=================================================================== RCS file: /cvs/mandoc/Attic/macro.c,v retrieving revision 1.42 retrieving revision 1.73 diff -u -p -r1.42 -r1.73 --- mandoc/Attic/macro.c 2009/01/19 17:02:58 1.42 +++ mandoc/Attic/macro.c 2009/03/16 23:37:28 1.73 @@ -1,6 +1,6 @@ -/* $Id: macro.c,v 1.42 2009/01/19 17:02:58 kristaps Exp $ */ +/* $Id: macro.c,v 1.73 2009/03/16 23:37:28 kristaps Exp $ */ /* - * Copyright (c) 2008 Kristaps Dzonsons + * Copyright (c) 2008, 2009 Kristaps Dzonsons * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the @@ -21,56 +21,332 @@ #include #include #include -#ifdef __linux__ -#include -#endif #include "private.h" -/* FIXME: maxlineargs should be per LINE, no per TOKEN. */ +/* + * This has scanning/parsing routines, each of which extract a macro and + * its arguments and parameters, then know how to progress to the next + * macro. + */ -static int rewind_alt(int); -static int rewind_dohalt(int, enum mdoc_type, - const struct mdoc_node *); +/* FIXME: .Fl, .Ar, .Cd handling of `|'. */ + +enum mwarn { + WMACPARM, + WOBS +}; + +enum merr { + EOPEN, + EQUOT, + ENOCTX, + ENOPARMS +}; + #define REWIND_REWIND (1 << 0) #define REWIND_NOHALT (1 << 1) #define REWIND_HALT (1 << 2) -static int rewind_dobreak(int, const struct mdoc_node *); +static int obsolete(MACRO_PROT_ARGS); +static int blk_part_exp(MACRO_PROT_ARGS); +static int in_line_eoln(MACRO_PROT_ARGS); +static int in_line_argn(MACRO_PROT_ARGS); +static int in_line(MACRO_PROT_ARGS); +static int blk_full(MACRO_PROT_ARGS); +static int blk_exp_close(MACRO_PROT_ARGS); +static int blk_part_imp(MACRO_PROT_ARGS); -static int rewind_elem(struct mdoc *, int); -static int rewind_impblock(struct mdoc *, int, int, int); -static int rewind_expblock(struct mdoc *, int, int, int); -static int rewind_subblock(enum mdoc_type, +static int phrase(struct mdoc *, int, int, char *); +static int rew_dohalt(int, enum mdoc_type, + const struct mdoc_node *); +static int rew_alt(int); +static int rew_dobreak(int, const struct mdoc_node *); +static int rew_elem(struct mdoc *, int); +static int rew_impblock(struct mdoc *, int, int, int); +static int rew_expblock(struct mdoc *, int, int, int); +static int rew_subblock(enum mdoc_type, struct mdoc *, int, int, int); -static int rewind_last(struct mdoc *, struct mdoc_node *); +static int rew_last(struct mdoc *, struct mdoc_node *); static int append_delims(struct mdoc *, int, int *, char *); static int lookup(struct mdoc *, int, int, int, const char *); +static int pwarn(struct mdoc *, int, int, enum mwarn); +static int perr(struct mdoc *, int, int, enum merr); +static int swarn(struct mdoc *, enum mdoc_type, int, int, + const struct mdoc_node *); +#define nerr(m, n, t) perr((m), (n)->line, (n)->pos, (t)) +/* Central table of library: who gets parsed how. */ + +const struct mdoc_macro __mdoc_macros[MDOC_MAX] = { + { NULL, 0 }, /* \" */ + { in_line_eoln, MDOC_PROLOGUE }, /* Dd */ + { in_line_eoln, MDOC_PROLOGUE }, /* Dt */ + { in_line_eoln, MDOC_PROLOGUE }, /* Os */ + { blk_full, 0 }, /* Sh */ + { blk_full, 0 }, /* Ss */ + { in_line, 0 }, /* Pp */ + { blk_part_imp, MDOC_PARSED }, /* D1 */ + { blk_part_imp, MDOC_PARSED }, /* Dl */ + { blk_full, MDOC_EXPLICIT }, /* Bd */ + { blk_exp_close, MDOC_EXPLICIT }, /* Ed */ + { blk_full, MDOC_EXPLICIT }, /* Bl */ + { blk_exp_close, MDOC_EXPLICIT }, /* El */ + { blk_full, MDOC_PARSED }, /* It */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */ + { in_line, MDOC_PARSED }, /* An */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */ + { in_line_eoln, MDOC_CALLABLE }, /* Cd */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */ + { in_line_eoln, 0 }, /* Ex */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */ + { in_line_eoln, 0 }, /* Fd */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */ + { in_line, MDOC_PARSED }, /* Ft */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */ + { in_line_eoln, 0 }, /* In */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Li */ + { in_line_eoln, 0 }, /* Nd */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */ + { obsolete, 0 }, /* Ot */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */ + { in_line_eoln, 0 }, /* Rv */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */ + { in_line_eoln, 0 }, /* %A */ + { in_line_eoln, 0 }, /* %B */ + { in_line_eoln, 0 }, /* %D */ + { in_line_eoln, 0 }, /* %I */ + { in_line_eoln, 0 }, /* %J */ + { in_line_eoln, 0 }, /* %N */ + { in_line_eoln, 0 }, /* %O */ + { in_line_eoln, 0 }, /* %P */ + { in_line_eoln, 0 }, /* %R */ + { in_line_eoln, 0 }, /* %T */ + { in_line_eoln, 0 }, /* %V */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */ + { blk_full, MDOC_EXPLICIT }, /* Bf */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */ + { in_line_eoln, 0 }, /* Db */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */ + { blk_exp_close, MDOC_EXPLICIT }, /* Ef */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Em */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */ + { in_line, MDOC_PARSED }, /* Ms */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* No */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */ + { in_line_argn, MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */ + { blk_exp_close, MDOC_EXPLICIT }, /* Re */ + { blk_full, MDOC_EXPLICIT }, /* Rs */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */ + { in_line_eoln, 0 }, /* Sm */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ux */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */ + { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Fc */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */ + { blk_full, MDOC_EXPLICIT }, /* Bk */ + { blk_exp_close, MDOC_EXPLICIT }, /* Ek */ + { in_line_eoln, 0 }, /* Bt */ + { in_line_eoln, 0 }, /* Hf */ + { obsolete, 0 }, /* Fr */ + { in_line_eoln, 0 }, /* Ud */ + { in_line_eoln, 0 }, /* Lb */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ap */ + { in_line, 0 }, /* Lp */ + { in_line, MDOC_PARSED }, /* Lk */ + { in_line, MDOC_PARSED }, /* Mt */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Brq */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bro */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Brc */ + { in_line_eoln, 0 }, /* %C */ + { obsolete, 0 }, /* Es */ + { obsolete, 0 }, /* En */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */ +}; + +const struct mdoc_macro * const mdoc_macros = __mdoc_macros; + + static int +perr(struct mdoc *mdoc, int line, int pos, enum merr type) +{ + char *p; + + p = NULL; + switch (type) { + case (EOPEN): + p = "explicit scope still open on exit"; + break; + case (EQUOT): + p = "unterminated quotation"; + break; + case (ENOCTX): + p = "closure has no prior context"; + break; + case (ENOPARMS): + p = "unexpect line arguments"; + break; + } + assert(p); + return(mdoc_perr(mdoc, line, pos, p)); +} + + +static int +pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn type) +{ + char *p; + + p = NULL; + switch (type) { + case (WMACPARM): + p = "macro-like parameter"; + break; + case (WOBS): + p = "macro marked obsolete"; + break; + } + assert(p); + return(mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX, p)); +} + + +static int +swarn(struct mdoc *mdoc, enum mdoc_type type, + int line, int pos, const struct mdoc_node *p) +{ + const char *n, *t, *tt; + + n = t = ""; + tt = "block"; + + switch (type) { + case (MDOC_BODY): + tt = "multi-line"; + break; + case (MDOC_HEAD): + tt = "line"; + break; + default: + break; + } + + switch (p->type) { + case (MDOC_BLOCK): + n = mdoc_macronames[p->tok]; + t = "block"; + break; + case (MDOC_BODY): + n = mdoc_macronames[p->tok]; + t = "multi-line"; + break; + case (MDOC_HEAD): + n = mdoc_macronames[p->tok]; + t = "line"; + break; + default: + break; + } + + if ( ! (MDOC_IGN_SCOPE & mdoc->pflags)) + return(mdoc_perr(mdoc, line, pos, + "%s scope breaks %s scope of %s", + tt, t, n)); + return(mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX, + "%s scope breaks %s scope of %s", + tt, t, n)); +} + + +/* + * This is called at the end of parsing. It must traverse up the tree, + * closing out open [implicit] scopes. Obviously, open explicit scopes + * are errors. + */ +int +macro_end(struct mdoc *mdoc) +{ + struct mdoc_node *n; + + assert(mdoc->first); + assert(mdoc->last); + + /* Scan for open explicit scopes. */ + + n = MDOC_VALID & mdoc->last->flags ? + mdoc->last->parent : mdoc->last; + + for ( ; n; n = n->parent) { + if (MDOC_BLOCK != n->type) + continue; + if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags)) + continue; + return(nerr(mdoc, n, EOPEN)); + } + + return(rew_last(mdoc, mdoc->first)); +} + +static int lookup(struct mdoc *mdoc, int line, int pos, int from, const char *p) { int res; - res = mdoc_find(mdoc, p); + res = mdoc_tokhash_find(mdoc->htab, p); if (MDOC_PARSED & mdoc_macros[from].flags) return(res); if (MDOC_MAX == res) return(res); - if ( ! mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX, "macro-like parameter")) + if ( ! pwarn(mdoc, line, pos, WMACPARM)) return(-1); return(MDOC_MAX); } static int -rewind_last(struct mdoc *mdoc, struct mdoc_node *to) +rew_last(struct mdoc *mdoc, struct mdoc_node *to) { assert(to); mdoc->next = MDOC_NEXT_SIBLING; + /* LINTED */ while (mdoc->last != to) { if ( ! mdoc_valid_post(mdoc)) return(0); @@ -87,13 +363,15 @@ rewind_last(struct mdoc *mdoc, struct mdoc_node *to) static int -rewind_alt(int tok) +rew_alt(int tok) { switch (tok) { case (MDOC_Ac): return(MDOC_Ao); case (MDOC_Bc): return(MDOC_Bo); + case (MDOC_Brc): + return(MDOC_Bro); case (MDOC_Dc): return(MDOC_Do); case (MDOC_Ec): @@ -129,7 +407,7 @@ rewind_alt(int tok) static int -rewind_dohalt(int tok, enum mdoc_type type, const struct mdoc_node *p) +rew_dohalt(int tok, enum mdoc_type type, const struct mdoc_node *p) { if (MDOC_ROOT == p->type) @@ -143,6 +421,8 @@ rewind_dohalt(int tok, enum mdoc_type type, const stru /* FALLTHROUGH */ case (MDOC_Bq): /* FALLTHROUGH */ + case (MDOC_Brq): + /* FALLTHROUGH */ case (MDOC_D1): /* FALLTHROUGH */ case (MDOC_Dl): @@ -158,7 +438,7 @@ rewind_dohalt(int tok, enum mdoc_type type, const stru case (MDOC_Qq): /* FALLTHROUGH */ case (MDOC_Sq): - assert(MDOC_BODY != type); + assert(MDOC_HEAD != type); assert(MDOC_TAIL != type); if (type == p->type && tok == p->tok) return(REWIND_REWIND); @@ -197,6 +477,8 @@ rewind_dohalt(int tok, enum mdoc_type type, const stru /* FALLTHROUGH */ case (MDOC_Bo): /* FALLTHROUGH */ + case (MDOC_Bro): + /* FALLTHROUGH */ case (MDOC_Do): /* FALLTHROUGH */ case (MDOC_Eo): @@ -223,6 +505,8 @@ rewind_dohalt(int tok, enum mdoc_type type, const stru /* FALLTHROUGH */ case (MDOC_Bc): /* FALLTHROUGH */ + case (MDOC_Brc): + /* FALLTHROUGH */ case (MDOC_Dc): /* FALLTHROUGH */ case (MDOC_Ec): @@ -248,7 +532,7 @@ rewind_dohalt(int tok, enum mdoc_type type, const stru case (MDOC_Sc): /* FALLTHROUGH */ case (MDOC_Xc): - if (type == p->type && rewind_alt(tok) == p->tok) + if (type == p->type && rew_alt(tok) == p->tok) return(REWIND_REWIND); break; default: @@ -261,7 +545,7 @@ rewind_dohalt(int tok, enum mdoc_type type, const stru static int -rewind_dobreak(int tok, const struct mdoc_node *p) +rew_dobreak(int tok, const struct mdoc_node *p) { assert(MDOC_ROOT != p->type); @@ -293,7 +577,7 @@ rewind_dobreak(int tok, const struct mdoc_node *p) } if (MDOC_EXPLICIT & mdoc_macros[tok].flags) - return(p->tok == rewind_alt(tok)); + return(p->tok == rew_alt(tok)); else if (MDOC_BLOCK == p->type) return(1); @@ -302,7 +586,7 @@ rewind_dobreak(int tok, const struct mdoc_node *p) static int -rewind_elem(struct mdoc *mdoc, int tok) +rew_elem(struct mdoc *mdoc, int tok) { struct mdoc_node *n; @@ -312,12 +596,12 @@ rewind_elem(struct mdoc *mdoc, int tok) assert(MDOC_ELEM == n->type); assert(tok == n->tok); - return(rewind_last(mdoc, n)); + return(rew_last(mdoc, n)); } static int -rewind_subblock(enum mdoc_type type, struct mdoc *mdoc, +rew_subblock(enum mdoc_type type, struct mdoc *mdoc, int tok, int line, int ppos) { struct mdoc_node *n; @@ -325,64 +609,67 @@ rewind_subblock(enum mdoc_type type, struct mdoc *mdoc /* LINTED */ for (n = mdoc->last; n; n = n->parent) { - c = rewind_dohalt(tok, type, n); + c = rew_dohalt(tok, type, n); if (REWIND_HALT == c) return(1); if (REWIND_REWIND == c) break; - else if (rewind_dobreak(tok, n)) + else if (rew_dobreak(tok, n)) continue; - return(mdoc_perr(mdoc, line, ppos, "scope breaks prior %s", mdoc_node2a(n))); + if ( ! swarn(mdoc, type, line, ppos, n)) + return(0); } assert(n); - return(rewind_last(mdoc, n)); + return(rew_last(mdoc, n)); } static int -rewind_expblock(struct mdoc *mdoc, int tok, int line, int ppos) +rew_expblock(struct mdoc *mdoc, int tok, int line, int ppos) { struct mdoc_node *n; int c; /* LINTED */ for (n = mdoc->last; n; n = n->parent) { - c = rewind_dohalt(tok, MDOC_BLOCK, n); + c = rew_dohalt(tok, MDOC_BLOCK, n); if (REWIND_HALT == c) - return(mdoc_perr(mdoc, line, ppos, "closing macro has no context")); + return(perr(mdoc, line, ppos, ENOCTX)); if (REWIND_REWIND == c) break; - else if (rewind_dobreak(tok, n)) + else if (rew_dobreak(tok, n)) continue; - return(mdoc_perr(mdoc, line, ppos, "scope breaks prior %s", mdoc_node2a(n))); + if ( ! swarn(mdoc, MDOC_BLOCK, line, ppos, n)) + return(0); } assert(n); - return(rewind_last(mdoc, n)); + return(rew_last(mdoc, n)); } static int -rewind_impblock(struct mdoc *mdoc, int tok, int line, int ppos) +rew_impblock(struct mdoc *mdoc, int tok, int line, int ppos) { struct mdoc_node *n; int c; /* LINTED */ for (n = mdoc->last; n; n = n->parent) { - c = rewind_dohalt(tok, MDOC_BLOCK, n); + c = rew_dohalt(tok, MDOC_BLOCK, n); if (REWIND_HALT == c) return(1); else if (REWIND_REWIND == c) break; - else if (rewind_dobreak(tok, n)) + else if (rew_dobreak(tok, n)) continue; - return(mdoc_perr(mdoc, line, ppos, "scope breaks prior %s", mdoc_node2a(n))); + if ( ! swarn(mdoc, MDOC_BLOCK, line, ppos, n)) + return(0); } assert(n); - return(rewind_last(mdoc, n)); + return(rew_last(mdoc, n)); } @@ -398,6 +685,8 @@ append_delims(struct mdoc *mdoc, int line, int *pos, c for (;;) { lastarg = *pos; c = mdoc_args(mdoc, line, pos, buf, 0, &p); + assert(ARGS_PHRASE != c); + if (ARGS_ERROR == c) return(0); else if (ARGS_EOLN == c) @@ -412,10 +701,13 @@ append_delims(struct mdoc *mdoc, int line, int *pos, c } -int -macro_scoped_close(MACRO_PROT_ARGS) +/* + * Close out block partial/full explicit. + */ +static int +blk_exp_close(MACRO_PROT_ARGS) { - int tt, j, c, lastarg, maxargs, flushed; + int j, c, lastarg, maxargs, flushed; char *p; switch (tok) { @@ -427,42 +719,37 @@ macro_scoped_close(MACRO_PROT_ARGS) break; } - tt = rewind_alt(tok); - - mdoc_msg(mdoc, "parse: %s closing %s", - mdoc_macronames[tok], mdoc_macronames[tt]); - if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) { if (0 == buf[*pos]) { - if ( ! rewind_subblock(MDOC_BODY, mdoc, tok, line, ppos)) + if ( ! rew_subblock(MDOC_BODY, mdoc, + tok, line, ppos)) return(0); - return(rewind_expblock(mdoc, tok, line, ppos)); + return(rew_expblock(mdoc, tok, line, ppos)); } - return(mdoc_perr(mdoc, line, ppos, "macro expects no parameters")); + return(perr(mdoc, line, ppos, ENOPARMS)); } - if ( ! rewind_subblock(MDOC_BODY, mdoc, tok, line, ppos)) + if ( ! rew_subblock(MDOC_BODY, mdoc, tok, line, ppos)) return(0); - lastarg = ppos; - flushed = 0; - if (maxargs > 0) { - if ( ! mdoc_tail_alloc(mdoc, line, ppos, tt)) + if ( ! mdoc_tail_alloc(mdoc, line, + ppos, rew_alt(tok))) return(0); mdoc->next = MDOC_NEXT_CHILD; } - for (j = 0; /* No sentinel. */; j++) { + for (lastarg = ppos, flushed = j = 0; ; j++) { lastarg = *pos; if (j == maxargs && ! flushed) { - if ( ! rewind_expblock(mdoc, tok, line, ppos)) + if ( ! rew_expblock(mdoc, tok, line, ppos)) return(0); flushed = 1; } - c = mdoc_args(mdoc, line, pos, buf, ARGS_DELIM, &p); + c = mdoc_args(mdoc, line, pos, buf, tok, &p); + if (ARGS_ERROR == c) return(0); if (ARGS_PUNCT == c) @@ -474,7 +761,8 @@ macro_scoped_close(MACRO_PROT_ARGS) return(0); else if (MDOC_MAX != c) { if ( ! flushed) { - if ( ! rewind_expblock(mdoc, tok, line, ppos)) + if ( ! rew_expblock(mdoc, tok, + line, ppos)) return(0); flushed = 1; } @@ -488,7 +776,7 @@ macro_scoped_close(MACRO_PROT_ARGS) mdoc->next = MDOC_NEXT_SIBLING; } - if ( ! flushed && ! rewind_expblock(mdoc, tok, line, ppos)) + if ( ! flushed && ! rew_expblock(mdoc, tok, line, ppos)) return(0); if (ppos > 1) @@ -497,93 +785,80 @@ macro_scoped_close(MACRO_PROT_ARGS) } -int -macro_text(MACRO_PROT_ARGS) +/* + * In-line macros where reserved words cause scope close-reopen. + */ +static int +in_line(MACRO_PROT_ARGS) { - int la, lastpunct, c, fl, argc; - struct mdoc_arg argv[MDOC_LINEARG_MAX]; + int la, lastpunct, c, w; + struct mdoc_arg *arg; char *p; - la = ppos; - lastpunct = 0; - - for (argc = 0; argc < MDOC_LINEARG_MAX; argc++) { + for (la = ppos, arg = NULL;; ) { la = *pos; - c = mdoc_argv(mdoc, line, tok, &argv[argc], pos, buf); - if (ARGV_EOLN == c) - break; + c = mdoc_argv(mdoc, line, tok, &arg, pos, buf); + if (ARGV_WORD == c) { *pos = la; break; - } else if (ARGV_ARG == c) + } + + if (ARGV_EOLN == c) + break; + if (ARGV_ARG == c) continue; - mdoc_argv_free(argc, argv); + mdoc_argv_free(arg); return(0); } - if (MDOC_LINEARG_MAX == argc) { - mdoc_argv_free(argc - 1, argv); - return(mdoc_perr(mdoc, line, ppos, "parameter hard-limit exceeded")); - } - - c = mdoc_elem_alloc(mdoc, line, ppos, tok, argc, argv); - - if (0 == c) { - mdoc_argv_free(argc, argv); + if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg)) return(0); - } - mdoc->next = MDOC_NEXT_CHILD; - fl = ARGS_DELIM; - if (MDOC_QUOTABLE & mdoc_macros[tok].flags) - fl |= ARGS_QUOTED; - - lastpunct = 0; - for (;;) { + for (lastpunct = 0;; ) { la = *pos; - c = mdoc_args(mdoc, line, pos, buf, fl, &p); - if (ARGS_ERROR == c) { - mdoc_argv_free(argc, argv); - return(0); - } + w = mdoc_args(mdoc, line, pos, buf, tok, &p); - if (ARGS_EOLN == c) + if (ARGS_ERROR == w) + return(0); + if (ARGS_EOLN == w) break; - if (ARGS_PUNCT == c) + if (ARGS_PUNCT == w) break; - if (-1 == (c = lookup(mdoc, line, la, tok, p))) - return(0); - else if (MDOC_MAX != c) { - if (0 == lastpunct && ! rewind_elem(mdoc, tok)) { - mdoc_argv_free(argc, argv); - return(0); - } - mdoc_argv_free(argc, argv); + /* Quoted words shouldn't be looked-up. */ + c = ARGS_QWORD == w ? MDOC_MAX : + lookup(mdoc, line, la, tok, p); + + /* MDOC_MAX (not a macro) or -1 (error). */ + + if (MDOC_MAX != c && -1 != c) { + if (0 == lastpunct && ! rew_elem(mdoc, tok)) + return(0); c = mdoc_macro(mdoc, c, line, la, pos, buf); if (0 == c) return(0); if (ppos > 1) return(1); return(append_delims(mdoc, line, pos, buf)); - } + } else if (-1 == c) + return(0); - if (mdoc_isdelim(p)) { - if (0 == lastpunct && ! rewind_elem(mdoc, tok)) { - mdoc_argv_free(argc, argv); + /* Non-quote-enclosed punctuation. */ + + if (ARGS_QWORD != w && mdoc_isdelim(p)) { + if (0 == lastpunct && ! rew_elem(mdoc, tok)) return(0); - } lastpunct = 1; } else if (lastpunct) { - c = mdoc_elem_alloc(mdoc, line, - ppos, tok, argc, argv); - if (0 == c) { - mdoc_argv_free(argc, argv); + c = mdoc_elem_alloc(mdoc, line, ppos, tok, arg); + + if (0 == c) return(0); - } + mdoc->next = MDOC_NEXT_CHILD; lastpunct = 0; } @@ -593,9 +868,7 @@ macro_text(MACRO_PROT_ARGS) mdoc->next = MDOC_NEXT_SIBLING; } - mdoc_argv_free(argc, argv); - - if (0 == lastpunct && ! rewind_elem(mdoc, tok)) + if (0 == lastpunct && ! rew_elem(mdoc, tok)) return(0); if (ppos > 1) return(1); @@ -603,54 +876,51 @@ macro_text(MACRO_PROT_ARGS) } -int -macro_scoped(MACRO_PROT_ARGS) +/* + * Block full-explicit and full-implicit. + */ +static int +blk_full(MACRO_PROT_ARGS) { - int c, lastarg, argc, fl; - struct mdoc_arg argv[MDOC_LINEARG_MAX]; + int c, lastarg, reopen; + struct mdoc_arg *arg; char *p; - assert ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)); - if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) { - if ( ! rewind_subblock(MDOC_BODY, mdoc, tok, line, ppos)) + if ( ! rew_subblock(MDOC_BODY, mdoc, + tok, line, ppos)) return(0); - if ( ! rewind_impblock(mdoc, tok, line, ppos)) + if ( ! rew_impblock(mdoc, tok, line, ppos)) return(0); } - for (argc = 0; argc < MDOC_LINEARG_MAX; argc++) { + for (arg = NULL;; ) { lastarg = *pos; - c = mdoc_argv(mdoc, line, tok, &argv[argc], pos, buf); - if (ARGV_EOLN == c) - break; + c = mdoc_argv(mdoc, line, tok, &arg, pos, buf); + if (ARGV_WORD == c) { *pos = lastarg; break; - } else if (ARGV_ARG == c) + } + + if (ARGV_EOLN == c) + break; + if (ARGV_ARG == c) continue; - mdoc_argv_free(argc, argv); + + mdoc_argv_free(arg); return(0); } - if (MDOC_LINEARG_MAX == argc) { - mdoc_argv_free(argc - 1, argv); - return(mdoc_perr(mdoc, line, ppos, "parameter hard-limit exceeded")); - } - - c = mdoc_block_alloc(mdoc, line, ppos, - tok, (size_t)argc, argv); - mdoc_argv_free(argc, argv); - - if (0 == c) + if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, arg)) return(0); - mdoc->next = MDOC_NEXT_CHILD; if (0 == buf[*pos]) { if ( ! mdoc_head_alloc(mdoc, line, ppos, tok)) return(0); - if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) + if ( ! rew_subblock(MDOC_HEAD, mdoc, + tok, line, ppos)) return(0); if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) return(0); @@ -662,24 +932,38 @@ macro_scoped(MACRO_PROT_ARGS) return(0); mdoc->next = MDOC_NEXT_CHILD; - fl = ARGS_DELIM; - if (MDOC_TABSEP & mdoc_macros[tok].flags) - fl |= ARGS_TABSEP; - - for (;;) { + for (reopen = 0;; ) { lastarg = *pos; - c = mdoc_args(mdoc, line, pos, buf, fl, &p); - + c = mdoc_args(mdoc, line, pos, buf, tok, &p); + if (ARGS_ERROR == c) return(0); - if (ARGS_PUNCT == c) - break; if (ARGS_EOLN == c) break; - + if (ARGS_PHRASE == c) { + if (reopen && ! mdoc_head_alloc + (mdoc, line, ppos, tok)) + return(0); + mdoc->next = MDOC_NEXT_CHILD; + /* + * Phrases are self-contained macro phrases used + * in the columnar output of a macro. They need + * special handling. + */ + if ( ! phrase(mdoc, line, lastarg, buf)) + return(0); + if ( ! rew_subblock(MDOC_HEAD, mdoc, + tok, line, ppos)) + return(0); + + reopen = 1; + continue; + } + if (-1 == (c = lookup(mdoc, line, lastarg, tok, p))) return(0); - else if (MDOC_MAX == c) { + + if (MDOC_MAX == c) { if ( ! mdoc_word_alloc(mdoc, line, lastarg, p)) return(0); mdoc->next = MDOC_NEXT_SIBLING; @@ -690,11 +974,11 @@ macro_scoped(MACRO_PROT_ARGS) return(0); break; } - - if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) - return(0); + if (1 == ppos && ! append_delims(mdoc, line, pos, buf)) return(0); + if ( ! rew_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) + return(0); if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) return(0); @@ -704,26 +988,32 @@ macro_scoped(MACRO_PROT_ARGS) } -int -macro_scoped_line(MACRO_PROT_ARGS) +/* + * Block partial-imnplicit scope. + */ +static int +blk_part_imp(MACRO_PROT_ARGS) { int lastarg, c; char *p; - if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, 0, NULL)) + if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL)) return(0); mdoc->next = MDOC_NEXT_CHILD; if ( ! mdoc_head_alloc(mdoc, line, ppos, tok)) return(0); + mdoc->next = MDOC_NEXT_SIBLING; + if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) + return(0); mdoc->next = MDOC_NEXT_CHILD; /* XXX - no known argument macros. */ - lastarg = ppos; - for (;;) { + for (lastarg = ppos;; ) { lastarg = *pos; - c = mdoc_args(mdoc, line, pos, buf, ARGS_DELIM, &p); + c = mdoc_args(mdoc, line, pos, buf, tok, &p); + assert(ARGS_PHRASE != c); if (ARGS_ERROR == c) return(0); @@ -747,18 +1037,21 @@ macro_scoped_line(MACRO_PROT_ARGS) } if (1 == ppos) { - if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) + if ( ! rew_subblock(MDOC_BODY, mdoc, tok, line, ppos)) return(0); if ( ! append_delims(mdoc, line, pos, buf)) return(0); - } else if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) + } else if ( ! rew_subblock(MDOC_BODY, mdoc, tok, line, ppos)) return(0); - return(rewind_impblock(mdoc, tok, line, ppos)); + return(rew_impblock(mdoc, tok, line, ppos)); } -int -macro_constant_scoped(MACRO_PROT_ARGS) +/* + * Block partial-explicit macros. + */ +static int +blk_part_exp(MACRO_PROT_ARGS) { int lastarg, flushed, j, c, maxargs; char *p; @@ -766,6 +1059,10 @@ macro_constant_scoped(MACRO_PROT_ARGS) lastarg = ppos; flushed = 0; + /* + * Number of arguments (head arguments). Only `Eo' has these, + */ + switch (tok) { case (MDOC_Eo): maxargs = 1; @@ -775,14 +1072,15 @@ macro_constant_scoped(MACRO_PROT_ARGS) break; } - if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, 0, NULL)) + if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL)) return(0); mdoc->next = MDOC_NEXT_CHILD; if (0 == maxargs) { if ( ! mdoc_head_alloc(mdoc, line, ppos, tok)) return(0); - if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) + if ( ! rew_subblock(MDOC_HEAD, mdoc, + tok, line, ppos)) return(0); if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) return(0); @@ -792,11 +1090,11 @@ macro_constant_scoped(MACRO_PROT_ARGS) mdoc->next = MDOC_NEXT_CHILD; - for (j = 0; /* No sentinel. */; j++) { + for (j = 0; ; j++) { lastarg = *pos; - if (j == maxargs && ! flushed) { - if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) + if ( ! rew_subblock(MDOC_HEAD, mdoc, + tok, line, ppos)) return(0); flushed = 1; if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) @@ -804,7 +1102,9 @@ macro_constant_scoped(MACRO_PROT_ARGS) mdoc->next = MDOC_NEXT_CHILD; } - c = mdoc_args(mdoc, line, pos, buf, ARGS_DELIM, &p); + c = mdoc_args(mdoc, line, pos, buf, tok, &p); + assert(ARGS_PHRASE != c); + if (ARGS_ERROR == c) return(0); if (ARGS_PUNCT == c) @@ -816,20 +1116,24 @@ macro_constant_scoped(MACRO_PROT_ARGS) return(0); else if (MDOC_MAX != c) { if ( ! flushed) { - if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) + if ( ! rew_subblock(MDOC_HEAD, mdoc, + tok, line, ppos)) return(0); flushed = 1; - if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) + if ( ! mdoc_body_alloc(mdoc, line, + ppos, tok)) return(0); mdoc->next = MDOC_NEXT_CHILD; } - if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf)) + if ( ! mdoc_macro(mdoc, c, line, lastarg, + pos, buf)) return(0); break; } if ( ! flushed && mdoc_isdelim(p)) { - if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) + if ( ! rew_subblock(MDOC_HEAD, mdoc, + tok, line, ppos)) return(0); flushed = 1; if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) @@ -843,7 +1147,7 @@ macro_constant_scoped(MACRO_PROT_ARGS) } if ( ! flushed) { - if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) + if ( ! rew_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) return(0); if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) return(0); @@ -856,26 +1160,31 @@ macro_constant_scoped(MACRO_PROT_ARGS) } -int -macro_constant_delimited(MACRO_PROT_ARGS) +/* + * In-line macros where reserved words signal closure of the macro. + * Macros also have a fixed number of arguments. + */ +static int +in_line_argn(MACRO_PROT_ARGS) { - int lastarg, flushed, j, c, maxargs, argc; - struct mdoc_arg argv[MDOC_LINEARG_MAX]; + int lastarg, flushed, j, c, maxargs; + struct mdoc_arg *arg; char *p; - lastarg = ppos; - flushed = 0; + + /* + * Fixed maximum arguments per macro. Some of these have none + * and close as soon as the invocation is parsed. + */ switch (tok) { + case (MDOC_Ap): + /* FALLTHROUGH */ case (MDOC_No): /* FALLTHROUGH */ case (MDOC_Ns): /* FALLTHROUGH */ - case (MDOC_Pf): - /* FALLTHROUGH */ case (MDOC_Ux): - /* FALLTHROUGH */ - case (MDOC_St): maxargs = 0; break; default: @@ -883,43 +1192,39 @@ macro_constant_delimited(MACRO_PROT_ARGS) break; } - for (argc = 0; argc < MDOC_LINEARG_MAX; argc++) { + for (lastarg = ppos, arg = NULL;; ) { lastarg = *pos; - c = mdoc_argv(mdoc, line, tok, &argv[argc], pos, buf); - if (ARGV_EOLN == c) - break; + c = mdoc_argv(mdoc, line, tok, &arg, pos, buf); + if (ARGV_WORD == c) { *pos = lastarg; break; - } else if (ARGV_ARG == c) + } + + if (ARGV_EOLN == c) + break; + if (ARGV_ARG == c) continue; - mdoc_argv_free(argc, argv); + + mdoc_argv_free(arg); return(0); } - if (MDOC_LINEARG_MAX == argc) { - mdoc_argv_free(argc - 1, argv); - return(mdoc_perr(mdoc, line, ppos, "parameter hard-limit exceeded")); - } - - c = mdoc_elem_alloc(mdoc, line, ppos, tok, argc, argv); - mdoc_argv_free(argc, argv); - - if (0 == c) + if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg)) return(0); - mdoc->next = MDOC_NEXT_CHILD; - for (j = 0; /* No sentinel. */; j++) { + for (flushed = j = 0; ; j++) { lastarg = *pos; if (j == maxargs && ! flushed) { - if ( ! rewind_elem(mdoc, tok)) + if ( ! rew_elem(mdoc, tok)) return(0); flushed = 1; } - c = mdoc_args(mdoc, line, pos, buf, ARGS_DELIM, &p); + c = mdoc_args(mdoc, line, pos, buf, tok, &p); + if (ARGS_ERROR == c) return(0); if (ARGS_PUNCT == c) @@ -930,7 +1235,7 @@ macro_constant_delimited(MACRO_PROT_ARGS) if (-1 == (c = lookup(mdoc, line, lastarg, tok, p))) return(0); else if (MDOC_MAX != c) { - if ( ! flushed && ! rewind_elem(mdoc, tok)) + if ( ! flushed && ! rew_elem(mdoc, tok)) return(0); flushed = 1; if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf)) @@ -938,8 +1243,9 @@ macro_constant_delimited(MACRO_PROT_ARGS) break; } - if ( ! flushed && mdoc_isdelim(p)) { - if ( ! rewind_elem(mdoc, tok)) + if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) && + ! flushed && mdoc_isdelim(p)) { + if ( ! rew_elem(mdoc, tok)) return(0); flushed = 1; } @@ -949,7 +1255,7 @@ macro_constant_delimited(MACRO_PROT_ARGS) mdoc->next = MDOC_NEXT_SIBLING; } - if ( ! flushed && ! rewind_elem(mdoc, tok)) + if ( ! flushed && ! rew_elem(mdoc, tok)) return(0); if (ppos > 1) @@ -958,101 +1264,152 @@ macro_constant_delimited(MACRO_PROT_ARGS) } -int -macro_constant(MACRO_PROT_ARGS) +/* + * In-line macro that spans an entire line. May be callable, but has no + * subsequent parsed arguments. + */ +static int +in_line_eoln(MACRO_PROT_ARGS) { - int c, lastarg, argc, fl; - struct