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smartgi.nim
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smartgi.nim
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import os
import gobjectintrospection
import streams
import future
import algorithm
import sequtils
import strutils
import tables
import toposort
import safenav
var output = newStringStream()
var gCurrentNs = ""
var prototypesWritten = newSeq[string]()
proc write*(f: Stream, a: varargs[string, `$`]) =
for s in items(a):
write(f, s)
proc writeln*(f: Stream, a: varargs[string, `$`]) =
for s in items(a):
write(f, s)
write(f, "\n")
proc escapeName(name: string, for_public=false): string =
const nimKeywords = [
"addr",
"and",
"atomic",
"bind",
"block",
"const",
"continue",
"converter",
"end",
"enum",
"export",
"func",
"import",
"in",
"include",
"interface",
"method",
"object",
"or",
"out",
"raise",
"ref",
"result",
"static",
"tuple",
"type",
"xor",
"yield",
]
if name in nimKeywords:
if for_public:
result = "`" & name & "`"
return
else:
result = name & "_x"
else:
result = name
if result[0] in Digits:
result = "x"&result
while result.startswith("_"):
result = result[1..result.len-1]
# result = "x"&result
if result.endswith("_"):
result = result&"x"
result = result.replace("__", "_")
if result == "":
# hope there is only one empty name in this context
result = "x"
proc toCamelCase(input: string): string =
var
output = input
i = 0
j = 0
while i < input.len:
let c = input[i]
# echo i, " ", c
inc i
if c == '_':
if i < input.len:
output[j] = input[i].toUpperAscii
inc i
inc j
continue
output[j] = c
inc j
result = output.substr(0, j-1)
# echo input, " -> ", result
proc getVersionedNamespace(info: GIBaseInfo): string =
# there can only be one version loaded at a time
assert info != nil
assert info.pointer != nil
# echo cast[int64](info.pointer)
let
ns = info.getNamespace
version = g_irepository_get_version(nil, ns);
if version.len == 0:
return ns
else:
# return ns & "_" & $version
return ns & version[0]
proc getQualifiedNimStructName(info: GIBaseInfo, wrapped=false): string =
assert info.pointer != nil
assert(case info.getType
of GIInfoType.OBJECT, GIInfoType.STRUCT, GIInfoType.UNION, GIInfoType.Interface: true
else: false, "type is " & $info.getType)
let ns = info.getVersionedNamespace
var name = escapeName(info.getName)
# if not wrapped or info.getType == GIInfoType.STRUCT:
if not wrapped:
name = "T" & name
if ns != gCurrentNs:
# name = "gir." & ns & "." & name
name = ns & "." & name
return name
proc getNimTypeName(tag: GITypeTag, wrapped=false): string =
case tag:
of GITypeTag.UTF8: (if wrapped: "ustring" else: "ucstring")
of GITypeTag.BOOLEAN: "bool"
of GITypeTag.INT8..GITypeTag.UINT64: ($tag).toLowerAscii
of GITypeTag.FLOAT: "float32"
of GITypeTag.DOUBLE: "float64"
of GITypeTag.FILENAME: (if wrapped: "string" else: "cstring")
# GType = unsigned long
of GITypeTag.GTYPE: "GType"
of GITypeTag.UNICHAR: "unichar"
of GITypeTag.GSLIST: "TGSList"
else: $tag & "_TODO"
