mirror of
https://github.com/Drezil/dear-imgui.hs.git
synced 2024-11-22 16:57:00 +00:00
Parse enums from headers & generate code (#19)
This commit is contained in:
sheaf
GitHub
parent
81582ba6eb
commit
895f5c1926
2
Main.hs
2
Main.hs
@ -70,7 +70,7 @@ loop w checked color slider r = do
|
||||
True -> putStrLn "Oh hi Mark"
|
||||
False -> return ()
|
||||
|
||||
sameLine >> arrowButton "Arrow" ImGuiDirUp
|
||||
sameLine >> arrowButton "Arrow" ImGuiDir_Up
|
||||
|
||||
sameLine >> checkbox "Check!" checked >>= \case
|
||||
True -> readIORef checked >>= print
|
||||
|
||||
@ -2,6 +2,8 @@ cabal-version: 3.0
|
||||
name: dear-imgui
|
||||
version: 1.0.0
|
||||
build-type: Simple
|
||||
data-files:
|
||||
imgui/imgui.h
|
||||
|
||||
flag opengl
|
||||
description:
|
||||
@ -27,16 +29,25 @@ flag sdl
|
||||
manual:
|
||||
False
|
||||
|
||||
library
|
||||
exposed-modules:
|
||||
DearImGui
|
||||
DearImGui.Context
|
||||
hs-source-dirs:
|
||||
src
|
||||
common common
|
||||
build-depends:
|
||||
base
|
||||
>= 4.12 && < 4.17
|
||||
default-language:
|
||||
Haskell2010
|
||||
ghc-options:
|
||||
-Wall
|
||||
|
||||
library
|
||||
import: common
|
||||
hs-source-dirs:
|
||||
src
|
||||
exposed-modules:
|
||||
DearImGui
|
||||
other-modules:
|
||||
DearImGui.Context
|
||||
DearImGui.Enums
|
||||
DearImGui.Structs
|
||||
cxx-sources:
|
||||
imgui/imgui.cpp
|
||||
imgui/imgui_demo.cpp
|
||||
@ -50,7 +61,7 @@ library
|
||||
include-dirs:
|
||||
imgui
|
||||
build-depends:
|
||||
base
|
||||
dear-imgui-generator
|
||||
, containers
|
||||
, managed
|
||||
, inline-c
|
||||
@ -117,30 +128,55 @@ library
|
||||
exposed-modules:
|
||||
DearImGui.SDL.Vulkan
|
||||
|
||||
library dear-imgui-generator
|
||||
import: common
|
||||
hs-source-dirs: generator
|
||||
exposed-modules:
|
||||
DearImGui.Generator
|
||||
, DearImGui.Generator.Parser
|
||||
, DearImGui.Generator.Tokeniser
|
||||
, DearImGui.Generator.Types
|
||||
build-depends:
|
||||
template-haskell
|
||||
>= 2.15 && < 2.19
|
||||
, directory
|
||||
>= 1.3 && < 1.4
|
||||
, filepath
|
||||
>= 1.4 && < 1.5
|
||||
, megaparsec
|
||||
>= 9.0 && < 9.1
|
||||
, parser-combinators
|
||||
>= 1.2.0 && < 1.3
|
||||
, scientific
|
||||
>= 0.3.6.2 && < 0.3.7
|
||||
, text
|
||||
>= 1.2.4 && < 1.3
|
||||
, th-lift
|
||||
>= 0.7 && < 0.9
|
||||
, transformers
|
||||
>= 0.5.6 && < 0.6
|
||||
, unordered-containers
|
||||
>= 0.2.11 && < 0.2.14
|
||||
|
||||
executable test
|
||||
import: common
|
||||
main-is: Main.hs
|
||||
default-language: Haskell2010
|
||||
build-depends: base, sdl2, gl, dear-imgui
|
||||
ghc-options: -Wall
|
||||
|
||||
build-depends: sdl2, gl, dear-imgui
|
||||
|
||||
executable readme
|
||||
import: common
|
||||
main-is: Readme.hs
|
||||
hs-source-dirs: examples
|
||||
default-language: Haskell2010
|
||||
build-depends: base, sdl2, gl, dear-imgui, managed
|
||||
ghc-options: -Wall
|
||||
build-depends: sdl2, gl, dear-imgui, managed
|
||||
|
||||
executable vulkan
|
||||
import: common
|
||||
main-is: Main.hs
|
||||
other-modules: Attachments, Backend, Input, Util
|
||||
hs-source-dirs: examples/vulkan
|
||||
default-language: Haskell2010
|
||||
build-depends:
|
||||
dear-imgui
|
||||
, base
|
||||
>= 4.13 && < 4.16
|
||||
, bytestring
|
||||
>= 0.10.10.0 && < 0.12
|
||||
, containers
|
||||
|
||||
159
generator/DearImGui/Generator.hs
Normal file
159
generator/DearImGui/Generator.hs
Normal file
@ -0,0 +1,159 @@
|
||||
{-# LANGUAGE BlockArguments #-}
|
||||
{-# LANGUAGE CPP #-}
|
||||
{-# LANGUAGE NamedFieldPuns #-}
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
{-# LANGUAGE RecordWildCards #-}
|
||||
{-# LANGUAGE TemplateHaskell #-}
|
||||
|
||||
module DearImGui.Generator
|
||||
( declareEnumerations )
|
||||
where
|
||||
|
||||
-- base
|
||||
import Data.Coerce
|
||||
( coerce )
|
||||
import Data.Bits
|
||||
( Bits )
|
||||
import Data.Foldable
|
||||
( toList )
|
||||
import Data.Traversable
|
||||
( for )
|
||||
import Foreign.Storable
|
||||
( Storable )
|
||||
|
||||
-- directory
|
||||
import System.Directory
|
||||
( canonicalizePath )
|
||||
|
||||
-- filepath
|
||||
import System.FilePath
|
||||
( takeDirectory )
|
||||
|
||||
-- megaparsec
|
||||
import qualified Text.Megaparsec as Megaparsec
|
||||
( ParseErrorBundle(bundleErrors), parse, parseErrorPretty )
|
||||
|
||||
-- template-haskell
|
||||
import qualified Language.Haskell.TH as TH
|
||||
import qualified Language.Haskell.TH.Syntax as TH
|
||||
|
||||
-- text
|
||||
import qualified Data.Text as Text
|
||||
( isInfixOf, null, unpack, unlines )
|
||||
import qualified Data.Text.IO as Text
|
||||
( readFile )
|
||||
|
||||
-- dear-imgui-generator
|
||||
import qualified DearImGui.Generator.Parser as Parser
|
||||
( headers )
|
||||
import DearImGui.Generator.Tokeniser
|
||||
( tokenise )
|
||||
import DearImGui.Generator.Types
|
||||
( Comment(..), Enumeration(..), Headers(..) )
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
-- Obtaining parsed header data.
