Dennis Vadura <dvadura@watdragon.waterloo.edu> (05/13/91)
Submitted-by: Dennis Vadura <dvadura@watdragon.waterloo.edu>
Posting-number: Volume 19, Issue 50
Archive-name: dmake/part29
Supersedes: dmake-3.6: Volume 15, Issue 52-77
---- Cut Here and feed the following to sh ----
#!/bin/sh
# this is dmake.shar.29 (part 29 of a multipart archive)
# do not concatenate these parts, unpack them in order with /bin/sh
# file dmake/rulparse.c continued
#
if test ! -r _shar_seq_.tmp; then
echo 'Please unpack part 1 first!'
exit 1
fi
(read Scheck
if test "$Scheck" != 29; then
echo Please unpack part "$Scheck" next!
exit 1
else
exit 0
fi
) < _shar_seq_.tmp || exit 1
if test -f _shar_wnt_.tmp; then
sed 's/^X//' << 'SHAR_EOF' >> 'dmake/rulparse.c' &&
X be an illegal rule definition, and it returns 1 if it is a rule definition.
X */
int *state;
{
X TKSTR input; /* input string struct for token search */
X CELLPTR targets; /* list of targets if any */
X CELLPTR prereq; /* list of prereq if any */
X CELLPTR prereqtail; /* tail of prerequisite list */
X CELLPTR cp; /* temporary cell pointer for list making */
X char *result; /* temporary storage for result */
X char *tok; /* temporary pointer for tokens */
X char *set_dir; /* value of setdir attribute */
X char *brk; /* break char list for Get_token */
X char *firstrcp; /* first recipe line, from ; in rule line */
X t_attr attr; /* sum of attribute flags for current tgts*/
X t_attr at; /* temp place to keep an attribute code */
X int op; /* rule operator */
X int special; /* indicate special targets in rule */
X int percent; /* indicate percent rule target */
X int mixed_glob_prq; /* indicate mixed %-rule prereq possible */
X
X DB_ENTER( "Parse_rule_def" );
X
X op = 0;
X attr = 0;
X special = 0;
X percent = 0;
X set_dir = NIL( char );
X targets = NIL(CELL);
X prereq = NIL(CELL);
X prereqtail = NIL(CELL);
X mixed_glob_prq = 0;
X
X /* Check to see if the line is of the form:
X * targets : prerequisites; first recipe line
X * If so remember the first_recipe part of the line. */
X
X firstrcp = strchr( Buffer, ';' );
X if( firstrcp != NIL( char ) ) {
X *firstrcp++ = 0;
X firstrcp = _strspn( firstrcp, " \t" );
X }
X
X result = Expand( Buffer );
X for( brk=strchr(result,'\\'); brk != NIL(char); brk=strchr(brk,'\\') )
X if( brk[1] == '\n' )
X *brk = ' ';
X else
X brk++;
X
X DB_PRINT( "par", ("Scanning: [%s]", result) );
X
X SET_TOKEN( &input, result );
X brk = ":-^!";
X Def_targets = TRUE;
X
X /* Scan the input rule line collecting targets, the operator, and any
X * prerequisites. Stop when we run out of targets and prerequisites. */
X
X while( *(tok = Get_token( &input, brk, TRUE )) != '\0' )
X if( !op ) {
X /* we are scanning targets and attributes
X * check to see if token is an operator. */
X
X op = Rule_op( tok );
X
X if( !op ) {
X /* define a new cell, or get old cell */
X cp = Def_cell( tok );
X DB_PRINT( "par", ("tg_cell [%s]", tok) );
X
X if( at = _is_attribute( tok ) ) {
X /* Logically OR the attributes specified into one main
X * ATTRIBUTE mask. */
X
X if( at == A_SETDIR )
X if( set_dir != NIL( char ) )
X Warning( "Multiple .SETDIR attribute ignored" );
X else
X set_dir = _strdup( tok );
X
X attr |= at;
X }
X else {
X int tmp;
X
X tmp = _is_special( tok );
X if( _is_percent( tok ) ) percent++;
X
X if( percent )
X if( targets != NIL(CELL) )
X Fatal( "Multiple targets are not allowed in %% rules" );
X else
X cp->ce_flag |= F_PERCENT;
X
X if( special )
X Fatal( "Special target must appear alone", tok );
X else if( !(cp->ce_flag & F_MARK) ) {
X cp->ce_link = targets; /* targets are stacked in this list*/
X cp->ce_flag |= F_MARK | F_EXPLICIT;
X targets = cp;
X
X special = tmp;
X }
X else if( !(cp->ce_attr & A_LIBRARY) )
X Warning("Duplicate entry [%s] in target list",cp->CE_NAME);
X }
X }
X else {
X /* found an operator so empty out break list
X * and clear mark bits on target list, setting them all to F_USED */
X
X brk = "";
X for( cp=targets; cp != NIL(CELL); cp=cp->ce_link ) {
X cp->ce_flag ^= F_MARK;
X cp->ce_flag |= F_USED;
X }
X
X Def_targets = FALSE;
X }
X }
X else {
X /* Scanning prerequisites so build the prerequisite list. We use
X * F_MARK flag to make certain we have only a single copy of the
X * prerequisite in the list */
X
X cp = Def_cell( tok );
X
X if( _is_percent( tok ) ) {
X if( !percent && !attr )
X Fatal( "Syntax error in %% rule, missing %% target");
X mixed_glob_prq = 1;
X }
X
X if( cp->ce_flag & F_USED ) {
X if( cp->ce_attr & A_COMPOSITE )
X continue;
X else
X Fatal( "Detected circular dependency in graph at [%s]",
X cp->CE_NAME );
X }
X else if( !(cp->ce_flag & F_MARK) ) {
X DB_PRINT( "par", ("pq_cell [%s]", tok) );
X cp->ce_flag |= F_MARK;
X
X if( prereqtail == NIL(CELL) ) /* keep prereq's in order */
X prereq = cp;
X else
X prereqtail->ce_link = cp;
X
X prereqtail = cp;
X cp->ce_link = NIL(CELL);
X }
X else if( !(cp->ce_attr & A_LIBRARY) )
X Warning("Duplicate entry [%s] in prerequisite list",cp->CE_NAME);
X }
X
X /* Check to see if we have a percent rule that has only global
X * prerequisites. If so then set the flag so that later on, we don't issue
X * an error if such targets supply an empty set of rules. */
X
X if( percent && !mixed_glob_prq && (prereq != NIL(CELL)) )
X _sv_globprq_only = 1;
X
X /* It's ok to have targets with attributes, and no prerequisites, but it's
X * not ok to have no targets and no attributes, or no operator */
X
X if( !op ) {
X CLEAR_TOKEN( &input );
X DB_PRINT( "par", ("Not a rule [%s]", Buffer) );
X DB_RETURN( 0 );
X }
X
X if( !attr && targets == NIL(CELL) ) {
X Fatal( "Missing targets or attributes in rule" );
X if( set_dir != NIL( char )) FREE( set_dir );
X DB_RETURN( 0 );
X }
X
X /* We have established we have a legal rules line, so we must process it.
