nim-ffi/ffi/codegen/meta.nim

36 lines
1.2 KiB
Nim

## Compile-time metadata types for FFI binding generation.
## Populated by the {.ffiCtor.} and {.ffi.} macros and consumed by codegen.
type
FFIParamMeta* = object
name*: string # Nim param name, e.g. "req"
typeName*: string # Nim type name, e.g. "EchoRequest"
isPtr*: bool # true if the type is `ptr T`
FFIProcKind* = enum
ffiCtorKind
ffiFfiKind
FFIProcMeta* = object
procName*: string # e.g. "nimtimer_echo"
libName*: string # library name, e.g. "nimtimer"
kind*: FFIProcKind
libTypeName*: string # e.g. "NimTimer"
extraParams*: seq[FFIParamMeta] # all params except the lib param
returnTypeName*: string # e.g. "EchoResponse", "string", "pointer"
returnIsPtr*: bool # true if return type is ptr T
isAsync*: bool
FFIFieldMeta* = object
name*: string # e.g. "delayMs"
typeName*: string # e.g. "int"
FFITypeMeta* = object
name*: string
fields*: seq[FFIFieldMeta]
# Compile-time registries populated by the macros
var ffiProcRegistry* {.compileTime.}: seq[FFIProcMeta]
var ffiTypeRegistry* {.compileTime.}: seq[FFITypeMeta]
var currentLibName* {.compileTime.}: string