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