Class: Rgo::Compile

Inherits:
Object
  • Object
show all
Defined in:
lib/rgo/compile.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(statements) ⇒ Compile

Returns a new instance of Compile.



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# File 'lib/rgo/compile.rb', line 6

def initialize(statements)
  @statements = statements
  @functions = { private: [], public: [] }
  @function_access_type = :public
  @current_module = nil
  @aliases = {}
  @classes = []
  @function_to_module_map = {}
  @class_to_module_map = {}
  @next_func_type = nil
  @local_variables = []
  @next_instance_variable_type = nil
  @current_class = nil
end

Instance Attribute Details

#aliases ⇒ Object (readonly)

Returns the value of attribute aliases.



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# File 'lib/rgo/compile.rb', line 3

def aliases
  @aliases
end

#classes ⇒ Object (readonly)

Returns the value of attribute classes.



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# File 'lib/rgo/compile.rb', line 3

def classes
  @classes
end

#function_to_module_map ⇒ Object (readonly)

Returns the value of attribute function_to_module_map.



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# File 'lib/rgo/compile.rb', line 3

def function_to_module_map
  @function_to_module_map
end

#functions ⇒ Object (readonly)

Returns the value of attribute functions.



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# File 'lib/rgo/compile.rb', line 3

def functions
  @functions
end

Instance Method Details

#compile ⇒ Object 



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# File 'lib/rgo/compile.rb', line 21

def compile
  compile_statements(@statements)
end

#compile_alias(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 307

def compile_alias(node, indent)
  @aliases[node.name] = node.children

  nil
end

#compile_args(nodes) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 124

def compile_args(nodes)
  out = []

  nodes.each do |node|
    out << compile_expression(node, 0)
  end

  out.join(", ")
end

#compile_assignment(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 210

def compile_assignment(node, indent)
  out = ""

  unless @local_variables.include?(node.name)
    out << "var "
    @local_variables << node.name
  end

  out << "#{node.name} = #{compile_expression(node.children.first, 0)}"

  out
end

#compile_blank_line(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 247

def compile_blank_line(node, indent)
  ""
end

#compile_boolean(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 243

def compile_boolean(node, indent)
  node.name.to_s
end

#compile_class(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 317

def compile_class(node, indent)
  @classes << node.name

  @current_class = node.name.downcase

  out = []

  out << "type #{node.name.downcase} struct {"
  out << compile_statements(node.children[0], indent + 1)
  out << "}"
  out << ""

  out << compile_statements(node.children[1], indent)

  @current_class = nil

  pretty out, indent
end

#compile_class_instance_method_call(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 370

def compile_class_instance_method_call(node, indent)
  out = node.name
  out << "."
  out << node.children[0]

  out << "("
  out << ")"

  out
end

#compile_class_method_call(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 350

def compile_class_method_call(node, indent)
  method_name = node.children[0]

  raise "method #{method_name} is not implemented" unless method_name == "new"

  args = node.children[1]

  out = ""
  out << node.name.downcase
  out << "{"

  out << args.map do |arg|
    arg[0].to_s + ": " + compile_expression(arg[1], 0)
  end.join(", ")

  out << "}"

  out
end

#compile_comment(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 194

def compile_comment(node, indent)
  if node.name.start_with?(" type (")
    @next_func_type = {
      args: node.name.split("(")[1].split(")")[0].split(",").map(&:strip),
      return: node.name.split("->")[1].strip
    }

    return
  elsif node.name.start_with?(" type ")
    @next_instance_variable_type = node.name.split("type")[1].strip

    return
  end
  "//#{node.name}"
end

#compile_constant(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 239

def compile_constant(node, indent)
  node.name.downcase
end

#compile_constant_assignment(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 223

def compile_constant_assignment(node, indent)
  "const #{node.name.downcase} = #{compile_expression(node.children.first, 0)}"
end

#compile_divide(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 263

def compile_divide(node, indent)
  compile_node(node.children[0]) + " / " + compile_node(node.children[1])
end

#compile_equal(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 275

def compile_equal(node, indent)
  compile_node(node.children[0]) + " == " + compile_node(node.children[1])
end

#compile_expression(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 227

def compile_expression(node, indent)
  send("compile_#{node.type}", node, indent)
end

#compile_func_call(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 107

def compile_func_call(node, indent)
  mod, func = @function_to_module_map[node.name]
  mod = mod.split("/").last unless mod.nil?

  out = ""

  if mod.nil?
    out << func
  else
    out << mod.downcase + "." + func.split("_").map(&:capitalize).join
  end

  out << "(" + compile_args(node.children) + ")"

  out
end

#compile_func_def(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 134

def compile_func_def(node, indent)
  @functions[@function_access_type] << node.name
  @function_to_module_map[node.name] = [nil, node.name]

  args = compile_func_def_args(node.children[0])
  return_type = @next_func_type.nil? ? "" : @next_func_type[:return].to_s + " "
  return_type = "" if return_type == "nil "


  method_receiver =
    if @current_class.nil?
      ""
    else
      "(s *#{@current_class.downcase}) "
    end

  out = []

  if @inside_interface
    out << "#{method_receiver}#{node.name}(#{args}) #{return_type.strip}"
  else
    out << "func #{method_receiver}#{node.name}(#{args}) #{return_type}{"
    out << compile_statements(node.children[1], indent + 1)
    out << "}"
  end

