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improve parser performance
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@goccy
goccy committed Oct 31, 2024
1 parent 3788afc commit 6e2b871
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4 changes: 2 additions & 2 deletions benchmarks/go.mod
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,6 @@ replace github.com/goccy/go-yaml => ../

require (
github.com/goccy/go-yaml v0.0.0-00010101000000-000000000000
gopkg.in/yaml.v2 v2.3.0
gopkg.in/yaml.v3 v3.0.0-20200506231410-2ff61e1afc86
gopkg.in/yaml.v2 v2.4.0
gopkg.in/yaml.v3 v3.0.1
)
117 changes: 79 additions & 38 deletions benchmarks/go.sum
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@@ -1,75 +1,116 @@
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
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github.com/fatih/color v1.10.0 h1:s36xzo75JdqLaaWoiEHk767eHiwo0598uUxyfiPkDsg=
github.com/fatih/color v1.10.0/go.mod h1:ELkj/draVOlAH/xkhN6mQ50Qd0MPOk5AAr3maGEBuJM=
github.com/go-playground/assert/v2 v2.0.1 h1:MsBgLAaY856+nPRTKrp3/OZK38U/wa0CcBYNjji3q3A=
github.com/go-playground/assert/v2 v2.0.1/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
github.com/go-playground/locales v0.13.0 h1:HyWk6mgj5qFqCT5fjGBuRArbVDfE4hi8+e8ceBS/t7Q=
github.com/go-playground/locales v0.13.0/go.mod h1:taPMhCMXrRLJO55olJkUXHZBHCxTMfnGwq/HNwmWNS8=
github.com/go-playground/universal-translator v0.17.0 h1:icxd5fm+REJzpZx7ZfpaD876Lmtgy7VtROAbHHXk8no=
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golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v3 v3.0.0-20200506231410-2ff61e1afc86 h1:OfFoIUYv/me30yv7XlMy4F9RJw8DEm8WQ6QG1Ph4bH0=
gopkg.in/yaml.v3 v3.0.0-20200506231410-2ff61e1afc86/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
154 changes: 9 additions & 145 deletions parser/context.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3,17 +3,11 @@ package parser
import (
"fmt"
"strings"

"github.com/goccy/go-yaml/token"
)

// context context at parsing
type context struct {
parent *context
idx int
size int
tokens token.Tokens
path string
path string
}

var pathSpecialChars = []string{
Expand All @@ -37,149 +31,19 @@ func normalizePath(path string) string {
}

func (c *context) withChild(path string) *context {
ctx := c.copy()
path = normalizePath(path)
ctx.path += fmt.Sprintf(".%s", path)
return ctx
ctx := *c
ctx.path = c.path + "." + normalizePath(path)
return &ctx
}

func (c *context) withIndex(idx uint) *context {
ctx := c.copy()
ctx.path += fmt.Sprintf("[%d]", idx)
return ctx
}

func (c *context) copy() *context {
return &context{
parent: c,
idx: c.idx,
size: c.size,
tokens: append(token.Tokens{}, c.tokens...),
path: c.path,
}
}

func (c *context) next() bool {
return c.idx < c.size
}

func (c *context) previousToken() *token.Token {
if c.idx > 0 {
return c.tokens[c.idx-1]
}
return nil
ctx := *c
ctx.path = c.path + "[" + fmt.Sprint(idx) + "]"
return &ctx
}

func (c *context) insertToken(idx int, tk *token.Token) {
if c.parent != nil {
c.parent.insertToken(idx, tk)
}
if c.size < idx {
return
}
if c.size == idx {
curToken := c.tokens[c.size-1]
tk.Next = curToken
curToken.Prev = tk

c.tokens = append(c.tokens, tk)
c.size = len(c.tokens)
return
}

curToken := c.tokens[idx]
tk.Next = curToken
curToken.Prev = tk

c.tokens = append(c.tokens[:idx+1], c.tokens[idx:]...)
c.tokens[idx] = tk
c.size = len(c.tokens)
}

func (c *context) currentToken() *token.Token {
if c.idx >= c.size {
return nil
}
return c.tokens[c.idx]
}

func (c *context) nextToken() *token.Token {
if c.idx+1 >= c.size {
return nil
}
return c.tokens[c.idx+1]
}

func (c *context) nextNotCommentToken() *token.Token {
for i := c.idx + 1; i < c.size; i++ {
tk := c.tokens[i]
if tk.Type == token.CommentType {
continue
}
return tk
}
return nil
}

func (c *context) afterNextNotCommentToken() *token.Token {
notCommentTokenCount := 0
for i := c.idx + 1; i < c.size; i++ {
tk := c.tokens[i]
if tk.Type == token.CommentType {
continue
}
notCommentTokenCount++
if notCommentTokenCount == 2 {
return tk
}
}
return nil
}

func (c *context) isCurrentCommentToken() bool {
tk := c.currentToken()
if tk == nil {
return false
}
return tk.Type == token.CommentType
}

func (c *context) progressIgnoreComment(num int) {
if c.parent != nil {
c.parent.progressIgnoreComment(num)
}
if c.size <= c.idx+num {
c.idx = c.size
} else {
c.idx += num
}
}

func (c *context) progress(num int) {
if c.isCurrentCommentToken() {
return
}
c.progressIgnoreComment(num)
}

func newContext(tokens token.Tokens, mode Mode) *context {
filteredTokens := []*token.Token{}
if mode&ParseComments != 0 {
filteredTokens = tokens
} else {
for _, tk := range tokens {
if tk.Type == token.CommentType {
continue
}
// keep prev/next reference between tokens containing comments
// https://github.com/goccy/go-yaml/issues/254
filteredTokens = append(filteredTokens, tk)
}
}
func newContext() *context {
return &context{
idx: 0,
size: len(filteredTokens),
tokens: token.Tokens(filteredTokens),
path: "$",
path: "$",
}
}
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