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Filename : util-empty-scalar-position.js

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'use strict';

function emptyScalarPosition(offset, before, pos) {
    if (before) {
        if (pos === null)
            pos = before.length;
        for (let i = pos - 1; i >= 0; --i) {
            let st = before[i];
            switch (st.type) {
                case 'space':
                case 'comment':
                case 'newline':
                    offset -= st.source.length;
                    continue;
            }
            // Technically, an empty scalar is immediately after the last non-empty
            // node, but it's more useful to place it after any whitespace.
            st = before[++i];
            while (st?.type === 'space') {
                offset += st.source.length;
                st = before[++i];
            }
            break;
        }
    }
    return offset;
}

exports.emptyScalarPosition = emptyScalarPosition;