Prepare for release of 0.3.9.0

CHANGELOG.md

@@ -5,7 +5,13 @@ Note: Prior to version 0.3.4.0, this library was named
 `small-bytearray-builder` is now just a compatibility shim
 to ease the migration process.
 
-## 0.3.8.0 -- 2020-??-??
+## 0.3.9.0 -- 2021-11-19
+
+* Add `cstring#`
+* Add `ToBuilder` and `ToBoundedBuilder` classes
+* Add quasiquoter named `bldr` in `Data.Bytes.Builder.Template`.
+
+## 0.3.8.0 -- 2021-06-25
 
 * Fix `doubleDec`, which was encoding small numbers incorrectly.
 * Add `runByteString` for producing `ByteString` from bounded builders.

bytebuild.cabal

@@ -47,7 +47,7 @@ library
     Data.Bytes.Chunks
   build-depends:
     , base >=4.12.0.0 && <5
-    , byteslice >=0.2.5 && <0.3
+    , byteslice >=0.2.6 && <0.3
     , bytestring >=0.10.8.2 && <0.11
     , haskell-src-meta >=0.8
     , integer-logarithms >=1.0.3 && <1.1

common/Word16Tree.hs

@@ -13,6 +13,7 @@ import Data.Bytes.Builder as B
 import Data.Word (Word16)
 import Data.Primitive (ByteArray)
 import qualified Data.Bytes as Bytes
+import qualified Data.Bytes.Text.Ascii
 
 data Word16Tree
   = Branch !Word16Tree !Word16Tree
@@ -32,7 +33,7 @@ encode (Branch a b) =
   B.ascii ')'
 
 expectedSmall :: ByteArray
-expectedSmall = Bytes.toByteArray $ Bytes.fromAsciiString
+expectedSmall = Bytes.toByteArray $ Data.Bytes.Text.Ascii.fromString
   "((AB59,(1F33,2E71)),((((FA9A,247B),890C),(0F13,((55BF,7CF1),389B))),1205))"
 
 

src/Data/Bytes/Builder/Template.hs

@@ -2,8 +2,9 @@
 {-# LANGUAGE QuasiQuotes #-}
 {-# LANGUAGE TemplateHaskell #-}
 
+-- | Quasiquotation for byte builders.
 module Data.Bytes.Builder.Template
-  ( templ
+  ( bldr
   ) where
 
 import Control.Monad (when)
@@ -19,9 +20,31 @@ import qualified Data.ByteString.Short as SBS
 import qualified Data.Text.Short as TS
 import qualified Language.Haskell.TH as TH
 
-
+-- | A quasiquoter for builders. Haskell expressions are interpolated
-templ :: QuasiQuoter
+-- with backticks, and the @ToBuilder@ class is used to convert them
-templ = QuasiQuoter
+-- to builders. Several common escape sequences for whitespace and
+-- control characters are recongized. Consider the following expression,
+-- where the binding @partition@ has type @Word32@:
+--
+-- > [templ|[WARN] Partition `partition` has invalid data.\n|]
+--
+-- This expression has type @Builder@ and expands to:
+--
+-- > Builder.cstringLen (Ptr "[WARN] Partition "#, 17) <>
+-- > Builder.toBuilder partition <>
+-- > Builder.cstringLen (Ptr " has invalid data.\n"#, 19)
+--
+-- The @ToBuilder@ instance for @Word32@ uses decimal encoding, so this
+-- would result in the following if @partition@ was 42 (with a newline
+-- character at the end):
+--
+-- > [WARN] Partition 42 has invalid data.
+--
+-- In the future, a more sophisticated @bbldr@ variant will be added
+-- that will support expressions where the maximum length of the entire
+-- builder can be computed at compile time. 
+bldr :: QuasiQuoter
+bldr = QuasiQuoter
   { quoteExp = templExp
   , quotePat = notHandled "patterns"
   , quoteType = notHandled "types"

test/Main.hs

@@ -12,7 +12,7 @@ import Prelude hiding (replicate)
 import Control.Applicative (liftA2)
 import Control.Monad.ST (runST)
 import Data.Bytes.Builder
-import Data.Bytes.Builder.Template (templ)
+import Data.Bytes.Builder.Template (bldr)
 import Data.Bytes.Types (MutableBytes(MutableBytes))
 import Data.Char (ord,chr)
 import Data.IORef (IORef,newIORef,readIORef,writeIORef)
@@ -35,6 +35,8 @@ import qualified Data.Bytes as Bytes
 import qualified Data.Bytes.Builder as Builder
 import qualified Data.Bytes.Builder.Bounded as Bounded
 import qualified Data.Bytes.Chunks as Chunks
+import qualified Data.Bytes.Text.Ascii as Ascii
+import qualified Data.Bytes.Text.Latin1 as Latin1
 import qualified Data.ByteString as ByteString
 import qualified Data.ByteString.Builder as BB
 import qualified Data.ByteString.Lazy.Char8 as LB
@@ -294,24 +296,24 @@ tests = testGroup "Tests"
   , testGroup "bytes templates"
     [ THU.testCase "A" $ do
         let name = Just ("foo" :: ShortText)
-            msgBuilder = [templ|Hello `fromMaybe "World" name`!\n|]
+            msgBuilder = [bldr|Hello `fromMaybe "World" name`!\n|]
             msg = Chunks.concat . Builder.run 200 $ msgBuilder
-         in Bytes.fromAsciiString "Hello foo!\n" @=? msg
+         in Ascii.fromString "Hello foo!\n" @=? msg
     , THU.testCase "B" $ do
         let one = "foo" :: ShortText
             two = "bar" :: String
-            msgBuilder = [templ|`one``two`|]
+            msgBuilder = [bldr|`one``two`|]
             msg = Chunks.concat . Builder.run 200 $ msgBuilder
-         in Bytes.fromAsciiString "foobar" @=? msg
+         in Ascii.fromString "foobar" @=? msg
     , THU.testCase "C" $ do
-        let msgBuilder = [templ|a backtick for you: \`|]
+        let msgBuilder = [bldr|a backtick for you: \`|]
             msg = Chunks.concat . Builder.run 200 $ msgBuilder
-         in Bytes.fromAsciiString "a backtick for you: `" @=? msg
+         in Ascii.fromString "a backtick for you: `" @=? msg
     , THU.testCase "D" $ do
         let i = 137 :: Int
-            msgBuilder = [templ|there are `i` lights!|]
+            msgBuilder = [bldr|there are `i` lights!|]
             msg = Chunks.concat . Builder.run 200 $ msgBuilder
-         in Bytes.fromAsciiString "there are 137 lights!" @=? msg
+         in Ascii.fromString "there are 137 lights!" @=? msg
     ]
   ]
 
@@ -362,7 +364,7 @@ newtype AsciiByteArray = AsciiByteArray ByteArray
 
 instance Show AsciiByteArray where
   show (AsciiByteArray b) = if Bytes.all (\w -> w >= 32 && w < 127) (Bytes.fromByteArray b)
-    then Bytes.toLatinString (Bytes.fromByteArray b)
+    then Latin1.toString (Bytes.fromByteArray b)
     else show (show b)
 
 instance Arbitrary Word128 where