Class: Xdrgen::Generators::Csharp

Inherits:
Base
  • Object
show all
Defined in:
lib/xdrgen/generators/csharp.rb

Instance Method Summary collapse

Methods inherited from Base

#initialize

Constructor Details

This class inherits a constructor from Xdrgen::Generators::Base

Instance Method Details

#decl_string(decl) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 522

def decl_string(decl)
  case decl
  when AST::Declarations::Opaque
    'byte[]'
  when AST::Declarations::String
    'String'
  when AST::Declarations::Array
    "#{type_string decl.type}[]"
  when AST::Declarations::Optional
    type_string(decl.type).to_s
  when AST::Declarations::Simple
    type_string(decl.type)
  else
    raise "Unknown declaration type: #{decl.class.name}"
  end
end

#decode_innervalue_member(value, member, out) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 413

def decode_innervalue_member(value, member, out)
  case member.declaration
  when AST::Declarations::Void
    return
  end
  if member.type.sub_type == :optional
    out.puts <<-EOS.strip_heredoc
          int #{member.name.camelize}Present = stream.ReadInt();
          if (#{member.name.camelize}Present != 0) {
        EOS
  end
  case member.declaration
  when AST::Declarations::Opaque
    if member.declaration.fixed?
      out.puts "int #{member.name}size = #{member.declaration.size};"
    else
      out.puts "int #{member.name}size = stream.ReadInt();"
    end
    out.puts <<-EOS.strip_heredoc
          #{value}.InnerValue = new byte[#{member.name}size];
          stream.Read(#{value}.InnerValue, 0, #{member.name}size);
        EOS
  when AST::Declarations::Array
    if member.declaration.fixed?
      out.puts "int #{member.name}size = #{member.declaration.size};"
    else
      out.puts "int #{member.name}size = stream.ReadInt();"
    end
    out.puts <<-EOS.strip_heredoc
          #{value}.InnerValue = new #{type_string member.type}[#{member.name}size];
          for (int i = 0; i < #{member.name}size; i++) {
            #{value}.InnerValue[i] = #{decode_type member.declaration.type};
          }
        EOS
  else
    out.puts "#{value}.InnerValue = #{decode_type member.declaration.type};"
  end
  out.puts '}' if member.type.sub_type == :optional
end

#decode_member(value, member, out) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 453

def decode_member(value, member, out)
  case member.declaration
  when AST::Declarations::Void
    return
  end
  if member.type.sub_type == :optional
    out.puts <<-EOS.strip_heredoc
          int #{member.name.camelize}Present = stream.ReadInt();
          if (#{member.name.camelize}Present != 0) {
        EOS
  end
  case member.declaration
  when AST::Declarations::Opaque
    if member.declaration.fixed?
      out.puts "int #{member.name}size = #{member.declaration.size};"
    else
      out.puts "int #{member.name}size = stream.ReadInt();"
    end
    out.puts <<-EOS.strip_heredoc
          #{value}.#{member.name.camelize} = new byte[#{member.name}size];
          stream.Read(#{value}.#{member.name.camelize},0,#{member.name}size);
        EOS
  when AST::Declarations::Array
    if member.declaration.fixed?
      out.puts "int #{member.name}size = #{member.declaration.size};"
    else
      out.puts "int #{member.name}size = stream.ReadInt();"
    end
    out.puts <<-EOS.strip_heredoc
          #{value}.#{member.name.camelize} = new #{type_string member.type}[#{member.name}size];
          for (int i = 0; i < #{member.name}size; i++) {
            #{value}.#{member.name.camelize}[i] = #{decode_type member.declaration.type};
          }
        EOS
  else
    out.puts "#{value}.#{member.name.camelize} = #{decode_type member.declaration.type};"
  end
  out.puts '}' if member.type.sub_type == :optional
end

#decode_type(type) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 493

def decode_type(type)
  case type
  when AST::Typespecs::Int
    'stream.ReadInt()'
  when AST::Typespecs::UnsignedInt
    'stream.ReadInt()'
  when AST::Typespecs::Hyper
    'stream.ReadLong()'
  when AST::Typespecs::UnsignedHyper
    'stream.ReadLong()'
  when AST::Typespecs::Float
    'stream.ReadFloat()'
  when AST::Typespecs::Double
    'stream.ReadDouble()'
  when AST::Typespecs::Quadruple
    raise 'cannot render quadruple in c#'
  when AST::Typespecs::Bool
    'stream.ReadInt() == 1 ? true : false'
  when AST::Typespecs::String
    'stream.ReadString()'
  when AST::Typespecs::Simple
    "#{name type.resolved_type}.Decode(stream)"
  when AST::Concerns::NestedDefinition
    "#{name type}.Decode(stream)"
  else
    raise "Unknown typespec: #{type.class.name}"
  end
end

