diff options
Diffstat (limited to 'lib/parsetools/src/yeccparser.erl')
| -rw-r--r-- | lib/parsetools/src/yeccparser.erl | 215 |
1 files changed, 129 insertions, 86 deletions
diff --git a/lib/parsetools/src/yeccparser.erl b/lib/parsetools/src/yeccparser.erl index 415547b4ce..63127802ee 100644 --- a/lib/parsetools/src/yeccparser.erl +++ b/lib/parsetools/src/yeccparser.erl @@ -38,16 +38,16 @@ line_of(Token) -> -type yecc_ret() :: {'error', _} | {'ok', _}. --spec parse(_) -> yecc_ret(). +-spec parse(Tokens :: list()) -> yecc_ret(). parse(Tokens) -> - yeccpars0(Tokens, false). + yeccpars0(Tokens, {no_func, no_line}, 0, [], []). --spec parse_and_scan({function() | {atom(), atom()}, [_]} | {atom(), atom(), [_]}) -> - yecc_ret(). +-spec parse_and_scan({function() | {atom(), atom()}, [_]} + | {atom(), atom(), [_]}) -> yecc_ret(). parse_and_scan({F, A}) -> % Fun or {M, F} - yeccpars0([], {F, A}); + yeccpars0([], {{F, A}, no_line}, 0, [], []); parse_and_scan({M, F, A}) -> - yeccpars0([], {{M, F}, A}). + yeccpars0([], {{{M, F}, A}, no_line}, 0, [], []). -spec format_error(any()) -> [char() | list()]. format_error(Message) -> @@ -60,54 +60,58 @@ format_error(Message) -> %% To be used in grammar files to throw an error message to the parser %% toplevel. Doesn't have to be exported! --compile({nowarn_unused_function,{return_error,2}}). +-compile({nowarn_unused_function, return_error/2}). -spec return_error(integer(), any()) -> no_return(). return_error(Line, Message) -> throw({error, {Line, ?MODULE, Message}}). --define(CODE_VERSION, "1.3"). +-define(CODE_VERSION, "1.4"). -yeccpars0(Tokens, MFA) -> - try yeccpars1(Tokens, MFA, 0, [], []) +yeccpars0(Tokens, Tzr, State, States, Vstack) -> + try yeccpars1(Tokens, Tzr, State, States, Vstack) catch error: Error -> Stacktrace = erlang:get_stacktrace(), try yecc_error_type(Error, Stacktrace) of - {syntax_error, Token} -> - yeccerror(Token); - {missing_in_goto_table=Tag, Symbol, State} -> - Desc = {Symbol, State, Tag}, + Desc -> erlang:raise(error, {yecc_bug, ?CODE_VERSION, Desc}, - Stacktrace) + Stacktrace) catch _:_ -> erlang:raise(error, Error, Stacktrace) end; - throw: {error, {_Line, ?MODULE, _M}} = Error -> - Error % probably from return_error/2 + %% Probably thrown from return_error/2: + throw: {error, {_Line, ?MODULE, _M}} = Error -> + Error end. -yecc_error_type(function_clause, [{?MODULE,F,[State,_,_,_,Token,_,_]} | _]) -> +yecc_error_type(function_clause, [{?MODULE,F,ArityOrArgs} | _]) -> case atom_to_list(F) of - "yeccpars2" ++ _ -> - {syntax_error, Token}; "yeccgoto_" ++ SymbolL -> {ok,[{atom,_,Symbol}],_} = erl_scan:string(SymbolL), - {missing_in_goto_table, Symbol, State} + State = case ArityOrArgs of + [S,_,_,_,_,_,_] -> S; + _ -> state_is_unknown + end, + {Symbol, State, missing_in_goto_table} end. -yeccpars1([Token | Tokens], Tokenizer, State, States, Vstack) -> - yeccpars2(State, element(1, Token), States, Vstack, Token, Tokens, - Tokenizer); -yeccpars1([], {F, A}, State, States, Vstack) -> +yeccpars1([Token | Tokens], Tzr, State, States, Vstack) -> + yeccpars2(State, element(1, Token), States, Vstack, Token, Tokens, Tzr); +yeccpars1([], {{F, A},_Line}, State, States, Vstack) -> case apply(F, A) of - {ok, Tokens, _Endline} -> - yeccpars1(Tokens, {F, A}, State, States, Vstack); - {eof, _Endline} -> - yeccpars1([], false, State, States, Vstack); + {ok, Tokens, Endline} -> + yeccpars1(Tokens, {{F, A}, Endline}, State, States, Vstack); + {eof, Endline} -> + yeccpars1([], {no_func, Endline}, State, States, Vstack); {error, Descriptor, _Endline} -> {error, Descriptor} end; -yeccpars1([], false, State, States, Vstack) -> - yeccpars2(State, '$end', States, Vstack, {'$end', 999999}, [], false). +yeccpars1([], {no_func, no_line}, State, States, Vstack) -> + Line = 999999, + yeccpars2(State, '$end', States, Vstack, yecc_end(Line), [], + {no_func, Line}); +yeccpars1([], {no_func, Endline}, State, States, Vstack) -> + yeccpars2(State, '$end', States, Vstack, yecc_end(Endline), [], + {no_func, Endline}). %% yeccpars1/7 is called from generated code. %% @@ -115,48 +119,73 @@ yeccpars1([], false, State, States, Vstack) -> %% yeccpars1/7 can be found by parsing the file without following %% include directives. yecc will otherwise assume that an old %% yeccpre.hrl is included (one which defines yeccpars1/5). -yeccpars1(State1, State, States, Vstack, Stack1, [Token | Tokens], - Tokenizer) -> +yeccpars1(State1, State, States, Vstack, Token0, [Token | Tokens], Tzr) -> yeccpars2(State, element(1, Token), [State1 | States], - [Stack1 | Vstack], Token, Tokens, Tokenizer); -yeccpars1(State1, State, States, Vstack, Stack1, [], {F, A}) -> - case apply(F, A) of - {ok, Tokens, _Endline} -> - yeccpars1(State1, State, States, Vstack, Stack1, Tokens, {F, A}); - {eof, _Endline} -> - yeccpars1(State1, State, States, Vstack, Stack1, [], false); - {error, Descriptor, _Endline} -> - {error, Descriptor} - end; -yeccpars1(State1, State, States, Vstack, Stack1, [], false) -> - yeccpars2(State, '$end', [State1 | States], [Stack1 | Vstack], - {'$end', 999999}, [], false). + [Token0 | Vstack], Token, Tokens, Tzr); +yeccpars1(State1, State, States, Vstack, Token0, [], {{_F,_A}, _Line}=Tzr) -> + yeccpars1([], Tzr, State, [State1 | States], [Token0 | Vstack]); +yeccpars1(State1, State, States, Vstack, Token0, [], {no_func, no_line}) -> + Line = yecctoken_end_location(Token0), + yeccpars2(State, '$end', [State1 | States], [Token0 | Vstack], + yecc_end(Line), [], {no_func, Line}); +yeccpars1(State1, State, States, Vstack, Token0, [], {no_func, Line}) -> + yeccpars2(State, '$end', [State1 | States], [Token0 | Vstack], + yecc_end(Line), [], {no_func, Line}). + +%% For internal use only. +yecc_end({Line,_Column}) -> + {'$end', Line}; +yecc_end(Line) -> + {'$end', Line}. + +yecctoken_end_location(Token) -> + try + {text, Str} = erl_scan:token_info(Token, text), + {line, Line} = erl_scan:token_info(Token, line), + Parts = re:split(Str, "\n"), + Dline = length(Parts) - 1, + Yline = Line + Dline, + case erl_scan:token_info(Token, column) of + {column, Column} -> + Col = byte_size(lists:last(Parts)), + {Yline, Col + if Dline =:= 0 -> Column; true -> 1 end}; + undefined -> + Yline + end + catch _:_ -> + yecctoken_location(Token) + end. -% For internal use only. yeccerror(Token) -> - Text = case catch erl_scan:token_info(Token, text) of - {text, Txt} -> Txt; - _ -> yecctoken2string(Token) - end, - Location = case catch erl_scan:token_info(Token, location) of - {location, Loc} -> Loc; - _ -> element(2, Token) - end, + Text = yecctoken_to_string(Token), + Location = yecctoken_location(Token), {error, {Location, ?MODULE, ["syntax error before: ", Text]}}. +yecctoken_to_string(Token) -> + case catch erl_scan:token_info(Token, text) of + {text, Txt} -> Txt; + _ -> yecctoken2string(Token) + end. + +yecctoken_location(Token) -> + case catch erl_scan:token_info(Token, location) of + {location, Loc} -> Loc; + _ -> element(2, Token) + end. + yecctoken2string({atom, _, A}) -> io_lib:write(A); yecctoken2string({integer,_,N}) -> io_lib:write(N); yecctoken2string({float,_,F}) -> io_lib:write(F); yecctoken2string({char,_,C}) -> io_lib:write_char(C); yecctoken2string({var,_,V}) -> io_lib:format("~s", [V]); yecctoken2string({string,_,S}) -> io_lib:write_unicode_string(S); -yecctoken2string({reserved_symbol, _, A}) -> io_lib:format("~w", [A]); -yecctoken2string({_Cat, _, Val}) -> io_lib:format("~w", [Val]); +yecctoken2string({reserved_symbol, _, A}) -> io_lib:write(A); +yecctoken2string({_Cat, _, Val}) -> io_lib:write(Val); yecctoken2string({dot, _}) -> "'.'"; yecctoken2string({'$end', _}) -> []; yecctoken2string({Other, _}) when is_atom(Other) -> - io_lib:format("~w", [Other]); + io_lib:write(Other); yecctoken2string(Other) -> io_lib:write(Other). @@ -164,7 +193,7 @@ yecctoken2string(Other) -> --file("yeccparser.erl", 168). +-file("yeccparser.erl", 196). yeccpars2(0=S, Cat, Ss, Stack, T, Ts, Tzr) -> yeccpars2_0(S, Cat, Ss, Stack, T, Ts, Tzr); @@ -248,7 +277,9 @@ yeccpars2_0(S, integer, Ss, Stack, T, Ts, Tzr) -> yeccpars2_0(S, reserved_word, Ss, Stack, T, Ts, Tzr) -> yeccpars1(S, 8, Ss, Stack, T, Ts, Tzr); yeccpars2_0(S, var, Ss, Stack, T, Ts, Tzr) -> - yeccpars1(S, 9, Ss, Stack, T, Ts, Tzr). + yeccpars1(S, 9, Ss, Stack, T, Ts, Tzr); +yeccpars2_0(_, _, _, _, T, _, _) -> + yeccerror(T). yeccpars2_1(S, atom, Ss, Stack, T, Ts, Tzr) -> yeccpars1(S, 6, Ss, Stack, T, Ts, Tzr); @@ -267,10 +298,14 @@ yeccpars2_2(_S, Cat, Ss, Stack, T, Ts, Tzr) -> yeccgoto_grammar(hd(Ss), Cat, Ss, Stack, T, Ts, Tzr). yeccpars2_3(S, '->', Ss, Stack, T, Ts, Tzr) -> - yeccpars1(S, 10, Ss, Stack, T, Ts, Tzr). + yeccpars1(S, 10, Ss, Stack, T, Ts, Tzr); +yeccpars2_3(_, _, _, _, T, _, _) -> + yeccerror(T). -yeccpars2_4(_S, '$end', _Ss, Stack, _T, _Ts, _Tzr) -> - {ok, hd(Stack)}. +yeccpars2_4(_S, '$end', _Ss, Stack, _T, _Ts, _Tzr) -> + {ok, hd(Stack)}; +yeccpars2_4(_, _, _, _, T, _, _) -> + yeccerror(T). yeccpars2_5(_S, Cat, Ss, Stack, T, Ts, Tzr) -> yeccgoto_grammar(hd(Ss), Cat, Ss, Stack, T, Ts, Tzr). @@ -317,7 +352,9 @@ yeccpars2_13(_S, Cat, Ss, Stack, T, Ts, Tzr) -> yeccgoto_symbols(hd(Nss), Cat, Nss, NewStack, T, Ts, Tzr). yeccpars2_14(S, dot, Ss, Stack, T, Ts, Tzr) -> - yeccpars1(S, 29, Ss, Stack, T, Ts, Tzr). + yeccpars1(S, 29, Ss, Stack, T, Ts, Tzr); +yeccpars2_14(_, _, _, _, T, _, _) -> + yeccerror(T). yeccpars2_15(S, '->', Ss, Stack, T, Ts, Tzr) -> yeccpars1(S, 18, Ss, Stack, T, Ts, Tzr); @@ -338,7 +375,9 @@ yeccpars2_15(S, reserved_word, Ss, Stack, T, Ts, Tzr) -> yeccpars2_15(S, string, Ss, Stack, T, Ts, Tzr) -> yeccpars1(S, 26, Ss, Stack, T, Ts, Tzr); yeccpars2_15(S, var, Ss, Stack, T, Ts, Tzr) -> - yeccpars1(S, 27, Ss, Stack, T, Ts, Tzr). + yeccpars1(S, 27, Ss, Stack, T, Ts, Tzr); +yeccpars2_15(_, _, _, _, T, _, _) -> + yeccerror(T). yeccpars2_16(_S, Cat, Ss, Stack, T, Ts, Tzr) -> [_|Nss] = Ss, @@ -414,10 +453,14 @@ yeccpars2_29(_S, Cat, Ss, Stack, T, Ts, Tzr) -> yeccgoto_rule(hd(Nss), Cat, Nss, NewStack, T, Ts, Tzr). yeccpars2_30(S, dot, Ss, Stack, T, Ts, Tzr) -> - yeccpars1(S, 35, Ss, Stack, T, Ts, Tzr). + yeccpars1(S, 35, Ss, Stack, T, Ts, Tzr); +yeccpars2_30(_, _, _, _, T, _, _) -> + yeccerror(T). yeccpars2_31(S, dot, Ss, Stack, T, Ts, Tzr) -> - yeccpars1(S, 34, Ss, Stack, T, Ts, Tzr). + yeccpars1(S, 34, Ss, Stack, T, Ts, Tzr); +yeccpars2_31(_, _, _, _, T, _, _) -> + yeccerror(T). yeccpars2_32(S, string, Ss, Stack, T, Ts, Tzr) -> yeccpars1(S, 32, Ss, Stack, T, Ts, Tzr); @@ -486,7 +529,7 @@ yeccgoto_tokens(15=_S, Cat, Ss, Stack, T, Ts, Tzr) -> yeccgoto_tokens(17=_S, Cat, Ss, Stack, T, Ts, Tzr) -> yeccpars2_28(_S, Cat, Ss, Stack, T, Ts, Tzr). --compile({inline,{yeccpars2_6_,1}}). +-compile({inline,yeccpars2_6_/1}). -file("yeccgramm.yrl", 44). yeccpars2_6_(__Stack0) -> [__1 | __Stack] = __Stack0, @@ -494,7 +537,7 @@ yeccpars2_6_(__Stack0) -> symbol ( __1 ) end | __Stack]. --compile({inline,{yeccpars2_7_,1}}). +-compile({inline,yeccpars2_7_/1}). -file("yeccgramm.yrl", 45). yeccpars2_7_(__Stack0) -> [__1 | __Stack] = __Stack0, @@ -502,7 +545,7 @@ yeccpars2_7_(__Stack0) -> symbol ( __1 ) end | __Stack]. --compile({inline,{yeccpars2_8_,1}}). +-compile({inline,yeccpars2_8_/1}). -file("yeccgramm.yrl", 46). yeccpars2_8_(__Stack0) -> [__1 | __Stack] = __Stack0, @@ -510,7 +553,7 @@ yeccpars2_8_(__Stack0) -> symbol ( __1 ) end | __Stack]. --compile({inline,{yeccpars2_9_,1}}). +-compile({inline,yeccpars2_9_/1}). -file("yeccgramm.yrl", 43). yeccpars2_9_(__Stack0) -> [__1 | __Stack] = __Stack0, @@ -518,14 +561,14 @@ yeccpars2_9_(__Stack0) -> symbol ( __1 ) end | __Stack]. --compile({inline,{yeccpars2_11_,1}}). +-compile({inline,yeccpars2_11_/1}). -file("yeccgramm.yrl", 40). yeccpars2_11_(__Stack0) -> [begin { erlang_code , [ { atom , 0 , '$undefined' } ] } end | __Stack0]. --compile({inline,{yeccpars2_12_,1}}). +-compile({inline,yeccpars2_12_/1}). -file("yeccgramm.yrl", 35). yeccpars2_12_(__Stack0) -> [__1 | __Stack] = __Stack0, @@ -533,7 +576,7 @@ yeccpars2_12_(__Stack0) -> [ __1 ] end | __Stack]. --compile({inline,{yeccpars2_13_,1}}). +-compile({inline,yeccpars2_13_/1}). -file("yeccgramm.yrl", 