mdoc_arg argv[MDOC_LINEARG_MAX]; - char *p; + int c, w, la; + struct mdoc_arg *arg; + char *p; - fl = 0; - if (MDOC_QUOTABLE & mdoc_macros[tok].flags) - fl = ARGS_QUOTED; + assert( ! (MDOC_PARSED & mdoc_macros[tok].flags)); - for (argc = 0; argc < MDOC_LINEARG_MAX; argc++) { - lastarg = *pos; - c = mdoc_argv(mdoc, line, tok, &argv[argc], pos, buf); - if (ARGV_EOLN == c) - break; + arg = NULL; + + for (;;) { + la = *pos; + c = mdoc_argv(mdoc, line, tok, &arg, pos, buf); + if (ARGV_WORD == c) { - *pos = lastarg; + *pos = la; break; - } else if (ARGV_ARG == c) + } + if (ARGV_EOLN == c) + break; + if (ARGV_ARG == c) continue; - mdoc_argv_free(argc, argv); + mdoc_argv_free(arg); return(0); } - if (MDOC_LINEARG_MAX == argc) { - mdoc_argv_free(argc - 1, argv); - return(mdoc_perr(mdoc, line, ppos, "parameter hard-limit exceeded")); - } - - c = mdoc_elem_alloc(mdoc, line, ppos, tok, argc, argv); - mdoc_argv_free(argc, argv); - - if (0 == c) + if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg)) return(0); mdoc->next = MDOC_NEXT_CHILD; for (;;) { - lastarg = *pos; - c = mdoc_args(mdoc, line, pos, buf, fl, &p); - if (ARGS_ERROR == c) + la = *pos; + w = mdoc_args(mdoc, line, pos, buf, tok, &p); + + if (ARGS_ERROR == w) return(0); - if (ARGS_EOLN == c) + if (ARGS_EOLN == w) break; - if (-1 == (c = lookup(mdoc, line, lastarg, tok, p))) - return(0); - else if (MDOC_MAX != c) { - if ( ! rewind_elem(mdoc, tok)) + c = ARGS_QWORD == w ? MDOC_MAX : + lookup(mdoc, line, la, tok, p); + + if (MDOC_MAX != c && -1 != c) { + if ( ! rew_elem(mdoc, tok)) return(0); - return(mdoc_macro(mdoc, c, line, - lastarg, pos, buf)); - } + return(mdoc_macro(mdoc, c, line, la, pos, buf)); + } else if (-1 == c) + return(0); - if ( ! mdoc_word_alloc(mdoc, line, lastarg, p)) + if ( ! mdoc_word_alloc(mdoc, line, la, p)) return(0); mdoc->next = MDOC_NEXT_SIBLING; } - return(rewind_elem(mdoc, tok)); + return(rew_elem(mdoc, tok)); } /* ARGSUSED */ -int -macro_obsolete(MACRO_PROT_ARGS) +static int +obsolete(MACRO_PROT_ARGS) { - return(mdoc_pwarn(mdoc, line, ppos, WARN_SYNTAX, "macro is obsolete")); + return(pwarn(mdoc, line, ppos, WOBS)); } -int -macro_end(struct mdoc *mdoc) +static int +phrase(struct mdoc *mdoc, int line, int ppos, char *buf) { - struct mdoc_node *n; + int i, la, c, quoted; - assert(mdoc->first); - assert(mdoc->last); + /* + * Parse over words in a phrase. We have to handle this + * specially because we assume no calling context -- in normal + * circumstances, we switch argument parsing based on whether + * the parent macro accepts quotes, tabs, etc. Here, anything + * goes. + */ - /* Scan for open explicit scopes. */ + for (i = ppos; buf[i]; ) { + assert(' ' != buf[i]); + la = i; + quoted = 0; - n = MDOC_VALID & mdoc->last->flags ? - mdoc->last->parent : mdoc->last; + /* + * Read to next token. If quoted (check not escaped), + * scan ahead to next unescaped quote. If not quoted or + * escape-quoted, then scan ahead to next space. + */ - for ( ; n; n = n->parent) { - if (MDOC_BLOCK != n->type) - continue; - if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags)) - continue; - mdoc_nerr(mdoc, n, "macro scope still open on exit"); - return(0); + if ((i && '\"' == buf[i] && '\\' != buf[i - 1]) || + (0 == i && '\"' == buf[i])) { + for (la = ++i; buf[i]; i++) + if ('\"' != buf[i]) + continue; + else if ('\\' != buf[i - 1]) + break; + if (0 == buf[i]) + return(perr(mdoc, line, la, EQUOT)); + quoted = 1; + } else + for ( ; buf[i]; i++) + if (i && ' ' == buf[i]) { + if ('\\' != buf[i - 1]) + break; + } else if (' ' == buf[i]) + break; + + /* If not end-of-line, terminate argument. */ + + if (buf[i]) + buf[i++] = 0; + + /* Read to next argument. */ + + for ( ; buf[i] && ' ' == buf[i]; i++) + /* Spin. */ ; + + /* + * If we're a non-quoted string, try to look up the + * value as a macro and execute it, if found. + */ + + c = quoted ? MDOC_MAX : + mdoc_tokhash_find(mdoc->htab, &buf[la]); + + if (MDOC_MAX != c) { + if ( ! mdoc_macro(mdoc, c, line, la, &i, buf)) + return(0); + return(append_delims(mdoc, line, &i, buf)); + } + + /* A regular word or quoted string. */ + + if ( ! mdoc_word_alloc(mdoc, line, la, &buf[la])) + return(0); + mdoc->next = MDOC_NEXT_SIBLING; } - return(rewind_last(mdoc, mdoc->first)); + return(1); }