X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/3112e7a82b61724d5a240a60ffeaee613431f85d..f122444873a1ec499d25ffec5765dcc48dc7b928:/tests/actions.at diff --git a/tests/actions.at b/tests/actions.at index b2d5e9d1..6c1ecbc1 100644 --- a/tests/actions.at +++ b/tests/actions.at @@ -1,6 +1,6 @@ -# Executing Actions. -*- Autotest -*- +e# Executing Actions. -*- Autotest -*- -# Copyright (C) 2001-2012 Free Software Foundation, Inc. +# Copyright (C) 2001-2013 Free Software Foundation, Inc. # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -30,12 +30,12 @@ AT_SETUP([Mid-rule actions]) AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([[input.y]], -[[%error-verbose +[[%define parse.error verbose %debug -%{ +%code { ]AT_YYERROR_DECLARE[ ]AT_YYLEX_DECLARE[ -%} +} %% exp: { putchar ('0'); } '1' { putchar ('1'); } @@ -52,11 +52,7 @@ exp: { putchar ('0'); } %% ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE(["123456789"])[ -int -main (void) -{ - return yyparse (); -} +]AT_MAIN_DEFINE[ ]]) AT_BISON_OPTION_POPDEFS @@ -68,7 +64,297 @@ AT_PARSER_CHECK([./input], 0, AT_CLEANUP +## ----------------------- ## +## Implicitly empty rule. ## +## ----------------------- ## + +AT_SETUP([Implicitly empty rule]) + +AT_DATA_GRAMMAR([[1.y]], +[[%% +exp: a b; +a: /* empty. */ {}; +// A mid-rule action does not count as an empty rule. +b: {} {}; +]]) + +AT_BISON_CHECK([-fcaret -Wempty-rule 1.y], [0], [], +[[1.y:11.17-18: warning: empty rule without %empty [-Wempty-rule] + a: /* empty. */ {}; + ^^ +]]) + +AT_DATA_GRAMMAR([[2.y]], +[[%% +exp: a b c; +a: /* empty. */ {}; +b: %empty {}; +c: /* empty. */ {}; +]]) + +AT_BISON_CHECK([-fcaret 2.y], [0], [], +[[2.y:11.17-18: warning: empty rule without %empty [-Wempty-rule] + a: /* empty. */ {}; + ^^ +2.y:13.17-18: warning: empty rule without %empty [-Wempty-rule] + c: /* empty. */ {}; + ^^ +]]) + +AT_BISON_CHECK([-fcaret -Wno-empty-rule 2.y], [0]) + +AT_CLEANUP + +## ------------------------ ## +## Invalid uses of %empty. ## +## ------------------------ ## + +AT_SETUP([Invalid uses of %empty]) + +AT_DATA_GRAMMAR([[one.y]], +[[%% +exp: + %empty {} %empty +; +]]) + +AT_BISON_CHECK([-fcaret one.y], [1], [], +[[one.y:11.13-18: error: only one %empty allowed per rule + %empty {} %empty + ^^^^^^ +one.y:11.3-8: previous declaration + %empty {} %empty + ^^^^^^ +]]) + +AT_DATA_GRAMMAR([[two.y]], +[[%% +exp: + 'a' %empty {} +| %empty 'a' {} +| %empty {} {} +; +]]) + +AT_BISON_CHECK([-fcaret two.y], [1], [], +[[two.y:11.7-12: error: %empty on non-empty rule + 'a' %empty {} + ^^^^^^ +two.y:12.3-8: error: %empty on non-empty rule + | %empty 'a' {} + ^^^^^^ +two.y:13.3-8: error: %empty on non-empty rule + | %empty {} {} + ^^^^^^ +]]) + +AT_CLEANUP + +## ---------------------- ## +## Valid uses of %empty. ## +## ---------------------- ## + +AT_SETUP([Valid uses of %empty]) + +AT_BISON_OPTION_PUSHDEFS +AT_DATA_GRAMMAR([[input.y]], +[[ +%debug +%code +{ +]AT_YYERROR_DECLARE[ +]AT_YYLEX_DECLARE[ +} +%% +exp: %empty {} +%% +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE[ +]AT_MAIN_DEFINE[ +]]) + +AT_FULL_COMPILE([input]) +AT_PARSER_CHECK([./input]) +AT_BISON_OPTION_POPDEFS +AT_CLEANUP + +## ------------------ ## +## Initial location. ## +## ------------------ ## + +# AT_TEST(SKELETON-NAME, DIRECTIVES, [MORE-DIRECTIVES], [LOCATION = 1.1]) +# ----------------------------------------------------------------------- +# Check that the initial location is correct. +m4_pushdef([AT_TEST], +[AT_SETUP([Initial location: $1 $2]) + +AT_BISON_OPTION_PUSHDEFS([%locations %skeleton "$1" $2]) +AT_DATA_GRAMMAR([[input.y]], +[[%locations +%debug +%skeleton "$1" +]$2[ +]$3[ +%code +{ +# include +# include /* getenv */ +]AT_YYERROR_DECLARE[ +]AT_YYLEX_DECLARE[ +} +%% +exp: { ]AT_SKEL_CC_IF([[std::cerr << @$ << std::endl]], + [[LOCATION_PRINT(stderr, @$); fputc ('\n', stderr)]])[; } +%% +]AT_YYERROR_DEFINE[ + +]AT_YYLEX_PROTOTYPE[ +{]AT_PURE_IF([ + YYUSE(lvalp); + YYUSE(llocp);], [AT_SKEL_CC_IF([ + YYUSE(lvalp); + YYUSE(llocp);])])[ + return 'x'; +} + +int +main (void) +{]AT_SKEL_CC_IF([[ + yy::parser p; + p.set_debug_level (!!getenv("YYDEBUG")); + return p.parse ();]], [[ + yydebug = !!getenv("YYDEBUG"); + return !!yyparse (]AT_PARAM_IF([0])[);]])[ +} +]]) + +AT_FULL_COMPILE([input]) +AT_PARSER_CHECK([./input], 1, [], +[m4_default([$4], [1.1]) +m4_default([$4], [1.1])[: syntax error +]]) +AT_BISON_OPTION_POPDEFS +AT_CLEANUP +]) + +## FIXME: test Java, and iterate over skeletons. +AT_TEST([yacc.c]) +AT_TEST([yacc.c], [%define api.pure full]) +AT_TEST([yacc.c], [%define api.pure %parse-param { int x }]) +AT_TEST([yacc.c], [%define api.push-pull both]) +AT_TEST([yacc.c], [%define api.push-pull both %define api.pure full]) +AT_TEST([glr.c]) +AT_TEST([glr.c], [%define api.pure]) +AT_TEST([lalr1.cc]) +AT_TEST([glr.cc]) + +## A very different test, based on PostgreSQL's implementation of the +## locations. See +## http://lists.gnu.org/archive/html/bug-bison/2012-11/msg00023.html +## +## Weirdly enough, to trigger the warning with GCC 4.7, we must not +## use fprintf, so run the test twice: once to check the warning +## (absence thereof), and another time to check the value. +AT_TEST([yacc.c], [%define api.pure full], +[[%{ +# define YYLTYPE int +# define LOCATION_PRINT(Stream, Loc) \ + (void) (Loc) +# define YYLLOC_DEFAULT(Current, Rhs, N) \ + (Current) = ((Rhs)[N ? 1 : 0]) +%} +]], +[@&t@]) +AT_TEST([yacc.c], [%define api.pure full], +[[%{ +# define YYLTYPE int +# define LOCATION_PRINT(Stream, Loc) \ + fprintf ((Stream), "%d", (Loc)) +# define YYLLOC_DEFAULT(Current, Rhs, N) \ + (Current) = ((Rhs)[N ? 1 : 0]) +%} +]], +[0]) + + +m4_popdef([AT_TEST]) + + + +## ---------------- ## +## Location Print. ## +## ---------------- ## + +# AT_TEST(SKELETON-NAME, DIRECTIVES, [MORE-DIRECTIVES]) +# ----------------------------------------------------- +# Check that the initial location is correct. +m4_pushdef([AT_TEST], +[AT_SETUP([Location print: $1 $2]) + +AT_BISON_OPTION_PUSHDEFS([%locations %skeleton "$1" $2]) +AT_DATA_GRAMMAR([[input.y]], +[[%locations +%debug +%skeleton "$1" +]$2[ +]$3[ +%code +{ +]AT_YYERROR_DECLARE[ +]AT_YYLEX_DECLARE[ +} +%% +exp: %empty; +%% +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE[ + +int +main (void) +{ + ]AT_YYLTYPE[ loc; +]AT_GLR_CC_IF([loc.initialize();])[ +#define TEST(L1, C1, L2, C2) \ + loc.]AT_FIRST_LINE[ = L1; \ + loc.]AT_FIRST_COLUMN[ = C1; \ + loc.]AT_LAST_LINE[ = L2; \ + loc.]AT_LAST_COLUMN[ = C2; \ + ]AT_SKEL_CC_IF([std::cout << loc], + [LOCATION_PRINT(stdout, loc)])[;\ + putchar ('\n'); + + TEST(1, 1, 1, 1); + TEST(2, 1, 2, 10); + TEST(3, 1, 4, 1); + TEST(5, 1, 6, 10); + + TEST(7, 2, 0, 2); + TEST(8, 0, 8, 0); + return 0; +} +]]) + +AT_FULL_COMPILE([input]) +AT_PARSER_CHECK([./input], 0, +[[1.1 +2.1-9 +3.1-4.0 +5.1-6.9 +7.2 +8.0 +]]) +AT_BISON_OPTION_POPDEFS +AT_CLEANUP +]) + +## FIXME: test Java, and iterate over skeletons. +AT_TEST([yacc.c]) +AT_TEST([glr.c]) +AT_TEST([lalr1.cc]) +AT_TEST([glr.cc]) + +m4_popdef([AT_TEST]) @@ -80,13 +366,13 @@ AT_SETUP([Exotic Dollars]) AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([[input.y]], -[[%error-verbose +[[%define parse.error verbose %debug -%{ +%code { ]AT_YYERROR_DECLARE[ ]AT_YYLEX_DECLARE[ # define USE(Var) -%} +} %union { @@ -117,11 +403,7 @@ sum_of_the_five_previous_values: %% ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE[ -int -main (void) -{ - return