Class: Nymph::Generate::Generator

Inherits:
Object
  • Object
show all
Defined in:
lib/nymph/generate/generator.rb

Instance Method Summary collapse

Instance Method Details

#cullNonScriptableFiles(files) ⇒ Object 



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# File 'lib/nymph/generate/generator.rb', line 24

def cullNonScriptableFiles files
  h_files = []

  files.each do |file|
    if file =~ /\A.*\.hp{2}?\Z/
      h_files << file
    end
  end

  scriptable_files = []
  scriptable_filenames = []
  h_files.each do |filename|
    file = File.readlines(filename).join("")

    if file =~ /\s*\/\/=\s*SCRIPTABLE\s*$/
      scriptable_filenames << filename
      scriptable_files << file
    end
  end

  return scriptable_files, scriptable_filenames
end

#extractBaseClasses(file) ⇒ Object 



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# File 'lib/nymph/generate/generator.rb', line 68

def extractBaseClasses file
  base_class_regex = /\/\/=\s*SCRIPTABLE\s*BASES(.*)$/

  matches = base_class_regex.match(file)

  if matches != nil
    base_classes = matches.captures[0].split(" ").collect {|base| base.strip }
    return base_classes
  else
    return nil
  end
end

#extractClassNameAndBody(file) ⇒ Object 



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# File 'lib/nymph/generate/generator.rb', line 58

def extractClassNameAndBody file
  class_regex = /\/\/=\sSCRIPTABLE.*(\/\/=\sSCRIPTABLE\sBASES.*$|\s*)^(?!enum)\s*class\s+([a-zA-Z]+)[^;]*$.*\/\/=\s*BEGIN\s*SCRIPTABLE(.*)\/\/=\s*END\s*SCRIPTABLE.*?}/m
  matches = class_regex.match(file)
  if matches != nil
    return matches.captures[1], matches.captures[2]
  else
    return nil
  end
end

#extractEnums(file_text) ⇒ Object 



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# File 'lib/nymph/generate/generator.rb', line 109

def extractEnums file_text
  enums = {}

  scriptable_enum_regex = /\s*\/\/=\s*SCRIPTABLE\s*ENUM\s+(\/\*.*?\*\/)\s*\senum\s*[clas]*\s+(\w+)(\W*|\s*:\s*[a-zA-Z ]+){(.*?)};/m

  class_regex = /^(?!enum)\s*class\s+([a-zA-Z]+).*/

  matches = file_text.scan(scriptable_enum_regex)
  class_matches = class_regex.match(file_text)

  if matches != []
    matches.each do |match|
      name = match[1]

      if class_matches != nil && file_text.index(class_matches[0]) < file_text.index(/\/\/=\s*SCRIPTABLE\s*ENUM\s*/)
        name = class_matches.captures[0] + "::" + name
      end

      args = match[3].split(",").collect {|val| val.strip }

      enums[name] = args
    end
  end

  return enums
end

#extractMethods(text, full_text) ⇒ Object 



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# File 'lib/nymph/generate/generator.rb', line 81

def extractMethods text, full_text
  methods = {}
  text = text.split "\n"

  function_regex = /([^:]*?)?\s+(\w*?)\((.*?),?\)\s*.*$/

  template_types = []
  text.each do |line|
    matches = function_regex.match(line)
    if !line.include?("= delete") && matches != nil
      type = matches.captures[0].strip
      name = matches.captures[1].strip
      args = matches.captures[2].strip
      overloaded = full_text.scan(/\s#{Regexp.quote(name)}\(/).count > 1
      static = line.include?("static ")


      arg_list = matches.captures[2].split(",").map { |a| a.split(/\s=/)[0] }
      if(methods[name] == nil)
        methods[name] = [[type, arg_list, overloaded, static]]
      else
        methods[name] << [type, arg_list, overloaded, static]
      end
    end
  end
  return methods
end

