Class: FastRuby::Context

Inherits:
Object show all
Defined in:
lib/fastruby/translator/translator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(common_func = true) ⇒ Context

Returns a new instance of Context.



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# File 'lib/fastruby/translator/translator.rb', line 47

def initialize(common_func = true)
  @infer_lvar_map = Hash.new
  @no_cache = false
  @extra_code = ""
  @options = {}
  @init_extra = Array.new
  @frame_struct = "struct {
    void* parent_frame;
    void* plocals;
    jmp_buf jmp;
    VALUE return_value;
    int rescue;
    VALUE last_error;
    VALUE next_recv;
    int targetted;
    struct FASTRUBYTHREADDATA* thread_data;
  }"

  @block_struct = "struct {
    void* block_function_address;
    void* block_function_param;
    VALUE proc;
  }"

    extra_code << "
      static void frb_jump_tag(int state) {
        VALUE exception = rb_funcall(#{literal_value FastRuby::JumpTagException}, #{intern_num :new},1,INT2FIX(state)); 
        rb_exc_raise(exception);
      }
    "

  extra_code << "
    #define FASTRUBY_TAG_RETURN 0x80
    #define FASTRUBY_TAG_NEXT 0x81
    #define FASTRUBY_TAG_BREAK 0x82
    #define FASTRUBY_TAG_RAISE 0x83
    #define FASTRUBY_TAG_REDO 0x84
    #define FASTRUBY_TAG_RETRY 0x85
    #define TAG_RAISE 0x6

# define PTR2NUM(x)   (ULONG2NUM((unsigned long)(x)))
# define NUM2PTR(x)   ((void*)(NUM2ULONG(x)))

    #ifndef __INLINE_FASTRUBY_BASE
    #include \"#{FastRuby.fastruby_load_path}/../ext/fastruby_base/fastruby_base.inl\"
    #define __INLINE_FASTRUBY_BASE
    #endif
  "

  ruby_code = "
    $LOAD_PATH << #{FastRuby.fastruby_load_path.inspect}
    require #{FastRuby.fastruby_script_path.inspect}
  "

  init_extra << "
    rb_eval_string(#{ruby_code.inspect});
	"
	
	
  if RUBY_VERSION =~ /^1\.8/

  @lambda_node_gvar = add_global_name("NODE*", 0);
  @proc_node_gvar = add_global_name("NODE*", 0);
  @procnew_node_gvar = add_global_name("NODE*", 0);
  @callcc_node_gvar = add_global_name("NODE*", 0);
  
  init_extra << "
    #{@lambda_node_gvar} = rb_method_node(rb_cObject, #{intern_num :lambda});
    #{@proc_node_gvar} = rb_method_node(rb_cObject, #{intern_num :proc});
    #{@procnew_node_gvar} = rb_method_node(CLASS_OF(rb_cProc), #{intern_num :new});
    #{@callcc_node_gvar} = rb_method_node(rb_mKernel, #{intern_num :callcc});
  "
 elsif RUBY_VERSION =~ /^1\.9/

  @lambda_node_gvar = add_global_name("void*", 0);
  @proc_node_gvar = add_global_name("void*", 0);
  @procnew_node_gvar = add_global_name("void*", 0);
  @callcc_node_gvar = add_global_name("void*", 0);
  
  init_extra << "
    #{@lambda_node_gvar} = rb_method_entry(rb_cObject, #{intern_num :lambda});
    #{@proc_node_gvar} = rb_method_entry(rb_cObject, #{intern_num :proc});
    #{@procnew_node_gvar} = rb_method_entry(CLASS_OF(rb_const_get(rb_cObject, #{intern_num :Proc})), #{intern_num :new});
    #{@callcc_node_gvar} = rb_method_entry(rb_mKernel, #{intern_num :callcc});
  "
end

  @common_func = common_func
  if common_func
    extra_code << "static VALUE _rb_gvar_set(void* ge,VALUE value) {
      rb_gvar_set((struct global_entry*)ge,value);
      return value;
    }
    "

    extra_code << "static VALUE re_yield(int argc, VALUE* argv, VALUE param, VALUE _parent_frame) {
     VALUE yield_args = rb_ary_new4(argc,argv);
     VALUE* yield_args_p = &yield_args;

     #{@frame_struct}* pframe;
     pframe = (typeof(pframe))_parent_frame;

     return #{protected_block("last_expression = rb_yield_splat(*(VALUE*)yield_args_p)",true,"yield_args_p",true)};
    }"

    extra_code << "static VALUE _rb_ivar_set(VALUE recv,ID idvar, VALUE value) {
      rb_ivar_set(recv,idvar,value);
      return value;
    }
    "

    extra_code << "static VALUE __rb_cvar_set(VALUE recv,ID idvar, VALUE value, int warn) {
      #{if RUBY_VERSION =~ /^1\.9/
        "rb_cvar_set(recv,idvar,value);"
        elsif RUBY_VERSION =~ /^1\.8/
        "rb_cvar_set(recv,idvar,value,warn);"
        else
          raise RuntimeError, "unsupported ruby version #{RUBY_VERSION}"
        end 
      }
     
      return value;
    }
    "

    extra_code << "static VALUE _lvar_assing(VALUE* destination,VALUE value) {
      *destination = value;
      return value;
    }

/*
   #{caller.join("\n")}
*/

    "
    
  end
end

Instance Attribute Details

#alt_method_name ⇒ Object

Returns the value of attribute alt_method_name.



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# File 'lib/fastruby/translator/translator.rb', line 33

def alt_method_name
  @alt_method_name
end

#extra_code ⇒ Object (readonly)

Returns the value of attribute extra_code.



