By S. Tucker Taft, Robert A. Duff, Randall L. Brukardt, Erhard Ploedereder, Pascal Leroy, Edmond Schonberg
The Ada 2012 Reference handbook is an better model of the textual content of overseas general ISO/IEC 8652/2012(E) for the programming language Ada. The Ada 2012 Reference guide combines the entire earlier corrections of Technical Corrigendum 1 and modification 1 with adjustments and additions that enhance the features of the language and the reliability of courses written within the language. The Ada 2012 Reference handbook will substitute the previous models as an fundamental operating spouse for anyone utilizing Ada professionally or studying and learning the language systematically.
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Additional resources for Ada 2012 Reference Manual. Language and Standard Libraries: International Standard ISO/IEC 8652/2012 (E)
1 Type Declarations 1 A type_declaration declares a type and its first subtype. Syntax 2 type_declaration ::= full_type_declaration | incomplete_type_declaration | private_type_declaration | private_extension_declaration 3/3 full_type_declaration ::= type defining_identifier [known_discriminant_part] is type_definition [aspect_specification]; | task_type_declaration | protected_type_declaration 4/2 type_definition ::= enumeration_type_definition | real_type_definition | record_type_definition | derived_type_definition | integer_type_definition | array_type_definition | access_type_definition | interface_type_definition Legality Rules 5 A given type shall not have a subcomponent whose type is the given type itself.
8); which code_statements cause external interactions is implementation defined. 6); • The values of imported and exported objects (see Annex B) at the time of any other interaction with the external environment. 2 Structure 13 December 2012 4 Ada Reference Manual - 2012 Edition A conforming implementation of this International Standard shall produce for the execution of a given Ada program a set of interactions with the external environment whose order and timing are consistent with the definitions and requirements of this International Standard for the semantics of the given program.
This process is also called elaboration for declarations and evaluation for expressions. One of the terms execution, elaboration, or evaluation is defined by this International Standard for each construct that has a run-time effect. Dynamic Semantics 12 NOTES 1 At compile time, the declaration of an entity declares the entity. At run time, the elaboration of the declaration creates the entity. 2 Types and Subtypes Static Semantics 1 A type is characterized by a set of values, and a set of primitive operations which implement the fundamental aspects of its semantics.