+[AT_SETUP([Printers and Destructors $2: $1])
+
+$3
+_AT_CHECK_PRINTER_AND_DESTRUCTOR($[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([%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])
+
+
+
+## ----------------------------------------- ##
+## Default tagless %printer and %destructor. ##
+## ----------------------------------------- ##
+
+# Check that the right %printer and %destructor are called, that they're not
+# called for $end, and that $$ and @$ work correctly.
+
+AT_SETUP([Default tagless %printer and %destructor])
+
+AT_DATA_GRAMMAR([[input.y]],
+[[%error-verbose
+%debug
+%locations
+%initial-action {
+ @$.first_line = @$.last_line = 1;
+ @$.first_column = @$.last_column = 1;
+}
+
+%{
+# include <stdio.h>
+# include <stdlib.h>
+ static void yyerror (const char *msg);
+ static int yylex (void);
+# define USE(SYM)
+%}
+
+%printer {
+ fprintf (yyoutput, "<*> printer should not be called.\n");
+} <*>
+
+%printer {
+ fprintf (yyoutput, "<> printer for '%c' @ %d", $$, @$.first_column);
+} <>
+%destructor {
+ fprintf (stdout, "<> destructor for '%c' @ %d.\n", $$, @$.first_column);
+} <>
+
+%printer {
+ fprintf (yyoutput, "'b'/'c' printer for '%c' @ %d", $$, @$.first_column);
+} 'b' 'c'
+%destructor {
+ fprintf (stdout, "'b'/'c' destructor for '%c' @ %d.\n", $$, @$.first_column);
+} 'b' 'c'
+
+%destructor {
+ fprintf (yyoutput, "<*> destructor should not be called.\n");
+} <*>
+
+%%
+
+start: 'a' 'b' 'c' 'd' 'e' { $$ = 'S'; USE(($1, $2, $3, $4, $5)); } ;
+
+%%
+
+static int
+yylex (void)
+{
+ static char const input[] = "abcd";
+ static size_t toknum;
+ if (! (toknum < sizeof input))
+ abort ();
+ yylval = input[toknum++];
+ yylloc.first_line = yylloc.last_line = 1;
+ yylloc.first_column = yylloc.last_column = toknum;
+ return yylval;
+}
+
+static void
+yyerror (const char *msg)
+{
+ fprintf (stderr, "%s\n", msg);
+}
+
+int
+main (void)
+{
+ yydebug = 1;
+ return yyparse ();
+}
+]])
+
+AT_CHECK([bison -o input.c input.y])
+AT_COMPILE([input])
+AT_PARSER_CHECK([./input], 1,
+[[<> destructor for 'd' @ 4.
+'b'/'c' destructor for 'c' @ 3.
+'b'/'c' destructor for 'b' @ 2.
+<> destructor for 'a' @ 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)
+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)
+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)
+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)
+Entering state 6
+Reading a token: Now at end of input.
+syntax error, unexpected $end, expecting 'e'
+Error: popping token 'd' (1.4-1.4: <> printer for 'd' @ 4)
+Stack now 0 1 3 5
+Error: popping token 'c' (1.3-1.3: 'b'/'c' printer for 'c' @ 3)
+Stack now 0 1 3
+Error: popping token 'b' (1.2-1.2: 'b'/'c' printer for 'b' @ 2)
+Stack now 0 1
+Error: popping token 'a' (1.1-1.1: <> printer for 'a' @ 1)
+Stack now 0
+Cleanup: discarding lookahead token $end (1.5-1.5: )
+Stack now 0
+]])
+
+AT_CLEANUP
+
+
+
+## ------------------------------------------------------ ##
+## Default tagged and per-type %printer and %destructor. ##
+## ------------------------------------------------------ ##
+
+AT_SETUP([Default tagged and per-type %printer and %destructor])
+
+AT_DATA_GRAMMAR([[input.y]],
+[[%error-verbose
+%debug
+
+%{
+# include <stdio.h>
+# include <stdlib.h>
+ static void yyerror (const char *msg);
+ static int yylex (void);
+# define USE(SYM)
+%}
+
+%printer {
+ fprintf (yyoutput, "<> printer should not be called.\n");
+} <>
+
+%union { int field0; int field1; int field2; }
+%type <field0> start 'a' 'g'
+%type <field1> 'e'
+%type <field2> 'f'
+%printer {
+ fprintf (yyoutput, "<*>/<field2>/e printer");
+} <*> 'e' <field2>
+%destructor {
+ fprintf (stdout, "<*>/<field2>/e destructor.\n");
+} <*> 'e' <field2>
+
+%type <field1> 'b'
+%printer { fprintf (yyoutput, "<field1> printer"); } <field1>
+%destructor { fprintf (stdout, "<field1> destructor.\n"); } <field1>
+
+%type <field0> 'c'
+%printer { fprintf (yyoutput, "'c' printer"); } 'c'
+%destructor { fprintf (stdout, "'c' destructor.\n"); } 'c'
+
+%type <field1> 'd'
+%printer { fprintf (yyoutput, "'d' printer"); } 'd'
+%destructor { fprintf (stdout, "'d' destructor.\n"); } 'd'
+
+%destructor {
+ fprintf (yyoutput, "<> destructor should not be called.\n");
+} <>
+
+%%
+
+start:
+ 'a' 'b' 'c' 'd' 'e' 'f' 'g'
+ {
+ USE(($1, $2, $3, $4, $5, $6, $7));
+ $$ = 'S';
+ }
+ ;
+
+%%
+
+static int
+yylex (void)
+{
+ static char const input[] = "abcdef";
+ static size_t toknum;
+ if (! (toknum < sizeof input))
+ abort ();
+ return input[toknum++];
+}
+
+static void
+yyerror (const char *msg)
+{
+ fprintf (stderr, "%s\n", msg);
+}
+
+int
+main (void)
+{
+ yydebug = 1;
+ return yyparse ();
+}
+]])
+
+AT_CHECK([bison -o input.c input.y])
+AT_COMPILE([input])
+AT_PARSER_CHECK([./input], 1,
+[[<*>/<field2>/e destructor.