X * In doing so we must handle any special targets. Special targets must
X * appear alone possibly accompanied by attributes.
X * NOTE: special != 0 ==> targets != NIL(CELL) */
X
X if( prereqtail != NIL(CELL) ) prereqtail->ce_link = NIL(CELL);
X
X /* Clear out MARK bits used in duplicate checking. I originally wanted
X * to do this as the lists get processed but that got too error prone
X * so I bit the bullit and added these two loops. */
X
X for( cp=prereq; cp != NIL(CELL); cp=cp->ce_link ) cp->ce_flag &= ~F_MARK;
X for( cp=targets; cp != NIL(CELL); cp=cp->ce_link ) cp->ce_flag &= ~F_USED;
X
X /* Check to see if the previous rule line was bound if, not the call
X * Bind_rules_to_targets to go and bind the line */
X
X if( _sv_rules != NIL(STRING) ) Bind_rules_to_targets( F_DEFAULT );
X
X /* Add the first recipe line to the list */
X if( firstrcp != NIL( char ) )
X Add_recipe_to_list( firstrcp, TRUE, FALSE );
X
X /* Save these prior to calling _do_targets, since _build_graph needs the
X * _sv_setdir value for matching edges. */
X _sv_op = op;
X _sv_setdir = set_dir;
X
X if( special )
X _do_special( special, op, attr, set_dir, targets, prereq, state );
X else
X *state = _do_targets( op, attr, set_dir, targets, prereq );
X
X DB_RETURN( 1 );
}
X
X
PUBLIC int
Rule_op( op )/*
================
X Check the passed in op string and map it to one of the rule operators */
char *op;
{
X int ret = 0;
X
X DB_ENTER( "rule_op" );
X
X if( *op == TGT_DEP_SEP ) {
X ret = R_OP_CL;
X op++;
X
X /* All rule operations begin with a :, but may include any one of the
X * four modifiers. In order for the rule to be properly mapped we must
X * check for each of the modifiers in turn, building up our return bit
X * string. */
X
X while( *op && ret )
X switch( *op ) {
X case ':': ret |= R_OP_DCL; op++; break;
X case '!': ret |= R_OP_BG; op++; break;
X case '^': ret |= R_OP_UP; op++; break;
X case '-': ret |= R_OP_MI; op++; break;
X
X default : ret = 0; /* an invalid modifier, chuck whole string */
X }
X
X if( *op != '\0' ) ret = 0;
X }
X
X DB_RETURN( ret );
}
X
X
PUBLIC void
Add_recipe_to_list( rule, white_too, no_check )/*
=================================================
X Take the provided string and add it to the list of recipe lines
X we are saving to be added to the list of targets we have built
X previously. If white_too == TRUE add the rule EVEN IF it contains only
X whitespace. */
char *rule;
int white_too;
int no_check;
{
X DB_ENTER( "Add_recipe_to_list" );
X
X if( rule != NIL( char ) && (*rule != '\0' || white_too) ) {
X DB_PRINT( "par", ("Adding recipe [%s]", rule) );
X _sv_crule = Def_recipe( rule, _sv_crule, white_too, no_check );
X
X if( _sv_rules == NIL(STRING) )
X _sv_rules = _sv_crule;
X }
X
X DB_VOID_RETURN;
}
X
X
PUBLIC void
Bind_rules_to_targets( flag )/*
===============================
X Take the rules we have defined and bind them with proper attributes
X to the targets that were previously defined in the parse. The
X attributes that get passed here are merged with those that are were
X previously defined. (namely F_SINGLE) */
int flag;
{
X CELLPTR tg; /* pointer to current target in list */
X LINKPTR lp; /* pointer to link cell */
X int magic; /* TRUE if target is .xxx.yyy form */
X int tflag; /* TRUE if we assigned targets here */
X
X DB_ENTER( "Bind_rules_to_targets" );
X
X /* This line is needed since Parse may call us twice when the last
X * GROUP rule appears at the end of file. In this case the rules
X * have already been bound and we want to ignore them. */
X
X if( _sv_targets == NIL(CELL) ) { DB_VOID_RETURN; }
X
X tflag = FALSE;
X flag |= (_sv_flag & F_SINGLE);
X
X for( tg = _sv_targets; tg != NIL(CELL); tg = tg->ce_link ) {
X DB_PRINT( "par", ("Binding to %s, %04x", tg->CE_NAME, tg->ce_flag) );
X magic = tg->ce_flag & F_PERCENT;
X
X /* Check to see if we had a rule of the form '%.o : a.h b.h ; xxx'
X * In which case we must build a NULL prq node to hold the recipe */
X if( _sv_globprq_only && (_sv_rules != NIL(STRING)) )
X _build_graph( _sv_op, tg, NIL(CELL) );
X
X /* NOTE: For targets that are magic we ignore any previously defined
X * rules. ie. We throw away the old definition and use the new. */
X if( !(tg->ce_flag & F_MULTI) && !magic && (tg->CE_RECIPE != NIL(STRING))
X && !_sp_target && (_sv_rules != NIL(STRING)) )
X Fatal( "Multiply defined recipe for target %s", tg->CE_NAME );
X
X if( (magic || _sp_target) && (_sv_rules == NIL(STRING)) &&
X !(tg->ce_flag & F_SPECIAL) && !_sv_globprq_only )
X Warning( "Empty recipe for special target %s", tg->CE_NAME );
X
X if( magic ) {
X CELLPTR ep;
X
X for( ep=_sv_edgel; ep != NIL(CELL); ep=ep->ce_link ) {
X _set_attributes( _sv_attro, _sv_setdir, ep );
X ep->ce_flag |= (F_TARGET|flag);
X
X if( _sv_rules != NIL(STRING) ) {
X ep->ce_recipe = _sv_rules;
X ep->ce_indprq = _sv_glb_prq;
X }
X }
X }
X else {
X tg->ce_attr |= _sv_attr;
X tg->ce_flag |= flag;
