The Algebraic Metalanguage
 
 
 
 
 
 
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Mike Gerwitz 7e6cb2c948 tamer: ir::xir::Token::AttrEnd: New token type
The purpose of this token is to implement a lazy streaming attribute
collection operation without a token of lookup, which would complicate
parsing or require that a TokenStream provide a `peek` method.

This is only required for readers to produce, since readers will be feeding
data to parsers.  I have the writer ignoring it.  If you're looking back at
this commit, the question is whether this was a bad idea: it introduces
inconsistencies into the token stream depending on the context, which can be
confusing and error-prone.

The intent is to have the parser throw an explicit error if the new token is
missing in the context in which it is required, which will safely handle the
issue, but does defer it to runtime.  But only readers need auditing, and
there's only one XIR reader at the moment.

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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.