def build_JoinedStr(ctx, expr):
s = ''
args = []
for value in expr.values:
r = ctx.make_range(value.lineno, value.col_offset,
value.col_offset + 1)
if isinstance(value, ast.FormattedValue):
if value.conversion != -1:
raise NotSupportedError(
r, 'Don\'t support conversion in JoinedStr')
if value.format_spec is not None:
raise NotSupportedError(
r, 'Don\'t support formatting in JoinedStr')
s += '{}'
args.append(build_expr(ctx, value.value))
elif isinstance(value, ast.Str):
s += value.s
else:
raise NotSupportedError(r, 'Unsupported value in JoinedStr')
r = ctx.make_range(expr.lineno, expr.col_offset, expr.col_offset + 1)
return Apply(Select(StringLiteral(r, s), Ident(r, 'format')), args, [])
