154 lines
5.5 KiB
JavaScript
154 lines
5.5 KiB
JavaScript
'use strict';
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var Collection = require('../nodes/Collection.js');
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var identity = require('../nodes/identity.js');
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var stringify = require('./stringify.js');
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var stringifyComment = require('./stringifyComment.js');
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function stringifyCollection(collection, ctx, options) {
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const flow = ctx.inFlow ?? collection.flow;
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const stringify = flow ? stringifyFlowCollection : stringifyBlockCollection;
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return stringify(collection, ctx, options);
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}
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function stringifyBlockCollection({ comment, items }, ctx, { blockItemPrefix, flowChars, itemIndent, onChompKeep, onComment }) {
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const { indent, options: { commentString } } = ctx;
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const itemCtx = Object.assign({}, ctx, { indent: itemIndent, type: null });
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let chompKeep = false; // flag for the preceding node's status
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const lines = [];
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for (let i = 0; i < items.length; ++i) {
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const item = items[i];
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let comment = null;
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if (identity.isNode(item)) {
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if (!chompKeep && item.spaceBefore)
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lines.push('');
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addCommentBefore(ctx, lines, item.commentBefore, chompKeep);
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if (item.comment)
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comment = item.comment;
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}
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else if (identity.isPair(item)) {
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const ik = identity.isNode(item.key) ? item.key : null;
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if (ik) {
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if (!chompKeep && ik.spaceBefore)
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lines.push('');
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addCommentBefore(ctx, lines, ik.commentBefore, chompKeep);
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}
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}
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chompKeep = false;
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let str = stringify.stringify(item, itemCtx, () => (comment = null), () => (chompKeep = true));
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if (comment)
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str += stringifyComment.lineComment(str, itemIndent, commentString(comment));
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if (chompKeep && comment)
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chompKeep = false;
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lines.push(blockItemPrefix + str);
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}
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let str;
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if (lines.length === 0) {
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str = flowChars.start + flowChars.end;
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}
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else {
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str = lines[0];
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for (let i = 1; i < lines.length; ++i) {
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const line = lines[i];
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str += line ? `\n${indent}${line}` : '\n';
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}
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}
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if (comment) {
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str += '\n' + stringifyComment.indentComment(commentString(comment), indent);
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if (onComment)
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onComment();
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}
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else if (chompKeep && onChompKeep)
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onChompKeep();
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return str;
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}
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function stringifyFlowCollection({ comment, items }, ctx, { flowChars, itemIndent, onComment }) {
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const { indent, indentStep, flowCollectionPadding: fcPadding, options: { commentString } } = ctx;
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itemIndent += indentStep;
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const itemCtx = Object.assign({}, ctx, {
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indent: itemIndent,
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inFlow: true,
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type: null
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});
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let reqNewline = false;
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let linesAtValue = 0;
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const lines = [];
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for (let i = 0; i < items.length; ++i) {
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const item = items[i];
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let comment = null;
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if (identity.isNode(item)) {
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if (item.spaceBefore)
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lines.push('');
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addCommentBefore(ctx, lines, item.commentBefore, false);
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if (item.comment)
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comment = item.comment;
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}
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else if (identity.isPair(item)) {
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const ik = identity.isNode(item.key) ? item.key : null;
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if (ik) {
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if (ik.spaceBefore)
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lines.push('');
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addCommentBefore(ctx, lines, ik.commentBefore, false);
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if (ik.comment)
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reqNewline = true;
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}
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const iv = identity.isNode(item.value) ? item.value : null;
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if (iv) {
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if (iv.comment)
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comment = iv.comment;
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if (iv.commentBefore)
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reqNewline = true;
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}
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else if (item.value == null && ik && ik.comment) {
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comment = ik.comment;
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}
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}
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if (comment)
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reqNewline = true;
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let str = stringify.stringify(item, itemCtx, () => (comment = null));
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if (i < items.length - 1)
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str += ',';
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if (comment)
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str += stringifyComment.lineComment(str, itemIndent, commentString(comment));
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if (!reqNewline && (lines.length > linesAtValue || str.includes('\n')))
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reqNewline = true;
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lines.push(str);
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linesAtValue = lines.length;
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}
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let str;
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const { start, end } = flowChars;
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if (lines.length === 0) {
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str = start + end;
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}
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else {
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if (!reqNewline) {
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const len = lines.reduce((sum, line) => sum + line.length + 2, 2);
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reqNewline = len > Collection.Collection.maxFlowStringSingleLineLength;
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}
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if (reqNewline) {
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str = start;
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for (const line of lines)
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str += line ? `\n${indentStep}${indent}${line}` : '\n';
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str += `\n${indent}${end}`;
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}
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else {
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str = `${start}${fcPadding}${lines.join(' ')}${fcPadding}${end}`;
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}
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}
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if (comment) {
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str += stringifyComment.lineComment(str, indent, commentString(comment));
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if (onComment)
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onComment();
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}
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return str;
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}
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function addCommentBefore({ indent, options: { commentString } }, lines, comment, chompKeep) {
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if (comment && chompKeep)
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comment = comment.replace(/^\n+/, '');
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if (comment) {
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const ic = stringifyComment.indentComment(commentString(comment), indent);
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lines.push(ic.trimStart()); // Avoid double indent on first line
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}
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}
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exports.stringifyCollection = stringifyCollection;
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