nimforum mirror - An issue regarding `emit`

DeletedUser (orginal) [2020-07-12T14:52:04+02:00] view original

How can I deal with emit? When I use emit in global scope, it generates emit statement before normal Nim code.

import parseutils


template procName*: string =
  when declared(NimMainModule):
    echo "sdf"
  
  when not declaredInScope(internalCProcName):
    var internalCProcName {.exportc:"__the_name_should_not_be_used", inject.}: cstring
    {.emit: "__the_name_should_not_be_used = __func__;".}
    var realProcNameButShouldnotBeUsed {.inject.}: string
    discard parseUntil($internalCProcName, realProcNameButShouldnotBeUsed, "__")
  realProcNameButShouldnotBeUsed


echo procname()

It got crashed. https://play.nim-lang.org/#ix=2rr

ccache\@mtest.nim.c:76:33: error: initializer element is not computable at load time
__the_name_should_not_be_used = __func__;
                               ^~~~~~~~
ccache\@mtest.nim.c:101:24: error: conflicting types for '__the_name_should_not_be_used'
N_LIB_PRIVATE NCSTRING __the_name_should_not_be_used;
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ccache\@mtest.nim.c:76:1: note: previous definition of '__the_name_should_not_be_used' was here
__the_name_should_not_be_used = __func__;
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

It generates C code like:

__the_name_should_not_be_used = __func__;

.........................................................................................

/* section: NIM_merge_VARS */
N_LIB_PRIVATE NCSTRING __the_name_should_not_be_used;
N_LIB_PRIVATE NimStringDesc* realProcNameButShouldnotBeUsed__Ipp9c7O8sXEIShSL2Z09bqPw;

I need something like this:

/* section: NIM_merge_VARS */
N_LIB_PRIVATE NCSTRING __the_name_should_not_be_used;
N_LIB_PRIVATE NimStringDesc* realProcNameButShouldnotBeUsed__Ipp9c7O8sXEIShSL2Z09bqPw;

......................................................................................

__the_name_should_not_be_used = __func__;

Examples in https://github.com/nim-lang/Nim/issues/8212

Can I achieve that? Any suggestion? Thanks in advance.

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6539 :: An issue regarding `emit`