`repr` produces invalid code

[timotheecour]

repr produces invalid code

Example

import macros
macro mdbg(a): untyped =
  echo a.repr
  parseStmt(a.repr)

mdbg:
  let a = 1e1000000'f32

Current Output

let a = inf'f32
macros.nim(566, 14) Error: missing closing ' for character literal [ValueError]

Expected Output

works

Additional Information

• devel 754a196 1.3.5

I encountered this while working on a megatest for isMainModule blocks, which gathers isMainModule blocks from input files using parseStmt + repr (more details on this later)

[ringabout]

treeRepr(a) outputs:

StmtList
  LetSection
    IdentDefs
      Ident "a"
      Empty
      Float32Lit inf

[timotheecour]

nim-lang/RFCs#228 would solve this and many issues related to literals