Class: Ninja::File

Inherits:
Object
  • Object
show all
Defined in:
lib/ninja/file.rb

Instance Method Summary collapse

Constructor Details

#initialize(path = nil, &block) ⇒ File

Returns a new instance of File.



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# File 'lib/ninja/file.rb', line 3

def initialize(path=nil, &block)
  @variables = []
  @rules = []
  @builds = []
  @defaults = []
  Delegator.new(self, :except => [:save]).instance_eval(&block) if block_given?
  self.save(path) if path
end

Instance Method Details

#alias(from, to) ⇒ Object 



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# File 'lib/ninja/file.rb', line 28

def alias(from, to)
  # Pretty clever, huh?
  @builds.push(Ninja::Build.new(:rule => 'phony', :inputs => [*to], :output => from))
end

#build(rule, outputs_to_inputs = {}) ⇒ Object 



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# File 'lib/ninja/file.rb', line 22

def build(rule, outputs_to_inputs={})
  outputs_to_inputs.each do |output, inputs|
    @builds.push(Ninja::Build.new(:rule => rule, :inputs => [*inputs], :output => output))
  end
end

#defaults(outputs) ⇒ Object 



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# File 'lib/ninja/file.rb', line 33

def defaults(outputs)
  # TODO(mtwilliams): Accept variables (\$[\w]|\$\{[\w]\}).
  # raise "Expected output(s) to be paths." unless [*outputs].all?{|output| /\A(?:[-\w\.]+\/?)+\z/.match(output)}
  @defaults.push(*outputs)
end

#rule(name, command, opts = {}) ⇒ Object 



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# File 'lib/ninja/file.rb', line 16

def rule(name, command, opts={})
  @rules.push(Ninja::Rule.new(:name => name,
                              :command => command,
                              :dependencies => opts[:dependencies]))
end

#save(path) ⇒ Object 



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# File 'lib/ninja/file.rb', line 39

def save(path)
  raise "Path not specified!" unless path
   # TODO(mtwilliams): Check if everything up to |path| exists.
  ::File.open(path, 'w') do |f|
    f.write "# This file was auto-generated by \"#{::File.basename($PROGRAM_NAME, ::File.extname($0))}\".\n"
    f.write "# Do not modify! Instead, modify the aforementioned program.\n\n"
    f.write "# We require Ninja >= 1.3 for `deps` and >= 1.5 for `msvc_deps_prefix`.\n"
    f.write "ninja_required_version = 1.5\n\n"

    @variables.each do |variable|
      # TODO(mtwilliams): Escape.
      f.write "#{variable.name} = #{variable.value}\n"
    end
    f.write "\n" unless @variables.empty?

    @rules.each do |rule|
      f.write "rule #{rule.name}\n"
      if rule.dependencies
        if (rule.dependencies == :gcc) or (rule.dependencies == :clang)
          f.write "  depfile = $out.d\n"
          f.write "  deps = gcc\n"
        elsif rule.dependencies == :msvc
          # TODO(mtwilliams): Handle non-English output.
          # f.write "  msvc_deps_prefix = Note: including file: \n"
          f.write "  deps = msvc\n"
        else
          f.write "  depfile = #{rule.dependencies}\n"
        end
      end
      f.write "  command = #{rule.command}\n\n"
    end

    @builds.each do |build|
      f.write "build #{build.output}: #{build.rule} #{build.inputs.join(' ')}\n"
    end

    unless @defaults.empty?
      f.write "\n" unless @builds.empty?
      f.write "default #{@defaults.join(' ')}\n" unless @defaults.empty?
    end

    # TODO(mtwilliams): Execute other files (via 'subninja').
    # TODO(mtwilliams): Specify pools, to optimize compilation times.
  end
end

#variable(name, value) ⇒ Object 



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# File 'lib/ninja/file.rb', line 12

def variable(name, value)
  @variables.push(Ninja::Variable.new(name, value))
end