Class: CodeTools::Generator

Inherits:
Object
  • Object
show all
Includes:
GeneratorMethods
Defined in:
lib/rubinius/code/compiler/generator.rb

Defined Under Namespace

Classes: BasicBlock, Label

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from GeneratorMethods

#add_scope, #allow_private, #b_if, #b_if_int, #b_if_serial, #check_interrupts, #check_serial, #check_serial_private, #clear_exception, #dup, #dup_many, #emit_push_literal, #goto, #goto_if_equal, #goto_if_false, #goto_if_nil, #goto_if_not_equal, #goto_if_not_nil, #goto_if_not_undefined, #goto_if_true, #goto_if_undefined, #instance_of, #kind_of, #m_bytes, #m_counter, #m_sum, #m_time_stamp, #m_timer_start, #m_timer_stop, #m_value, #make_array, #move_down, #n_iadd, #n_iadd_o, #n_idiv, #n_idiv_o, #n_ieq, #n_ige, #n_igt, #n_ile, #n_ilt, #n_imul, #n_imul_o, #n_ine, #n_ipopcnt, #n_isub, #n_isub_o, #noop, #p_any, #p_call, #p_char, #p_char_set, #p_choice, #p_commit, #p_commit_back, #p_commit_partial, #p_end, #p_fail, #p_fail_twice, #p_init, #p_jump, #p_return, #p_span, #p_test_any, #p_test_char, #p_test_char_set, #pop, #pop_many, #pop_unwind, #push_block, #push_cpath_top, #push_current_exception, #push_exception_state, #push_false, #push_file, #push_has_block, #push_int, #push_memo, #push_mirror, #push_my_field, #push_my_offset, #push_nil, #push_rubinius, #push_scope, #push_self, #push_stack_local, #push_true, #push_type, #push_undef, #push_variables, #r_copy, #r_load_int, #r_load_literal, #r_load_local, #r_load_local_depth, #r_load_stack, #r_store_int, #r_store_local, #r_store_local_depth, #r_store_stack, #restore_exception_state, #rotate, #set_call_flags, #set_const, #set_const_at, #set_stack_local, #setup_unwind, #shift_array, #store_my_field, #string_append, #swap, #yield_debugger

Constructor Details

#initialize ⇒ Generator

Returns a new instance of Generator.



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# File 'lib/rubinius/code/compiler/generator.rb', line 245

def initialize
  @stream = []
  @literals_map = Hash.new { |h,k| h[k] = add_literal(k) }
  @literals = []
  @ip = 0
  @modstack = []
  @break = nil
  @redo = nil
  @next = nil
  @retry = nil
  @last_line = nil
  @file = nil
  @lines = []
  @primitive = nil
  @instruction = nil
  @for_block = nil
  @for_module_body = nil

  @required_args = 0
  @post_args = 0
  @total_args = 0
  @arity = 0

  @detected_args = 0
  @detected_locals = 0

  @splat_index = nil
  @local_names = nil
  @block_index = nil
  @keywords = nil
  @kwrest_index = nil
  @local_count = 0
  @registers = 0

  @state = []
  @generators = []

  @stack_locals = 0

  @enter_block = new_basic_block
  @current_block = @enter_block
  @max_stack = 0
end

Instance Attribute Details

#arity ⇒ Object

Returns the value of attribute arity.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def arity
  @arity
end

#block_index ⇒ Object

Returns the value of attribute block_index.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def block_index
  @block_index
end

#break ⇒ Object

Returns the value of attribute break.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def break
  @break
end

#current_block ⇒ Object

Returns the value of attribute current_block.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def current_block
  @current_block
end

#detected_args ⇒ Object

Returns the value of attribute detected_args.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def detected_args
  @detected_args
end

#detected_locals ⇒ Object

Returns the value of attribute detected_locals.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def detected_locals
  @detected_locals
end

#file ⇒ Object

Returns the value of attribute file.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def file
  @file
end

#for_block ⇒ Object

Returns the value of attribute for_block.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def for_block
  @for_block
end

#for_module_body ⇒ Object

Returns the value of attribute for_module_body.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def for_module_body
  @for_module_body
end

#ip ⇒ Object (readonly)

Returns the value of attribute ip.



