  -*- erlang - indent - level : 4;indent - tabs - mode : nil -*-
%% ex: ts=4 sw=4 et
%%
  This file is part of Triq - Trifork QuickCheck
%%
  Copyright ( c ) 2010 - 2013 by 
%%
  Licensed under the Apache License , Version 2.0 ( the " License " ) ;
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%%     -2.0
%%
%% Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an " AS IS " BASIS ,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
-module(triq_fsm).

-export([commands/1,
         commands/2,
         run_commands/2,
         run_commands/3,
         state_names/1]).
-import(triq_expr,
        [eval/2]).


  FSM API

commands(Module) when is_atom(Module) ->
    triq_statem_fsm:commands(Module).

commands(Module, {InitialName, State}) when is_atom(Module) ->
    triq_statem_fsm:commands(Module, {InitialName, State}).

run_commands(Module, Commands) ->
    run_commands(Module, Commands, []).

run_commands(Module,Commands,Env) ->
    do_run_command(Commands,
                   Env,
                   Module,
                   [],
                   triq_fsm_stub:initial_state(Module)).

do_run_command(Commands, Env, Module, History, State) ->
    case Commands of
        [] ->
            {History, eval(Env,State), ok};

        [{init,S}|Rest] ->
            do_run_command(Rest, Env, Module, History, S);

        [{set, {var,V}=Var, {call,M,F,A}=SymCall}|Rest] ->
            M2=eval(Env,M),
            F2=eval(Env,F),
            A2=eval(Env,A),

  Same as eval(Env ,  ) , but we need to log in History .
            Res = apply(M2,F2,A2),

            SubstCall = {call, M2,F2,A2},
            {Name, _} = State,
            History2 = [{{Name,SubstCall},Res}|History],

            case triq_fsm_stub:postcondition(Module,State,SubstCall,Res) of
                true ->
                    Env2 = [{V,Res}|proplists:delete(V,Env)],
                    State2 = triq_fsm_stub:next_state(Module,State,Var,SymCall),
                    do_run_command(Rest, Env2, Module, History2, State2);

                Other ->
                    {History, eval(Env,State), {postcondition, Other}}
            end
    end.

state_names(H) ->
    [N || {{N,_},_} <- H].

 ex: ts=4 sw=4 et



 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

     -2.0

 Unless required by applicable law or agreed to in writing, software
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.

  -*- erlang - indent - level : 4;indent - tabs - mode : nil -*-
  This file is part of Triq - Trifork QuickCheck
  Copyright ( c ) 2010 - 2013 by 
  Licensed under the Apache License , Version 2.0 ( the " License " ) ;
  distributed under the License is distributed on an " AS IS " BASIS ,
-module(triq_fsm).

-export([commands/1,
         commands/2,
         run_commands/2,
         run_commands/3,
         state_names/1]).
-import(triq_expr,
        [eval/2]).


  FSM API

commands(Module) when is_atom(Module) ->
    triq_statem_fsm:commands(Module).

commands(Module, {InitialName, State}) when is_atom(Module) ->
    triq_statem_fsm:commands(Module, {InitialName, State}).

run_commands(Module, Commands) ->
    run_commands(Module, Commands, []).

run_commands(Module,Commands,Env) ->
    do_run_command(Commands,
                   Env,
                   Module,
                   [],
                   triq_fsm_stub:initial_state(Module)).

do_run_command(Commands, Env, Module, History, State) ->
    case Commands of
        [] ->
            {History, eval(Env,State), ok};

        [{init,S}|Rest] ->
            do_run_command(Rest, Env, Module, History, S);

        [{set, {var,V}=Var, {call,M,F,A}=SymCall}|Rest] ->
            M2=eval(Env,M),
            F2=eval(Env,F),
            A2=eval(Env,A),

  Same as eval(Env ,  ) , but we need to log in History .
            Res = apply(M2,F2,A2),

            SubstCall = {call, M2,F2,A2},
            {Name, _} = State,
            History2 = [{{Name,SubstCall},Res}|History],

            case triq_fsm_stub:postcondition(Module,State,SubstCall,Res) of
                true ->
                    Env2 = [{V,Res}|proplists:delete(V,Env)],
                    State2 = triq_fsm_stub:next_state(Module,State,Var,SymCall),
                    do_run_command(Rest, Env2, Module, History2, State2);

                Other ->
                    {History, eval(Env,State), {postcondition, Other}}
            end
    end.

state_names(H) ->
    [N || {{N,_},_} <- H].
