diff options
Diffstat (limited to 'contrib/groff/refer/label.cc')
| -rw-r--r-- | contrib/groff/refer/label.cc | 1602 |
1 files changed, 0 insertions, 1602 deletions
diff --git a/contrib/groff/refer/label.cc b/contrib/groff/refer/label.cc deleted file mode 100644 index c6dc07c..0000000 --- a/contrib/groff/refer/label.cc +++ /dev/null @@ -1,1602 +0,0 @@ -#ifndef lint -/*static char yysccsid[] = "from: @(#)yaccpar 1.9 (Berkeley) 02/21/93";*/ -static char yyrcsid[] = "$Id: label.cc,v 1.2 2000/02/28 11:02:12 wlemb Exp $"; -#endif -#define YYBYACC 1 -#define YYMAJOR 1 -#define YYMINOR 9 -#define yyclearin (yychar=(-1)) -#define yyerrok (yyerrflag=0) -#define YYRECOVERING (yyerrflag!=0) -#define YYPREFIX "yy" -#line 22 "label.y" - -#include "refer.h" -#include "refid.h" -#include "ref.h" -#include "token.h" - -int yylex(); -void yyerror(const char *); -int yyparse(); - -static const char *format_serial(char c, int n); - -struct label_info { - int start; - int length; - int count; - int total; - label_info(const string &); -}; - -label_info *lookup_label(const string &label); - -struct expression { - enum { - /* Does the tentative label depend on the reference?*/ - CONTAINS_VARIABLE = 01, - CONTAINS_STAR = 02, - CONTAINS_FORMAT = 04, - CONTAINS_AT = 010 - }; - virtual ~expression() { } - virtual void evaluate(int, const reference &, string &, - substring_position &) = 0; - virtual unsigned analyze() { return 0; } -}; - -class at_expr : public expression { -public: - at_expr() { } - void evaluate(int, const reference &, string &, substring_position &); - unsigned analyze() { return CONTAINS_VARIABLE|CONTAINS_AT; } -}; - -class format_expr : public expression { - char type; - int width; - int first_number; -public: - format_expr(char c, int w = 0, int f = 1) - : type(c), width(w), first_number(f) { } - void evaluate(int, const reference &, string &, substring_position &); - unsigned analyze() { return CONTAINS_FORMAT; } -}; - -class field_expr : public expression { - int number; - char name; -public: - field_expr(char nm, int num) : number(num), name(nm) { } - void evaluate(int, const reference &, string &, substring_position &); - unsigned analyze() { return CONTAINS_VARIABLE; } -}; - -class literal_expr : public expression { - string s; -public: - literal_expr(const char *ptr, int len) : s(ptr, len) { } - void evaluate(int, const reference &, string &, substring_position &); -}; - -class unary_expr : public expression { -protected: - expression *expr; -public: - unary_expr(expression *e) : expr(e) { } - ~unary_expr() { delete expr; } - void evaluate(int, const reference &, string &, substring_position &) = 0; - unsigned analyze() { return expr ? expr->analyze() : 0; } -}; - -/* This caches the analysis of an expression.*/ - -class analyzed_expr : public unary_expr { - unsigned flags; -public: - analyzed_expr(expression *); - void evaluate(int, const reference &, string &, substring_position &); - unsigned analyze() { return flags; } -}; - -class star_expr : public unary_expr { -public: - star_expr(expression *e) : unary_expr(e) { } - void evaluate(int, const reference &, string &, substring_position &); - unsigned analyze() { - return ((expr ? (expr->analyze() & ~CONTAINS_VARIABLE) : 0) - | CONTAINS_STAR); - } -}; - -typedef void map_func(const char *, const char *, string &); - -class map_expr : public unary_expr { - map_func *func; -public: - map_expr(expression *e, map_func *f) : unary_expr(e), func(f) { } - void evaluate(int, const reference &, string &, substring_position &); -}; - -typedef const char *extractor_func(const char *, const char *, const char **); - -class extractor_expr : public unary_expr { - int part; - extractor_func *func; -public: - enum { BEFORE = +1, MATCH = 0, AFTER = -1 }; - extractor_expr(expression *e, extractor_func *f, int pt) - : unary_expr(e), part(pt), func(f) { } - void evaluate(int, const reference &, string &, substring_position &); -}; - -class truncate_expr : public unary_expr { - int n; -public: - truncate_expr(expression *e, int i) : unary_expr(e), n(i) { } - void evaluate(int, const reference &, string &, substring_position &); -}; - -class separator_expr : public unary_expr { -public: - separator_expr(expression *e) : unary_expr(e) { } - void evaluate(int, const reference &, string &, substring_position &); -}; - -class binary_expr : public expression { -protected: - expression *expr1; - expression *expr2; -public: - binary_expr(expression *e1, expression *e2) : expr1(e1), expr2(e2) { } - ~binary_expr() { delete expr1; delete expr2; } - void evaluate(int, const reference &, string &, substring_position &) = 0; - unsigned analyze() { - return (expr1 ? expr1->analyze() : 0) | (expr2 ? expr2->analyze() : 0); - } -}; - -class alternative_expr : public binary_expr { -public: - alternative_expr(expression *e1, expression *e2) : binary_expr(e1, e2) { } - void evaluate(int, const reference &, string &, substring_position &); -}; - -class list_expr : public binary_expr { -public: - list_expr(expression *e1, expression *e2) : binary_expr(e1, e2) { } - void evaluate(int, const reference &, string &, substring_position &); -}; - -class substitute_expr : public binary_expr { -public: - substitute_expr(expression *e1, expression *e2) : binary_expr(e1, e2) { } - void evaluate(int, const reference &, string &, substring_position &); -}; - -class ternary_expr : public expression { -protected: - expression *expr1; - expression *expr2; - expression *expr3; -public: - ternary_expr(expression *e1, expression *e2, expression *e3) - : expr1(e1), expr2(e2), expr3(e3) { } - ~ternary_expr() { delete expr1; delete expr2; delete expr3; } - void evaluate(int, const reference &, string &, substring_position &) = 0; - unsigned analyze() { - return ((expr1 ? expr1->analyze() : 0) - | (expr2 ? expr2->analyze() : 0) - | (expr3 ? expr3->analyze() : 0)); - } -}; - -class conditional_expr : public ternary_expr { -public: - conditional_expr(expression *e1, expression *e2, expression *e3) - : ternary_expr(e1, e2, e3) { } - void evaluate(int, const reference &, string &, substring_position &); -}; - -static expression *parsed_label = 0; -static expression *parsed_date_label = 0; -static expression *parsed_short_label = 0; - -static expression *parse_result; - -string literals; - -#line 221 "label.y" -typedef union { - int num; - expression *expr; - struct { int ndigits; int val; } dig; - struct { int start; int len; } str; -} YYSTYPE; -#line 218 "y.tab.c" -#define TOKEN_LETTER 257 -#define TOKEN_LITERAL 258 -#define TOKEN_DIGIT 259 -#define YYERRCODE 256 -short yylhs[] = { -1, - 0, 1, 1, 6, 6, 2, 2, 2, 3, 3, - 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, - 4, 4, 4, 4, 9, 9, 7, 7, 8, 8, - 10, 10, 10, -}; -short yylen[] = { 2, - 1, 1, 5, 0, 1, 1, 3, 3, 1, 2, - 1, 3, 1, 1, 1, 2, 2, 2, 5, 3, - 3, 2, 3, 3, 0, 1, 1, 2, 1, 2, - 0, 1, 1, -}; -short yydefred[] = { 0, - 0, 14, 13, 0, 0, 0, 0, 5, 0, 0, - 0, 0, 1, 27, 0, 17, 29, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 22, 0, 28, - 30, 23, 24, 0, 0, 0, 32, 33, 0, 0, - 0, 0, 0, 0, 3, 0, 19, -}; -short yydgoto[] = { 7, - 8, 9, 10, 11, 12, 13, 15, 18, 47, 39, -}; -short yysindex[] = { -32, - -257, 0, 0, -240, -32, -32, 0, 0, -18, -32, - -36, -114, 0, 0, -246, 0, 0, -241, -14, -39, - -32, -32, -32, -114, -21, -257, -257, 0, -32, 0, - 0, 0, 0, -25, -32, -32, 0, 0, -223, -246, - -246, -36, -32, -257, 0, -246, 0, -}; -short yyrindex[] = { 35, - 1, 0, 0, 0, -5, -4, 0, 0, 14, 208, - 159, 224, 0, 0, 11, 0, 0, 40, 0, 0, - 2, 0, 0, 253, -220, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 263, 281, 0, 0, 0, 50, - 105, 214, 0, 115, 0, 149, 0, -}; -short yygindex[] = { 0, - 19, 0, 7, 37, -10, 10, -23, 0, 0, 0, -}; -#define YYTABLESIZE 511 -short yytable[] = { 24, - 15, 14, 40, 41, 4, 28, 26, 5, 27, 25, - 16, 29, 30, 2, 19, 20, 16, 31, 17, 23, - 46, 37, 33, 38, 24, 24, 32, 6, 35, 36, - 34, 3, 43, 44, 4, 4, 31, 15, 15, 18, - 15, 15, 15, 15, 21, 15, 15, 16, 16, 20, - 16, 16, 16, 16, 2, 16, 16, 4, 15, 4, - 15, 45, 15, 15, 15, 42, 0, 0, 16, 0, - 16, 2, 16, 16, 16, 2, 18, 18, 0, 18, - 18, 18, 18, 0, 18, 18, 20, 20, 0, 20, - 20, 20, 20, 0, 20, 20, 0, 18, 0, 18, - 0, 18, 18, 18, 21, 22, 0, 20, 0, 20, - 0, 20, 20, 20, 25, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 15, 0, 15, 0, 0, 0, - 0, 0, 0, 0, 16, 0, 16, 0, 0, 0, - 0, 21, 21, 0, 21, 21, 21, 21, 26, 21, - 21, 25, 25, 0, 25, 25, 25, 25, 11, 25, - 25, 0, 21, 18, 21, 18, 21, 21, 21, 0, - 0, 0, 25, 20, 25, 20, 25, 25, 25, 0, - 0, 0, 0, 0, 0, 26, 26, 0, 26, 26, - 26, 26, 0, 26, 26, 11, 11, 0, 11, 11, - 0, 0, 0, 0, 0, 0, 26, 6, 26, 0, - 26, 26, 26, 12, 0, 0, 11, 0, 11, 0, - 11, 11, 11, 9, 1, 2, 0, 0, 21, 0, - 21, 0, 0, 0, 0, 0, 0, 0, 25, 0, - 25, 0, 0, 0, 0, 6, 0, 0, 6, 0, - 12, 12, 10, 12, 12, 0, 0, 15, 15, 0, - 9, 9, 7, 9, 9, 6, 0, 16, 16, 6, - 6, 12, 26, 12, 26, 12, 12, 12, 0, 0, - 8, 9, 11, 9, 11, 9, 9, 9, 0, 10, - 10, 0, 10, 10, 0, 0, 18, 18, 0, 0, - 7, 0, 0, 7, 0, 0, 20, 20, 0, 0, - 10, 0, 10, 0, 10, 10, 10, 0, 8, 0, - 7, 8, 0, 0, 7, 7, 0, 0, 0, 0, - 0, 6, 0, 0, 0, 0, 0, 12, 8, 12, - 0, 0, 8, 8, 0, 0, 0, 9, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 21, 21, 0, 0, 0, 0, 0, 0, 0, - 0, 25, 25, 0, 0, 0, 10, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 8, 26, 26, 0, 0, 0, - 0, 0, 0, 0, 0, 11, 11, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 12, 12, 0, 0, 0, 0, 0, 0, 0, 0, - 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, - 10, -}; -short yycheck[] = { 10, - 0, 259, 26, 27, 37, 42, 43, 40, 45, 46, - 0, 126, 259, 0, 5, 6, 257, 259, 259, 38, - 44, 43, 62, 45, 35, 36, 41, 60, 22, 23, - 21, 64, 58, 257, 0, 41, 257, 37, 38, 0, - 40, 41, 42, 43, 63, 45, 46, 37, 38, 0, - 40, 41, 42, 43, 41, 45, 46, 62, 58, 58, - 60, 43, 62, 63, 64, 29, -1, -1, 58, -1, - 60, 58, 62, 63, 64, 62, 37, 38, -1, 40, - 41, 42, 43, -1, 45, 46, 37, 38, -1, 40, - 41, 42, 43, -1, 45, 46, -1, 58, -1, 60, - -1, 62, 63, 64, 0, 124, -1, 58, -1, 60, - -1, 62, 63, 64, 0, -1, -1, -1, -1, -1, - -1, -1, -1, -1, 124, -1, 126, -1, -1, -1, - -1, -1, -1, -1, 