Simplify the generator logic a bit by only creating one
ParserKeywords.cpp file, and create either source code for the library
or for the test. This is faster to compile serially, but is not possible
to compile in parallel. Still, it's a fair simplification, and clarifes
the makefile quite a bit, and makes dependencies and generation clearer.
Every header is self-contained and includes only what it must to
function, relying on users include what they need in source files,
adopting a pay-what-you-use model (in particular for internal
dependencies).
In order to reduce parsing load on clients, the generated ParserKeywords
now come in their own sorted-by-first-letter files, so that inclusion of
the entire tree is unnecessary when only a handful of keywords will do.
This also applies to the generated source code (which is pretty heavy to
compile), which now is split into multiple files to enable parallel
builds.
With this commit the generation of built in keywords is completely
changed. The most important changes include:
1) We have autogenerated a class for each keyword in the new
ParserKeywords { ... } namespace.
2) The autogenerated classes derive from ParserKeyword, and the
default constructor will build of a fully initialized
ParserKeyword instance, i.e. the keyword used to parse the EQUIL
keyword can be instantiated as simple as:
ParserKeywords::EQUIL kw;
3) The generated keywords have built in static constants for keyword
and item names, and item default values. That way it should be
possible for the compiler to catch trivial errors like trying to
access the keyword "PoRO"; also the the access to default values
means that properties can be initialized without actually
insantiating a DeckKeyword.
4) Two new classes Generator/KeywordLoader and
Generator/KeywordGenerator have been created, with the help of
these classes the keyword generation code is significantly
simplified.