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# File 'lib/rubinius/code/compiler/generator.rb', line 289

def ip
  @ip
end

#iseq ⇒ Object (readonly)

Returns the value of attribute iseq.



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# File 'lib/rubinius/code/compiler/generator.rb', line 289

def iseq
  @iseq
end

#keywords ⇒ Object

Returns the value of attribute keywords.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def keywords
  @keywords
end

#kwrest_index ⇒ Object

Returns the value of attribute kwrest_index.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def kwrest_index
  @kwrest_index
end

#literals ⇒ Object (readonly)

Returns the value of attribute literals.



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# File 'lib/rubinius/code/compiler/generator.rb', line 289

def literals
  @literals
end

#local_count ⇒ Object

Returns the value of attribute local_count.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def local_count
  @local_count
end

#local_names ⇒ Object

Returns the value of attribute local_names.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def local_names
  @local_names
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def name
  @name
end

#next ⇒ Object

Returns the value of attribute next.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def next
  @next
end

#post_args ⇒ Object

Returns the value of attribute post_args.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def post_args
  @post_args
end

#primitive ⇒ Object

Returns the value of attribute primitive.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def primitive
  @primitive
end

#redo ⇒ Object

Returns the value of attribute redo.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def redo
  @redo
end

#registers ⇒ Object

Returns the value of attribute registers.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def registers
  @registers
end

#required_args ⇒ Object

Returns the value of attribute required_args.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def required_args
  @required_args
end

#retry ⇒ Object

Returns the value of attribute retry.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def retry
  @retry
end

#splat_index ⇒ Object

Returns the value of attribute splat_index.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def splat_index
  @splat_index
end

#stream ⇒ Object (readonly)

Returns the value of attribute stream.



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# File 'lib/rubinius/code/compiler/generator.rb', line 289

def stream
  @stream
end

#total_args ⇒ Object

Returns the value of attribute total_args.



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# File 'lib/rubinius/code/compiler/generator.rb', line 290

def total_args
  @total_args
end

Instance Method Details

#accumulate_stack(size) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 467

def accumulate_stack(size)
  @max_stack = size if size > @max_stack
end

#add_generator(generator) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 490

def add_generator(generator)
  index = add_literal generator
  @generators << index
  index
end

#add_literal(literal) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 500

def add_literal(literal)
  index = @literals.size
  @literals << literal
  index
end

#cast_array ⇒ Object

instructions that can cause stack unwinding



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# File 'lib/rubinius/code/compiler/generator.rb', line 596

def cast_array
  super
  unwind
end

#cast_for_multi_block_arg ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 601

def cast_for_multi_block_arg
  super
  unwind
end

#cast_for_single_block_arg ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 606

def cast_for_single_block_arg
  super
  unwind
end

#cast_for_splat_block_arg ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 611

def cast_for_splat_block_arg
  super
  unwind
end

#cast_multi_value ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 616

def cast_multi_value
  super
  unwind
end

#check_frozen ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 621

def check_frozen
  super
  unwind
end

#close ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 440

def close
  if @lines.empty?
    msg = "closing a method definition with no line info: #{file}:#{line}"
    raise Exception, msg
  end

  @lines << @ip
end

#create_block(literal) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 626

def create_block(literal)
  super
  unwind
end

#definition_line(line) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 393

def definition_line(line)
  unless @stream.empty?
    raise Exception, "only use #definition_line first"
  end

  @lines << -1
  @lines << line

  @last_line = line
end

#encode ⇒ Object

Formalizers



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# File 'lib/rubinius/code/compiler/generator.rb', line 304

def encode
  @iseq = Rubinius::InstructionSequence.new @stream.to_tuple

  begin
    # Validate the stack and calculate the max depth
    @enter_block.validate_stack
  rescue Exception => e
    if $DEBUG
      puts "Error computing stack for #{@name}: #{e.message} (#{e.class})"
    end
    raise e
  end

