diff options
| -rw-r--r-- | lib/pure/collections/tableimpl.nim | 21 | ||||
| -rw-r--r-- | lib/pure/collections/tables.nim | 48 | ||||
| -rw-r--r-- | tests/stdlib/tmget.nim | 16 |
3 files changed, 81 insertions, 4 deletions
diff --git a/lib/pure/collections/tableimpl.nim b/lib/pure/collections/tableimpl.nim index 630af3970..3542741fa 100644 --- a/lib/pure/collections/tableimpl.nim +++ b/lib/pure/collections/tableimpl.nim @@ -45,7 +45,7 @@ template addImpl(enlarge) {.dirty.} = rawInsert(t, t.data, key, val, hc, j) inc(t.counter) -template maybeRehashPutImpl(enlarge) {.dirty.} = +template maybeRehashPutImpl(enlarge, val) {.dirty.} = checkIfInitialized() if mustRehash(t): enlarge(t) @@ -59,7 +59,7 @@ template putImpl(enlarge) {.dirty.} = var hc: Hash = default(Hash) var index = rawGet(t, key, hc) if index >= 0: t.data[index].val = val - else: maybeRehashPutImpl(enlarge) + else: maybeRehashPutImpl(enlarge, val) template mgetOrPutImpl(enlarge) {.dirty.} = checkIfInitialized() @@ -67,17 +67,30 @@ template mgetOrPutImpl(enlarge) {.dirty.} = var index = rawGet(t, key, hc) if index < 0: # not present: insert (flipping index) - maybeRehashPutImpl(enlarge) + when declared(val): + maybeRehashPutImpl(enlarge, val) + else: + maybeRehashPutImpl(enlarge, default(B)) # either way return modifiable val result = t.data[index].val +# template mgetOrPutDefaultImpl(enlarge) {.dirty.} = +# checkIfInitialized() +# var hc: Hash = default(Hash) +# var index = rawGet(t, key, hc) +# if index < 0: +# # not present: insert (flipping index) +# maybeRehashPutImpl(enlarge, default(B)) +# # either way return modifiable val +# result = t.data[index].val + template hasKeyOrPutImpl(enlarge) {.dirty.} = checkIfInitialized() var hc: Hash = default(Hash) var index = rawGet(t, key, hc) if index < 0: result = false - maybeRehashPutImpl(enlarge) + maybeRehashPutImpl(enlarge, val) else: result = true # delImplIdx is KnuthV3 Algo6.4R adapted to i=i+1 (from i=i-1) which has come to diff --git a/lib/pure/collections/tables.nim b/lib/pure/collections/tables.nim index 0a902ba84..8e4a3c35f 100644 --- a/lib/pure/collections/tables.nim +++ b/lib/pure/collections/tables.nim @@ -474,6 +474,18 @@ proc mgetOrPut*[A, B](t: var Table[A, B], key: A, val: B): var B = mgetOrPutImpl(enlarge) +proc mgetOrPut*[A, B](t: var Table[A, B], key: A): var B = + ## Retrieves the value at `t[key]` or puts the + ## default initialization value for type `B` (e.g. 0 for any + ## integer type). + runnableExamples: + var a = {'a': 5}.newTable + doAssert a.mgetOrPut('a') == 5 + a.mgetOrPut('z').inc + doAssert a == {'a': 5, 'z': 1}.newTable + + mgetOrPutImpl(enlarge) + proc len*[A, B](t: Table[A, B]): int = ## Returns the number of keys in `t`. runnableExamples: @@ -1013,6 +1025,18 @@ proc mgetOrPut*[A, B](t: TableRef[A, B], key: A, val: B): var B = doAssert t[25] == @[25, 35] t[].mgetOrPut(key, val) +proc mgetOrPut*[A, B](t: TableRef[A, B], key: A): var B = + ## Retrieves the value at `t[key]` or puts the + ## default initialization value for type `B` (e.g. 0 for any + ## integer type). + runnableExamples: + var a = {'a': 5}.newTable + doAssert a.mgetOrPut('a') == 5 + a.mgetOrPut('z').inc + doAssert a == {'a': 5, 'z': 1}.newTable + + t[].mgetOrPut(key) + proc len*[A, B](t: TableRef[A, B]): int = ## Returns the number of keys in `t`. runnableExamples: @@ -1503,6 +1527,18 @@ proc mgetOrPut*[A, B](t: var OrderedTable[A, B], key: A, val: B): var B = mgetOrPutImpl(enlarge) +proc mgetOrPut*[A, B](t: var OrderedTable[A, B], key: A): var B = + ## Retrieves the value at `t[key]` or puts the + ## default initialization value for type `B` (e.g. 0 for any + ## integer type). + runnableExamples: + var a = {'a': 5}.toOrderedTable + doAssert a.mgetOrPut('a') == 5 + a.mgetOrPut('z').inc + doAssert a == {'a': 5, 'z': 1}.toOrderedTable + + mgetOrPutImpl(enlarge) + proc len*[A, B](t: OrderedTable[A, B]): int {.inline.} = ## Returns the number of keys in `t`. runnableExamples: @@ -1992,6 +2028,18 @@ proc mgetOrPut*[A, B](t: OrderedTableRef[A, B], key: A, val: B): var B = result = t[].mgetOrPut(key, val) +proc mgetOrPut*[A, B](t: OrderedTableRef[A, B], key: A): var B = + ## Retrieves the value at `t[key]` or puts the + ## default initialization value for type `B` (e.g. 0 for any + ## integer type). + runnableExamples: + var a = {'a': 5}.toOrderedTable + doAssert a.mgetOrPut('a') == 5 + a.mgetOrPut('z').inc + doAssert a == {'a': 5, 'z': 1}.toOrderedTable + + t[].mgetOrPut(key) + proc len*[A, B](t: OrderedTableRef[A, B]): int {.inline.} = ## Returns the number of keys in `t`. runnableExamples: diff --git a/tests/stdlib/tmget.nim b/tests/stdlib/tmget.nim index bf5e53560..f41963f02 100644 --- a/tests/stdlib/tmget.nim +++ b/tests/stdlib/tmget.nim @@ -3,15 +3,19 @@ discard """ output: '''Can't access 6 10 11 +2 Can't access 6 10 11 +2 Can't access 6 10 11 +2 Can't access 6 10 11 +2 0 10 11 @@ -41,6 +45,9 @@ block: x[5] += 1 var c = x[5] echo c + x.mgetOrPut(7).inc + x.mgetOrPut(7).inc + echo x[7] block: var x = newTable[int, int]() @@ -53,6 +60,9 @@ block: x[5] += 1 var c = x[5] echo c + x.mgetOrPut(7).inc + x.mgetOrPut(7).inc + echo x[7] block: var x = initOrderedTable[int, int]() @@ -65,6 +75,9 @@ block: x[5] += 1 var c = x[5] echo c + x.mgetOrPut(7).inc + x.mgetOrPut(7).inc + echo x[7] block: var x = newOrderedTable[int, int]() @@ -77,6 +90,9 @@ block: x[5] += 1 var c = x[5] echo c + x.mgetOrPut(7).inc + x.mgetOrPut(7).inc + echo x[7] block: var x = initCountTable[int]() |