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parser: improve string parsing performance #220

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Improve string parsing performance by avoiding copying when possible.

Improve string parsing performance by avoiding copying when
possible.
@belochub belochub added this to the 1.0.0 milestone Jun 12, 2017
@@ -456,8 +463,10 @@ MaybeLocal<Value> ParseString(Isolate* isolate,

if (begin[i] == '\\') {
if (IsLineTerminatorSequence(begin + i + 1, &in_offset)) {
use_fallback(i - 1);
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We can move this line to the outer block and get rid of the analogous one in the else clause, can't we?

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@aqrln
Nope, it won't work the same.

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@aqrln
Yeah, after looking at it one more time it looks okay, I changed it like you proposed.

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LGTM

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@lundibundi lundibundi left a comment

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GJ

@belochub belochub force-pushed the parser-string-perf branch from fd149ad to 0b97e4c Compare June 15, 2017 09:57
aqrln pushed a commit that referenced this pull request Jun 15, 2017
Improve string parsing performance by avoiding copying when
possible.

PR-URL: #220
Reviewed-By: Alexey Orlenko <eaglexrlnk@gmail.com>
Reviewed-By: Dmytro Nechai <nechaido@gmail.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
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aqrln commented Jun 15, 2017

Latest changes LGTM. Landed in 1f1d7d0.

@aqrln aqrln closed this Jun 15, 2017
@aqrln aqrln deleted the parser-string-perf branch June 15, 2017 12:41
belochub added a commit that referenced this pull request Jan 22, 2018
Improve string parsing performance by avoiding copying when
possible.

PR-URL: #220
Reviewed-By: Alexey Orlenko <eaglexrlnk@gmail.com>
Reviewed-By: Dmytro Nechai <nechaido@gmail.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
belochub added a commit that referenced this pull request Jan 22, 2018
Improve string parsing performance by avoiding copying when
possible.

PR-URL: #220
Reviewed-By: Alexey Orlenko <eaglexrlnk@gmail.com>
Reviewed-By: Dmytro Nechai <nechaido@gmail.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
@belochub belochub mentioned this pull request Jan 22, 2018
belochub added a commit that referenced this pull request Jan 23, 2018
This is a new and shiny first major release for `metarhia-jstp`.
Changes include API refactoring and improvements, implementations of
CLI, sessions, and application versions, native addon build optimizations,
lots of bug fixes, test coverage increase, and other, less notable changes.

This release also denotes the bump of the protocol version to v1.0.
The only difference from the previous version of the protocol is that
"old" heartbeat messages (`{}`) are now deprecated and `ping`/`pong`
messages must be used for this purpose instead.

Notable changes:

 * **src,build:** improve the native module subsystem
   *(Alexey Orlenko)*
   [#36](#36)
   **\[semver-minor\]**
 * **build:** compile in ISO C++11 mode
   *(Alexey Orlenko)*
   [#37](#37)
   **\[semver-minor\]**
 * **build:** improve error handling
   *(Alexey Orlenko)*
   [#40](#40)
   **\[semver-minor\]**
 * **lib:** refactor record-serialization.js
   *(Alexey Orlenko)*
   [#41](#41)
 * **parser:** fix a possible memory leak
   *(Alexey Orlenko)*
   [#44](#44)
   **\[semver-minor\]**
 * **protocol:** change the format of handshake packets
   *(Alexey Orlenko)*
   [#54](#54)
   **\[semver-major\]**
 * **parser:** make parser single-pass
   *(Mykola Bilochub)*
   [#61](#61)
 * **parser:** remove special case for '\0' literal
   *(Mykola Bilochub)*
   [#68](#68)
   **\[semver-major\]**
 * **parser:** fix bug causing node to crash
   *(Mykola Bilochub)*
   [#75](#75)
 * **client:** drop redundant callback argument
   *(Alexey Orlenko)*
   [#104](#104)
   **\[semver-major\]**
 * **client:** handle errors in connectAndInspect
   *(Alexey Orlenko)*
   [#105](#105)
   **\[semver-major\]**
 * **socket,ws:** use socket.destroy() properly
   *(Alexey Orlenko)*
   [#84](#84)
   **\[semver-major\]**
 * **cli:** add basic implementation
   *(Mykola Bilochub)*
   [#107](#107)
   **\[semver-minor\]**
 * **connection:** fix error handling in optional cbs
   *(Alexey Orlenko)*
   [#147](#147)
   **\[semver-major\]**
 * **test:** add JSON5 specs test suite
   *(Alexey Orlenko)*
   [#158](#158)
 * **lib:** change event signature
   *(Denys Otrishko)*
   [#187](#187)
   **\[semver-major\]**
 * **lib:** add address method to Server
   *(Denys Otrishko)*
   [#190](#190)
   **\[semver-minor\]**
 * **parser:** implement NaN and Infinity parsing
   *(Mykola Bilochub)*
   [#201](#201)
 * **parser:** improve string parsing performance
   *(Mykola Bilochub)*
   [#220](#220)
 * **lib:** optimize connection events
   *(Denys Otrishko)*
   [#222](#222)
   **\[semver-major\]**
 * **lib:** refactor server and client API
   *(Denys Otrishko)*
   [#209](#209)
   **\[semver-major\]**
 * **lib,src:** rename term packet usages to message
   *(Denys Otrishko)*
   [#270](#270)
   **\[semver-major\]**
 * **lib:** emit events about connection messages
   *(Denys Otrishko)*
   [#252](#252)
   **\[semver-minor\]**
 * **lib:** implement API versioning
   *(Denys Otrishko)*
   [#231](#231)
   **\[semver-minor\]**
 * **lib:** allow to set event handlers in application
   *(Denys Otrishko)*
   [#286](#286)
   **\[semver-minor\]**
 * **lib:** allow to broadcast events from server
   *(Denys Otrishko)*
   [#287](#287)
   **\[semver-minor\]**
 * **connection:** make callback method private
   *(Alexey Orlenko)*
   [#306](#306)
   **\[semver-major\]**
 * **lib:** implement sessions
   *(Mykola Bilochub)*
   [#289](#289)
   **\[semver-major\]**
 * **connection:** use ping-pong instead of heartbeat
   *(Dmytro Nechai)*
   [#303](#303)
   **\[semver-major\]**
belochub added a commit to metarhia/mdsf that referenced this pull request Jul 19, 2018
Improve string parsing performance by avoiding copying when
possible.

PR-URL: metarhia/jstp#220
Reviewed-By: Alexey Orlenko <eaglexrlnk@gmail.com>
Reviewed-By: Dmytro Nechai <nechaido@gmail.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
belochub added a commit to metarhia/mdsf that referenced this pull request Jul 19, 2018
Improve string parsing performance by avoiding copying when
possible.

PR-URL: metarhia/jstp#220
Reviewed-By: Alexey Orlenko <eaglexrlnk@gmail.com>
Reviewed-By: Dmytro Nechai <nechaido@gmail.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
belochub added a commit to metarhia/mdsf that referenced this pull request Jul 21, 2018
Improve string parsing performance by avoiding copying when
possible.

PR-URL: metarhia/jstp#220
Reviewed-By: Alexey Orlenko <eaglexrlnk@gmail.com>
Reviewed-By: Dmytro Nechai <nechaido@gmail.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
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4 participants