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note description: "Description of a java entity (either a class or an instance of a class." legal: "See notice at end of class." status: "See notice at end of class." date: "$Date: 2009-02-24 14:44:31 -0900 (Tue, 24 Feb 2009) $" revision: "$Revision: 77298 $" deferred class interface JAVA_ENTITY feature -- Access generating_type: TYPE [detachable JAVA_ENTITY] -- Type of current object -- (type of which it is a direct instance) -- (from ANY) ensure -- from ANY generating_type_not_void: Result /= Void generator: STRING_8 -- Name of current object's generating class -- (base class of the type of which it is a direct instance) -- (from ANY) ensure -- from ANY generator_not_void: Result /= Void generator_not_empty: not Result.is_empty feature -- Comparison frozen deep_equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void -- or attached to isomorphic object structures? -- (from ANY) ensure -- from ANY instance_free: class shallow_implies_deep: standard_equal (a, b) implies Result both_or_none_void: (a = Void) implies (Result = (b = Void)) same_type: (Result and (a /= Void)) implies (b /= Void and then a.same_type (b)) symmetric: Result implies deep_equal (b, a) frozen equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void or attached -- to objects considered equal? -- (from ANY) ensure -- from ANY instance_free: class definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.is_equal (b)) frozen is_deep_equal alias "≡≡≡" (other: JAVA_ENTITY): BOOLEAN -- Are Current and other attached to isomorphic object structures? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY shallow_implies_deep: standard_is_equal (other) implies Result same_type: Result implies same_type (other) symmetric: Result implies other.is_deep_equal (Current) is_equal (other: JAVA_ENTITY): BOOLEAN -- Is other attached to an object considered -- equal to current object? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY symmetric: Result implies other ~ Current consistent: standard_is_equal (other) implies Result frozen standard_equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void or attached to -- field-by-field identical objects of the same type? -- Always uses default object comparison criterion. -- (from ANY) ensure -- from ANY instance_free: class definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.standard_is_equal (b)) frozen standard_is_equal alias "" (other: JAVA_ENTITY): BOOLEAN -- Is other attached to an object of the same type -- as current object, and field-by-field identical to it? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY same_type: Result implies same_type (other) symmetric: Result implies other.standard_is_equal (Current) feature -- Status report conforms_to (other: ANY): BOOLEAN -- Does type of current object conform to type -- of other (as per Eiffel: The Language, chapter 13)? -- (from ANY) require -- from ANY other_not_void: other /= Void same_type (other: ANY): BOOLEAN -- Is type of current object identical to type of other? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY definition: Result = (conforms_to (other) and other.conforms_to (Current)) feature -- Duplication copy (other: JAVA_ENTITY) -- Update current object using fields of object attached -- to other, so as to yield equal objects. -- (from ANY) require -- from ANY other_not_void: other /= Void type_identity: same_type (other) ensure -- from ANY is_equal: Current ~ other frozen deep_copy (other: JAVA_ENTITY) -- Effect equivalent to that of: -- copy (other . deep_twin) -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY deep_equal: deep_equal (Current, other) frozen deep_twin: JAVA_ENTITY -- New object structure recursively duplicated from Current. -- (from ANY) ensure -- from ANY deep_twin_not_void: Result /= Void deep_equal: deep_equal (Current, Result) frozen standard_copy (other: JAVA_ENTITY) -- Copy every field of other onto corresponding field -- of current object. -- (from ANY) require -- from ANY other_not_void: other /= Void type_identity: same_type (other) ensure -- from ANY is_standard_equal: standard_is_equal (other) frozen standard_twin: JAVA_ENTITY -- New object field-by-field identical to other. -- Always uses default copying semantics. -- (from ANY) ensure -- from ANY standard_twin_not_void: Result /= Void equal: standard_equal (Result, Current) frozen twin: JAVA_ENTITY -- New object equal to Current -- twin calls copy; to change copying/twinning semantics, redefine copy. -- (from ANY) ensure -- from ANY twin_not_void: Result /= Void is_equal: Result ~ Current feature -- Basic operations frozen default: detachable JAVA_ENTITY -- Default value of object's type -- (from ANY) frozen default_pointer: POINTER -- Default value of type POINTER -- (Avoid the need to write p.default for -- some p of type POINTER.) -- (from ANY) ensure -- from ANY instance_free: class default_rescue -- Process exception for routines with no Rescue clause. -- (Default: do nothing.) -- (from ANY) frozen do_nothing -- Execute a null action. -- (from ANY) ensure -- from ANY instance_free: class feature -- Access object's attributes boolean_attribute (fid: POINTER): BOOLEAN -- Access to a boolean attribute require fid_not_null: fid /= default_pointer byte_attribute (fid: POINTER): INTEGER_8 -- Access to a 'byte' attribute require fid_not_null: fid /= default_pointer char_attribute (fid: POINTER): CHARACTER_8 -- Access to a 'char' attribute require fid_not_null: fid /= default_pointer double_attribute (fid: POINTER): REAL_64 -- Access to a double attribute require fid_not_null: fid /= default_pointer float_attribute (fid: POINTER): REAL_32 -- Access to a 'float' attribute require fid_not_null: fid /= default_pointer integer_attribute (fid: POINTER): INTEGER_32 -- Access to an integer attribute require fid_not_null: fid /= default_pointer long_attribute (fid: POINTER): INTEGER_64 -- Access to a 'long' attribute require fid_not_null: fid /= default_pointer object_attribute (fid: POINTER): detachable JAVA_OBJECT -- Access to a java object attribute require fid_not_null: fid /= default_pointer short_attribute (fid: POINTER): INTEGER_16 -- Access to a 'short' attribute require fid_not_null: fid /= default_pointer string_attribute (fid: POINTER): detachable STRING_8 -- Access to a String attribute require fid_not_null: fid /= default_pointer feature -- Output Io: STD_FILES -- Handle to standard file setup -- (from ANY) ensure -- from ANY instance_free: class io_not_void: Result /= Void out: STRING_8 -- New string containing terse printable representation -- of current object -- (from ANY) ensure -- from ANY out_not_void: Result /= Void print (o: detachable ANY) -- Write terse external representation of o -- on standard output. -- (from ANY) ensure -- from ANY instance_free: class frozen tagged_out: STRING_8 -- New string containing terse printable representation -- of current object -- (from ANY) ensure -- from ANY tagged_out_not_void: Result /= Void feature -- Platform Operating_environment: OPERATING_ENVIRONMENT -- Objects available from the operating system -- (from ANY) ensure -- from ANY instance_free: class operating_environment_not_void: Result /= Void feature -- Reflection field_id (attribute_name: STRING_8; signature: STRING_8): POINTER -- Find field_id used for attribute_name with signature -- encoded by signature. require attribute_name_not_void: attribute_name /= Void attribute_name_not_empty: not attribute_name.is_empty signature_not_void: signature /= Void signature_not_empty: not signature.is_empty method_id (feature_name: STRING_8; signature: STRING_8): POINTER -- Find method_id for feature_name with signature -- encoded by signature require feature_name_not_void: feature_name /= Void feature_name_not_empty: not feature_name.is_empty signature_not_void: signature /= Void signature_not_empty: not signature.is_empty ensure method_exists: Result /= default_pointer feature -- Setting object's attribute set_boolean_attribute (fid: POINTER; value: BOOLEAN) -- Set a 'boolean' attribute to 'value' require fid_not_null: fid /= default_pointer ensure boolean_attribute_set: boolean_attribute (fid) = value set_byte_attribute (fid: POINTER; value: INTEGER_8) -- Set a 'byte' attribute to 'value' require