# Copyright (c) 2011 Advanced Micro Devices, Inc.
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#
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# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
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# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
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# this software without specific prior written permission.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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from slicc.ast.DeclAST import DeclAST
from slicc.symbols import Func, Type


class StateDeclAST(DeclAST):
    def __init__(self, slicc, type_ast, pairs, states):
        super().__init__(slicc, pairs)

        self.type_ast = type_ast
        self.states = states

    def __repr__(self):
        return f"[StateDecl: {self.type_ast}]"

    def files(self, parent=None):
        if "external" in self:
            return set()

        if parent:
            ident = f"{parent}_{self.type_ast.ident}"
        else:
            ident = self.type_ast.ident
        s = set((f"{ident}.hh", f"{ident}.cc"))
        return s

    def generate(self):
        ident = str(self.type_ast)

        # Make the new type
        t = Type(
            self.symtab, ident, self.location, self.pairs, self.state_machine
        )
        self.symtab.newSymbol(t)

        # Add all of the states of the type to it
        for state in self.states:
            state.generate(t)

        # Add the implicit State_to_string method - FIXME, this is a bit dirty
        func_id = f"{t.c_ident}_to_string"

        pairs = {"external": "yes"}
        func = Func(
            self.symtab,
            func_id + "_" + t.ident,
            func_id,
            self.location,
            self.symtab.find("std::string", Type),
            [t],
            [],
            "",
            pairs,
        )
        self.symtab.newSymbol(func)

        # Add the State_to_permission method
        func_id = f"{t.c_ident}_to_permission"

        pairs = {"external": "yes"}
        func = Func(
            self.symtab,
            func_id + "_" + t.ident,
            func_id,
            self.location,
            self.symtab.find("AccessPermission", Type),
            [t],
            [],
            "",
            pairs,
        )
        self.symtab.newSymbol(func)