71 lines
3.0 KiB
Ruby
71 lines
3.0 KiB
Ruby
module Risc
|
|
module Builtin
|
|
module Word
|
|
module ClassMethods
|
|
include CompileHelper
|
|
|
|
def putstring( context)
|
|
compiler = compiler_for(:Word , :putstring ,{})
|
|
compiler.add_slot_to_reg( "putstring" , :message , :receiver , :new_message )
|
|
index = Parfait::Word.get_length_index
|
|
reg = RiscValue.new(:r2 , :Integer)
|
|
compiler.add_slot_to_reg( "putstring" , :new_message , index , reg )
|
|
Kernel.emit_syscall( compiler , :putstring )
|
|
compiler.add_mom( Mom::ReturnSequence.new)
|
|
compiler.method
|
|
end
|
|
|
|
# self[index] basically. Index is the first arg > 0
|
|
# return (and word sized int) is stored in return_value
|
|
def get_internal_byte( context)
|
|
compiler = compiler_for(:Word , :get_internal_byte , {at: :Integer})
|
|
source = "get_internal_byte"
|
|
me , index = compiler.self_and_int_arg(source)
|
|
compiler.reduce_int( source + " fix arg", index )
|
|
# reduce me to me[index]
|
|
compiler.add_byte_to_reg( source , me , index , me)
|
|
compiler.add_new_int(source, me , index)
|
|
# and put it back into the return value
|
|
compiler.add_reg_to_slot( source , index , :message , :return_value)
|
|
compiler.add_mom( Mom::ReturnSequence.new)
|
|
return compiler.method
|
|
end
|
|
|
|
# self[index] = val basically. Index is the first arg ( >0),
|
|
# value the second
|
|
# return self
|
|
def set_internal_byte( context )
|
|
compiler = compiler_for(:Word, :set_internal_byte , {at: :Integer , :value => :Integer} )
|
|
source = "set_internal_byte"
|
|
me , index = compiler.self_and_int_arg(source)
|
|
value = compiler.load_int_arg_at(source , 2 )
|
|
compiler.reduce_int( source + " fix me", value )
|
|
compiler.reduce_int( source + " fix arg", index )
|
|
compiler.add_reg_to_byte( source , value , me , index)
|
|
compiler.add_reg_to_slot( source , me , :message , :return_value)
|
|
compiler.add_mom( Mom::ReturnSequence.new)
|
|
return compiler.method
|
|
end
|
|
|
|
# resolve the method name of self, on the given object
|
|
# may seem wrong way around at first sight, but we know the type of string. And
|
|
# thus resolving this method happens at compile time, whereas any method on an
|
|
# unknown self (the object given) needs resolving and that is just what we are doing
|
|
# ( ie the snake bites it's tail)
|
|
# This method is just a placeholder until boot is over and the real method is
|
|
# parsed.
|
|
def resolve_method( context)
|
|
compiler = compiler_for(:Word, :resolve_method , {:value => :Object} )
|
|
args = compiler.method.arguments
|
|
len = args.instance_length
|
|
raise "Compiler arg number mismatch, method=#{args} " if len != 2
|
|
compiler.add_mom( Mom::ReturnSequence.new)
|
|
return compiler.method
|
|
end
|
|
|
|
end
|
|
extend ClassMethods
|
|
end
|
|
end
|
|
end
|