/* $Id$ */ /* * Copyright (c) 2008 Kristaps Dzonsons * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the * above copyright notice and this permission notice appear in all * copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #ifdef __linux__ #include #endif /* * 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. */ #include "private.h" static int macro_obsolete(MACRO_PROT_ARGS); static int macro_constant(MACRO_PROT_ARGS); static int macro_constant_scoped(MACRO_PROT_ARGS); static int macro_constant_delimited(MACRO_PROT_ARGS); static int macro_text(MACRO_PROT_ARGS); static int macro_scoped(MACRO_PROT_ARGS); static int macro_scoped_close(MACRO_PROT_ARGS); static int macro_scoped_line(MACRO_PROT_ARGS); #define REWIND_REWIND (1 << 0) #define REWIND_NOHALT (1 << 1) #define REWIND_HALT (1 << 2) static int rewind_dohalt(int, enum mdoc_type, const struct mdoc_node *); static int rewind_alt(int); static int rewind_dobreak(int, const struct mdoc_node *); 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, struct mdoc *, int, int, int); static int rewind_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, int); static int perr(struct mdoc *, int, int, int); static int scopewarn(struct mdoc *, enum mdoc_type, int, int, const struct mdoc_node *); #define WMACPARM (1) #define WOBS (2) #define ENOCTX (1) #define ENOPARMS (2) /* Central table of library: who gets parsed how. */ const struct mdoc_macro __mdoc_macros[MDOC_MAX] = { { NULL, 0 }, /* \" */ { macro_constant, MDOC_PROLOGUE }, /* Dd */ { macro_constant, MDOC_PROLOGUE }, /* Dt */ { macro_constant, MDOC_PROLOGUE }, /* Os */ { macro_scoped, 0 }, /* Sh */ { macro_scoped, 0 }, /* Ss */ { macro_text, 0 }, /* Pp */ { macro_scoped_line, MDOC_PARSED }, /* D1 */ { macro_scoped_line, MDOC_PARSED }, /* Dl */ { macro_scoped, MDOC_EXPLICIT }, /* Bd */ { macro_scoped_close, MDOC_EXPLICIT }, /* Ed */ { macro_scoped, MDOC_EXPLICIT }, /* Bl */ { macro_scoped_close, MDOC_EXPLICIT }, /* El */ { macro_scoped, MDOC_PARSED }, /* It */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */ { macro_text, MDOC_PARSED }, /* An */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */ { macro_constant, 0 }, /* Cd */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Er */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */ { macro_constant, 0 }, /* Ex */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */ { macro_constant, 0 }, /* Fd */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */ { macro_text, MDOC_PARSED }, /* Ft */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */ { macro_constant, 0 }, /* In */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Li */ { macro_constant, 0 }, /* Nd */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */ { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Op */ { macro_obsolete, 0 }, /* Ot */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */ { macro_constant, 0 }, /* Rv */ /* XXX - .St supposed to be (but isn't) callable. */ { macro_constant_delimited, MDOC_PARSED }, /* St */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Va */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */ { macro_constant, 0 }, /* %A */ { macro_constant, 0 }, /* %B */ { macro_constant, 0 }, /* %D */ { macro_constant, 0 }, /* %I */ { macro_constant, 0 }, /* %J */ { macro_constant, 0 }, /* %N */ { macro_constant, 0 }, /* %O */ { macro_constant, 0 }, /* %P */ { macro_constant, 0 }, /* %R */ { macro_constant, 0 }, /* %T */ { macro_constant, 0 }, /* %V */ { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */ { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */ { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */ { macro_constant_delimited, 0 }, /* At */ { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */ { macro_scoped, MDOC_EXPLICIT }, /* Bf */ { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */ { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */ { macro_constant_delimited, MDOC_PARSED }, /* Bsx */ { macro_constant_delimited, MDOC_PARSED }, /* Bx */ { macro_constant, 0 }, /* Db */ { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */ { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */ { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */ { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */ { macro_scoped_close, MDOC_EXPLICIT }, /* Ef */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Em */ { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */ { macro_constant_delimited, MDOC_PARSED }, /* Fx */ { macro_text, MDOC_PARSED }, /* Ms */ { macro_constant_delimited, MDOC_CALLABLE | MDOC_PARSED }, /* No */ { macro_constant_delimited, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */ { macro_constant_delimited, MDOC_PARSED }, /* Nx */ { macro_constant_delimited, MDOC_PARSED }, /* Ox */ { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */ { macro_constant_delimited, MDOC_PARSED }, /* Pf */ { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */ { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */ { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */ { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */ { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */ { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */ { macro_scoped_close, MDOC_EXPLICIT }, /* Re */ { macro_scoped, MDOC_EXPLICIT }, /* Rs */ { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */ { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */ { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */ { macro_constant, 0 }, /* Sm */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */ { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */ { macro_constant_delimited, MDOC_PARSED }, /* Ux */ { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */ { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */ /* XXX - .Fo supposed to be (but isn't) callable. */ { macro_scoped, MDOC_EXPLICIT }, /* Fo */ { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Fc */ { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */ { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */ { macro_scoped, MDOC_EXPLICIT }, /* Bk */ { macro_scoped_close, MDOC_EXPLICIT }, /* Ek */ { macro_constant, 0 }, /* Bt */ { macro_constant, 0 }, /* Hf */ { macro_obsolete, 0 }, /* Fr */ { macro_constant, 0 }, /* Ud */ { macro_constant, 0 }, /* Lb */ { macro_constant_delimited, MDOC_CALLABLE | MDOC_PARSED }, /* Ap */ { macro_text, 0 }, /* Lp */ }; const struct mdoc_macro * const mdoc_macros = __mdoc_macros; static int perr(struct mdoc *mdoc, int line, int pos, int type) { int c; switch (type) { case (ENOCTX): c = mdoc_perr(mdoc, line, pos, "closing macro has no prior context"); break; case (ENOPARMS): c = mdoc_perr(mdoc, line, pos, "macro doesn't expect parameters"); break; default: abort(); /* NOTREACHED */ } return(c); } static int pwarn(struct mdoc *mdoc, int line, int pos, int type) { int c; switch (type) { case (WMACPARM): c = mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX, "macro-like parameter"); break; case (WOBS): c = mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX, "macro is marked obsolete"); break; default: abort(); /* NOTREACHED */ } return(c); } static int scopewarn(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)); } static int lookup(struct