Instatiates a new function call expression
Puts the arguments and names into an ArgumentList for easily passing them around. The fields are still separate for backwards compatibility
Creates a new function call expression
don't enforce attributes (e.g. call @gc function in @nogc code)
true if this was in a debug statement
the first argument was pushed in here by a UFCS rewrite
The type for a unary expression is incompatible. Print error message.
Mark the operand as will never be dereferenced, which is useful info for @safe checks. Do before semantic() on operands rewrites them.