Mike Gerwitz
adc45d90df
This is the first parser generator for the parsing framework. I've been waiting quite a while to do this because I wanted to be sure that I understood how I intended to write the attribute parsers manually. Now that I'm about to start parsing source XML files, it is necessary to have a parser generator. Typically one thinks of a parser generator as a separate program that generates code for some language, but that is not always the case---that represents a lack of expressiveness in the language itself (e.g. C). Here, I simply use Rust's macro system, which should be a concept familiar to someone coming from a language like Lisp. This also resolves where I stand on parser combinators with respect to this abstraction: they both accomplish the exact same thing (composition of smaller parsers), but this abstraction doesn't do so in the typical functional way. But the end result is the same. The parser generated by this abstraction will be optimized an inlined in the same manner as the hand-written parsers. Since they'll be tightly coupled with an element parser (which too will have a parser generator), I expect that most attribute parsers will simply be inlined; they exist as separate parsers conceptually, for the same reason that you'd use parser combinators. It's worth mentioning that this awkward reliance on dead state for a lookahead token to determine when aggregation is complete rubs me the wrong way, but resolving it would involve reintroducing the XIR AttrEnd that I had previously removed. I'll keep fighting with myself on this, but I want to get a bit further before I determine if it's worth the tradeoff of reintroducing (more complex IR but simplified parsing). DEV-7145 |
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| design/tpl | ||
| doc | ||
| progtest | ||
| rater | ||
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| tamer | ||
| test | ||
| tools | ||
| .gitignore | ||
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| .rev-xmle | ||
| .rev-xmlo | ||
| COPYING | ||
| COPYING.FDL | ||
| HACKING | ||
| Makefile.am | ||
| README.md | ||
| RELEASES.md | ||
| VERSION.in | ||
| bootstrap | ||
| c1map.xsd | ||
| configure.ac | ||
| package-lock.json | ||
README.md
TAME
TAME is The Algebraic Metalanguage, a programming language and system of tools designed to aid in the development, understanding, and maintenance of systems performing numerous calculations on a complex graph of dependencies, conditions, and a large number of inputs.
This system was developed at Ryan Specialty Group (formerly LoVullo Associates) to handle the complexity of comparative insurance rating systems. It is a domain-specific language (DSL) that itself encourages, through the use of templates, the creation of sub-DSLs. TAME itself is at heart a calculator—processing only numerical input and output—driven by quantifiers as predicates. Calculations and quantifiers are written declaratively without concern for order of execution.
The system has powerful dependency resolution and data flow capabilities.
TAME consists of a macro processor (implementing a metalanguage), numerous compilers for various targets (JavaScript, HTML documentation and debugging environment, LaTeX, and others), linkers, and supporting tools. The input grammar is XML, and the majority of the project (including the macro processor, compilers, and linkers) is written in a combination of XSLT and Rust.
TAMER
Due to performance requirements, this project is currently being reimplemented in Rust. That project can be found in the tamer/ directory.
Documentation
Compiled documentation for the latest release is available via our GitLab mirror, which uses the same build pipeline as we do on our internal GitLab instance. Available formats are:
Getting Started
To get started, make sure Saxon version 9 or later is available and its path
set as SAXON_CP; that the path to hoxsl is set via HOXSL; and then run
the bootstrap script:
$ export SAXON_CP=/path/to/saxon9he.jar
$ export HOXSL=/path/to/hoxsl/root
$ ./boostrap
Running Test Cases
To run the test cases, invoke make check (or its alias, make test).
Testing Core Features
In order to run tests located at core/test/core/**, a supporting environment
is required. (e.g. mega rater). Inside a supporting rater, either check out a
submodule containing the core tests, or temporarily add them into the
submodule.
Build the core test suite summary page using:
$ make rater/core/test/core/suite.html
Visit the summary page in a web browser and click the Calculate Premium button. If all test cases pass, it will yield a value of $1.
Hacking
Information for TAME developers can be found in the file HACKING.
License
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.