I was researching about the gcc compiler suite on wikipedia [here](http://en.wikipedia.org/wiki/GNU_Compiler_Collection#Front_ends), when this came up:

> 
> GCC started out using LALR parsers generated with Bison, but gradually switched to hand-written recursive-descent parsers; for C++ in 2004, and for C and Objective-C in 2006. Currently all front ends use hand-written recursive-descent parsers
> 
> 
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So by that last sentence, (and for as much as I trust wikipedia) I can definitely say that 
"C (gcc), C++ (g++), Objective-C, Objective-C++, Fortran (gfortran), Java (gcj), Ada (GNAT), Go (gccgo), Pascal (gpc),... Mercury, Modula-2, Modula-3, PL/I, D (gdc), and VHDL (ghdl)" are all front-ends that no longer use a parser generator. That is, they all use hand-written parsers.

My question then is, is this practice ubiquitous? Specifically, I'm looking for exact answers to "does the standard/official implementation of x have a hand-written parser" for x in [Python, Swift, Ruby, Java, Scala, ML, Haskell]? (Actually, information on any other languages is also welcome here.) I'm sure I can find this on my own after a lot of digging. But I'm also sure this is easily answerable by the community. Thanks!