# proc getNimTypeName(info: GITypeInfo, wrapped=false): string =
# # handle complex types here, pass simple types
# # to proc above.
# case info.getTag:
# of GITypeTag.Interface:
# let
# iface = info.getInterface
# ns = iface.getNamespace
# case iface.getType
# of GIInfoType.OBJECT, GIInfoType.STRUCT, GIInfoType.UNION:
# let
# ns = iface.getNamespace()
# name = iface.getName()
# if ns == "GLib" and name == "String" and wrapped:
# #return "BLAHFASEL"
# return "ustring"
# # let pointerInfo = if info.isPointer(): "(POINTER) " else: "(no pointer!!!!!!!!) "
# if wrapped:
# return getQualifiedNimStructName(iface, wrapped=true)
# else:
# return "ptr " & getQualifiedNimStructName(iface, wrapped=false)
# # if ns == gCurrentNs:
# # return "ptr T" & iface.getName
# # else:
# # return "ptr " & ns & ".T" & iface.getName
# of GIInfoType.Flags:
# if wrapped:
# if ns == gCurrentNs:
# return iface.getName
# else:
# return ns & "." & iface.getName
# else:
# if ns == gCurrentNs:
# return "S" & iface.getName
# else:
# return ns & "." & "S" & iface.getName
# of GIInfoType.Enum:
# if ns == gCurrentNs:
# return iface.getName
# else:
# return ns & "." & iface.getName
# # if ns == gCurrentNs:
# # return iface.getName
# # else:
# # return ns & "." & iface.getName
# of GIInfoType.Interface:
# # TODO: specific handling of interfaces (vs. objects) needed?
# if wrapped:
# return getQualifiedNimStructName(iface, wrapped=true)
# else:
# return "ptr " & getQualifiedNimStructName(iface)
# of GIInfoType.Callback:
# #TODO fix
# return "pointer"
# else:
# #output.writeln iface.getName & " " & $iface.getType & " ??????"
# #assert false
# return iface.getName & " " & $iface.getType & " ??????"
# #echo " ", ns, "::", iface.getName, " ", iface.getType
# of GITypeTag.Array:
# # todo: handle different kinds of arrays
# #return "openarray[", info.getName, "]"
# let itemType: GITypeInfo = info.getParamType(0)
# #return getNimTypeName(info.getTag) & "xxx" & itemType.getNimTypeName
# return "openarray[" & itemType.getNimTypeName(wrapped) & "]"
# else:
# if info.isPointer:
# if info.getTag == GITypeTag.VOID:
# return "pointer"
# # isPointer seems to be set often when it should not be
# # e.g. for most function arguments
# return "ptr " & getNimTypeName(info.getTag)
# # return "PTR " & $info.getTag & " " & getNimTypeName(info.getTag, wrapped)
# return getNimTypeName(info.getTag, wrapped)
# #info.getTag.toString & "x"
# proc getNimTypeName(argInfo: GIArgInfo, wrapped=false): string =
# let typeInfo = argInfo.getType
# return "A " & getNimTypeName(typeInfo, wrapped)
## ==================================
proc id(expression: string): string = expression
# proc wrapToUstringFromGlibString(expression: string): string =
# return "ustring($(" & expression & ".str))"
type
Wrapper = proc (expression:string):string {.closure.}
# todo: we could add a "typesAreIdentical" field if
# the wrapped is just an alias of the unwrapped
NimTypeInfo = tuple[wrappedTypeName: string, unwrappedTypeName: string, wrapTo: Wrapper, unwrapFrom: Wrapper, tempInit: proc(tempName, argName: string): string, tempCopyOut: bool]
proc makeTypeInfo(wrappedTypeName: string, unwrappedTypeName: string, wrapTo=Wrapper(id), unwrapFrom=Wrapper(id), tempInit: proc(tempName, argName: string): string=nil, tempCopyOut: bool=false): NimTypeInfo =
(wrappedTypeName: wrappedTypeName,
unwrappedTypeName: unwrappedTypeName,
wrapTo: wrapTo,
unwrapFrom: unwrapFrom,
tempInit: tempInit,
tempCopyOut: tempCopyOut)
proc identifyTypeForObject(iface: GIBaseInfo, argInfo: GIArgInfo=nil, callableInfo: GICallableInfo=nil): NimTypeInfo =
assert iface.getType == GIInfoType.OBJECT
# let
# ns = iface.getVersionedNamespace
# name = iface.getName()
result = makeTypeInfo(
wrappedTypeName = getQualifiedNimStructName(iface, wrapped=true),
unwrappedTypeName = "ptr " & getQualifiedNimStructName(iface, wrapped=false))
if argInfo != nil:
# there is automatic unwrapping, but in case the signature of the import and sugar
# procs are too similar, we want to explicitly select the import one, and not recurse
# proc gdk_cairo_create(window: ptr TWindow): ptr cairo.TContext {.cdecl, dynlib: lib, importc: "gdk_cairo_create".}
# proc gdk_cairo_create*(window: Window): var cairo.TContext {.inline.} =
# gdk_cairo_create(window.unwrap)
# result.unwrapFrom = (x:string)=>"unwrap("&x&")"
# TODO: we could insert an "assert x != nil" or deal otherwise with nil
# result.unwrapFrom = (x:string) => x & ".pointer"
result.unwrapFrom = (x:string) => x & ".getPointer"
case argInfo.getDirection
of Direction.`in`:
discard
else:
result.wrappedTypeName = "var " & result.wrappedTypeName
# result.tempInit = ((tempName: string, argName: string) => ("var " & tempName & " = g_string_new(" & argName & ")"))
# result.tempInit = ((tempName: string, argName: string) => ("# blah"))
# # we could make "unwrap" a template instead so we could assign to it (?)
# result.wrapTo = Wrapper((x:string) => x & ".pointer")
elif callableInfo != nil:
# as a return type
var structName = getQualifiedNimStructName(iface, wrapped=false)
if callableInfo.getType == GIInfoType.Function:
let funcInfo = toGIFunctionInfo(callableInfo)
if FunctionInfoFlags.isConstructor in funcInfo.getFlags:
# this is a constructor, upgrade the return type
# e.g. for windowNew: Widget -> Window
let realType = funcInfo.getContainer
structName = getQualifiedNimStructName(realType, wrapped=false)
result.wrappedTypeName = getQualifiedNimStructName(realType, wrapped=true)
case callableInfo.getCallerOwns
of Transfer.Everything:
# no "ptr" in front, but use the distinct pointer type TransferFull instead
result.unwrappedTypeName = "TransferFull[" & structName & "]"
result.wrapTo = Wrapper((x:string) => "wrap(" & x & ")")
of Transfer.Nothing:
result.unwrappedTypeName = "TransferNone[" & structName & "]"
result.wrapTo = Wrapper((x:string) => "wrap(" & x & ")")
of Transfer.Container:
# TODO:
assert false
return result
proc identifyTypeForStructOrUnion(iface: GIBaseInfo, isArg: bool=false, argDirection: Direction=Direction.`in`, info: GITypeInfo=nil): NimTypeInfo =
assert (case iface.getType
of GIInfoType.STRUCT, GIInfoType.UNION, GIInfoType.Interface: true
else: false)
# proc identifyTypeForStructOrUnion(iface: GIInterfaceInfo, isArg: bool=false, argDirection: Direction=Direction.`in`, info: GITypeInfo=nil): NimTypeInfo =
# proc identifyTypeForStructOrUnion(iface: GIInterfaceInfo, argInfo: GIArgInfo=nil, info: GITypeInfo=nil): NimTypeInfo =
# let
# plainNs = iface.getNamespace
# ns = iface.getVersionedNamespace
# name = iface.getName()
# if plainNs == "GLib" and name == "String":
# result = makeTypeInfo(
# wrappedTypeName = "ustring",
# unwrappedTypeName = "ptr " & getQualifiedNimStructName(iface, wrapped=false),
# wrapTo=Wrapper(wrapToUstringFromGlibString),
# unwrapFrom=Wrapper((x:string) => "TODO("&x&")"))
# if (argInfo != nil):
# case argInfo.getDirection
# of Direction.`in`:
# result.tempInit = ((tempName: string, argName: string) => ("var " & tempName & " = g_string_new(" & argName & ")"))
# result.tempCopyOut = false
# of Direction.`out`:
# result.wrappedTypeName = "var " & result.wrappedTypeName
# result.tempInit = ((tempName: string, argName: string) => ("var " & tempName & " = g_string_new(\"\")"))
# result.tempCopyOut = true
# of Direction.`inout`:
# result.wrappedTypeName = "var " & result.wrappedTypeName
# result.tempInit = ((tempName: string, argName: string) => ("var " & tempName & " = g_string_new(" & argName & ")"))
# result.tempCopyOut = true
# return result
var
# we want for the "wrappedTypeName", i.e. the nim interface type,
# either "TBlah" or "var TBlah", this is why we say wrapped=false:
# ...
# hmm that doesn't seem to work. we can't initialize a var TBlah
# from a ptr TBlah without copying the TBlah object (since the var TBlah
# lives on the stack in C code)
# wrappedTypeName = getQualifiedNimStructName(iface, wrapped=false)
# unwrappedTypeName = getQualifiedNimStructName(iface, wrapped=false)
# wrapTo = Wrapper(id)
# unwrapFrom = Wrapper(id)
wrappedTypeName = getQualifiedNimStructName(iface, wrapped=false)
# wrappedTypeName = getQualifiedNimStructName(iface, wrapped=true)
unwrappedTypeName = getQualifiedNimStructName(iface, wrapped=false)
wrapTo = Wrapper(id)
unwrapFrom = Wrapper(id)
