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c69b7e4b9a
compiler/typecheck_error_undef.m:
If we are reporting an error for a reference to an undefined predicate,
check whether any predicates exist whose names are "close enough"
to the name of the referenced predicate, and if yes, add to the
error message a line containing "(Did you mean x, y or z?)".
(Doing the same for references to undefined functions is future work.
The two are separate because things that look like function references
can also refer to e.g. data constructors.)
library/edit_distance.m:
Add this new module to implement the "close enough" check.
This new module is similar to the existing edit_seq.m module,
but it is designed to serve different requirements, and it seems to me
to be far from trivial to write code to meet both sets of requirements
at once.
library/library.m:
library/MODULES_DOC:
Include the new module in the standard library.
NEWS.md:
Announce the new library module.
tests/hard_coded/edit_distance_test_closest.{m,exp}:
tests/hard_coded/edit_distance_test_cost.{m,exp}:
Two new test cases, each of which tests one of the two predicates
exported by the new library module.
tests/hard_coded/Mmakefile:
Enable the new test cases.
tests/invalid/qual_basic_test2.err_exp:
tests/invalid/types2.err_exp:
tests/invalid/undef_symbol.err_exp:
tests/invalid_submodules/undef_mod_qual.err_exp:
Expect the new "did you mean" additions to error messages.
4 lines
173 B
Plaintext
4 lines
173 B
Plaintext
undef_mod_qual.m:015: In clause for predicate `main'/2:
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undef_mod_qual.m:015: error: undefined predicate `foo.bletchx'/2.
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undef_mod_qual.m:015: (Did you mean `bletch'?)
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