124, -1, 126, -1, -1, -1, - -1, 37, 38, -1, 40, 41, 42, 43, 0, 45, - 46, 37, 38, -1, 40, 41, 42, 43, 0, 45, - 46, -1, 58, 124, 60, 126, 62, 63, 64, -1, - -1, -1, 58, 124, 60, 126, 62, 63, 64, -1, - -1, -1, -1, -1, -1, 37, 38, -1, 40, 41, - 42, 43, -1, 45, 46, 37, 38, -1, 40, 41, - -1, -1, -1, -1, -1, -1, 58, 0, 60, -1, - 62, 63, 64, 0, -1, -1, 58, -1, 60, -1, - 62, 63, 64, 0, 257, 258, -1, -1, 124, -1, - 126, -1, -1, -1, -1, -1, -1, -1, 124, -1, - 126, -1, -1, -1, -1, 38, -1, -1, 41, -1, - 37, 38, 0, 40, 41, -1, -1, 257, 258, -1, - 37, 38, 0, 40, 41, 58, -1, 257, 258, 62, - 63, 58, 124, 60, 126, 62, 63, 64, -1, -1, - 0, 58, 124, 60, 126, 62, 63, 64, -1, 37, - 38, -1, 40, 41, -1, -1, 257, 258, -1, -1, - 38, -1, -1, 41, -1, -1, 257, 258, -1, -1, - 58, -1, 60, -1, 62, 63, 64, -1, 38, -1, - 58, 41, -1, -1, 62, 63, -1, -1, -1, -1, - -1, 124, -1, -1, -1, -1, -1, 124, 58, 126, - -1, -1, 62, 63, -1, -1, -1, 124, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, 257, 258, -1, -1, -1, -1, -1, -1, -1, - -1, 257, 258, -1, -1, -1, 124, -1, -1, -1, - -1, -1, -1, -1, -1, -1, 124, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, 124, 257, 258, -1, -1, -1, - -1, -1, -1, -1, -1, 257, 258, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - 257, 258, -1, -1, -1, -1, -1, -1, -1, -1, - 257, 258, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, 257, - 258, -}; -#define YYFINAL 7 -#ifndef YYDEBUG -#define YYDEBUG 0 -#endif -#define YYMAXTOKEN 259 -#if YYDEBUG -char *yyname[] = { -"end-of-file",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, -0,0,0,"'%'","'&'",0,"'('","')'","'*'","'+'",0,"'-'","'.'",0,0,0,0,0,0,0,0,0,0,0, -"':'",0,"'<'",0,"'>'","'?'","'@'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, -0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"'|'",0, -"'~'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, -0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, -0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, -0,0,0,0,0,0,0,0,0,0,0,0,0,"TOKEN_LETTER","TOKEN_LITERAL","TOKEN_DIGIT", -}; -char *yyrule[] = { -"$accept : expr", -"expr : optional_conditional", -"conditional : alternative", -"conditional : alternative '?' optional_conditional ':' conditional", -"optional_conditional :", -"optional_conditional : conditional", -"alternative : list", -"alternative : alternative '|' list", -"alternative : alternative '&' list", -"list : substitute", -"list : list substitute", -"substitute : string", -"substitute : substitute '~' string", -"string : '@'", -"string : TOKEN_LITERAL", -"string : TOKEN_LETTER", -"string : TOKEN_LETTER number", -"string : '%' TOKEN_LETTER", -"string : '%' digits", -"string : string '.' flag TOKEN_LETTER optional_number", -"string : string '+' number", -"string : string '-' number", -"string : string '*'", -"string : '(' optional_conditional ')'", -"string : '<' optional_conditional '>'", -"optional_number :", -"optional_number : number", -"number : TOKEN_DIGIT", -"number : number TOKEN_DIGIT", -"digits : TOKEN_DIGIT", -"digits : digits TOKEN_DIGIT", -"flag :", -"flag : '+'", -"flag : '-'", -}; -#endif -#ifdef YYSTACKSIZE -#undef YYMAXDEPTH -#define YYMAXDEPTH YYSTACKSIZE -#else -#ifdef YYMAXDEPTH -#define YYSTACKSIZE YYMAXDEPTH -#else -#define YYSTACKSIZE 500 -#define YYMAXDEPTH 500 -#endif -#endif -int yydebug; -int yynerrs; -int yyerrflag; -int yychar; -short *yyssp; -YYSTYPE *yyvsp; -YYSTYPE yyval; -YYSTYPE yylval; -short yyss[YYSTACKSIZE]; -YYSTYPE yyvs[YYSTACKSIZE]; -#define yystacksize YYSTACKSIZE -#line 397 "label.y" - -/* bison defines const to be empty unless __STDC__ is defined, which it -isn't under cfront */ - -#ifdef const -#undef const -#endif - -const char *spec_ptr; -const char *spec_end; -const char *spec_cur; - -int yylex() -{ - while (spec_ptr < spec_end && csspace(*spec_ptr)) - spec_ptr++; - spec_cur = spec_ptr; - if (spec_ptr >= spec_end) - return 0; - unsigned char c = *spec_ptr++; - if (csalpha(c)) { - yylval.num = c; - return TOKEN_LETTER; - } - if (csdigit(c)) { - yylval.num = c - '0'; - return TOKEN_DIGIT; - } - if (c == '\'') { - yylval.str.start = literals.length(); - for (; spec_ptr < spec_end; spec_ptr++) { - if (*spec_ptr == '\'') { - if (++spec_ptr < spec_end && *spec_ptr == '\'') - literals += '\''; - else { - yylval.str.len = literals.length() - yylval.str.start; - return TOKEN_LITERAL; - } - } - else - literals += *spec_ptr; - } - yylval.str.len = literals.length() - yylval.str.start; - return TOKEN_LITERAL; - } - return c; -} - -int set_label_spec(const char *label_spec) -{ - spec_cur = spec_ptr = label_spec; - spec_end = strchr(label_spec, '\0'); - literals.clear(); - if (yyparse()) - return 0; - delete parsed_label; - parsed_label = parse_result; - return 1; -} - -int set_date_label_spec(const char *label_spec) -{ - spec_cur = spec_ptr = label_spec; - spec_end = strchr(label_spec, '\0'); - literals.clear(); - if (yyparse()) - return 0; - delete parsed_date_label; - parsed_date_label = parse_result; - return 1; -} - -int