BindingString toBindingString()

in lib/src/code_generator/func.dart [82:160]
66 lines of code
17 McCabe index (conditional complexity)

  BindingString toBindingString(Writer w) {
    final s = StringBuffer();
    final enclosingFuncName = name;
    final funcVarName = w.wrapperLevelUniqueNamer.makeUnique('_$name');
    final funcPointerName = w.wrapperLevelUniqueNamer.makeUnique('_${name}Ptr');

    if (dartDoc != null) {
      s.write(makeDartDoc(dartDoc!));
    }
    // Resolve name conflicts in function parameter names.
    final paramNamer = UniqueNamer({});
    for (final p in functionType.parameters) {
      p.name = paramNamer.makeUnique(p.name);
    }
    // Write enclosing function.
    if (w.dartBool &&
        functionType.returnType.getBaseTypealiasType().broadType ==
            BroadType.Boolean) {
      // Use bool return type in enclosing function.
      s.write('bool $enclosingFuncName(\n');
    } else {
      s.write(
          '${functionType.returnType.getDartType(w)} $enclosingFuncName(\n');
    }
    for (final p in functionType.parameters) {
      if (w.dartBool &&
          p.type.getBaseTypealiasType().broadType == BroadType.Boolean) {
        // Use bool parameter type in enclosing function.
        s.write('  bool ${p.name},\n');
      } else {
        s.write('  ${p.type.getDartType(w)} ${p.name},\n');
      }
    }
    s.write(') {\n');
    s.write('return $funcVarName');

    s.write('(\n');
    for (final p in functionType.parameters) {
      if (w.dartBool &&
          p.type.getBaseTypealiasType().broadType == BroadType.Boolean) {
        // Convert bool parameter to int before calling.
        s.write('    ${p.name}?1:0,\n');
      } else {
        s.write('    ${p.name},\n');
      }
    }
    if (w.dartBool && functionType.returnType.broadType == BroadType.Boolean) {
      // Convert int return type to bool.
      s.write('  )!=0;\n');
    } else {
      s.write('  );\n');
    }
    s.write('}\n');

    final cType = exposeFunctionTypedefs
        ? _exposedCFunctionTypealias!.name
        : functionType.getCType(w, writeArgumentNames: false);
    final dartType = exposeFunctionTypedefs
        ? _exposedDartFunctionTypealias!.name
        : functionType.getDartType(w, writeArgumentNames: false);

    if (exposeSymbolAddress) {
      // Add to SymbolAddress in writer.
      w.symbolAddressWriter.addSymbol(
        type:
            '${w.ffiLibraryPrefix}.Pointer<${w.ffiLibraryPrefix}.NativeFunction<$cType>>',
        name: name,
        ptrName: funcPointerName,
      );
    }
    // Write function pointer.
    s.write(
        "late final $funcPointerName = ${w.lookupFuncIdentifier}<${w.ffiLibraryPrefix}.NativeFunction<$cType>>('$originalName');\n");
    final isLeafString = isLeaf ? 'isLeaf:true' : '';
    s.write(
        'late final $funcVarName = $funcPointerName.asFunction<$dartType>($isLeafString);\n\n');

    return BindingString(type: BindingStringType.func, string: s.toString());
  }