|
||||
|
||||
headers :: Headers
|
||||
headers = $( do
|
||||
currentPath <- TH.loc_filename <$> TH.location
|
||||
TH.lift =<< TH.runIO do
|
||||
headersPath <- canonicalizePath ( takeDirectory currentPath <> "/../../imgui/imgui.h" )
|
||||
headersSource <- Text.readFile headersPath
|
||||
tokens <- case tokenise headersSource of
|
||||
Left err -> error ( "Couldn't tokenise Dear ImGui headers:\n\n" <> show err )
|
||||
Right toks -> pure toks
|
||||
case Megaparsec.parse Parser.headers "" tokens of
|
||||
Left err -> error $
|
||||
"Couldn't parse Dear ImGui headers:\n\n" <>
|
||||
( unlines ( map Megaparsec.parseErrorPretty . toList $ Megaparsec.bundleErrors err ) )
|
||||
Right res -> pure res
|
||||
)
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
-- Generating TH splices.
|
||||
|
||||
declareEnumerations :: TH.Name -> TH.Name -> TH.Q [ TH.Dec ]
|
||||
declareEnumerations finiteEnumName countName = do
|
||||
concat <$> mapM ( declareEnumeration finiteEnumName countName ) ( enums headers )
|
||||
|
||||
declareEnumeration :: TH.Name -> TH.Name -> Enumeration -> TH.Q [ TH.Dec ]
|
||||
declareEnumeration finiteEnumName countName ( Enumeration {..} ) = do
|
||||
let
|
||||
enumNameStr :: String
|
||||
enumNameStr = Text.unpack enumName
|
||||
isFlagEnum :: Bool
|
||||
isFlagEnum = "Flags" `Text.isInfixOf` enumName
|
||||
tyName <- TH.newName enumNameStr
|
||||
|
||||
conName <- TH.newName enumNameStr
|
||||
let
|
||||
newtypeCon :: TH.Q TH.Con
|
||||
newtypeCon =
|
||||
TH.normalC conName
|
||||
[ TH.bangType
|
||||
( TH.bang TH.noSourceUnpackedness TH.noSourceStrictness )
|
||||
( TH.conT enumType )
|
||||
]
|
||||
classes :: [ TH.Q TH.Type ]
|
||||
classes
|
||||
| isFlagEnum
|
||||
= map TH.conT [ ''Eq, ''Ord, ''Storable, ''Bits ]
|
||||
| otherwise
|
||||
= map TH.conT [ ''Eq, ''Ord, ''Storable ]
|
||||
derivClause :: TH.Q TH.DerivClause
|
||||
derivClause = TH.derivClause ( Just TH.NewtypeStrategy ) classes
|
||||
newtypeDecl <-
|
||||
#if MIN_VERSION_base(4,16,0)
|
||||
( if null docs
|
||||
then TH.newtypeD
|
||||
else
|
||||
\ ctx name bndrs kd con derivs ->
|
||||
TH.newtypeD_doc ctx name ( fmap pure bndrs ) ( fmap pure kd ) ( con, "", [] ) derivs
|
||||
( Text.unpack . Text.unlines . coerce $ docs )
|
||||
)
|
||||
#else
|
||||
TH.newtypeD
|
||||
#endif
|
||||
( pure [] ) tyName [] Nothing newtypeCon [ derivClause ]
|
||||
|
||||
mbAddFiniteEnumInst <-
|
||||
if hasExplicitCount
|
||||
then do
|
||||
finiteEnumInst <-
|
||||
TH.instanceD ( pure [] ) ( TH.appT ( TH.conT finiteEnumName ) ( TH.conT tyName ) )
|
||||
[ TH.tySynInstD ( TH.TySynEqn Nothing
|
||||
<$> TH.appT ( TH.conT countName ) ( TH.conT tyName )
|
||||
<*> TH.litT ( TH.numTyLit enumSize )
|
||||
)
|
||||
]
|
||||
pure ( finiteEnumInst : )
|
||||
else pure id
|
||||
|
||||
synonyms <- for patterns \ ( patternName, patternValue, CommentText patDoc ) -> do
|
||||
let
|
||||
patNameStr :: String
|
||||
patNameStr = Text.unpack patternName
|
||||
patName <- TH.newName patNameStr
|
||||
patSynSig <- TH.patSynSigD patName ( TH.conT tyName )
|
||||
pat <-
|
||||
#if MIN_VERSION_base(4,16,0)
|
||||
( if Text.null patDoc
|
||||
then TH.patSynD
|
||||
else
|
||||
\ nm args dir pat ->
|
||||
TH.patSynD_doc nm args dir pat
|
||||
( Text.unpack patDoc ) []
|
||||
)
|
||||
#else
|
||||
TH.patSynD
|
||||
#endif
|
||||
patName ( TH.prefixPatSyn [] ) TH.implBidir
|
||||
( TH.conP conName [ TH.litP $ TH.integerL patternValue ] )
|
||||
pure ( patSynSig, pat )
|
||||
|
||||
pure ( newtypeDecl : mbAddFiniteEnumInst ( unpairs synonyms ) )
|
||||
|
||||
unpairs :: [ ( a, a ) ] -> [ a ]
|
||||
unpairs [] = []
|
||||
unpairs ( ( x, y ) : as ) = x : y : unpairs as
|
||||
392
generator/DearImGui/Generator/Parser.hs
Normal file
392
generator/DearImGui/Generator/Parser.hs
Normal file
@ -0,0 +1,392 @@
|
||||
{-# LANGUAGE BlockArguments #-}
|
||||
{-# LANGUAGE DerivingStrategies #-}
|
||||
{-# LANGUAGE DuplicateRecordFields #-}
|
||||
{-# LANGUAGE FlexibleContexts #-}
|
||||
{-# LANGUAGE LambdaCase #-}
|
||||
{-# LANGUAGE NamedFieldPuns #-}
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
{-# LANGUAGE RecordWildCards #-}
|
||||
{-# LANGUAGE ScopedTypeVariables #-}
|
||||
{-# LANGUAGE TemplateHaskellQuotes #-}
|
||||
{-# LANGUAGE TypeApplications #-}
|
||||
{-# LANGUAGE ViewPatterns #-}
|
||||
|
||||
module DearImGui.Generator.Parser
|
||||
( CustomParseError(..)
