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109 lines
4.2 KiB
Erlang
109 lines
4.2 KiB
Erlang
%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
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%% ex: ts=4 sw=4 et
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%% -------------------------------------------------------------------
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%%
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%% rebar: Erlang Build Tools
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%%
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%% Copyright (c) 2010 Anthony Ramine (nox@dev-extend.eu),
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%%
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%% Permission is hereby granted, free of charge, to any person obtaining a copy
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%% of this software and associated documentation files (the "Software"), to deal
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%% in the Software without restriction, including without limitation the rights
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%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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%% copies of the Software, and to permit persons to whom the Software is
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%% furnished to do so, subject to the following conditions:
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%%
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%% The above copyright notice and this permission notice shall be included in
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%% all copies or substantial portions of the Software.
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%%
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%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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%% THE SOFTWARE.
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%% -------------------------------------------------------------------
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%% The rebar_abnfc_compiler module is a plugin for rebar that compiles
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%% ABNF grammars into parsers. By default, it compiles all src/*.abnf
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%% to src/*.erl.
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%%
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%% Configuration options should be placed in rebar.config under
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%% 'abnfc_opts'. Available options include:
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%%
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%% doc_root: where to find the ABNF grammars to compile
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%% "src" by default
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%%
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%% out_dir: where to put the generated files.
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%% "src" by default
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%%
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%% source_ext: the file extension the ABNF grammars have.
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%% ".abnf" by default
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%%
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%% module_ext: characters to append to the parser's module name
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%% "" by default
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-module(rebar_abnfc_compiler).
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-export([compile/2]).
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-include("rebar.hrl").
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%% ===================================================================
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%% Public API
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%% ===================================================================
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compile(Config, _AppFile) ->
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DtlOpts = abnfc_opts(Config),
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rebar_base_compiler:run(Config, [],
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option(doc_root, DtlOpts),
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option(source_ext, DtlOpts),
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option(out_dir, DtlOpts),
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option(module_ext, DtlOpts) ++ ".erl",
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fun compile_abnfc/3).
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%% ===================================================================
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%% Internal functions
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%% ===================================================================
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abnfc_opts(Config) ->
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rebar_config:get(Config, abnfc_opts, []).
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option(Opt, DtlOpts) ->
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proplists:get_value(Opt, DtlOpts, default(Opt)).
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default(doc_root) -> "src";
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default(out_dir) -> "src";
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default(source_ext) -> ".abnf";
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default(module_ext) -> "".
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abnfc_is_present() ->
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code:which(abnfc) =/= non_existing.
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compile_abnfc(Source, _Target, Config) ->
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case abnfc_is_present() of
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false ->
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?CONSOLE(
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<<"~n===============================================~n"
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" You need to install abnfc to compile ABNF grammars~n"
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" Download the latest tarball release from github~n"
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" https://github.com/nygge/abnfc~n"
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" and install it into your erlang library dir~n"
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"===============================================~n~n">>, []),
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?FAIL;
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true ->
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AbnfcOpts = abnfc_opts(Config),
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SourceExt = option(source_ext, AbnfcOpts),
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Opts = [noobj,
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{o, option(out_dir, AbnfcOpts)},
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{mod, filename:basename(Source, SourceExt) ++
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option(module_ext, AbnfcOpts)}],
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case abnfc:file(Source, Opts) of
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ok -> ok;
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Error ->
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?CONSOLE("Compiling grammar ~s failed:~n ~p~n",
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[Source, Error]),
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?FAIL
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end
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end.
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