Paul Eggert [Fri, 24 May 2002 12:45:23 +0000 (12:45 +0000)]
* data/bison.simple (yyparse): Correct error handling to conform to
POSIX and yacc. Specifically, after syntax error is discovered,
do not reduce further before shifting the error token.
Clean up the code a bit by removing the labels yyerrdefault,
yyerrhandle, yyerrpop.
* NEWS: Document the above.
Paul Eggert [Fri, 24 May 2002 12:37:12 +0000 (12:37 +0000)]
(yyparse): Correct error handling to conform to
POSIX and yacc. Specifically, after syntax error is discovered,
do not reduce further before shifting the error token.
Clean up the code a bit by removing the labels yyerrdefault,
yyerrhandle, yyerrpop.
Paul Hilfinger [Mon, 20 May 2002 22:56:53 +0000 (22:56 +0000)]
* data/bison.simple (yyr1): Don't use yy_token_number_type as element
type; it isn't always big enough, since it doesn't necessarily
include non-terminals.
(yytranslate): Expand definition of yy_token_number_type, so that
the latter can be removed.
(yy_token_number_type): Remove, only one use.
* data/bison.c++ (r1_): Parallel change to yyr1 in bison.simple---
don't use TokenNumberType as element type.
* tests/regression.at: Modify expected output to agree with change
to yyr1 and yytranslate.
Akim Demaille [Tue, 7 May 2002 08:07:32 +0000 (08:07 +0000)]
Kill GCC warnings.
* src/reduce.c (nonterminals_reduce): Don't loop over RITEM: loop
over the RHS of each rule.
* src/gram.h, src/gram.c (nritems): Is `unsigned int', not int.
* src/state.h (state_t): Member `nitems' is unsigned short.
* src/LR0.c (get_state): Adjust.
* src/reader.c (packgram): Likewise.
* src/output.c (GENERATE_MUSCLE_INSERT_TABLE): `max' is of type
`Type'.
(muscle_insert_int_table): Remove, unused.
(prepare_rules): Remove `max'.
Akim Demaille [Mon, 6 May 2002 08:23:41 +0000 (08:23 +0000)]
* src/LR0.c (new_state, get_state): Instead of using the global
`kernel_size' and `kernel_base', have two new arguments:
`core_size' and `core'.
Adjust callers.
Akim Demaille [Sun, 5 May 2002 11:56:49 +0000 (11:56 +0000)]
New experimental feature: display the lookaheads in the report and
graph.
* src/print (print_core): When --trace-flag, display the rules
lookaheads.
* src/print_graph.c (print_core): Likewise.
Swap the arguments.
Adjust caller.
Akim Demaille [Sun, 5 May 2002 11:56:06 +0000 (11:56 +0000)]
* src/output.c (output_unsigned_int_table): New.
(prepare_rules): `i' is unsigned.
`prhs', `rline', `r2' are unsigned int.
Rename muscle `rhs_number_max' as `rhs_max'.
Output muscles `prhs_max', `rline_max', and `r2_max'.
Free rline and r1.
* data/bison.simple, data/bison.c++: Adjust to use these muscles
to compute types instead of constant types.
* tests/regression.at (Web2c Actions): Adjust.
Akim Demaille [Fri, 3 May 2002 08:42:48 +0000 (08:42 +0000)]
* data/bison.simple (b4_token_enum): New.
(b4_token_defines): Use it to output tokens both as #define and
enums.
Suggested by Paul Eggert.
* src/output.c (token_definitions_output): Don't output spurious
white spaces.
Akim Demaille [Thu, 2 May 2002 14:33:48 +0000 (14:33 +0000)]
* src/reader.c (copy_at, copy_dollarm parse_braces, parse_action)
(parse_guard): Rename the formal argument `stack_offset' as
`rule_length', which is more readable.
Adjust callers.
(copy_at, copy_dollar): Instead of outputting the hard coded
values of $$, $n and so forth, output invocation to b4_lhs_value,
b4_lhs_location, b4_rhs_value, and b4_rhs_location.
* data/bison.simple, data/bison.c++ (b4_lhs_value)
(b4_lhs_location, b4_rhs_value, and b4_rhs_location: New.
Robert Anisko [Thu, 25 Apr 2002 14:36:38 +0000 (14:36 +0000)]
* src/scan-skel.l: Postprocess quadrigraphs.
* src/reader.c (copy_character): New function, used to output
single characters while replacing `[' and `]' with quadrigraphs, to
avoid troubles with M4 quotes.
(copy_comment): Output characters with copy_character.
(read_additionnal_code): Likewise.
(copy_string2): Likewise.
(copy_definition): Likewise.
* tests/calc.at: Exercise M4 quoting.
Robert Anisko [Wed, 24 Apr 2002 16:22:57 +0000 (16:22 +0000)]
* tests/calc.at: Exercise prologue splitting.
* data/bison.simple, data/bison.c++: Use `b4_pre_prologue' and
`b4_post_prologue' instead of `b4_prologue'.
* src/output.c (prepare): Add the `pre_prologue' and `post_prologue'
muscles.
(output): Free pre_prologue_obstack and post_prologue_obstack.
* src/files.h, src/files.c (attrs_obstack): Remove.
(pre_prologue_obstack, post_prologue_obstack): New.
* src/reader.c (copy_definition): Add a parameter to specify the
obstack to fill, instead of using attrs_obstack unconditionally.
(read_declarations): Pass pre_prologue_obstack to copy_definition if
`%union' has not yet been seen, pass post_prologue_obstack otherwise.