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# File 'lib/fastruby/translator/translator.rb', line 40

def extra_code
  @extra_code
end

#infer_lvar_map ⇒ Object

Returns the value of attribute infer_lvar_map.



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# File 'lib/fastruby/translator/translator.rb', line 32

def infer_lvar_map
  @infer_lvar_map
end

#infer_self ⇒ Object

Returns the value of attribute infer_self.



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# File 'lib/fastruby/translator/translator.rb', line 36

def infer_self
  @infer_self
end

#init_extra ⇒ Object (readonly)

Returns the value of attribute init_extra.



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# File 'lib/fastruby/translator/translator.rb', line 39

def init_extra
  @init_extra
end

#locals ⇒ Object

Returns the value of attribute locals.



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# File 'lib/fastruby/translator/translator.rb', line 34

def locals
  @locals
end

#no_cache ⇒ Object (readonly)

Returns the value of attribute no_cache.



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# File 'lib/fastruby/translator/translator.rb', line 38

def no_cache
  @no_cache
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/fastruby/translator/translator.rb', line 35

def options
  @options
end

#snippet_hash ⇒ Object

Returns the value of attribute snippet_hash.



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# File 'lib/fastruby/translator/translator.rb', line 37

def snippet_hash
  @snippet_hash
end

Instance Method Details

#add_global_name(ctype, default) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 1364

def add_global_name(ctype, default)
  name = "glb" + rand(1000000000).to_s

  extra_code << "
    static #{ctype} #{name} = #{default};
  "
  name
end

#add_main ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 278

def add_main
  if options[:main]

    extra_code << "
      static VALUE #{@alt_method_name}(VALUE self__);
      static VALUE main_proc_call(VALUE self__, VALUE class_self_) {
        #{@alt_method_name}(class_self_);
        return Qnil;
      }

    "

    init_extra << "
        {
        VALUE newproc = rb_funcall(rb_cObject,#{intern_num :new},0);
        rb_define_singleton_method(newproc, \"call\", main_proc_call, 1);
        rb_gv_set(\"$last_obj_proc\", newproc);

        }
      "
  end
end

#anonymous_function(*x) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 202

def anonymous_function(*x)

  name = "anonymous" + rand(10000000).to_s
  extra_code << yield(name,*x)

  name
end

#c_escape(str) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 959

def c_escape(str)
  str.inspect
end

#define_method_at_init(klass, method_name, size, signature) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 301

def define_method_at_init(klass,method_name, size, signature)
  init_extra << "
    {
      VALUE method_name = rb_funcall(
            #{literal_value FastRuby},
            #{intern_num :make_str_signature},
            2,
            #{literal_value method_name},
            #{literal_value signature}
            );

      ID id = rb_intern(RSTRING_PTR(method_name));
      
      rb_funcall(
            #{literal_value FastRuby},
            #{intern_num :set_builder_module},
            1,
            #{literal_value klass}
            );
      
      VALUE rb_method_hash;
      void** address = 0;
      rb_method_hash = rb_funcall(#{literal_value klass}, #{intern_num :method_hash},1,#{literal_value method_name});

      if (rb_method_hash != Qnil) {
        VALUE tmp = rb_hash_aref(rb_method_hash, PTR2NUM(id));
        if (tmp != Qnil) {
            address = (void*)NUM2PTR(tmp);
        }
      }
      
      if (address == 0) {
        address = malloc(sizeof(void*));
      }
      *address = #{alt_method_name};
      
      rb_funcall(
          #{literal_value klass},
          #{intern_num :register_method_value}, 
          3,
          #{literal_value method_name},
          PTR2NUM(id),
          PTR2NUM(address)
          );
    }
  "
end

#directive(tree) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 722

def directive(tree)
  recv = tree[1]
  mname = tree[2]
  args = tree[3]

  if mname == :infer
    return to_c(recv)
  elsif mname == :lvar_type
    lvar_name = args[1][1] || args[1][2]
    lvar_type = eval(args[2][1].to_s)

    @infer_lvar_map[lvar_name] = lvar_type
    return "Qnil"
  elsif mname == :block_given?
    return "plocals->block_function_address == 0 ? Qfalse : Qtrue"
  elsif mname == :inline_c

    code = args[1][1]

    unless (args[2] == s(:false))
      return anonymous_function{ |name| "
         static VALUE #{name}(VALUE param) {
          #{@frame_struct} *pframe = (void*)param;
          #{@locals_struct} *plocals = (void*)pframe->plocals;
          #{code};

          return Qnil;
        }
       "
      }+"((VALUE)pframe)"
    else
      code
    end

  else
    nil
  end
end

#encode_address(recvtype, signature, mname, call_tree, inference_complete, convention_global_name = nil) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 1038

def encode_address(recvtype,signature,mname,call_tree,inference_complete,convention_global_name = nil)
  name = self.add_global_name("void*", 0);
  address_name = self.add_global_name("void**", 0);
  @last_address_name = address_name
  cfunc_address_name = self.add_global_name("void**", 0);
  cfunc_real_address_name  = self.add_global_name("void*", 0);
  tree_pointer_name = self.add_global_name("VALUE*", 0);
  args_tree = call_tree[3].reject{|st| st.respond_to?(:node_type) ? st[0] == :block_pass : false}
  method_tree = nil

  begin
    method_tree = recvtype.instance_method(@method_name.to_sym).fastruby.tree
  rescue NoMethodError
  end