|
||||
, headers
|
||||
)
|
||||
where
|
||||
|
||||
-- base
|
||||
import Control.Applicative
|
||||
( (<|>), many, optional, some )
|
||||
import Control.Monad
|
||||
( void )
|
||||
import Data.Bits
|
||||
( Bits(shiftL) )
|
||||
import Data.Char
|
||||
( isSpace, toLower )
|
||||
import Data.Either
|
||||
( partitionEithers )
|
||||
import Data.Functor
|
||||
( ($>) )
|
||||
import Data.Int
|
||||
( Int64 )
|
||||
import Data.Maybe
|
||||
( catMaybes, fromMaybe )
|
||||
import Foreign.C.Types
|
||||
( CInt )
|
||||
|
||||
-- template-haskell
|
||||
import qualified Language.Haskell.TH as TH
|
||||
( Name )
|
||||
|
||||
-- megaparsec
|
||||
import Text.Megaparsec
|
||||
( MonadParsec(..), ShowErrorComponent(..)
|
||||
, (<?>), anySingle, customFailure, single
|
||||
)
|
||||
|
||||
-- parser-combinators
|
||||
import Control.Applicative.Combinators
|
||||
( manyTill, option, sepBy1, skipManyTill )
|
||||
|
||||
-- scientific
|
||||
import Data.Scientific
|
||||
( floatingOrInteger, toBoundedInteger )
|
||||
|
||||
-- text
|
||||
import Data.Text
|
||||
( Text )
|
||||
import qualified Data.Text as Text
|
||||
( all, any, breakOn, drop, dropWhile, dropWhileEnd
|
||||
, length, stripPrefix, unlines, unpack
|
||||
)
|
||||
|
||||
-- transformers
|
||||
import Control.Monad.Trans.State.Strict
|
||||
( StateT(..)
|
||||
, get, modify'
|
||||
)
|
||||
|
||||
-- unordered-containers
|
||||
import Data.HashMap.Strict
|
||||
( HashMap )
|
||||
import qualified Data.HashMap.Strict as HashMap
|
||||
( fromList, insert, lookup )
|
||||
|
||||
-- dear-imgui-generator
|
||||
import DearImGui.Generator.Tokeniser
|
||||
( Tok(..) )
|
||||
import DearImGui.Generator.Types
|
||||
( Comment(..), Enumeration(..), Headers(..) )
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
-- Parse error type.
|
||||
|
||||
data CustomParseError
|
||||
= Couldn'tLookupEnumValues
|
||||
{ enumName :: !Text
|
||||
, problems :: ![Text]
|
||||
}
|
||||
| MissingForwardDeclaration
|
||||
{ enumName :: !Text }
|
||||
| UnexpectedSection
|
||||
{ sectionName :: !Text
|
||||
, problem :: ![Text]
|
||||
}
|
||||
deriving stock ( Show, Eq, Ord )
|
||||
|
||||
instance ShowErrorComponent CustomParseError where
|
||||
showErrorComponent ( Couldn'tLookupEnumValues { enumName, problems } ) = Text.unpack $
|
||||
"Couldn't lookup the following values in enum " <> enumName <> ":\n"
|
||||
<> Text.unlines ( map ( " - " <> ) problems )
|
||||
showErrorComponent ( MissingForwardDeclaration { enumName } ) = Text.unpack $
|
||||
"Missing forward declaration for enum named " <> enumName
|
||||
showErrorComponent ( UnexpectedSection { sectionName, problem } ) = Text.unpack $
|
||||
"Unexpected section name.\n\
|
||||
\Expected: " <> sectionName <> "\n\
|
||||
\ Actual: " <> Text.unlines ( map ( " " <> ) problem )
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
-- Parsing headers.
|
||||
|
||||
headers :: MonadParsec CustomParseError [Tok] m => m Headers
|
||||
headers = do
|
||||
_ <- skipManyTill anySingle ( namedSection "Header mess" )
|
||||
_ <- skipManyTill anySingle ( namedSection "Forward declarations" )
|
||||
( _structNames, enumNamesAndTypes ) <- forwardDeclarations
|
||||
_ <- skipManyTill anySingle ( namedSection "Dear ImGui end-user API functions" )
|
||||
_ <- skipManyTill anySingle ( namedSection "Flags & Enumerations" )
|
||||
( _defines, enums ) <- partitionEithers <$>
|
||||
manyTill
|
||||
( ( Left <$> try ignoreDefine )
|
||||
<|> ( Right <$> enumeration enumNamesAndTypes )
|
||||
)
|
||||
( namedSection "Helpers: Memory allocations macros, ImVector<>" )
|
||||
_ <- skipManyTill anySingle ( namedSection "ImGuiStyle" )
|
||||
_ <- skipManyTill anySingle ( namedSection "ImGuiIO" )
|
||||
_ <- skipManyTill anySingle ( namedSection "Misc data structures" )
|
||||
_ <- skipManyTill anySingle ( namedSection "Obsolete functions" )
|
||||
_ <- skipManyTill anySingle ( namedSection "Helpers" )
|
||||
_ <- skipManyTill anySingle ( namedSection "Drawing API" )
|
||||
_ <- skipManyTill anySingle ( namedSection "Font API" )
|
||||
|
||||
pure ( Headers { enums } )
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
-- Parsing forward declarations.
|
||||
|
||||
forwardDeclarations
|
||||
:: MonadParsec CustomParseError [Tok] m
|
||||
=> m ( HashMap Text Comment, HashMap Text ( TH.Name, Comment ) )
|
||||
forwardDeclarations = do
|
||||
_ <- many comment
|
||||
structs <- many do
|
||||
keyword "struct"
|
||||
structName <- identifier
|
||||
reservedSymbol ';'
|
||||
doc <- comment
|
||||
pure ( structName, doc )
|
||||
_ <- many comment
|
||||
enums <- many do
|
||||
keyword "typedef"
|
||||
ty <- enumTypeName
|
||||
enumName <- identifier
|
||||
reservedSymbol ';'
|
||||
doc <- commentText <$> comment
|
||||
pure ( enumName, ( ty, CommentText <$> Text.drop 2 . snd $ Text.breakOn "//" doc ) )
|
||||
-- Stopping after simple structs and enums for now.