X
X if( _sv_rules != NIL(STRING) ) {
X tg->ce_recipe = _sv_rules;
X tg->ce_flag |= F_RULES | F_TARGET;
X
X /* Bind the current set of prerequisites as belonging to the
X * original recipe given for the target */
X for( lp=tg->ce_prq; lp != NIL(LINK); lp = lp->cl_next )
X if( !(lp->cl_flag & F_USED) ) lp->cl_flag |= F_TARGET;
X }
X else for( lp=tg->ce_prq; lp != NIL(LINK); lp = lp->cl_next )
X lp->cl_flag |= F_USED;
X }
X
X if( !Target && !magic && !(tg->ce_flag & F_SPECIAL) ) {
X Add_prerequisite( Root, tg, FALSE, TRUE );
X
X tg->ce_flag |= F_TARGET;
X tg->ce_attr |= A_FRINGE;
X tflag = TRUE;
X }
X }
X
X if( tflag ) Target = TRUE;
X if( _sv_setdir ) FREE(_sv_setdir);
X _sv_rules = NIL(STRING);
X _sv_crule = NIL(STRING);
X _sv_targets = NIL(CELL);
X _sv_glb_prq = NIL(LINK);
X _sv_edgel = NIL(CELL);
X _sp_target = FALSE;
X _sv_globprq_only = 0;
X
X DB_VOID_RETURN;
}
X
X
X
PUBLIC int
Set_group_attributes( list )/*
==============================
X Scan list looking for the standard @ and - (as in recipe line defs)
X and set the flags accordingly so that they apply when we bind the
X rules to the appropriate targets. */
char *list;
{
X int res = (*_strspn(list,"@-%+ \t") == '[');
X if( res ) _sv_attr |= Rcp_attribute(list);
X return(res);
}
X
X
static void
_do_special( special, op, attr, set_dir, target, prereq, state )/*
==================================================================
X Process a special target. So far the only special targets we have
X are those recognized by the _is_special function.
X
X target is always only a single special target.
X
X NOTE: For the cases of .IMPORT, and .INCLUDE, the cells created by the
X parser are never freed. This is due to the fact that it is too much
X trouble to get them out of the hash table once they are defined, and
X if they are per chance used again it will be ok, anyway, since the
X cell is not really used by the code below. */
X
int special;
int op;
t_attr attr;
char *set_dir;
CELLPTR target;
CELLPTR prereq;
int *state;
{
X HASHPTR hp; /* pointer to macro def cell */
X CELLPTR cp; /* temporary pointer into cells list */
X CELLPTR dp; /* pointer to directory dir cell */
X LINKPTR lp; /* pointer at prerequisite list */
X char *dir; /* current dir to prepend */
X char *path; /* resulting path to try to read */
X char *name; /* File name for processing a .INCLUDE */
X char *tmp; /* temporary string pointer */
X FILE *fil; /* File descriptor returned by Openfile */
X
X DB_ENTER( "_do_special" );
X
X target->ce_flag = F_SPECIAL; /* mark the target as special */
X
X switch( special ) {
X case ST_EXPORT:
X for( ; prereq != NIL(CELL); prereq = prereq->ce_link ) {
X DB_PRINT( "par", ("Exporting [%s]", prereq->CE_NAME) );
X hp = GET_MACRO( prereq->CE_NAME );
X
X if( hp != NIL(HASH) ) {
X char *tmpstr = hp->ht_value;
X
X if( tmpstr == NIL(char) ) tmpstr = "";
X
X if( Write_env_string( prereq->CE_NAME, tmpstr ) != 0 )
X Warning( "Could not export %s", prereq->CE_NAME );
X }
X }
X break;
X
X case ST_IMPORT:
X for( ; prereq != NIL(CELL); prereq = prereq->ce_link ) {
X char *tmpstr;
X
X DB_PRINT( "par", ("Importing [%s]", prereq->CE_NAME) );
X
X if( strcmp(prereq->CE_NAME, ".EVERYTHING") == 0 ) {
X t_attr sattr = Glob_attr;
X Glob_attr |= A_SILENT;
X
X ReadEnvironment();
X
X Glob_attr = sattr;
X }
X else {
X tmpstr = Read_env_string( prereq->CE_NAME );
X
X if( tmpstr != NIL(char) )
X Def_macro( prereq->CE_NAME,tmpstr,M_EXPANDED | M_LITERAL);
X else
X if( !((Glob_attr | attr) & A_IGNORE) )
X Fatal("Imported macro `%s' not found",prereq->CE_NAME);
X }
X }
X
X attr &= ~A_IGNORE;
X break;
X
X case ST_INCLUDE:
X {
X int ignore = (((Glob_attr | attr) & A_IGNORE) != 0);
X int pushed = FALSE;
X LINKPTR prqlnk = NIL(LINK);
X LINKPTR prqlst = NIL(LINK);
X
X if( prereq == NIL(CELL) ) Fatal( "No .INCLUDE file(s) specified" );
X
X dp = Def_cell( ".INCLUDEDIRS" );
X
X if( (attr & A_SETDIR) && *(dir = strchr(set_dir, '=')+1) )
X pushed = Push_dir( dir, ".INCLUDE", ignore );
X
X for( cp=prereq; cp != NIL(CELL); cp = cp->ce_link ) {
X LINKPTR ltmp;
X TALLOC(ltmp, 1, LINK);
X ltmp->cl_prq = cp;
X
X if( prqlnk == NIL(LINK) )
X prqlst = ltmp;
X else
X prqlnk->cl_next = ltmp;
X
X prqlnk = ltmp;
X }
X
X for( ; prqlst != NIL(LINK); FREE(prqlst), prqlst=prqlnk ) {
X prqlnk = prqlst->cl_next;
X cp = prqlst->cl_prq;
X name = cp->CE_NAME;
X
X if( *name == '<' ) {
X /* We have a file name enclosed in <....>
X * so get rid of the <> arround the file name */
X
X name++;
X if( (tmp = strrchr( name, '>' )) != NIL( char ) )
X *tmp = 0;
X
X if( If_root_path( name ) )
X fil = Openfile( name, FALSE, FALSE );
X else
X fil = NIL(FILE);
X }
X else
X fil = Openfile( name, FALSE, FALSE );
X
X if( fil == NIL(FILE) ) { /*if true ==> not found in current dir*/
X /* Now we must scan the list of prerequisites for .INCLUDEDIRS
X * looking for the file in each of the specified directories.
