Class: ABI::Interface

Inherits:
Object
  • Object
show all
Defined in:
lib/abiparser/interface.rb

Overview

rename to QueryInterface or SupportInterface

or InterfaceType or InterfaceId or such - why? why not?

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*functions) ⇒ Interface

todo/fix: make sure full function defs get passed in (not only sigs!!!)



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# File 'lib/abiparser/interface.rb', line 14

def initialize( *functions )
  @functions = functions
  @selectors = {}

  @functions.each do |func|
    sig = func
    sighash =  keccak256( sig )[0,4].hexdigest
    puts "0x#{sighash} => #{sig}"

    ## assert - no duplicates allowed
    if @selectors[sighash]
      puts "!! ERROR - duplicate function signature #{sig}; already in use; sorry"
      exit 1
    end

    @selectors[sighash] = sig
  end
  @interface_id = calc_interface_id
end

Instance Attribute Details

#interface_id ⇒ Object (readonly)

Returns the value of attribute interface_id.



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# File 'lib/abiparser/interface.rb', line 9

def interface_id
  @interface_id
end

Instance Method Details

#calc_interface_id ⇒ Object 



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# File 'lib/abiparser/interface.rb', line 35

def calc_interface_id
  interface_id = nil
  @selectors.each do |sighash,_|
    sighash = sighash.hex_to_bin   ## note: convert to binary string (from hexstring)!!
    interface_id = if interface_id.nil?
      sighash   ## init with sighash
    else
      interface_id ^ sighash   ## use xor
    end
  end
  interface_id.hexdigest
end

#selectors ⇒ Object

return hexstrings of sig(natures) - why? why not? rename to sighashes - why? why not?



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# File 'lib/abiparser/interface.rb', line 51

def selectors()  @selectors.keys;  end

#support?(sig) ⇒ Boolean Also known as: supports?

Returns:

  • (Boolean) 


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# File 'lib/abiparser/interface.rb', line 53

def support?( sig )
   Utils.support?( @selectors.keys, sig )
end