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## org.apache.xalan.xsltc.compiler.util
Class RealType

    java.lang.Object
      org.apache.xalan.xsltc.compiler.util.Type
          org.apache.xalan.xsltc.compiler.util.NumberType
              org.apache.xalan.xsltc.compiler.util.RealType

All Implemented Interfaces:
  Constants, org.apache.bcel.generic.InstructionConstants

public final class RealType
extends NumberType

Author:
  Jacek Ambroziak, Santiago Pericas-Geertsen

Nested Class Summary

Nested classes inherited from class org.apache.bcel.generic.InstructionConstants
`org.apache.bcel.generic.InstructionConstants.Clinit`

Field Summary

Fields inherited from class org.apache.xalan.xsltc.compiler.util.Type
`Attribute, Boolean, Comment, Element, Int, Node, NodeSet, Object, ObjectString, Processing_Instruction, Real, Reference, ResultTree, Root, String, Text, Void`

Fields inherited from interface org.apache.xalan.xsltc.compiler.Constants
`ABSOLUTE_ITERATOR, ACC_FINAL, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_SUPER, ADD_ATTRIBUTE, ADD_ATTRIBUTE_SIG, ADD_ITERATOR, ADD_ITERATOR_SIG, ADD_PARAMETER, ADD_PARAMETER_SIG, APPLY_TEMPLATES, ATTR_SET_SIG, ATTRIBUTE_LIST_FIELD, ATTRIBUTE_LIST_IMPL_CLASS, ATTRIBUTE_LIST_IMPL_SIG, ATTRIBUTES_SIG, BASIS_LIBRARY_CLASS, BOOLEAN_CLASS, BOOLEAN_VALUE, BOOLEAN_VALUE_SIG, CACHED_NODE_LIST_ITERATOR_CLASS, CALL_FUNCTION_CLASS, CHARACTERS, CHARACTERS_SIG, CHARACTERSW, CHARACTERSW_SIG, CLEAR_ATTRIBUTES, CLEAR_ATTRIBUTES_SIG, COLLATOR_CLASS, COLLATOR_SIG, COMPILER_PACKAGE, CURRENT_NODE_LIST_FILTER, CURRENT_NODE_LIST_FILTER_SIG, CURRENT_NODE_LIST_ITERATOR, CURRENT_NODE_LIST_ITERATOR_SIG, DEFAULT_NODE_COUNTER, DEFAULT_NODE_COUNTER_SIG, DOCUMENT_PNAME, DOM_ADAPTER_CLASS, DOM_ADAPTER_SIG, DOM_FIELD, DOM_IMPL, DOM_IMPL_CLASS, DOM_IMPL_SIG, DOM_INTF, DOM_INTF_SIG, DOM_PNAME, DOUBLE_CLASS, DOUBLE_SIG, DOUBLE_VALUE, DOUBLE_VALUE_SIG, DUP_FILTERED_ITERATOR, EMPTYATTR_FIELD, EMPTYSTRING, ERROR, FALLBACK_CLASS, FATAL, FILTER_INTERFACE, FILTER_INTERFACE_SIG, FILTER_ITERATOR, FILTER_STEP_ITERATOR, FORMAT_SYMBOLS_FIELD, GET_ATTRIBUTE_VALUE, GET_ATTRIBUTE_VALUE_SIG, GET_CHILDREN, GET_CHILDREN_SIG, GET_ELEMENT_VALUE, GET_ELEMENT_VALUE_SIG, GET_ITERATOR_SIG, GET_NODE_NAME, GET_NODE_NAME_SIG, GET_NODE_TYPE, GET_NODE_TYPE_SIG, GET_NODE_VALUE, GET_NODE_VALUE_ITERATOR, GET_NODE_VALUE_ITERATOR