set_short_label_spec(const char *label_spec) -{ - spec_cur = spec_ptr = label_spec; - spec_end = strchr(label_spec, '\0'); - literals.clear(); - if (yyparse()) - return 0; - delete parsed_short_label; - parsed_short_label = parse_result; - return 1; -} - -void yyerror(const char *message) -{ - if (spec_cur < spec_end) - command_error("label specification %1 before `%2'", message, spec_cur); - else - command_error("label specification %1 at end of string", - message, spec_cur); -} - -void at_expr::evaluate(int tentative, const reference &ref, - string &result, substring_position &) -{ - if (tentative) - ref.canonicalize_authors(result); - else { - const char *end, *start = ref.get_authors(&end); - if (start) - result.append(start, end - start); - } -} - -void format_expr::evaluate(int tentative, const reference &ref, - string &result, substring_position &) -{ - if (tentative) - return; - const label_info *lp = ref.get_label_ptr(); - int num = lp == 0 ? ref.get_number() : lp->count; - if (type != '0') - result += format_serial(type, num + 1); - else { - const char *ptr = i_to_a(num + first_number); - int pad = width - strlen(ptr); - while (--pad >= 0) - result += '0'; - result += ptr; - } -} - -static const char *format_serial(char c, int n) -{ - assert(n > 0); - static char buf[128]; // more than enough. - switch (c) { - case 'i': - case 'I': - { - char *p = buf; - // troff uses z and w to represent 10000 and 5000 in Roman - // numerals; I can find no historical basis for this usage - const char *s = c == 'i' ? "zwmdclxvi" : "ZWMDCLXVI"; - if (n >= 40000) - return i_to_a(n); - while (n >= 10000) { - *p++ = s[0]; - n -= 10000; - } - for (int i = 1000; i > 0; i /= 10, s += 2) { - int m = n/i; - n -= m*i; - switch (m) { - case 3: - *p++ = s[2]; - /* falls through */ - case 2: - *p++ = s[2]; - /* falls through */ - case 1: - *p++ = s[2]; - break; - case 4: - *p++ = s[2]; - *p++ = s[1]; - break; - case 8: - *p++ = s[1]; - *p++ = s[2]; - *p++ = s[2]; - *p++ = s[2]; - break; - case 7: - *p++ = s[1]; - *p++ = s[2]; - *p++ = s[2]; - break; - case 6: - *p++ = s[1]; - *p++ = s[2]; - break; - case 5: - *p++ = s[1]; - break; - case 9: - *p++ = s[2]; - *p++ = s[0]; - } - } - *p = 0; - break; - } - case 'a': - case 'A': - { - char *p = buf; - // this is derived from troff/reg.c - while (n > 0) { - int d = n % 26; - if (d == 0) - d = 26; - n -= d; - n /= 26; - *p++ = c + d - 1; // ASCII dependent - } - *p-- = 0; - // Reverse it. - char *q = buf; - while (q < p) { - char temp = *q; - *q = *p; - *p = temp; - --p; - ++q; - } - break; - } - default: - assert(0); - } - return buf; -} - -void field_expr::evaluate(int, const reference &ref, - string &result, substring_position &) -{ - const char *end; - const char *start = ref.get_field(name, &end); - if (start) { - start = nth_field(number, start, &end); - if (start) - result.append(start, end - start); - } -} - -void literal_expr::evaluate(int, const reference &, - string &result, substring_position &) -{ - result += s; -} - -analyzed_expr::analyzed_expr(expression *e) -: unary_expr(e), flags(e ? e->analyze() : 0) -{ -} - -void analyzed_expr::evaluate(int tentative, const reference &ref, - string &result, substring_position &pos) -{ - if (expr) - expr->evaluate(tentative, ref, result, pos); -} - -void star_expr::evaluate(int tentative, const reference &ref, - string &result, substring_position &pos) -{ - const label_info *lp = ref.get_label_ptr(); - if (!tentative - && (lp == 0 || lp->total > 1) - && expr) - expr->evaluate(tentative, ref, result, pos); -} - -void separator_expr::evaluate(int tentative, const reference &ref, - string &result, substring_position &pos) -{ - int start_length = result.length(); - int is_first = pos.start < 0; - if (expr) - expr->evaluate(tentative, ref, result, pos); - if (is_first) { - pos.start = start_length; - pos.length = result.length() - start_length; - } -} - -void map_expr::evaluate(int tentative, const reference &ref, - string &result, substring_position &) -{ - if (expr) { - string temp; - substring_position temp_pos; - expr->evaluate(tentative, ref, temp, temp_pos); - (*func)(temp.contents(), temp.contents() + temp.length(), result); - } -} - -void extractor_expr::evaluate(int tentative, const reference &ref, - string &result, substring_position &) -{ - if (expr) { - string temp; - substring_position temp_pos; - expr->evaluate(tentative, ref, temp, temp_pos); - const char *end, *start = (*func)(temp.contents(), - temp.contents() + temp.length(), - &end); - switch (part) { - case BEFORE: - if (start) - result.append(temp.contents(), start - temp.contents()); - else - result += temp; - break; - case MATCH: - if (start) - result.append(start, end - start); - break; - case AFTER: - if (start) - result.append(end, temp.contents() + temp.length() - end); - break; - default: - assert(0); - } - } -} - -static void first_part(int len, const char *ptr, const char *end, - string &result) -{ - for (;;) { - const char *token_start = ptr; - if (!get_token(&ptr, end)) - break; - const