mdoc *mdoc, int line, int pos, int from, const char *p) { int res; res = mdoc_tokhash_find(mdoc->htab, p); if (MDOC_PARSED & mdoc_macros[from].flags) return(res); if (MDOC_MAX == res) return(res); if ( ! pwarn(mdoc, line, pos, WMACPARM)) return(-1); return(MDOC_MAX); } static int rewind_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); if ( ! mdoc_action_post(mdoc)) return(0); mdoc->last = mdoc->last->parent; assert(mdoc->last); } if ( ! mdoc_valid_post(mdoc)) return(0); return(mdoc_action_post(mdoc)); } static int rewind_alt(int tok) { switch (tok) { case (MDOC_Ac): return(MDOC_Ao); case (MDOC_Bc): return(MDOC_Bo); case (MDOC_Dc): return(MDOC_Do); case (MDOC_Ec): return(MDOC_Eo); case (MDOC_Ed): return(MDOC_Bd); case (MDOC_Ef): return(MDOC_Bf); case (MDOC_Ek): return(MDOC_Bk); case (MDOC_El): return(MDOC_Bl); case (MDOC_Fc): return(MDOC_Fo); case (MDOC_Oc): return(MDOC_Oo); case (MDOC_Pc): return(MDOC_Po); case (MDOC_Qc): return(MDOC_Qo); case (MDOC_Re): return(MDOC_Rs); case (MDOC_Sc): return(MDOC_So); case (MDOC_Xc): return(MDOC_Xo); default: break; } abort(); /* NOTREACHED */ } static int rewind_dohalt(int tok, enum mdoc_type type, const struct mdoc_node *p) { if (MDOC_ROOT == p->type) return(REWIND_HALT); if (MDOC_VALID & p->flags) return(REWIND_NOHALT); switch (tok) { /* One-liner implicit-scope. */ case (MDOC_Aq): /* FALLTHROUGH */ case (MDOC_Bq): /* FALLTHROUGH */ case (MDOC_D1): /* FALLTHROUGH */ case (MDOC_Dl): /* FALLTHROUGH */ case (MDOC_Dq): /* FALLTHROUGH */ case (MDOC_Op): /* FALLTHROUGH */ case (MDOC_Pq): /* FALLTHROUGH */ case (MDOC_Ql): /* FALLTHROUGH */ case (MDOC_Qq): /* FALLTHROUGH */ case (MDOC_Sq): assert(MDOC_HEAD != type); assert(MDOC_TAIL != type); if (type == p->type && tok == p->tok) return(REWIND_REWIND); break; /* Multi-line implicit-scope. */ case (MDOC_It): assert(MDOC_TAIL != type); if (type == p->type && tok == p->tok) return(REWIND_REWIND); if (MDOC_BODY == p->type && MDOC_Bl == p->tok) return(REWIND_HALT); break; case (MDOC_Sh): if (type == p->type && tok == p->tok) return(REWIND_REWIND); break; case (MDOC_Ss): assert(MDOC_TAIL != type); if (type == p->type && tok == p->tok) return(REWIND_REWIND); if (MDOC_BODY == p->type && MDOC_Sh == p->tok) return(REWIND_HALT); break; /* Multi-line explicit scope start. */ case (MDOC_Ao): /* FALLTHROUGH */ case (MDOC_Bd): /* FALLTHROUGH */ case (MDOC_Bf): /* FALLTHROUGH */ case (MDOC_Bk): /* FALLTHROUGH */ case (MDOC_Bl): /* FALLTHROUGH */ case (MDOC_Bo): /* FALLTHROUGH */ case (MDOC_Do): /* FALLTHROUGH */ case (MDOC_Eo): /* FALLTHROUGH */ case (MDOC_Fo): /* FALLTHROUGH */ case (MDOC_Oo): /* FALLTHROUGH */ case (MDOC_Po): /* FALLTHROUGH */ case (MDOC_Qo): /* FALLTHROUGH */ case (MDOC_Rs): /* FALLTHROUGH */ case (MDOC_So): /* FALLTHROUGH */ case (MDOC_Xo): if (type == p->type && tok == p->tok) return(REWIND_REWIND); break; /* Multi-line explicit scope close. */ case (MDOC_Ac): /* FALLTHROUGH */ case (MDOC_Bc): /* FALLTHROUGH */ case (MDOC_Dc): /* FALLTHROUGH */ case (MDOC_Ec): /* FALLTHROUGH */ case (MDOC_Ed): /* FALLTHROUGH */ case (MDOC_Ek): /* FALLTHROUGH */ case (MDOC_El): /* FALLTHROUGH */ case (MDOC_Fc): /* FALLTHROUGH */ case (MDOC_Ef): /* FALLTHROUGH */ case (MDOC_Oc): /* FALLTHROUGH */ case (MDOC_Pc): /* FALLTHROUGH */ case (MDOC_Qc): /* FALLTHROUGH */ case (MDOC_Re): /* FALLTHROUGH */ case (MDOC_Sc): /* FALLTHROUGH */ case (MDOC_Xc): if (type == p->type && rewind_alt(tok) == p->tok) return(REWIND_REWIND); break; default: abort(); /* NOTREACHED */ } return(REWIND_NOHALT); } static int rewind_dobreak(int tok, const struct mdoc_node *p) { assert(MDOC_ROOT != p->type); if (MDOC_ELEM == p->type) return(1); if (MDOC_TEXT == p->type) return(1); if (MDOC_VALID & p->flags) return(1); switch (tok) { /* Implicit rules. */ case (MDOC_It): return(MDOC_It == p->tok); case (MDOC_Ss): return(MDOC_Ss == p->tok); case (MDOC_Sh): if (MDOC_Ss == p->tok) return(1); return(MDOC_Sh == p->tok); /* Extra scope rules. */ case (MDOC_El): if (MDOC_It == p->tok) return(1); break; default: break; } if (MDOC_EXPLICIT & mdoc_macros[tok].flags) return(p->tok == rewind_alt(tok)); else if (MDOC_BLOCK == p->type) return(1); return(tok == p->tok); } static int rewind_elem(struct mdoc *mdoc, int tok) { struct mdoc_node *n; n = mdoc->last; if (MDOC_ELEM != n->type) n = n->parent; assert(MDOC_ELEM == n->type); assert(tok == n->tok); return(rewind_last(mdoc, n)); } static int rewind_subblock(enum mdoc_type type, 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, type, n); if (REWIND_HALT == c) return(1); if (REWIND_REWIND == c) break; else if (rewind_dobreak(tok, n)) continue; if ( ! scopewarn(mdoc, type, line, ppos, n)) return(0); } assert(n); return(rewind_last(mdoc, n)); } static int rewind_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); if (REWIND_HALT == c) return(perr(mdoc, line, ppos, ENOCTX)); if (REWIND_REWIND == c) break; else if (rewind_dobreak(tok, n)) continue; if ( ! scopewarn(mdoc, MDOC_BLOCK, line, ppos, n)) return(0); } assert(n); return(rewind_last(mdoc, n)); } static int rewind_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); if (REWIND_HALT == c) return(1); else if (REWIND_REWIND == c) break; else if (rewind_dobreak(tok, n)) continue; if ( ! scopewarn(mdoc, MDOC_BLOCK, line, ppos, n)) return(0); } assert(n); return(rewind_last(mdoc, n)); } static int append_delims(struct mdoc *mdoc, int line, int *pos, char *buf) { int c, lastarg; char *p; if (0 == buf[*pos]) return(1); 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) break; assert(mdoc_isdelim(p)); if ( ! mdoc_word_alloc(mdoc, line, lastarg, p)) return(0); mdoc->next = MDOC_NEXT_SIBLING; } return(1); } /* * Close out an explicit scope. This optionally parses a TAIL type with * a set number of TEXT children. */ static int macro_scoped_close(MACRO_PROT_ARGS) { int tt, j, c, lastarg, maxargs, flushed; char *p; switch (tok) { case (MDOC_Ec): maxargs = 1; break; default: maxargs = 0; 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)) return(0); return(rewind_expblock(mdoc, tok, line, ppos)); } return(perr(mdoc, line, ppos, ENOPARMS)); } if ( ! rewind_subblock(MDOC_BODY, mdoc, tok, line, ppos)) return(0); lastarg = ppos; flushed = 0; if (maxargs > 0) { if ( ! mdoc_tail_alloc(mdoc, line, ppos, tt)) return(0); mdoc->next = MDOC_NEXT_CHILD; } for (j = 0; /* No sentinel. */; j++) { lastarg = *pos; if (j == maxargs && ! flushed) { if ( ! rewind_expblock(mdoc, tok, line, ppos)) return(0); flushed = 1; } c = mdoc_args(mdoc, line, pos, buf, tok, &p); assert(ARGS_PHRASE != c); if (ARGS_ERROR == c) return(0); if (ARGS_PUNCT == c) break; if (ARGS_EOLN == c) break; if (-1 == (c = lookup(mdoc, line, lastarg, tok, p))) return(0); else if (MDOC_MAX != c) { if ( ! flushed) { if ( ! rewind_expblock(mdoc, tok, line, ppos)) return(0); flushed = 1; } if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf)) return(0); break; } if ( ! mdoc_word_alloc(mdoc, line, lastarg, p)) return(0); mdoc->next = MDOC_NEXT_SIBLING; } if ( ! flushed && ! rewind_expblock(mdoc, tok, line, ppos)) return(0); if (ppos > 1) return(1); return(append_delims(mdoc, line, pos, buf)); } /* * A general text macro. This is a complex case because of punctuation. * If a text macro is followed by words, then punctuation, the macro is * "stopped" and "reopened" following the punctuation. Thus, the * following arises: * * .Fl a ; b * * ELEMENT (.Fl) * TEXT (`a') * TEXT (`;') * ELEMENT (.Fl) * TEXT (`b') * * This must handle the following situations: * * .Fl Ar b ; ; * * ELEMENT (.Fl) * ELEMENT (.Ar) * TEXT (`b') * TEXT (`;') * TEXT (`;') */ static int macro_text(MACRO_PROT_ARGS) { int la, lastpunct, c, w; struct mdoc_arg *arg; char *p; la = ppos; lastpunct = 0; arg = NULL; for (;;) { la = *pos; c = mdoc_argv(mdoc, line, tok, &arg, pos, buf); if (ARGV_EOLN == c) break; if (ARGV_WORD == c) { *pos = la; break; } else if (ARGV_ARG == c) continue; mdoc_argv_free(arg); return(0); } if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg)) return(0); mdoc->next = MDOC_NEXT_CHILD; lastpunct = 0; for (;;) { la = *pos; w = mdoc_args(mdoc, line, pos, buf, tok, &p); assert(ARGS_PHRASE != c); if (ARGS_ERROR == w) return(0); if (ARGS_EOLN == w) break; if (ARGS_PUNCT == w) break; c = ARGS_QWORD == w ? MDOC_MAX : lookup(mdoc, line, la, tok, p); if (MDOC_MAX != c && -1 != c) { if (0 == lastpunct && ! rewind_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); /* FIXME: .Fl and .Ar handling of `|'. */ if (ARGS_QWORD != w && mdoc_isdelim(p)) { if (0 == lastpunct && ! rewind_elem(mdoc, tok)) return(0); lastpunct = 1; } else if (lastpunct) { c = mdoc_elem_alloc(mdoc, line, ppos, tok, arg); if (0 == c) return(0); mdoc->next = MDOC_NEXT_CHILD; lastpunct = 0; } if ( ! mdoc_word_alloc(mdoc, line, la, p)) return(0); mdoc->next = MDOC_NEXT_SIBLING; } if (0 == lastpunct && ! rewind_elem(mdoc, tok)) return(0); if (ppos > 1) return(1); return(append_delims(mdoc, line, pos, buf)); } /* * Handle explicit-scope (having a different closure token) and implicit * scope (closing out prior scopes when re-invoked) macros. These * constitute the BLOCK type and usually span multiple lines. These * always have HEAD and sometimes have BODY types. In the multi-line * case: * * .Bd -ragged * Text. * .Fl macro * Another. * .Ed * * BLOCK (.Bd) * HEAD * BODY * TEXT (`Text.') * ELEMENT (.Fl) * TEXT (`macro') * TEXT (`Another.') * * Note that the `.It' macro, possibly the most difficult (as it has * embedded scope, etc.) is handled by this routine. */ static int macro_scoped(MACRO_PROT_ARGS) { int c, lastarg; struct mdoc_arg *arg; char *p; assert ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)); /* First rewind extant implicit scope. */ if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) { if ( ! rewind_subblock(MDOC_BODY, mdoc, tok, line, ppos)) return(0); if ( ! rewind_impblock(mdoc, tok, line, ppos)) return(0); } /* Parse arguments. */ arg = NULL; for (;;) { lastarg = *pos; c = mdoc_argv(mdoc, line, tok, &arg, pos, buf); if (ARGV_EOLN == c) break; if (ARGV_WORD == c) { *pos = lastarg; break; } else if (ARGV_ARG == c) continue; mdoc_argv_free(arg); return(0); } 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)) return(0); if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) return(0); mdoc->next = MDOC_NEXT_CHILD; return(1); } if ( ! mdoc_head_alloc(mdoc, line, ppos, tok)) return(0); mdoc->next = MDOC_NEXT_CHILD; for (;;) { lastarg = *pos; c = mdoc_args(mdoc, line, pos, buf, tok, &p); if (ARGS_ERROR == c) return(0); if (ARGS_EOLN == c) break; if (ARGS_PHRASE == c) { /* if ( ! mdoc_phrase(mdoc, line, lastarg, buf)) return(0); */ continue; } /* FIXME: if .It -column, the lookup must be for a * sub-line component. BLAH. */ if (-1 == (c = lookup(mdoc, line, lastarg, tok, p))) return(0); if (MDOC_MAX == c) { if ( ! mdoc_word_alloc(mdoc, line, lastarg, p)) return(0); mdoc->next = MDOC_NEXT_SIBLING; continue; } if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf)) return(0); break; } if (1 == ppos && ! append_delims(mdoc, line, pos, buf)) return(0); if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) return(0); if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) return(0); mdoc->next = MDOC_NEXT_CHILD; return(1); } /* * This handles a case of implicitly-scoped macro (BLOCK) limited to a * single line. Instead of being closed out by a subsequent call to * another macro, the scope is closed at the end of line. These don't * have BODY or TAIL types. Notice that the punctuation falls outside * of the HEAD type. * * .Qq a Fl b Ar d ; ; * * BLOCK (Qq) * HEAD * TEXT (`a') * ELEMENT (.Fl) * TEXT (`b') * ELEMENT (.Ar) * TEXT (`d') * TEXT (`;') * TEXT (`;') */ static int macro_scoped_line(MACRO_PROT_ARGS) { int lastarg, c; char *p; 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 (;;) { lastarg = *pos; c = mdoc_args(mdoc, line, pos, buf, tok, &p); assert(ARGS_PHRASE != c); if (ARGS_ERROR == c) return(0); if (ARGS_PUNCT == c) break; if (ARGS_EOLN == c) break; if (-1 == (c = lookup(mdoc, line, lastarg, tok, p))) return(0); else if (MDOC_MAX == c) { if ( ! mdoc_word_alloc(mdoc, line, lastarg, p)) return(0); mdoc->next = MDOC_NEXT_SIBLING; continue; } if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf)) return(0); break; } if (1 == ppos) { if ( ! rewind_subblock(MDOC_BODY, mdoc, tok, line, ppos)) return(0); if ( ! append_delims(mdoc, line, pos, buf)) return(0); } else if ( ! rewind_subblock(MDOC_BODY, mdoc, tok, line, ppos)) return(0); return(rewind_impblock(mdoc, tok, line, ppos)); } /* * A constant-scoped macro is like a simple-scoped macro (mdoc_scoped) * except that it doesn't handle implicit scopes and explicit ones have * a fixed number of TEXT children to the BODY. * * .Fl a So b Sc ; * * ELEMENT (.Fl) * TEXT (`a') * BLOCK (.So) * HEAD * BODY * TEXT (`b') * TEXT (';') */ static int macro_constant_scoped(MACRO_PROT_ARGS) { int lastarg, flushed, j, c, maxargs; char *p; lastarg = ppos; flushed = 0; switch (tok) { case (MDOC_Eo): maxargs = 1; break; default: maxargs = 0; break; } 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)) return(0); if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) return(0); flushed = 1; } else if ( ! mdoc_head_alloc(mdoc, line, ppos, tok)) return(0); mdoc->next = MDOC_NEXT_CHILD; for (j = 0; /* No sentinel. */; j++) { lastarg = *pos; if (j == maxargs && ! flushed) { if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) return(0); flushed = 1; if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) return(0); mdoc->next = MDOC_NEXT_CHILD; } c = mdoc_args(mdoc, line, pos, buf, tok, &p); assert(ARGS_PHRASE != c); if (ARGS_ERROR == c) return(0); if (ARGS_PUNCT == c) break; if (ARGS_EOLN == c) break; if (-1 == (c = lookup(mdoc, line, lastarg, tok, p))) return(0); else if (MDOC_MAX != c) { if ( ! flushed) { if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) return(0); flushed = 1; if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) return(0); mdoc->next = MDOC_NEXT_CHILD; } 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)) return(0); flushed = 1; if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) return(0); mdoc->next = MDOC_NEXT_CHILD; } if ( ! mdoc_word_alloc(mdoc, line, lastarg, p)) return(0); mdoc->next = MDOC_NEXT_SIBLING; } if ( ! flushed) { if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos)) return(0); if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) return(0); mdoc->next = MDOC_NEXT_CHILD; } if (ppos > 1) return(1); return(append_delims(mdoc, line, pos, buf)); } /* * A delimited constant is very similar to the macros parsed by * macro_text except that, in the event of punctuation, the macro isn't * "re-opened" as it is in macro_text. Also, these macros have a fixed * number of parameters. * * .Fl a No b * * ELEMENT (.Fl) * TEXT (`a') * ELEMENT (.No) * TEXT (`b') */ static int macro_constant_delimited(MACRO_PROT_ARGS) { int lastarg, flushed, j, c, maxargs, igndelim, ignargs; struct mdoc_arg *arg; char *p; lastarg = ppos; flushed = 0; /* * Maximum arguments per macro. Some of these have none and * exit as soon as they're parsed. */ switch (tok) { case (MDOC_Ap): /* FALLTHROUGH */ case (MDOC_No): /* FALLTHROUGH */ case (MDOC_Ns): /* FALLTHROUGH */ case (MDOC_Ux): maxargs = 0; break; default: maxargs = 1; break; } /* * Whether to ignore delimiter characters. `Pf' accepts its * first token as a parameter no matter what it looks like (if * it's text). */ switch (tok) { case (MDOC_Pf): igndelim = 1; break; default: igndelim = 0; break; } /* * Whether to ignore arguments: `St', for example, handles its * argument-like parameters as regular parameters. */ switch (tok) { case (MDOC_St): ignargs = 1; break; default: ignargs = 0; break; } arg = NULL; if ( ! ignargs) for (;;) { lastarg = *pos; c = mdoc_argv(mdoc, line, tok, &arg, pos, buf); if (ARGV_EOLN == c) break; if (ARGV_WORD == c) { *pos = lastarg; break; } else if (ARGV_ARG == c) continue; mdoc_argv_free(arg); return(0); } if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg)) return(0); mdoc->next = MDOC_NEXT_CHILD; for (j = 0; /* No sentinel. */; j++) { lastarg = *pos; if (j == maxargs && ! flushed) { if ( ! rewind_elem(mdoc, tok)) return(0); flushed = 1; } c = mdoc_args(mdoc, line, pos, buf, tok, &p); assert(ARGS_PHRASE != c); if (ARGS_ERROR == c) return(0); if (ARGS_PUNCT == c) break; if (ARGS_EOLN == c) break; if (-1 == (c = lookup(mdoc, line, lastarg, tok, p))) return(0); else if (MDOC_MAX != c) { if ( ! flushed && ! rewind_elem(mdoc, tok)) return(0); flushed = 1; if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf)) return(0); break; } if ( ! flushed && mdoc_isdelim(p) && ! igndelim) { if ( ! rewind_elem(mdoc, tok)) return(0); flushed = 1; } if ( ! mdoc_word_alloc(mdoc, line, lastarg, p)) return(0); mdoc->next = MDOC_NEXT_SIBLING; } if ( ! flushed && ! rewind_elem(mdoc, tok)) return(0); if (ppos > 1) return(1); return(append_delims(mdoc, line, pos, buf)); } /* * A constant macro is the simplest classification. It spans an entire * line. */ static int macro_constant(MACRO_PROT_ARGS) { int c, w, la; struct mdoc_arg *arg; char *p; assert( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)); arg = NULL; for (;;) { la = *pos; c = mdoc_argv(mdoc, line, tok, &arg, pos, buf); if (ARGV_EOLN == c) break; if (ARGV_WORD == c) { *pos = la; break; } else if (ARGV_ARG == c) continue; mdoc_argv_free(arg); return(0); } if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg)) return(0); mdoc->next = MDOC_NEXT_CHILD; for (;;) { la = *pos; w = mdoc_args(mdoc, line, pos, buf, tok, &p); assert(ARGS_PHRASE != c); if (ARGS_ERROR == w) return(0); if (ARGS_EOLN == w) break; c = ARGS_QWORD == w ? MDOC_MAX : lookup(mdoc, line, la, tok, p); if (MDOC_MAX != c && -1 != c) { if ( ! rewind_elem(mdoc, tok)) return(0); return(mdoc_macro(mdoc, c, line, la, pos, buf)); } else if (-1 == c) return(0); if ( ! mdoc_word_alloc(mdoc, line, la, p)) return(0); mdoc->next = MDOC_NEXT_SIBLING; } return(rewind_elem(mdoc, tok)); } /* ARGSUSED */ static int macro_obsolete(MACRO_PROT_ARGS) { return(pwarn(mdoc, line, ppos, WOBS)); } /* * 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(mdoc_nerr(mdoc, n, "macro scope still open on exit")); } return(rewind_last(mdoc, mdoc->first)); }