Commit Graph

17 Commits

Author SHA1 Message Date
Thomas Pelletier 67bc5422f3 Go 1.19 (#802) 2022-08-15 10:56:33 -04:00
Thomas Pelletier 696dd25c17 Decoder: disallow modification of existing table (#704)
Fixes #703
2021-12-15 11:05:27 -05:00
Thomas Pelletier f27a07d31a seen: verify arrays (#663)
Fixes #662
2021-11-09 20:26:30 -05:00
kkHAIKE 8be357dfa1 Add LocalTime to interface{} decode support (#567)
Co-authored-by: Thomas Pelletier <thomas@pelletier.codes>
2021-07-21 17:50:12 +02:00
Thomas Pelletier 618f0181ac AST Tweaks (#551)
* Use pointers instead of copying around ast.Node

Node is a 56B struct that is constantly in the hot path. Passing nodes
around by copy had a cost that started to add up. This change replaces
them by pointers. Using unsafe pointer arithmetic and converting
sibling/child indexes to relative offsets, it removes the need to carry
around a pointer to the root of the tree. This saves 8B per Node. This
space will be used to store an extra []byte slice to provide contextual
error handling on all nodes, including the ones whose data is different
than the raw input (for example: strings with escaped characters), while
staying under the size of a cache line.

* Remove conditional

* Add Raw to track range in data for parsed values

* Simplify reference tracking
2021-06-03 21:48:51 -04:00
Thomas Pelletier 250e073408 Stack-based unmarshaler (#546)
* Benchmark script

* Rewrite unmarshaler using the stack

Instead of tracking the build chain using `target`s, use the stack
instead.

Working and most benchmarks look good, but regression on structs unmarshalling.

~60% slower on ReferenceFile/struct.