_SIG, GET_NODE_VALUE_SIG, GET_PARAMETER, GET_PARAMETER_SIG, GET_PARENT, GET_PARENT_SIG, GET_TYPED_CHILDREN, GET_TYPED_CHILDREN_SIG, GET_UNPARSED_ENTITY_URI, GET_UNPARSED_ENTITY_URI_SIG, HAS_ATTRIBUTE, HAS_ATTRIBUTE_SIG, HASIDCALL_INDEX, HASIDCALL_INDEX_SIG, INT_VALUE, INT_VALUE_SIG, INTEGER_CLASS, INTEGER_SIG, INTERNAL, INVOKE_METHOD, ITERATOR_FIELD_SIG, ITERATOR_PNAME, KEY_INDEX_CLASS, KEY_INDEX_SIG, LAST_INDEX, LOAD_DOCUMENT_CLASS, LOCALE_CLASS, LOCALE_SIG, MAKE_NODE, MAKE_NODE_LIST, MAKE_NODE_LIST_SIG, MAKE_NODE_LIST_SIG2, MAKE_NODE_SIG, MAKE_NODE_SIG2, MATCHING_ITERATOR, MATH_CLASS, MULTI_DOM_CLASS, MULTI_DOM_SIG, NAMES_INDEX, NAMES_INDEX_SIG, NAMESPACE_FEATURE, NAMESPACE_INDEX, NAMESPACE_INDEX_SIG, NEXT, NEXT_SIG, NEXTID, NODE, NODE_COUNTER, NODE_COUNTER_SIG, NODE_FIELD, NODE_FIELD_SIG, NODE_ITERATOR, NODE_ITERATOR_BASE, NODE_ITERATOR_SIG, NODE_PNAME, NODE_SIG, NODE_SORT_FACTORY, NODE_SORT_FACTORY_SIG, NODE_SORT_RECORD, NODE_SORT_RECORD_SIG, NTH_ITERATOR_CLASS, OBJECT_CLASS, OBJECT_SIG, ORDER_ITERATOR, ORDER_ITERATOR_SIG, OUTPUT_BASE, OUTPUT_HANDLER, OUTPUT_HANDLER_SIG, POP_PARAM_FRAME, POP_PARAM_FRAME_SIG, POSITION_INDEX, PUSH_PARAM_FRAME, PUSH_PARAM_FRAME_SIG, REDIRECT_URI, RESET, RESET_SIG, RTF_INITIAL_SIZE, RUNTIME_NODE_CLASS, RUNTIME_PACKAGE, SAX_IMPL, SAX_IMPL_CLASS, SAX_IMPL_SIG, SET_START_NODE, SET_START_NODE_SIG, SINGLETON_ITERATOR, SORT_ITERATOR, SORT_ITERATOR_SIG, STATIC_CHAR_DATA_FIELD, STATIC_CHAR_DATA_FIELD_SIG, STATIC_NAMES_ARRAY_FIELD, STATIC_NAMESPACE_ARRAY_FIELD, STATIC_TYPES_ARRAY_FIELD, STATIC_URIS_ARRAY_FIELD, STEP_ITERATOR_CLASS, STREAM_XML_OUTPUT, STRING, STRING_BUFFER_CLASS, STRING_BUFFER_SIG, STRING_CLASS, STRING_SIG, STRING_TO_INT, STRING_TO_INT_SIG, STRING_TO_REAL, STRING_TO_REAL_SIG, STRING_VALUE_HANDLER, STRING_VALUE_HANDLER_SIG, STRING_WRITER, STRIP_SPACE, STRIP_SPACE_INTF, STRIP_SPACE_PARAMS, STRIP_SPACE_SIG, TRANSLET_CLASS, TRANSLET_FIELD, TRANSLET_FIELD_SIG, TRANSLET_INTF, TRANSLET_INTF_SIG, TRANSLET_OUTPUT_BASE, TRANSLET_OUTPUT_INTERFACE, TRANSLET_OUTPUT_PNAME, TRANSLET_OUTPUT_SIG, TRANSLET_PNAME, TRANSLET_SIG, TRANSLET_URI, TRANSLET_VERSION_INDEX, TRANSLET_VERSION_INDEX_SIG, TYPES_INDEX, TYPES_INDEX_SIG, UNION_ITERATOR_CLASS, UNION_ITERATOR_SIG, UNSUPPORTED, URIS_INDEX, URIS_INDEX_SIG, WARNING, WRITER_SIG, XHTML_URI, XMLNS_PREFIX, XMLNS_STRING, XMLNS_URI, XSLT_PACKAGE, XSLT_URI`