|
||||
pure ( HashMap.fromList structs, HashMap.fromList enums )
|
||||
|
||||
enumTypeName :: MonadParsec e [Tok] m => m TH.Name
|
||||
enumTypeName = keyword "int" $> ''CInt
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
-- Parsing enumerations.
|
||||
|
||||
data EnumState = EnumState
|
||||
{ enumValues :: HashMap Text Integer
|
||||
, currEnumTag :: Integer
|
||||
, enumSize :: Integer
|
||||
, hasExplicitCount :: Bool
|
||||
}
|
||||
|
||||
enumeration :: MonadParsec CustomParseError [Tok] m => HashMap Text ( TH.Name, Comment ) -> m Enumeration
|
||||
enumeration enumNamesAndTypes = do
|
||||
inlineDocs <- many comment
|
||||
keyword "enum"
|
||||
fullEnumName <- identifier
|
||||
let
|
||||
enumName :: Text
|
||||
enumName = Text.dropWhileEnd ( == '_' ) fullEnumName
|
||||
( enumType, forwardDoc ) <- case HashMap.lookup enumName enumNamesAndTypes of
|
||||
Just res -> pure res
|
||||
Nothing -> customFailure ( MissingForwardDeclaration { enumName } )
|
||||
let
|
||||
docs :: [Comment]
|
||||
docs = forwardDoc : CommentText "" : inlineDocs
|
||||
reservedSymbol '{'
|
||||
( patterns, EnumState { enumSize, hasExplicitCount } ) <-
|
||||
( `runStateT` EnumState { enumValues = mempty, currEnumTag = 0, enumSize = 0, hasExplicitCount = False } ) $
|
||||
catMaybes
|
||||
<$> many
|
||||
( some ignoredPatternContent $> Nothing
|
||||
<|> enumerationPattern fullEnumName
|
||||
)
|
||||
reservedSymbol '}'
|
||||
reservedSymbol ';'
|
||||
pure ( Enumeration { .. } )
|
||||
|
||||
ignoredPatternContent :: MonadParsec e [Tok] m => m ()
|
||||
ignoredPatternContent = void ( try comment ) <|> cppConditional
|
||||
|
||||
enumerationPattern
|
||||
:: MonadParsec CustomParseError [ Tok ] m
|
||||
=> Text
|
||||
-> StateT EnumState m ( Maybe ( Text, Integer, Comment ) )
|
||||
enumerationPattern enumName = do
|
||||
mbPatNameVal <- patternNameAndValue enumName
|
||||
_ <- optional $ reservedSymbol ','
|
||||
comm <- fromMaybe ( CommentText "" ) <$> optional comment
|
||||
pure $
|
||||
case mbPatNameVal of
|
||||
Nothing -> Nothing
|
||||
Just ( patName, patValue ) -> Just ( patName, patValue, comm )
|
||||
|
||||
patternNameAndValue
|
||||
:: forall m
|
||||
. MonadParsec CustomParseError [ Tok ] m
|
||||
=> Text
|
||||
-> StateT EnumState m ( Maybe ( Text, Integer ) )
|
||||
patternNameAndValue enumName =
|
||||
try do
|
||||
sz <- count
|
||||
modify' ( ( \ st -> st { enumSize = sz, hasExplicitCount = True } ) :: EnumState -> EnumState )
|
||||
pure Nothing
|
||||
<|> do
|
||||
pat@( _, val ) <- value
|
||||
modify' ( \ st -> st { enumSize = ( enumSize :: EnumState -> Integer ) st + 1, currEnumTag = val + 1} )
|
||||
pure ( Just pat )
|
||||
where
|
||||
count :: StateT EnumState m Integer
|
||||
count = do
|
||||
_ <- single ( Identifier $ enumName <> "COUNT" )
|
||||
mbVal <- optional do
|
||||
_ <- reservedSymbol '='
|
||||
integerExpression
|
||||
case mbVal of
|
||||
Nothing -> currEnumTag <$> get
|
||||
Just ct -> pure ct
|
||||
value :: StateT EnumState m ( Text, Integer )
|
||||
value = do
|
||||
name <- identifier
|
||||
val <- patternRHS
|
||||
modify' ( \ st -> st { enumValues = HashMap.insert name val ( enumValues st ) } )
|
||||
pure ( name, val )
|
||||
patternRHS :: StateT EnumState m Integer
|
||||
patternRHS =
|
||||
( do
|
||||
reservedSymbol '='
|
||||
try integerExpression <|> try disjunction
|
||||
)
|
||||
<|> ( currEnumTag <$> get )
|
||||
|
||||
disjunction :: StateT EnumState m Integer
|
||||
disjunction = do
|
||||
( summands :: [Text] ) <- identifier `sepBy1` symbol "|"
|
||||
valsMap <- enumValues <$> get
|
||||
let
|
||||
res :: Either [ Text ] Integer
|
||||
res = foldr
|
||||
( \ summand errsOrVal -> case HashMap.lookup summand valsMap of
|
||||
Nothing -> case errsOrVal of { Right _ -> Left [ summand ]; Left errs -> Left ( summand : errs ) }
|
||||
Just v -> case errsOrVal of { Right v' -> Right ( v + v' ); Left errs -> Left errs }
|
||||
)
|
||||
( Right 0 )
|
||||
summands
|
||||
case res of
|
||||
Left problems -> customFailure ( Couldn'tLookupEnumValues { enumName, problems } )
|
||||
Right v -> pure v
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
-- Simple token parsers.