token_info *ti = lookup_token(token_start, ptr); - int counts = ti->sortify_non_empty(token_start, ptr); - if (counts && --len < 0) - break; - if (counts || ti->is_accent()) - result.append(token_start, ptr - token_start); - } -} - -static void last_part(int len, const char *ptr, const char *end, - string &result) -{ - const char *start = ptr; - int count = 0; - for (;;) { - const char *token_start = ptr; - if (!get_token(&ptr, end)) - break; - const token_info *ti = lookup_token(token_start, ptr); - if (ti->sortify_non_empty(token_start, ptr)) - count++; - } - ptr = start; - int skip = count - len; - if (skip > 0) { - for (;;) { - const char *token_start = ptr; - if (!get_token(&ptr, end)) - assert(0); - const token_info *ti = lookup_token(token_start, ptr); - if (ti->sortify_non_empty(token_start, ptr) && --skip < 0) { - ptr = token_start; - break; - } - } - } - first_part(len, ptr, end, result); -} - -void truncate_expr::evaluate(int tentative, const reference &ref, - string &result, substring_position &) -{ - if (expr) { - string temp; - substring_position temp_pos; - expr->evaluate(tentative, ref, temp, temp_pos); - const char *start = temp.contents(); - const char *end = start + temp.length(); - if (n > 0) - first_part(n, start, end, result); - else if (n < 0) - last_part(-n, start, end, result); - } -} - -void alternative_expr::evaluate(int tentative, const reference &ref, - string &result, substring_position &pos) -{ - int start_length = result.length(); - if (expr1) - expr1->evaluate(tentative, ref, result, pos); - if (result.length() == start_length && expr2) - expr2->evaluate(tentative, ref, result, pos); -} - -void list_expr::evaluate(int tentative, const reference &ref, - string &result, substring_position &pos) -{ - if (expr1) - expr1->evaluate(tentative, ref, result, pos); - if (expr2) - expr2->evaluate(tentative, ref, result, pos); -} - -void substitute_expr::evaluate(int tentative, const reference &ref, - string &result, substring_position &pos) -{ - int start_length = result.length(); - if (expr1) - expr1->evaluate(tentative, ref, result, pos); - if (result.length() > start_length && result[result.length() - 1] == '-') { - // ought to see if pos covers the - - result.set_length(result.length() - 1); - if (expr2) - expr2->evaluate(tentative, ref, result, pos); - } -} - -void conditional_expr::evaluate(int tentative, const reference &ref, - string &result, substring_position &pos) -{ - string temp; - substring_position temp_pos; - if (expr1) - expr1->evaluate(tentative, ref, temp, temp_pos); - if (temp.length() > 0) { - if (expr2) - expr2->evaluate(tentative, ref, result, pos); - } - else { - if (expr3) - expr3->evaluate(tentative, ref, result, pos); - } -} - -void reference::pre_compute_label() -{ - if (parsed_label != 0 - && (parsed_label->analyze() & expression::CONTAINS_VARIABLE)) { - label.clear(); - substring_position temp_pos; - parsed_label->evaluate(1, *this, label, temp_pos); - label_ptr = lookup_label(label); - } -} - -void reference::compute_label() -{ - label.clear(); - if (parsed_label) - parsed_label->evaluate(0, *this, label, separator_pos); - if (short_label_flag && parsed_short_label) - parsed_short_label->evaluate(0, *this, short_label, short_separator_pos); - if (date_as_label) { - string new_date; - if (parsed_date_label) { - substring_position temp_pos; - parsed_date_label->evaluate(0, *this, new_date, temp_pos); - } - set_date(new_date); - } - if (label_ptr) - label_ptr->count += 1; -} - -void reference::immediate_compute_label() -{ - if (label_ptr) - label_ptr->total = 2; // force use of disambiguator - compute_label(); -} - -int reference::merge_labels(reference **v, int n, label_type type, - string &result) -{ - if (abbreviate_label_ranges) - return merge_labels_by_number(v, n, type, result); - else - return merge_labels_by_parts(v, n, type, result); -} - -int reference::merge_labels_by_number(reference **v, int n, label_type type, - string &result) -{ - if (n <= 1) - return 0; - int num = get_number(); - // Only merge three or more labels. - if (v[0]->get_number() != num + 1 - || v[1]->get_number() != num + 2) - return 0; - int i; - for (i = 2; i < n; i++) - if (v[i]->get_number() != num + i + 1) - break; - result = get_label(type); - result += label_range_indicator; - result += v[i - 1]->get_label(type); - return i; -} - -const substring_position &reference::get_separator_pos(label_type type) const -{ - if (type == SHORT_LABEL && short_label_flag) - return short_separator_pos; - else - return separator_pos; -} - -const string &reference::get_label(label_type type) const -{ - if (type == SHORT_LABEL && short_label_flag) - return short_label; - else - return label; -} - -int reference::merge_labels_by_parts(reference **v, int n, label_type type, - string &result) -{ - if (n <= 0) - return 0; - const string &lb = get_label(type); - const substring_position &sp = get_separator_pos(type); - if (sp.start < 0 - || sp.start != v[0]->get_separator_pos(type).start - || memcmp(lb.contents(), v[0]->get_label(type).contents(), - sp.start) != 0) - return 0; - result = lb; - int i = 0; - do { - result += separate_label_second_parts; - const substring_position &s = v[i]->get_separator_pos(type); - int sep_end_pos = s.start + s.length; - result.append(v[i]->get_label(type).contents() + sep_end_pos, - v[i]->get_label(type).length() - sep_end_pos); - } while (++i < n - && sp.start == v[i]->get_separator_pos(type).start - && memcmp(lb.contents(), v[i]->get_label(type).contents(), - sp.start) == 0); - return i; -} - -string label_pool; - -label_info::label_info(const string &s) -: start(label_pool.length()), length(s.length()), count(0), total(1) -{ - label_pool += s; -} - -static label_info **label_table = 0; -static int label_table_size = 0; -static int label_table_used = 0; - -label_info *lookup_label(const string &label) -{ - if (label_table == 0) { - label_table = new label_info *[17]; - label_table_size = 17; - for (int i = 0; i < 17; i++) - label_table[i] = 0; - } - unsigned h = hash_string(label.contents(), label.length()) % label_table_size; - label_info **ptr; - for (ptr = label_table + h; - *ptr != 0; - (ptr == label_table) - ? (ptr = label_table + label_table_size - 1) - : ptr--) - if ((*ptr)->length == label.length() - && memcmp(label_pool.contents() + (*ptr)->start, label.contents(), - label.length()) == 0) { - (*ptr)->total += 1; - return *ptr; - } - label_info *result = *ptr = new label_info(label); - if (++label_table_used * 2 > label_table_size) { - // Rehash the table. - label_info **old_table = label_table; - int old_size = label_table_size; - label_table_size = next_size(label_table_size); - label_table = new label_info *[label_table_size]; - int i; - for (i = 0; i < label_table_size; i++) - label_table[i] = 0; - for (i = 0; i < old_size; i++) - if (old_table[i]) { - unsigned h = hash_string(label_pool.contents() + old_table[i]->start, - old_table[i]->length); - label_info **p; - for (p = label_table + (h % label_table_size); - *p != 0; - (p == label_table) - ? (p = label_table + label_table_size - 1) - : --p) - ; - *p = old_table[i]; - } - a_delete old_table; - } - return result; -} - -void clear_labels() -{ - for (int i = 0; i < label_table_size; i++) { - delete label_table[i]; - label_table[i] = 0; - } - label_table_used = 0; - label_pool.clear(); -} - -static void consider_authors(reference **start, reference **end, int i); - -void compute_labels(reference **v, int n) -{ - if (parsed_label - && (parsed_label->analyze() & expression::CONTAINS_AT) - && sort_fields.length() >= 2 - && sort_fields[0] == 'A' - && sort_fields[1] == '+') - consider_authors(v, v + n, 0); - for (int i = 0; i < n; i++) - v[i]->compute_label(); -} - - -/* A reference with a list of authors <A0,A1,...,AN> _needs_ author i -where 0 <= i <= N if there exists a reference with a list of authors -<B0,B1,...,BM> such that <A0,A1,...,AN> != <B0,B1,...,BM> and M >= i -and Aj = Bj for 0 <= j < i. In this case if we can't say ``A0, -A1,...,A(i-1) et al'' because this would match both <A0,A1,...,AN> and -<B0,B1,...,BM>. If a reference needs author i we only have to call -need_author(j) for some j >= i such that the reference also needs -author j. */ - -/* This function handles 2 tasks: -determine which authors are needed (cannot be elided with et al.); -determine which authors can have only last names in the labels. - -References >= start and < end have the same first i author names. -Also they're sorted by A+. */ - -static void consider_authors(reference **start, reference **end, int i) -{ - if (start >= end) - return; - reference **p = start; - if (i >= (*p)->get_nauthors()) { - for (++p; p < end && i >= (*p)->get_nauthors(); p++) - ; - if (p < end && i > 0) { - // If we have an author list <A B C> and an author list <A B C D>, - // then both lists need C. - for (reference **q = start; q < end; q++) - (*q)->need_author(i - 1); - } - start = p; - } - while (p < end) { - reference **last_name_start = p; - reference **name_start = p; - for (++p; - p < end && i < (*p)->get_nauthors() - && same_author_last_name(**last_name_start, **p, i); - p++) { - if (!same_author_name(**name_start, **p, i)) { - consider_authors(name_start, p, i + 1); - name_start = p; - } - } - consider_authors(name_start, p, i + 1); - if (last_name_start == name_start) { - for (reference **q = last_name_start; q < p; q++) - (*q)->set_last_name_unambiguous(i); - } - // If we have an author list <A B C D> and <A B C E>, then the lists - // need author D and E respectively. - if (name_start > start || p < end) { - for (reference **q = last_name_start; q < p; q++) - (*q)->need_author(i); - } - } -} - -int same_author_last_name(const reference &r1, const reference &r2, int n) -{ - const char *ae1; - const char *as1 = r1.get_sort_field(0, n, 0, &ae1); - assert(as1 != 0); - const char *ae2; - const char *as2 = r2.get_sort_field(0, n, 0, &ae2); - assert(as2 != 0); - return ae1 - as1 == ae2 - as2 && memcmp(as1, as2, ae1 - as1) == 0; -} - -int same_author_name(const reference &r1, const reference &r2, int n) -{ - const char *ae1; - const char *as1 = r1.get_sort_field(0, n, -1, &ae1); - assert(as1 != 0); - const char *ae2; - const char *as2 = r2.get_sort_field(0, n, -1, &ae2); - assert(as2 != 0); - return ae1 - as1 == ae2 - as2 && memcmp(as1, as2, ae1 - as1) == 0; -} - - -void int_set::set(int i) -{ - assert(i >= 0); - int bytei = i >> 3; - if (bytei >= v.length()) { - int old_length = v.length(); - v.set_length(bytei + 1); - for (int j = old_length; j <= bytei; j++) - v[j] = 0; - } - v[bytei] |= 1 << (i & 7); -} - -int int_set::get(int i) const -{ - assert(i >= 0); - int bytei = i >> 3; - return bytei >= v.length() ? 