  strargs_signature = (0..args_tree.size-2).map{|x| "VALUE arg#{x}"}.join(",")
  strargs = (0..args_tree.size-2).map{|x| "arg#{x}"}.join(",")
  inprocstrargs = (1..args_tree.size-1).map{|x| "((VALUE*)method_arguments)[#{x}]"}.join(",")

  if args_tree.size > 1
    strargs_signature = "," + strargs_signature
    toprocstrargs = "self,"+strargs
    strargs = "," + strargs
    inprocstrargs = ","+inprocstrargs
  else
    toprocstrargs = "self"
  end

  value_cast = ( ["VALUE"]*(args_tree.size) ).join(",") + ",VALUE,VALUE"

  recvdump = nil

  begin
     recvdump = literal_value recvtype
  rescue
  end
  
  pureruby_wrapper = anonymous_function{ |funcname| "
    static VALUE #{funcname}(VALUE self,void* block,void* frame#{strargs_signature}){
      #{@frame_struct}* pframe = frame;
      VALUE method_arguments[#{args_tree.size}] = {#{toprocstrargs}};
  
      return #{
        protected_block "last_expression = rb_funcall(((VALUE*)method_arguments)[0], #{intern_num mname.to_sym}, #{args_tree.size-1}#{inprocstrargs});", false, "method_arguments"
        };
    }
  "
  }
  
  generic_wrapper = anonymous_function{ |funcname| "
    static VALUE #{funcname}(VALUE self,void* block,void* frame#{strargs_signature}){
    
      #{@frame_struct}* pframe = frame;
      VALUE method_arguments[#{args_tree.size+1}] = {#{toprocstrargs},(VALUE)block};
      
      void* fptr = 0;
      
      if (*#{address_name} == 0) {
        if (#{tree_pointer_name} != 0) {
          if (*#{tree_pointer_name} != Qnil) {
            VALUE signature = #{literal_value signature};
            VALUE recvtype = #{recvdump};
            VALUE mname = #{literal_value mname};
            
            rb_funcall(recvtype, #{intern_num :build}, 2, signature, mname);
          }
        }
      }
      
      fptr = *#{address_name};
      
      #{
        if args_tree.size < 25
        "
        if (fptr == 0) {
          fptr = *#{cfunc_address_name};
          if (fptr != 0) {
            VALUE params[2] = {self,PTR2NUM(#{args_tree.size-1})};
            return ( (VALUE(*)(#{value_cast})) (fptr) )((VALUE)params,(VALUE)block,(VALUE)frame#{inprocstrargs});  
          }
        }
        "
        end
      } 
      
      if (fptr == 0) {
        if (block==0) {
          return #{
            protected_block "last_expression = rb_funcall(((VALUE*)method_arguments)[0], #{intern_num mname.to_sym}, #{args_tree.size-1}#{inprocstrargs});", false, "method_arguments"
            };

        } else {
          return #{
              protected_block "
                    #{@block_struct} *pblock;
                    pblock = (typeof(pblock))( ((VALUE*)method_arguments)[#{args_tree.size}] );
                    last_expression = rb_iterate(
                    #{anonymous_function{|name|
                      "
                        static VALUE #{name} (VALUE data) {
                          VALUE* method_arguments = (VALUE*)data;
                          return rb_funcall(
                            ((VALUE*)method_arguments)[0], 
                            #{intern_num mname.to_sym}, 
                            #{args_tree.size-1}#{inprocstrargs});
                        }
                      "
                    }},
                      (VALUE)method_arguments,
                      
                    #{anonymous_function{|name|
                      "
                        static VALUE #{name} (VALUE arg_, VALUE param, int argc, VALUE* argv) {

       VALUE arg;
        #{
        # TODO: access directly to argc and argv for optimal execution
        if RUBY_VERSION =~ /^1\.9/ 
          "
            if (TYPE(arg_) == T_ARRAY) {
              if (_RARRAY_LEN(arg_) <= 1) {
                arg = rb_ary_new4(argc,argv);
              } else {
                arg = arg_;
              }
            } else {
              arg = rb_ary_new4(argc,argv);
            }
          "
        else
          "arg = arg_;"
        end
        }
    
                          return rb_proc_call(param, arg);
                        }
                      "
                    }},
                      pblock->proc
                    );
            ", false, "method_arguments"
            };
        }

      } else {
        return ( (VALUE(*)(VALUE,VALUE,VALUE,int,VALUE*)) (fptr) )(self,(VALUE)block,(VALUE)frame,#{args_tree.size-1},method_arguments+1);  
      }
    }
    "
  }


  cfunc_value_cast = (["VALUE"]*args_tree.size).join(",")
  cfunc_wrapper = anonymous_function{ |funcname| "
    static VALUE #{funcname}(VALUE* params, void* block,void* frame#{strargs_signature}){
        VALUE self = params[0];
        VALUE method_arguments[#{args_tree.size}] = {#{toprocstrargs}};
        return ( (VALUE(*)(#{cfunc_value_cast})) (#{cfunc_real_address_name}) )(self#{inprocstrargs});
    }
    "
  }
  
  toprocstrargs = (0..25).map{|x| "arg#{x}"}.join(",")
  strargs_signature = (0..25).map{|x| "VALUE arg#{x}"}.join(",")

  cfunc_wrapper_1 = anonymous_function{ |funcname| "
    static VALUE #{funcname}(VALUE* params, void* block,void* frame, #{strargs_signature}){
        VALUE self = params[0];
        VALUE method_arguments[26] = {#{toprocstrargs}};
        return ( (VALUE(*)(int, VALUE*, VALUE)) (#{cfunc_real_address_name}) )(NUM2ULONG(params[1]),method_arguments,self);
    }
    "
  }

