=================================================================== RCS file: /cvs/mandoc/Attic/macro.c,v retrieving revision 1.1 retrieving revision 1.66 diff -u -p -r1.1 -r1.66 --- mandoc/Attic/macro.c 2008/12/12 10:11:10 1.1 +++ mandoc/Attic/macro.c 2009/03/11 00:39:58 1.66 @@ -1,4 +1,4 @@ -/* $Id: macro.c,v 1.1 2008/12/12 10:11:10 kristaps Exp $ */ +/* $Id: macro.c,v 1.66 2009/03/11 00:39:58 kristaps Exp $ */ /* * Copyright (c) 2008 Kristaps Dzonsons * @@ -16,90 +16,1425 @@ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. */ +#include +#include #include +#include +#include -#include "roff.h" +#include "private.h" +/* + * 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. + */ + +/* FIXME: .Fl, .Ar, .Cd handling of `|'. */ + +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 */ + { macro_text, MDOC_PARSED }, /* Lk */ + { macro_text, MDOC_PARSED }, /* Mt */ + { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Brq */ + { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bro */ + { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Brc */ +}; + +const struct mdoc_macro * const mdoc_macros = __mdoc_macros; + + static int -macro_args_next(struct rofftree *tree, int *pos, char *buf, char **v) +perr(struct mdoc *mdoc, int line, int pos, int type) { - int i; + int c; - if (0 == buf[*pos]) - return(0); + 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); +} - if ('\"' == buf[*pos]) { - /* Syntax error: quotation marks not allowed. */ - return(-1); +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); +} - *v = &buf[*pos]; - while (buf[*pos] && ! isspace(buf[*pos])) - (*pos)++; +static int +scopewarn(struct mdoc *mdoc, enum mdoc_type type, + int line, int pos, const struct mdoc_node *p) +{ + const char *n, *t, *tt; - if (buf[*pos + 1] && '\\' == buf[*pos]) { - /* Syntax error: escaped whitespace not allowed. */ + 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); } - buf[i] = 0; + 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_Brc): + return(MDOC_Bro); + 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_Brq): + /* 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_Bro): + /* 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_Brc): + /* 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); } + /* - * Parses the following: + * 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: * - * .Xx foo bar baz ; foo "bar baz" ; ; - * ^---------- ^---------- + * .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_fl(struct rofftree *tree, int tok, int *pos, char *buf) +macro_text(MACRO_PROT_ARGS) { - int i, j, c, first; - char *args[ROFF_MAXLINEARG]; + int la, lastpunct, c, w; + struct mdoc_arg *arg; + char *p; - first = *pos == 0; + la = ppos; + lastpunct = 0; + arg = NULL; - for (j = 0; ; ) { - i = *pos; - c = macro_args_next(tree, *i, buf, args[j]); - if (-1 == c) + 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 != w); + + if (ARGS_ERROR == w) return(0); - if (0 == c) + if (ARGS_EOLN == w) break; + if (ARGS_PUNCT == w) + break; - /* Break at the next command. */ + /* Quoted words shouldn't be looked-up. */ - if (ROFF_MAX != (c = rofffindcallable(args[pos]))) { - if ( ! macro(tree, tok, argc, argv, i, p)) + 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 && ! rewind_elem(mdoc, tok)) return(0); - if ( ! parse(tree, c, pos, args)) + 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); + + /* Non-quote-enclosed punctuation. */ + + 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; } - /* Continue if we're just words. */ + /* 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 ( ! roffispunct(args[pos])) { - i++; + 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; } - /* Break if there's only remaining punctuation. */ + c = mdoc_args(mdoc, line, pos, buf, tok, &p); + assert(ARGS_PHRASE != c); - if (args[pos + 1] && roffispunct(args[pos + 1])) + if (ARGS_ERROR == c) + return(0); + if (ARGS_PUNCT == c) break; + if (ARGS_EOLN == c) + break; - /* If there are remaining words, start anew. */ + 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 ( ! macro(tree, tok, argc, argv, i, p)) + 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; + } - /* Spit out the punctuation. */ + 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 ( ! word(tree, tok, *args++)) + 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); - i++; + } + + 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)); }