Jacques Lucke
eedcf1876a
This moves all multi-function related code in the `functions` module into a new `multi_function` namespace. This is similar to how there is a `lazy_function` namespace. The main benefit of this is that many types names that were prefixed with `MF` (for "multi function") can be simplified. There is also a common shorthand for the `multi_function` namespace: `mf`. This is also similar to lazy-functions where the shortened namespace is called `lf`.
42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "BLI_string_utf8.h"
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#include "node_function_util.hh"
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namespace blender::nodes::node_fn_slice_string_cc {
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static void node_declare(NodeDeclarationBuilder &b)
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{
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b.add_input<decl::String>(N_("String"));
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b.add_input<decl::Int>(N_("Position"));
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b.add_input<decl::Int>(N_("Length")).min(0).default_value(10);
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b.add_output<decl::String>(N_("String"));
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}
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static void node_build_multi_function(NodeMultiFunctionBuilder &builder)
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{
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static auto slice_fn = mf::build::SI3_SO<std::string, int, int, std::string>(
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"Slice", [](const std::string &str, int a, int b) {
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const int len = BLI_strlen_utf8(str.c_str());
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const int start = BLI_str_utf8_offset_from_index(str.c_str(), std::clamp(a, 0, len));
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const int end = BLI_str_utf8_offset_from_index(str.c_str(), std::clamp(a + b, 0, len));
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return str.substr(start, std::max<int>(end - start, 0));
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});
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builder.set_matching_fn(&slice_fn);
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}
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} // namespace blender::nodes::node_fn_slice_string_cc
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void register_node_type_fn_slice_string()
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{
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namespace file_ns = blender::nodes::node_fn_slice_string_cc;
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static bNodeType ntype;
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fn_node_type_base(&ntype, FN_NODE_SLICE_STRING, "Slice String", NODE_CLASS_CONVERTER);
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ntype.declare = file_ns::node_declare;
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ntype.build_multi_function = file_ns::node_build_multi_function;
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nodeRegisterType(&ntype);
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}
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