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The module
astprinter
is used to print AST in order to debug synthetic statements and expressions.It was quite limited.
This PR extends it to most Nit expressions and statements. The missing ones will be addressed in futures PR.
The PR also add a simple nit test program
syntax_expr.nit
that exhibits many syntactic constructions. It is used to test the astprinter through a test tooltest_astprinter
that (pretty?)-print given programs.