Difference between revisions of "SCOOP-A3: Compiler adaptation"

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[[Category:Compiler]]
 
[[Category:Compiler]]
 
Team: [[User:Alexander Kogtenkov|Alexander Kogtenkov]], [[User:Ted|Ted]]
 
Team: [[User:Alexander Kogtenkov|Alexander Kogtenkov]], [[User:Ted|Ted]]
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= Summary =
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* '''Parser'''
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** Support only separate type declarations (exclude separate class declarations).
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** Provide syntax to refer to the processors (not supported in [[EiffelStudio_6.7_Releases|6.7]]).
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** Take into account the possibility to use anchors.
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* '''Type checking''' introduces new
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** Conformance rules that affect type system
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** Validity rules that require good description of errors
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* '''Code generation''' is closely connected with work on the scheduler (A1, A2) and should target
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** bytecode
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** C code
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** CIL code
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= Decisions =
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# Syntax
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#* Drop support of separate classes, only separate types are supported.
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#* Separate mark is allowed not only for class types, but also for other types.
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# Semantics
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#* Default formal generic constraint is <e>detachable separate ANY</e>.
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#* Formal generic is considered non-separate if at least one constraint is not separate, otherwise it is considered separate.
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# Code generation
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#* Separate and non-separate class types are generated separately, i.e. <e>ANY</e> and <e>separate ANY</e> get different code.
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#* Generic derivations with separate and non-separate generics are generated separately, i.e. <e>ARRAY [G]</e> and <e>ARRAY [separate G]</e> get different code.
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# User interface
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#* CECIL does not support separate types in [[EiffelStudio_6.7_Releases|6.7]].
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#* Storable does not support separate types in [[EiffelStudio_6.7_Releases|6.7]].
  
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* Parsing is already taken care of
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= Open questions =
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* Code generation closely connected with work on the scheduler (A1, A2)
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* Shall separate types be supported in CECIL? If yes, how is this done?
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* Validity rules are important; part of the challenge is to turn the SCOOP type system
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  (devised by Piotr Nienaltowski) into compiler verifications and meaningful error messages.
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= Progress =
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{| border="1" style="border-collapse: collapse; border-width: 1px; border-style: solid;"
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|+ SCOOP support in compiler
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! Functionality !! Status
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|-
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| Syntax for separate types || rev#84252
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|-
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| Separate status in conformance tests ||
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|-
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| Validity rules specific to separate types ||
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|-
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| Bytecode generation ||
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|-
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| C code generation ||
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|-
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| CIL code generation ||
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|}

Latest revision as of 07:18, 25 August 2010

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Team: Alexander Kogtenkov, Ted

Summary

  • Parser
    • Support only separate type declarations (exclude separate class declarations).
    • Provide syntax to refer to the processors (not supported in 6.7).
    • Take into account the possibility to use anchors.
  • Type checking introduces new
    • Conformance rules that affect type system
    • Validity rules that require good description of errors
  • Code generation is closely connected with work on the scheduler (A1, A2) and should target
    • bytecode
    • C code
    • CIL code

Decisions

  1. Syntax
    • Drop support of separate classes, only separate types are supported.
    • Separate mark is allowed not only for class types, but also for other types.
  2. Semantics
    • Default formal generic constraint is detachable separate ANY.
    • Formal generic is considered non-separate if at least one constraint is not separate, otherwise it is considered separate.
  3. Code generation
    • Separate and non-separate class types are generated separately, i.e. ANY and separate ANY get different code.
    • Generic derivations with separate and non-separate generics are generated separately, i.e. ARRAY [G] and ARRAY [separate G] get different code.
  4. User interface
    • CECIL does not support separate types in 6.7.
    • Storable does not support separate types in 6.7.

Open questions

  • Shall separate types be supported in CECIL? If yes, how is this done?

Progress

SCOOP support in compiler
Functionality Status
Syntax for separate types rev#84252
Separate status in conformance tests
Validity rules specific to separate types
Bytecode generation
C code generation
CIL code generation
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