| Safe Haskell | None |
|---|
Text.DescriptorProtos.Options
Description
This module provides a less verbose API for accessing the options
of the various descriptor messages types. There are seven
different option types. The EnumValueOptions are not currently
settable in the proto file. To access extension keys the
descendKey functions are provided as the descend functions ignore
them. The toDP, toEP, toSP are type-specific descents that
are demonstrated in the the tests below. They are useful in that
they provide more information for the type-checker. The toFP,
toEVP, and toMP are fully type-specific descents but are
needed to make the tests below type-check, though they could have
been used in test4, test5', and test7.
import Text.DescriptorProtos.Options import Text.DescriptorProtos(fileDescriptorProto) test1 :: D.FileOptions test1 = options fileDescriptorProto test2 :: Maybe D.MessageOptions test2 = return fileDescriptorProto >>= descend "FieldDescriptorProto" >>= return . options test3 :: Maybe D.EnumOptions test3 = return fileDescriptorProto >>= toDP "FieldDescriptorProto" >>= descend "Type" >>= return . options test4 :: Maybe D.EnumValueOptions test4 = return fileDescriptorProto >>= toDP "FieldDescriptorProto" >>= toEP "Type" >>= descend "TYPE_DOUBLE" >>= return . options test5 :: Maybe D.FieldOptions test5 = return fileDescriptorProto >>= toDP "DescriptorProto" >>= toDP "ExtensionRange" >>= descend "start" >>= return . options test6 :: Maybe D.ServiceOptions test6 = return fileDescriptorProto >>= descend "ImaginaryService" >>= return . options test7 :: Maybe D.MethodOptions test7 = return fileDescriptorProto >>= toSP "ImaginaryService" >>= descend "ImaginaryMethod" >>= return . options
Documentation
descend :: DescendClass a c => String -> a -> Maybe cSource
descendKey :: DescendKey a => String -> a -> Maybe FieldDescriptorProtoSource
toDP :: DescendClass a DescriptorProto => String -> a -> Maybe DescriptorProtoSource
toEP :: DescendClass a EnumDescriptorProto => String -> a -> Maybe EnumDescriptorProtoSource
class NameAndOptions a opt | a -> opt, opt -> a whereSource
Instances
class DescendClass a c whereSource
Instances
class DescendKey a whereSource
Methods
descendKey' :: a -> Utf8 -> Maybe FieldDescriptorProtoSource
data FileDescriptorProto Source
Instances
data DescriptorProto Source
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data EnumDescriptorProto Source
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data EnumValueDescriptorProto Source
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data FieldDescriptorProto Source
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data ServiceDescriptorProto Source
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data MethodDescriptorProto Source
Instances
data EnumOptions Source
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data EnumValueOptions Source
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data FieldOptions Source
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data FileOptions Source
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data MessageOptions Source
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data MethodOptions Source
Instances
data ServiceOptions Source
Instances