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typed_buffer.clj
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typed_buffer.clj
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(ns tech.v2.datatype.typed-buffer
(:require [tech.v2.datatype.protocols :as dtype-proto]
[tech.v2.datatype.casting :as casting]
[tech.v2.datatype.io :as dtype-io]
[tech.v2.datatype.base :as base]
[tech.jna :as jna]
[tech.v2.datatype.reader :as reader]
[tech.v2.datatype.writer :as writer]
[tech.v2.datatype.mutable :as mutable]
[tech.v2.datatype.typecast :as typecast]
[tech.v2.datatype.pprint :as dtype-pprint]
[tech.jna :as jna])
(:import [com.sun.jna Pointer]
[java.io Writer]
[tech.v2.datatype.protocols PDatatype]))
(set! *warn-on-reflection* true)
(set! *unchecked-math* :warn-on-boxed)
(deftype TypedBuffer [datatype backing-store]
dtype-proto/PDatatype
(get-datatype [item] datatype)
dtype-proto/PCopyRawData
(copy-raw->item! [raw-data ary-target target-offset options]
(base/raw-dtype-copy! raw-data ary-target target-offset options))
dtype-proto/PPrototype
(from-prototype [item datatype shape]
(TypedBuffer. datatype
(dtype-proto/from-prototype backing-store
(casting/datatype->host-type datatype)
shape)))
dtype-proto/PToBackingStore
(->backing-store-seq [item]
(dtype-proto/->backing-store-seq backing-store))
dtype-proto/PToNioBuffer
(convertible-to-nio-buffer? [item]
(dtype-proto/nio-convertible? backing-store))
(->buffer-backing-store [item]
(dtype-proto/as-nio-buffer backing-store))
dtype-proto/PToList
(convertible-to-fastutil-list? [item]
(dtype-proto/list-convertible? backing-store))
(->list-backing-store [item]
(when (satisfies? dtype-proto/PToList backing-store)
(dtype-proto/->list-backing-store backing-store)))
dtype-proto/PSetConstant
(set-constant! [item offset value n-elems]
(let [value (-> value
(casting/cast datatype)
(casting/unchecked-cast (dtype-proto/get-datatype
backing-store)))]
(dtype-proto/set-constant! backing-store offset value n-elems)))
dtype-proto/PBuffer
(sub-buffer [buffer offset length]
(TypedBuffer. datatype (dtype-proto/sub-buffer backing-store offset length)))
dtype-proto/PToArray
(->sub-array [item]
(when (= datatype (dtype-proto/get-datatype backing-store))
(dtype-proto/->sub-array backing-store)))
(->array-copy [item]
(if (= datatype (dtype-proto/get-datatype backing-store))
(dtype-proto/->array-copy backing-store)
(let [data-buf (dtype-proto/make-container
:java-array (casting/datatype->safe-host-type datatype)
(base/ecount backing-store)
{})]
(base/copy! item 0 data-buf 0 (base/ecount item)))))
dtype-proto/PToWriter
(convertible-to-writer? [item] (dtype-proto/convertible-to-writer? backing-store))
;;No marshalling/casting on the writer side.
(->writer [item options]
(let [{writer-datatype :datatype
unchecked? :unchecked?} options
writer-datatype (or writer-datatype datatype)
writer-matches? (= writer-datatype datatype)
src-writer-unchecked? (if writer-matches?
unchecked?
false)
direct-writer (cond
(dtype-proto/as-nio-buffer backing-store)
(writer/make-buffer-writer item
(casting/safe-flatten datatype)
datatype
src-writer-unchecked?)
(dtype-proto/as-list backing-store)
(writer/make-list-writer item
(casting/safe-flatten datatype)
datatype
src-writer-unchecked?)
:else
(dtype-proto/->writer backing-store {:datatype datatype}))]
(cond-> direct-writer
(not writer-matches?)
(dtype-proto/->writer {:datatype writer-datatype :unchecked? unchecked?}))))
dtype-proto/PToReader
(convertible-to-reader? [item] (dtype-proto/convertible-to-reader? backing-store))
(->reader [item options]
(let [{reader-datatype :datatype
unchecked? :unchecked?} options
reader-datatype (or reader-datatype datatype)
src-unchecked? true
direct-reader (cond
(dtype-proto/as-nio-buffer backing-store)
(reader/make-buffer-reader item
(casting/safe-flatten datatype)
datatype
src-unchecked?)
(dtype-proto/as-list backing-store)
(reader/make-list-reader item
(casting/safe-flatten datatype)
datatype
src-unchecked?)
