{
// get the value
if (JSToken.Colon != this.currentToken.token){
ReportError(JSError.NoColon, true);
value = ParseExpression(true);
}else{
GetNextToken();
value = ParseExpression(true);
}
// put the pair into the list of fields
pair.Append(field);
pair.Append(value);
fields.Append(pair);
if (JSToken.RightCurly == this.currentToken.token)
break;
else{
if (JSToken.Comma == this.currentToken.token)
GetNextToken();
else{
if (this.scanner.GotEndOfLine()){
ReportError(JSError.NoRightCurly);
}else
ReportError(JSError.NoComma, true);
SkipTokensAndThrow();
}
}
}catch(RecoveryTokenException exc){
if (exc._partiallyComputedNode != null){
// the problem was in ParseExpression trying to determine value
value = exc._partiallyComputedNode;
pair.Append(field);
pair.Append(value);
fields.Append(pair);
}
if (IndexOfToken(NoSkipTokenSet.s_ObjectInitNoSkipTokenSet, exc) == -1){
exc._partiallyComputedNode = new ObjectLiteral(objCtx, fields);
throw exc;
}else{
if (JSToken.Comma == this.currentToken.token)
GetNextToken();
if (JSToken.RightCurly == this.currentToken.token)
break;
}
}finally{
this.noSkipTokenSet.Remove(NoSkipTokenSet.s_ObjectInitNoSkipTokenSet);
}
}
}
fields.context.UpdateWith(this.currentToken);
objCtx.UpdateWith(this.currentToken);
ast = new ObjectLiteral(objCtx, fields);
break;
// function expression
case JSToken.Function:
canBeAttribute = false;
ast = ParseFunction((FieldAttributes)0, true, this.currentToken.Clone(), false, false, false, false, null);
isFunction = true;
break;
default:
string identifier = JSKeyword.CanBeIdentifier(this.currentToken.token);
if (null != identifier){
if (warnForKeyword){
switch (this.currentToken.token){
case JSToken.Boolean :
case JSToken.Byte :
case JSToken.Char :
case JSToken.Double :
case JSToken.Float :
case JSToken.Int :
case JSToken.Long :
case JSToken.Short :
case JSToken.Void :
break;
default:
ForceReportInfo(JSError.KeywordUsedAsIdentifier);
break;
}
}
canBeAttribute = false;
ast = new Lookup(identifier, this.currentToken.Clone());
}else if (this.currentToken.token == JSToken.BitwiseAnd){ //& expr used outside of a parameter list
ReportError(JSError.WrongUseOfAddressOf);
this.errorToken = null;
GetNextToken();
return this.ParseLeftHandSideExpression(isMinus, ref canBeAttribute, warnForKeyword);
}else{
ReportError(JSError.ExpressionExpected);
SkipTokensAndThrow();
}
break;
}
// can be a CallExpression, that is, followed by '.' or '(' or '['
if (!isFunction)
GetNextToken();
return MemberExpression(ast, newContexts, ref canBeAttribute);
}
private AST ParseLeftHandSideExpression(bool isMinus, ref bool canBeAttribute, bool warnForKeyword)
{
AST expression = null;
Context context;
ASTList list2;
Context context2;
ASTList list3;
string str6;
bool flag = false;
ArrayList newContexts = null;
while (JSToken.New == this.currentToken.token)
{
if (newContexts == null)
{
newContexts = new ArrayList(4);
}
newContexts.Add(this.currentToken.Clone());
this.GetNextToken();
}
JSToken token = this.currentToken.token;
if (token <= JSToken.Divide)
{
switch (token)
{
case JSToken.Function:
canBeAttribute = false;
expression = this.ParseFunction(FieldAttributes.PrivateScope, true, this.currentToken.Clone(), false, false, false, false, null);
flag = true;
goto Label_0956;
case JSToken.LeftCurly:
{
AST ast2;
canBeAttribute = false;
context2 = this.currentToken.Clone();
this.GetNextToken();
list3 = new ASTList(this.currentToken.Clone());
if (JSToken.RightCurly == this.currentToken.token)
{
goto Label_0830;
}
Label_05C9:
ast2 = null;
AST elem = null;
if (JSToken.Identifier == this.currentToken.token)
{
ast2 = new ConstantWrapper(this.scanner.GetIdentifier(), this.currentToken.Clone());
}
else if (JSToken.StringLiteral == this.currentToken.token)
{
ast2 = new ConstantWrapper(this.scanner.GetStringLiteral(), this.currentToken.Clone());
}
else if ((JSToken.IntegerLiteral == this.currentToken.token) || (JSToken.NumericLiteral == this.currentToken.token))
{
ast2 = new ConstantWrapper(Microsoft.JScript.Convert.ToNumber(this.currentToken.GetCode(), true, true, Microsoft.JScript.Missing.Value), this.currentToken.Clone());
