[antlr-interest] (third-party) Java 7 and C# 4+ compilers written in ANTLR

[Mark Farnell]

Is it true that the OpenJDK 7 javac is hand-written using Java without
using high-level language such as ANTLR and JavaCC?

If this is the case, are you aware of any projects / attempt for
third-party Java compiler implementation using ANTLR?

I mean not only the parser, but also AST manipulation, tree walking,
semantic checking and code generation all implemented using ANTLR,
rather than manual Java code.

Also are you aware of any third-party C# compilers (that takes C# code
and spits CIL code) written in ANTLR?

Thanks!

Mark