#encode_innervalue_member(value, member, out) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 305

def encode_innervalue_member(value, member, out)
  case member.declaration
  when AST::Declarations::Void
    return
  end

  if member.type.sub_type == :optional
    out.puts "if (#{value}.InnerValue != null) {"
    out.puts 'stream.WriteInt(1);'
  end

  case member.declaration
  when AST::Declarations::Opaque
    out.puts "int #{member.name}size = #{value}.InnerValue.Length;"
    unless member.declaration.fixed?
      out.puts "stream.WriteInt(#{member.name.camelize}size);"
    end
    out.puts <<-EOS.strip_heredoc
          stream.Write(#{value}.InnerValue, 0, #{member.name}size);
        EOS
  when AST::Declarations::Array
    out.puts "int #{member.name}size = #{value}.InnerValue.Length;"
    unless member.declaration.fixed?
      out.puts "stream.WriteInt(#{member.name}size);"
    end
    out.puts <<-EOS.strip_heredoc
          for (int i = 0; i < #{member.name}size; i++) {
            #{encode_type member.declaration.type, "#{value}.InnerValue[i]"};
          }
        EOS
  else
    out.puts "#{encode_type member.declaration.type, "#{value}.InnerValue"};"
  end
  if member.type.sub_type == :optional
    out.puts '} else {'
    out.puts 'stream.WriteInt(0);'
    out.puts '}'
  end
end

#encode_member(value, member, out) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 345

def encode_member(value, member, out)
  case member.declaration
  when AST::Declarations::Void
    return
  end

  if member.type.sub_type == :optional
    out.puts "if (#{value}.#{member.name.camelize} != null) {"
    out.puts 'stream.WriteInt(1);'
  end
  case member.declaration
  when AST::Declarations::Opaque
    out.puts "int #{member.name}size = #{value}.#{member.name.camelize}.Length;"
    unless member.declaration.fixed?
      out.puts "stream.WriteInt(#{member.name.camelize}size);"
    end
    out.puts <<-EOS.strip_heredoc
          stream.Write(#{value}.#{member.name.camelize}, 0, #{member.name}size);
        EOS
  when AST::Declarations::Array
    out.puts "int #{member.name}size = #{value}.#{member.name.camelize}.Length;"
    unless member.declaration.fixed?
      out.puts "stream.WriteInt(#{member.name}size);"
    end
    out.puts <<-EOS.strip_heredoc
          for (int i = 0; i < #{member.name}size; i++) {
            #{encode_type member.declaration.type, "#{value}.#{member.name.camelize}[i]"};
          }
        EOS
  else
    out.puts "#{encode_type member.declaration.type, "#{value}.#{member.name.camelize}"};"
  end
  if member.type.sub_type == :optional
    out.puts '} else {'
    out.puts 'stream.WriteInt(0);'
    out.puts '}'
  end
end

#encode_type(type, value) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 384

def encode_type(type, value)
  case type
  when AST::Typespecs::Int
    "stream.WriteInt(#{value})"
  when AST::Typespecs::UnsignedInt
    "stream.WriteInt(#{value})"
  when AST::Typespecs::Hyper
    "stream.WriteLong(#{value})"
  when AST::Typespecs::UnsignedHyper
    "stream.WriteLong(#{value})"
  when AST::Typespecs::Float
    "stream.WriteFloat(#{value})"
  when AST::Typespecs::Double
    "stream.WriteDouble(#{value})"
  when AST::Typespecs::Quadruple
    raise 'cannot render quadruple in c#'
  when AST::Typespecs::Bool
    "stream.WriteInt(#{value} ? 1 : 0)"
  when AST::Typespecs::String
    "stream.WriteString(#{value})"
  when AST::Typespecs::Simple
    "#{name type.resolved_type}.Encode(stream, #{value})"
  when AST::Concerns::NestedDefinition
    "#{name type}.Encode(stream, #{value})"
  else
    raise "Unknown typespec: #{type.class.name}"
  end
end

#generate ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 4

def generate
  render_lib
  render_definitions(@top)
end

#name(named) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 568

def name(named)
  parent = name named.parent_defn if named.is_a?(AST::Concerns::NestedDefinition)
  result = named.name.camelize

  "#{parent}#{result}"
end

#name_string(name) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 575

def name_string(name)
  name.camelize
end

#render_definition(defn) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 16

def render_definition(defn)
  case defn
  when AST::Definitions::Struct
    render_element 'public class', defn do |out|
      render_struct defn, out
      render_nested_definitions defn, out
    end
  when AST::Definitions::Enum
    render_element 'public class', defn do |out|
      render_enum defn, out
    end
  when AST::Definitions::Union
    render_element 'public class', defn do |out|
      render_union defn, out
      render_nested_definitions defn, out
    end
  when AST::Definitions::Typedef
    render_element 'public class', defn do |out|
      render_typedef defn, out
    end
  end
end

