--- Log opened Wed May 29 00:00:26 2019
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03:50 < stevenroose> Is anyone relying on the OutPoint serde impl to be struct-based instead of string-based?
03:50 < stevenroose> It currently serializes to {"txid": ..., "vout": ...} instead of to "<txid>:<vout>" like the to_string and from_str do it.
03:50 < stevenroose> I'd like to change that.
04:09 < stevenroose> I'm thinking of struct-based for non-human-readable and string-based for human-readable so we can fix JSON but don't make other formats more verbose (like hashes basically)
04:09 < stevenroose> I pushed an update to https://github.com/rust-bitcoin/rust-bitcoin/pull/269
04:10 < stevenroose> I introduce a new macro serde_string_impl!(Type, "expecting xxx") that implements serde on a type using the Display for Serialize and FromStr for Deserialize.
04:10 < stevenroose> It's used for Address, DerivationPath, ExtendedPrivKey and ExtendedPubKey for now
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04:40 < stevenroose> How about a base64 Display for psbt::PartiallySignedTransaction?
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05:04 < elichai2> ariard: saw it only now, when I say avoid invoking malloc it can be either to avoid using the heap or just because malloc isn't available in the targeted platform
05:13 < elichai2> using GlobalAlloc will also use the heap. I think in the end almost everyone will use the heap unless they have preallocated few MBs on the stack to give around
05:23 < stevenroose> TamasBlummer: any progress on upstreaming the spv filter module? I could try do it myself if you prefer
05:23 < real_or_random> elichai2: for estimating the max size of the ctx: it's probably reasonable enough to hard code an guess for an upper bound and bail out if it turns out to be wrong (if _preallocated_size()) returns more than the guess
05:26 < elichai2> real_or_random: you're saying on our(rust-secp256k1) side? or on the user side?
05:26 < real_or_random> ok, that's a good question
05:27 < elichai2> real_or_random: this adds the functions for the User to use: https://github.com/rust-bitcoin/rust-secp256k1/pull/116
05:27 < elichai2> and he can either allocate or assume
05:32 < real_or_random> you mean "pub fn get_preallocated_size() -> usize" ? sounds good
05:35 < elichai2> real_or_random: yeah, and another 2 for verification only and signing only
05:35 < elichai2> (and then I save a reference to the buffer in the Context struct so the user won't be able to mutate or drop it)
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05:55 < stevenroose> One sad thing with JSON that we probably can't really fix elegantly is the witness stack for transactions. This is how a Transaction looks like in JSON: https://gist.github.com/stevenroose/33755fe85bc72675a20eca56a798f73d
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07:11 < ariard> elichain2: was thinking with GlobalAlloc you override default allocator, so it let you implement your custom stack-based allocator for your weird-MIPS platform or whatever
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07:21 < elichai2> yeah. you can override it with it. if we go with that assumption we can just use liballoc and use a Vec ourself
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--- Log closed Thu May 30 00:00:26 2019