X * if we don't find it then we issue an error. The error
X * message is suppressed if the .IGNORE attribute of attr is
X * set. If a file is found we call Parse on the file to
X * perform the parse and then continue on from where we left
X * off. */
X
X for(lp=dp->CE_PRQ; lp && fil == NIL(FILE); lp=lp->cl_next) {
X dir = lp->cl_prq->CE_NAME;
X if( strchr(dir, '$') ) dir = Expand(dir);
X path = Build_path( dir, name );
X
X DB_PRINT( "par", ("Trying to include [%s]", path) );
X
X fil = Openfile( path, FALSE, FALSE );
X if( dir != lp->cl_prq->CE_NAME ) FREE(dir);
X }
X }
X
X if( fil != NIL(FILE) )
X Parse( fil );
X else if( !((Glob_attr | attr) & A_IGNORE) )
X Fatal( "Include file %s, not found", name );
X }
X
X if( pushed ) Pop_dir(FALSE);
X attr &= ~(A_IGNORE|A_SETDIR);
X }
X break;
X
X case ST_SOURCE:
X /* case ST_SUFFIXES: */
X if( prereq != NIL(CELL) )
X _do_targets( op & (R_OP_CL | R_OP_MI | R_OP_UP), attr, set_dir,
X target, prereq );
X else {
X /* The old semantics of .SOURCE were that an empty list of
X * prerequisites clears the .SOURCE list. So we must implement
X * that here as a clearout prerequisite operation. Since this is
X * a standard operation with the :- opcode we can simply call the
X * proper routine with the target cell and it should do the trick
X */
X
X if( op == R_OP_CL || (op & R_OP_MI) )
X Clear_prerequisites( target );
X }
X
X op &= ~(R_OP_MI | R_OP_UP);
X break;
X
X case ST_KEEP:
X if( Keep_state != NIL(char) ) break;
X Def_macro( ".KEEP_STATE", "_state.mk", M_EXPANDED );
X break;
X
X case ST_REST:
X /* The rest of the special targets can all take rules, as such they
X * must be able to affect the state of the parser. */
X
X {
X int s_targ = Target;
X
X Target = TRUE;
X _sp_target = TRUE;
X *state = _do_targets( op, attr, set_dir, target, prereq );
X Target = s_targ;
X
X target->ce_flag |= F_TARGET;
X
X attr = A_DEFAULT;
X op = R_OP_CL;
X }
X break;
X
X default:break;
X }
X
X if( op != R_OP_CL ) Warning( "Modifier(s) for operator ignored" );
X if( attr != A_DEFAULT ) Warning( "Extra attributes ignored" );
X
X DB_VOID_RETURN;
}
X
X
X
static int
_do_targets( op, attr, set_dir, targets, prereq )/*
================================================= */
int op;
t_attr attr;
char *set_dir;
CELLPTR targets;
CELLPTR prereq;
{
X CELLPTR tg1; /* temporary target pointer */
X CELLPTR tp1; /* temporary prerequisite pointer */
X char *p; /* temporary char pointer */
X CELLPTR prev_cell; /* pointer for .UPDATEALL processing */
X CELLPTR first_cell; /* pointer for .UPDATEALL processing */
X int update; /* A_UPDATEALL attribute flag */
X int smagic = 0; /* collective amount of magic :-) */
X
X DB_ENTER( "_do_targets" );
X
X if( update = ((attr & A_UPDATEALL) != 0) )
X if( targets == NIL(CELL) )
X Fatal( ".UPDATEALL attribute requires non-empty list of targets" );
X
X first_cell = prev_cell = NIL(CELL);
X for( tg1 = targets; tg1 != NIL(CELL); tg1 = tg1->ce_link ) {
X /* Check each target. Check for inconsistencies between :: and : rule
X * sets. :: may follow either : or :: but not the reverse.
X *
X * Any targets that contain :: rules are represented by a prerequisite
X * list hanging off the main target cell where each of the prerequisites
X * is a copy of the target cell but is not entered into the hash table.