  @generators.each { |x| @literals[x].encode }
end

#ensure_return ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 631

def ensure_return
  super
  unwind
end

#execute(node) ⇒ Object Also known as: run 



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# File 'lib/rubinius/code/compiler/generator.rb', line 296

def execute(node)
  node.bytecode self
end

#find_const(literal) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 636

def find_const(literal)
  super
  unwind
end

#find_literal(literal) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 496

def find_literal(literal)
  @literals_map[literal]
end

#invoke_primitive(literal, count) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 641

def invoke_primitive(literal, count)
  super
  unwind
end

#ip_to_line(ip) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 427

def ip_to_line(ip)
  total = @lines.size - 2
  i = 0

  while i < total
    if ip >= @lines[i] and ip <= @lines[i+2]
      return @lines[i+1]
    end

    i += 2
  end
end

#last_match(mode, which) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 542

def last_match(mode, which)
  push_int Integer(mode)
  push_int Integer(which)
  invoke_primitive :regexp_last_match_result, 2
end

#line ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 423

def line
  @last_line
end

#max_stack_size ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 471

def max_stack_size
  size = @max_stack + @local_count + @stack_locals
  size += 1 if @for_block
  size
end

#new_basic_block ⇒ Object

Helpers



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# File 'lib/rubinius/code/compiler/generator.rb', line 463

def new_basic_block
  BasicBlock.new self
end

#new_label ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 453

def new_label
  Label.new(self)
end

#new_register ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 457

def new_register
  (@registers += 1) - 1
end

#new_stack_local ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 477

def new_stack_local
  idx = @stack_locals
  @stack_locals += 1
  return idx
end

#object_to_s(literal) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 646

def object_to_s(literal)
  super
  unwind
end

#package(klass) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 320

def package(klass)
  @generators.each { |x| @literals[x] = @literals[x].package klass }

  code = klass.new
  code.iseq           = @iseq
  code.literals       = @literals.to_tuple
  code.lines          = @lines.to_tuple

  code.required_args  = @required_args
  code.post_args      = @post_args
  code.total_args     = @total_args
  code.splat          = @splat_index
  code.arity          = @arity
  code.local_count    = @local_count
  code.local_names    = @local_names.to_tuple if @local_names
  code.keywords       = @keywords.to_tuple if @keywords
  code.registers      = @registers

  code.add_metadata :block_index, @block_index if @block_index
  code.add_metadata :kwrest_index, @kwrest_index if @kwrest_index

  code.stack_size     = max_stack_size
  code.file           = @file
  code.name           = @name
  code.primitive      = @primitive

  if @for_block
    code.add_metadata :for_block, true
  end

  if @for_module_body
    code.add_metadata :for_module_body, true
  end

  code
end

#passed_arg(index) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 651

def passed_arg(index)
  super
  unwind
end

#passed_blockarg(count) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 656

def passed_blockarg(count)
  super
  unwind
end

#pop_modifiers ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 389

def pop_modifiers
  @break, @redo, @next, @retry = @modstack.pop
end

#pop_state ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 381

def pop_state
  @state.pop
end

#push_arg(idx) ⇒ Object

Minor meta operations that can be used to detect the number of method arguments needed



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# File 'lib/rubinius/code/compiler/generator.rb', line 516

def push_arg(idx)
  push_local(idx)
  @detected_args = @detected_locals
end

#push_block_arg ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 661

def push_block_arg
  super
  unwind
end

#push_const(literal) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 666

def push_const(literal)
  super
  unwind
end

#push_float(float) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 506

def push_float(float)
  emit_push_literal add_literal(float)
end

#push_generator(generator) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 483

def push_generator(generator)
  index = @literals.size
  push_literal generator
  @generators << index
  index
end