yyparse (); -} +]AT_MAIN_DEFINE[ ]]) AT_BISON_CHECK([-d -v -o input.c input.y], 0) @@ -136,7 +418,6 @@ AT_PARSER_CHECK([./input], 0, AT_DATA_GRAMMAR([[input.y]], [[ %{ -#include ]AT_YYERROR_DECLARE[ ]AT_YYLEX_DECLARE[ typedef struct { int val; } stype; @@ -152,11 +433,7 @@ sum: { printf ("%d\n", $0.val + $-1.val + $-2.val); } ; %% ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE[ -int -main (void) -{ - return yyparse (); -} +]AT_MAIN_DEFINE[ ]]) AT_FULL_COMPILE([input]) @@ -251,7 +528,7 @@ AT_LALR1_CC_IF([typedef yy::location YYLTYPE;])[ %% /* This grammar is made to exercise error recovery. - "Lines" starting with `(' support error recovery, with + "Lines" starting with '(' support error recovery, with ')' as synchronizing token. Lines starting with 'x' can never be recovered from if in error. */ @@ -263,7 +540,7 @@ input: V(input, $$, @$, ": /* Nothing */\n"); } | line input /* Right recursive to load the stack so that popping at - END can be exercised. */ + END can be exercised. */ { $$ = 2; V(input, $$, @$, ": "); @@ -304,7 +581,7 @@ line: $$ = -1; V(line, $$, @$, ": "); V('(', $1, @1, " "); - fprintf (stderr, "error (@%d-%d) ", RANGE (@2)); + fprintf (stderr, "error (@%d-%d) ", RANGE(@2)); V(')', $3, @3, "\n"); } ; @@ -328,11 +605,11 @@ static { static unsigned int counter = 0; - int c = ]AT_VAL[]m4_ifval([$6], [.ival])[ = counter++; + unsigned int c = ]AT_VAL[]m4_ifval([$6], [.ival])[ = counter++; /* As in BASIC, line numbers go from 10 to 10. */ ]AT_LOC_FIRST_LINE[ = ]AT_LOC_FIRST_COLUMN[ = 10 * c; ]AT_LOC_LAST_LINE[ = ]AT_LOC_LAST_COLUMN[ = ]AT_LOC_FIRST_LINE[ + 9; - assert (0 <= c && c <= strlen (source)); + assert (c <= strlen (source)); if (source[c]) fprintf (stderr, "sending: '%c'", source[c]); else @@ -414,7 +691,7 @@ Successful parse. # Syntax errors caught by the parser # ---------------------------------- -# Exercise the discarding of stack top and input until `error' +# Exercise the discarding of stack top and input until 'error' # can be reduced. # # '(', 'x', 'x', 'x', 'x', 'x', ')', @@ -560,7 +837,7 @@ m4_define([AT_CHECK_PRINTER_AND_DESTRUCTOR], $3 _AT_CHECK_PRINTER_AND_DESTRUCTOR($[1], $[2], $[3], $[4], -[%error-verbose +[%define parse.error verbose %debug %verbose %locations @@ -589,19 +866,17 @@ AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser], [ with union]) # called for $end, and that $$ and @$ work correctly. AT_SETUP([Default tagless %printer and %destructor]) -AT_BISON_OPTION_PUSHDEFS([%locations]) +AT_BISON_OPTION_PUSHDEFS([%locations %debug]) AT_DATA_GRAMMAR([[input.y]], -[[%error-verbose +[[%define parse.error verbose %debug %locations -%{ -# include -# include +%code { ]AT_YYLEX_DECLARE[ ]AT_YYERROR_DECLARE[ # define USE(SYM) -%} +} %printer { fprintf (yyoutput, "<*> printer should not be called.\n"); @@ -632,18 +907,15 @@ start: 'a' 'b' 'c' 'd' 'e' { $$ = 'S'; USE(($1, $2, $3, $4, $5)); } ; %% ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE(["abcd"], [[yylval = res]])[ - -int -main (void) -{ - yydebug = 1; - return yyparse (); -} +]AT_MAIN_DEFINE[ ]]) -AT_BISON_CHECK([-o input.c input.y]) +AT_BISON_CHECK([-o input.c input.y], [], [], +[[input.y:30.3-5: warning: useless %destructor for type <*> [-Wother] +input.y:30.3-5: warning: useless %printer for type <*> [-Wother] +]]) AT_COMPILE([input]) -AT_PARSER_CHECK([./input], 1, +AT_PARSER_CHECK([./input --debug], 1, [[<> destructor for 'd' @ 4. 'b'/'c' destructor for 'c' @ 3. 