#render_definitions(node) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 11

def render_definitions(node)
  node.namespaces.each { |n| render_definitions n }
  node.definitions.each(&method(:render_definition))
end

#render_element(type, element, post_name = '') ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 77

def render_element(type, element, post_name = '')
  path = element.name.camelize + '.cs'
  name = name_string element.name
  out  = @output.open(path)
  render_top_matter out
  render_source_comment out, element

  out.puts "#{type} #{name} #{post_name} {"
  out.indent do
    yield out
    out.unbreak
  end
  out.puts '}'
  out.puts '}'
end

#render_enum(enum, out) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 93

def render_enum(enum, out)
  enumname = enum.name + 'Enum'

  out.puts "public enum #{enumname} {"
  out.balance_after /,[\s]*/ do
    enum.members.each do |em|
      out.puts "#{em.name} = #{em.value},"
    end
  end
  out.puts "}\n"
  out.puts <<-EOS.strip_heredoc
      public #{enumname} InnerValue {get; set;} = default(#{enumname});

      public static #{enum.name} Create(#{enumname} v)
      {
        return new #{enum.name} {
          InnerValue = v
        };
      }

      public static #{name_string enum.name} Decode(XdrDataInputStream stream) {
        int value = stream.ReadInt();
        switch (value) {
      EOS
  out.indent 2 do
    enum.members.each do |em|
      out.puts "case #{em.value}: return Create(#{enumname}.#{em.name});"
    end
  end
  out.puts <<-EOS.strip_heredoc
          default:
            throw new Exception("Unknown enum value: " + value);
        }
      }

      public static void Encode(XdrDataOutputStream stream, #{name_string enum.name} value) {
        stream.WriteInt((int)value.InnerValue);
      }
      EOS
  out.break
end

#render_lib ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 9

def render_lib; end

#render_nested_definitions(defn, out) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 39

def render_nested_definitions(defn, out)
  return unless defn.respond_to? :nested_definitions
  defn.nested_definitions.each do |ndefn|
    case ndefn
    when AST::Definitions::Struct
      name = name ndefn
      out.puts "public class #{name} {"
      out.indent do
        render_struct ndefn, out
        render_nested_definitions ndefn, out
      end
      out.puts '}'
    when AST::Definitions::Enum
      name = name ndefn
      out.puts "public class #{name} {"
      out.indent do
        render_enum ndefn, out
      end
      out.puts '}'
    when AST::Definitions::Union
      name = name ndefn
      out.puts "public class #{name} {"
      out.indent do
        render_union ndefn, out
        render_nested_definitions ndefn, out
      end
      out.puts '}'
    when AST::Definitions::Typedef
      name = name ndefn
      out.puts "public class #{name} {"
      out.indent do
        render_typedef ndefn, out
      end
      out.puts '}'
    end
  end
end

#render_source_comment(out, defn) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 289

def render_source_comment(out, defn)
  return if defn.is_a?(AST::Definitions::Namespace)

  out.puts <<-EOS.strip_heredoc
      // === xdr source ============================================================

      EOS

  out.puts '//  ' + defn.text_value.split("\n").join("\n//  ")

  out.puts <<-EOS.strip_heredoc

      //  ===========================================================================
      EOS
end

#render_struct(struct, out) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 135

def render_struct(struct, out)
  out.puts "public #{name struct} () {}"
  struct.members.each do |m|
    out.puts <<-EOS.strip_heredoc
          public #{decl_string(m.declaration)} #{m.name.camelize} {get; set;}
        EOS
  end
  out.puts "\n"
  out.puts "public static void Encode(XdrDataOutputStream stream, #{name struct} encoded#{name struct}) {"
  struct.members.each do |m|
    out.indent do
      encode_member "encoded#{name struct}", m, out
    end
  end
  out.puts '}'

  out.puts <<-EOS.strip_heredoc
        public static #{name struct} Decode(XdrDataInputStream stream) {
          #{name struct} decoded#{name struct} = new #{name struct}();
      EOS
  struct.members.each do |m|
    out.indent do
      decode_member "decoded#{name struct}", m, out
    end
  end
  out.indent do
    out.puts "return decoded#{name struct};"
  end
  out.puts '}'

  out.break
end

#render_top_matter(out) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 278

def render_top_matter(out)
  out.puts <<-EOS.strip_heredoc
        // Automatically generated by xdrgen
        // DO NOT EDIT or your changes may be overwritten
        using System;

        namespace #{@namespace} {
      EOS
  out.break
end

#render_typedef(typedef, out) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 168

def render_typedef(typedef, out)
  out.puts <<-EOS.strip_heredoc
        public #{decl_string typedef.declaration} InnerValue {get; set;} = default(#{decl_string typedef.declaration});

        public #{typedef.name.camelize}() {}

        public #{typedef.name.camelize}(#{decl_string typedef.declaration} value)
        {
          InnerValue = value;
        }