|
||||
|
||||
comment :: MonadParsec e [ Tok ] m => m Comment
|
||||
comment = CommentText <$>
|
||||
token ( \ case { Comment comm -> Just comm; _ -> Nothing } ) mempty
|
||||
<?> "comment"
|
||||
|
||||
keyword :: MonadParsec e [ Tok ] m => Text -> m ()
|
||||
keyword kw = token ( \ case { Keyword kw' | kw == kw' -> Just (); _ -> Nothing } ) mempty
|
||||
<?> ( Text.unpack kw <> " (keyword)" )
|
||||
|
||||
identifier :: MonadParsec e [ Tok ] m => m Text
|
||||
identifier = token ( \ case { Identifier i -> Just i; _ -> Nothing } ) mempty
|
||||
<?> "identifier"
|
||||
|
||||
{-
|
||||
prefixedIdentifier :: MonadParsec e [ Tok ] m => Text -> m Text
|
||||
prefixedIdentifier prefix =
|
||||
token
|
||||
( \ case
|
||||
{ Identifier i -> Text.dropWhile ( == '_' ) <$> Text.stripPrefix prefix i
|
||||
; _ -> Nothing
|
||||
}
|
||||
) mempty
|
||||
-}
|
||||
|
||||
reservedSymbol :: MonadParsec e [ Tok ] m => Char -> m ()
|
||||
reservedSymbol s = token ( \ case { ReservedSymbol s' | s == s' -> Just (); _ -> Nothing } ) mempty
|
||||
<?> ( [s] <> " (reserved symbol)" )
|
||||
|
||||
symbol :: MonadParsec e [ Tok ] m => Text -> m ()
|
||||
symbol s = token ( \ case { Symbolic s' | s == s' -> Just (); _ -> Nothing } ) mempty
|
||||
<?> ( Text.unpack s <> " (symbol)" )
|
||||
|
||||
integerExpression :: MonadParsec e [ Tok ] m => m Integer
|
||||
integerExpression = try integerPower <|> integer
|
||||
|
||||
integerPower :: MonadParsec e [ Tok ] m => m Integer
|
||||
integerPower = do
|
||||
a <- integer
|
||||
_ <- symbol "<<"
|
||||
i <- integer
|
||||
pure ( a `shiftL` fromIntegral i )
|
||||
|
||||
integer :: forall e m. MonadParsec e [ Tok ] m => m Integer
|
||||
integer =
|
||||
option id mkSign <*>
|
||||
token
|
||||
( \ case {
|
||||
Number i suff
|
||||
| Just _ <- toBoundedInteger @Int64 i
|
||||
, Right i' <- floatingOrInteger @Float @Integer i
|
||||
, not ( Text.any ( (== 'f' ) . toLower ) suff )
|
||||
-> Just i';
|
||||
_ -> Nothing
|
||||
}
|
||||
)
|
||||
mempty
|
||||
<?> "integer"
|
||||
where
|
||||
mkSign :: m ( Integer -> Integer )
|
||||
mkSign = ( symbol "+" $> id ) <|> ( symbol "-" $> negate )
|
||||
|
||||
section :: MonadParsec e [ Tok ] m => m [Text]
|
||||
section =
|
||||
do
|
||||
sectionText <- try do
|
||||
separator
|
||||
token
|
||||
( \ case
|
||||
{ Comment txt -> fmap ( Text.dropWhile isSpace )
|
||||
. Text.stripPrefix "[SECTION]"
|
||||
. Text.dropWhile isSpace
|
||||
$ txt
|
||||
; _ -> Nothing
|
||||
}
|
||||
) mempty
|
||||
rest <- endOfSectionHeader
|
||||
pure ( sectionText : filter ( not . Text.all ( \ c -> c == '-' || isSpace c ) ) rest )
|
||||
<?> "section"
|
||||
|
||||
separator :: MonadParsec e [ Tok ] m => m ()
|
||||
separator = token
|
||||
( \ case
|
||||
{ Comment hyphens | Text.length hyphens > 10 && Text.all ( == '-') hyphens -> Just ()
|
||||
; _ -> Nothing
|
||||
}
|
||||
) mempty
|
||||
<?> "separator"
|
||||
|
||||
endOfSectionHeader :: MonadParsec e [ Tok ] m => m [Text]
|
||||
endOfSectionHeader = try ( (:) <$> ( commentText <$> comment ) <*> endOfSectionHeader )
|
||||
<|> ( separator $> [] )
|
||||
|
||||
namedSection :: MonadParsec CustomParseError [ Tok ] m => Text -> m ()
|
||||
namedSection sectionName =
|
||||
do
|
||||
sectionTexts <- section
|
||||
case sectionTexts of
|
||||
sectionText : _
|
||||
| Just _ <- Text.stripPrefix sectionName sectionText
|
||||
-> pure ()
|
||||
_ -> customFailure ( UnexpectedSection { sectionName, problem = sectionTexts } )
|
||||
<?> ( "section named " <> Text.unpack sectionName )
|
||||
|
||||
cppDirective :: MonadParsec e [Tok] m => ( Text -> Maybe a ) -> m a
|
||||
cppDirective f = token ( \case { BeginCPP a -> f a; _ -> Nothing } ) mempty
|
||||
|
||||
cppConditional :: MonadParsec e [Tok] m => m ()
|
||||
cppConditional = do
|
||||
void $ cppDirective ( \case { "ifdef" -> Just True; "ifndef" -> Just False; _ -> Nothing } )
|
||||
-- assumes no nesting
|
||||
void $ skipManyTill anySingle ( cppDirective ( \case { "endif" -> Just (); _ -> Nothing } ) )
|
||||
void $ skipManyTill anySingle ( single EndCPPLine )
|
||||
|
||||
ignoreDefine :: MonadParsec e [Tok] m => m ()
|
||||
ignoreDefine = do
|
||||
void $ many comment
|
||||
void $ cppDirective ( \case { "define" -> Just (); _ -> Nothing } )
|
||||
void $ skipManyTill anySingle ( single EndCPPLine )
|
||||
197
generator/DearImGui/Generator/Tokeniser.hs
Normal file
197
generator/DearImGui/Generator/Tokeniser.hs
Normal file
@ -0,0 +1,197 @@
|
||||
{-# LANGUAGE DerivingStrategies #-}
|
||||
{-# LANGUAGE FlexibleContexts #-}
|
||||
{-# LANGUAGE FlexibleInstances #-}
|
||||
{-# LANGUAGE LambdaCase #-}
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
{-# LANGUAGE TypeApplications #-}
|
||||
{-# LANGUAGE ViewPatterns #-}
|
||||
|
||||
module DearImGui.Generator.Tokeniser where
|
||||
|
||||
-- base
|
||||
import Control.Arrow
|
||||
( first, second )
|
||||
import Control.Applicative
|
||||
( (<|>), some )
|
||||
import Data.Char
|
||||
( isAlpha, isAlphaNum, isDigit, isPunctuation, isSpace, isSymbol, toLower )
|
||||
import Data.Function
|
||||
( (&) )
|
||||
import Data.Functor
|
||||
( ($>) )
|
||||
import Data.Monoid
|
||||
( Sum(..) )
|
||||
|
||||
-- megaparsec
|
||||
import Text.Megaparsec
|
||||
( MonadParsec, VisualStream(..)