X */
X int magic = (tg1->ce_flag & F_PERCENT) && !(tg1->ce_flag & F_MAGIC);
X smagic |= magic;
X
X if( !(op & R_OP_DCL ) && (tg1->ce_flag & F_MULTI) && !magic )
X Fatal( "Inconsistency in inference rules for %s", tg1->CE_NAME );
X
X if( magic )
X do {
X _build_graph( op, tg1, prereq );
X if( prereq != NIL(CELL) ) prereq = prereq->ce_link;
X } while( prereq != NIL(CELL) );
X else if( !(tg1->ce_flag & F_SPECIAL) &&
X (prereq == NIL(CELL)) &&
X (p = _is_magic( tg1->CE_NAME )) != NIL(char))
X smagic |= _do_magic( op, p, tg1, prereq, attr, set_dir );
X else if( op & R_OP_DCL ) {
X CELLPTR tmp_cell = _make_multi(tg1);
X targets = _replace_cell( targets, tg1, tmp_cell );
X tg1 = tmp_cell;
X }
X
X if( !magic ) _set_attributes( attr, set_dir, tg1 );
X
X if( update ) {
X if( smagic ) Fatal( ".UPDATEALL attribute not legal in meta rule" );
X
X /* Check this as it would break another circular .UPATEALL list if
X * we blindly assign it and it is part of another list already. */
X if( tg1->ce_all != NIL(CELL) )
X Fatal( "Target [%s] appears on multiple .UPDATEALL lists" );
X
X tg1->ce_all = prev_cell;
X if( prev_cell == NIL(CELL) ) first_cell = tg1;
X prev_cell = tg1;
X }
X
X /* Build the proper prerequisite list of the target. If the `-',
X * modifier was used clear the prerequisite list before adding any
X * new prerequisites. Else add them to the head/tail as appropriate.
X *
X * If the target has F_PERCENT set then no prerequisites are used. */
X
X if( !(tg1->ce_flag & F_PERCENT) ) {
X if( op & R_OP_MI ) Clear_prerequisites( tg1 );
X
X if( (op & R_OP_UP) && (tg1->ce_prq != NIL(LINK)) )
X _stick_at_head( tg1, prereq );
X else for( tp1=prereq; tp1 != NIL(CELL); tp1 = tp1->ce_link )
X Add_prerequisite( tg1, tp1, FALSE, FALSE );
X }
X else if( op & (R_OP_MI | R_OP_UP) )
X Warning( "Modifier(s) `^!' for %-meta target ignored" );
X }
X
X if( first_cell != NIL(CELL) ) first_cell->ce_all = prev_cell;
X
X
X /* Check to see if we have NO targets but some attributes. IF so then
X * apply all of the attributes to the complete list of prerequisites.
X * Cannot happen for F_PERCENT targets. (ie. in that case targets is always
X * not NIL) */
X
X if( (targets == NIL(CELL)) && attr )
X if( prereq != NIL(CELL) )
X for( tp1=prereq; tp1 != NIL(CELL); tp1 = tp1->ce_link )
X _set_attributes( attr, set_dir, tp1 );
X else
X _set_global_attr( attr );
X
X /* Fix up the ce_link pointers so that when we go to attach a recipe in
X * Bind_targets to rules we get the right thing if it's an .UPDATEALL ::
X * recipe */
X if( update ) {
X for( tp1=NIL(CELL),tg1=prev_cell; tg1!=first_cell; tg1=tg1->ce_all ) {
X tg1->ce_link = tp1;
X tp1 = tg1;
X }
X tg1->ce_link = tp1;
X targets = first_cell;
X }
X
X /* Now that we have built the lists of targets, the parser must parse the
X * rules if there are any. However we must start the rule list with the
X * rule specified as via the ; kludge, if there is one */
X _sv_targets = targets;
X _sv_attr = _sv_attro = attr;
X _sv_flag = ((op & R_OP_BG) ? F_SINGLE : F_DEFAULT);
X
X DB_RETURN( RULE_SCAN );
}
X
X
static int
_do_magic( op, dot, target, prereq, attr, set_dir )/*
=====================================================
X This function takes a magic target of the form .<chars>.<chars> or
X .<chars> and builds the appropriate % rules for that target.
X
X The function builds the % rule, `%.o : %.c' from .c.o, and
X `%.a :' from .a */
X
int op;
char *dot;
CELLPTR target;
CELLPTR prereq;
t_attr attr;
char *set_dir;
{
X CELLPTR tg;
X CELLPTR prq;
X char *tmp, *tmp2;
X
X DB_ENTER( "_do_magic" );
X
X if( prereq != NIL(CELL) )
X Warning( "Ignoring prerequisites of old style meta-target" );
X
X if( dot == target->CE_NAME ) { /* its of the form .a */
X tg = Def_cell( "%" ); /* ==> no prerequisite */
X tmp = _build_meta( target->CE_NAME );
X prq = Def_cell( tmp );
X FREE( tmp );
X
X _build_graph( op, tg, prq );
X }
X else {
X tmp = _build_meta( dot );
X tg = Def_cell( tmp );
X FREE( tmp );
X
X tmp = _build_meta( tmp2 = _substr( target->CE_NAME, dot ) );
X prq = Def_cell( tmp );
X FREE( tmp );
X FREE( tmp2 );
X
X _build_graph( op, tg, prq );
X }
X
X tg->ce_flag |= F_PERCENT;
X target->ce_flag |= (F_MAGIC|F_PERCENT);
X
X _set_attributes( attr, set_dir, tg );
X
X DB_RETURN(1);
}
X
X
static CELLPTR
_replace_cell( lst, cell, rep )
CELLPTR lst;
CELLPTR cell;
CELLPTR rep;
{
X register CELLPTR tp;
X
X if( lst == cell ) {
X rep->ce_link = lst->ce_link;
X lst = rep;
X }
X else {
X for( tp=lst; tp->ce_link != cell; tp=tp->ce_link );
X rep->ce_link = tp->ce_link->ce_link;
X tp->ce_link = rep;
X }
X
X return(lst);
}
X
X
static char *
_build_meta( name )/*
=====================
X Check to see if the name is of the form .c~ if so and if Augmake
X translation is enabled then return s.%.c, else return %.suff, where if the
X suffix ends in '~' then leave it be.*/
char *name;
{
X char *tmp;
X int test = Augmake ? name[strlen(name)-1] == '~' : 0;
X
X tmp = _strjoin( test ? "s.%" : "%", name, -1, FALSE);
X if( test ) tmp[ strlen(tmp)-1 ] = '\0';
X
X return(tmp);
}
X
X
X
static void
_build_graph( op, target, prereq )/*
====================================
X This function is called to build the graph for the % rule given by
X target : prereq cell combination. This function assumes that target
X is a % target and that prereq is a single % prerequisite. R_OP_CL
X rules replace existing rules if any, only R_OP_CL works for meta-rules.
