// Copyright 2023 The Dawn & Tint Authors
//
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// 1. Redistributions of source code must retain the above copyright notice, this
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//    this list of conditions and the following disclaimer in the documentation
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//    this software without specific prior written permission.
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#include "src/dawn/node/binding/Split.h"

namespace wgpu::binding {

std::vector<std::string> Split(const std::string& s, char delim) {
    if (s.empty()) {
        return {};
    }

    std::vector<std::string> result;
    const size_t lastIndex = s.length() - 1;
    size_t startIndex = 0;
    size_t i = startIndex;

    while (i <= lastIndex) {
        if (s[i] == delim) {
            auto token = s.substr(startIndex, i - startIndex);
            if (!token.empty()) {  // Discard empty tokens
                result.push_back(token);
            }
            startIndex = i + 1;
        } else if (i == lastIndex) {
            auto token = s.substr(startIndex, i - startIndex + 1);
            if (!token.empty()) {  // Discard empty tokens
                result.push_back(token);
            }
        }
        ++i;
    }
    return result;
}

}  // namespace wgpu::binding