|
||||
, chunk, parseMaybe, satisfy, try
|
||||
)
|
||||
import Text.Megaparsec.Char.Lexer
|
||||
( hexadecimal, scientific )
|
||||
|
||||
-- parser-combinators
|
||||
import Control.Monad.Combinators
|
||||
( optional )
|
||||
|
||||
-- scientific
|
||||
import Data.Scientific
|
||||
( Scientific )
|
||||
|
||||
-- text
|
||||
import Data.Text
|
||||
( Text )
|
||||
import qualified Data.Text as Text
|
||||
( break, breakOn, cons, drop, dropWhile
|
||||
, head, last, length
|
||||
, pack, snoc, span, strip, tail, take
|
||||
, uncons, unpack
|
||||
)
|
||||
|
||||
-- unordered-containers
|
||||
import Data.HashSet
|
||||
( HashSet )
|
||||
import qualified Data.HashSet as HashSet
|
||||
( fromList, member )
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
data TokeniserError
|
||||
= Couldn'tParseNumber { problem :: !Text }
|
||||
| UnhandledCase { unhandled :: !( Char, Text ) }
|
||||
deriving stock ( Eq, Ord, Show )
|
||||
|
||||
data Tok
|
||||
= Keyword !Text
|
||||
| ReservedSymbol !Char
|
||||
| Symbolic !Text
|
||||
| Identifier !Text
|
||||
| Comment !Text
|
||||
| Char !Char
|
||||
| String !Text
|
||||
| Number !Scientific !Text
|
||||
| BeginCPP !Text
|
||||
| EndCPPLine
|
||||
deriving stock ( Show, Eq, Ord )
|
||||
|
||||
showToken :: Tok -> String
|
||||
showToken = \case
|
||||
Keyword t -> Text.unpack t
|
||||
ReservedSymbol c -> [c]
|
||||
Symbolic t -> Text.unpack t
|
||||
Identifier t -> Text.unpack t
|
||||
Comment t -> Text.unpack t
|
||||
Char c -> [c]
|
||||
String t -> Text.unpack t
|
||||
Number s t -> show s <> Text.unpack t
|
||||
BeginCPP t -> "#" <> Text.unpack t
|
||||
EndCPPLine -> "EndCppLine"
|
||||
|
||||
tokenLength :: Tok -> Int
|
||||
tokenLength = \case
|
||||
Keyword t -> Text.length t
|
||||
ReservedSymbol _ -> 1
|
||||
Symbolic t -> Text.length t
|
||||
Identifier t -> Text.length t
|
||||
Comment t -> Text.length t
|
||||
Char _ -> 1
|
||||
String t -> Text.length t
|
||||
Number s t -> length ( show s ) + Text.length t
|
||||
BeginCPP t -> 1 + Text.length t
|
||||
EndCPPLine -> length ( "EndCPPLine" :: String )
|
||||
|
||||
instance VisualStream [Tok] where
|
||||
showTokens _ = foldMap showToken
|
||||
tokensLength _ = getSum . foldMap ( Sum . tokenLength )
|
||||
|
||||
keywords :: HashSet Text
|
||||
keywords = HashSet.fromList
|
||||
[ "auto", "break", "case", "char", "const", "continue", "default", "do", "double"
|
||||
, "else", "enum", "extern", "float", "for", "goto", "if", "inline", "int", "long"
|
||||
, "register", "restrict", "return", "short", "signed", "sizeof", "static", "struct"
|
||||
, "switch", "typedef", "union", "unsigned", "void", "volatile", "while"
|
||||
]
|
||||
|
||||
reservedSymbols :: HashSet Char
|
||||
reservedSymbols = HashSet.fromList [ '(', ')', '{', '}', ',', ';', '=', '#' ]
|
||||
|
||||
tokenise :: Text -> Either TokeniserError [ Tok ]
|
||||
tokenise ( Text.uncons -> Just ( c, cs ) )
|
||||
| isSpace c
|
||||
= tokenise ( Text.dropWhile isSpace cs )
|
||||
| isAlpha c || c == '_'
|
||||
, let
|
||||
this, rest :: Text
|
||||
( this, rest ) = first ( c `Text.cons` ) $ Text.span ( \ x -> isAlphaNum x || x == '_' ) cs
|
||||
= if this `HashSet.member` keywords
|
||||
then ( Keyword this : ) <$> tokenise rest
|
||||
else ( Identifier this : ) <$> tokenise rest
|
||||
| isDigit c
|
||||
, let
|
||||
this, rest :: Text
|
||||
( this, rest ) = continuePastExponent $ first ( c `Text.cons` ) $ Text.span ( \ x -> isAlphaNum x || x == '.' ) cs
|
||||
= case parseMaybe @() parseNumber this of
|
||||
Just numTok -> ( numTok : ) <$> tokenise rest
|
||||
Nothing -> Left ( Couldn'tParseNumber { problem = this } )
|
||||
| c == '\''
|
||||
, Just ( '\'', rest ) <- Text.uncons ( Text.drop 1 cs )
|
||||
= ( Char ( Text.head cs ) : ) <$> tokenise rest
|
||||
| c == '\"'
|
||||
, let
|
||||
this, rest :: Text
|
||||
( this, rest ) = second Text.tail $ Text.break ( == '"') cs
|
||||
= ( String this : ) <$> tokenise rest
|
||||
| c == '#'
|
||||
, let
|
||||
directive, line, rest :: Text
|
||||
( directive, ( line, rest ) )
|
||||
= cs
|
||||
& Text.break ( isSpace )
|
||||
