private String conditionallyEscapeHeader()

in codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/integration/HttpBindingProtocolGenerator.java [1002:1055]
47 lines of code
8 McCabe index (conditional complexity)

    private String conditionallyEscapeHeader(
            GenerationContext context,
            GoWriter writer,
            MemberShape memberShape,
            String operand
    ) {
        var targetShape = context.getModel().expectShape(memberShape.getTarget());
        if (!targetShape.isStringShape()) {
            return operand;
        }
        if (targetShape.hasTrait(MediaTypeTrait.class)) {
            return conditionallyBase64Encode(context, writer, targetShape, operand);
        }

        writer.pushState();

        var returnVar = "escaped";
        var pointableIndex = GoPointableIndex.of(context.getModel());
        var shouldDereference = pointableIndex.isDereferencable(memberShape);
        if (shouldDereference) {
            operand = CodegenUtils.getAsValueIfDereferencable(pointableIndex, memberShape, operand);
            writer.putContext("escapedVar", "escapedVal");
            returnVar = "escapedPtr";
        } else {
            writer.putContext("escapedVar", returnVar);
        }
        writer.putContext("returnVar", returnVar);

        if (targetShape.hasTrait(EnumTrait.class)) {
            operand = "string(" + operand + ")";
        }

        writer.putContext("value", operand);
        writer.putContext("quoteValue", SymbolUtils.createValueSymbolBuilder(
                "Quote", SmithyGoDependency.STRCONV).build());
        writer.putContext("indexOf", SymbolUtils.createValueSymbolBuilder(
                "Index", SmithyGoDependency.STRINGS).build());
        writer.putContext("ptrString", SymbolUtils.createValueSymbolBuilder(
                "String", SmithyGoDependency.SMITHY_PTR).build());

        writer.write("""
                $escapedVar:L := $value:L
                if $indexOf:T($value:L, `,`) != -1 || $indexOf:T($value:L, `"`) != -1 {
                    $escapedVar:L = $quoteValue:T($value:L)
                }
                """);
        if (shouldDereference) {
            writer.write("$returnVar:L := $ptrString:T($escapedVar:L)");
        }

        writer.popState();

        return returnVar;
    }