'b'/'c' destructor for 'b' @ 2. @@ -651,29 +923,29 @@ AT_PARSER_CHECK([./input], 1, ]], [[Starting parse Entering state 0 -Reading a token: Next token is token 'a' (1.1-1.1: <> printer for 'a' @ 1) -Shifting token 'a' (1.1-1.1: <> printer for 'a' @ 1) +Reading a token: Next token is token 'a' (1.1: <> printer for 'a' @ 1) +Shifting token 'a' (1.1: <> printer for 'a' @ 1) Entering state 1 -Reading a token: Next token is token 'b' (1.2-1.2: 'b'/'c' printer for 'b' @ 2) -Shifting token 'b' (1.2-1.2: 'b'/'c' printer for 'b' @ 2) +Reading a token: Next token is token 'b' (1.2: 'b'/'c' printer for 'b' @ 2) +Shifting token 'b' (1.2: 'b'/'c' printer for 'b' @ 2) Entering state 3 -Reading a token: Next token is token 'c' (1.3-1.3: 'b'/'c' printer for 'c' @ 3) -Shifting token 'c' (1.3-1.3: 'b'/'c' printer for 'c' @ 3) +Reading a token: Next token is token 'c' (1.3: 'b'/'c' printer for 'c' @ 3) +Shifting token 'c' (1.3: 'b'/'c' printer for 'c' @ 3) Entering state 5 -Reading a token: Next token is token 'd' (1.4-1.4: <> printer for 'd' @ 4) -Shifting token 'd' (1.4-1.4: <> printer for 'd' @ 4) +Reading a token: Next token is token 'd' (1.4: <> printer for 'd' @ 4) +Shifting token 'd' (1.4: <> printer for 'd' @ 4) Entering state 6 Reading a token: Now at end of input. -1.5-4: syntax error, unexpected $end, expecting 'e' -Error: popping token 'd' (1.4-1.4: <> printer for 'd' @ 4) +1.5: syntax error, unexpected $end, expecting 'e' +Error: popping token 'd' (1.4: <> printer for 'd' @ 4) Stack now 0 1 3 5 -Error: popping token 'c' (1.3-1.3: 'b'/'c' printer for 'c' @ 3) +Error: popping token 'c' (1.3: 'b'/'c' printer for 'c' @ 3) Stack now 0 1 3 -Error: popping token 'b' (1.2-1.2: 'b'/'c' printer for 'b' @ 2) +Error: popping token 'b' (1.2: 'b'/'c' printer for 'b' @ 2) Stack now 0 1 -Error: popping token 'a' (1.1-1.1: <> printer for 'a' @ 1) +Error: popping token 'a' (1.1: <> printer for 'a' @ 1) Stack now 0 -Cleanup: discarding lookahead token $end (1.5-1.5: ) +Cleanup: discarding lookahead token $end (1.5: ) Stack now 0 ]]) @@ -687,14 +959,12 @@ AT_CLEANUP ## ------------------------------------------------------ ## AT_SETUP([Default tagged and per-type %printer and %destructor]) -AT_BISON_OPTION_PUSHDEFS +AT_BISON_OPTION_PUSHDEFS([%debug]) AT_DATA_GRAMMAR([[input.y]], -[[%error-verbose +[[%define parse.error verbose %debug %{ -# include -# include ]AT_YYERROR_DECLARE[ ]AT_YYLEX_DECLARE[ # define USE(SYM) @@ -744,18 +1014,15 @@ start: %% ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE(["abcdef"])[ - -int -main (void) -{ - yydebug = 1; - return yyparse (); -} +]AT_MAIN_DEFINE[ ]]) -AT_BISON_CHECK([-o input.c input.y]) +AT_BISON_CHECK([-o input.c input.y], [], [], +[[input.y:22.3-4: warning: useless %destructor for type <> [-Wother] +input.y:22.3-4: warning: useless %printer for type <> [-Wother] +]]) AT_COMPILE([input]) -AT_PARSER_CHECK([./input], 1, +AT_PARSER_CHECK([./input --debug], 1, [[<*>//e destructor. <*>//e destructor. 'd' destructor. @@ -812,30 +1079,24 @@ AT_CLEANUP AT_SETUP([Default %printer and %destructor for user-defined end token]) -# _AT_CHECK_DEFAULT_PRINTER_AND_DESTRUCTOR_FOR_END_TOKEN(TYPED) -# ------------------------------------------------------------- -m4_define([_AT_CHECK_DEFAULT_PRINTER_AND_DESTRUCTOR_FOR_END_TOKEN], +# AT_TEST(TYPED) +# -------------- +m4_pushdef([AT_TEST], [m4_if($1, 0, [m4_pushdef([kind], []) m4_pushdef([not_kind], [*])], [m4_pushdef([kind], [*]) m4_pushdef([not_kind], [])]) -AT_BISON_OPTION_PUSHDEFS([%locations]) +AT_BISON_OPTION_PUSHDEFS([%locations %debug]) AT_DATA_GRAMMAR([[input]]$1[[.y]], -[[%error-verbose +[[%define parse.error verbose %debug %locations -%initial-action { - @$.first_line = @$.last_line = 1; - @$.first_column = @$.last_column = 1; -} -%{ -# include -# include +%code { ]AT_YYERROR_DECLARE[ ]AT_YYLEX_DECLARE[ # define USE(SYM) -%} +} %destructor { fprintf (yyoutput, "<]]not_kind[[> destructor should not be called.