  cfunc_wrapper_2 = anonymous_function{ |funcname| "
    static VALUE #{funcname}(VALUE* params, void* block,void* frame, #{strargs_signature}){
        VALUE self = params[0];
        VALUE args = rb_ary_new3(NUM2ULONG(params[1]),#{toprocstrargs});
        return ( (VALUE(*)(VALUE,VALUE)) (#{cfunc_real_address_name}) )(self,args);
    }
    "
  }

  if recvdump and recvtype
    init_extra << "
      {
        VALUE recvtype = #{recvdump};
        rb_funcall(#{literal_value FastRuby}, #{intern_num :set_builder_module}, 1, recvtype);
        VALUE signature = #{literal_value signature};
        VALUE mname = #{literal_value mname};
        VALUE tree = #{literal_value method_tree};
        VALUE rb_str_signature = rb_funcall(
                                  #{literal_value FastRuby},
                                  #{intern_num :make_str_signature},
                                  2,
                                  mname,
                                  signature);



        VALUE fastruby_method = rb_funcall(recvtype, #{intern_num :fastruby_method}, 1, mname);
        #{tree_pointer_name} = (VALUE*)NUM2PTR(fastruby_method_tree_pointer(fastruby_method));
        
        ID id;
        ID default_id = rb_intern(\"default\");
        VALUE rb_method_hash;
        void** address = 0;
        void** default_address = 0;
        id = rb_intern(RSTRING_PTR(rb_str_signature));
        rb_method_hash = rb_funcall(recvtype, #{intern_num :method_hash},1,mname);

        if (rb_method_hash != Qnil) {
          VALUE tmp = rb_hash_aref(rb_method_hash, PTR2NUM(id));
          if (tmp != Qnil) {
              address = (void*)NUM2PTR(tmp);
          }
          
          tmp = rb_hash_aref(rb_method_hash, PTR2NUM(default_id));
          if (tmp != Qnil) {
             default_address = (void*)NUM2PTR(tmp);
          }
        }
        
        if (default_address==0) {
          default_address = malloc(sizeof(void*));
          *default_address = 0;

#ifdef RUBY_1_8

			// this only works with ruby1.8

          NODE* body = rb_method_node(recvtype,#{intern_num mname});
          if (body != 0) {
            if (nd_type(body) == NODE_CFUNC) {
              if (body->nd_argc == #{args_tree.size-1}) {
                *default_address = #{cfunc_wrapper};
                #{cfunc_real_address_name} = (void*)body->nd_cfnc;
              } else if (body->nd_argc == -1) {
                *default_address = #{cfunc_wrapper_1};
                #{cfunc_real_address_name} = (void*)body->nd_cfnc;
              } else if (body->nd_argc == -2) {
                *default_address = #{cfunc_wrapper_2};
                #{cfunc_real_address_name} = (void*)body->nd_cfnc;
              }
            }
          }
#endif
#ifdef RUBY_1_9
          rb_method_entry_t* me = rb_method_entry(recvtype,#{intern_num mname});
          if (me != 0) {
            rb_method_definition_t* def = me->def;
            
            if (def->type == VM_METHOD_TYPE_CFUNC) {
              if (def->body.cfunc.argc == #{args_tree.size-1}) {
                *default_address = #{cfunc_wrapper};
                #{cfunc_real_address_name} = (void*)def->body.cfunc.func;
              } else if (def->body.cfunc.argc == -1) {
                *default_address = #{cfunc_wrapper_1};
                #{cfunc_real_address_name} = (void*)def->body.cfunc.func;
              } else if (def->body.cfunc.argc == -2) {
                *default_address = #{cfunc_wrapper_2};
                #{cfunc_real_address_name} = (void*)def->body.cfunc.func;
              }
            }
          }
#endif

          if (recvtype != Qnil) { 
            rb_funcall(
                recvtype,
                #{intern_num :register_method_value}, 
                3,
                #{literal_value mname},
                PTR2NUM(default_id),
                PTR2NUM(default_address)
                );
          }
        }

        if (address==0) {
          address = malloc(sizeof(void*));
          
          if (recvtype != Qnil) { 
            rb_funcall(
                recvtype,
                #{intern_num :register_method_value}, 
                3,
                #{literal_value mname},
                PTR2NUM(id),
                PTR2NUM(address)
                );
          }
  
          *address = 0; //(void*)
        }
        
        #{address_name} = address;
        #{cfunc_address_name} = default_address;
        #{name} = (void*)#{generic_wrapper};
      }
    "
  else
    init_extra << "
    // ruby, wrap rb_funcall
    #{name} = (void*)#{pureruby_wrapper};
    "
  end

  name
end

#frame(code, jmp_code, not_jmp_code = "", rescued = nil) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 1384

def frame(code, jmp_code, not_jmp_code = "", rescued = nil)

  anonymous_function{ |name| "
    static VALUE #{name}(VALUE param) {
      volatile VALUE last_expression = Qnil;
      #{@frame_struct} frame;

      typeof(frame)* volatile pframe;
      typeof(frame)* volatile parent_frame;
      #{@locals_struct}* volatile plocals;

      parent_frame = (void*)param;

      frame.parent_frame = (void*)param;
      frame.plocals = parent_frame->plocals;
      frame.rescue = #{rescued ? rescued : "parent_frame->rescue"};
      frame.targetted = 0;
      frame.thread_data = parent_frame->thread_data;
      if (frame.thread_data == 0) frame.thread_data = rb_current_thread_data();

      plocals = frame.plocals;
      pframe = &frame;

      int aux = setjmp(frame.jmp);
      if (aux != 0) {
        last_expression = pframe->return_value;

