// Parse a left hand side expression.
private JNode LeftHandSideExpression()
{
JNode expr = MemberExpression();
JNode expr2;
while(token == JSToken.LeftParen ||
token == JSToken.LeftBracket ||
token == JSToken.AccessField)
{
if(token == JSToken.LeftParen)
{
// Parse a function call expression.
NextToken();
expr2 = ArgumentList();
if(token == JSToken.RightParen)
{
if(IsBuiltinCall(expr, "eval"))
{
expr = new JEval
(Context.BuildRange
(expr.context, tokenInfo),
expr2);
}
else if(IsBuiltinCall(expr, "print") &&
printSupported)
{
expr = new JPrint
(Context.BuildRange
(expr.context, tokenInfo),
expr2);
}
else
{
expr = new JCall
(Context.BuildRange(expr.context,
tokenInfo),
expr, expr2);
}
NextToken();
}
else
{
SyntaxError("`)' expected");
}
}
else if(token == JSToken.LeftBracket)
{
// Parse an array access expression.
NextToken();
expr2 = Expression();
if(token == JSToken.RightBracket)
{
expr = new JArrayAccess
(Context.BuildRange(expr.context,
tokenInfo),
expr, expr2);
NextToken();
}
else
{
SyntaxError("`]' expected");
}
}
else
{
// Parse a field access expression.
NextToken();
if(token == JSToken.Identifier)
{
expr = new JFieldAccess
(Context.BuildRange(expr.context,
tokenInfo),
expr, scanner.GetIdentifierName());
NextToken();
}
else
{
SyntaxError("identifier expected");
}
}
}
return expr;
}
// Parse a member expression.
private JNode MemberExpression()
{
JNode expr = null;
JNode expr2;
Context save;
switch(token)
{
case JSToken.Function:
{
// Inline function definition.
expr = FunctionExpression();
}
break;
case JSToken.New:
{
// Object construction, with arguments.
save = tokenInfo.MakeCopy();
NextToken();
expr = MemberExpression();
if(token == JSToken.LeftParen)
{
NextToken();
expr2 = Arguments();
if(token == JSToken.RightParen)
{
expr = new JNew(Context.BuildRange
(save, tokenInfo),
expr, expr2);
NextToken();
}
else
{
SyntaxError("`)' expected");
}
}
else
{
expr = new JNew(Context.BuildRange
(save, expr.context),
expr, null);
}
}
break;
default:
{
// Parse a primary expression.
expr = PrimaryExpression();
}
break;
}
while(token == JSToken.LeftBracket ||
token == JSToken.AccessField)
{
if(token == JSToken.LeftBracket)
{
// Parse an array access expression.
NextToken();
expr2 = Expression();
if(token == JSToken.RightBracket)
{
expr = new JArrayAccess
(Context.BuildRange(expr.context,
tokenInfo),
expr, expr2);
NextToken();
}
else
{
SyntaxError("`]' expected");
}
}
else
{
// Parse a field access expression.
NextToken();
if(token == JSToken.Identifier)
{
expr = new JFieldAccess
(Context.BuildRange(expr.context,
tokenInfo),
expr, scanner.GetIdentifierName());
NextToken();
}
else
{
SyntaxError("identifier expected");
}
}
}
return expr;
}