\n"); @@ -863,7 +1124,7 @@ AT_DATA_GRAMMAR([[input]]$1[[.y]], start: { $$ = 'S'; } ; %% - +#include /* abort */ static int yylex (void) { @@ -876,42 +1137,47 @@ yylex (void) return 0; } ]AT_YYERROR_DEFINE[ - -int -main (void) -{ - yydebug = 1; - return yyparse (); -} +]AT_MAIN_DEFINE[ ]]) AT_BISON_OPTION_POPDEFS -AT_BISON_CHECK([-o input$1.c input$1.y]) +AT_BISON_CHECK([-o input$1.c input$1.y], [], [], +[m4_if([$1], [0], +[[input0.y:30.3-5: warning: useless %destructor for type <*> [-Wother] +input0.y:30.3-5: warning: useless %printer for type <*> [-Wother] +]], +[[input1.y:30.3-4: warning: useless %destructor for type <> [-Wother] +input1.y:30.3-4: warning: useless %printer for type <> [-Wother] +]])]) + AT_COMPILE([input$1]) -AT_PARSER_CHECK([./input$1], 0, + +AT_PARSER_CHECK([./input$1 --debug], 0, [[<]]kind[[> for 'E' @ 1. <]]kind[[> for 'S' @ 1. ]], [[Starting parse Entering state 0 -Reducing stack by rule 1 (line 46): --> $$ = nterm start (1.1-1.1: <]]kind[[> for 'S' @ 1) +Reducing stack by rule 1 (line 49): +-> $$ = nterm start (1.1: <]]kind[[> for 'S' @ 1) Stack now 0 Entering state 1 Reading a token: Now at end of input. -Shifting token END (1.1-1.1: <]]kind[[> for 'E' @ 1) +Shifting token END (1.1: <]]kind[[> for 'E' @ 1) Entering state 2 Stack now 0 1 2 -Cleanup: popping token END (1.1-1.1: <]]kind[[> for 'E' @ 1) -Cleanup: popping nterm start (1.1-1.1: <]]kind[[> for 'S' @ 1) +Cleanup: popping token END (1.1: <]]kind[[> for 'E' @ 1) +Cleanup: popping nterm start (1.1: <]]kind[[> for 'S' @ 1) ]]) m4_popdef([kind]) m4_popdef([not_kind]) ]) -_AT_CHECK_DEFAULT_PRINTER_AND_DESTRUCTOR_FOR_END_TOKEN(0) -_AT_CHECK_DEFAULT_PRINTER_AND_DESTRUCTOR_FOR_END_TOKEN(1) +AT_TEST(0) +AT_TEST(1) + +m4_popdef([AT_TEST]) AT_CLEANUP @@ -931,7 +1197,7 @@ AT_SETUP([Default %printer and %destructor are not for error or $undefined]) # semantic value, which would be initialized from the lookahead, which # would be destroyed separately. # - For $undefined, who knows what the semantic value would be. -AT_BISON_OPTION_PUSHDEFS +AT_BISON_OPTION_PUSHDEFS([%debug]) AT_DATA_GRAMMAR([[input.y]], [[%debug @@ -962,18 +1228,16 @@ start: %% ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE(["abd"], [yylval = res])[ -int -main (void) -{ - yydebug = 1; - return yyparse (); -} +]AT_MAIN_DEFINE[ ]]) AT_BISON_OPTION_POPDEFS -AT_BISON_CHECK([-o input.c input.y]) +AT_BISON_CHECK([-o input.c input.y], [], [], +[[input.y:23.6-8: warning: useless %destructor for type <*> [-Wother] +input.y:23.6-8: warning: useless %printer for type <*> [-Wother] +]]) AT_COMPILE([input]) -AT_PARSER_CHECK([./input], [1], [], +AT_PARSER_CHECK([./input --debug], [1], [], [[Starting parse Entering state 0 Reading a token: Next token is token 'a' ('a') @@ -1023,7 +1287,7 @@ AT_SETUP([Default %printer and %destructor are not for $accept]) # - The %printer and %destructor code generated for $accept would always be # dead code because $accept is currently never shifted onto the stack. # - $$ for $accept would always be of type YYSTYPE because it's not possible -# to declare `%type $accept'. (Also true for $undefined.) +# to declare '%type $accept'. (Also true for $undefined.) # - Thus, the compiler might complain that the user code assumes the wrong # type for $$ since the code might assume the type associated with a # specific union field, which is especially reasonable in C++ since that @@ -1031,7 +1295,7 @@ AT_SETUP([Default %printer and %destructor are not for $accept]) # true for $undefined and the error token, so there are three warnings for # %printer and three for %destructor.) -AT_BISON_OPTION_PUSHDEFS +AT_BISON_OPTION_PUSHDEFS([%debug]) AT_DATA_GRAMMAR([[input.y]], [[%debug /* So that %printer