#extractNamespace(file) ⇒ Object 



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# File 'lib/nymph/generate/generator.rb', line 47

def extractNamespace file
  namespace_regex = /\s*namespace\s+(\w+)\s*{\s*/
  matches = file.scan(namespace_regex)

  if matches.size > 0
    return matches.join("::")
  else
    return nil
  end
end

#generateEnumModule(enum_name, enum_contents) ⇒ Object 



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# File 'lib/nymph/generate/generator.rb', line 194

def generateEnumModule enum_name, enum_contents
  get_module = %?chaiscript::ModulePtr get#{enum_name.split("::").join("")}Module() {
    chaiscript::ModulePtr module = std::make_shared<chaiscript::Module>();
    std::vector<std::pair<unsigned int, std::string>> vec = {?

  enum_contents.each do |c|
    get_module += "{ #{enum_name.split('::').size > 1 ? enum_name.split("::")[0] + "::" : ""}#{c}, \"#{enum_name.split("::").join("_")}_#{c}\" },\n"
  end

  get_module += "};\n"

  get_module += "chaiscript::utility::add_class<#{enum_name}>(*module, std::string(\"#{enum_name.split("::").join("_")}\"),\n"
  get_module += "vec);\n"

  get_module += "return module;\n"
  get_module += "}\n"

  return get_module, "get#{enum_name.split("::").join("")}Module()"
end

#generateGetModule(class_name, metadata, base_classes) ⇒ Object 



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# File 'lib/nymph/generate/generator.rb', line 136

def generateGetModule class_name, metadata, base_classes
   constructors = []
   methods = []

   metadata.each do |func_name, func_meta|

    func_meta.each do |overload|
      args = overload[1].join(", ")
      #NO RETURN TYPE
      if overload[0].empty?
        constructors.push "chaiscript::constructor<#{class_name}(#{args})>(),"
      #RETURN TYPE
      else
        overload[0].slice!("static ")
        if overload[2] == false
          methods.push "chaiscript::fun(&#{class_name}::#{func_name}), \"#{overload[3]?class_name + "_" : ""}#{func_name}\""
        else
          methods.push "chaiscript::fun([](#{class_name}& c#{args.length > 0 ? ", " + args : ""}) { c.#{func_name}(#{args.length > 0 ? (args.split(", ").map { |a| a.split(" ")[-1]}).join(", ") : ""}); }), \"#{func_name}\""
          #methods.push "chaiscript::fun<#{overload[0]}, #{class_name}#{args.length > 0 ? ", " + args : ""}>(&#{class_name}::#{func_name}), \"#{func_name}\""
        end
      end
    end
   end

  get_module = %?chaiscript::ModulePtr get#{class_name}Module() {
    chaiscript::ModulePtr module = std::make_shared<chaiscript::Module>();

    chaiscript::utility::add_class<#{class_name}>(*module, std::string("#{class_name}"),
    ?

  get_module += "{\n"
  constructors.each do |c|
    get_module += c + "\n"
  end

  get_module += "},\n"

  get_module += "{\n"
  methods.each do |m|
    get_module += "{" + m + "},\n"
  end

  get_module.chomp! ","


  get_module += "});\n"

  if base_classes != nil
    base_classes.each do |b|
      get_module += "  module->add(chaiscript::base_class<#{b}, #{class_name}>());\n"
    end
  end
  get_module += "return module;\n"
  get_module += "}\n"

  return get_module, "get#{class_name}Module()"
end

#getAllBases(klass, names_to_bases) ⇒ Object 



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# File 'lib/nymph/generate/generator.rb', line 214

def getAllBases klass, names_to_bases
  bases = names_to_bases[klass]

  if bases != nil
    bases.each do |base|
      next_bases = getAllBases(base, names_to_bases)
      if next_bases != nil
        bases += getAllBases(base, names_to_bases)
      end
    end
  end

  return bases
end

#grabFiles(directory) ⇒ Object 



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# File 'lib/nymph/generate/generator.rb', line 4

