nimforum mirror - Wrapper for miniz

mantielero (orginal) [2019-07-14T23:58:34+02:00] view original

I am trying to wrap miniz. I am using nimterop, so I created a file miniz_wrapper.nim as follows:

import os, strutils

import nimterop/[cimport, git, paths]

const
  baseDir = currentSourcePath.parentDir()/"build"
  
  srcDir = baseDir/"project"

static:
  cDebug()
  cDisableCaching()
  
  
  downloadUrl("https://github.com/richgel999/miniz/releases/download/2.1.0/miniz-2.1.0.zip", outdir = srcDir)

cIncludeDir(srcDir)

cOverride:
  defineEnum(Enum_minizh8)
  const
    TDEFL_LZ_CODE_BUF_SIZE* = (64*1024).Enum_minizh8
    TDEFL_OUT_BUF_SIZE* = ((TDEFL_LZ_CODE_BUF_SIZE.int*13)/10).Enum_minizh8
    TDEFL_MAX_HUFF_SYMBOLS* = (288).Enum_minizh8
    TDEFL_LZ_HASH_BITS* = (15).Enum_minizh8
    TDEFL_LEVEL1_HASH_SIZE_MASK* = (4095).Enum_minizh8
    TDEFL_LZ_HASH_SHIFT* = ((TDEFL_LZ_HASH_BITS.int+2)/3).Enum_minizh8
    TDEFL_LZ_HASH_SIZE* = (1 shl TDEFL_LZ_HASH_BITS).Enum_minizh8



# From CMakeLists
cDefine("MINIZ_API_VERSION","2")
cDefine("MINIZ_MINOR_VERSION", "1")
cDefine("MINIZ_PATCH_VERSION", "0")
cDefine("MINIZ_VERSION", "2.1.0")


#{.passC: "flags".}
#{.passL: "flags".}

cCompile(srcDir/"miniz.c")

cPlugin:
  import strutils
  
  proc onSymbol*(sym: var Symbol) {.exportc, dynlib.} =
    sym.name = sym.name.strip(chars = {'_'})

cImport(srcDir/"miniz.h", recurse = true)

I have to override Enum_minizh8 because, there is an issues in the type conversion.

But now I get the following error which I don't understand:

/usr/lib/nim/core/macros.nim(586, 12) Error: redefinition of 'Enum_minizh8'; previous declaration here: /home/jose/src/nimlang/miniz/miniz_wraper.nim(20, 14)

Why does it complains about redefinition if I am using cOverride?

If I remove line 20: ` defineEnum(Enum_minizh8)`, I get:

/home/jose/src/nimlang/miniz/miniz_wraper.nim(22, 40) Error: undeclared field: 'Enum_minizh8' for type system.int [declared in /usr/lib/nim/system.nim(26, 3)]

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