For some reason, the problem was manifesting only inside the VM, it was
detecting an attempt to read past the string end (i.e. the formerly
accessible null byte).
To catch such errors, strutils now performs static tests too.
I've solved the problem by re-implementing the Boyer-Moore algotihm
in a cleaner way and I took the opportunity to make some other
optimisations to strutils.
This resulted in a codegen error in C++ mode, because the generic
types were not defined in modules where calls requiring downcasts
were used (generating a downcast forces the inclusion of the full
definition of the involved types).
This enables macros accepting arbitrary keyword arguments:
log("foo", prop1 = "bar", prop2 = "baz")
As an added bonus, simple templates with varargs arguments can now
forward their params to procs accepting keyword arguments.
The example is a proof-of-concept logging library, allowing you to define
lexically-scoped environments where certain logging attributes are applied
automatically to all logging statements.
fixes tmacro1 (use of `bindSym` inside static blocks)
This allows you to pass a template or a macro to another macro
which can then inspect the implementation of the former template/macro
using `getImpl`.
Since templates can be freely redefined, this allows you to treat
their symbols as compile-time variables that have lexical scope.
A motivating PoC example for a logging library taking advantage of
this will be provided in the next commit.
Implementation details:
* The name of a template or a macro will be consider a symbol if
the template/macro requires parameters
* For parameterless templates/macros, you can use `bindSym`, which
was extended to also work outside of compile-time procs.
