Mike Gerwitz
fd3184c795
This exposes the internal rendering of `ListDisplayWrapper::fmt` such that we can output a list without actually creating a list. This is used in an upcoming change for =ele_parse!= so that Sum NTs can render the union of all the QNames that their constituent NTs match on, recursively, as a single list, without having to create an ephemeral collection only for display. If Rust supports const functions for arrays/Vecs in the future, we could generate this at compile-time, if we were okay with the (small) cost, but this solution seems just fine. But output may be even _more_ performant since they'd all be adjacent in memory. This is used in these secenarios: 1. Diagnostic messages; 2. Error messages (overlaps with #1); and 3. `Display::fmt` of the `ParseState`s themselves. The reason that we want this to be reasonably performant is because #3 results in a _lot_ of output---easily GiB of output depending on what is being traced. Adding heap allocations to this would make it even slower, since a description is generated for each individual trace. Anyway, this is a fairly simple solution, albeit a little bit less clear, and only came after I had tried a number of other different approaches related to recursively constructing QName lists at compile time; they weren't worth the effort when this was so easy to do. DEV-7145 |
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| .. | ||
| benches | ||
| build-aux | ||
| src | ||
| .gitignore | ||
| Cargo.lock | ||
| Cargo.toml | ||
| Makefile.am | ||
| README.md | ||
| autogen.sh | ||
| bootstrap | ||
| 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.