Fields inherited from interface org.apache.bcel.generic.InstructionConstants
`AALOAD, AASTORE, ACONST_NULL, ALOAD_0, ALOAD_1, ALOAD_2, ARETURN, ARRAYLENGTH, ASTORE_0, ASTORE_1, ASTORE_2, ATHROW, BALOAD, BASTORE, bla, CALOAD, CASTORE, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DMUL, DNEG, DREM, DRETURN, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FMUL, FNEG, FREM, FRETURN, FSUB, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, ILOAD_0, ILOAD_1, ILOAD_2, IMUL, INEG, INSTRUCTIONS, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE_0, ISTORE_1, ISTORE_2, ISUB, IUSHR, IXOR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDIV, LMUL, LNEG, LOR, LREM, LRETURN, LSHL, LSHR, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, NOP, POP, POP2, RETURN, SALOAD, SASTORE, SWAP, THIS`

Method Summary
`org.apache.bcel.generic.Instruction` | `ADD()`
`org.apache.bcel.generic.Instruction` | `CMP(boolean less)`
`int` | `distanceTo(Type type)` Returns the distance between two types.
`org.apache.bcel.generic.Instruction` | `DIV()`
`org.apache.bcel.generic.Instruction` | `DUP()`
`boolean` | `identicalTo(Type other)` Returns true if this and other are identical types.
`org.apache.bcel.generic.Instruction` | `LOAD(int slot)`
`org.apache.bcel.generic.Instruction` | `MUL()`
`org.apache.bcel.generic.Instruction` | `NEG()`
`org.apache.bcel.generic.Instruction` | `POP()`
`org.apache.bcel.generic.Instruction` | `REM()`
`org.apache.bcel.generic.Instruction` | `STORE(int slot)`
`org.apache.bcel.generic.Instruction` | `SUB()`
`org.apache.bcel.generic.Type` | `toJCType()`
`java.lang.String` | `toSignature()` Returns the signature of an internal type's external representation.
`java.lang.String` | `toString()` Returns a string representation of this type.
`void` | `translateBox(ClassGenerator classGen, MethodGenerator methodGen)` Translates an object of this type to its boxed representation.
`void` | `translateFrom(ClassGenerator classGen, MethodGenerator methodGen, java.lang.Class clazz)` Translates an external (primitive) Java type into a real.
`void` | `translateTo(ClassGenerator classGen, MethodGenerator methodGen, BooleanType type)` Expects a real on the stack and pushes a 0 if that number is 0.0 and a 1 otherwise.
`void` | `translateTo(ClassGenerator classGen, MethodGenerator methodGen, java.lang.Class clazz)` Translates a real into the Java type denoted by `clazz`.
`void` | `translateTo(ClassGenerator classGen, MethodGenerator methodGen, IntType type)` Expects a real on the stack and pushes a truncated integer value
`void` | `translateTo(ClassGenerator classGen, MethodGenerator methodGen, ReferenceType type)` Expects a double on the stack and pushes a boxed double.
`void` | `translateTo(ClassGenerator classGen, MethodGenerator methodGen, StringType type)` Expects a real on the stack and pushes its string value by calling `Double.toString(double d)`.
`void` | `translateTo(ClassGenerator classGen, MethodGenerator methodGen, Type type)` Translates a real into an object of internal type `type`.
`FlowList` | `translateToDesynthesized(ClassGenerator classGen, MethodGenerator methodGen, BooleanType type)` Translates a real into a non-synthesized boolean.
`void` | `translateUnBox(ClassGenerator classGen, MethodGenerator methodGen)` Translates an object of this type to its unboxed representation.

Methods inherited from class org.apache.xalan.xsltc.compiler.util.NumberType
`isNumber, isSimple`

Methods inherited from class org.apache.xalan.xsltc.compiler.util.Type
`GE, getClassName, GT, implementedAsMethod, LE, LT, newObjectType, newObjectType, translateToDesynthesized`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Method Detail

### toString

    public java.lang.String toString()

  Description copied from class: `Type`
  Returns a string representation of this type.

  Specified by:
    `toString` in class `Type`

### identicalTo

    public boolean identicalTo(Type other)

  Description copied from class: `Type`
  Returns true if this and other are identical types.

  Specified by:
    `identicalTo` in class `Type`

### toSignature

    public java.lang.String toSignature()

  Description copied from class: `Type`
  Returns the signature of an internal type's external representation.

  Specified by:
    `toSignature` in class `Type`

### toJCType

    public org.apache.bcel.generic.Type toJCType()

  Specified by:
    `toJCType` in class `Type`

### distanceTo

    public int distanceTo(Type type)

  Description copied from class: `Type`
  Returns the distance between two types. This measure is used to select overloaded functions/operators. This method is typically redefined by the subclasses.

  Overrides:
    `distanceTo` in class `Type`
  See Also:
    `Type.distanceTo(org.apache.xalan.xsltc.compiler.util.Type)`

### translateTo

    public void translateTo(ClassGenerator classGen,
                            MethodGenerator methodGen,
                            Type type)

  Translates a real into an object of internal type `type`. The translation to int is undefined since reals are never converted to ints.

  Overrides:
    `translateTo` in class `Type`
  See Also:
    `Type.translateTo(org.apache.xalan.xsltc.compiler.util.ClassGenerator, org.apache.xalan.xsltc.compiler.util.MethodGenerator, org.apache.xalan.xsltc.compiler.util.Type)`

### translateTo

    public void translateTo(ClassGenerator classGen,
                            MethodGenerator methodGen,
                            StringType type)

  Expects a real on the stack and pushes its string value by calling `Double.toString(double d)`.

