X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Flexer.ll;h=66da12433604f8a484564883fc057ae0bda8ffb8;hb=0f9658c1391e09387e050231279d86c9f25ae485;hp=71473faa30fc9d4375de779494b183cff29416fb;hpb=16a04d4a27ff185fd83125d965d48b534182d7d2;p=lilypond.git diff --git a/lily/lexer.ll b/lily/lexer.ll index 71473faa30..66da124336 100644 --- a/lily/lexer.ll +++ b/lily/lexer.ll @@ -2,7 +2,7 @@ /* This file is part of LilyPond, the GNU music typesetter. - Copyright (C) 1996--2012 Han-Wen Nienhuys + Copyright (C) 1996--2014 Han-Wen Nienhuys Jan Nieuwenhuizen LilyPond is free software: you can redistribute it and/or modify @@ -123,7 +123,6 @@ SCM (* scm_parse_error_handler) (void *); %option never-interactive %option warn -%x extratoken %x chords %x figures %x incl @@ -186,36 +185,6 @@ BOM_UTF8 \357\273\277 // swallow and ignore carriage returns } -{ANY_CHAR} { - /* Generate a token without swallowing anything */ - - /* First unswallow the eaten character */ - add_lexed_char (-YYLeng ()); - yyless (0); - - /* produce requested token */ - int type = scm_to_int (scm_caar (extra_tokens_)); - yylval = scm_cdar (extra_tokens_); - extra_tokens_ = scm_cdr (extra_tokens_); - if (scm_is_null (extra_tokens_)) - yy_pop_state (); - - return type; -} - -<> { - /* Generate a token without swallowing anything */ - - /* produce requested token */ - int type = scm_to_int (scm_caar (extra_tokens_)); - yylval = scm_cdar (extra_tokens_); - extra_tokens_ = scm_cdr (extra_tokens_); - if (scm_is_null (extra_tokens_)) - yy_pop_state (); - - return type; -} - /* Use the trailing context feature. Otherwise, the BOM will not be found if the file starts with an identifier definition. */ {BOM_UTF8}/.* { @@ -361,12 +330,11 @@ BOM_UTF8 \357\273\277 } } (\$|#) { // scm for the filename - int n = 0; Input hi = here_input(); hi.step_forward (); - SCM sval = ly_parse_scm (hi.start (), &n, hi, - be_safe_global && is_main_input_, parser_); - sval = eval_scm (sval); + SCM sval = ly_parse_scm (hi, be_safe_global && is_main_input_, parser_); + sval = eval_scm (sval, hi); + int n = hi.end () - hi.start (); for (int i = 0; i < n; i++) { @@ -416,15 +384,14 @@ BOM_UTF8 \357\273\277 return MULTI_MEASURE_REST; } # { //embedded scm - int n = 0; Input hi = here_input(); hi.step_forward (); - SCM sval = ly_parse_scm (hi.start (), &n, hi, - be_safe_global && is_main_input_, parser_); + SCM sval = ly_parse_scm (hi, be_safe_global && is_main_input_, parser_); if (sval == SCM_UNDEFINED) error_level_ = 1; + int n = hi.end () - hi.start (); for (int i = 0; i < n; i++) { yyinput (); @@ -436,11 +403,11 @@ BOM_UTF8 \357\273\277 } \$ { //immediate scm - int n = 0; Input hi = here_input(); hi.step_forward (); - SCM sval = ly_parse_scm (hi.start (), &n, hi, - be_safe_global && is_main_input_, parser_); + SCM sval = ly_parse_scm (hi, be_safe_global && is_main_input_, parser_); + + int n = hi.end () - hi.start (); for (int i = 0; i < n; i++) { @@ -448,7 +415,7 @@ BOM_UTF8 \357\273\277 } char_count_stack_.back () += n; - sval = eval_scm (sval, '$'); + sval = eval_scm (sval, hi, '$'); int token = scan_scm_id (sval); if (!scm_is_eq (yylval, SCM_UNSPECIFIED)) @@ -717,17 +684,17 @@ BOM_UTF8 \357\273\277 // value (for token type MARKUP_FUNCTION or // MARKUP_LIST_FUNCTION). - push_extra_token(EXPECT_NO_MORE_ARGS); + push_extra_token (here_input (), EXPECT_NO_MORE_ARGS); s = scm_cdr(s); for (; scm_is_pair(s); s = scm_cdr(s)) { SCM predicate = scm_car(s); if (predicate == ly_lily_module_constant ("markup-list?")) - push_extra_token(EXPECT_MARKUP_LIST); + push_extra_token (here_input (), EXPECT_MARKUP_LIST); else if (predicate == ly_lily_module_constant ("markup?")) - push_extra_token(EXPECT_MARKUP); + push_extra_token (here_input (), EXPECT_MARKUP); else - push_extra_token(EXPECT_SCM, predicate); + push_extra_token (here_input (), EXPECT_SCM, predicate); } return token_type; } @@ -846,15 +813,25 @@ BOM_UTF8 \357\273\277 /* Make the lexer generate a token of the given type as the next token. TODO: make it possible to define a value for the token as well */ void -Lily_lexer::push_extra_token (int token_type, SCM scm) +Lily_lexer::push_extra_token (Input const &where, int token_type, SCM scm) +{ + extra_tokens_ = scm_cons (scm_cons2 (make_input (where), + scm_from_int (token_type), + scm), extra_tokens_); +} + +int +Lily_lexer::pop_extra_token () { if (scm_is_null (extra_tokens_)) - { - if (YY_START != extratoken) - hidden_state_ = YY_START; - yy_push_state (extratoken); - } - extra_tokens_ = scm_acons (scm_from_int (token_type), scm, extra_tokens_); + return -1; + + /* produce requested token */ + yylloc = *unsmob_input (scm_caar (extra_tokens_)); + int type = scm_to_int (scm_cadar (extra_tokens_)); + yylval = scm_cddar (extra_tokens_); + extra_tokens_ = scm_cdr (extra_tokens_); + return type; } void @@ -895,32 +872,17 @@ Lily_lexer::push_markup_state () void Lily_lexer::push_note_state (SCM alist) { - bool extra = (YYSTATE == extratoken); - SCM p = scm_assq (alist, pitchname_tab_stack_); - if (extra) - yy_pop_state (); - if (scm_is_false (p)) p = scm_cons (alist, alist_to_hashq (alist)); pitchname_tab_stack_ = scm_cons (p, pitchname_tab_stack_); yy_push_state (notes); - - if (extra) { - hidden_state_ = YYSTATE; - yy_push_state (extratoken); - } } void Lily_lexer::pop_state () { - bool extra = (YYSTATE == extratoken); - - if (extra) - yy_pop_state (); - if (YYSTATE == notes || YYSTATE == chords) pitchname_tab_stack_ = scm_cdr (pitchname_tab_stack_); @@ -928,10 +890,6 @@ Lily_lexer::pop_state () if (YYSTATE != maininput) yy_pop_state (); - if (extra) { - hidden_state_ = YYSTATE; - yy_push_state (extratoken); - } } int @@ -1017,7 +975,7 @@ Lily_lexer::scan_scm_id (SCM sid) funtype = SCM_FUNCTION; else programming_error ("Bad syntax function predicate"); - push_extra_token (EXPECT_NO_MORE_ARGS); + push_extra_token (here_input (), EXPECT_NO_MORE_ARGS); for (s = scm_cdr (s); scm_is_pair (s); s = scm_cdr (s)) { SCM optional = SCM_UNDEFINED; @@ -1030,14 +988,14 @@ Lily_lexer::scan_scm_id (SCM sid) } if (ly_is_procedure (cs)) - push_extra_token (EXPECT_SCM, cs); + push_extra_token (here_input (), EXPECT_SCM, cs); else { programming_error ("Function parameter without type-checking predicate"); continue; } if (!scm_is_eq (optional, SCM_UNDEFINED)) - push_extra_token (EXPECT_OPTIONAL, optional); + push_extra_token (here_input (), EXPECT_OPTIONAL, optional); } return funtype; } @@ -1075,10 +1033,7 @@ Lily_lexer::scan_bare_word (const string &str) int Lily_lexer::get_state () const { - if (YY_START == extratoken) - return hidden_state_; - else - return YY_START; + return YY_START; } bool @@ -1113,14 +1068,14 @@ Lily_lexer::is_figure_state () const // this function is private. SCM -Lily_lexer::eval_scm (SCM readerdata, char extra_token) +Lily_lexer::eval_scm (SCM readerdata, Input hi, char extra_token) { SCM sval = SCM_UNDEFINED; if (!SCM_UNBNDP (readerdata)) { - sval = ly_eval_scm (scm_car (readerdata), - *unsmob_input (scm_cdr (readerdata)), + sval = ly_eval_scm (readerdata, + hi, be_safe_global && is_main_input_, parser_); } @@ -1152,10 +1107,12 @@ Lily_lexer::eval_scm (SCM readerdata, char extra_token) case '$': token = scan_scm_id (v); if (!scm_is_eq (yylval, SCM_UNSPECIFIED)) - push_extra_token (token, yylval); + push_extra_token (here_input (), + token, yylval); break; case '#': - push_extra_token (SCM_IDENTIFIER, v); + push_extra_token (here_input (), + SCM_IDENTIFIER, v); break; } }