Class: Wardite::Op

Inherits:
Object
  • Object
show all
Defined in:
lib/wardite/instruction.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(code, operand) ⇒ Op

Returns a new instance of Op.



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# File 'lib/wardite/instruction.rb', line 10

def initialize(code, operand)
  @code = code
  @operand = operand
end

Instance Attribute Details

#code ⇒ Object

: Symbol



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# File 'lib/wardite/instruction.rb', line 4

def code
  @code
end

#operand ⇒ Object

: Array



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# File 'lib/wardite/instruction.rb', line 6

def operand
  @operand
end

Class Method Details

.i2type(code) ⇒ Object

See Also:



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# File 'lib/wardite/instruction.rb', line 68

def self.i2type(code)
  case code
  when 0x7f
    :i32
  when 0x7e
    :i64
  when 0x7d
    :f32
  when 0x7c
    :f64
  else
    raise "unknown type code #{code}"
  end
end

.operand_of(code) ⇒ Object 



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# File 'lib/wardite/instruction.rb', line 50

def self.operand_of(code)
  case code
  when :local_get, :local_set, :call
    [:u32]
  when :i32_const
    [:i32]
  when :i32_store
    [:u32, :u32]
  when :if
    [:u8_block]
  else
    []
  end
end

.to_sym(chr) ⇒ Object 



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# File 'lib/wardite/instruction.rb', line 17

def self.to_sym(chr)
  case chr
  when "\u0004"
    :if
  when "\u000b"
    :end
  when "\u000f"
    :return
  when "\u0010"
    :call
  when "\u0020"
    :local_get
  when "\u0021"
    :local_set
  when "\u0036"
    :i32_store
  when "\u0041"
    :i32_const
  when "\u0048"
    :i32_lts
  when "\u004d"
    :i32_leu
  when "\u006a"
    :i32_add
  when "\u006b"
    :i32_sub
  else
    raise NotImplementedError, "unimplemented: #{"%04x" % chr.ord}"
  end
end