X-Git-Url: https://www.kengrimes.com/gitweb/?p=henge%2Fapc.git;a=blobdiff_plain;f=src%2Fir.c;h=4ef2e5a9fa328be6fd935f8624dfc922a36239a3;hp=d6ad16f26b66eb02bcf1dacda2886c2b2bba286b;hb=32084db924eb07c8a5e44748aaf12883189b37d2;hpb=21f57201034a7b54ebb42703f2a8bef4b561acb4

diff --git a/src/ir.c b/src/ir.c
index d6ad16f..4ef2e5a 100644
--- a/src/ir.c
+++ b/src/ir.c
@@ -631,6 +631,83 @@ uint32_t ir_linkdata_ref
   return linkdata->link.setld->ref;
 }
 
+/* Resolve and return the link's target set
+   Fails on error, cannot return NULL
+*/
+struct ir_set_t* ir_linkdata_set
+( union ir_setdata_t* linkdata )
+{ struct ir_class_t* class_iter;
+  struct ir_namelist_t* namelist_iter,* namelist_iter_last;
+  struct ir_setld_t* setld;
+  struct ir_classld_t* classld;
+  struct ir_set_t* set;
+  set = NULL;
+  class_iter = NULL;
+  if (linkdata->header.type != LDAT)
+    eprintf("Data %s is not a link\n", linkdata->header.data_name);
+  setld = linkdata->link.setld;
+  if (linkdata->link.setld == NULL)
+    eprintf("Link data is invalid\n");
+  classld = linkdata->link.classld;
+  if (classld != NULL)
+    { namelist_iter = classld->namelist;
+      if (classld->root_class == NULL)
+	eprintf("No root class for classld\n");
+      class_iter = classld->root_class->nextchild;
+      namelist_iter_last = NULL;
+      while (class_iter != NULL)
+	{ if (classnames_identical(class_iter->name, namelist_iter->name))
+	    { if (namelist_iter == classld->namelist_head)
+		break;
+	      class_iter = class_iter->nextchild;
+	      namelist_iter_last = namelist_iter;
+	      namelist_iter = namelist_iter->nextsib;
+	    }
+	  else
+	    class_iter = class_iter->nextsib;
+	}
+      if (class_iter == NULL)
+	{ if (namelist_iter_last)
+	    eprintf("No such subclass \"%s\" of class \"%s\"\n",
+		    namelist_iter->name,
+		    namelist_iter_last->name);
+	  else
+	    eprintf("No such class \"%s\"\n", namelist_iter->name);
+	}
+      set = class_iter->root_set;
+    }
+  else
+    set = ir_set_from_ref(setld->ref);
+  if (set == NULL)
+    eprintf("Initial set resolution failed\n");
+  namelist_iter = setld->namelist;
+  namelist_iter_last = NULL;
+  if (setld->namelist != NULL)
+    { while (set != NULL)
+	{ if (bytes_identical(set->name, namelist_iter->name))
+	    { if (namelist_iter == setld->namelist_head)
+		break;
+	      set = set->nextchild;
+	      namelist_iter_last = namelist_iter;
+	      namelist_iter = namelist_iter->nextsib;
+	    }
+	  else
+	    set = set->nextsib;
+	}
+      if (set == NULL)
+	{ if (namelist_iter_last)
+	    eprintf("No such subset \"%s\" of set \"%s\"\n",
+		    namelist_iter->name,
+		    namelist_iter_last->name);
+	  else
+	    eprintf("No such set \"%s\" in class \"%s\"\n",
+		    namelist_iter->name,
+		    class_iter->name);
+	}
+    }
+  return set;
+}
+
 /* Get a setdata's next sibling */
 union ir_setdata_t* ir_setdata_nextsib
 ( union ir_setdata_t* setdata )