fid_not_null: fid /= default_pointer ensure byte_attribute_set: byte_attribute (fid) = value set_char_attribute (fid: POINTER; value: CHARACTER_8) -- Set a 'char' attribute to 'value' require fid_not_null: fid /= default_pointer ensure char_attribute_set: char_attribute (fid) = value set_double_attribute (fid: POINTER; value: REAL_64) -- Set a 'double' attribute to 'value' require fid_not_null: fid /= default_pointer ensure double_attribute_set: double_attribute (fid) = value set_float_attribute (fid: POINTER; value: REAL_32) -- Set a 'float' attribute to 'value' require fid_not_null: fid /= default_pointer ensure float_attribute_set: float_attribute (fid) = value set_integer_attribute (fid: POINTER; value: INTEGER_32) -- Set an 'integer' attribute to 'value' require fid_not_null: fid /= default_pointer ensure integer_attribute_set: integer_attribute (fid) = value set_long_attribute (fid: POINTER; value: INTEGER_64) -- Set a 'short' attribute to 'value' require fid_not_null: fid /= default_pointer ensure long_attribute_set: long_attribute (fid) = value set_object_attribute (fid: POINTER; value: JAVA_OBJECT) -- Set a java object attribute to 'value' require fid_not_null: fid /= default_pointer value_not_void: value /= Void ensure object_attribute_set: object_attribute (fid) = value set_short_attribute (fid: POINTER; value: INTEGER_16) -- Set a 'short' attribute to 'value' require fid_not_null: fid /= default_pointer ensure short_attribute_set: short_attribute (fid) = value set_string_attribute (fid: POINTER; value: STRING_8) -- Set a 'String' attribute to 'value' require fid_not_null: fid /= default_pointer value_not_void: value /= Void ensure string_attribute_set: string_attribute (fid) ~ value feature -- call object's methods boolean_method (mid: POINTER; args: detachable JAVA_ARGS): BOOLEAN -- Call an instance function that returns a boolean require mid_not_null: mid /= default_pointer byte_method (mid: POINTER; args: detachable JAVA_ARGS): INTEGER_8 -- Call an instance function that return a byte -- ( 8-bit integer (signed)), in Eiffel return -- a INTEGER_8 require mid_not_null: mid /= default_pointer char_method (mid: POINTER; args: detachable JAVA_ARGS): CHARACTER_8 -- Call an instance function that returns a char require mid_not_null: mid /= default_pointer double_method (mid: POINTER; args: detachable JAVA_ARGS): REAL_64 -- Call an instance function that returns a DOUBLE. require mid_not_null: mid /= default_pointer float_method (mid: POINTER; args: detachable JAVA_ARGS): REAL_32 -- Call an instance function that returns a REAL. require mid_not_null: mid /= default_pointer integer_method (mid: POINTER; args: detachable JAVA_ARGS): INTEGER_32 -- Call an instance function that returns an INTEGER. require mid_not_null: mid /= default_pointer long_method (mid: POINTER; args: detachable JAVA_ARGS): INTEGER_64 -- Call an instance function that returns an Long. This -- function is not implemented. require mid_not_null: mid /= default_pointer object_method (mid: POINTER; args: detachable JAVA_ARGS): detachable JAVA_OBJECT -- Call an instance function that returns a java object require mid_not_null: mid /= default_pointer short_method (mid: POINTER; args: detachable JAVA_ARGS): INTEGER_16 -- Call an instance function that returns a Short (in -- Eiffel we still return an INTEGER). require mid_not_null: mid /= default_pointer string_method (mid: POINTER; args: detachable JAVA_ARGS): detachable STRING_8 -- Call an instance function that returns a STRING. require mid_not_null: mid /= default_pointer void_method (mid: POINTER; args: detachable JAVA_ARGS) -- Call a Java procedure with method_id "mid" and -- arguments "args. require mid_not_null: mid /= default_pointer invariant -- from ANY reflexive_equality: standard_is_equal (Current) reflexive_conformance: conforms_to (Current) note copyright: "Copyright (c) 1984-2009, Eiffel Software and others" license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)" source: "[ Eiffel Software 5949 Hollister Ave., Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end -- class JAVA_ENTITY
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