diff options
Diffstat (limited to 'system/doc/design_principles')
| -rw-r--r-- | system/doc/design_principles/statem.xml | 47 |
1 files changed, 22 insertions, 25 deletions
diff --git a/system/doc/design_principles/statem.xml b/system/doc/design_principles/statem.xml index 80ee9c992f..16a901b3a5 100644 --- a/system/doc/design_principles/statem.xml +++ b/system/doc/design_principles/statem.xml @@ -956,14 +956,14 @@ callback_mode() -> <seealso marker="stdlib:gen_statem#cast/2"><c>gen_statem:cast/2</c></seealso>: </p> <code type="erl"><![CDATA[ -button(Digit) -> - gen_statem:cast(?NAME, {button,Digit}). +button(Button) -> + gen_statem:cast(?NAME, {button,Button}). ]]></code> <p> The first argument is the name of the <c>gen_statem</c> and must agree with the name used to start it. So, we use the same macro <c>?NAME</c> as when starting. - <c>{button,Digit}</c> is the event content. + <c>{button,Button}</c> is the event content. </p> <p> The event is sent to the <c>gen_statem</c>. @@ -1171,7 +1171,7 @@ open(...) -> ... ; callback_mode() -> handle_event_function. -handle_event(cast, {button,Digit}, State, #{code := Code} = Data) -> +handle_event(cast, {button,Button}, State, #{code := Code} = Data) -> case State of locked -> #{length := Length, buttons := Buttons} = Data, @@ -1305,7 +1305,7 @@ stop() -> locked(timeout, _, Data) -> {next_state, locked, Data#{buttons := []}}; locked( - cast, {button,Digit}, + cast, {button,Button}, #{code := Code, length := Length, buttons := Buttons} = Data) -> ... true -> % Incomplete | Incorrect @@ -1364,7 +1364,7 @@ locked( <code type="erl"><![CDATA[ ... locked( - cast, {button,Digit}, + cast, {button,Button}, #{code := Code, length := Length, buttons := Buttons} = Data) -> ... if @@ -1421,7 +1421,7 @@ open(cast, {button,_}, Data) -> <code type="erl"><![CDATA[ ... locked( - cast, {button,Digit}, + cast, {button,Button}, #{code := Code, length := Length, buttons := Buttons} = Data) -> ... if @@ -1662,7 +1662,7 @@ locked(enter, _OldState, Data) -> do_lock(), {keep_state,Data#{buttons => []}}; locked( - cast, {button,Digit}, + cast, {button,Button}, #{code := Code, length := Length, buttons := Buttons} = Data) -> ... if @@ -1747,7 +1747,7 @@ open(state_timeout, lock, Data) -> </p> <code type="erl"><![CDATA[ ... --export(down/1, up/1). +-export([down/1, up/1]). ... down(Button) -> gen_statem:cast(?NAME, {down,Button}). @@ -1759,15 +1759,15 @@ up(Button) -> locked(enter, _OldState, Data) -> do_lock(), - {keep_state,Data#{remaining => Code, buf => []}}; + {keep_state,Data#{buttons => []}}; locked( - internal, {button,Digit}, + internal, {button,Button}, #{code := Code, length := Length, buttons := Buttons} = Data) -> ... ]]></code> <code type="erl"><![CDATA[ handle_common(cast, {down,Button}, Data) -> - {keep_state, Data#{button := Button}}; + {keep_state, Data#{button => Button}}; handle_common(cast, {up,Button}, Data) -> case Data of #{button := Button} -> @@ -1833,10 +1833,10 @@ start_link(Code) -> stop() -> gen_statem:stop(?NAME). -down(Digit) -> - gen_statem:cast(?NAME, {down,Digit}). -up(Digit) -> - gen_statem:cast(?NAME, {up,Digit}). +down(Button) -> + gen_statem:cast(?NAME, {down,Button}). +up(Button) -> + gen_statem:cast(?NAME, {up,Button}). code_length() -> gen_statem:call(?NAME, code_length). ]]></code> @@ -1873,7 +1873,7 @@ locked(enter, _OldState, Data) -> locked(state_timeout, button, Data) -> {keep_state, Data#{buttons := []}}; locked( - internal, {button,Digit}, + internal, {button,Button}, #{code := Code, length := Length, buttons := Buttons} = Data) -> NewButtons = if @@ -1884,7 +1884,6 @@ locked( end ++ [Button], if NewButtons =:= Code -> % Correct - do_unlock(), {next_state, open, Data}; true -> % Incomplete | Incorrect {keep_state, Data#{buttons := NewButtons}, @@ -1940,7 +1939,7 @@ handle_event(enter, _OldState, locked, Data) -> handle_event(state_timeout, button, locked, Data) -> {keep_state, Data#{buttons := []}}; handle_event( - internal, {button,Digit}, locked, + internal, {button,Button}, locked, #{code := Code, length := Length, buttons := Buttons} = Data) -> NewButtons = if @@ -1951,7 +1950,6 @@ handle_event( end ++ [Button], if NewButtons =:= Code -> % Correct - do_unlock(), {next_state, open, Data}; true -> % Incomplete | Incorrect {keep_state, Data#{buttons := NewButtons}, @@ -2152,7 +2150,7 @@ handle_event(enter, _OldState, {locked,_}, Data) -> handle_event(state_timeout, button, {locked,_}, Data) -> {keep_state, Data#{buttons := []}}; handle_event( - cast, {button,Digit}, {locked,LockButton}, + cast, {button,Button}, {locked,LockButton}, #{code := Code, length := Length, buttons := Buttons} = Data) -> NewButtons = if @@ -2163,7 +2161,6 @@ handle_event( end ++ [Button], if NewButtons =:= Code -> % Correct - do_unlock(), {next_state, {open,LockButton}, Data}; true -> % Incomplete | Incorrect {keep_state, Data#{buttons := NewButtons}, @@ -2177,11 +2174,11 @@ handle_event(enter, _OldState, {open,_}, _Data) -> do_unlock(), {keep_state_and_data, [{state_timeout,10000,lock}]}; % Time in milliseconds -handle_event(state_timeout, lock, {open,_}, Data) -> - {next_state, locked, Data}; +handle_event(state_timeout, lock, {open,LockButton}, Data) -> + {next_state, {locked,LockButton}, Data}; handle_event(cast, {button,LockButton}, {open,LockButton}, Data) -> {next_state, {locked,LockButton}, Data}; -handle_event(cast, {button,_}, {open,_}, Data) -> +handle_event(cast, {button,_}, {open,_}, _Data) -> {keep_state_and_data,[postpone]}; ]]></code> <code type="erl"><![CDATA[ |