X %.o :: %.c is meaningless.
X
X It also assumes that target cell has F_PERCENT set already. */
int op;
CELLPTR target;
CELLPTR prereq;
{
X LINKPTR edl;
X CELLPTR edge;
X int match;
X
X DB_ENTER( "_build_graph" );
X DB_PRINT( "%", ("Building graph for [%s : %s]", target->CE_NAME,
X (prereq == NIL(CELL)) ? "" : prereq->CE_NAME) );
X
X if( prereq != NIL(CELL) ) {
X char *name = prereq->CE_NAME;
X int len = strlen(name);
X
X if( *name == '\'' && name[len-1]=='\'' ){
X _add_global_prereq( prereq );
X name[len-1] = '\0';
X strcpy(name, name+1);
X DB_VOID_RETURN;
X }
X }
X
X /* Search the list of prerequisites for the current target and see if
X * any of them match the current %-meta : prereq pair. NOTE that %-metas
X * are built as if they were F_MULTI targets. */
X
X match = FALSE;
X for( edl=target->ce_prq; edl != NIL(LINK); edl=edl->cl_next ) {
X edge = edl->cl_prq;
X
X DB_PRINT( "%", ("Trying to match [%s]", edge?edge->CE_NAME:"(nil)") );
X
X if( (!edge->ce_prq && !prereq)
X || ( edge->ce_prq->cl_prq == prereq
X && ( edge->ce_dir == _sv_setdir
X || ( edge->ce_dir
X && _sv_setdir
X && !strcmp(edge->ce_dir,strchr(_sv_setdir,'=')+1)
X )
X )
X )
X ) {
X match = TRUE;
X break;
X }
X }
X
X if( match ) {
X /* match is TRUE hence, we found an edge joining the target and the
X * prerequisite so reset the new edge's how values to reflect the new
X * recipe etc. */
X DB_PRINT( "%", ("It's an old edge") );
X
X edge->ce_dir = NIL(char);
X edge->ce_flag &= (F_PERCENT|F_MAGIC|F_DFA);
X edge->ce_attr &= A_NOINFER;
X }
X else {
X DB_PRINT( "%", ("Adding a new edge") );
X
X if( !(target->ce_flag & F_DFA) ) {
X Add_nfa( target->CE_NAME );
X target->ce_flag |= F_DFA;
X }
X edge = _make_multi(target);
X if( prereq ) Add_prerequisite(edge, prereq, FALSE, TRUE);
X }
X
X if( op & R_OP_DCL )
X Warning( "'::' operator for meta-target '%s' ignored, ':' operator assumed.",
X target->CE_NAME );
X
X edge->ce_link = _sv_edgel;
X _sv_edgel = edge;
X _sv_globprq_only = 0;
X
X DB_VOID_RETURN;
}
X
X
static CELLPTR
_make_multi( tg )
CELLPTR tg;
{
X CELLPTR cp;
X
X /* This first handle the case when a : foo ; exists prior to seeing
X * a :: fee; */
X if( !(tg->ce_flag & F_MULTI) && (tg->ce_prq || tg->ce_recipe) ) {
X TALLOC(cp, 1, CELL);
X *cp = *tg;
X
X tg->ce_prq = NIL(LINK);
X tg->ce_flag |= F_RULES|F_MULTI|F_TARGET;
X tg->ce_attr |= A_SEQ;
X tg->ce_recipe = NIL(STRING);
X tg->ce_dir = NIL(char);
X cp->ce_count = ++tg->ce_index;
X
X Add_prerequisite(tg, cp, FALSE, TRUE);
X }
X
X TALLOC(cp, 1, CELL);
X *cp = *tg;
X
X if( !(tg->ce_flag & F_MULTI) ) {
X tg->ce_prq = NIL(LINK);
X tg->ce_flag |= F_RULES|F_MULTI|F_TARGET;
X tg->ce_attr |= A_SEQ;
X tg->ce_recipe = NIL(STRING);
X tg->ce_dir = NIL(char);
X }
X else {
X cp->ce_flag &= ~(F_RULES|F_MULTI);
X cp->ce_attr &= ~A_SEQ;
X cp->ce_prq = NIL(LINK);
X cp->ce_index = 0;
X }
X cp->ce_count = ++tg->ce_index;
X cp->ce_flag |= F_TARGET;
X
X Add_prerequisite(tg, cp, FALSE, TRUE);
X return(cp);
}
X
X
static void
_add_global_prereq( pq )/*
==========================
X Prerequisite is a non-% prerequisite for a %-rule target, add it to
X the target's list of global prerequsites to add on match */
CELLPTR pq;
{
X register LINKPTR ln;
X
X TALLOC( ln, 1, LINK );
X ln->cl_next = _sv_glb_prq;
X ln->cl_prq = pq;
X _sv_glb_prq = ln;
}
X
X
X
static void
_set_attributes( attr, set_dir, cp )/*
======================================
X Set the appropriate attributes for a cell */
t_attr attr;
char *set_dir;
CELLPTR cp;
{
X char *dir;
X
X DB_ENTER( "_set_attributes" );
X
X /* If .SETDIR attribute is set then we have at least .SETDIR= in the
X * set_dir string. So go and fishout what is at the end of the =.