0 : (v[bytei] & (1 << (i & 7))) != 0; -} - -void reference::set_last_name_unambiguous(int i) -{ - last_name_unambiguous.set(i); -} - -void reference::need_author(int n) -{ - if (n > last_needed_author) - last_needed_author = n; -} - -const char *reference::get_authors(const char **end) const -{ - if (!computed_authors) { - ((reference *)this)->computed_authors = 1; - string &result = ((reference *)this)->authors; - int na = get_nauthors(); - result.clear(); - for (int i = 0; i < na; i++) { - if (last_name_unambiguous.get(i)) { - const char *e, *start = get_author_last_name(i, &e); - assert(start != 0); - result.append(start, e - start); - } - else { - const char *e, *start = get_author(i, &e); - assert(start != 0); - result.append(start, e - start); - } - if (i == last_needed_author - && et_al.length() > 0 - && et_al_min_elide > 0 - && last_needed_author + et_al_min_elide < na - && na >= et_al_min_total) { - result += et_al; - break; - } - if (i < na - 1) { - if (na == 2) - result += join_authors_exactly_two; - else if (i < na - 2) - result += join_authors_default; - else - result += join_authors_last_two; - } - } - } - const char *start = authors.contents(); - *end = start + authors.length(); - return start; -} - -int reference::get_nauthors() const -{ - if (nauthors < 0) { - const char *dummy; - int na; - for (na = 0; get_author(na, &dummy) != 0; na++) - ; - ((reference *)this)->nauthors = na; - } - return nauthors; -} -#line 1228 "y.tab.c" -#define YYABORT goto yyabort -#define YYREJECT goto yyabort -#define YYACCEPT goto yyaccept -#define YYERROR goto yyerrlab -int -#if defined(__STDC__) -yyparse(void) -#else -yyparse() -#endif -{ - register int yym, yyn, yystate; -#if YYDEBUG - register char *yys; - extern char *getenv(); - - if (yys = getenv("YYDEBUG")) - { - yyn = *yys; - if (yyn >= '0' && yyn <= '9') - yydebug = yyn - '0'; - } -#endif - - yynerrs = 0; - yyerrflag = 0; - yychar = (-1); - - yyssp = yyss; - yyvsp = yyvs; - *yyssp = yystate = 0; - -yyloop: - if ((yyn = yydefred[yystate]) != 0) goto yyreduce; - if (yychar < 0) - { - if ((yychar = yylex()) < 0) yychar = 0; -#if YYDEBUG - if (yydebug) - { - yys = 0; - if (yychar <= YYMAXTOKEN) yys = yyname[yychar]; - if (!yys) yys = "illegal-symbol"; - printf("%sdebug: state %d, reading %d (%s)\n", - YYPREFIX, yystate, yychar, yys); - } -#endif - } - if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 && - yyn <= YYTABLESIZE && yycheck[yyn] == yychar) - { -#if YYDEBUG - if (yydebug) - printf("%sdebug: state %d, shifting to state %d\n", - YYPREFIX, yystate, yytable[yyn]); -#endif - if (yyssp >= yyss + yystacksize - 1) - { - goto yyoverflow; - } - *++yyssp = yystate = yytable[yyn]; - *++yyvsp = yylval; - yychar = (-1); - if (yyerrflag > 0) --yyerrflag; - goto yyloop; - } - if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 && - yyn <= YYTABLESIZE && yycheck[yyn] == yychar) - { - yyn = yytable[yyn]; - goto yyreduce; - } - if (yyerrflag) goto yyinrecovery; - yyerror("syntax error"); -#ifdef lint - goto yyerrlab; -#endif -yyerrlab: - ++yynerrs; -yyinrecovery: - if (yyerrflag < 3) - { - yyerrflag = 3; - for (;;) - { - if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE) >= 0 && - yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE) - { -#if YYDEBUG - if (yydebug) - printf("%sdebug: state %d, error recovery shifting\ - to state %d\n", YYPREFIX, *yyssp, yytable[yyn]); -#endif - if (yyssp >= yyss + yystacksize - 1) - { - goto yyoverflow; - } - *++yyssp = yystate = yytable[yyn]; - *++yyvsp = yylval; - goto yyloop; - } - else - { -#if YYDEBUG - if (yydebug) - printf("%sdebug: error recovery discarding state %d\n", - YYPREFIX, *yyssp); -#endif - if (yyssp <= yyss) goto yyabort; - --yyssp; - --yyvsp; - } - } - } - else - { - if (yychar == 0) goto yyabort; -#if YYDEBUG - if (yydebug) - { - yys = 0; - if (yychar <= YYMAXTOKEN) yys = yyname[yychar]; - if (!yys) yys = "illegal-symbol"; - printf("%sdebug: state %d, error recovery discards token %d (%s)\n", - YYPREFIX, yystate, yychar, yys); - } -#endif - yychar = (-1); - goto yyloop; - } -yyreduce: -#if YYDEBUG - if (yydebug) - printf("%sdebug: state %d, reducing by rule %d (%s)\n", - YYPREFIX, yystate, yyn, yyrule[yyn]); -#endif - yym = yylen[yyn]; - yyval = yyvsp[1-yym]; - switch (yyn) - { -case 1: -#line 250 "label.y" -{ parse_result = (yyvsp[0].expr ? new