X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/59420cd7162dee87e098360e3b1a86eff83835e3..bc6038978f5fdd2c25bb30cc678811a26ad5a444:/src/parse-gram.y diff --git a/src/parse-gram.y b/src/parse-gram.y index 01b640df..6e58835a 100644 --- a/src/parse-gram.y +++ b/src/parse-gram.y @@ -20,6 +20,7 @@ #include #include "system.h" +#include "c-ctype.h" #include "complain.h" #include "conflicts.h" #include "files.h" @@ -30,8 +31,10 @@ #include "quotearg.h" #include "reader.h" #include "symlist.h" +#include "symtab.h" #include "scan-gram.h" #include "scan-code.h" +#include "xmemdup0.h" #define YYLLOC_DEFAULT(Current, Rhs, N) (Current) = lloc_default (Rhs, N) static YYLTYPE lloc_default (YYLTYPE const *, int); @@ -84,15 +87,15 @@ static char const *char_name (char); #define YYTYPE_UINT8 uint_fast8_t } -%debug -%verbose -%defines -%locations -%pure-parser -%define parse.error "verbose" +%define api.prefix "gram_" +%define api.pure +%define locations +%define parse.error verbose %define parse.lac full -%name-prefix="gram_" +%define parse.trace +%defines %expect 0 +%verbose %initial-action { @@ -184,30 +187,30 @@ static char const *char_name (char); %token TAG_NONE "<>" %type CHAR -%printer { fputs (char_name ($$), stderr); } CHAR +%printer { fputs (char_name ($$), yyo); } CHAR /* braceless is not to be used for rule or symbol actions, as it calls code_props_plain_init. */ %type STRING "%{...%}" EPILOGUE braceless content.opt %type "{...}" "%?{...}" -%printer { fputs (quotearg_style (c_quoting_style, $$), stderr); } +%printer { fputs (quotearg_style (c_quoting_style, $$), yyo); } STRING -%printer { fprintf (stderr, "{\n%s\n}", $$); } +%printer { fprintf (yyo, "{\n%s\n}", $$); } braceless content.opt "{...}" "%{...%}" EPILOGUE -%type BRACKETED_ID ID ID_COLON PERCENT_FLAG TAG variable -%printer { fputs ($$, stderr); } -%printer { fprintf (stderr, "[%s]", $$); } BRACKETED_ID -%printer { fprintf (stderr, "%s:", $$); } ID_COLON -%printer { fprintf (stderr, "%%%s", $$); } PERCENT_FLAG -%printer { fprintf (stderr, "<%s>", $$); } TAG +%type BRACKETED_ID ID ID_COLON PERCENT_FLAG TAG tag variable +%printer { fputs ($$, yyo); } +%printer { fprintf (yyo, "[%s]", $$); } BRACKETED_ID +%printer { fprintf (yyo, "%s:", $$); } ID_COLON +%printer { fprintf (yyo, "%%%s", $$); } PERCENT_FLAG +%printer { fprintf (yyo, "<%s>", $$); } TAG tag %type INT -%printer { fprintf (stderr, "%d", $$); } +%printer { fprintf (yyo, "%d", $$); } %type id id_colon string_as_id symbol symbol.prec -%printer { fprintf (stderr, "%s", $$->tag); } -%printer { fprintf (stderr, "%s:", $$->tag); } id_colon +%printer { fprintf (yyo, "%s", $$->tag); } +%printer { fprintf (yyo, "%s:", $$->tag); } id_colon %type precedence_declarator %type symbols.1 symbols.prec generic_symlist generic_symlist_item @@ -314,7 +317,6 @@ prologue_declaration: | "%expect" INT { expected_sr_conflicts = $2; } | "%expect-rr" INT { expected_rr_conflicts = $2; } | "%file-prefix" STRING { spec_file_prefix = $2; } -| "%file-prefix" "=" STRING { spec_file_prefix = $3; } /* deprecated */ | "%glr-parser" { nondeterministic_parser = true; @@ -331,17 +333,15 @@ prologue_declaration: } | "%language" STRING { language_argmatch ($2, grammar_prio, @1); } | "%name-prefix" STRING { spec_name_prefix = $2; } -| "%name-prefix" "=" STRING { spec_name_prefix = $3; } /* deprecated */ | "%no-lines" { no_lines_flag = true; } | "%nondeterministic-parser" { nondeterministic_parser = true; } | "%output" STRING { spec_outfile = $2; } -| "%output" "=" STRING { spec_outfile = $3; } /* deprecated */ | "%param" { current_param = $1; } params { current_param = param_none; } | "%require" STRING { version_check (&@2, $2); } | "%skeleton" STRING { char const *skeleton_user = $2; - if (mbschr (skeleton_user, '/')) + if (strchr (skeleton_user, '/')) { size_t dir_length = strlen (current_file); char *skeleton_build; @@ -353,7 +353,7 @@ prologue_declaration: xmalloc (dir_length + 1 + strlen (skeleton_user) + 1); if (dir_length > 0) { - strncpy (skeleton_build, current_file, dir_length); + memcpy (skeleton_build, current_file, dir_length); skeleton_build[dir_length++] = '/'; } strcpy (skeleton_build + dir_length, skeleton_user); @@ -385,19 +385,17 @@ grammar_declaration: { grammar_start_symbol_set ($2, @2); } -| "%destructor" "{...