X * If not set and not NULL then propagate it to the target cell. */
X
X if( attr & A_SETDIR ) {
X dir = strchr( set_dir, '=' ) + 1;
X
X if( cp->ce_dir )
X Warning( "Multiple .SETDIR for %s ignored", cp->CE_NAME );
X else
X if( *dir ) cp->ce_dir = _strdup(dir);
X }
X cp->ce_attr |= attr; /* set rest of attributes for target */
X
X DB_VOID_RETURN;
}
X
X
X
static void
_set_global_attr( attr )/*
==========================
X Handle the setting of the global attribute functions based on
X The attribute flags set in attr. */
t_attr attr;
{
X int flag;
X
X /* Some compilers can't handle a switch on a long, and t_attr is now a long
X * integer on some systems. foey! */
X for( flag = MAX_ATTR; flag; flag >>= 1 )
X if( flag & attr )
X if( flag == A_PRECIOUS) Def_macro(".PRECIOUS", "y", M_EXPANDED);
X else if( flag == A_SILENT) Def_macro(".SILENT", "y", M_EXPANDED);
X else if( flag == A_IGNORE ) Def_macro(".IGNORE", "y", M_EXPANDED);
X else if( flag == A_EPILOG ) Def_macro(".EPILOG", "y", M_EXPANDED);
X else if( flag == A_PROLOG ) Def_macro(".PROLOG", "y", M_EXPANDED);
X else if( flag == A_NOINFER ) Def_macro(".NOINFER", "y", M_EXPANDED);
X else if( flag == A_SEQ ) Def_macro(".SEQUENTIAL","y", M_EXPANDED);
X else if( flag == A_SHELL ) Def_macro(".USESHELL", "y", M_EXPANDED);
X else if( flag == A_MKSARGS ) Def_macro(".MKSARGS", "y", M_EXPANDED);
X else if( flag == A_SWAP ) Def_macro(".SWAP", "y", M_EXPANDED);
X
X attr &= ~A_GLOB;
X if( attr ) Warning( "Non global attribute(s) ignored" );
}
X
X
X
static void
_stick_at_head( cp, pq )/*
==========================
X Add the prerequisite list to the head of the existing prerequisite
X list */
X
CELLPTR cp; /* cell for target node */
CELLPTR pq; /* list of prerequisites to add */
{
X DB_ENTER( "_stick_at_head" );
X
X if( pq->ce_link != NIL(CELL) ) _stick_at_head( cp, pq->ce_link );
X Add_prerequisite( cp, pq, TRUE, FALSE );
X
X DB_VOID_RETURN;
}
X
X
X
static t_attr
_is_attribute( name )/*
=======================
X Check the passed name against the list of valid attributes and return the
X attribute index if it is, else return 0, indicating the name is not a valid
X attribute. The present attributes are defined in dmake.h as A_xxx #defines,
X with the corresponding makefile specification: (note they must be named
X exactly as defined below)
X
X Valid attributes are: .IGNORE, .SETDIR=, .SILENT, .PRECIOUS, .LIBRARY,
X .EPILOG, .PROLOG, .LIBRARYM, .SYMBOL, .UPDATEALL,
X .USESHELL, .NOINFER, .PHONY, .SWAP, .SEQUENTIAL
X .NOSTATE, .MKSARGS
X
X NOTE: The strcmp's are OK since at most three are ever executed for any
X one attribute check, and that happens only when we can be fairly
X certain we have an attribute. */
char *name;
{
X t_attr attr = 0;
X
X DB_ENTER( "_is_attribute" );
X
X if( *name++ == '.' )
X switch( *name )
X {
X case 'E': attr = (strcmp(name, "EPILOG")) ? 0 : A_EPILOG; break;
X case 'I': attr = (strcmp(name, "IGNORE")) ? 0 : A_IGNORE; break;
X case 'L': attr = (strcmp(name, "LIBRARY")) ? 0 : A_LIBRARY; break;
X case 'M': attr = (strcmp(name, "MKSARGS")) ? 0 : A_MKSARGS; break;
X
X case 'N':
X if( !strcmp(name, "NOINFER") ) attr = A_NOINFER;
X else if( !strcmp(name, "NOSTATE")) attr = A_NOSTATE;
X else attr = 0;
X break;
X
X case 'U':
X if( !strcmp(name, "UPDATEALL") ) attr = A_UPDATEALL;
X else if( !strcmp(name, "USESHELL")) attr = A_SHELL;
X else attr = 0;
X break;
X
X case 'P':
X if( !strcmp(name, "PRECIOUS") ) attr = A_PRECIOUS;
X else if( !strcmp(name, "PROLOG") ) attr = A_PROLOG;
X else if( !strcmp(name, "PHONY") ) attr = A_PHONY;
X else attr = 0;
X break;
X
X case 'S':
X if( !strncmp(name, "SETDIR=", 7) ) attr = A_SETDIR;
X else if( !strcmp(name, "SILENT") ) attr = A_SILENT;
X else if( !strcmp(name, "SYMBOL") ) attr = A_SYMBOL;
X else if( !strcmp(name, "SEQUENTIAL")) attr = A_SEQ;
X else if( !strcmp(name, "SWAP")) attr = A_SWAP;
X else attr = 0;
X break;
X }
X
X DB_RETURN( attr );
}
X
X
X
static int
_is_special( tg )/*
===================
X This function returns TRUE if the name passed in represents a special
X target, otherwise it returns false. A special target is one that has
X a special meaning to dmake, and may require processing at the time that
X it is parsed.