        // restore previous frame
        typeof(pframe) original_frame = pframe;
        pframe = parent_frame;

        #{jmp_code};

        if (original_frame->targetted == 0) {
          longjmp(pframe->jmp,aux);
        }

        return last_expression;
      }

      #{code};

      // restore previous frame
      volatile typeof(pframe) original_frame = pframe;
      pframe = parent_frame;
      #{not_jmp_code};

      return last_expression;

      }
    "
  } + "((VALUE)pframe)"
end

#frame_call(inner_code, precode = "", postcode = "") ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 210

def frame_call(inner_code, precode = "", postcode = "")
  inline_block "

    volatile VALUE ret = Qnil;
    // create a call_frame
    #{@frame_struct} call_frame;
    typeof(call_frame)* volatile old_pframe = (void*)pframe;

    pframe = (typeof(pframe))&call_frame;

    call_frame.parent_frame = (void*)pframe;
    call_frame.plocals = plocals;
    call_frame.return_value = Qnil;
    call_frame.targetted = 0;
    call_frame.thread_data = old_pframe->thread_data;
    if (call_frame.thread_data == 0) call_frame.thread_data = rb_current_thread_data();

    void* volatile old_call_frame = plocals->call_frame;
    plocals->call_frame = &call_frame;

    #{precode}

            int aux = setjmp(call_frame.jmp);
            if (aux != 0) {
              if (call_frame.targetted == 0) {
                #{postcode}
                longjmp(old_pframe->jmp,aux);
              }

              if (aux == FASTRUBY_TAG_BREAK) {
                plocals->call_frame = old_call_frame;
                #{postcode}
                return call_frame.return_value;
              } else if (aux == FASTRUBY_TAG_RETRY ) {
                // do nothing and let the call execute again
              } else {
                plocals->call_frame = old_call_frame;
                #{postcode}
                return call_frame.return_value;
              }
            }
            

    #{inner_code};
    
    #{postcode}
    
    plocals->call_frame = old_call_frame;
    return ret;
  "
end

#global_entry(glbname) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 1373

def global_entry(glbname)
  name = add_global_name("struct global_entry*", 0);

  init_extra << "
    #{name} = rb_global_entry(SYM2ID(#{literal_value glbname}));
  "

  name
end

#infer_type(recv) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 698

def infer_type(recv)
  if recv[0] == :call
    if recv[2] == :infer
      eval(recv[3].last.last.to_s)
    end
  elsif recv[0] == :lvar
    @infer_lvar_map[recv[1]]
  elsif recv[0] == :self
    @infer_self
  elsif recv[0] == :str or recv[0] == :lit
    recv[1].class
  else
    nil
  end
end

#initialize_method_structs(args_tree) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 262

def initialize_method_structs(args_tree)
  @locals_struct = "struct {
    int size;        
    void* call_frame;
    void* parent_locals;
    void* pframe;
    void* block_function_address;
    void* block_function_param;
    VALUE active;
    VALUE targetted;
    VALUE return_value;
    #{@locals.map{|l| "VALUE #{l};\n"}.join}
    }"

end

#inline_block(code, repass_var = nil, nolocals = false) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 784

def inline_block(code, repass_var = nil, nolocals = false)
  anonymous_function{ |name| "
    static VALUE #{name}(VALUE param#{repass_var ? ",void* " + repass_var : "" }) {
      #{@frame_struct} * volatile pframe = (void*)param;

      #{nolocals ? "" : "#{@locals_struct} * volatile plocals = (void*)pframe->plocals;"}
      volatile VALUE last_expression = Qnil;

      #{code}
      return Qnil;

      #{unless nolocals
      "
local_return:
    plocals->return_value = last_expression;
    plocals->targetted = 1;
    longjmp(pframe->jmp, FASTRUBY_TAG_RETURN);
    return last_expression;
    "
    end
      }
fastruby_local_redo:
      longjmp(pframe->jmp,FASTRUBY_TAG_REDO);
      return Qnil;
fastruby_local_next:
      longjmp(pframe->jmp,FASTRUBY_TAG_NEXT);
      return Qnil;


      }
    "
  } + "((VALUE)pframe#{repass_var ? ", " + repass_var : "" })"
end

#inline_block_reference(arg, nolocals = false) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 761

def inline_block_reference(arg, nolocals = false)
  code = nil

  if arg.instance_of? FastRuby::FastRubySexp
    code = to_c(arg);
  else
    code = arg
  end

  anonymous_function{ |name| "
    static VALUE #{name}(VALUE param) {
      #{@frame_struct} *pframe = (void*)param;

      #{nolocals ? "" : "#{@locals_struct} *plocals = (void*)pframe->plocals;"}
      VALUE last_expression = Qnil;

      #{code};
      return last_expression;
      }
    "
  }
end

#inline_ruby(proced, parameter) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 818

def inline_ruby(proced, parameter)
  "rb_funcall(#{proced.__id__}, #{intern_num :call}, 1, #{parameter})"
end

#intern_num(symbol) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 1349

def intern_num(symbol)
  @intern_num_hash = Hash.new unless @intern_num_hash
  return @intern_num_hash[symbol] if @intern_num_hash[symbol]

  name = self.add_global_name("ID", 0);

  init_extra << "
    #{name} = rb_intern(\"#{symbol.to_s}\");
  "

