68 lines
1.9 KiB
Plaintext
68 lines
1.9 KiB
Plaintext
// JsonCursorBox: minimal JSON scanning helpers (Nyash)
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// Note: naive and partial; sufficient for MVP patterns (string/int + bracket depth)
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static box JsonCursorBox {
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next_non_ws(s, pos) {
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local i = pos
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local n = s.length()
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loop (i < n) {
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local ch = s.substring(i, i+1)
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if ch != " " && ch != "\n" && ch != "\r" && ch != "\t" { return i }
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i = i + 1
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}
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return -1
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}
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read_quoted_from(s, pos) {
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local i = pos
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if s.substring(i, i+1) != "\"" { return "" }
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i = i + 1
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local out = ""
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local n = s.length()
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loop (i < n) {
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local ch = s.substring(i, i+1)
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if ch == "\"" { break }
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if ch == "\\" { i = i + 1 ch = s.substring(i, i+1) }
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out = out + ch
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i = i + 1
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}
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return out
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}
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read_digits_from(s, pos) {
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local out = ""
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local i = pos
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if i == null { return out }
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if i < 0 { return out }
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loop (true) {
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local ch = s.substring(i, i+1)
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if ch == "" { break }
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if ch == "0" || ch == "1" || ch == "2" || ch == "3" || ch == "4" || ch == "5" || ch == "6" || ch == "7" || ch == "8" || ch == "9" { out = out + ch i = i + 1 } else { break }
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}
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return out
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}
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find_balanced_array_end(s, idx) {
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local n = s.length()
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if s.substring(idx, idx+1) != "[" { return -1 }
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local depth = 0
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local i = idx
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loop (i < n) {
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local ch = s.substring(i, i+1)
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if ch == "[" { depth = depth + 1 }
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if ch == "]" { depth = depth - 1 if depth == 0 { return i } }
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i = i + 1
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}
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return -1
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}
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find_balanced_object_end(s, idx) {
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local n = s.length()
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if s.substring(idx, idx+1) != "{" { return -1 }
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local depth = 0
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local i = idx
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loop (i < n) {
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local ch = s.substring(i, i+1)
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if ch == "{" { depth = depth + 1 }
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if ch == "}" { depth = depth - 1 if depth == 0 { return i } }
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i = i + 1
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}
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return -1
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}
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}
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