X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/ac700aa646de0ea6b4d07af24ff6ca67e529486a..451364edb17dae7d19301a494f8be7dad67287d2:/tests/actions.at diff --git a/tests/actions.at b/tests/actions.at index 1e8d62f4..2ffaffb2 100644 --- a/tests/actions.at +++ b/tests/actions.at @@ -82,151 +82,6 @@ AT_CLEANUP -## ---------------------- ## -## Actions after errors. ## -## ---------------------- ## - -AT_SETUP([Actions after errors]) - - - -AT_DATA_GRAMMAR([[input.y]], -[[%{ -#include -#include - -static int yylex (void); -static void yyerror (char const *); - -#define YYDEBUG 1 -%} -%union { int ival; } -%type 'x' ';' thing line input - -%% -input: - /* Nothing. */ - { - $$ = 0; - printf ("input (%d): /* Nothing */\n", $$); - } -| line input /* Right recursive to load the stack so that popping at - EOF can be exercised. */ - { - $$ = 2; - printf ("input (%d): line (%d) input (%d)\n", $$, $1, $2); - } -; - -line: - thing thing thing ';' - { - $$ = $1; - printf ("line (%d): thing (%d) thing (%d) thing (%d) ';' (%d)\n", - $$, $1, $2, $3, $4); - } -| thing thing ';' - { - $$ = $1; - printf ("line (%d): thing (%d) thing (%d) ';' (%d)\n", $$, $1, $2, $3); - } -| thing ';' - { - $$ = $1; - printf ("line (%d): thing (%d) ';' (%d)\n", $$, $1, $2); - } -| error ';' - { - $$ = -1; - printf ("line (%d): error ';' (%d)\n", $$, $2); - } -; - -thing: - 'x' - { - $$ = $1; - printf ("thing (%d): 'x' (%d)\n", $$, $1); - } -; -%% -static size_t counter; - -static int -yylex (void) -{ - static char const input[] = - { - /* Exercise the discarding of stack top and input until `error' - can be reduced. */ - 'x', 'x', 'x', 'x', 'x', 'x', ';', - - /* Load the stack and provoke an error that cannot be caught by - the grammar, to check that the stack is cleared. */ - 'x', 'x', ';', - 'x', ';', - 'y' - }; - - if (counter < sizeof input) - { - yylval.ival = counter; - printf ("sending: '%c' (%d)\n", input[counter], yylval.ival); - return input[counter++]; - } - else - { - printf ("sending: EOF\n"); - return EOF; - } -} - -static void -yyerror (char const *msg) -{ - printf ("%lu: %s\n", (unsigned long int) counter, msg); -} - -int -main (void) -{ - yydebug = !!getenv ("YYDEBUG"); - return yyparse (); -} -]]) - -AT_CHECK([bison -o input.c input.y]) -AT_COMPILE([input]) -AT_PARSER_CHECK([./input], 1, -[[sending: 'x' (0) -thing (0): 'x' (0) -sending: 'x' (1) -thing (1): 'x' (1) -sending: 'x' (2) -thing (2): 'x' (2) -sending: 'x' (3) -4: syntax error -sending: 'x' (4) -sending: 'x' (5) -sending: ';' (6) -line (-1): error ';' (6) -sending: 'x' (7) -thing (7): 'x' (7) -sending: 'x' (8) -thing (8): 'x' (8) -sending: ';' (9) -line (7): thing (7) thing (8) ';' (9) -sending: 'x' (10) -thing (10): 'x' (10) -sending: ';' (11) -line (10): thing (10) ';' (11) -sending: 'y' (12) -13: syntax error -sending: EOF -]]) - -AT_CLEANUP - ## ---------------- ## @@ -307,43 +162,44 @@ AT_CLEANUP # _AT_CHECK_PRINTER_AND_DESTRUCTOR($1, $2, $3, $4, BISON-DIRECTIVE, UNION-FLAG) # ----------------------------------------------------------------------------- m4_define([_AT_CHECK_PRINTER_AND_DESTRUCTOR], -[m4_if([$1$2$3], $[1]$[2]$[3], [], +[# Make sure complex $n work. +m4_if([$1$2$3], $[1]$[2]$[3], [], [m4_fatal([$0: Invalid arguments: $@])])dnl -AT_SETUP([Printers and