Extended Metaprogramming Library
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README.md

mplex

http://github.com/frsyuki/mplex/

Overview

mplex is an Extended Metaprogramming Library.

Requirements

  • ruby >= 1.8

Installation

Use ./configure or rubygems.

Install using ./configure: ./bootstrap ./configure make make install

Install using rubygems: gem build mplex.gemspec gem install mplex-*.gem

Usage

Usage: mplex [options] input...
    -c file                          context ruby script
    -o file                          output file
    -r library                       load library
    -x                               print ruby script

Example

Simple

%0.upto(4) do |num|
class Test[%num%] {
public:
    %num.times do |i|
    int member{{i}};
    %end

    %if num % 2 == 0
    int even;
    %end
};
%end

"{{...}}" is same as "[%...%]".

Simple with advanced syntax

%0.upto(4) do |num|
class Test[%num%] {
public:
    int member{{i}};  %|i| num.times
    int even;  %> if num % 2 == 0
};
%end

Macro

%def abc(ns)
namespace [%ns%] {
  % %w[A B C].each do |a|
  % yield a
  % end
}
%end

%abc("name") do |a|
void func[%a%]();
%end

Context script

rpc.rb: { "Get" => { "std::string" => "key", "uint32_t" => "flags", },

    "Put" => {
        "std::string" => "key",
        "std::string" => "value",
    },
}

rpc.hmpl: %self.each_pair do |name, args| void %name%%] ); %end

run: mplex -c rpc.rb rpc.hmpl -o rpc.h

Makefile

source tree: README src/ src/subdir/ src/Makefile.am src/mplex # put mplex script here src/myapp.hmpl # myapp.hmpl -> myapp.h src/myapp.ccmpl # myapp.ccmpl -> myapp.cc

Makefile.am: MPLEX = ruby $(abs_srcdir)/mplex export MPLEX

PREP_SOURCE = myapp.hmpl myapp.ccmpl
PREP_TARGET = $(PREP_SOURCE:mpl=)
EXTRA_DIST = $(PREP_SOURCE)

%.h: %.hmpl
    $(MPLEX) $< -o $@

%.cc: %.ccmpl
    $(MPLEX) $< -o $@

prep: $(PREP_TARGET)
    cd subdir && $(MAKE) prep

prepc:
    rm -f $(PREP_TARGET)
    cd subdir && $(MAKE) prepc

License

Copyright (c) 2009-2011 FURUHASHI Sadayuki

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.