Package gw.lang.parser

Interface ICoercionManager

    • Method Detail

      • canCoerce

        boolean canCoerce​(IType lhsType,
                  IType rhsType)
        Parameters:
        lhsType - type to be coerced to
        rhsType - type to be coerced from
        Returns:
        true if a coercion exists from rhsType to lhsType, false otherwise

      • convertValue

        java.lang.Object convertValue​(java.lang.Object value,
                              IType intrType)
        Parameters:
        intrType - type to coerce to
        value - the value to coerce (may not be null)
        Returns:
        the converted value

      • notCoercibleOrRequiresExplicitCoercion

        boolean notCoercibleOrRequiresExplicitCoercion​(IType lhsType,
                                               IType rhsType)

      • verifyTypesComparable

        IType verifyTypesComparable​(IType lhsType,
                            IType rhsType,
                            boolean bBiDirectional)
                     throws ParseIssue
        Verifies that the right hand type can be converted or coerced to the left hand type. If bBiDirectional is true, it will verify that either converts to another
        Throws:
        ParseIssue

      • verifyTypesComparable

        IType verifyTypesComparable​(IType lhsType,
                            IType rhsType,
                            boolean bBiDirectional,
                            IFullParserState parserState)
                     throws ParseIssue
        Verifies that the right hand type can be converted or coerced to the left hand type. If bBiDirectional is true, it will verify that either converts to another. The parser state will be used to report parse errors with.
        Throws:
        ParseIssue

      • convertNullAsPrimitive

        java.lang.Object convertNullAsPrimitive​(IType intrType,
                                        boolean isForBoxing)
        Converts a null value to a value compatible with the specified primitive type.
        Parameters:
        intrType - The primitive type to convert to.
        Returns:
        A wrapped primitive value corresponding to null.

      • resolveCoercerStatically

        ICoercer resolveCoercerStatically​(IType lhsType,
                                  IType rhsType)
        Determine and return a statically valid coercer from the rhsType to the lhsType. Returns null if no coercion is necessary.
        Parameters:
        lhsType - the type to coerce to
        rhsType - the type to coerce from

      • isPrimitiveOrBoxed

        boolean isPrimitiveOrBoxed​(IType type)
        Determine whether the specified type is either a primitive or a boxed primitive.
        Parameters:
        type - the type to examine
        Returns:
        true if the specified type is a primitive or a boxed primitive

      • makePrimitiveBooleanFrom

        boolean makePrimitiveBooleanFrom​(java.lang.Object obj)
        Returns:
        A Boolean for an arbitrary object.

      • makeBooleanFrom

        java.lang.Boolean makeBooleanFrom​(java.lang.Object obj)

      • makePrimitiveIntegerFrom

        int makePrimitiveIntegerFrom​(java.lang.Object obj)

      • makeIntegerFrom

        java.lang.Integer makeIntegerFrom​(java.lang.Object obj)

      • makePrimitiveLongFrom

        long makePrimitiveLongFrom​(java.lang.Object obj)

      • makeLongFrom

        java.lang.Long makeLongFrom​(java.lang.Object obj)

      • makePrimitiveFloatFrom

        float makePrimitiveFloatFrom​(java.lang.Object obj)

      • makeFloatFrom

        java.lang.Float makeFloatFrom​(java.lang.Object obj)

      • makePrimitiveDoubleFrom

        double makePrimitiveDoubleFrom​(java.lang.Object obj)

      • makeDoubleFrom

        java.lang.Double makeDoubleFrom​(java.lang.Object obj)
        Returns a Double for an arbitrary object. Uses a semi-intelligent algorithm to create an appropriate Double instance. If the Object argument is a: 
         null value - an appropriate value respecting this parsed element's nullAsZero
   setting e.g., either null or an 'empty' value.
 Double - returns the argument as is.
 Number - the Number's doubleValue().
 String - Double.parseDouble( String )
 Boolean - a pooled instance of either Double( 0 ) or Double( 1 )
 Date - A Double for Date.getTime().
 default - A parsed Double for the Object argument's toString() method.
        Returns:
        A Double for an arbitrary object (may return a pooled instance).

      • makeBigDecimalFrom

        java.math.BigDecimal makeBigDecimalFrom​(java.lang.Object obj)

      • makeBigIntegerFrom

        java.math.BigInteger makeBigIntegerFrom​(java.lang.Object obj)

      • makeRationalFrom

        Rational makeRationalFrom​(java.lang.Object obj)

      • makeStringFrom

        java.lang.String makeStringFrom​(java.lang.Object obj)

      • makeDateFrom

        java.util.Date makeDateFrom​(java.lang.Object obj)
        Returns a new Date instance representing the object.

      • parseDateTime

        java.util.Date parseDateTime​(java.lang.String str)
                      throws java.text.ParseException
        Produce a date from a string using standard DateFormat parsing.
        Throws:
        java.text.ParseException

      • isDateTime

        boolean isDateTime​(java.lang.String str)
            throws java.text.ParseException
        Throws:
        java.text.ParseException

      • formatDate

        java.lang.String formatDate​(java.util.Date value,
                            java.lang.String strFormat)

      • formatTime

        java.lang.String formatTime​(java.util.Date value,
                            java.lang.String strFormat)

      • formatNumber

        java.lang.String formatNumber​(java.lang.Double value,
                              java.lang.String strFormat)

      • parseNumber

        java.lang.Number parseNumber​(java.lang.String strValue)