gudusoft.gsqlparser.parser.powerquery

Class PowerQueryEscapeDecoder

Object

gudusoft.gsqlparser.parser.powerquery.PowerQueryEscapeDecoder

public final class PowerQueryEscapeDecoder
extends Object

Decodes Power Query M-language string escape sequences.

M uses a mix of embedded-quote doubling and #(...) character escapes. The standard forms we must support:

   ""             → literal "
   #(lf)          → \n
   #(cr)          → \r
   #(cr,lf)       → \r\n
   #(tab)         → \t
   #(XXXX)        → Unicode codepoint (4 hex digits)
   #(XXXXXXXX)    → Unicode codepoint (8 hex digits)
 

Any unrecognised #(…) sequence is preserved verbatim in the output — the plan's "never silent wrong lineage" rule applies: we'd rather leave a suspicious literal alone than silently produce a wrong SQL string. Callers can detect such cases via PowerQueryEscapeDecoder.Result.hasWarnings().

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PowerQueryEscapeDecoder.Result

Method Summary

Modifier and Type	Method and Description
static PowerQueryEscapeDecoder.Result	decode(String raw) Decode the raw text inside the surrounding double quotes of an M string literal.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

decode

public static PowerQueryEscapeDecoder.Result decode(String raw)

Decode the raw text inside the surrounding double quotes of an M string literal. Do not pass the surrounding quotes.