* Shortcut to check if last node of iterator

* Remove unecessary pointer allocation

* Skip over unused keys without marking them as seen

* Add some tests

* Fix mktemp on macos
2021-05-31 12:14:13 -04:00
Thomas Pelletier 390927a0cd Reuse AST storage between top-level expressions
```
Comparing:
	old: v2-wip/1da2fc7 (2021-03-25 20:38:05 -0400 -0400)
	run: v2-wip/3f23ab9 (2021-03-25 22:35:06 -0400 -0400)
-----------------------------------------------------------
name                  old time/op    new time/op    delta
UnmarshalSimple/v2-8     700ns ± 3%     705ns ± 2%     ~     (p=0.690 n=5+5)
UnmarshalSimple/v1-8    3.85µs ± 1%    4.02µs ± 4%   +4.19%  (p=0.032 n=5+5)
UnmarshalSimple/bs-8    2.34µs ± 2%    2.38µs ± 3%     ~     (p=0.310 n=5+5)
ReferenceFile/v2-8      32.2µs ±13%    23.9µs ± 1%  -25.79%  (p=0.008 n=5+5)
ReferenceFile/v1-8       270µs ± 2%     264µs ± 2%     ~     (p=0.095 n=5+5)
ReferenceFile/bs-8       291µs ± 0%     294µs ± 0%   +0.88%  (p=0.008 n=5+5)

name                  old alloc/op   new alloc/op   delta
ReferenceFile/v2-8      37.1kB ± 0%     6.7kB ± 0%  -81.91%  (p=0.008 n=5+5)
ReferenceFile/v1-8       131kB ± 0%     131kB ± 0%     ~     (p=0.444 n=5+5)
ReferenceFile/bs-8      80.8kB ± 0%    80.8kB ± 0%     ~     (p=0.571 n=5+5)

name                  old allocs/op  new allocs/op  delta
ReferenceFile/v2-8         152 ± 0%       148 ± 0%   -2.63%  (p=0.008 n=5+5)
ReferenceFile/v1-8       2.65k ± 0%     2.65k ± 0%     ~     (all equal)
ReferenceFile/bs-8       1.73k ± 0%     1.73k ± 0%     ~     (all equal)

~/s/g/p/g/benchmark$ go test -bench=.
goos: linux
goarch: amd64
pkg: github.com/pelletier/go-toml/v2/benchmark
cpu: Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz
BenchmarkUnmarshalSimple/v2-8         	 1692444	       710.7 ns/op
BenchmarkUnmarshalSimple/v1-8         	  307609	      3862 ns/op
BenchmarkUnmarshalSimple/bs-8         	  520429	      2285 ns/op
BenchmarkReferenceFile/v2-8           	   50395	     24006 ns/op	    6704 B/op	     148 allocs/op
BenchmarkReferenceFile/v1-8           	    4144	    264655 ns/op	  130567 B/op	    2649 allocs/op
BenchmarkReferenceFile/bs-8           	    3969	    293635 ns/op	   80784 B/op	    1729 allocs/op
PASS
ok  	github.com/pelletier/go-toml/v2/benchmark	8.143s
```
2021-03-25 22:37:16 -04:00
Thomas Pelletier 1d332cd112 Add documentation for the AST 2021-03-25 20:46:31 -04:00
Thomas Pelletier 9d3a912da0 Remove unused interface
Comparing:
	old: v2-wip/17299c9 (2021-03-25 20:19:40 -0400 -0400)
	run: v2-wip/1da2fc7 (2021-03-25 20:38:05 -0400 -0400)
-----------------------------------------------------------
name                  old time/op    new time/op    delta
UnmarshalSimple/v2-8     755ns ± 3%     700ns ± 3%   -7.26%  (p=0.008 n=5+5)
UnmarshalSimple/v1-8    3.87µs ± 0%    3.85µs ± 1%     ~     (p=0.254 n=4+5)
UnmarshalSimple/bs-8    2.44µs ± 4%    2.34µs ± 2%     ~     (p=0.056 n=5+5)
ReferenceFile/v2-8      33.5µs ± 7%    32.2µs ±13%     ~     (p=0.421 n=5+5)
ReferenceFile/v1-8       269µs ± 3%     270µs ± 2%     ~     (p=1.000 n=5+5)
ReferenceFile/bs-8       296µs ± 2%     291µs ± 0%     ~     (p=0.095 n=5+5)

name                  old alloc/op   new alloc/op   delta
ReferenceFile/v2-8      38.9kB ± 0%    37.1kB ± 0%   -4.77%  (p=0.008 n=5+5)
ReferenceFile/v1-8       131kB ± 0%     131kB ± 0%     ~     (all equal)
ReferenceFile/bs-8      80.8kB ± 0%    80.8kB ± 0%     ~     (p=0.841 n=5+5)

name                  old allocs/op  new allocs/op  delta
ReferenceFile/v2-8         181 ± 0%       152 ± 0%  -16.02%  (p=0.008 n=5+5)
ReferenceFile/v1-8       2.65k ± 0%     2.65k ± 0%     ~     (all equal)
ReferenceFile/bs-8       1.73k ± 0%     1.73k ± 0%     ~     (all equal)
2021-03-25 20:38:45 -04:00
Thomas Pelletier 1bae751a45 Linear array storage for AST 2021-03-25 19:56:02 -04:00
Thomas Pelletier fcc91f2618 Progress on date/times 2021-03-22 09:59:15 -04:00
Thomas Pelletier 8b34e54764 Improve DOT representation for AST 2021-03-18 22:10:31 -04:00
Thomas Pelletier 9ec4e86883 Handle struct field name variations 2021-03-18 20:42:41 -04:00
Thomas Pelletier f9f9ccb777 Basic array table implementation 2021-03-16 10:24:19 -04:00
Thomas Pelletier 590d674153 Unmarshal ints and floats 2021-03-14 18:06:34 -04:00
Thomas Pelletier fbf01f7683 Handle Table 2021-03-13 22:48:31 -05:00
Thomas Pelletier 21d3e85fcc Playing with an AST
Idea would be to build a light AST as a first pass, then have the
unmarshaler and Document parser do what they need with it.
2021-03-13 11:38:09 -05:00