  @intern_num_hash[symbol] = name

  name
end

#literal_value(value) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 963

def literal_value(value)
  @literal_value_hash = Hash.new unless @literal_value_hash
  return @literal_value_hash[value] if @literal_value_hash[value]

  name = self.add_global_name("VALUE", "Qnil");

  begin

    str = Marshal.dump(value)


    if value.instance_of? Module

      container_str = value.to_s.split("::")[0..-2].join("::")

      init_extra << "
        #{name} = rb_define_module_under(
                #{container_str == "" ? "rb_cObject" : literal_value(eval(container_str))}
                ,\"#{value.to_s.split("::").last}\");

        rb_funcall(#{name},#{intern_num :gc_register_object},0);
      "
    elsif value.instance_of? Class
      container_str = value.to_s.split("::")[0..-2].join("::")

      str_class_name = value.to_s.split("::").last

      if (str_class_name == "Object")
        init_extra << "
          #{name} = rb_cObject;
        "
      else
        init_extra << "
          #{name} = rb_define_class_under(
                  #{container_str == "" ? "rb_cObject" : literal_value(eval(container_str))}
                  ,\"#{str_class_name}\"
                  ,#{value.superclass == Object ? "rb_cObject" : literal_value(value.superclass)});

          rb_funcall(#{name},#{intern_num :gc_register_object},0);
        "
      end
    elsif value.instance_of? Array
      init_extra << "
        #{name} = rb_ary_new3(#{value.size}, #{value.map{|x| literal_value x}.join(",")} );
        rb_funcall(#{name},#{intern_num :gc_register_object},0);
      "
    else
      
      require "base64"

      init_extra << "
      
        {
          VALUE encoded_str = rb_str_new2(#{Base64.encode64(str).inspect});
          VALUE str = rb_funcall(rb_cObject, #{intern_num :decode64}, 1, encoded_str);
          #{name} = rb_marshal_load(str);
          
          rb_funcall(#{name},#{intern_num :gc_register_object},0);
        }

      "
    end
  rescue TypeError => e
    @no_cache = true
    FastRuby.logger.info "#{value} disabling cache for extension"
    init_extra << "
      #{name} = rb_funcall(rb_const_get(rb_cObject, #{intern_num :ObjectSpace}), #{intern_num :_id2ref}, 1, INT2FIX(#{value.__id__}));
    "

  end
 @literal_value_hash[value] = name

  name
end

#locals_accessor ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 668

def locals_accessor
  "plocals->"
end

#locals_scope(locals) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 672

def locals_scope(locals)
   old_locals = @locals
   old_locals_struct = @locals_struct

   @locals = locals
    @locals_struct = "struct {
    int size;
    void* call_frame;
    void* parent_locals;
    void* pframe;
    void* block_function_address;
    void* block_function_param;
    VALUE active;
    VALUE targetted;
    VALUE return_value;
    #{@locals.map{|l| "VALUE #{l};\n"}.join}
    }"

  begin
    yield
  ensure
    @locals = old_locals
    @locals_struct = old_locals_struct
  end
end

#on_block ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 714

def on_block
  old_on_block = @on_block
  @on_block = true
  return yield
ensure
  @on_block = old_on_block
end

#protected_block(inner_code, always_rescue = false, repass_var = nil, nolocals = false) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 822

def protected_block(inner_code, always_rescue = false,repass_var = nil, nolocals = false)
  body = nil
  rescue_args = nil

    body =  anonymous_function{ |name| "
      static VALUE #{name}(VALUE param) {

        #{@frame_struct} frame;

        typeof(frame)* volatile pframe;
        
        #{if repass_var
        "typeof(frame)* parent_frame = ((typeof(pframe))((void**)param)[0]);"
        else
        "typeof(frame)* parent_frame = (typeof(pframe))param;"
        end
        }

        frame.parent_frame = 0;
        frame.return_value = Qnil;
        frame.rescue = 0;
        frame.last_error = Qnil;
        frame.targetted = 0;
        frame.thread_data = parent_frame->thread_data;
        frame.next_recv = parent_frame->next_recv;
        if (frame.thread_data == 0) frame.thread_data = rb_current_thread_data();

        pframe = &frame;

        #{
        nolocals ? "frame.plocals = 0;" : "#{@locals_struct}* plocals = parent_frame->plocals;
        frame.plocals = plocals;
        "
        }

        int aux = setjmp(frame.jmp);
        if (aux != 0) {

          if (frame.targetted == 1) {
            return frame.return_value;
          } else {
            frb_jump_tag(aux);
          }
        }

        #{if repass_var 
          "VALUE #{repass_var} = (VALUE)((void**)param)[1];"
        end
        }
          volatile VALUE last_expression = Qnil;
          #{inner_code};
          return last_expression;
        }
      "
    }

  if repass_var
    rescue_args = ""
    rescue_args = "(VALUE)(VALUE[]){(VALUE)pframe,(VALUE)#{repass_var}}"
  else
    rescue_args = "(VALUE)pframe"
  end

  wrapper_code = "
        if (str.state >= 0x80) {
          longjmp(pframe->jmp, str.state);
        } else {
          if (str.last_error != Qnil) {
              // raise emulation
              pframe->thread_data->exception = str.last_error;
              longjmp(pframe->jmp, FASTRUBY_TAG_RAISE);
              return Qnil;
          }
        }
    "
    
    return_err_struct = "struct {
        VALUE last_error;
        int state;
      }
      "

    rescue_body = anonymous_function{ |name| "
      static VALUE #{name}(VALUE param, VALUE err) {
        #{return_err_struct} *pstr = (void*)param;
        
        if (rb_obj_is_instance_of(err, #{literal_value FastRuby::JumpTagException})) {
          pstr->state = FIX2INT(rb_funcall(err, #{intern_num :state}, 0));
        } else {
          pstr->last_error = err;
        }
        
        return Qnil;
      }
    "
  }

  rescue_code = "rb_rescue2(#{body}, #{rescue_args}, #{rescue_body}, (VALUE)&str, rb_eException, (VALUE)0)"

  if always_rescue
    inline_block "
      #{return_err_struct} str;
      
      str.state = 0;
      str.last_error = Qnil;
      
      pframe->last_error = Qnil;
      VALUE result = #{rescue_code};

