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- /* IdentDict.c -- implementation of Identifier Dictionary
-
- Function:
-
- An IdentDict is like a Dictionary, except keys are compared using
- isSame() rather than isEqual().
-
- */
-
- #include "identdic.h"
- #include "lookupke.h"
-
- #define THIS IdentDict
- #define BASE Dictionary
- DEFINE_CLASS(IdentDict,Dictionary);
-
- IdentDict::IdentDict(unsigned size) : Dictionary(size) {}
-
- IdentDict::IdentDict(const IdentDict& d) : Dictionary(d) {}
-
- void IdentDict::operator=(const IdentDict& d)
- {
- this->Dictionary::operator=(d);
- }
-
- int IdentDict::findIndexOf(const Object& ob) const
- /*
- Search this IdentDict for a LookupKey with the same key object as the
- argument.
-
- Enter:
- ob = pointer to LookupKey to search for
-
- Returns:
- index of object if found or of nil slot if not found
-
- Algorithm L, Knuth Vol. 3, p. 519
- */
- {
- register int i;
- Object* keyob = ((LookupKey*)&ob)->key();
- for (i = h((int)keyob); contents[i]!=nil; i = (i-1)&mask) {
- if (((LookupKey*)contents[i])->key()->isSame(*keyob)) return i;
- }
- return i;
- }
-
- Object* IdentDict::atKey(const Object& key) const
- {
- return Dictionary::atKey(LookupKey(key));
- }
-
- Object* IdentDict::atKey(const Object& key, const Object& newValue)
- {
- return Dictionary::atKey(LookupKey(key), newValue);
- }
-
- LookupKey& IdentDict::assocAt(const Object& key) const
- {
- return Dictionary::assocAt(LookupKey(key));
- }
-
- bool IdentDict::includesKey(const Object& key) const
- {
- return Dictionary::includesKey(LookupKey(key));
- }
-