& second ( Text.break ( `elem` [ '\n', '\r' ] ) )
|
||||
= do
|
||||
lineTokens <- tokenise line
|
||||
restTokens <- tokenise rest
|
||||
pure ( ( BeginCPP directive : lineTokens ) <> ( EndCPPLine : restTokens ) )
|
||||
| c `HashSet.member` reservedSymbols
|
||||
= ( ReservedSymbol c : ) <$> tokenise cs
|
||||
| c == '/'
|
||||
= case Text.take 1 cs of
|
||||
"/" ->
|
||||
let
|
||||
comm, rest :: Text
|
||||
( comm, rest ) = first Text.strip $ Text.break ( `elem` [ '\n', '\r' ] ) ( Text.drop 1 cs )
|
||||
in ( Comment comm : ) <$> tokenise rest
|
||||
"*" ->
|
||||
let
|
||||
comm, rest :: Text
|
||||
( comm, rest ) = Text.breakOn "*/" ( Text.drop 1 cs )
|
||||
in ( Comment comm : ) <$> tokenise rest
|
||||
_ ->
|
||||
let
|
||||
this, rest :: Text
|
||||
( this, rest ) = first ( c `Text.cons` ) $ Text.span ( \ x -> x /= '_' && ( isSymbol x || isPunctuation x ) ) cs
|
||||
in ( Symbolic this : ) <$> tokenise rest
|
||||
| isSymbol c || isPunctuation c
|
||||
, let
|
||||
this, rest :: Text
|
||||
( this, rest ) = first ( c `Text.cons` ) $ Text.span ( \ x -> x /= '_' && ( isSymbol x || isPunctuation x ) ) cs
|
||||
= ( Symbolic this : ) <$> tokenise rest
|
||||
| otherwise
|
||||
= Left $ UnhandledCase { unhandled = ( c, cs ) }
|
||||
tokenise _ = Right []
|
||||
|
||||
continuePastExponent :: ( Text, Text ) -> ( Text, Text )
|
||||
continuePastExponent ( this, rest )
|
||||
| toLower ( Text.last this ) `elem` [ 'e', 'p' ]
|
||||
, Just ( r, rs ) <- Text.uncons rest
|
||||
, r `elem` [ '+', '-' ]
|
||||
, ( this', rest' ) <- Text.span isAlphaNum rs
|
||||
= ( this `Text.snoc` r <> this', rest' )
|
||||
| otherwise
|
||||
= ( this, rest )
|
||||
|
||||
parseNumber :: MonadParsec e Text m => m Tok
|
||||
parseNumber = try ( chunk "0.f" $> Number 0 "f" ) <|> do
|
||||
value <- try ( chunk "0x" *> hexadecimal ) <|> scientific
|
||||
mbSuffix <- fmap ( maybe "" Text.pack ) . optional . some $ satisfy ( \ s -> toLower s `elem` ( "uflz" :: String ) )
|
||||
pure ( Number value mbSuffix )
|
||||
42
generator/DearImGui/Generator/Types.hs
Normal file
42
generator/DearImGui/Generator/Types.hs
Normal file
@ -0,0 +1,42 @@
|
||||
{-# LANGUAGE BangPatterns #-}
|
||||
{-# LANGUAGE DeriveLift #-}
|
||||
{-# LANGUAGE DerivingStrategies #-}
|
||||
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
|
||||
{-# LANGUAGE RecordWildCards #-}
|
||||
{-# LANGUAGE TemplateHaskellQuotes #-}
|
||||
|
||||
module DearImGui.Generator.Types where
|
||||
|
||||
-- template-haskell
|
||||
import qualified Language.Haskell.TH.Syntax as TH
|
||||
( Lift(..), Name(..) )
|
||||
|
||||
-- text
|
||||
import Data.Text
|
||||
( Text )
|
||||
|
||||
-- th-lift
|
||||
import Language.Haskell.TH.Lift
|
||||
() -- 'Lift' instance for Name
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
newtype Comment = CommentText { commentText :: Text }
|
||||
deriving stock ( Show, TH.Lift )
|
||||
deriving newtype ( Eq, Ord )
|
||||
|
||||
data Enumeration
|
||||
= Enumeration
|
||||
{ docs :: ![Comment]
|
||||
, enumName :: !Text
|
||||
, enumSize :: !Integer
|
||||
, enumType :: !TH.Name
|
||||
, hasExplicitCount :: !Bool
|
||||
, patterns :: [ ( Text, Integer, Comment ) ]
|
||||
}
|
||||
deriving stock ( Show, TH.Lift )
|
||||
|
||||
data Headers
|
||||
= Headers
|
||||
{ enums :: [ Enumeration ] }
|
||||
deriving stock ( Show, TH.Lift )
|
||||
@ -122,13 +122,8 @@ module DearImGui
|
||||
, isItemHovered
|
||||
|
||||
-- * Types
|
||||
, ImGuiDir
|
||||
, pattern ImGuiDirLeft
|
||||
, pattern ImGuiDirRight
|
||||
, pattern ImGuiDirUp
|
||||
, pattern ImGuiDirDown
|
||||
, ImVec3(..)
|
||||
, ImVec4(..)
|
||||
, module DearImGui.Enums
|
||||
, module DearImGui.Structs
|
||||
)
|
||||
where
|
||||
|
||||
@ -139,6 +134,9 @@ import Foreign.C
|
||||
|
||||
-- dear-imgui
|
||||
import DearImGui.Context
|
||||
( imguiContext )
|
||||
import DearImGui.Enums
|
||||
import DearImGui.Structs
|
||||
|
||||
-- inline-c
|
||||
import qualified Language.C.Inline as C
|
||||
@ -777,17 +775,6 @@ isItemHovered = liftIO do
|
||||
(0 /=) <$> [C.exp| bool { IsItemHovered() } |]
|
||||
|
||||
|
||||
-- | A cardinal direction.
