X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/94ebeba53ffd20afbc5d0c9caa3c80c40e910e4c..0049ec8628e5a320d055a0cea8676a58cec60986:/src/parse-gram.y?ds=inline diff --git a/src/parse-gram.y b/src/parse-gram.y index ba0ef6f9..86c1dece 100644 --- a/src/parse-gram.y +++ b/src/parse-gram.y @@ -1,6 +1,7 @@ %{/* Bison Grammar Parser -*- C -*- - Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. + Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, + Inc. This file is part of Bison, the GNU Compiler Compiler. @@ -81,7 +82,6 @@ static int current_prec = 0; %locations %pure-parser %error-verbose -%defines %name-prefix="gram_" %expect 0 @@ -132,7 +132,6 @@ static int current_prec = 0; %token PERCENT_CODE "%code" - PERCENT_CODE_TOP "%code-top" PERCENT_DEBUG "%debug" PERCENT_DEFAULT_PREC "%default-prec" PERCENT_DEFINE "%define" @@ -153,11 +152,11 @@ static int current_prec = 0; "%nondeterministic-parser" PERCENT_OUTPUT "%output" PERCENT_PARSE_PARAM "%parse-param" - PERCENT_PROVIDES "%provides" PERCENT_PURE_PARSER "%pure-parser" PERCENT_PUSH_PARSER "%push-parser" + PERCENT_PUSH_PULL_PARSER + "%push-pull-parser" PERCENT_REQUIRE "%require" - PERCENT_REQUIRES "%requires" PERCENT_SKELETON "%skeleton" PERCENT_START "%start" PERCENT_TOKEN_TABLE "%token-table" @@ -183,17 +182,17 @@ static int current_prec = 0; %printer { fputs (char_name ($$), stderr); } CHAR /* braceless is not to be used for rule or symbol actions, as it - calls translate_code. */ -%type STRING "%{...%}" EPILOGUE braceless content content.opt + calls code_props_plain_init. */ +%type STRING "%{...%}" EPILOGUE braceless content.opt %type "{...}" %printer { fputs (quotearg_style (c_quoting_style, $$), stderr); } STRING %printer { fprintf (stderr, "{\n%s\n}", $$); } - braceless content content.opt "{...}" "%{...%}" EPILOGUE + braceless content.opt "{...}" "%{...%}" EPILOGUE -%type TYPE ID ID_COLON +%type TYPE ID ID_COLON variable %printer { fprintf (stderr, "<%s>", $$); } TYPE -%printer { fputs ($$, stderr); } ID +%printer { fputs ($$, stderr); } ID variable %printer { fprintf (stderr, "%s:", $$); } ID_COLON %type INT @@ -223,9 +222,31 @@ prologue_declarations: prologue_declaration: grammar_declaration -| "%{...%}" { prologue_augment (translate_code ($1, @1), @1, union_seen); } +| "%{...%}" + { + code_props plain_code; + code_props_plain_init (&plain_code, $1, @1); + code_props_translate_code (&plain_code); + gram_scanner_last_string_free (); + muscle_code_grow (union_seen ? "post_prologue" : "pre_prologue", + plain_code.code, @1); + code_scanner_last_string_free (); + } | "%debug" { debug_flag = true; } -| "%define" STRING content.opt { muscle_insert ($2, $3); } +| "%define" variable content.opt + { + char const name_prefix[] = "percent_define("; + size_t length = strlen ($2); + char *name = xmalloc (sizeof name_prefix + length + 1); + strcpy (name, name_prefix); + strcpy (name + sizeof name_prefix - 1, $2); + strcpy (name + sizeof name_prefix - 1 + length, ")"); + if (muscle_find_const (name)) + warn_at (@2, _("%s `%s' redefined"), "%define variable", $2); + MUSCLE_INSERT_STRING (uniqstr_new (name), $3); + free (name); + muscle_grow_user_name_list ("percent_define_user_variables", $2, @2); + } | "%defines" { defines_flag = true; } | "%defines" STRING { @@ -244,7 +265,12 @@ prologue_declaration: } | "%initial-action" "{...}" { - muscle_code_grow ("initial_action", translate_symbol_action ($2, @2), @2); + code_props action; + code_props_symbol_action_init (&action, $2, @2); + code_props_translate_code (&action); + gram_scanner_last_string_free (); + muscle_code_grow ("initial_action", action.code, @2); + code_scanner_last_string_free (); } | "%language" STRING { language_argmatch ($2, 1, &@1); } | "%lex-param" "{...}" { add_param ("lex_param", $2, @2); } @@ -257,9 +283,33 @@ prologue_declaration: | "%output" "=" STRING { spec_outfile = $3; } /* deprecated */ | "%parse-param" "{...