Function builtin_build_string

src/builtin/module_builtin_string.cpp:447–458

    }

    char * builtin_build_string ( const TBlock<void,StringBuilderWriter> & block, Context * context, LineInfoArg * at ) {
        StringBuilderWriter writer;
        vec4f args[1];
        args[0] = cast<StringBuilderWriter *>::from(&writer);
        context->invoke(block, args, nullptr, at);
        auto length = writer.tellp();
        if ( length ) {
            return context->allocateString(writer.c_str(), uint32_t(length),at);
        } else {
            return nullptr;
        }
    }

    vec4f builtin_write_string ( Context &, SimNode_CallBase * call, vec4f * args ) {
        StringBuilderWriter * writer = cast<StringBuilderWriter *>::to(args[0]);