36). yeccpars2_13_(__Stack0) -> [__2,__1 | __Stack] = __Stack0, @@ -541,7 +584,7 @@ yeccpars2_13_(__Stack0) -> [ __1 | __2 ] end | __Stack]. --compile({inline,{yeccpars2_16_,1}}). +-compile({inline,yeccpars2_16_/1}). -file("yeccgramm.yrl", 39). yeccpars2_16_(__Stack0) -> [__2,__1 | __Stack] = __Stack0, @@ -549,7 +592,7 @@ yeccpars2_16_(__Stack0) -> { erlang_code , __2 } end | __Stack]. --compile({inline,{yeccpars2_17_,1}}). +-compile({inline,yeccpars2_17_/1}). -file("yeccgramm.yrl", 41). yeccpars2_17_(__Stack0) -> [__1 | __Stack] = __Stack0, @@ -557,7 +600,7 @@ yeccpars2_17_(__Stack0) -> [ __1 ] end | __Stack]. --compile({inline,{yeccpars2_18_,1}}). +-compile({inline,yeccpars2_18_/1}). -file("yeccgramm.yrl", 55). yeccpars2_18_(__Stack0) -> [__1 | __Stack] = __Stack0, @@ -565,7 +608,7 @@ yeccpars2_18_(__Stack0) -> { '->' , line_of ( __1 ) } end | __Stack]. --compile({inline,{yeccpars2_19_,1}}). +-compile({inline,yeccpars2_19_/1}). -file("yeccgramm.yrl", 56). yeccpars2_19_(__Stack0) -> [__1 | __Stack] = __Stack0, @@ -573,7 +616,7 @@ yeccpars2_19_(__Stack0) -> { ':' , line_of ( __1 ) } end | __Stack]. --compile({inline,{yeccpars2_24_,1}}). +-compile({inline,yeccpars2_24_/1}). -file("yeccgramm.yrl", 53). yeccpars2_24_(__Stack0) -> [__1 | __Stack] = __Stack0, @@ -581,7 +624,7 @@ yeccpars2_24_(__Stack0) -> { value_of ( __1 ) , line_of ( __1 ) } end | __Stack]. --compile({inline,{yeccpars2_25_,1}}). +-compile({inline,yeccpars2_25_/1}). -file("yeccgramm.yrl", 54). yeccpars2_25_(__Stack0) -> [__1 | __Stack] = __Stack0, @@ -589,7 +632,7 @@ yeccpars2_25_(__Stack0) -> { value_of ( __1 ) , line_of ( __1 ) } end | __Stack]. --compile({inline,{yeccpars2_28_,1}}). +-compile({inline,yeccpars2_28_/1}). -file("yeccgramm.yrl", 42). yeccpars2_28_(__Stack0) -> [__2,__1 | __Stack] = __Stack0, @@ -597,7 +640,7 @@ yeccpars2_28_(__Stack0) -> [ __1 | __2 ] end | __Stack]. --compile({inline,{yeccpars2_29_,1}}). +-compile({inline,yeccpars2_29_/1}). -file("yeccgramm.yrl", 33). yeccpars2_29_(__Stack0) -> [__5,__4,__3,__2,__1 | __Stack] = __Stack0, @@ -605,7 +648,7 @@ yeccpars2_29_(__Stack0) -> { rule , [ __1 | __3 ] , __4 } end | __Stack]. --compile({inline,{yeccpars2_32_,1}}). +-compile({inline,yeccpars2_32_/1}). -file("yeccgramm.yrl", 37). yeccpars2_32_(__Stack0) -> [__1 | __Stack] = __Stack0, @@ -613,7 +656,7 @@ yeccpars2_32_(__Stack0) -> [ __1 ] end | __Stack]. --compile({inline,{yeccpars2_33_,1}}). +-compile({inline,yeccpars2_33_/1}). -file("yeccgramm.yrl", 38). yeccpars2_33_(__Stack0) -> [__2,__1 | __Stack] = __Stack0, @@ -621,7 +664,7 @@ yeccpars2_33_(__Stack0) -> [ __1 | __2 ] end | __Stack]. --compile({inline,{yeccpars2_34_,1}}). +-compile({inline,yeccpars2_34_/1}). -file("yeccgramm.yrl", 32). yeccpars2_34_(__Stack0) -> [__3,__2,__1 | __Stack] = __Stack0, @@ -629,7 +672,7 @@ yeccpars2_34_(__Stack0) -> { __1 , __2 } end | __Stack]. --compile({inline,{yeccpars2_35_,1}}). +-compile({inline,yeccpars2_35_/1}). -file("yeccgramm.yrl", 31). yeccpars2_35_(__Stack0) -> [__3,__2,__1 | __Stack] = __Stack0, |