:else
(dtype-proto/->reader backing-store
{:datatype datatype
:unchecked? unchecked?}))]
(cond-> direct-reader
(not= reader-datatype datatype)
(dtype-proto/->reader {:datatype reader-datatype
:unchecked? unchecked?}))))
dtype-proto/PToIterable
(convertible-to-iterable? [item] true)
(->iterable [item options] (dtype-proto/->reader item options))
dtype-proto/PToMutable
(convertible-to-mutable? [item]
(dtype-proto/convertible-to-mutable? backing-store))
(->mutable [item options]
(let [{mutable-datatype :datatype
unchecked? :unchecked?} options
mutable-datatype (or mutable-datatype datatype)
src-unchecked? (if (= mutable-datatype datatype)
unchecked?
false)
direct-mutable (cond
(dtype-proto/convertible-to-fastutil-list? backing-store)
(mutable/make-list-mutable item
(casting/safe-flatten datatype)
datatype
src-unchecked?)
:else
(dtype-proto/->mutable backing-store
{:datatype datatype
:unchecked? src-unchecked?}))]
(cond-> direct-mutable
(not= mutable-datatype datatype)
(dtype-proto/->mutable {:datatype mutable-datatype
:unchecked? unchecked?}))))
dtype-proto/PRemoveRange
(remove-range! [item idx count]
(dtype-proto/remove-range! backing-store idx count))
dtype-proto/PInsertBlock
(insert-block! [item idx values options]
(dtype-proto/insert-block! backing-store
idx
(if (:unchecked? options)
values
(dtype-proto/->reader values {:datatype datatype}))
options))
jna/PToPtr
(is-jna-ptr-convertible? [item]
(jna/ptr-convertible? backing-store))
(->ptr-backing-store [item]
(jna/as-ptr backing-store))
dtype-proto/PToBufferDesc
(convertible-to-buffer-desc? [item]
(when (= (casting/numeric-byte-width datatype)
(casting/numeric-byte-width (dtype-proto/get-datatype
backing-store)))
(dtype-proto/convertible-to-buffer-desc? backing-store)))
(->buffer-descriptor [item]
(when (= (casting/numeric-byte-width datatype)
(casting/numeric-byte-width (dtype-proto/get-datatype
backing-store)))
(-> (dtype-proto/->buffer-descriptor backing-store)
(assoc :datatype datatype))))
dtype-proto/PCountable
(ecount [item] (dtype-proto/ecount backing-store))
Object
(toString [this]
(let [n-items (base/ecount this)
format-str (if (> n-items 20)
"#tech.v2.datatype.typed-buffer<%s,%s>%s\n[%s...]"
"#tech.v2.datatype.typed-buffer<%s,%s>%s\n[%s]"
)]
(format format-str
(.getName ^Class (type backing-store))
(name datatype)
[n-items]
(-> (dtype-proto/sub-buffer this 0 (min 20 (base/ecount this)))
(dtype-pprint/print-reader-data)))))
(hashCode [this]
(.hashCode {:datatype datatype
:backing-store backing-store}))
(equals [this other]
(.equals other {:datatype datatype
:backing-store backing-store})))
(defmethod print-method TypedBuffer
[buf w]
(.write ^Writer w (.toString ^Object buf)))
(defn typed-buffer?
[item]
(every? #(satisfies? % item)
[dtype-proto/PDatatype
dtype-proto/PCopyRawData
dtype-proto/PPrototype
dtype-proto/PBuffer
dtype-proto/PToWriter dtype-proto/PToReader]))
(defn convertible-to-typed-buffer?
[item]
(or (instance? TypedBuffer item)
(or
(dtype-proto/base-type-convertible? item))))
(defn convert-to-typed-buffer
[item]
(cond
(instance? TypedBuffer item)
item
(dtype-proto/base-type-convertible? item)
(TypedBuffer. (dtype-proto/get-datatype item)
(or (dtype-proto/as-list item)
(dtype-proto/as-nio-buffer item)))
:else
(throw (ex-info "Item is not convertible to typed buffer"
{:item-type (type item)}))))
(defn ->typed-buffer
[item]
(cond
(typed-buffer? item)
item
:else
(convert-to-typed-buffer item)))
(defn make-typed-buffer
([datatype elem-count-or-seq options]
(let [host-dtype (casting/datatype->host-datatype datatype)]
(if (or (:unchecked? options)
(= host-dtype datatype))
(TypedBuffer. datatype
(dtype-proto/make-container
:java-array host-dtype elem-count-or-seq options))
(let [n-elems (if (number? elem-count-or-seq)
elem-count-or-seq
(base/ecount elem-count-or-seq))
container (dtype-proto/make-container :java-array host-dtype
n-elems {})
typed-buf (TypedBuffer. datatype container)]
(when-not (number? elem-count-or-seq)
(dtype-proto/copy-raw->item! elem-count-or-seq
typed-buf 0 options))
typed-buf))))
([datatype elem-count-or-seq]
(make-typed-buffer datatype elem-count-or-seq {})))
(defn set-datatype
"Use this one with care."
[item dtype]
(if (= dtype (dtype-proto/get-datatype item))
item
(let [^TypedBuffer item (convert-to-typed-buffer item)]
(TypedBuffer. dtype (.backing-store item)))))
(defmethod dtype-proto/make-container :typed-buffer
[container-type datatype elem-count-or-seq options]
(make-typed-buffer datatype elem-count-or-seq options))