bindings/go/llvm/support.go

   1 //===- support.go - Bindings for support ----------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file defines bindings for the support component.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 package llvm
  14
  15 /*
  16 #include "llvm-c/Support.h"
  17 #include "SupportBindings.h"
  18 #include <stdlib.h>
  19 */
  20 import "C"
  21
  22 import (
  23         "errors"
  24         "unsafe"
  25 )
  26
  27 // Loads a dynamic library such that it may be used as an LLVM plugin.
  28 // See llvm::sys::DynamicLibrary::LoadLibraryPermanently.
  29 func LoadLibraryPermanently(lib string) error {
  30         var errstr *C.char
  31         libstr := C.CString(lib)
  32         defer C.free(unsafe.Pointer(libstr))
  33         C.LLVMLoadLibraryPermanently2(libstr, &errstr)
  34         if errstr != nil {
  35                 err := errors.New(C.GoString(errstr))
  36                 C.free(unsafe.Pointer(errstr))
  37                 return err
  38         }
  39         return nil
  40 }
  41
  42 // Parse the given arguments using the LLVM command line parser.
  43 // See llvm::cl::ParseCommandLineOptions.
  44 func ParseCommandLineOptions(args []string, overview string) {
  45         argstrs := make([]*C.char, len(args))
  46         for i, arg := range args {
  47                 argstrs[i] = C.CString(arg)
  48                 defer C.free(unsafe.Pointer(argstrs[i]))
  49         }
  50         overviewstr := C.CString(overview)
  51         defer C.free(unsafe.Pointer(overviewstr))
  52         C.LLVMParseCommandLineOptions(C.int(len(args)), &argstrs[0], overviewstr)
  53 }