Module: FastRuby::BlockTranslator

Defined in:
lib/fastruby/translator/modules/block.rb,
lib/fastruby/translator/modules/method_group.rb

Instance Method Summary collapse

Instance Method Details

#to_c_block(tree, result_variable = nil) ⇒ Object 



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# File 'lib/fastruby/translator/modules/block.rb', line 97

def to_c_block(tree, result_variable = nil)
  if tree.size == 1
    return inline_block("return Qnil;")
  end
  
  str = ""
  str = tree[1..-2].map{ |subtree|
    to_c(subtree,"last_expression")
  }.join(";")

  if tree[-1]
      str = str + ";#{to_c(tree[-1],"last_expression")};"
  end

  if result_variable
    str << "#{result_variable} = last_expression;"
    str
  else
    str << "return last_expression;"
    inline_block str
  end
end

#to_c_class(tree, result_var = nil) ⇒ Object 



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# File 'lib/fastruby/translator/modules/method_group.rb', line 25

def to_c_class(tree, result_var = nil)
  str_class_name = get_class_name(tree[1])
  container_tree = get_container_tree(tree[1])

  if container_tree == s(:self)
    method_group("
                VALUE superklass = rb_cObject;
                #{
                if tree[2] 
                  to_c tree[2], "superklass"
                end
                };
                VALUE tmpklass = rb_define_class(
                  #{str_class_name.inspect},
                  superklass
              );
    ", tree[3], result_var)
  else
    method_group("
                VALUE container_klass = Qnil;
                VALUE superklass = rb_cObject;
                
                #{
                if tree[2] 
                  to_c tree[2], "superklass"
                end
                };
                
                #{to_c(container_tree, "container_klass")};
                VALUE tmpklass = rb_define_class_under(
                  container_klass,
                  #{str_class_name.inspect},
                  superklass
              );
    ", tree[3], result_var)
  end
end

#to_c_module(tree, result_var = nil) ⇒ Object 



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# File 'lib/fastruby/translator/modules/method_group.rb', line 63

def to_c_module(tree, result_var = nil)
  str_class_name = get_class_name(tree[1])
  container_tree = get_container_tree(tree[1])

  if container_tree == s(:self)
    method_group("
                  VALUE tmpklass = rb_define_module(#{str_class_name.inspect});
    ", tree[2], result_var)
  else
    method_group("
                  VALUE container_klass = Qnil;
                  
                  #{to_c(container_tree, "container_klass")};
                  VALUE tmpklass = rb_define_module_under(container_klass,#{str_class_name.inspect});
    ", tree[2], result_var)
  end
end

#to_c_yield(tree) ⇒ Object 



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# File 'lib/fastruby/translator/modules/block.rb', line 26

def to_c_yield(tree)

  block_code = proc { |name| "
    static VALUE #{name}(VALUE frame_param, VALUE* block_args, int size) {

      #{@locals_struct} *plocals;
      #{@frame_struct} *pframe;
      pframe = (void*)frame_param;
      plocals = (void*)pframe->plocals;

      if ((plocals->block_function_address) == 0) {
        #{_raise("rb_eLocalJumpError", "no block given")};
      } else {
        return ((VALUE(*)(int,VALUE*,VALUE,VALUE))(plocals->block_function_address))(size, block_args, (VALUE)(plocals->block_function_param), (VALUE)pframe);
      }
    }
  "
  }

  splat_arg = tree.find{|x| x == :yield ? false : x[0] == :splat}
  ret = nil      
  if splat_arg
    ret = "
      VALUE splat_array = Qnil;
      VALUE block_aux = Qnil;
       #{to_c(splat_arg[1], "splat_array")};
      
      if (CLASS_OF(splat_array) == rb_cArray) {
        VALUE block_args[_RARRAY_LEN(splat_array) + #{tree.size}];
        int i;
        #{ 
          (0..tree.size-3).map{|i|
            "
            #{to_c(tree[i+1], "block_aux")};
            block_args[#{i}] = block_aux;
            "
          }.join(";\n")
        };
        
        for (i=0; i<_RARRAY_LEN(splat_array); i++) {
          block_args[i+#{tree.size-2}] = rb_ary_entry(splat_array,i);
        }
        
        last_expression = #{anonymous_function(&block_code)}((VALUE)pframe, block_args, _RARRAY_LEN(splat_array) + #{tree.size-2});
      } else {
        VALUE block_args[1+#{tree.size}];
        #{ 
          (0..tree.size-3).map{|i|
            "
            #{to_c(tree[i+1], "block_aux")};
            block_args[#{i}] = block_aux;
            "
          }.join(";\n")
        };
        
        block_args[#{tree.size-2}] = splat_array;
        last_expression = #{anonymous_function(&block_code)}((VALUE)pframe, block_args, #{tree.size-1});
      }
      
    "
  else
    ret = if tree.size > 1
        "last_expression = " + anonymous_function(&block_code)+"((VALUE)pframe, (VALUE[]){#{tree[1..-1].map{|subtree| to_c subtree}.join(",")}},#{tree.size-1})"
      else
        "last_expression = " + anonymous_function(&block_code)+"((VALUE)pframe, (VALUE[]){}, #{tree.size-1})"
      end
  end
  
  protected_block(ret, false)
end