Destructors $6: $5]) - -# Make sure complex $n work. - +# Be sure to pass all the %directives to this macro to have correct +# helping macros. So don't put any directly in the Bison file. AT_BISON_OPTION_PUSHDEFS([$5]) AT_DATA_GRAMMAR([[input.y]], -[[$5 -%{ +[[%{ #include #include +#include ]AT_LALR1_CC_IF( [#define RANGE(Location) (Location).begin.line, (Location).end.line], [#define RANGE(Location) (Location).first_line, (Location).last_line]) [%} -%error-verbose -%debug -%verbose -%locations -]m4_ifval([$6], [%union + +$5] +m4_ifval([$6], [%union { int ival; }]) [ %{ ]AT_LALR1_CC_IF([typedef yy::Location YYLTYPE; -m4_ifval([$6], , [#define YYSTYPE int])]) + m4_ifval([$6], , [#define YYSTYPE int])]) [static int yylex (]AT_LEX_FORMALS[); ]AT_LALR1_CC_IF([], [static void yyerror (const char *msg);]) [%} -]m4_ifval([$6], [%type 'x' ';' thing line input])[ +]m4_ifval([$6], [%type '(' 'x' 'y' ')' ';' thing line input])[ -%printer { fprintf (yyoutput, "%d@%d-%d", $$, RANGE (@$)); } - input line thing 'x' +%printer + { + ]AT_LALR1_CC_IF([cdebug_ << $$;], + [fprintf (yyoutput, "%d", $$)])[; + } + input line thing 'x' 'y' %destructor { printf ("Freeing nterm input (%d@%d-%d)\n", $$, RANGE (@$)); } @@ -361,7 +217,18 @@ m4_ifval([$6], , [#define YYSTYPE int])]) { printf ("Freeing token 'x' (%d@%d-%d)\n", $$, RANGE (@$)); } 'x' +%destructor + { printf ("Freeing token 'y' (%d@%d-%d)\n", $$, RANGE (@$)); } + 'y' + %% +/* + This grammar is made to exercise error recovery. + "Lines" starting with `(' support error recovery, with + ')' as synchronizing token. Lines starting with 'x' can never + be recovered from if in error. +*/ + input: /* Nothing. */ { @@ -385,23 +252,24 @@ line: $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2), $3, RANGE (@3), $4, RANGE (@4)); } -| thing thing ';' +| '(' thing thing ')' { $$ = $1; - printf ("line (%d@%d-%d): thing (%d@%d-%d) thing (%d@%d-%d) ';' (%d@%d-%d)\n", - $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2), $3, RANGE (@3)); + printf ("line (%d@%d-%d): '(' (%d@%d-%d) thing (%d@%d-%d) thing (%d@%d-%d) ')' (%d@%d-%d)\n", + $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2), + $3, RANGE (@3), $4, RANGE (@4)); } -| thing ';' +| '(' thing ')' { $$ = $1; - printf ("line (%d@%d-%d): thing (%d@%d-%d) ';' (%d@%d-%d)\n", - $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2)); + printf ("line (%d@%d-%d): '(' (%d@%d-%d) thing (%d@%d-%d) ')' (%d@%d-%d)\n", + $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2), $3, RANGE (@3)); } -| error ';' +| '(' error ')' { $$ = -1; - printf ("line (%d@%d-%d): error (@%d-%d) ';' (%d@%d-%d)\n", - $$, RANGE (@$), RANGE (@1), $2, RANGE (@2)); + printf ("line (%d@%d-%d): '(' (%d@%d-%d) error (@%d-%d) ')' (%d@%d-%d)\n", + $$, RANGE (@$), $1, RANGE (@1), RANGE (@2), $3, RANGE (@3)); } ; @@ -414,48 +282,30 @@ thing: } ; %% +/* Alias to ARGV[1]. */ +const char *yysource = 0; + static int yylex (]AT_LEX_FORMALS[) { - static const char input[] = - { - /* Exercise the discarding of stack top and input until `error' - can be reduced. */ - 'x', 'x', 'x', 'x', 'x', 'x', ';', - - /* Load the stack and provoke an error that cannot be caught by - the grammar, to check that the stack is cleared. */ - 'x', 'x', ';', - 'x', ';', - 'y' - }; static unsigned int counter = 0; - if (counter < (sizeof(input) / sizeof (input[0]))) - { + int c = ]AT_VAL[]m4_ifval([$6], [.ival])[ = counter++; + /* As in BASIC, line numbers go from 10 to 10. */ ]AT_LALR1_CC_IF( -[ int c = m4_ifval([$6], [yylval->ival], [*yylval]) = counter++; - /* As in BASIC, line numbers go from 10 to 10. */ - yylloc->begin.line = yylloc->begin.column = 10 * c; - yylloc->end.line = yylloc->end.column = yylloc->begin.line + 9; - printf ("sending: '%c' (%d@%d-%d)\n", - input[[c]], c, RANGE (*yylloc)); - return input[[c]]; +[ AT_LOC.begin.line = AT_LOC.begin.column = 10 * c; + AT_LOC.end.line = AT_LOC.end.column = AT_LOC.begin.line + 9; ], -[ int c = m4_ifval([$6], [yylval.ival], [yylval]) = counter++; - /* As in BASIC, line numbers go from 10 to 10. */ - yylloc.first_line = yylloc.first_column = 10 * c; - yylloc.last_line = yylloc.last_column = yylloc.first_line + 9; - printf ("sending: '%c' (%d@%d-%d)\n", - input[[c]], c, RANGE (yylloc)); - return input[[c]]; +[ AT_LOC.first_line = AT_LOC.first_column = 10 * c; + AT_LOC.last_line = AT_LOC.last_column = AT_LOC.first_line + 9; ])[ - } + + if (yysource[c]) + printf ("sending: '%c'", yysource[c]); else - { - printf ("sending: EOF\n"); - return EOF; - } + printf ("sending: EOF"); + printf (" (%d@%d-%d)\n", c, RANGE (]AT_LOC[)); + return yysource[c]; } ]AT_LALR1_CC_IF( @@ -477,7 +327,7 @@ static bool yydebug; int yyparse () { - yy::Parser parser (yydebug, yy::Location ()); + yy::Parser parser (yydebug); return parser.parse (); } ], @@ -488,9 +338,11 @@ yyerror (const char *msg) }])[ int -main (void) +main (int argc, const char *argv[]) { yydebug = !!getenv ("YYDEBUG"); + assert (argc == 2); + yysource = argv[1]; if (yyparse ()) { printf ("Parsing FAILED.\n"); @@ -506,62 +358,118 @@ AT_LALR1_CC_IF( AT_COMPILE_CXX([input])], [AT_CHECK([bison -o input.c input.y]) AT_COMPILE([input])]) -AT_PARSER_CHECK([./input], 1, -[[sending: 'x' (0@0-9) -thing (0@0-9): 'x' (0@0-9) + + +# Check the location of "empty" +# ----------------------------- +# I.e., epsilon-reductions, as in "(x)" which ends by reducing +# an empty "line" nterm. +# FIXME: This location is not satisfying. Depend on the lookahead? +AT_PARSER_CHECK([./input '(x)'], 0, +[[sending: '(' (0@0-9) +sending: 'x' (1@10-19) +thing (1@10-19): 'x' (1@10-19) +sending: ')' (2@20-29) +line (0@0-29): '(' (0@0-9) thing (1@10-19) ')' (2@20-29) +sending: EOF (3@30-39) +input (0@0-29): /* Nothing */ +input (2@0-29): line (0@0-29) input (0@0-29) +Successful parse. +]]) + + +# Check locations in error recovery +# --------------------------------- +# '(y)' is an error, but can be recovered from. But what's the location +# of the error itself ('y'), and of the resulting reduction ('(error)'). +AT_PARSER_CHECK([./input '(y)'], 0, +[[sending: '(' (0@0-9) +sending: 'y' (1@10-19) +10-19: syntax error, unexpected 'y', expecting 'x' +Freeing token 'y' (1@10-19) +sending: ')' (2@20-29) +line (-1@0-29): '(' (0@0-9) error (@10-19) ')' (2@20-29) +sending: EOF (3@30-39) +input (0@0-29): /* Nothing */ +input (2@0-29): line (-1@0-29) input (0@0-29) +Successful parse. +]]) + + +# Syntax errors caught by the parser +# ---------------------------------- +# Exercise the discarding of stack top and input until `error' +# can be reduced. +# +# '(', 'x', 'x', 'x', 