arpio/treerack
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allocate only once in generated code

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This commit is contained in:
Arpad Ryszka 2026-09-27 18:13:56 +02:00
parent 9f1a457c24
commit b589e4d0df
2 changed files with 22 additions and 8 deletions
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9
internal/self/self.gen.go
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@ -899,7 +899,7 @@ func parseInput(r io.Reader, p parser, b builder, kw []parser, maxTraceLength in
// eo head
func Parse(r io.Reader) (Node, error) {
var selfParse = func() func(io.Reader) (Node, error) {
var p183 = sequenceParser{id: 183, commit: 768, name: "syntax", ranges: [][]int{{0, -1}, {1, 1}, {0, -1}}}
var p181 = choiceParser{id: 181, commit: 2}
@ -1469,6 +1469,11 @@ func Parse(r io.Reader) (Node, error) {
b183.items = []builder{&b181, &b182, &b181}
var keywords = []parser{}
return func(r io.Reader) (Node, error) {
return parseInput(r, &p183, &b183, keywords, 0)
}
}()
return parseInput(r, &p183, &b183, keywords, 0)
func Parse(r io.Reader) (Node, error) {
return selfParse(r)
}

21
syntax.go
View File

@ -539,12 +539,7 @@ func (s *Syntax) Generate(o GeneratorOptions, w io.Writer) error {
fprintln()
fprintln()
if o.Export {
fprint(`func Parse(r io.Reader) (Node, error) {`)
} else {
fprint(`func parse(r io.Reader) (node, error) {`)
}
fprintf(`var %sParse = func() func(io.Reader) (Node, error) {`, o.PackageName)
fprintln()
done := make(map[string]bool)
@ -573,8 +568,22 @@ func (s *Syntax) Generate(o GeneratorOptions, w io.Writer) error {
fprint(`}`)
fprintln()
fprint(`return func(r io.Reader) (Node, error) {`)
fprintln()
fprintf(`return parseInput(r, &p%d, &b%d, keywords, 0)`, s.root.parser().nodeID(), s.root.builder().nodeID())
fprint(`}`)
fprintln()
fprint(`}()`)
fprintln()
if o.Export {
fprint(`func Parse(r io.Reader) (Node, error) {`)
} else {
fprint(`func parse(r io.Reader) (node, error) {`)
}
fprintln()
fprintf(`return %sParse(r)`, o.PackageName)
fprintln()
fprint(`}`)
fprintln()