((ConstantWrapper) ast2).isNumericLiteral = true;
}
else
{
this.ReportError(JSError.NoMemberIdentifier);
ast2 = new IdentifierLiteral("_#Missing_Field#_" + s_cDummyName++, this.CurrentPositionContext());
}
ASTList list4 = new ASTList(ast2.context.Clone());
this.GetNextToken();
this.noSkipTokenSet.Add(NoSkipTokenSet.s_ObjectInitNoSkipTokenSet);
try
{
try
{
if (JSToken.Colon != this.currentToken.token)
{
this.ReportError(JSError.NoColon, true);
elem = this.ParseExpression(true);
}
else
{
this.GetNextToken();
elem = this.ParseExpression(true);
}
list4.Append(ast2);
list4.Append(elem);
list3.Append(list4);
if (JSToken.RightCurly == this.currentToken.token)
{
goto Label_0830;
}
if (JSToken.Comma == this.currentToken.token)
{
this.GetNextToken();
}
else
{
if (this.scanner.GotEndOfLine())
{
this.ReportError(JSError.NoRightCurly);
}
else
{
this.ReportError(JSError.NoComma, true);
}
this.SkipTokensAndThrow();
}
}
catch (RecoveryTokenException exception4)
{
if (exception4._partiallyComputedNode != null)
{
elem = exception4._partiallyComputedNode;
list4.Append(ast2);
list4.Append(elem);
list3.Append(list4);
}
if (this.IndexOfToken(NoSkipTokenSet.s_ObjectInitNoSkipTokenSet, exception4) == -1)
{
exception4._partiallyComputedNode = new ObjectLiteral(context2, list3);
throw exception4;
}
if (JSToken.Comma == this.currentToken.token)
{
this.GetNextToken();
}
if (JSToken.RightCurly == this.currentToken.token)
{
goto Label_0830;
}
}
goto Label_05C9;
}
finally
{
this.noSkipTokenSet.Remove(NoSkipTokenSet.s_ObjectInitNoSkipTokenSet);
}
goto Label_0830;
}
case JSToken.Null:
canBeAttribute = false;
expression = new NullLiteral(this.currentToken.Clone());
goto Label_0956;
case JSToken.True:
canBeAttribute = false;
expression = new ConstantWrapper(true, this.currentToken.Clone());
goto Label_0956;
case JSToken.False:
canBeAttribute = false;
expression = new ConstantWrapper(false, this.currentToken.Clone());
goto Label_0956;
case JSToken.This:
canBeAttribute = false;
expression = new ThisLiteral(this.currentToken.Clone(), false);
goto Label_0956;
case JSToken.Identifier:
expression = new Lookup(this.scanner.GetIdentifier(), this.currentToken.Clone());
goto Label_0956;
case JSToken.StringLiteral:
canBeAttribute = false;
expression = new ConstantWrapper(this.scanner.GetStringLiteral(), this.currentToken.Clone());
goto Label_0956;
case JSToken.IntegerLiteral:
{
canBeAttribute = false;
object obj2 = Microsoft.JScript.Convert.LiteralToNumber(this.currentToken.GetCode(), this.currentToken);
if (obj2 == null)
{
obj2 = 0;
}
expression = new ConstantWrapper(obj2, this.currentToken.Clone());
((ConstantWrapper) expression).isNumericLiteral = true;
goto Label_0956;
}
case JSToken.NumericLiteral:
{
canBeAttribute = false;
string str = isMinus ? ("-" + this.currentToken.GetCode()) : this.currentToken.GetCode();
expression = new ConstantWrapper(Microsoft.JScript.Convert.ToNumber(str, false, false, Microsoft.JScript.Missing.Value), this.currentToken.Clone());
((ConstantWrapper) expression).isNumericLiteral = true;
goto Label_0956;
}
case JSToken.LeftParen:
canBeAttribute = false;
this.GetNextToken();
this.noSkipTokenSet.Add(NoSkipTokenSet.s_ParenExpressionNoSkipToken);
try
{
expression = this.ParseExpression();
if (JSToken.RightParen != this.currentToken.token)
{
this.ReportError(JSError.NoRightParen);
}
}
catch (RecoveryTokenException exception)
{
if (this.IndexOfToken(NoSkipTokenSet.s_ParenExpressionNoSkipToken, exception) == -1)
{
throw exception;
}
expression = exception._partiallyComputedNode;
}
finally
{
this.noSkipTokenSet.Remove(NoSkipTokenSet.s_ParenExpressionNoSkipToken);
}
if (expression == null)
{
this.SkipTokensAndThrow();
}
goto Label_0956;
case JSToken.LeftBracket:
canBeAttribute = false;
context = this.currentToken.Clone();
list2 = new ASTList(this.currentToken.Clone());
this.GetNextToken();
if ((this.currentToken.token != JSToken.Identifier) || (this.scanner.PeekToken() != JSToken.Colon))
{
goto Label_0561;
