LLVM backend h_int_range() support and some refactoring/cleanup

See merge request hammer/hammer!7

LLVM backend should let caller of llvm() in parser vtable handle setting up returns so we don't force one function per HParser

various minor cleanups

See merge request hammer/hammer!6

Also remove a couple of spelling and capitalization nits.  I did this
because I was reading the document and they bothered me.

It bothers me a little bit that I can't figure out how to free the
parser --- surely that is a thing that the bindings for other
languages need to do --- but storing a pointer to the parser in a
statically-allocated variable, as in base64.c, at least stops valgrind
from reporting the parser as a memory leak.

Obviously we don't care if examples/base64.c leaks memory before
exiting, but things like that are noise that make it hard to tell if
there's a real memory-leak problem somewhere else; it also sets a bad
example for code that someone might write modeled on the example.
This patch ensures that the example frees its allocations as it
should.

Fix segfault in base64 example with DEBUG

See merge request hammer/hammer!5

xentrac authored 5 years ago and Andrea Shepard committed 5 years ago

It was trying to dump the parse tree even when it was NULL due to parse
failure.  This was particularly a problem since earlier in the file it

Remove bogus HParser * constness and non-portable %lld format string; fixes issue 59

Closes #59

See merge request hammer/hammer!2