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Add default c-layout and java-layout implementations for primitives

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This commit is contained in:
Joshua Suskalo 2021-09-16 16:28:21 -05:00
parent 75951c5019
commit 3dcbe3ff2a
1 changed files with 31 additions and 35 deletions
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66
src/coffi/ffi.clj
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@ -131,18 +131,6 @@
::float ::double
::pointer ::void})
(def c-prim-layout
"Map of primitive type names to the [[CLinker]] types for a method handle."
{::byte CLinker/C_CHAR
::short CLinker/C_SHORT
::int CLinker/C_INT
::long CLinker/C_LONG
::long-long CLinker/C_LONG_LONG
::char CLinker/C_CHAR
::float CLinker/C_FLOAT
::double CLinker/C_DOUBLE
::pointer CLinker/C_POINTER})
(defn- type-dispatch
"Gets a type dispatch value from a (potentially composite) type."
[type]
@ -150,19 +138,6 @@
(qualified-keyword? type) type
(sequential? type) (keyword (first type))))
(defmulti c-layout
"Gets the layout object for a given `type`.
If a type is primitive it will return the appropriate primitive
layout (see [[c-prim-layout]]).
Otherwise, it should return a [[GroupLayout]] for the given type."
type-dispatch)
(defmethod c-layout :default
[type]
(c-prim-layout type))
(defmulti primitive-type
"Gets the primitive type that is used to pass as an argument for the `type`.
@ -177,6 +152,31 @@
[type]
(primitive-types type))
(def c-prim-layout
"Map of primitive type names to the [[CLinker]] types for a method handle."
{::byte CLinker/C_CHAR
::short CLinker/C_SHORT
::int CLinker/C_INT
::long CLinker/C_LONG
::long-long CLinker/C_LONG_LONG
::char CLinker/C_CHAR
::float CLinker/C_FLOAT
::double CLinker/C_DOUBLE
::pointer CLinker/C_POINTER})
(defmulti c-layout
"Gets the layout object for a given `type`.
If a type is primitive it will return the appropriate primitive
layout (see [[c-prim-layout]]).
Otherwise, it should return a [[GroupLayout]] for the given type."
type-dispatch)
(defmethod c-layout :default
[type]
(c-prim-layout (or (primitive-type type) type)))
(def java-prim-layout
"Map of primitive type names to the Java types for a method handle."
{::byte Byte/TYPE
@ -191,12 +191,16 @@
::void Void/TYPE})
(defmulti java-layout
"Gets the Java class to an argument of this type for a method handle."
"Gets the Java class to an argument of this type for a method handle.
If a type serializes to a primitive it should return a Java primitive type.
Otherwise, it should return [[MemorySegment]]."
type-dispatch)
(defmethod java-layout :default
[type]
(java-prim-layout type MemorySegment))
(java-prim-layout (or (primitive-type type) type) MemorySegment))
(defn size-of
"The size in bytes of the given `type`."
@ -402,14 +406,6 @@
[_type]
::pointer)
(defmethod c-layout ::c-string
[_type]
CLinker/C_POINTER)
(defmethod java-layout ::c-string
[_type]
MemoryAddress)
(defmethod serialize* ::c-string
[obj _type scope]
(address-of (CLinker/toCString (str obj) ^ResourceScope scope)))