python-langserver/python/ast.go at v0 · sourcegraph/python-langserver

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package python

import (

"sourcegraph.com/sourcegraph/sourcegraph/pkg/lsp"

)

func offsetForPosition(contents []byte, p lsp.Position) (offset uint64, valid bool) {

line := 0

col := 0

// TODO(sqs): count chars, not bytes, per LSP. does that mean we

// need to maintain 2 separate counters since we still need to

// return the offset as bytes?

for _, b := range contents {

if line == p.Line && col == p.Character {

return offset, true

}

if line > p.Line || (line == p.Line && col > p.Character) {

return 0, false

}

offset++

if b == '\n' {

line++

col = 0

} else {

col++

}

return 0, false

}