Re: [racket-dev] Machinery for eliding contracts
On Jun 9, 2014, at 6:02 PM, Eric Dobson eric.n.dob...@gmail.com wrote: Eric, are you talking about changing the proxy values that wrap HO/mutable contracted values? Yes. I want the proxy values to include information about who agreed to the contract in addition to the contract agreed to. I actually realize that I might need more than just the contract agreed to because of how TR changes the generated contract to remove checks for what it guarantees, so that info is not in the contract. But I believe that can be added back as a structure property on the contract. Would some form of hash-consing contracts work here? -- Matthias smime.p7s Description: S/MIME cryptographic signature _ Racket Developers list: http://lists.racket-lang.org/dev
Re: [racket-dev] Machinery for eliding contracts
On Tue, Jun 10, 2014 at 6:15 AM, Matthias Felleisen matth...@ccs.neu.edu wrote: On Jun 9, 2014, at 6:02 PM, Eric Dobson eric.n.dob...@gmail.com wrote: Eric, are you talking about changing the proxy values that wrap HO/mutable contracted values? Yes. I want the proxy values to include information about who agreed to the contract in addition to the contract agreed to. I actually realize that I might need more than just the contract agreed to because of how TR changes the generated contract to remove checks for what it guarantees, so that info is not in the contract. But I believe that can be added back as a structure property on the contract. Would some form of hash-consing contracts work here? -- Matthias I don't think so. But not sure exactly what you are proposing. The issue is that there are 4 contracts here and 2 of them currently do not exist at runtime. The 4 are TRs checks/promises on an export/import. (Using import for a value flowing into an exported function). The promise contracts do not currently exist as removing them was my previous optimization (They never fail). What I want to do is change the check on import from (array/c symbol?) to (if/c (protected? (array/c symbol?)) any/c (array/c symbol?)). Where (protected? x/c) checks if TR already promised something stronger than x/c. I believe that you are proposing that we can use the identity of the contract returned by value-contract to determine what the promised contract would have been. This does not work as (Array Symbol) and (Array Float) both get translated to (array/c any/c) for export, and we would want to lookup different promised contracts for them. We could use weak hash map as an extra field but that seems like it would be slow. _ Racket Developers list: http://lists.racket-lang.org/dev
Re: [racket-dev] Machinery for eliding contracts
I was thinking of associating the contract with the type from which it comes and no that's not hash-consing. And if it's slower, too bad. -- Matthias On Jun 10, 2014, at 12:47 PM, Eric Dobson eric.n.dob...@gmail.com wrote: On Tue, Jun 10, 2014 at 6:15 AM, Matthias Felleisen matth...@ccs.neu.edu wrote: On Jun 9, 2014, at 6:02 PM, Eric Dobson eric.n.dob...@gmail.com wrote: Eric, are you talking about changing the proxy values that wrap HO/mutable contracted values? Yes. I want the proxy values to include information about who agreed to the contract in addition to the contract agreed to. I actually realize that I might need more than just the contract agreed to because of how TR changes the generated contract to remove checks for what it guarantees, so that info is not in the contract. But I believe that can be added back as a structure property on the contract. Would some form of hash-consing contracts work here? -- Matthias I don't think so. But not sure exactly what you are proposing. The issue is that there are 4 contracts here and 2 of them currently do not exist at runtime. The 4 are TRs checks/promises on an export/import. (Using import for a value flowing into an exported function). The promise contracts do not currently exist as removing them was my previous optimization (They never fail). What I want to do is change the check on import from (array/c symbol?) to (if/c (protected? (array/c symbol?)) any/c (array/c symbol?)). Where (protected? x/c) checks if TR already promised something stronger than x/c. I believe that you are proposing that we can use the identity of the contract returned by value-contract to determine what the promised contract would have been. This does not work as (Array Symbol) and (Array Float) both get translated to (array/c any/c) for export, and we would want to lookup different promised contracts for them. We could use weak hash map as an extra field but that seems like it would be slow. _ Racket Developers list: http://lists.racket-lang.org/dev
[racket-dev] fresh install ends in
raco setup: package declares no dependencies: txexpr raco setup: package declares no dependencies: sugar hash-ref: no value found for key key: racket context...: /Users/matthias/plt/racket/collects/setup/private/pkg-deps.rkt:227:8: for-loop /Users/matthias/plt/racket/collects/racket/private/map.rkt:21:13: map /Users/matthias/plt/racket/collects/setup/private/pkg-deps.rkt:415:2: for-loop /Users/matthias/plt/racket/collects/setup/private/pkg-deps.rkt:24:0: check-package-dependencies /Users/matthias/plt/racket/collects/setup/setup-core.rkt:61:0: setup-core /Users/matthias/plt/racket/collects/setup/setup-go.rkt: [running body] /Users/matthias/plt/racket/collects/setup/main.rkt: [running body] /Users/matthias/plt/racket/collects/raco/main.rkt: [running body] make[1]: *** [plain-in-place] Error 1 make: *** [in-place] Error 2 _ Racket Developers list: http://lists.racket-lang.org/dev
Re: [racket-dev] fresh install ends in
I've pushed a repair. At Tue, 10 Jun 2014 13:04:30 -0400, Matthias Felleisen wrote: raco setup: package declares no dependencies: txexpr raco setup: package declares no dependencies: sugar hash-ref: no value found for key key: racket context...: /Users/matthias/plt/racket/collects/setup/private/pkg-deps.rkt:227:8: for-loop /Users/matthias/plt/racket/collects/racket/private/map.rkt:21:13: map /Users/matthias/plt/racket/collects/setup/private/pkg-deps.rkt:415:2: for-loop /Users/matthias/plt/racket/collects/setup/private/pkg-deps.rkt:24:0: check-package-dependencies /Users/matthias/plt/racket/collects/setup/setup-core.rkt:61:0: setup-core /Users/matthias/plt/racket/collects/setup/setup-go.rkt: [running body] /Users/matthias/plt/racket/collects/setup/main.rkt: [running body] /Users/matthias/plt/racket/collects/raco/main.rkt: [running body] make[1]: *** [plain-in-place] Error 1 make: *** [in-place] Error 2 _ Racket Developers list: http://lists.racket-lang.org/dev _ Racket Developers list: http://lists.racket-lang.org/dev