analyzed_expr(yyvsp[0].expr) : 0); } -break; -case 2: -#line 255 "label.y" -{ yyval.expr = yyvsp[0].expr; } -break; -case 3: -#line 257 "label.y" -{ yyval.expr = new conditional_expr(yyvsp[-4].expr, yyvsp[-2].expr, yyvsp[0].expr); } -break; -case 4: -#line 262 "label.y" -{ yyval.expr = 0; } -break; -case 5: -#line 264 "label.y" -{ yyval.expr = yyvsp[0].expr; } -break; -case 6: -#line 269 "label.y" -{ yyval.expr = yyvsp[0].expr; } -break; -case 7: -#line 271 "label.y" -{ yyval.expr = new alternative_expr(yyvsp[-2].expr, yyvsp[0].expr); } -break; -case 8: -#line 273 "label.y" -{ yyval.expr = new conditional_expr(yyvsp[-2].expr, yyvsp[0].expr, 0); } -break; -case 9: -#line 278 "label.y" -{ yyval.expr = yyvsp[0].expr; } -break; -case 10: -#line 280 "label.y" -{ yyval.expr = new list_expr(yyvsp[-1].expr, yyvsp[0].expr); } -break; -case 11: -#line 285 "label.y" -{ yyval.expr = yyvsp[0].expr; } -break; -case 12: -#line 287 "label.y" -{ yyval.expr = new substitute_expr(yyvsp[-2].expr, yyvsp[0].expr); } -break; -case 13: -#line 292 "label.y" -{ yyval.expr = new at_expr; } -break; -case 14: -#line 294 "label.y" -{ - yyval.expr = new literal_expr(literals.contents() + yyvsp[0].str.start, - yyvsp[0].str.len); - } -break; -case 15: -#line 299 "label.y" -{ yyval.expr = new field_expr(yyvsp[0].num, 0); } -break; -case 16: -#line 301 "label.y" -{ yyval.expr = new field_expr(yyvsp[-1].num, yyvsp[0].num - 1); } -break; -case 17: -#line 303 "label.y" -{ - switch (yyvsp[0].num) { - case 'I': - case 'i': - case 'A': - case 'a': - yyval.expr = new format_expr(yyvsp[0].num); - break; - default: - command_error("unrecognized format `%1'", char(yyvsp[0].num)); - yyval.expr = new format_expr('a'); - break; - } - } -break; -case 18: -#line 319 "label.y" -{ - yyval.expr = new format_expr('0', yyvsp[0].dig.ndigits, yyvsp[0].dig.val); - } -break; -case 19: -#line 323 "label.y" -{ - switch (yyvsp[-1].num) { - case 'l': - yyval.expr = new map_expr(yyvsp[-4].expr, lowercase); - break; - case 'u': - yyval.expr = new map_expr(yyvsp[-4].expr, uppercase); - break; - case 'c': - yyval.expr = new map_expr(yyvsp[-4].expr, capitalize); - break; - case 'r': - yyval.expr = new map_expr(yyvsp[-4].expr, reverse_name); - break; - case 'a': - yyval.expr = new map_expr(yyvsp[-4].expr, abbreviate_name); - break; - case 'y': - yyval.expr = new extractor_expr(yyvsp[-4].expr, find_year, yyvsp[-2].num); - break; - case 'n': - yyval.expr = new extractor_expr(yyvsp[-4].expr, find_last_name, yyvsp[-2].num); - break; - default: - yyval.expr = yyvsp[-4].expr; - command_error("unknown function `%1'", char(yyvsp[-1].num)); - break; - } - } -break; -case 20: -#line 354 "label.y" -{ yyval.expr = new truncate_expr(yyvsp[-2].expr, yyvsp[0].num); } -break; -case 21: -#line 356 "label.y" -{ yyval.expr = new truncate_expr(yyvsp[-2].expr, -yyvsp[0].num); } -break; -case 22: -#line 358 "label.y" -{ yyval.expr = new star_expr(yyvsp[-1].expr); } -break; -case 23: -#line 360 "label.y" -{ yyval.expr = yyvsp[-1].expr; } -break; -case 24: -#line 362 "label.y" -{ yyval.expr = new separator_expr(yyvsp[-1].expr); } -break; -case 25: -#line 367 "label.y" -{ yyval.num = -1; } -break; -case 26: -#line 369 "label.y" -{ yyval.num = yyvsp[0].num; } -break; -case 27: -#line 374 "label.y" -{ yyval.num = yyvsp[0].num; } -break; -case 28: -#line 376 "label.y" -{ yyval.num = yyvsp[-1].num*10 + yyvsp[0].num; } -break; -case 29: -#line 381 "label.y" -{ yyval.dig.ndigits = 1; yyval.dig.val = yyvsp[0].num; } -break; -case 30: -#line 383 "label.y" -{ yyval.dig.ndigits = yyvsp[-1].dig.ndigits + 1; yyval.dig.val = yyvsp[-1].dig.val*10 + yyvsp[0].num; } -break; -case 31: -#line 389 "label.y" -{ yyval.num = 0; } -break; -case 32: -#line 391 "label.y" -{ yyval.num = 1; } -break; -case 33: -#line 393 "label.y" -{ yyval.num = -1; } -break; -#line 1547 "y.tab.c" - } - yyssp -= yym; - yystate = *yyssp; - yyvsp -= yym; - yym = yylhs[yyn]; - if (yystate == 0 && yym == 0) - { -#if YYDEBUG - if (yydebug) - printf("%sdebug: after reduction, shifting from state 0 to\ - state %d\n", YYPREFIX, YYFINAL); -#endif - yystate = YYFINAL; - *++yyssp = YYFINAL; - *++yyvsp = yyval; - if (yychar < 0) - { - if ((yychar = yylex()) < 0) yychar = 0; -#if YYDEBUG - if (yydebug) - { - yys = 0; - if (yychar <= YYMAXTOKEN) yys = yyname[yychar]; - if (!yys) yys = "illegal-symbol"; - printf("%sdebug: state %d, reading %d (%s)\n", - YYPREFIX, YYFINAL, yychar, yys); - } -#endif - } - if (yychar == 0) goto yyaccept; - goto yyloop; - } - if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 && - yyn <= YYTABLESIZE && yycheck[yyn] == yystate) - yystate = yytable[yyn]; - else - yystate = yydgoto[yym]; -#if YYDEBUG - if (yydebug) - printf("%sdebug: after reduction, shifting from state %d \ -to state %d\n", YYPREFIX, *yyssp, yystate); -#endif - if (yyssp >= yyss + yystacksize - 1) - { - goto yyoverflow; - } - *++yyssp = yystate; - *++yyvsp = yyval; - goto yyloop; -yyoverflow: - yyerror("yacc stack overflow"); -yyabort: - return (1); -yyaccept: - return (0); -} |
