import struct
import types
from ..basetarget import Register, Instruction, Target
from ppci import CompilerError
from .registers import r10, r11, r12, r13, r14, r15
from .instructions import Reti, Mov, Add

# Create the target class (singleton):

class Msp430Target(Target):
    def __init__(self):
        super().__init__('msp430')

        # Registers:
        self.add_keyword('r10')
        self.add_keyword('r11')
        self.add_keyword('r12')
        self.add_keyword('r13')
        self.add_keyword('r14')
        self.add_keyword('r15')
        self.add_rule('reg', ['r10'], lambda rhs: r10)
        self.add_rule('reg', ['r11'], lambda rhs: r11)
        self.add_rule('reg', ['r12'], lambda rhs: r12)
        self.add_rule('reg', ['r13'], lambda rhs: r13)
        self.add_rule('reg', ['r14'], lambda rhs: r14)
        self.add_rule('reg', ['r15'], lambda rhs: r15)

        # Instructions rules:
        self.add_keyword('mov')
        self.add_instruction(['mov', 'reg', ',', 'reg'],
            lambda rhs: Mov(rhs[1], rhs[3]))
        self.add_instruction(['mov', 'imm16', ',', 'reg'],
            lambda rhs: Mov(rhs[1], rhs[3]))

        self.add_keyword('add')
        self.add_instruction(['add', 'reg', ',', 'reg'],
            lambda rhs: Add(rhs[1], rhs[3]))

        self.add_keyword('reti')
        self.add_instruction(['reti'], lambda rhs: Reti())



msp430target = Msp430Target()


# Target description for the MSP430 processor


msp430target.registers.append(r10)
msp430target.registers.append(r11)
msp430target.registers.append(r12)
msp430target.registers.append(r13)
msp430target.registers.append(r14)
msp430target.registers.append(r15)