Paul Eggert [Wed, 24 Apr 2002 05:56:13 +0000 (05:56 +0000)]
* data/bison.simple: Remove unnecessary commentary and white
space differences from 1_29-branch.
Depend on YYERROR_VERBOSE, not defined (YYERROR_VERBOSE).
(union yyalloc, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYCOPY,
YYSTACK_RELOCATE): Do not define if yyoverflow is defined, or
if this is a C++ parser and YYSTYPE or YYLTYPE has nontrivial
constructors or destructors.
(yyparse) [! defined YYSTACK_RELOCATE]: Do not relocate the stack.
Paul Eggert [Wed, 24 Apr 2002 05:55:48 +0000 (05:55 +0000)]
Remove unnecessary commentary and white space differences from
1_29-branch. Depend on YYERROR_VERBOSE, not defined (YYERROR_VERBOSE).
(union yyalloc, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYCOPY,
YYSTACK_RELOCATE): Do not define if yyoverflow is defined, or
if this is a C++ parser and YYSTYPE or YYLTYPE has nontrivial
constructors or destructors.
(yyparse) [! defined YYSTACK_RELOCATE]: Do not relocate the stack.
* tests/sets.at (AT_EXTRACT_SETS): Don't use 8 char long sed labels.
* tests/synclines.at (AT_TEST_SYNCLINE): Be robust to GCC's
location with columns.
* tests/conflicts.at (%nonassoc and eof): Don't use `error.h'.
All reported by Paul Eggert.
* src/reduce.c (dump_grammar): Move to...
* src/gram.h, src/gram.c (grammar_dump): here.
Be sure to separate long item numbers.
Don't read the members of a rule's prec if its nil.
* src/output.c (table_size, table_grow): New.
(MAXTABLE): Remove, replace uses with table_size.
(pack_vector): Instead of dying when the table is too big, grow it.
* src/reader.c (token_translations_init): 256 is now the default
value for the error token, i.e., it will be assigned another
number if the user assigned 256 to one of her tokens.
(reader): Don't force 256 to error.
* doc/bison.texinfo (Symbols): Adjust.
* tests/torture.at (AT_DATA_HORIZONTAL_GRAMMAR)
(AT_DATA_TRIANGULAR_GRAMMAR): Number the tokens as 1, 2, 3
etc. instead of 10, 20, 30 (which was used to `jump' over error
(256) and undefined (2)).
* doc/bison.texinfo (Actions): Make clear that `|' is not the same
as Lex/Flex'.
(Debugging): More details about enabling the debugging features.
(Table of Symbols): Describe $$, $n, @$, and @n.
Suggested by Tim Josling.
* tests/calc.at (_AT_CHECK_CALC_ERROR): Receive as argument the
full stderr, and strip it according to the bison options, instead
of composing the error message from different bits.
This makes it easier to check for several error messages.
Adjust all the invocations.
Add an invocation exercising the error token.
Add an invocation demonstrating a stupid error message.
(_AT_DATA_CALC_Y): Follow the GCS: initial column is 1, not 0.
Adjust the tests.
Error message are for stderr, not stdout.
* src/gram.h, src/gram.c (error_token_number): Remove, use
errtoken->number.
* src/reader.c (reader): Don't specify the user token number (2)
for $undefined, as it uselessly prevents using it.
* src/gram.h (token_number_t): Move to...
* src/symtab.h: here.
(state_t.number): Is a token_number_t.
* src/print.c, src/reader.c: Use undeftoken->number instead of
hard coded 2.
(Even though this 2 is not the same as above: the number of the
undeftoken remains being 2, it is its user token number which
might not be 2).
* src/output.c (prepare_tokens): Rename the `maxtok' muscle with
`user_token_number_max'.
Output `undef_token_number'.
* data/bison.simple, data/bison.c++: Use them.
Be sure to map invalid yylex return values to
`undef_token_number'. This saves us from gratuitous SEGV.
* tests/conflicts.at (Solved SR Conflicts)
(Unresolved SR Conflicts): Adjust.
* tests/regression.at (Web2c Actions): Adjust.
* data/bison.c++: s/b4_item_number_max/b4_rhs_number_max/.
Adding #line.
Remove the duplicate `typedefs'.
(RhsNumberType): Fix the declaration and various other typos.
Use __ofile__.
* data/bison.simple: Use __ofile__.
* src/scan-skel.l: Handle __ofile__.
* src/gram.h (item_number_t): New, the type of item numbers in
RITEM. Note that it must be able to code symbol numbers as
positive number, and the negation of rule numbers as negative
numbers.
Adjust all dependencies (pretty many).
* src/reduce.c (rule): Remove this `short *' pointer: use
item_number_t.
* src/system.h (MINSHORT, MAXSHORT): Remove.
Include `limits.h'.
Adjust dependencies to using SHRT_MAX and SHRT_MIN.
(shortcpy): Remove.
(MAXTABLE): Move to...
* src/output.c (MAXTABLE): here.
(prepare_rules): Use output_int_table to output rhs.
* data/bison.simple, data/bison.c++: Adjust.
* tests/torture.at (Big triangle): Move the limit from 254 to
500.
* tests/regression.at (Web2c Actions): Ajust.
Trying with bigger grammars shows various phenomena: at 3000 (28Mb
of grammar file) bison is killed by my system, at 2000 (12Mb) bison
passes, but produces negative #line number, once fixed, GCC is
killed while compiling 14Mb, at 1500 (6.7 Mb of grammar, 8.2Mb of
C), it passes.
* src/state.h (state_h): Code input lines on ints, not shorts.
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