}" generic_symlist +| code_props_type "{...}" generic_symlist { - symbol_list *list; - for (list = $3; list; list = list->next) - symbol_list_destructor_set (list, $2, @2); - symbol_list_free ($3); - } -| "%printer" "{...}" generic_symlist - { - symbol_list *list; - for (list = $3; list; list = list->next) - symbol_list_printer_set (list, $2, @2); - symbol_list_free ($3); + code_props code; + code_props_symbol_action_init (&code, $2, @2); + code_props_translate_code (&code); + { + symbol_list *list; + for (list = $3; list; list = list->next) + symbol_list_code_props_set (list, $1, &code); + symbol_list_free ($3); + } } | "%default-prec" { @@ -421,6 +419,13 @@ grammar_declaration: } ; +%type code_props_type; +%union {code_props_type code_type;}; +%printer { fprintf (yyo, "%s", code_props_type_string ($$)); } ; +code_props_type: + "%destructor" { $$ = destructor; } +| "%printer" { $$ = printer; } +; /*---------. | %union. | @@ -502,9 +507,9 @@ symbols.prec: ; symbol.prec: - symbol { $$ = $1; } - | symbol INT { $$ = $1; symbol_user_token_number_set ($1, $2, @2); } - ; + symbol { $$ = $1; } +| symbol INT { $$ = $1; symbol_user_token_number_set ($1, $2, @2); } +; /* One or more symbols to be %typed. */ symbols.1: @@ -521,9 +526,13 @@ generic_symlist: generic_symlist_item: symbol { $$ = symbol_list_sym_new ($1, @1); } -| TAG { $$ = symbol_list_type_new ($1, @1); } -| "<*>" { $$ = symbol_list_default_tagged_new (@1); } -| "<>" { $$ = symbol_list_default_tagless_new (@1); } +| tag { $$ = symbol_list_type_new ($1, @1); } +; + +tag: + TAG +| "<*>" { $$ = uniqstr_new ("*"); } +| "<>" { $$ = uniqstr_new (""); } ; /* One token definition. */ @@ -712,7 +721,6 @@ epilogue.opt: %% - /* Return the location of the left-hand side of a rule whose right-hand side is RHS[1] ... RHS[N]. Ignore empty nonterminals in the right-hand side, and return an empty location equal to the end @@ -764,28 +772,20 @@ add_param (param_type type, char *decl, location loc) /* Strip the surrounding '{' and '}', and any blanks just inside the braces. */ - while (*--p == ' ' || *p == '\t') - continue; + --p; + while (c_isspace ((unsigned char) *p)) + --p; p[1] = '\0'; - while (*++decl == ' ' || *decl == '\t') - continue; + ++decl; + while (c_isspace ((unsigned char) *decl)) + ++decl; } if (! name_start) - complain_at (loc, _("missing identifier in parameter declaration")); + complain (&loc, complaint, _("missing identifier in parameter declaration")); else { - char *name; - size_t name_len; - - for (name_len = 1; - memchr (alphanum, name_start[name_len], sizeof alphanum); - name_len++) - continue; - - name = xmalloc (name_len + 1); - memcpy (name, name_start, name_len); - name[name_len] = '\0'; + char *name = xmemdup0 (name_start, strspn (name_start, alphanum)); if (type & param_lex) muscle_pair_list_grow ("lex_param", decl, name); if (type & param_parse) @@ -802,16 +802,16 @@ version_check (location const *loc, char const *version) { if (strverscmp (version, PACKAGE_VERSION) > 0) { - complain_at (*loc, "require bison %s, but have %s", - version, PACKAGE_VERSION); - exit (63); + complain (loc, complaint, "require bison %s, but have %s", + version, PACKAGE_VERSION); + exit (EX_MISMATCH); } } static void gram_error (location const *loc, char const *msg) { - complain_at (*loc, "%s", msg); + complain (loc, complaint, "%s", msg); } char const *