|
||||
newtype ImGuiDir = ImGuiDir CInt
|
||||
|
||||
|
||||
pattern ImGuiDirLeft, ImGuiDirRight, ImGuiDirUp, ImGuiDirDown :: ImGuiDir
|
||||
pattern ImGuiDirLeft = ImGuiDir 0
|
||||
pattern ImGuiDirRight = ImGuiDir 1
|
||||
pattern ImGuiDirUp = ImGuiDir 2
|
||||
pattern ImGuiDirDown = ImGuiDir 3
|
||||
|
||||
|
||||
withCStringOrNull :: Maybe String -> (Ptr CChar -> IO a) -> IO a
|
||||
withCStringOrNull Nothing k = k nullPtr
|
||||
withCStringOrNull (Just s) k = withCString s k
|
||||
|
||||
@ -1,57 +1,27 @@
|
||||
{-# language DerivingStrategies #-}
|
||||
{-# language DuplicateRecordFields #-}
|
||||
{-# language GeneralizedNewtypeDeriving #-}
|
||||
{-# language NamedFieldPuns #-}
|
||||
{-# language OverloadedStrings #-}
|
||||
{-# language PatternSynonyms #-}
|
||||
{-# language TemplateHaskell #-}
|
||||
|
||||
module DearImGui.Context where
|
||||
|
||||
import Language.C.Types
|
||||
import Language.C.Inline.Context
|
||||
-- containers
|
||||
import qualified Data.Map.Strict as Map
|
||||
import Foreign
|
||||
|
||||
-- inline-c
|
||||
import Language.C.Inline.Context
|
||||
( Context(..) )
|
||||
import Language.C.Types
|
||||
( pattern TypeName )
|
||||
|
||||
data ImVec3 = ImVec3 { x, y, z :: {-# unpack #-} !Float }
|
||||
|
||||
|
||||
instance Storable ImVec3 where
|
||||
sizeOf ~ImVec3{x, y, z} = sizeOf x + sizeOf y + sizeOf z
|
||||
|
||||
alignment _ = 0
|
||||
|
||||
poke ptr ImVec3{ x, y, z } = do
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 0)) x
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 1)) y
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 2)) z
|
||||
|
||||
peek ptr = do
|
||||
x <- peek (castPtr ptr )
|
||||
y <- peek (castPtr ptr `plusPtr` (sizeOf x * 1))
|
||||
z <- peek (castPtr ptr `plusPtr` (sizeOf x * 2))
|
||||
return ImVec3{ x, y, z }
|
||||
|
||||
|
||||
data ImVec4 = ImVec4 { x, y, z, w :: {-# unpack #-} !Float }
|
||||
|
||||
|
||||
instance Storable ImVec4 where
|
||||
sizeOf ~ImVec4{x, y, z, w} = sizeOf x + sizeOf y + sizeOf z + sizeOf w
|
||||
|
||||
alignment _ = 0
|
||||
|
||||
poke ptr ImVec4{ x, y, z, w } = do
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 0)) x
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 1)) y
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 2)) z
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 3)) w
|
||||
|
||||
peek ptr = do
|
||||
x <- peek (castPtr ptr )
|
||||
y <- peek (castPtr ptr `plusPtr` (sizeOf x * 1))
|
||||
z <- peek (castPtr ptr `plusPtr` (sizeOf x * 2))
|
||||
w <- peek (castPtr ptr `plusPtr` (sizeOf x * 3))
|
||||
return ImVec4{ x, y, z, w }
|
||||
-- dear-imgui
|
||||
import DearImGui.Structs
|
||||
( ImVec3, ImVec4 )
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
imguiContext :: Context
|
||||
imguiContext = mempty
|
||||
|
||||
34
src/DearImGui/Enums.hs
Normal file
34
src/DearImGui/Enums.hs
Normal file
@ -0,0 +1,34 @@
|
||||
{-# LANGUAGE AllowAmbiguousTypes #-}
|
||||
{-# LANGUAGE DataKinds #-}
|
||||
{-# LANGUAGE DerivingStrategies #-}
|
||||
{-# LANGUAGE FlexibleContexts #-}
|
||||
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
|
||||
{-# LANGUAGE MagicHash #-}
|
||||
{-# LANGUAGE PatternSynonyms #-}
|
||||
{-# LANGUAGE ScopedTypeVariables #-}
|
||||
{-# LANGUAGE TemplateHaskell #-}
|
||||
{-# LANGUAGE TypeApplications #-}
|
||||
{-# LANGUAGE TypeFamilies #-}
|
||||
|
||||
module DearImGui.Enums where
|
||||
|
||||
-- base
|
||||
import GHC.Exts
|
||||
( proxy# )
|
||||
import GHC.TypeNats
|
||||
( Nat, KnownNat, natVal' )
|
||||
import Numeric.Natural
|
||||
( Natural )
|
||||
|
||||
-- dear-imgui-generator
|
||||
import DearImGui.Generator
|
||||
( declareEnumerations )
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
class KnownNat ( Count a ) => FiniteEnum a where
|
||||
type Count a :: Nat
|
||||
count :: Natural
|
||||
count = natVal' @( Count a ) proxy#
|
||||
|
||||
declareEnumerations ''FiniteEnum ''Count
|
||||
51
src/DearImGui/Structs.hs
Normal file
51
src/DearImGui/Structs.hs
Normal file
@ -0,0 +1,51 @@
|
||||
{-# LANGUAGE DuplicateRecordFields #-}
|
||||
{-# LANGUAGE NamedFieldPuns #-}
|
||||
|
||||
module DearImGui.Structs where
|
||||
|
||||
-- base
|
||||
import Foreign
|
||||
( Storable(..), castPtr, plusPtr )
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
data ImVec3 = ImVec3 { x, y, z :: {-# unpack #-} !Float }
|
||||
|
||||
|
||||
instance Storable ImVec3 where
|
||||
sizeOf ~ImVec3{x, y, z} = sizeOf x + sizeOf y + sizeOf z
|
||||
|
||||
alignment _ = 0
|
||||
|
||||
poke ptr ImVec3{ x, y, z } = do
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 0)) x
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 1)) y
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 2)) z
|
||||
|
||||
peek ptr = do
|
||||
x <- peek (castPtr ptr )
|
||||
y <- peek (castPtr ptr `plusPtr` (sizeOf x * 1))
|
||||
z <- peek (castPtr ptr `plusPtr` (sizeOf x * 2))
|
||||
return ImVec3{ x, y, z }
|
||||
|
||||
|
||||
data ImVec4 = ImVec4 { x, y, z, w :: {-# unpack #-} !Float }
|
||||
|
||||
|
||||
instance Storable ImVec4 where
|
||||
sizeOf ~ImVec4{x, y, z, w} = sizeOf x + sizeOf y + sizeOf z + sizeOf w
|
||||
|
||||
alignment _ = 0
|
||||
|
||||
poke ptr ImVec4{ x, y, z, w } = do
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 0)) x
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 1)) y
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 2)) z
|
||||
poke (castPtr ptr `plusPtr` (sizeOf x * 3)) w
|
||||
|
||||
peek ptr = do
|
||||
x <- peek (castPtr ptr )
|
||||
y <- peek (castPtr ptr `plusPtr` (sizeOf x * 1))
|
||||
z <- peek (castPtr ptr `plusPtr` (sizeOf x * 2))
|
||||
w <- peek (castPtr ptr `plusPtr` (sizeOf x * 3))
|
||||
return ImVec4{ x, y, z, w }
|
||||
Loading…
Reference in New Issue
Block a user