      #{wrapper_code}

      return result;
    ", repass_var, nolocals
  else
    inline_block "
      VALUE result;
      #{return_err_struct} str;
      
      str.state = 0;
      str.last_error = Qnil;
      
      pframe->last_error = Qnil;

      if (pframe->rescue) {
        result = #{rescue_code};
        #{wrapper_code}
      } else {
        VALUE last_expression = Qnil;
        #{inner_code};
        return last_expression;
      }

      return result;
    ", repass_var, nolocals
  end
end

#to_c(tree, result_variable = nil) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 186

def to_c(tree, result_variable = nil)
  return "Qnil" unless tree
  
  mname = "to_c_" + tree[0].to_s
  
  if result_variable
    if method(mname).arity == 1
      "#{result_variable} = #{send(mname, tree)};\n"
    else
      send(mname, tree, result_variable)
    end 
  else
    send(mname, tree)
  end
end

#to_c_method(tree, signature = nil) ⇒ Object 



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# File 'lib/fastruby/translator/translator.rb', line 349

def to_c_method(tree, signature = nil)
  
  if tree[0] == :defn
    method_name = tree[1]
    original_args_tree = tree[2]
    block_argument = tree[2].find{|x| x.to_s[0] == ?&}
    impl_tree = tree[3][1]
  elsif tree[0] == :defs
    method_name = tree[2]
    original_args_tree = tree[3]
    block_argument = tree[3].find{|x| x.to_s[0] == ?&}
    impl_tree = tree[4][1]
  end

  args_tree = original_args_tree.select{|x| x.to_s[0] != ?&}

    initialize_method_structs(original_args_tree)
    
    if options[:main] then
      strargs = if args_tree.size > 1
        "VALUE self, VALUE block, VALUE _parent_frame, #{(0..signature.size-1).map{|x| "VALUE arg#{x}"}.join(",")}"
      else
        "VALUE self, VALUE block, VALUE _parent_frame"
      end

    else
      
      strargs = "VALUE self, VALUE block, VALUE _parent_frame, int argc, VALUE* argv"
      
      splat_arg = args_tree[1..-1].find{|x| x.to_s.match(/\*/) }
  
      maxargnum = args_tree[1..-1].count{ |x|
          if x.instance_of? Symbol
            not x.to_s.match(/\*/) and not x.to_s.match(/\&/)
          else
            false
          end
        }
        
      minargnum = maxargnum
        
      args_tree[1..-1].each do |subtree|
        unless subtree.instance_of? Symbol
          if subtree[0] == :block
            minargnum = minargnum - (subtree.size-1)
          end
        end
      end
      
      if args_tree[1..-1].find{|x| x.to_s.match(/\*/)}
        maxargnum = 2147483647
      end
      
      read_arguments_code = ""
  
  
      validate_arguments_code = if signature.size-1 < minargnum
          "
            rb_raise(rb_eArgError, \"wrong number of arguments (#{signature.size-1} for #{minargnum})\");
          "
      elsif signature.size-1 > maxargnum
          "
            rb_raise(rb_eArgError, \"wrong number of arguments (#{signature.size-1} for #{maxargnum})\");
          "
      else
  
          default_block_tree = args_tree[1..-1].find{|subtree|
            unless subtree.instance_of? Symbol
              if subtree[0] == :block
                next true
              end
            end
  
            false
          }
          
          i = -1
  
          normalargsnum = args_tree[1..-1].count{|subtree|
            if subtree.instance_of? Symbol
              unless subtree.to_s.match(/\*/) or subtree.to_s.match(/\&/)
                next true
              end
            end
                  
            false
          }
  
          read_arguments_code = args_tree[1..-1].map { |arg_|
              arg = arg_.to_s
              i = i + 1
  
              if i < normalargsnum
                if i < signature.size-1
                  "plocals->#{arg} = argv[#{i}];\n"
                else
                    
                  if default_block_tree
                    initialize_tree = default_block_tree[1..-1].find{|subtree| subtree[1] == arg_}
                    if initialize_tree
                      to_c(initialize_tree) + ";\n"
                    else
                      ""
                    end
                  else
                      ";\n"
                  end
                end
              else
                ""
              end
            }.join("")
            
          if splat_arg
                if signature.size-1 < normalargsnum then
                  read_arguments_code << "
                    plocals->#{splat_arg.to_s.gsub("*","")} = rb_ary_new3(0);
                    "
                else
                  read_arguments_code << "
                    plocals->#{splat_arg.to_s.gsub("*","")} = rb_ary_new4(
                          #{(signature.size-1) - (normalargsnum)}, argv+#{normalargsnum} 
                          );
                  "
                end
  
          end
        
        
          ""
      end
  
      if block_argument
  
        proc_reyield_block_tree = s(:iter, s(:call, nil, :proc, s(:arglist)), s(:masgn, s(:array, s(:splat, s(:lasgn, :__xproc_arguments)))), s(:yield, s(:splat, s(:lvar, :__xproc_arguments))))
  
        require "fastruby/sexp_extension"
  
        read_arguments_code << "
          if (pblock ? pblock->proc != Qnil : 0) {
            plocals->#{block_argument.to_s.gsub("&","")} = pblock->proc;
          } else {
            plocals->#{block_argument.to_s.gsub("&","")} = #{to_c FastRuby::FastRubySexp.from_sexp(proc_reyield_block_tree)};
          }
        "

        read_arguments_code << "
          if (pblock) {
          rb_ivar_set(plocals->#{block_argument.to_s.gsub("&","")},
                    #{intern_num "__block_address"}, PTR2NUM(pblock->block_function_address)); 
          rb_ivar_set(plocals->#{block_argument.to_s.gsub("&","")},
                    #{intern_num "__block_param"}, PTR2NUM(pblock->block_function_param));            
          }            