is actually compiled. */ @@ -1062,15 +1326,14 @@ start: { USE($$); } ; %% ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE[ -int -main (void) -{ - return yyparse (); -} +]AT_MAIN_DEFINE[ ]]) AT_BISON_OPTION_POPDEFS -AT_BISON_CHECK([-o input.c input.y]) +AT_BISON_CHECK([-o input.c input.y], [], [], +[[input.y:24.3-4: warning: useless %destructor for type <> [-Wother] +input.y:24.3-4: warning: useless %printer for type <> [-Wother] +]]) AT_COMPILE([input]) AT_CLEANUP @@ -1083,19 +1346,17 @@ AT_CLEANUP AT_SETUP([Default %printer and %destructor for mid-rule values]) -AT_BISON_OPTION_PUSHDEFS +AT_BISON_OPTION_PUSHDEFS([%debug]) AT_DATA_GRAMMAR([[input.y]], [[%debug /* So that %printer is actually compiled. */ %{ -# include -# include ]AT_YYERROR_DECLARE[ ]AT_YYLEX_DECLARE[ # define USE(SYM) # define YYLTYPE int # define YYLLOC_DEFAULT(Current, Rhs, N) (void)(Rhs) -# define YY_LOCATION_PRINT(File, Loc) +# define LOCATION_PRINT(File, Loc) %} %printer { fprintf (yyoutput, "%d", @$); } <> @@ -1117,22 +1378,34 @@ start: %% ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE[ -int -main (void) -{ - yydebug = 1; - return yyparse (); -} +]AT_MAIN_DEFINE[ ]]) AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([-o input.c input.y], 0,, -[[input.y:33.3-23: warning: unset value: $$ -input.y:30.3-35.37: warning: unused value: $3 +[[input.y:24.70-72: warning: useless %destructor for type <*> [-Wother] +input.y:24.70-72: warning: useless %printer for type <*> [-Wother] +input.y:33.3-23: warning: unset value: $$ [-Wother] +input.y:32.3-23: warning: unused value: $3 [-Wother] +]]) + +AT_BISON_CHECK([-fcaret -o input.c input.y], 0,, +[[input.y:24.70-72: warning: useless %destructor for type <*> [-Wother] + %printer { fprintf (yyoutput, "<*> printer should not be called"); } <*> + ^^^ +input.y:24.70-72: warning: useless %printer for type <*> [-Wother] + %printer { fprintf (yyoutput, "<*> printer should not be called"); } <*> + ^^^ +input.y:33.3-23: warning: unset value: $$ [-Wother] + { @$ = 4; } // Only used. + ^^^^^^^^^^^^^^^^^^^^^ +input.y:32.3-23: warning: unused value: $3 [-Wother] + { USE ($$); @$ = 3; } // Only set. + ^^^^^^^^^^^^^^^^^^^^^ ]]) AT_COMPILE([input]) -AT_PARSER_CHECK([./input], 1,, +AT_PARSER_CHECK([./input --debug], 1,, [[Starting parse Entering state 0 Reducing stack by rule 1 (line 30): @@ -1181,7 +1454,7 @@ AT_CLEANUP # ------------------------------------------- m4_define([AT_CHECK_ACTION_LOCATIONS], [AT_SETUP([[@$ in ]$1[ implies %locations]]) -AT_BISON_OPTION_PUSHDEFS +AT_BISON_OPTION_PUSHDEFS([%debug]) AT_DATA_GRAMMAR([[input.y]], [[%code { #include @@ -1208,11 +1481,7 @@ yylex (void) } ]AT_YYERROR_DEFINE[ -int -main (void) -{ - return yyparse (); -} +]AT_MAIN_DEFINE[ ]]) AT_BISON_CHECK([[-o input.c input.y]]) @@ -1229,8 +1498,9 @@ AT_CHECK_ACTION_LOCATIONS([[%printer]]) ## Qualified $$ in actions. ## ## ------------------------- ## -# Check that we can used qualified $$ (v.g., $$) not only in -# rule actions, but also where $$ is valid: %printer and %destructor. +# Check that we can use qualified $$ (v.g., $$) not only in rule +# actions, but also where $$ is valid: %destructor/%printer and +# %initial-action. # # FIXME: Not actually checking %destructor, but it's the same code as # %printer... @@ -1243,12 +1513,10 @@ AT_CHECK_ACTION_LOCATIONS([[%printer]]) m4_pushdef([AT_TEST], [AT_SETUP([[Qualified $$ in actions: $1]]) -AT_BISON_OPTION_PUSHDEFS([%locations %skeleton "$1"]) +AT_BISON_OPTION_PUSHDEFS([%skeleton "$1" %debug]) AT_DATA_GRAMMAR([[input.y]], [[%skeleton "$1" -%defines // FIXME: Mandated by lalr1.cc in Bison 2.6. -%locations // FIXME: Mandated by lalr1.cc in Bison 2.6. %debug %code requires { @@ -1290,17 +1558,6 @@ AT_DATA_GRAMMAR([[input.y]], %printer { report (yyo, $$, $$ ); } ; %printer { report (yyo, $$, $$); } <>; -]AT_SKEL_CC_IF([[ -/* The lalr1.cc skeleton, for backward compatibility, defines - a constructor for position that initializes the filename. The - glr.cc skeleton does not (and in fact cannot: location/position - are stored in a union, from which objects with constructors are - excluded in C++). */ -%initial-action { - @$.initialize (); -} -]])[ - %initial-action { $$ = 42; @@ -1320,25 +1577,14 @@ float: UNTYPED INT EOF}]], [[{UNTYPED, INT, EOF}]]), [AT_VAL.ival = toknum * 10; AT_VAL.fval = toknum / 10.0;])[ -int -main (void) -{]AT_SKEL_CC_IF([[ - yy::parser p; - p.set_debug_level(1); - return p.parse ();]], [[ - yydebug = 1; - return yyparse ();]])[ -} +]AT_MAIN_DEFINE[ ]]) AT_FULL_COMPILE([[input]]) -AT_PARSER_CHECK([./input], 0, [], [stderr]) +AT_PARSER_CHECK([./input --debug], 0, [], [stderr]) # Don't be too picky on the traces, GLR is not exactly the same. Keep # only the lines from the printer. -# -# Don't care about locations. FIXME: remove their removal when Bison -# supports C++ without locations. -AT_CHECK([[sed -ne 's/([-0-9.]*: /(/;/ival:/p' stderr]], 0, +AT_CHECK([[sed -ne '/ival:/p' stderr]], 0, [[Reading a token: Next token is token UNTYPED (ival: 10, fval: 0.1) Shifting token UNTYPED (ival: 10, fval: 0.1) Reading a token: Next token is token INT (ival: 20, fval: 0.2) @@ -1361,115 +1607,6 @@ AT_TEST([glr.cc]) m4_popdef([AT_TEST]) -## ----------------------------------------------- ## -## Fix user actions without a trailing semicolon. ## -## ----------------------------------------------- ## - -AT_SETUP([[Fix user actions without a trailing semicolon]]) - -# This feature is undocumented, but we accidentally broke it in 2.3a, -# and there was a complaint at: -# . -AT_BISON_OPTION_PUSHDEFS -AT_DATA([input.y], -[[%% -start: test2 test1 test0 testc; - -test2 -: 'a' { semi; /* TEST:N:2 */ } -| 'b' { if (0) {no_semi} /* TEST:N:2 */ } -| 'c' { if (0) {semi;} /* TEST:N:2 */ } -| 'd' { semi; no_semi /* TEST:Y:2 */ } -| 'e' { semi(); no_semi() /* TEST:Y:2 */ } -| 'f' { semi[]; no_semi[] /* TEST:Y:2 */ } -| 'g' { semi++; no_semi++ /* TEST:Y:2 */ } -| 'h' { {no_semi} no_semi /* TEST:Y:2 */ } -| 'i' { {semi;} no_semi /* TEST:Y:2 */ } -; -test1 - : 'a' { semi; // TEST:N:1 ; -} | 'b' { if (0) {no_semi} // TEST:N:1 ; -} | 'c' { if (0) {semi;} // TEST:N:1 ; -} | 'd' { semi; no_semi // TEST:Y:1 ; -} | 'e' { semi(); no_semi() // TEST:Y:1 ; -} | 'f' { semi[]; no_semi[] // TEST:Y:1 ; -} | 'g' { semi++; no_semi++ // TEST:Y:1 ; -} | 'h' { {no_semi} no_semi // TEST:Y:1 ; -} | 'i' { {semi;} no_semi // TEST:Y:1 ; -} ; -test0 - : 'a' { semi; // TEST:N:1 {} -} | 'b' { if (0) {no_semi} // TEST:N:1 {} -} | 'c' { if (0) {semi;} // TEST:N:1 {} -} | 'd' { semi; no_semi // TEST:Y:1 {} -} | 'e' { semi(); no_semi() // TEST:Y:1 {} -} | 'f' { semi[]; no_semi[] // TEST:Y:1 {} -} | 'g' { semi++; no_semi++ // TEST:Y:1 {} -} | 'h' { {no_semi} no_semi // TEST:Y:1 {} -} | 'i' { {semi;} no_semi // TEST:Y:1 {} -} ; - -testc -: 'a' { -#define TEST_MACRO_N \ -[]"broken\" $ @ $$ @$ [];\ -string;"} -| 'b' { -no_semi -#define TEST_MACRO_N \ -[]"broken\" $ @ $$ @$ [];\ -string;"} -]]) -AT_BISON_OPTION_POPDEFS - -AT_BISON_CHECK([[-o input.c input.y]], [0], [], -[[input.y:8.48: warning: a ';' might be needed at the end of action code -input.y:8.48: warning: future versions of Bison will not add the ';' -input.y:9.48: warning: a ';' might be needed at the end of action code -input.y:9.48: warning: future versions of Bison will not add the ';' -input.y:10.48: warning: a ';' might be needed at the end of action code -input.y:10.48: warning: future