      EOS
  out.puts "public static void Encode(XdrDataOutputStream stream, #{name typedef}  encoded#{name typedef}) {"
  encode_innervalue_member "encoded#{name typedef}", typedef, out
  out.puts '}'

  out.puts <<-EOS.strip_heredoc
        public static #{name typedef} Decode(XdrDataInputStream stream) {
          #{name typedef} decoded#{name typedef} = new #{name typedef}();
      EOS
  decode_innervalue_member "decoded#{name typedef}", typedef, out
  out.indent do
    out.puts "return decoded#{name typedef};"
  end
  out.puts '}'
end

#render_union(union, out) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 195

def render_union(union, out)
  has_inner_value = false

  out.puts "public #{name union} () {}"
  out.puts <<-EOS.strip_heredoc

        public #{type_string union.discriminant.type} Discriminant { get; set; } = new #{type_string union.discriminant.type}();

      EOS
  union.arms.each do |arm|
    next if arm.void?
    out.puts <<-EOS.strip_heredoc
          public #{decl_string(arm.declaration)} #{arm.name.camelize} {get; set;}
        EOS
  end

  out.puts "public static void Encode(XdrDataOutputStream stream, #{name union} encoded#{name union}) {"
  if union.discriminant.type.is_a?(AST::Typespecs::Int)
    out.puts "stream.WriteInt((int)encoded#{name union}.Discriminant);"
    out.puts "switch (encoded#{name union}.Discriminant) {"
  # elsif [discriminant is AST::Definitions::Typedef]
  #   out.puts "stream.writeInt(encoded#{name union}.getDiscriminant().get#{name union.discriminant.type}());"
  else
    has_inner_value = true
    out.puts "stream.WriteInt((int)encoded#{name union}.Discriminant.InnerValue);"
    out.puts "switch (encoded#{name union}.Discriminant.InnerValue) {"
  end

  union.arms.each do |arm|
    case arm
    when AST::Definitions::UnionDefaultArm
      out.puts 'default:'
    else
      arm.cases.each do |kase|
        if kase.value.is_a?(AST::Identifier)
          out.puts "case #{type_string union.discriminant.type}.#{type_string union.discriminant.type}Enum.#{kase.value.name}:"
        else
          out.puts "case #{kase.value.value}:"
        end
      end
    end
    encode_member "encoded#{name union}", arm, out
    out.puts 'break;'
  end
  out.puts "}\n}"

  out.puts "public static #{name union} Decode(XdrDataInputStream stream) {"
  out.puts "#{name union} decoded#{name union} = new #{name union}();"
  if union.discriminant.type.is_a?(AST::Typespecs::Int)
    out.puts 'int discriminant =  stream.ReadInt();'
    out.puts "decoded#{name union}.Discriminant = discriminant;"
    out.puts "switch (decoded#{name union}.Discriminant) {"
  else
    out.puts "#{name union.discriminant.type} discriminant = #{name union.discriminant.type}.Decode(stream);"
    out.puts "decoded#{name union}.Discriminant = discriminant;"
    out.puts "switch (decoded#{name union}.Discriminant.InnerValue) {"
  end

  union.arms.each do |arm|
    case arm
    when AST::Definitions::UnionDefaultArm
      out.puts 'default:'
    else
      arm.cases.each do |kase|
        if kase.value.is_a?(AST::Identifier)
          out.puts "case #{type_string union.discriminant.type}.#{type_string union.discriminant.type}Enum.#{kase.value.name}:"
        else
          out.puts "case #{kase.value.value}:"
        end
      end
    end
    decode_member "decoded#{name union}", arm, out
    out.puts 'break;'
  end
  out.puts "}\n"
  out.indent do
    out.puts "return decoded#{name union};"
  end
  out.puts '}'

  out.break
end

#type_string(type) ⇒ Object 



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# File 'lib/xdrgen/generators/csharp.rb', line 539

def type_string(type)
  case type
  when AST::Typespecs::Int
    'int'
  when AST::Typespecs::UnsignedInt
    'int'
  when AST::Typespecs::Hyper
    'long'
  when AST::Typespecs::UnsignedHyper
    'long'
  when AST::Typespecs::Float
    'float'
  when AST::Typespecs::Double
    'double'
  when AST::Typespecs::Quadruple
    'Tuple'
  when AST::Typespecs::Bool
    'bool'
  when AST::Typespecs::Opaque
    "Byte[#{type.size}]"
  when AST::Typespecs::Simple
    name type.resolved_type
  when AST::Concerns::NestedDefinition
    name type
  else
    raise "Unknown typespec: #{type.class.name}"
  end
end