Text.Shakespeare

NOTE: This module should be considered internal, and will be hidden in future releases.

Documentation

data ShakespeareSettings

Constructors

ShakespeareSettings

Fields

varChar :: Char

urlChar :: Char

intChar :: Char

toBuilder :: Exp

wrap :: Exp

unwrap :: Exp

justVarInterpolation :: Bool

preConversion :: Maybe PreConvert

modifyFinalValue :: Maybe Exp

A transformation applied to the final expression. Most often, this would be used to force the type of the expression to help make more meaningful error messages.

Instances

Lift ShakespeareSettings

data PreConvert

Coffeescript, TypeScript, and other languages compiles down to Javascript. Previously we waited until the very end, at the rendering stage to perform this compilation. Lets call is a post-conversion This had the advantage that all Haskell values were inserted first: for example a value could be inserted that Coffeescript would compile into Javascript. While that is perhaps a safer approach, the advantage is not used in practice: it was that way mainly for ease of implementation. The down-side is the template must be compiled down to Javascript during every request. If instead we do a pre-conversion to compile down to Javascript, we only need to perform the compilation once.

The problem then is the insertion of Haskell values: we need a hole for them. This can be done with variables known to the language. During the pre-conversion we first modify all Haskell insertions So #{a} is change to shakespeare_var_a Then we can place the Haskell values in a function wrapper that exposes those variables: (function(shakespeare_var_a){ ... shakespeare_var_a ...}) TypeScript can compile that, and then we tack an application of the Haskell values onto the result: (#{a})

preEscapeIgnoreBalanced is used to not insert backtacks for variable already inside strings or backticks. coffeescript will happily ignore the interpolations, and backticks would not be treated as escaping in that context. preEscapeIgnoreLine was added to ignore comments (which in Coffeescript begin with a '#')

Constructors

PreConvert

Fields

preConvert :: PreConversion

preEscapeIgnoreBalanced :: [Char]

preEscapeIgnoreLine :: [Char]

wrapInsertion :: Maybe WrapInsertion

Instances

Lift PreConvert

data WrapInsertion

Constructors

WrapInsertion

Fields

wrapInsertionIndent :: Maybe String

wrapInsertionStartBegin :: String

wrapInsertionSeparator :: String

wrapInsertionStartClose :: String

wrapInsertionEnd :: String

wrapInsertionAddParens :: Bool

Instances

Lift WrapInsertion

data PreConversion

Constructors

ReadProcess String [String]

Id

Instances

Lift PreConversion

defaultShakespeareSettings :: ShakespeareSettings

shakespeare :: ShakespeareSettings -> QuasiQuoter

shakespeareFile :: ShakespeareSettings -> FilePath -> Q Exp

shakespeareFileReload :: ShakespeareSettings -> FilePath -> Q Exp

low-level

shakespeareFromString :: ShakespeareSettings -> String -> Q Exp

shakespeareUsedIdentifiers :: ShakespeareSettings -> String -> [(Deref, VarType)]

Determine which identifiers are used by the given template, useful for creating systems like yesod devel.

type RenderUrl url = url -> QueryParameters -> Text

data VarType

Constructors

VTPlain

VTUrl

VTUrlParam

VTMixin

Instances

Bounded VarType

Enum VarType

Eq VarType

Data VarType

Ord VarType

Show VarType

Generic VarType

type Rep VarType

data Deref

Instances

Eq Deref

Data Deref

Ord Deref

Read Deref

Show Deref

Lift Deref

type Parser = Parsec String [String]

A parser with a user state of [String]

preFilter

Arguments

:: Maybe FilePath

for error reporting

-> ShakespeareSettings

-> String

-> IO String

Internal

shakespeareRuntime :: ShakespeareSettings -> FilePath -> [(Deref, VarExp url)] -> Shakespeare url

pack' :: String -> Text