versions of Bison will not add the ';' -input.y:11.48: warning: a ';' might be needed at the end of action code -input.y:11.48: warning: future versions of Bison will not add the ';' -input.y:12.48: warning: a ';' might be needed at the end of action code -input.y:12.48: warning: future versions of Bison will not add the ';' -input.y:13.48: warning: a ';' might be needed at the end of action code -input.y:13.48: warning: future versions of Bison will not add the ';' -input.y:20.1: warning: a ';' might be needed at the end of action code -input.y:20.1: warning: future versions of Bison will not add the ';' -input.y:21.1: warning: a ';' might be needed at the end of action code -input.y:21.1: warning: future versions of Bison will not add the ';' -input.y:22.1: warning: a ';' might be needed at the end of action code -input.y:22.1: warning: future versions of Bison will not add the ';' -input.y:23.1: warning: a ';' might be needed at the end of action code -input.y:23.1: warning: future versions of Bison will not add the ';' -input.y:24.1: warning: a ';' might be needed at the end of action code -input.y:24.1: warning: future versions of Bison will not add the ';' -input.y:25.1: warning: a ';' might be needed at the end of action code -input.y:25.1: warning: future versions of Bison will not add the ';' -input.y:31.1: warning: a ';' might be needed at the end of action code -input.y:31.1: warning: future versions of Bison will not add the ';' -input.y:32.1: warning: a ';' might be needed at the end of action code -input.y:32.1: warning: future versions of Bison will not add the ';' -input.y:33.1: warning: a ';' might be needed at the end of action code -input.y:33.1: warning: future versions of Bison will not add the ';' -input.y:34.1: warning: a ';' might be needed at the end of action code -input.y:34.1: warning: future versions of Bison will not add the ';' -input.y:35.1: warning: a ';' might be needed at the end of action code -input.y:35.1: warning: future versions of Bison will not add the ';' -input.y:36.1: warning: a ';' might be needed at the end of action code -input.y:36.1: warning: future versions of Bison will not add the ';' -]]) - -AT_MATCHES_CHECK([input.c], [[/\* TEST:N:2 \*/ \}$]], [[3]]) -AT_MATCHES_CHECK([input.c], [[/\* TEST:Y:2 \*/ ;\}$]], [[6]]) -AT_MATCHES_CHECK([input.c], [[// TEST:N:1 [;{}]*\n\}$]], [[6]]) -AT_MATCHES_CHECK([input.c], [[// TEST:Y:1 [;{}]*\n;\}$]], [[12]]) -AT_MATCHES_CHECK([input.c], [[#define TEST_MACRO_N \\\n\[\]"broken\\" \$ \@ \$\$ \@\$ \[\];\\\nstring;"\}]], [[2]]) - -AT_CLEANUP - - ## -------------------------------------------------- ## ## Destroying lookahead assigned by semantic action. ## ## -------------------------------------------------- ## @@ -1504,7 +1641,7 @@ AT_DATA_GRAMMAR([input.y], // that has set yychar might not always return normally. Instead, // skeletons must translate before every use of yytoken. start: 'a' accept { USE($1); } ; -accept: /*empty*/ { +accept: %empty { assert (yychar == YYEMPTY); yychar = 'b'; YYACCEPT; @@ -1513,11 +1650,7 @@ accept: /*empty*/ { %% ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE(["a"])[ -int -main (void) -{ - return yyparse (); -} +]AT_MAIN_DEFINE[ ]]) AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o input.c input.y]]) @@ -1535,7 +1668,7 @@ AT_CLEANUP AT_SETUP([[YYBACKUP]]) -AT_BISON_OPTION_PUSHDEFS([%pure-parser]) +AT_BISON_OPTION_PUSHDEFS([%pure-parser %debug]) AT_DATA_GRAMMAR([input.y], [[ @@ -1564,13 +1697,7 @@ exp: %% ]AT_YYERROR_DEFINE[ ]AT_YYLEX_DEFINE(["bcd"], [*lvalp = (toknum + 1) * 10])[ - -int -main (void) -{ - yydebug = !!getenv("YYDEBUG"); - return yyparse (); -} +]AT_MAIN_DEFINE[ ]]) AT_BISON_OPTION_POPDEFS