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README 2013-09-01 2.0 kB 0
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"mx" 01.09.2012 0.2 NPAPI plugin for the Mozilla Firefox web browser 23.08.2013 0.1 Initial release "mx" is a command line test driver for "libmx" (see below) evaluating both the type and the value of an lambda calculus expression (http://en.wikipedia.org/wiki/Lambda_calculus) provided by the user. "libnpmx.so" ("npmx.dll" on MS Windows) is a NPAPI plugin for the Mozilla Firefox web browser (http://en.wikipedia.org/wiki/Firefox) based on "libmx". "libmx" provides a framework for dealing with (extended and optional typed) lambda calculus expressions. The abstract syntax supported by the framework is as follows (cf. "struct mx" in "mx.h"): // expressions: ex = ex_num | ex_id | ex_bi | ex_br | ex_lam | ex_let | ex_ref ex_num = NUM // integer number ex_id = ID // identifier ex_bi = OP ARITY tp // build-in operation on integers ex_br = ex ex ex // if-then-else branching ex_lam = ID tp? ex // optional typed lambda abstraction ex_let = ID tp? ex ex // optional typed (recursive) let ex_ref = ex? // updatable reference (optional empty) // types: tp = tp_cons | tp_op | tp_var tp_cons = CONS // type constant (MX_INT or MX_BOOL) tp_op = SYM tp tp // type operator (MX_ARR, i.e. "=>") tp_var = ID GEN tp? tp? // type variable (optionally linked to a // representative and a fresh instance) For the concrete syntax supported by "mx" cf. "mx_parser.y". Among other features the framework provides o a template instantiation machine for evaluating the value of an lambda calculus expression, o a template instantiation machine for evaluating the Hindley-Milner type (http://en.wikipedia.org/wiki/Hindley-Milner) of an lambda calculus expression, and o reference counter based memory management for lambda calculus expressions and types. "libmx" is written in C (C99).
Source: README, updated 2013-09-01

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