'x', 'x', ')', +# +# Load the stack and provoke an error that cannot be caught by the +# grammar, to check that the stack is cleared. And make sure the +# lookahead is freed. +# +# '(', 'x', ')', +# '(', 'x', ')', +# 'y' +AT_PARSER_CHECK([./input '(xxxxx)(x)(x)y'], 1, +[[sending: '(' (0@0-9) sending: 'x' (1@10-19) thing (1@10-19): 'x' (1@10-19) sending: 'x' (2@20-29) thing (2@20-29): 'x' (2@20-29) sending: 'x' (3@30-39) -30-39: syntax error, unexpected 'x', expecting ';' +30-39: syntax error, unexpected 'x', expecting ')' Freeing nterm thing (2@20-29) Freeing nterm thing (1@10-19) -Freeing nterm thing (0@0-9) Freeing token 'x' (3@30-39) sending: 'x' (4@40-49) Freeing token 'x' (4@40-49) sending: 'x' (5@50-59) Freeing token 'x' (5@50-59) -sending: ';' (6@60-69) -line (-1@0-69): error (@0-59) ';' (6@60-69) -sending: 'x' (7@70-79) -thing (7@70-79): 'x' (7@70-79) +sending: ')' (6@60-69) +line (-1@0-69): '(' (0@0-9) error (@10-59) ')' (6@60-69) +sending: '(' (7@70-79) sending: 'x' (8@80-89) thing (8@80-89): 'x' (8@80-89) -sending: ';' (9@90-99) -line (7@70-99): thing (7@70-79) thing (8@80-89) ';' (9@90-99) -sending: 'x' (10@100-109) -thing (10@100-109): 'x' (10@100-109) -sending: ';' (11@110-119) -line (10@100-119): thing (10@100-109) ';' (11@110-119) -sending: 'y' (12@120-129) -120-129: syntax error, unexpected $undefined, expecting $end or 'x' -sending: EOF -Freeing nterm line (10@100-119) -Freeing nterm line (7@70-99) -Freeing nterm line (-1@0-69) +sending: ')' (9@90-99) +line (7@70-99): '(' (7@70-79) thing (8@80-89) ')' (9@90-99) +sending: '(' (10@100-109) +sending: 'x' (11@110-119) +thing (11@110-119): 'x' (11@110-119) +sending: ')' (12@120-129) +line (10@100-129): '(' (10@100-109) thing (11@110-119) ')' (12@120-129) +sending: 'y' (13@130-139) +input (0@100-129): /* Nothing */ +input (2@100-129): line (10@100-129) input (0@100-129) +input (2@70-129): line (7@70-99) input (2@100-129) +input (2@0-129): line (-1@0-69) input (2@70-129) +130-139: syntax error, unexpected 'y', expecting $end +Freeing nterm input (2@0-129) +Freeing token 'y' (13@130-139) Parsing FAILED. ]]) -AT_CLEANUP ]) # AT_CHECK_PRINTER_AND_DESTRUCTOR([BISON-OPTIONS], [UNION-FLAG]) # -------------------------------------------------------------- -# Produce `calc.y'. m4_define([AT_CHECK_PRINTER_AND_DESTRUCTOR], -[_AT_CHECK_PRINTER_AND_DESTRUCTOR($[1], $[2], $[3], $[4], [$1], [$2]) +[AT_SETUP([Printers and Destructors $2: $1]) + +_AT_CHECK_PRINTER_AND_DESTRUCTOR($[1], $[2], $[3], $[4], +[%error-verbose +%debug +%verbose +%locations +$1], [$2]) + +AT_CLEANUP ]) AT_CHECK_PRINTER_AND_DESTRUCTOR([]) AT_CHECK_PRINTER_AND_DESTRUCTOR([], [with union]) -AT_CHECK_PRINTER_AND_DESTRUCTOR([%locations %defines %skeleton "lalr1.cc"]) -AT_CHECK_PRINTER_AND_DESTRUCTOR([%locations %defines %skeleton "lalr1.cc"], - [with union]) - -# FIXME. These test cases fail. -#AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser]) -#AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser], [with union]) +AT_CHECK_PRINTER_AND_DESTRUCTOR([%defines %skeleton "lalr1.cc"]) +AT_CHECK_PRINTER_AND_DESTRUCTOR([%defines %skeleton "lalr1.cc"], [with union]) +AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser]) +AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser], [with union])