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import { anchorIsValid } from '../doc/anchors.js';
import { isPair, isAlias, isNode, isScalar, isCollection } from '../nodes/Node.js';
import { stringifyComment } from './stringifyComment.js';
import { stringifyString } from './stringifyString.js';
function createStringifyContext(doc, options) {
const opt = Object.assign({
blockQuote: true,
commentString: stringifyComment,
defaultKeyType: null,
defaultStringType: 'PLAIN',
directives: null,
doubleQuotedAsJSON: false,
doubleQuotedMinMultiLineLength: 40,
falseStr: 'false',
indentSeq: true,
lineWidth: 80,
minContentWidth: 20,
nullStr: 'null',
simpleKeys: false,
singleQuote: null,
trueStr: 'true',
verifyAliasOrder: true
}, doc.schema.toStringOptions, options);
let inFlow;
switch (opt.collectionStyle) {
case 'block':
inFlow = false;
break;
case 'flow':
inFlow = true;
break;
default:
inFlow = null;
}
return {
anchors: new Set(),
doc,
indent: '',
indentStep: typeof opt.indent === 'number' ? ' '.repeat(opt.indent) : ' ',
inFlow,
options: opt
};
}
function getTagObject(tags, item) {
if (item.tag) {
const match = tags.filter(t => t.tag === item.tag);
if (match.length > 0)
return match.find(t => t.format === item.format) ?? match[0];
}
let tagObj = undefined;
let obj;
if (isScalar(item)) {
obj = item.value;
const match = tags.filter(t => t.identify?.(obj));
tagObj =
match.find(t => t.format === item.format) ?? match.find(t => !t.format);
}
else {
obj = item;
tagObj = tags.find(t => t.nodeClass && obj instanceof t.nodeClass);
}
if (!tagObj) {
const name = obj?.constructor?.name ?? typeof obj;
throw new Error(`Tag not resolved for ${name} value`);
}
return tagObj;
}
// needs to be called before value stringifier to allow for circular anchor refs
function stringifyProps(node, tagObj, { anchors, doc }) {
if (!doc.directives)
return '';
const props = [];
const anchor = (isScalar(node) || isCollection(node)) && node.anchor;
if (anchor && anchorIsValid(anchor)) {
anchors.add(anchor);
props.push(`&${anchor}`);
}
const tag = node.tag ? node.tag : tagObj.default ? null : tagObj.tag;
if (tag)
props.push(doc.directives.tagString(tag));
return props.join(' ');
}
function stringify(item, ctx, onComment, onChompKeep) {
if (isPair(item))
return item.toString(ctx, onComment, onChompKeep);
if (isAlias(item)) {
if (ctx.doc.directives)
return item.toString(ctx);
if (ctx.resolvedAliases?.has(item)) {
throw new TypeError(`Cannot stringify circular structure without alias nodes`);
}
else {
if (ctx.resolvedAliases)
ctx.resolvedAliases.add(item);
else
ctx.resolvedAliases = new Set([item]);
item = item.resolve(ctx.doc);
}
}
let tagObj = undefined;
const node = isNode(item)
? item
: ctx.doc.createNode(item, { onTagObj: o => (tagObj = o) });
if (!tagObj)
tagObj = getTagObject(ctx.doc.schema.tags, node);
const props = stringifyProps(node, tagObj, ctx);
if (props.length > 0)
ctx.indentAtStart = (ctx.indentAtStart ?? 0) + props.length + 1;
const str = typeof tagObj.stringify === 'function'
? tagObj.stringify(node, ctx, onComment, onChompKeep)
: isScalar(node)
? stringifyString(node, ctx, onComment, onChompKeep)
: node.toString(ctx, onComment, onChompKeep);
if (!props)
return str;
return isScalar(node) || str[0] === '{' || str[0] === '['
? `${props} ${str}`
: `${props}\n${ctx.indent}${str}`;
}
export { createStringifyContext, stringify };
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