# # if info.isPointer or (argInfo != nil and argInfo.getDirection != Direction.`in`):
# # if info.isPointer and argInfo != nil:
# if isArg:
# case argDirection
# of Direction.`in`:
# # wrappedTypeName = wrappedTypeName
# unwrappedTypeName = "ptr " & unwrappedTypeName
# wrapTo = (x:string) => "("&x&")[]"
# unwrapFrom = (x:string) => "myUnsafeAddr("&x&")"
# of Direction.`inout`:
# wrappedTypeName = "var " & wrappedTypeName
# unwrappedTypeName = "ptr " & unwrappedTypeName
# wrapTo = (x:string) => "("&x&")[]"
# unwrapFrom = (x:string) => "addr("&x&")"
# of Direction.`out`:
# wrappedTypeName = "var " & wrappedTypeName
# unwrappedTypeName = "ptr " & unwrappedTypeName
# wrapTo = (x:string) => "("&x&")[]"
# unwrapFrom = (x:string) => "addr("&x&")"
# elif info != nil:
# # what is going on here?
# if info.isPointer:
# # wrappedTypeName = wrappedTypeName
# unwrappedTypeName = "ptr " & unwrappedTypeName
# wrapTo = (x:string) => "("&x&")[]"
# unwrapFrom = (x:string) => "myUnsafeAddr("&x&")"
# # to do: handle return type case?
# # else:
# if info.isPointer or (argInfo != nil and argInfo.getDirection != Direction.`in`):
# if info.isPointer and argInfo != nil:
if isArg:
case argDirection
of Direction.`in`:
# wrappedTypeName = wrappedTypeName
wrappedTypeName = "ptr " & wrappedTypeName
unwrappedTypeName = "ptr " & unwrappedTypeName
# wrapTo = (x:string) => "("&x&")[]"
# unwrapFrom = (x:string) => "myUnsafeAddr("&x&")"
of Direction.`inout`:
wrappedTypeName = "ptr " & wrappedTypeName
unwrappedTypeName = "ptr " & unwrappedTypeName
# wrapTo = (x:string) => "("&x&")[]"
# unwrapFrom = (x:string) => "addr("&x&")"
of Direction.`out`:
wrappedTypeName = "ptr " & wrappedTypeName
unwrappedTypeName = "ptr " & unwrappedTypeName
# wrapTo = (x:string) => "("&x&")[]"
# unwrapFrom = (x:string) => "addr("&x&")"
elif info != nil:
# what is going on here?
# this branch seems to be used on return types
if info.isPointer:
# wrappedTypeName = wrappedTypeName
wrappedTypeName = "ptr " & wrappedTypeName
unwrappedTypeName = "ptr " & unwrappedTypeName
# wrapTo = (x:string) => "("&x&")[]"
# unwrapFrom = (x:string) => "myUnsafeAddr("&x&")"
# to do: handle return type case?
# else:
# unwrappedTypeName = "XXX " & unwrappedTypeName
return makeTypeInfo (wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName,
wrapTo=wrapTo, unwrapFrom=unwrapFrom
)
proc identifyType(info: GITypeInfo, argInfo: GIArgInfo=nil, callableInfo: GICallableInfo=nil): NimTypeInfo =
# handle complex types here, pass simple types
# to proc above.
case info.getTag:
of GITypeTag.Interface: #====================================================
let
iface = info.getInterface
ns = iface.getVersionedNamespace
case iface.getType
of GIInfoType.OBJECT: #----------------------------------------------------
return identifyTypeForObject(iface, argInfo, callableInfo)
of GIInfoType.STRUCT, GIInfoType.UNION: #----------------------------------
let
isArg = argInfo != nil
argDirection = if isArg: argInfo.getDirection() else: Direction.`in`
return identifyTypeForStructOrUnion(iface, isArg, argDirection, info)
of GIInfoType.Flags: #-----------------------------------------------------
let
unwrappedTypeName = if ns == gCurrentNs:
"S" & iface.getName
else:
# "gir." & ns & "." & "S" & iface.getName
ns & "." & "S" & iface.getName
wrappedTypeName = unwrappedTypeName
# wrapTo = Wrapper(id)
# unwrapFrom = Wrapper(id)
# wrapTo = Wrapper((x:string) => "to"&wrappedTypeName&"("&x&")")
# unwrapFrom = Wrapper((x:string) => "to"&unwrappedTypeName&"("&x&")")
# TODO: this doesnt work, we get the "set is to large" error
# let
# wrappedTypeName = if ns == gCurrentNs:
# "set["&iface.getName&"]"
# else:
# "set["&ns & "." & iface.getName&"]"
# unwrappedTypeName = if ns == gCurrentNs:
# "S" & iface.getName
# else:
# ns & "." & "S" & iface.getName
# wrapTo = Wrapper((x:string) => "to"&wrappedTypeName&"("&x&")")
# unwrapFrom = Wrapper((x:string) => "to"&unwrappedTypeName&"("&x&")")
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName)
of GIInfoType.Enum: #------------------------------------------------------
let
wrappedTypeName = if ns == gCurrentNs:
iface.getName
else:
# "gir." & ns & "." & iface.getName
ns & "." & iface.getName
unwrappedTypeName = wrappedTypeName
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName)