+<*>/<field2>/e destructor.
+'d' destructor.
+'c' destructor.
+<field1> destructor.
+<*>/<field2>/e destructor.
+]],
+[[Starting parse
+Entering state 0
+Reading a token: Next token is token 'a' (<*>/<field2>/e printer)
+Shifting token 'a' (<*>/<field2>/e printer)
+Entering state 1
+Reading a token: Next token is token 'b' (<field1> printer)
+Shifting token 'b' (<field1> printer)
+Entering state 3
+Reading a token: Next token is token 'c' ('c' printer)
+Shifting token 'c' ('c' printer)
+Entering state 5
+Reading a token: Next token is token 'd' ('d' printer)
+Shifting token 'd' ('d' printer)
+Entering state 6
+Reading a token: Next token is token 'e' (<*>/<field2>/e printer)
+Shifting token 'e' (<*>/<field2>/e printer)
+Entering state 7
+Reading a token: Next token is token 'f' (<*>/<field2>/e printer)
+Shifting token 'f' (<*>/<field2>/e printer)
+Entering state 8
+Reading a token: Now at end of input.
+syntax error, unexpected $end, expecting 'g'
+Error: popping token 'f' (<*>/<field2>/e printer)
+Stack now 0 1 3 5 6 7
+Error: popping token 'e' (<*>/<field2>/e printer)
+Stack now 0 1 3 5 6
+Error: popping token 'd' ('d' printer)
+Stack now 0 1 3 5
+Error: popping token 'c' ('c' printer)
+Stack now 0 1 3
+Error: popping token 'b' (<field1> printer)
+Stack now 0 1
+Error: popping token 'a' (<*>/<field2>/e printer)
+Stack now 0
+Cleanup: discarding lookahead token $end ()
+Stack now 0
+]])
+
+AT_CLEANUP
+
+
+
+## ------------------------------------------------------------- ##
+## Default %printer and %destructor for user-defined end token. ##
+## ------------------------------------------------------------- ##
+
+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],
+[m4_if($1, 0,
+ [m4_pushdef([kind], []) m4_pushdef([not_kind], [*])],
+ [m4_pushdef([kind], [*]) m4_pushdef([not_kind], [])])
+
+AT_DATA_GRAMMAR([[input]]$1[[.y]],
+[[%error-verbose
+%debug
+%locations
+%initial-action {
+ @$.first_line = @$.last_line = 1;
+ @$.first_column = @$.last_column = 1;
+}
+
+%{
+# include <stdio.h>
+# include <stdlib.h>
+ static void yyerror (const char *msg);
+ static int yylex (void);
+# define USE(SYM)
+%}
+
+%destructor {
+ fprintf (yyoutput, "<]]not_kind[[> destructor should not be called.\n");
+} <]]not_kind[[>
+
+%token END 0
+%printer {
+ fprintf (yyoutput, "<]]kind[[> for '%c' @ %d", $$, @$.first_column);
+} <]]kind[[>
+%destructor {
+ fprintf (stdout, "<]]kind[[> for '%c' @ %d.\n", $$, @$.first_column);
+} <]]kind[[>
+
+%printer {
+ fprintf (yyoutput, "<]]not_kind[[> printer should not be called.\n");
+} <]]not_kind[[>
+
+]]m4_if($1, 0, [[[
+]]],
+[[[%union { char tag; }
+%type <tag> start END]]])[[
+
+%%
+
+start: { $$ = 'S'; } ;
+
+%%
+
+static int
+yylex (void)
+{
+ static int called;
+ if (called++)
+ abort ();
+ yylval]]m4_if($1, 0,, [[[.tag]]])[[ = 'E';
+ yylloc.first_line = yylloc.last_line = 1;
+ yylloc.first_column = yylloc.last_column = 1;
+ return 0;
+}
+
+static void
+yyerror (const char *msg)
+{
+ fprintf (stderr, "%s\n", msg);
+}
+
+int
+main (void)
+{
+ yydebug = 1;
+ return yyparse ();
+}
+]])
+
+AT_CHECK([bison -o input$1.c input$1.y])
+AT_COMPILE([input$1])
+AT_PARSER_CHECK([./input$1], 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)
+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)
+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)
+]])
+
+m4_popdef([kind])
+m4_popdef([not_kind])
projects / bison.git / blobdiff