#push_ivar(literal) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 671

def push_ivar(literal)
  super
  unwind
end

#push_literal(literal) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 510

def push_literal(literal)
  emit_push_literal find_literal(literal)
end

#push_local(index) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 521

def push_local(index)
  if @detected_locals <= index
    @detected_locals = index + 1
  end

  super
end

#push_local_depth(depth, index) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 676

def push_local_depth(depth, index)
  super
  unwind
end

#push_modifiers ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 385

def push_modifiers
  @modstack << [@break, @redo, @next, @retry]
end

#push_proc ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 681

def push_proc
  super
  unwind
end

#push_state(scope) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 377

def push_state(scope)
  @state << AST::State.new(scope)
end

#raise_break ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 686

def raise_break
  super
  unwind
end

#raise_exc ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 691

def raise_exc
  super
  unwind
end

#raise_return ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 696

def raise_return
  super
  unwind
end

#reraise ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 701

def reraise
  super
  unwind
end

#ret ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 590

def ret
  super 0
end

#send(meth, count, priv = false) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 548

def send(meth, count, priv=false)
  allow_private if priv

  unless count.kind_of? Fixnum
    raise CompileError, "count must be a number"
  end

  if count == 0
    send_method meth
  else
    send_stack meth, count
  end
end

#send_method(literal) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 706

def send_method(literal)
  super
  unwind
end

#send_primitive(name) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 449

def send_primitive(name)
  @primitive = name
end

#send_stack(literal, count) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 711

def send_stack(literal, count)
  super
  unwind
end

#send_stack_with_block(literal, count) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 716

def send_stack_with_block(literal, count)
  super
  unwind
end

#send_stack_with_splat(literal, count) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 721

def send_stack_with_splat(literal, count)
  super
  unwind
end

#send_super(meth, args, splat = false) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 582

def send_super(meth, args, splat=false)
  if splat
    send_super_stack_with_splat meth, args
  else
    send_super_stack_with_block meth, args
  end
end

#send_super_stack_with_block(literal, count) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 726

def send_super_stack_with_block(literal, count)
  super
  unwind
end

#send_super_stack_with_splat(literal, count) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 731

def send_super_stack_with_splat(literal, count)
  super
  unwind
end

#send_vcall(literal) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 736

def send_vcall(literal)
  super
  unwind
end

#send_with_block(meth, count, priv = false) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 562

def send_with_block(meth, count, priv=false)
  allow_private if priv

  unless count.kind_of? Fixnum
    raise CompileError, "count must be a number"
  end

  send_stack_with_block meth, count
end

#send_with_splat(meth, args, priv = false, concat = false) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 572

def send_with_splat(meth, args, priv=false, concat=false)
  val = 0
  val |= Rubinius::InstructionSet::CALL_FLAG_CONCAT if concat
  set_call_flags val unless val == 0

  allow_private if priv

  send_stack_with_splat meth, args
end

#set_arg(idx) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 529

def set_arg(idx)
  set_local(idx)
  @detected_args = @detected_locals
end

#set_ivar(literal) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 741

def set_ivar(literal)
  super
  unwind
end

#set_line(line) ⇒ Object

Raises:

  • (Exception) 


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# File 'lib/rubinius/code/compiler/generator.rb', line 404

def set_line(line)
  raise Exception, "source code line cannot be nil" unless line

  if !@last_line
    @lines << @ip
    @lines << line
    @last_line = line
  elsif line != @last_line
    if @lines[-2] == @ip
      @lines[-1] = line
    else
      @lines << @ip
      @lines << line
    end

    @last_line = line
  end
end

#set_local(index) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 534

def set_local(index)
  if @detected_locals <= index
    @detected_locals = index + 1
  end

  super
end

#set_local_depth(depth, index) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 746

def set_local_depth(depth, index)
  super
  unwind
end

#state ⇒ Object

Commands (these don’t generate data in the stream)



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# File 'lib/rubinius/code/compiler/generator.rb', line 373

def state
  @state.last
end

#string_build(count) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 751

def string_build(count)
  super
  unwind
end

#string_dup ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 756

def string_dup
  super
  unwind
end

#unwind ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 761

def unwind
  super 0
end

#use_detected ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 357

def use_detected
  if @required_args < @detected_args
    @required_args = @detected_args
  end

  if @total_args < @detected_args
    @total_args = @detected_args
  end

  if @local_count < @detected_locals
    @local_count = @detected_locals
  end
end

#yield_splat(count) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 765

def yield_splat(count)
  super
  unwind
end

#yield_stack(count) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 770

def yield_stack(count)
  super
  unwind
end

#zsuper(literal) ⇒ Object 



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# File 'lib/rubinius/code/compiler/generator.rb', line 775

def zsuper(literal)
  super
  unwind
end