  @next_func_type = nil
  @local_variables = []


  pretty out, indent
end

#compile_func_def_args(nodes) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 167

def compile_func_def_args(nodes)
  return if nodes.nil? || nodes.empty?

  raise "@next_func_type is empty" if @next_func_type.nil?

  pp nodes

  out = []
  nodes.each_with_index do |node, i|
    type = @next_func_type[:args][i]

    pointer = false
    if type[0] == "*"
      pointer = true
      type = type[1..-1]
    end

    mod = @class_to_module_map[type].to_s
    mod = mod + "." unless mod.empty?

    out << node.name + " " + (pointer ? "*" : "" ) + mod + type
    @local_variables << node.name
  end

  out.join(", ")
end

#compile_greater(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 271

def compile_greater(node, indent)
  compile_node(node.children[0]) + " > " + compile_node(node.children[1])
end

#compile_if(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 287

def compile_if(node, indent)
  out = []
  out << "if " + compile_node(node.name) + " {"
  out << "  " + compile_node(node.children)
  out << "}"

  pretty out, indent
end

#compile_if_else(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 296

def compile_if_else(node, indent)
  out = []
  out << "if " + compile_node(node.name) + " {"
  out << "  " + compile_node(node.children[0])
  out << "} else {"
  out << "  " + compile_node(node.children[1])
  out << "}"

  pretty out, indent
end

#compile_include(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 63

def compile_include(node, indent)
  # compile included module to get list of functions
  filepath = node.name.map(&:downcase).join("/")

  statements = Rgo::Parser.new.parse(File.read("std/" + filepath + ".rgo"))
  compile = Rgo::Compile.new(statements)
  compile.compile

  compile.functions[:public].each do |func|
    @function_to_module_map[func] = [filepath, func]
  end

  compile.aliases.each do |name, func|
    @function_to_module_map[name] = [filepath, func]
  end

  compile.classes.each do |name, func|
    @class_to_module_map[name] = filepath.split("/").last
  end

  "import \"#{filepath}\""
end

#compile_instance_variable_def(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 336

def compile_instance_variable_def(node, indent)
  raise "type missing for instance variable @#{node.name}" if @next_instance_variable_type.nil?

  out = node.name + " " + @next_instance_variable_type

  @next_instance_variable_type = nil

  pretty [out], indent
end

#compile_instance_variable_get(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 346

def compile_instance_variable_get(node, indent)
  "s." + node.name
end

#compile_integer(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 103

def compile_integer(node, indent)
  node.name.to_s
end

#compile_interface(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 50

def compile_interface(node, indent)
  @inside_interface = true
  out = []
  out << "type #{node.name.downcase} interface {"
  out << ""
  out << compile_statements(node.children, indent +1)
  out << "}"

  @inside_interface = false

  pretty out, indent
end

#compile_less(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 267

def compile_less(node, indent)
  compile_node(node.children[0]) + " < " + compile_node(node.children[1])
end

#compile_minus(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 259

def compile_minus(node, indent)
  compile_node(node.children[0]) + " - " + compile_node(node.children[1])
end

#compile_mod(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 279

def compile_mod(node, indent)
  compile_node(node.children[0]) + " % " + compile_node(node.children[1])
end

#compile_module(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 38

def compile_module(node, indent)
  @current_module = node.name

  out = []
  out << "package #{node.name.downcase}"
  out << ""
  out << compile_statements(node.children, indent)
  out << ""

  pretty out, indent
end

#compile_multiply(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 255

def compile_multiply(node, indent)
  compile_node(node.children[0]) + " * " + compile_node(node.children[1])
end

#compile_node(node) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 283

def compile_node(node)
  send("compile_#{node.type}", node, 0)
end

#compile_plus(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 251

def compile_plus(node, indent)
  compile_node(node.children[0]) + " + " + compile_node(node.children[1])
end

#compile_return(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 313

def compile_return(node, indent)
  "return " + compile_expression(node.children, indent)
end

#compile_statements(statements, indent = 0) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 25

def compile_statements(statements, indent = 0)
  statements = Array(statements) unless statements.is_a? Array
  statements.flatten!

  out = []

  statements.each do |statement|
    out << send("compile_#{statement.type}", statement, indent)
  end

  pretty out, indent
end

#compile_string(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 231

def compile_string(node, indent)
  "\"#{node.name}\""
end

#compile_variable(node, indent) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 235

def compile_variable(node, indent)
  node.name
end

#pretty(lines, indent = 0) ⇒ Object 



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# File 'lib/rgo/compile.rb', line 86

def pretty(lines, indent = 0)
  out = []

  lines.each do |line|
    next if line.nil?

    if line.empty?
      out << ""
    else
      out << ("  " * indent) + line
    end
  end

  out.join("\n")
end