def grabFiles directory
  puts "Directory: #{directory}"
  files = Dir.entries(directory)
  files.collect! { |f| directory + f }
  delete_files = []
  files.each do |file|
    if file =~ /.*\.\.?\Z/
      delete_files.push file
    elsif File.directory?(file)
      delete_files.push file
      files << grabFiles(file + "/")
      files.flatten!
    end
  end

  files.delete_if { |f| delete_files.count(f) > 0 }

  return files
end

#run(src_path, dst_path) ⇒ Object 



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# File 'lib/nymph/generate/generator.rb', line 229

def run src_path, dst_path
  puts "Running nymph-generate on path #{src_path}"
  files = grabFiles(src_path + "/")

  culled_files, culled_filenames = cullNonScriptableFiles(files)

  class_names_to_bodies = {}
  class_names_to_file_text = {}
  class_names_to_filenames =  {}
  class_names_to_base_classes = {}
  namespaces = []
  enums = {}
  enum_filenames = []

  culled_files.zip(culled_filenames).each do |file, filename|
    class_name, body = extractClassNameAndBody(file)
    namespace = extractNamespace(file)
    bases = extractBaseClasses(file)

    ems = extractEnums(file)
    if(ems != {})
      enums.merge! ems
      enum_filenames << filename
    end

    if(namespace != nil && namespaces.count(namespace) == 0)
      namespaces << namespace
    end

    if(class_name != nil)
      class_names_to_bodies[class_name] = body
      class_names_to_file_text[class_name] = file
      class_names_to_filenames[class_name] = filename
      class_names_to_base_classes[class_name] = bases
    end
  end

  #cascade up the bases
  ctb = class_names_to_base_classes.clone

  ctb.each do |klass, bases|
    if bases != nil
      bases.each do |base|
        if ctb[base] != nil
          class_names_to_base_classes[klass] += getAllBases(base, ctb)
          class_names_to_base_classes[klass].uniq!
        end
      end
    end
  end

  classes = {}

  class_names_to_bodies.each_pair do |key, value|
    classes[key] = extractMethods(value, class_names_to_file_text[key])
  end

  func_def_file = %?#ifndef GENERATED_REGISTRATIONS_H
  #define GENERATED_REGISTRATIONS_H
  //THIS FILE WAS GENERATED BY nymph-generate
  //DO NOT EDIT IT AS IT WILL BE OVERWRITTEN WHEN nymph-generate IS RUN AGAIN
  ?

  filenames = class_names_to_filenames.values | enum_filenames

  func_def_file += "#include <chaiscript/utility/utility.hpp>\n"
  func_def_file += "#include <vector>\n#include <map>\n"
  filenames.each do |fn|
    fn.slice! "./src/"
    func_def_file += "#include \"#{fn}\"\n"
  end


  func_def_file += "namespace generated {\n"

  namespaces.each do  |n|
    func_def_file += "  using namespace #{n};\n"
  end

  func_calls = []

  enums.each_pair do |name, vals|
    mod, func_name = generateEnumModule(name, vals)

    func_def_file += "\n#{mod}\n"
    func_calls << func_name
  end

  classes.each_pair do |name, meta|
    mod, func_name = generateGetModule(name, meta, class_names_to_base_classes[name])

    func_def_file += "\n#{mod}\n"
    func_calls << func_name
  end


  func_def_file += "void registerModules(std::shared_ptr<chaiscript::ChaiScript> chai) {\n"

  func_calls.each do |f|
    func_def_file += "chai->add(#{f});\n"
  end

  func_def_file += "}\n"
  func_def_file += "}\n"
  func_def_file += "#endif"

  if(!Dir.exists? dst_path)
    Dir.mkdir(dst_path)
  end

  puts "Writing #{dst_path}/generated_registrations.h"
  File.open("#{dst_path}/generated_registrations.h", "w") { |f| f.write(func_def_file) }
  puts "Wrote #{`cat #{dst_path}/generated_registrations.h | wc -l`.chomp!.strip!} lines!"
end