of GIInfoType.Interface: #-------------------------------------------------
# TODO: specific handling of interfaces (vs. objects) needed?
var
wrappedTypeName = "ptr " & getQualifiedNimStructName(iface, wrapped=false)
# wrappedTypeName = getQualifiedNimStructName(iface, wrapped=true)
unwrappedTypeName = "ptr " & getQualifiedNimStructName(iface, wrapped=false)
wrapTo = Wrapper(id)
unwrapFrom = Wrapper(id)
# TODO: do we want to wrap interface pointers??
if callableInfo != nil:
# returning this
case callableInfo.getCallerOwns
of Transfer.Everything:
# no "ptr" in front, but use the distinct pointer type TransferFull instead
# TODO: need special TransferInterface?
# do some interfaces inherit from GObject?
# do we need to refcount interface pointers?
# unwrappedTypeName = "TransferFull[" & getQualifiedNimStructName(iface, wrapped=false) & "]"
# wrapTo = Wrapper((x:string) => "wrap(" & x & ")")
discard
of Transfer.Nothing:
unwrappedTypeName = "TransferNone[" & getQualifiedNimStructName(iface, wrapped=false) & "]"
wrapTo = Wrapper((x:string) => "wrap(" & x & ")")
of Transfer.Container:
# TODO:
discard
# elif argInfo != nil:
# case argInfo.getDirection
# of Direction.`in`:
# wrappedTypeName = wrappedTypeName
# unwrappedTypeName = unwrappedTypeName
# else:
# wrappedTypeName = "var " & wrappedTypeName
# unwrappedTypeName = unwrappedTypeName
# # there is automatic unwrapping, but in case the signature of the import and sugar
# # procs are too similar, we want to explicitly select the import one, and not recurse
# # proc gdk_cairo_create(window: ptr TWindow): ptr cairo.TContext {.cdecl, dynlib: lib, importc: "gdk_cairo_create".}
# # proc gdk_cairo_create*(window: Window): var cairo.TContext {.inline.} =
# # gdk_cairo_create(window.unwrap)
# # unwrapFrom = (x: string) => x & ".pointer"
# # unwrapFrom = (x:string)=>"unwrap("&x&")"
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName,
wrapTo=wrapTo, unwrapFrom=unwrapFrom)
of GIInfoType.Callback: #--------------------------------------------------
#TODO fix
let wrappedTypeName = "pointer"
let unwrappedTypeName = "pointer"
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName)
of GIInfoType.Unresolved: #--------------------------------------------------
#TODO fix
let wrappedTypeName = "pointer"
let unwrappedTypeName = "pointer"
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName)
else: #--------------------------------------------------------------------
#output.writeln iface.getName & " " & $iface.getType & " ??????"
#assert false
let wrappedTypeName = iface.getName & " " & $iface.getType & " ??????"
let unwrappedTypeName = wrappedTypeName
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName)
#echo " ", ns, "::", iface.getName, " ", iface.getType
of GITypeTag.Array: #========================================================
# todo: handle different kinds of arrays
#return "openarray[", info.getName, "]"
let
itemType: GITypeInfo = info.getParamType(0)
itemIdentity = itemType.identifyType
# special case: array of uint8
var wrappedTypeName, unwrappedTypeName: string
var wrapTo = Wrapper(id)
var unwrapFrom = Wrapper(id)
if itemType.getTag == GITypeTag.UINT8:
wrappedTypeName = "string"
unwrappedTypeName = "cstring"
wrapTo = Wrapper((x:string)=>"$("&x&")")
unwrapFrom = Wrapper((x:string)=>"cstring("&x&")")
elif callableInfo != nil:
# we are returning this type, can't use openarray
#type cstringArray {.unchecked.} = array[0..0, cstring]
#TODO: check if zero terminated
wrappedTypeName = "zeroTerminatedArray[" & itemIdentity.unwrappedTypeName & "]"
# TODO: we can do better by wrapping this
unwrappedTypeName = wrappedTypeName
elif argInfo != nil:
# this is a parameter, we can use openarray
if argInfo.getDirection == Direction.`inout`:
# but for inout, use uncheckedArray
wrappedTypeName = "var uncheckedArray[" & itemIdentity.unwrappedTypeName & "]"
unwrappedTypeName = wrappedTypeName
else:
if info.getArrayLength == -1:
# no length parameter: uncheckedArray
wrappedTypeName = "uncheckedArray[" & itemIdentity.unwrappedTypeName & "]"
unwrappedTypeName = wrappedTypeName
# TODO fixed length
else:
# we have a size parameter, check if that size parameter is a pointer
# in that case, that size parameter has to be exposed
# ...
wrappedTypeName = "openarray[" & itemIdentity.unwrappedTypeName & "]"
unwrappedTypeName = wrappedTypeName
if info.isPointer:
# is this right?!
wrappedTypeName = "var " & wrappedTypeName
# unwrappedTypeName = "ptr " & unwrappedTypeName
assert info.isPointer
else:
# this is probably a field
# TODO: correct sizes
# let length = info.getArrayLength
let fixedSize = info.getArrayFixedSize
# wrappedTypeName = "array[1, " & itemIdentity.unwrappedTypeName & "]"
# wrappedTypeName = "array[$1, $2, $3]" % [$length, $fixedSize, itemIdentity.unwrappedTypeName]
if info.isZeroTerminated:
wrappedTypeName = "zeroTerminatedArray[$#]" % [itemIdentity.unwrappedTypeName]
else:
wrappedTypeName = "array[$#, $#]" % [$fixedSize, itemIdentity.unwrappedTypeName]
if info.isPointer:
wrappedTypeName = "ptr " & wrappedTypeName
unwrappedTypeName = wrappedTypeName
#return getNimTypeName(info.getTag) & "xxx" & itemType.getNimTypeName
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName,
wrapTo=wrapTo, unwrapFrom=unwrapFrom)
else: #======================================================================
# TODO: special case argument out string: in this case don't wrap, since we need to
# be able to use the argument's adress
if info.isPointer:
if info.getTag == GITypeTag.VOID:
let wrappedTypeName = "pointer"
let unwrappedTypeName = wrappedTypeName
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName)
elif info.getTag == GITypeTag.UTF8 and argInfo != nil and argInfo.getDirection != Direction.`in`:
# special case: string that goes out (or in and out):
# use cstring
let wrappedTypeName = "var ucstring"
let unwrappedTypeName = "ptr ucstring"
# to go from var to ptr: use addr()
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName,
wrapTo=Wrapper(id), unwrapFrom=Wrapper((x:string)=>"addr("&x&")"))
elif info.getTag == GITypeTag.UTF8 and callableInfo != nil:
# special case: string is returned.
# sometimes we want to preserve the actual pointer
# and also we don't want to make an unneccessary copy
# so keep as ucstring
return makeTypeInfo(
wrappedTypeName="ucstring", unwrappedTypeName="ucstring",
wrapTo=Wrapper(id), unwrapFrom=Wrapper(id))
elif info.getTag == GITypeTag.UTF8:# and argInfo != nil:# and argInfo.getDirection == Direction.`in`:
# special case: string but for some reason isPointer is set (we have const guchar*)
# use cstring
let wrappedTypeName = "ustring"
let unwrappedTypeName = "ucstring"
# let xx = info.getArrayLength()
# to go from ucstring to ustring: use ustring($())
# to go from ustring to ucstring: use ucstring()
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName,
wrapTo=Wrapper((x:string)=>"ustring($("&x&"))"),
unwrapFrom=Wrapper((x:string)=>"ucstring("&x&")"))
elif info.getTag == GITypeTag.FILENAME:
# also special case
# TODO: handle out?
if argInfo != nil:
# assert argInfo.getDirection == Direction.`in`
case argInfo.getDirection()
of Direction.`in`:
# to go from ucstring to ustring: use ustring($())
# to go from ustring to ucstring: use ucstring()
return makeTypeInfo(wrappedTypeName="string",
unwrappedTypeName="cstring",
wrapTo=Wrapper((x:string)=>"$("&x&")"),
unwrapFrom=Wrapper((x:string)=>"cstring("&x&")"))
else:
let wrappedTypeName = "var ucstring"
let unwrappedTypeName = "ptr ucstring"
# to go from var to ptr: use addr()
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName,
wrapTo=Wrapper(id), unwrapFrom=Wrapper((x:string)=>"addr("&x&")"))
return makeTypeInfo(wrappedTypeName="string",
unwrappedTypeName="cstring",
wrapTo=Wrapper((x:string)=>"$("&x&")"),
unwrapFrom=Wrapper((x:string)=>"cstring("&x&")"))
else:
var wrappedTypeName = "ptr " & getNimTypeName(info.getTag, wrapped=true)
var unwrappedTypeName = "ptr " & getNimTypeName(info.getTag, wrapped=false)
# if (argInfo != nil):
# case argInfo.getDirection
# of Direction.`in`:
# wrappedTypeName = wrappedTypeName
# unwrappedTypeName = unwrappedTypeName
# else:
# wrappedTypeName = "var " & wrappedTypeName
# unwrappedTypeName = unwrappedTypeName
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName)
# return "PTR " & $info.getTag & " " & getNimTypeName(info.getTag, wrapped)
var wrappedTypeName = getNimTypeName(info.getTag, wrapped=true)
var unwrappedTypeName = getNimTypeName(info.getTag, wrapped=false)
var unwrapFrom = Wrapper(id)
if argInfo != nil and argInfo.getDirection != Direction.`in`:
wrappedTypeName = "var " & wrappedTypeName
unwrappedTypeName = "ptr " & unwrappedTypeName
unwrapFrom = Wrapper((x:string)=>"addr("&x&")")
return makeTypeInfo(wrappedTypeName=wrappedTypeName,
unwrappedTypeName=unwrappedTypeName,
wrapTo=Wrapper(id), unwrapFrom=unwrapFrom)
#info.getTag.toString & "x"
proc identifyType(argInfo: GIArgInfo): NimTypeInfo =
identifyType(argInfo.getType, argInfo=argInfo)
proc identifyReturnType(callableInfo: GICallableInfo): NimTypeInfo =
identifyType(callableInfo.getReturnType, callableInfo=callableInfo)
proc isAmbiguousAmongSuperclasses(fieldName: string, oi: GIObjectInfo): bool =
var this = oi
while this.pointer != nil:
this = this.getParent
for field in oi.fields:
if fieldName == escapeName(field.getName):
return true
return false
# proc disambiguateAmongSuperclasses(fieldName: string, oi: GIObjectInfo): string =
# var newFieldName = fieldName
# var extraNum = 1
# while isAmbiguousAmongSuperclasses(newFieldName, oi):
# inc extraNum
# newFieldName = fieldName & $extraNum
# return newFieldName
proc disambiguateAmongSuperclasses(fieldName: string, oi: GIObjectInfo): string =
var newFieldName = fieldName
# var extraNum = 1
if isAmbiguousAmongSuperclasses(newFieldName, oi):
newFieldName = fieldName & "_" & oi.getNamespace.toLowerAscii & oi.getName.toLowerAscii
return newFieldName
proc createTypeDeclaration(oi: GIObjectInfo) =
assert oi.pointer != nil
let
# glibTypeName = oi.getTypeName()
#iface = info.getInterface
className = oi.getName()
nimStructName = "T" & className
parent: GIObjectInfo = oi.getParent
parentClassName = if parent.pointer != nil: getQualifiedNimStructName(parent) else: "TRoot"
#echo " # ", glibTypeName
if oi.getFundamental:
output.writeln " # fundamental"
output.writeln " # ", oi.getRefFunction
output.writeln " # ", oi.getUnrefFunction
# TODO is this used at all??
# if oi.getType == GIInfoType.STRUCT:
# output.writeln " # is struct"
# output.write " #"
output.writeln " ", className, "* = ref GSmartPtr[", nimStructName, "]"
# TODO: move unwrapped to private module
output.writeln " ", nimStructName, "* = object of " & parentClassName
var first = true
for field in oi.fields:
let
fti: GITypeInfo = field.getType
fieldTypeIdentity = fti.identifyType
let fieldName = disambiguateAmongSuperclasses(escapeName(field.getName), oi)
if first:
first = false
if fti.getTag == GITypeTag.Interface:
let fieldTypeIface = fti.getInterface
if fieldTypeIface.equal(parent):
output.writeln " # omitted field for base class:"
output.writeln " # ", fieldName, ": ", fieldTypeIdentity.unwrappedTypeName
continue
output.writeln " # warning, first field is not of base class type !!!!!!!!!"