}" { add_param ("parse_param", $2, @2); } | "%pure-parser" { pure_parser = true; } -| "%push-parser" { push_parser = true; } +| "%push-parser" { push_parser = true; pull_parser = false; } +| "%push-pull-parser" { push_parser = true; pull_parser = true; } | "%require" STRING { version_check (&@2, $2); } -| "%skeleton" STRING { skeleton_arg ($2, 1, &@1); } +| "%skeleton" STRING + { + char const *skeleton_user = $2; + if (strchr (skeleton_user, '/')) + { + size_t dir_length = strlen (current_file); + char *skeleton_build; + while (dir_length && current_file[dir_length - 1] != '/') + --dir_length; + while (dir_length && current_file[dir_length - 1] == '/') + --dir_length; + skeleton_build = + xmalloc (dir_length + 1 + strlen (skeleton_user) + 1); + if (dir_length > 0) + { + strncpy (skeleton_build, current_file, dir_length); + skeleton_build[dir_length++] = '/'; + } + strcpy (skeleton_build + dir_length, skeleton_user); + skeleton_user = uniqstr_new (skeleton_build); + free (skeleton_build); + } + skeleton_arg (skeleton_user, 1, &@1); + } | "%token-table" { token_table_flag = true; } | "%verbose" { report_flag = report_states; } | "%yacc" { yacc_flag = true; } @@ -276,17 +326,15 @@ grammar_declaration: | "%destructor" "{...}" generic_symlist { symbol_list *list; - const char *action = translate_symbol_action ($2, @2); for (list = $3; list; list = list->next) - symbol_list_destructor_set (list, action, @2); + symbol_list_destructor_set (list, $2, @2); symbol_list_free ($3); } | "%printer" "{...}" generic_symlist { symbol_list *list; - const char *action = translate_symbol_action ($2, @2); for (list = $3; list; list = list->next) - symbol_list_printer_set (list, action, @2); + symbol_list_printer_set (list, $2, @2); symbol_list_free ($3); } | "%default-prec" @@ -297,10 +345,24 @@ grammar_declaration: { default_prec = false; } -| "%code" braceless { prologue_augment ($2, @2, true); } -| "%code-top" braceless { prologue_augment ($2, @2, false); } -| "%provides" braceless { muscle_code_grow ("provides", $2, @2); } -| "%requires" braceless { muscle_code_grow ("requires", $2, @2); } +| "%code" braceless + { + muscle_code_grow ("percent_code()", $2, @2); + code_scanner_last_string_free (); + } +| "%code" ID braceless + { + char const name_prefix[] = "percent_code("; + size_t length = strlen ($2); + char *name = xmalloc (sizeof name_prefix + length + 1); + strcpy (name, name_prefix); + strcpy (name + sizeof name_prefix - 1, $2); + strcpy (name + sizeof name_prefix - 1 + length, ")"); + muscle_code_grow (uniqstr_new (name), $3, @3); + free (name); + code_scanner_last_string_free (); + muscle_grow_user_name_list ("percent_code_user_qualifiers", $2, @2); + } ; @@ -316,27 +378,11 @@ union_name: ; grammar_declaration: - "%union" union_name "{...}" + "%union" union_name braceless { - char const *body = $3; - - /* Concatenate the %union bodies. If this is the first %union, make sure - the synchronization line appears after the opening '{' so as not to - confuse Doxygen. Otherwise, turn the previous %union's trailing '}' - into '\n', and omit the new %union's leading '{'. */ - if (!union_seen) - { - muscle_grow ("stype", "{", ""); - } - else - { - char *code = muscle_find ("stype"); - code[strlen (code) - 1] = '\n'; - } - body++; - union_seen = true; - muscle_code_grow ("stype", body, @3); + muscle_code_grow ("stype", $3, @3); + code_scanner_last_string_free (); } ; @@ -496,31 +542,38 @@ rhs: ; -/*-----------* - | content. | - *-----------*/ +/*----------------------------* + | variable and content.opt. | + *---------------------------*/ -content: - STRING -| braceless -; +variable: + ID + | STRING { $$ = uniqstr_new ($1); } /* deprecated and not M4-friendly */ + ; -/* Some content or "1" by default. */ +/* Some content or empty by default. */ content.opt: /* Nothing. */ { - static char one[] = "1"; - $$ = one; + $$ = ""; } -| content +| STRING ; +/*-------------* + | braceless. | + *-------------*/ + braceless: "{...}" { + code_props plain_code; $1[strlen ($1) - 1] = '\n'; - $$ = translate_code ($1 + 1, @1); + code_props_plain_init (&plain_code, $1+1, @1); + code_props_translate_code (&plain_code); + gram_scanner_last_string_free (); + $$ = plain_code.code; } ; @@ -566,8 +619,12 @@ epilogue.opt: /* Nothing. */ | "%%" EPILOGUE { - muscle_code_grow ("epilogue", translate_code ($2, @2), @2); + code_props plain_code; + code_props_plain_init (&plain_code, $2, @2); + code_props_translate_code (&plain_code); gram_scanner_last_string_free (); + muscle_code_grow ("epilogue", plain_code.code, @2); + code_scanner_last_string_free (); } ;