        "
      end

    end

    require "fastruby/sexp_extension"       
    scope_mode = FastRuby::ScopeModeHelper.get_scope_mode(tree)

    ret = "VALUE #{@alt_method_name || method_name}(#{options[:main] ? "VALUE self" : strargs}) {
      #{validate_arguments_code}

      #{@frame_struct} frame;
      #{@frame_struct} * volatile pframe;
      
      frame.parent_frame = #{options[:main] ? "0"  : "(void*)_parent_frame"};
      frame.return_value = Qnil;
      frame.rescue = 0;
      frame.targetted = 0;
      frame.thread_data = #{options[:main] ? "0" : "((typeof(pframe))_parent_frame)->thread_data"};
      if (frame.thread_data == 0) frame.thread_data = rb_current_thread_data();

      int stack_chunk_instantiated = 0;
      
#{
if scope_mode == :dag
  " 
      volatile VALUE rb_previous_stack_chunk = Qnil;
      VALUE rb_stack_chunk = frame.thread_data->rb_stack_chunk;
      struct STACKCHUNK* volatile stack_chunk = 0;

      if (rb_stack_chunk != Qnil) {
        Data_Get_Struct(rb_stack_chunk,struct STACKCHUNK,stack_chunk);
      }

      if (stack_chunk == 0 || (stack_chunk == 0 ? 0 : stack_chunk_frozen(stack_chunk)) ) {
        rb_previous_stack_chunk = rb_stack_chunk;
        rb_gc_register_address(&rb_stack_chunk);
        stack_chunk_instantiated = 1;

        rb_stack_chunk = rb_stack_chunk_create(Qnil);
        frame.thread_data->rb_stack_chunk = rb_stack_chunk;

        rb_ivar_set(rb_stack_chunk, #{intern_num :_parent_stack_chunk}, rb_previous_stack_chunk);

        Data_Get_Struct(rb_stack_chunk,struct STACKCHUNK,stack_chunk);
      }

      #{@locals_struct}* volatile plocals;

      volatile int previous_stack_position = stack_chunk_get_current_position(stack_chunk);
      plocals = (typeof(plocals))stack_chunk_alloc(stack_chunk ,sizeof(typeof(*plocals))/sizeof(void*));
      
  "
else
  "
      #{@locals_struct} locals;
      typeof(locals) * volatile plocals = &locals;
  "
end
}

      plocals->parent_locals = (frame.thread_data->last_plocals);
      void* volatile old_parent_locals = frame.thread_data->last_plocals;
      
      #{
      if scope_mode == :dag 
        "frame.thread_data->last_plocals = plocals;\n"
      end
      }
      
      frame.plocals = plocals;
      plocals->active = Qtrue;
      plocals->targetted = Qfalse;
      plocals->pframe = (&frame);
      plocals->call_frame = (0);

      pframe = (void*)&frame;

      #{@block_struct} * volatile pblock;
      volatile VALUE last_expression = Qnil;

      int aux = setjmp(pframe->jmp);
      if (aux != 0) {
        plocals->active = Qfalse;

#{
if scope_mode == :dag
  " 
        stack_chunk_set_current_position(stack_chunk, previous_stack_position);

        if (stack_chunk_instantiated) {
          rb_gc_unregister_address(&rb_stack_chunk);
          frame.thread_data->rb_stack_chunk = rb_previous_stack_chunk;
        }
"
end
}            
        #{
        unless options[:main]
          "
          if (plocals->targetted == Qfalse || aux != FASTRUBY_TAG_RETURN) {
            frame.thread_data->last_plocals = old_parent_locals;
            
            longjmp(((typeof(pframe))_parent_frame)->jmp,aux);
          }
          "
        end
        }

        frame.thread_data->last_plocals = old_parent_locals;
        
        return plocals->return_value;
      }

      plocals->self = self;

      #{
      unless options[:main]
        "
        pblock = (void*)block;
        if (pblock) {
          plocals->block_function_address = pblock->block_function_address;
          plocals->block_function_param = pblock->block_function_param;
        } else {
          plocals->block_function_address = (0);
          plocals->block_function_param = 0;
        }
        "
      end
      }

      #{read_arguments_code}

      #{to_c impl_tree, "last_expression"};
      
local_return:
#{
if scope_mode == :dag
"
      stack_chunk_set_current_position(stack_chunk, previous_stack_position);

      if (stack_chunk_instantiated) {
        rb_gc_unregister_address(&rb_stack_chunk);
        frame.thread_data->rb_stack_chunk = rb_previous_stack_chunk;
      }
"
end
}
      plocals->active = Qfalse;
      
      frame.thread_data->last_plocals = old_parent_locals;
      
      return last_expression;
    }"

    add_main
    extra_code << ret
  
  "
    static VALUE dummy_#{method_name}_#{alt_method_name}_#{rand(1000000000000000000000000000000000)}(VALUE a) {
      return Qnil;
    }
  "
end