object StringConverter extends Converter[String]
MLValue.Converter for Strings.
- ML type:
string - Encoding of a string
sas an exception:E_String s
Note that there is an incompatibility between ML string and Scala String.
The former is restricted to characters with codepoints 0...255 (with no specified character set interpretation
for characters over 128)
and can be at most 67.108.856 characters long (String.maxSize in ML). The latter has 16-bit Unicode characters
and no length limit. This converter will work correctly for ASCII strings of the maximum ML-length,
but throw exceptions when storing longer strings, and replace non-ASCII characters in unspecified ways.
- Source
- StringConverter.scala
- See also
MLValue.Converter for explanations what Converters are for.
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- def exnToValue: String
Returns ML code for an (anonymous) function of type
exn -> athat converts a value encoded as an exception back into the original value.Returns ML code for an (anonymous) function of type
exn -> athat converts a value encoded as an exception back into the original value.It is recommended that this function produces informative match failures in case of invalid inputs. MLValue.matchFailExn is a helper function that facilitates this.
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Returns the ML type corresponding to
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defonly to make sure Scala does not include an extra field or perform an unnecessary computation in the class when this function is not used.)- Definition Classes
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- def retrieve(value: MLValue[String])(implicit isabelle: Isabelle, ec: ExecutionContext): Future[String]
Given an mlvalue.MLValue
value, retrieves and returns the value referenced byvaluein the Isabelle object store.Given an mlvalue.MLValue
value, retrieves and returns the value referenced byvaluein the Isabelle object store.Must not invoke
value.retrieve orvalue.retrieveNow because those functions invokethis.retrieve. (But calling retrieve or retrieveNow on other MLValues is allowed as long as no cyclic dependencies are created.)- Definition Classes
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- def store(value: String)(implicit isabelle: Isabelle, ec: ExecutionContext): MLValue[String]
Given a
value : A, transfers and storesvaluein the Isabelle object store and returns an mlvalue.MLValue referencing the value in the object store.Given a
value : A, transfers and storesvaluein the Isabelle object store and returns an mlvalue.MLValue referencing the value in the object store.Must not invoke MLValue
(value)because that functions invokesthis.store. (But calling MLValue(...)on other values is allowed as long as no cyclic dependencies are created.)- Definition Classes
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Returns ML code for an (anonymous) function of type
a -> exnthat converts a value into its encoding as an exception.Returns ML code for an (anonymous) function of type
a -> exnthat converts a value into its encoding as an exception.It is recommended that this function produces informative match failures in case of invalid inputs. MLValue.matchFailExn is a helper function that facilitates this.
This function should always return the same value. (It is declared as a
defonly to make sure Scala does not include an extra field or perform an unnecessary computation in the class when this function is not used.)- Definition Classes
- StringConverter → Converter
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