* Make the library modular usable.
* Switch to library requirements instead of source. As source puts extra source in install targets.
* Add wave tool build to all target.
* Add missing NO_LIB usage requirements.
* Add requires-b2 check to top-level build file.
* Bump B2 require to 5.2
* Change all <source> references to <library>.
* Move inter-lib dependencies to a project variable and into the build targets.
* Update build deps.
* Update marker before and after fill() operation in cpplexer
* A basic test case for trigraph "pound" (octothorpe) on fill boundary (detects the marker issue)
This change resolves#202
---------
Co-authored-by: Chris Chisolm <chris_chisolm@intuit.com>
Co-authored-by: Jeff Trull <edaskel@att.net>
At some point in the past the handling for #if and #ifdef diverged. The code that handles emitting a line directive when a conditional section is skipped worked for #if but not ifdef/ifndef.
This problem was not observable when the eat_whitespace hooks were used instead of the default_preprocessing hooks, because the former
signals skipped newlines through the may_skip_whitespace hook, hiding the problem. Furthermore, the majority of Wave tests use the eat_whitespace hooks, so it wasn't visible there.
This change restores ifdef/ifndef to the same section as #if, so any changes to conditional handling will happen uniformly. Also, a test case is added to cover the default hooks and this particular case.
* Pass tests by matching lexertl blank handling
* Remedial improvement to position tracking to avoid exception
* Fix token statistics sample's count map index calculation
* Add xlex to test suite
Also, prune includes somewhat.
* Introduce support for C++20 preprocessor features
- add __VA_OPT__ feature to variadic macros
- allow supplying 0 variadic arguments in more cases
- add related unit tests
