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/*
*
*
*/
#include "defs.h"
Prototype VNode *MakeVNode(List *list, const char *vname);
Prototype void CommitVNode(VNode *vn);
Prototype int VNodeStrSize(VNode *vn);
Prototype DNode *MakeDNode(const char *vname);
Prototype Depend *MakeDepend(const char *dname, Node *rhsn, List *rhsl, List *xlist);
Prototype List *FindVar(char c, Depend *dep, const char *vname);
VNode *
MakeVNode(List *list, const char *vname)
{
VNode *vn = (VNode *)MakeNode(vname, sizeof(VNode), 0);
vn->vn_Node.no_Type = TYPE_VARTMP;
InitList(&vn->vn_List);
AddTail(list, &vn->vn_Node);
return(vn);
}
void
CommitVNode(VNode *vn)
{
vn->vn_Node.no_Type = TYPE_VAR;
}
int
VNodeStrSize(VNode *vn)
{
Node *node;
int l = 1;
for (node = GetHead(&vn->vn_List); node; node = GetNext(node)) {
l += strlen(node->no_Name) + 1;
}
return(l);
}
DNode *
MakeDNode(const char *dname)
{
DNode *dn;
char buf[256];
const char *ptr = dname;
if (*dname == '\"') {
int l = strlen(dname + 1) - 1;
char *p = buf;
if (l + 1 >= sizeof(buf)) {
p = malloc(l + 1);
}
strncpy(p, dname + 1, l);
p[l] = 0;
ptr = p;
}
dn = (DNode *)MakeNode(ptr, sizeof(DNode), 0);
dn->dn_Depend = MakeDepend(ptr, NULL, NULL, NULL);
if (ptr != dname && ptr != buf)
free((char *)ptr);
return(dn);
}
Depend *
MakeDepend(const char *dname, Node *rhsn, List *rhsl, List *xlist)
{
Depend *dbase;
Depend *dep;
/*
* See if dependancy exists, create it if it does not
*/
for (dbase = GetHead(&DependList); dbase; dbase = GetNext(&dbase->de_Node)) {
if (strcmp(dname, dbase->de_Node.no_Name) == 0)
break;
}
if (dbase == NULL || dbase->de_Rhs != NULL || dbase->de_XList != NULL) {
Node *no;
dep = MakeNode(dname, sizeof(Depend), 0);
dep->de_Node.no_Value = DEPEND_NOTRUN;
if (dbase == NULL) { /* XXX */
AddTail(&DependList, &dep->de_Node);
dbase = dep;
} else {
Depend *dn = dbase;
while (dn->de_Chain)
dn = dn->de_Chain;
dn->de_Chain = dep;
}
InitList(&dep->de_Lhs);
/*
* dummy node used for %(left) extraction
*/
no = MakeNode(dname, sizeof(Node), 0);
AddTail(&dep->de_Lhs, no);
} else {
dep = dbase;
}
/*
* Apply rhsn - right hand side DNode
*/
if (rhsn) {
dep->de_Rhs = malloc(sizeof(List));
InitList(dep->de_Rhs);
AddTail(dep->de_Rhs, rhsn);
}
/*
* Apply rhsl - right hand side list of DNode's
*/
if (rhsl) {
if (dep->de_Rhs == NULL) {
dep->de_Rhs = rhsl;
} else {
Node *node;
for (node = GetHead(rhsl); node; node = GetNext(node)) {
Node *n2 = CopyNode(node);
AddTail(dep->de_Rhs, n2);
}
}
}
/*
* Apply xlist
*/
dep->de_XList = xlist;
return(dbase);
}
List *
FindVar(char c, Depend *dep, const char *vname)
{
List *list = NULL;
if (c == '$') {
VNode *vn;
for (vn = GetTail(&VarList); vn; vn = GetPrev(&vn->vn_Node)) {
if (vn->vn_Node.no_Type == TYPE_VAR &&
strcmp(vn->vn_Node.no_Name, vname) == 0
) {
list = &vn->vn_List;
break;
}
}
} else if (c == '%') {
if (dep == NULL) {
fatal(NULL, "variable outside of execution list:: %%%s\n", vname);
} else {
if (strcmp(vname, "left") == 0) {
list = &dep->de_Lhs;
} else if (strcmp(vname, "right") == 0) {
list = dep->de_Rhs;
} else {
fatal(NULL, "Illegal special name '%s'\n", vname);
}
}
} else {
fatal(NULL, "Illegal variable special '%c'\n", c);
}
return(list);
}
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