Mike Gerwitz
9fb2169a06
There's a lot of documentation on this in the commit itself, but this stems from a) frustration with trying to understand how the system needs to operate with all of the objects involved; and b) recognizing that if I'm having difficulty, then others reading the system later on (including myself) and possibly looking to improve upon it are going to have a whole lot of trouble. Identifier scope is something I've been mulling over for years, and more formally for the past couple of months. This finally begins to formalize that, out of frustration with package imports. But it will be a weight lifted off of me as well, with issues of scope always looming. This demonstrates a declarative means of testing for scope by scanning the entire graph in tests to determine where an identifier has been scoped. Since no such scoping has been implemented yet, the tests demonstrate how they will look, but otherwise just test for current behavior. There is more existing behavior to check, and further there will be _references_ to check, as they'll also leave a trail of scope indexing behind as part of the resolution process. See the documentation introduced by this commit for more information on that part of this commit. Introducing the graph scanning, with the ASG's static assurances, required more lowering of dynamic types into the static types required by the API. This was itself a confusing challenge that, while not all that bad in retrospect, was something that I initially had some trouble with. The documentation includes clarifying remarks that hopefully make it all understandable. DEV-13162 |
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benches | ||
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Cargo.lock | ||
Cargo.toml | ||
Makefile.am | ||
README.md | ||
autogen.sh | ||
bootstrap | ||
conf.sh.in | ||
configure.ac | ||
rustfmt.toml |
README.md
TAME in Rust (TAMER)
TAME was written to help tame the complexity of developing comparative insurance rating systems. This project aims to tame the complexity and performance issues of TAME itself. TAMER is therefore more tame than TAME.
TAME was originally written in XSLT. For more information about the
project, see the parent README.md
.
Building
To bootstrap from the source repository, run ./bootstrap
.
To configure the build for your system, run ./configure
. To build, run
make
. To run tests, run make check
.
You may also invoke cargo
directly, which make
will do for you using
options provided to configure
.
Note that the default development build results in terrible runtime performance! See [#Build Flags][] below for instructions on how to generate a release binary.
Build Flags
The environment variable CARGO_BUILD_FLAGS
can be used to provide
additional arguments to cargo build
when invoked via make
. This can be
provided optionally during configure
and can be overridden when invoking
make
. For example:
# release build
$ ./configure && make CARGO_BUILD_FLAGS=--release
$ ./configure CARGO_BUILD_FLAGS=--release && make
# dev build
$ ./configure && make
$ ./configure CARGO_BUILD_FLAGS=--release && make CARGO_BUILD_FLAGS=
Hacking
This section contains advice for those developing TAMER.
Running Tests
Developers should be using test-driven development (TDD). make check
will
run all necessary tests.
Code Format
Rust provides rustfmt
that can automatically format code for you. This
project mandates its use and therefore eliminates personal preference in
code style (for better or worse).
Formatting checks are run during make check
and, on failure, will output
the diff that would be applied if you ran make fmt
(or make fix
); this
will run cargo fmt
for you (and will use the binaries configured via
configure
).
Since developers should be doing test-driven development (TDD) and therefore
should be running make check
frequently, the hope is that frequent
feedback on formatting issues will allow developers to quickly adjust their
habits to avoid triggering formatting errors at all.
If you want to automatically fix formatting errors and then run tests:
$ make fmt check
Benchmarking
Benchmarks serve two purposes: external integration tests (which are subject
to module visibility constraints) and actual benchmarking. To run
benchmarks, invoke make bench
.
Note that link-time optimizations (LTO) are performed on the binary for benchmarking so that its performance reflects release builds that will be used in production.
The configure
script will automatically detect whether the test
feature
is unstable (as it was as of the time of writing) and, if so, will
automatically fall back to invoking nightly (by running cargo +nightly bench
).
If you do not have nightly, run you install it via rustup install nightly
.