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gocodeparser.go
49 lines (41 loc) · 1.14 KB
/
gocodeparser.go
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package parser
import (
"github.com/a-h/parse"
"github.com/a-h/templ/cfg"
"github.com/a-h/templ/parser/v2/goexpression"
)
var goCode = parse.Func(func(pi *parse.Input) (n Node, ok bool, err error) {
if !cfg.Experiment.RawGo {
return
}
// Check the prefix first.
if _, ok, err = parse.Or(parse.String("{{ "), parse.String("{{")).Parse(pi); err != nil || !ok {
return
}
// Once we have a prefix, we must have an expression that returns a string, with optional err.
l := pi.Position().Line
var r GoCode
if r.Expression, err = parseGo("go code", pi, goexpression.Expression); err != nil {
return r, false, err
}
if l != pi.Position().Line {
r.Multiline = true
}
// Clear any optional whitespace.
_, _, _ = parse.OptionalWhitespace.Parse(pi)
// }}
if _, ok, err = dblCloseBraceWithOptionalPadding.Parse(pi); err != nil || !ok {
err = parse.Error("go code: missing close braces", pi.Position())
return
}
// Parse trailing whitespace.
ws, _, err := parse.Whitespace.Parse(pi)
if err != nil {
return r, false, err
}
r.TrailingSpace, err = NewTrailingSpace(ws)
if err != nil {
return r, false, err
}
return r, true, nil
})