  See Also:
    `Type.translateTo(org.apache.xalan.xsltc.compiler.util.ClassGenerator, org.apache.xalan.xsltc.compiler.util.MethodGenerator, org.apache.xalan.xsltc.compiler.util.Type)`

### translateTo

    public void translateTo(ClassGenerator classGen,
                            MethodGenerator methodGen,
                            BooleanType type)

  Expects a real on the stack and pushes a 0 if that number is 0.0 and a 1 otherwise.

  See Also:
    `Type.translateTo(org.apache.xalan.xsltc.compiler.util.ClassGenerator, org.apache.xalan.xsltc.compiler.util.MethodGenerator, org.apache.xalan.xsltc.compiler.util.Type)`

### translateTo

    public void translateTo(ClassGenerator classGen,
                            MethodGenerator methodGen,
                            IntType type)

  Expects a real on the stack and pushes a truncated integer value

  See Also:
    `Type.translateTo(org.apache.xalan.xsltc.compiler.util.ClassGenerator, org.apache.xalan.xsltc.compiler.util.MethodGenerator, org.apache.xalan.xsltc.compiler.util.Type)`

### translateToDesynthesized

    public FlowList translateToDesynthesized(ClassGenerator classGen,
                                             MethodGenerator methodGen,
                                             BooleanType type)

  Translates a real into a non-synthesized boolean. It does not push a 0 or a 1 but instead returns branchhandle list to be appended to the false list. A NaN must be converted to "false".

  Overrides:
    `translateToDesynthesized` in class `Type`
  See Also:
    `Type.translateToDesynthesized(org.apache.xalan.xsltc.compiler.util.ClassGenerator, org.apache.xalan.xsltc.compiler.util.MethodGenerator, org.apache.xalan.xsltc.compiler.util.Type)`

### translateTo

    public void translateTo(ClassGenerator classGen,
                            MethodGenerator methodGen,
                            ReferenceType type)

  Expects a double on the stack and pushes a boxed double. Boxed double are represented by an instance of `java.lang.Double`.

  See Also:
    `Type.translateTo(org.apache.xalan.xsltc.compiler.util.ClassGenerator, org.apache.xalan.xsltc.compiler.util.MethodGenerator, org.apache.xalan.xsltc.compiler.util.Type)`

### translateTo

    public void translateTo(ClassGenerator classGen,
                            MethodGenerator methodGen,
                            java.lang.Class clazz)

  Translates a real into the Java type denoted by `clazz`. Expects a real on the stack and pushes a number of the appropriate type after coercion.

  Overrides:
    `translateTo` in class `Type`

### translateFrom

    public void translateFrom(ClassGenerator classGen,
                              MethodGenerator methodGen,
                              java.lang.Class clazz)

  Translates an external (primitive) Java type into a real. Expects a java object on the stack and pushes a real (i.e., a double).

  Overrides:
    `translateFrom` in class `Type`

### translateBox

    public void translateBox(ClassGenerator classGen,
                             MethodGenerator methodGen)

  Translates an object of this type to its boxed representation.

  Overrides:
    `translateBox` in class `Type`

### translateUnBox

    public void translateUnBox(ClassGenerator classGen,
                               MethodGenerator methodGen)

  Translates an object of this type to its unboxed representation.

  Overrides:
    `translateUnBox` in class `Type`

### ADD

    public org.apache.bcel.generic.Instruction ADD()

  Overrides:
    `ADD` in class `Type`

### SUB

    public org.apache.bcel.generic.Instruction SUB()

  Overrides:
    `SUB` in class `Type`

### MUL

    public org.apache.bcel.generic.Instruction MUL()

  Overrides:
    `MUL` in class `Type`

### DIV

    public org.apache.bcel.generic.Instruction DIV()

  Overrides:
    `DIV` in class `Type`

### REM

    public org.apache.bcel.generic.Instruction REM()

  Overrides:
    `REM` in class `Type`

### NEG

    public org.apache.bcel.generic.Instruction NEG()

  Overrides:
    `NEG` in class `Type`

### LOAD

    public org.apache.bcel.generic.Instruction LOAD(int slot)

  Overrides:
    `LOAD` in class `Type`

### STORE

    public org.apache.bcel.generic.Instruction STORE(int slot)

  Overrides:
    `STORE` in class `Type`

### POP

    public org.apache.bcel.generic.Instruction POP()

  Overrides:
    `POP` in class `Type`

### CMP

    public org.apache.bcel.generic.Instruction CMP(boolean less)

  Overrides:
    `CMP` in class `Type`

### DUP

    public org.apache.bcel.generic.Instruction DUP()

  Overrides:
    `DUP` in class `Type`

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