Implemented a smarter TokenStream concatenation system#35539
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bors merged 1 commit intorust-lang:masterfrom Aug 15, 2016
Merged
Implemented a smarter TokenStream concatenation system#35539bors merged 1 commit intorust-lang:masterfrom
bors merged 1 commit intorust-lang:masterfrom
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r? @sfackler (rust_highfive has picked a reviewer for you, use r? to override) |
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r? @nrc |
src/libsyntax/tokenstream.rs
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Some pretty minor comments inline, otherwise looks good. |
src/libsyntax/tokenstream.rs
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should be const, not static, also no space before the colon
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and could you add a comment please?
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r=me with those last two things addressed |
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Addressed. |
…e more efficient tokenstream usages.
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@bors: r+ |
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📌 Commit 16cc8a7 has been approved by |
Manishearth
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Implemented a smarter TokenStream concatenation system The new algorithm performs 'aggressive compacting' during concatenation as follows: - If the nodes' combined total total length is less than 32, we copy both of them into a new vector and build a new leaf node. - If one node is an internal node and the other is a 'small' leaf (length<32), we recur down the internal node on the appropriate side. - Otherwise, we construct a new internal node that points to them as left and right. This should produce notably better behavior than the current concatenation implementation.
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@bors rollup |
eddyb
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Implemented a smarter TokenStream concatenation system The new algorithm performs 'aggressive compacting' during concatenation as follows: - If the nodes' combined total total length is less than 32, we copy both of them into a new vector and build a new leaf node. - If one node is an internal node and the other is a 'small' leaf (length<32), we recur down the internal node on the appropriate side. - Otherwise, we construct a new internal node that points to them as left and right. This should produce notably better behavior than the current concatenation implementation.
eddyb
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Aug 14, 2016
Implemented a smarter TokenStream concatenation system The new algorithm performs 'aggressive compacting' during concatenation as follows: - If the nodes' combined total total length is less than 32, we copy both of them into a new vector and build a new leaf node. - If one node is an internal node and the other is a 'small' leaf (length<32), we recur down the internal node on the appropriate side. - Otherwise, we construct a new internal node that points to them as left and right. This should produce notably better behavior than the current concatenation implementation.
bors
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Aug 14, 2016
Rollup of 30 pull requests - Successful merges: #34941, #35392, #35444, #35447, #35491, #35533, #35539, #35558, #35573, #35574, #35577, #35586, #35588, #35594, #35596, #35597, #35598, #35606, #35611, #35615, #35616, #35620, #35622, #35640, #35643, #35644, #35646, #35647, #35648, #35661 - Failed merges: #35395, #35415
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The new algorithm performs 'aggressive compacting' during concatenation as follows:
them into a new vector and build a new leaf node.
we recur down the internal node on the appropriate side.
right.
This should produce notably better behavior than the current concatenation implementation.