X
X Current Special targets are:
X .GROUPPROLOG .GROUPEPILOG .INCLUDE .IMPORT
X .EXPORT .SOURCE .SUFFIXES .ERROR
X .INCLUDEDIRS .MAKEFILES .REMOVE .KEEP_STATE
*/
char *tg;
{
X DB_ENTER( "_is_special" );
X
X if( *tg++ != '.' ) DB_RETURN( 0 );
X
X switch( *tg )
X {
X case 'I':
X if( !strcmp( tg, "IMPORT" ) ) DB_RETURN( ST_IMPORT );
X else if( !strcmp( tg, "INCLUDE" ) ) DB_RETURN( ST_INCLUDE );
X else if( !strcmp( tg, "INCLUDEDIRS" )) DB_RETURN( ST_REST );
X break;
X
X case 'M':
X if( !strcmp( tg, "MAKEFILES" ) ) DB_RETURN( ST_REST );
X break;
X
X case 'E':
X if( !strcmp( tg, "ERROR" ) ) DB_RETURN( ST_REST );
X else if( !strcmp( tg, "EXPORT" ) ) DB_RETURN( ST_EXPORT );
X break;
X
X case 'G':
X if( !strcmp( tg, "GROUPPROLOG" )) DB_RETURN( ST_REST );
X else if( !strcmp( tg, "GROUPEPILOG" )) DB_RETURN( ST_REST );
X break;
X
X case 'K':
X if( !strcmp( tg, "KEEP_STATE" ) ) DB_RETURN( ST_KEEP );
X break;
X
X case 'R':
X if( !strcmp( tg, "REMOVE" ) ) DB_RETURN( ST_REST );
X break;
X
X case 'S':
X if( !strncmp( tg, "SOURCE", 6 ) ) DB_RETURN( ST_SOURCE );
X else if( !strncmp(tg, "SUFFIXES", 8 )) DB_RETURN( ST_SOURCE );
X break;
X }
X
X DB_RETURN( 0 );
}
X
X
X
static int
_is_percent( np )/*
===================
X return TRUE if np points at a string containing a % sign */
char *np;
{
X return( (strchr(np,'%') && (*np != '\'' && np[strlen(np)-1] != '\'')) ?
X TRUE : FALSE );
}
X
X
static char *
_is_magic( np )/*
=================
X return TRUE if np points at a string of the form
X .<chars>.<chars> or .<chars>
X where chars are only alpha characters.
X
X NOTE: reject target if it begins with ./ or ../ */
char *np;
{
X register char *n;
X
X n = np;
X if( *n != '.' ) return( NIL(char) );
X if (strchr(DirBrkStr, *(n+1))!=NULL || *(n+1) == '.' )
X return (NIL(char));
X
X for( n++; isgraph(*n) && (*n != '.'); n++ );
X
X if( *n != '\0' ) {
X if( *n != '.' ) return( NIL(char) );
X for( np = n++; isgraph( *n ) && (*n != '.'); n++ );
X if( *n != '\0' ) return( NIL(char) );
X }
X else if( !Augmake )
X return( NIL(char) );
X
X /* np points at the second . of .<chars>.<chars> string.
X * if the special target is of the form .<chars> then np points at the
X * first . in the token. */
X
X return( np );
}
X
SHAR_EOF
chmod 0640 dmake/rulparse.c ||
echo 'restore of dmake/rulparse.c failed'
Wc_c="`wc -c < 'dmake/rulparse.c'`"
test 39277 -eq "$Wc_c" ||
echo 'dmake/rulparse.c: original size 39277, current size' "$Wc_c"
rm -f _shar_wnt_.tmp
fi
# ============= dmake/stat.c ==============
if test -f 'dmake/stat.c' -a X"$1" != X"-c"; then
echo 'x - skipping dmake/stat.c (File already exists)'
rm -f _shar_wnt_.tmp
else
> _shar_wnt_.tmp
sed 's/^X//' << 'SHAR_EOF' > 'dmake/stat.c' &&
/* RCS -- $Header: /u2/dvadura/src/generic/dmake/src/RCS/stat.c,v 1.1 91/05/06 15:23:29 dvadura Exp $
-- SYNOPSIS -- bind a target name to a file.
--
-- DESCRIPTION
-- This file contains the code to go and stat a target. The stat rules
-- follow a predefined order defined in the comment for Stat_target.
--
-- AUTHOR
-- Dennis Vadura, dvadura@watdragon.uwaterloo.ca
-- CS DEPT, University of Waterloo, Waterloo, Ont., Canada
--
-- COPYRIGHT
-- Copyright (c) 1990 by Dennis Vadura. All rights reserved.
--
-- This program is free software; you can redistribute it and/or
-- modify it under the terms of the GNU General Public License
-- (version 1), as published by the Free Software Foundation, and
-- found in the file 'LICENSE' included with this distribution.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warrant of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
--
-- LOG
-- $Log: stat.c,v $
X * Revision 1.1 91/05/06 15:23:29 dvadura
X * dmake Release Version 3.7
X *
*/
X
#include "extern.h"
X
X
static int _check_dir_list ANSI((CELLPTR, CELLPTR, int));
X
#ifdef DBUG
X /* Just a little ditty for debugging this thing */
X static time_t
X _do_stat( name, lib, sym )
X char *name;
X char *lib;
X char **sym;
X {
X time_t res;
X DB_ENTER( "_do_stat" );
X
X res = Do_stat(name, lib, sym);
X DB_PRINT( "stat", ("Statted [%s,%s,%d,%ld]", name, lib, sym, res) );
X
X DB_RETURN( res );
X }
#define DO_STAT(A,B,C) _do_stat(A,B,C)
#else
#define DO_STAT(A,B,C) Do_stat(A,B,C)
#endif
X
static char *_first; /* local storage of first attempted path */
SHAR_EOF
true || echo 'restore of dmake/stat.c failed'
fi
echo 'End of part 29, continue with part 30'
echo 30 > _shar_seq_.tmp
exit 0
exit 0 # Just in case...
--
Kent Landfield INTERNET: kent@sparky.IMD.Sterling.COM
Sterling Software, IMD UUCP: uunet!sparky!kent
Phone: (402) 291-8300 FAX: (402) 291-4362
Please send comp.sources.misc-related mail to kent@uunet.uu.net.