}
this.noSkipTokenSet.Add(NoSkipTokenSet.s_BracketToken);
try
{
try
{
if (this.currentToken.GetCode() == "assembly")
{
this.GetNextToken();
this.GetNextToken();
return new AssemblyCustomAttributeList(this.ParseCustomAttributeList());
}
this.ReportError(JSError.ExpectedAssembly);
this.SkipTokensAndThrow();
}
catch (RecoveryTokenException exception2)
{
exception2._partiallyComputedNode = new Block(context);
return exception2._partiallyComputedNode;
}
goto Label_0561;
}
finally
{
if (this.currentToken.token == JSToken.RightBracket)
{
this.errorToken = null;
this.GetNextToken();
}
this.noSkipTokenSet.Remove(NoSkipTokenSet.s_BracketToken);
}
goto Label_046D;
case JSToken.Divide:
{
canBeAttribute = false;
string pattern = this.scanner.ScanRegExp();
if (pattern == null)
{
break;
}
bool flag2 = false;
try
{
new Regex(pattern, RegexOptions.ECMAScript);
}
catch (ArgumentException)
{
pattern = "";
flag2 = true;
}
string flags = this.scanner.ScanRegExpFlags();
if (flags == null)
{
expression = new RegExpLiteral(pattern, null, this.currentToken.Clone());
}
else
{
try
{
expression = new RegExpLiteral(pattern, flags, this.currentToken.Clone());
}
catch (JScriptException)
{
expression = new RegExpLiteral(pattern, null, this.currentToken.Clone());
flag2 = true;
}
}
if (flag2)
{
this.ReportError(JSError.RegExpSyntax, true);
}
goto Label_0956;
}
}
goto Label_0881;
}
if (token != JSToken.Super)
{
if (token == JSToken.PreProcessorConstant)
{
canBeAttribute = false;
expression = new ConstantWrapper(this.scanner.GetPreProcessorValue(), this.currentToken.Clone());
goto Label_0956;
}
goto Label_0881;
}
canBeAttribute = false;
expression = new ThisLiteral(this.currentToken.Clone(), true);
goto Label_0956;
Label_046D:
if (JSToken.Comma != this.currentToken.token)
{
this.noSkipTokenSet.Add(NoSkipTokenSet.s_ArrayInitNoSkipTokenSet);
try
{
list2.Append(this.ParseExpression(true));
if (JSToken.Comma != this.currentToken.token)
{
if (JSToken.RightBracket != this.currentToken.token)
{
this.ReportError(JSError.NoRightBracket);
}
goto Label_0573;
}
}
catch (RecoveryTokenException exception3)
{
if (exception3._partiallyComputedNode != null)
{
list2.Append(exception3._partiallyComputedNode);
}
if (this.IndexOfToken(NoSkipTokenSet.s_ArrayInitNoSkipTokenSet, exception3) == -1)
{
context.UpdateWith(this.CurrentPositionContext());
exception3._partiallyComputedNode = new ArrayLiteral(context, list2);
throw exception3;
}
if (JSToken.RightBracket == this.currentToken.token)
{
goto Label_0573;
}
}
finally
{
this.noSkipTokenSet.Remove(NoSkipTokenSet.s_ArrayInitNoSkipTokenSet);
}
}
else
{
list2.Append(new ConstantWrapper(Microsoft.JScript.Missing.Value, this.currentToken.Clone()));
}
this.GetNextToken();
Label_0561:
if (JSToken.RightBracket != this.currentToken.token)
{
goto Label_046D;
}
Label_0573:
context.UpdateWith(this.currentToken);
expression = new ArrayLiteral(context, list2);
goto Label_0956;
Label_0830:
list3.context.UpdateWith(this.currentToken);
context2.UpdateWith(this.currentToken);
expression = new ObjectLiteral(context2, list3);
goto Label_0956;
Label_0881:
str6 = JSKeyword.CanBeIdentifier(this.currentToken.token);
if (str6 == null)
{
if (this.currentToken.token == JSToken.BitwiseAnd)
{
this.ReportError(JSError.WrongUseOfAddressOf);
this.errorToken = null;
this.GetNextToken();
return this.ParseLeftHandSideExpression(isMinus, ref canBeAttribute, warnForKeyword);
}
this.ReportError(JSError.ExpressionExpected);
this.SkipTokensAndThrow();
goto Label_0956;
}
if (warnForKeyword)
{
switch (this.currentToken.token)
{
case JSToken.Boolean:
case JSToken.Byte:
case JSToken.Char:
case JSToken.Double:
case JSToken.Float:
case JSToken.Int:
case JSToken.Long:
case JSToken.Short:
case JSToken.Void:
goto Label_08FC;
}
this.ForceReportInfo(JSError.KeywordUsedAsIdentifier);
}
Label_08FC:
canBeAttribute = false;
expression = new Lookup(str6, this.currentToken.Clone());
Label_0956:
if (!flag)
{
this.GetNextToken();
}
return this.MemberExpression(expression, newContexts, ref canBeAttribute);
}