output.writeln " ", fieldName, ": ", fieldTypeIdentity.unwrappedTypeName
output.writeln ""
# doesn't work...
discard """ iterator enumerate[T](itera: iterator():T {.closure.}): tuple[index:int, value:T] =
var i = 0
while true:
let it = itera()
if itera.finished: break
yield (index:i, value:it)
inc i
"""
# iterator items[T](itera: iterator():T {.closure.}): T =
# while true:
# let it = itera()
# if itera.finished: break
# yield it
iterator filter[T](itera: iterator():T {.closure.}, pred: proc(it:T):bool): T =
while true:
let it = itera()
if itera.finished: break
if pred(it):
yield it
proc createEnum(ei: GIEnumInfo) =
let isFlags = ei.getType == GIInfoType.FLAGS
if isFlags:
output.writeln " # flags"
let scalarName = "S" & ei.getName
output.writeln " ", scalarName, "* = ", ei.getStorageType.getNimTypeName
for name, value in ei.attributes():
output.writeln "# attr: $1: $2" % [name, value]
output.writeln " ", ei.getName, "* {.pure,size: sizeof(", ei.getStorageType.getNimTypeName, ").} = enum"
var prev:int64 = -1
var first = true
let values = toSeq(ei.values)
proc cmp(x,y: GIValueInfo): int =
int(x.getValue-y.getValue)
for v in values.sorted(cmp):
let cur = v.getValue
output.write " "
if not first and cur == prev:
output.write " # "
if first: first = false
# else: output.write ",\n"
output.write escapeName(v.getName, for_public=true)
if isFlags or cur != prev+1: # or cur mod 5 == 0:
output.write " = ", cur
# if v.isDeprecated:
# output.writeln " # deprecated"
output.writeln ","
prev = cur
output.write "\n"
output.write "\n"
# template `?.`*(a, b: expr): expr =
# type T = type(a.b)
# # if a != nil:
# if nillike(a):
# a.b
# else:
# default[T]()
template validOrNil[T](x: ref GSmartPtr[T]): ref GSmartPtr[T] =
if x != nil and x.pointer != nil:
x
else:
nil
proc createLiteralSignature(meth: GIFunctionInfo, parent: GIRegisteredTypeInfo, litProcName: string, public: bool) =
let
flags = meth.getFlags
returnType: GITypeInfo = meth.getReturnType
retIdentity = meth.identifyReturnType
publicStar = if public: "" else: "*"
output.write "proc ", litProcName, publicStar, "("
var first: bool
if FunctionInfoFlags.isMethod in flags:
output.write "self: ", "ptr " & getQualifiedNimStructName(parent)
first = false
else:
first = true
for arg in meth.args:
if first: first = false
else: output.write ", "
output.write escapeName(arg.getName), ": "
let identity = identifyType(arg)
output.write identity.unwrappedTypeName
if meth.canThrowGerror:
if first: first = false
else: output.write ", "
output.write "error: ptr PGError=nil"
output.write ")"
if returnType.getTag != GITypeTag.VOID:
output.write ": ", retIdentity.unwrappedTypeName
output.write " {.cdecl, dynlib: lib, importc: \"", meth.getSymbol, "\""
if meth.isDeprecated:
output.write ", deprecated"
output.write ".}"
output.write "\n"
proc createSignalDeclaration(signal: GISignalInfo, oi: GIObjectInfo) =
output.write "# ", oi.getName, " - ", signal.getName, " - "
let nargs = signal.getNArgs
output.writeln
for arg in signal.args:
let identity = identifyType(arg)
output.write "# ", arg.getName, ": "
output.write identity.wrappedTypeName, " (", identity.unwrappedTypeName, ")"
output.write " ", ($arg.getDirection).toUpper
# output.write ($arg.getType.isPointer)
output.writeln
# output.writeln
if nargs > 1:
# not implemented yet
output.writeln("# nargs == $1: not implemented" % [$nargs])
return
let normalizedName = signal.getName.escapeName.replace("-", "_");
# let identity = oi.identifyTypeForStructOrUnion(isArg=true, argDirection=Direction.`in`)
# var parts = @[identity.wrappedTypeName, identity.unwrappedTypeName, normalizedName]
var parts = @[oi.getQualifiedNimStructName(wrapped=true),
oi.getQualifiedNimStructName(wrapped=false),
normalizedName]
for arg in signal.args:
let identity = identifyType(arg)
parts.add(arg.getName.escapeName)
parts.add(identity.wrappedTypeName)
if nargs > 1: # temporary
parts.add(identity.unwrappedTypeName)
# parts.add("(x:" & identity.unwrappedTypeName & "): " & identity.wrappedTypeName & " => " & identity.wrapTo("x"))
output.writeln "declareSignal(" & parts.join(", ") & ")"