Commit Graph

2 Commits

Author SHA1 Message Date
Christian Rinderknecht
f795f1216a Bug fixing in the lexers and the parser. Started AST pretty-printer.
LexToken, AST: Tiny refactoring.

Bug: Added the making of the AST node PBytes.

Parser: The rule "pattern" was not properly stratified (the
constructor "PCons" was always produced, even when no consing was
done (now a fall-through to "core_pattern").

Bug: When sharing the lexers between Ligodity and Pascaligo, a
regression was introduced with the lexing of symbols. Indeed,
symbols specific to Ligodity (like "<>") and
Pascaligo (like "=/=") were scanned, but the
function "LexToken.mk_sym" for each only accepted their own,
yielding to an assertion to be invalidated. Fix: I created an
error "sym_err" now to gracefully handle that situation and
provide a hint to the programmer (to wit, to check the LIGO
syntax in use).

WIP: Started to write pretty-printing functions for the nodes of
the AST.

CLI: The option "--verbose=ast" now calls that function instead
of printing the tokens from the AST. When the pretty-printer is
finished, the option for printing the tokens will likely
be "--verbose=ast-tokens".
2019-10-12 23:42:26 +02:00
Sander
5bcf3cae6e Refactor Ligodity parser to use shared parser. 2019-09-27 13:33:25 +00:00