127 lines
4.5 KiB
JavaScript
127 lines
4.5 KiB
JavaScript
'use strict';
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var Node = require('../nodes/Node.js');
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var Scalar = require('../nodes/Scalar.js');
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var stringify = require('./stringify.js');
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var stringifyComment = require('./stringifyComment.js');
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function stringifyPair({ key, value }, ctx, onComment, onChompKeep) {
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const { allNullValues, doc, indent, indentStep, options: { commentString, indentSeq, simpleKeys } } = ctx;
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let keyComment = (Node.isNode(key) && key.comment) || null;
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if (simpleKeys) {
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if (keyComment) {
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throw new Error('With simple keys, key nodes cannot have comments');
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}
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if (Node.isCollection(key)) {
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const msg = 'With simple keys, collection cannot be used as a key value';
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throw new Error(msg);
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}
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}
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let explicitKey = !simpleKeys &&
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(!key ||
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(keyComment && value == null && !ctx.inFlow) ||
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Node.isCollection(key) ||
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(Node.isScalar(key)
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? key.type === Scalar.Scalar.BLOCK_FOLDED || key.type === Scalar.Scalar.BLOCK_LITERAL
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: typeof key === 'object'));
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ctx = Object.assign({}, ctx, {
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allNullValues: false,
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implicitKey: !explicitKey && (simpleKeys || !allNullValues),
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indent: indent + indentStep
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});
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let keyCommentDone = false;
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let chompKeep = false;
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let str = stringify.stringify(key, ctx, () => (keyCommentDone = true), () => (chompKeep = true));
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if (!explicitKey && !ctx.inFlow && str.length > 1024) {
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if (simpleKeys)
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throw new Error('With simple keys, single line scalar must not span more than 1024 characters');
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explicitKey = true;
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}
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if (ctx.inFlow) {
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if (allNullValues || value == null) {
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if (keyCommentDone && onComment)
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onComment();
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return str === '' ? '?' : explicitKey ? `? ${str}` : str;
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}
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}
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else if ((allNullValues && !simpleKeys) || (value == null && explicitKey)) {
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str = `? ${str}`;
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if (keyComment && !keyCommentDone) {
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str += stringifyComment.lineComment(str, ctx.indent, commentString(keyComment));
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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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if (keyCommentDone)
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keyComment = null;
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if (explicitKey) {
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if (keyComment)
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str += stringifyComment.lineComment(str, ctx.indent, commentString(keyComment));
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str = `? ${str}\n${indent}:`;
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}
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else {
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str = `${str}:`;
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if (keyComment)
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str += stringifyComment.lineComment(str, ctx.indent, commentString(keyComment));
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}
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let vcb = '';
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let valueComment = null;
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if (Node.isNode(value)) {
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if (value.spaceBefore)
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vcb = '\n';
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if (value.commentBefore) {
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const cs = commentString(value.commentBefore);
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vcb += `\n${stringifyComment.indentComment(cs, ctx.indent)}`;
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}
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valueComment = value.comment;
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}
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else if (value && typeof value === 'object') {
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value = doc.createNode(value);
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}
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ctx.implicitKey = false;
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if (!explicitKey && !keyComment && Node.isScalar(value))
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ctx.indentAtStart = str.length + 1;
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chompKeep = false;
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if (!indentSeq &&
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indentStep.length >= 2 &&
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!ctx.inFlow &&
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!explicitKey &&
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Node.isSeq(value) &&
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!value.flow &&
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!value.tag &&
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!value.anchor) {
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// If indentSeq === false, consider '- ' as part of indentation where possible
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ctx.indent = ctx.indent.substr(2);
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}
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let valueCommentDone = false;
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const valueStr = stringify.stringify(value, ctx, () => (valueCommentDone = true), () => (chompKeep = true));
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let ws = ' ';
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if (vcb || keyComment) {
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if (valueStr === '' && !ctx.inFlow)
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ws = vcb === '\n' ? '\n\n' : vcb;
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else
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ws = `${vcb}\n${ctx.indent}`;
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}
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else if (!explicitKey && Node.isCollection(value)) {
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const flow = valueStr[0] === '[' || valueStr[0] === '{';
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if (!flow || valueStr.includes('\n'))
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ws = `\n${ctx.indent}`;
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}
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else if (valueStr === '' || valueStr[0] === '\n')
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ws = '';
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str += ws + valueStr;
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if (ctx.inFlow) {
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if (valueCommentDone && onComment)
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onComment();
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}
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else if (valueComment && !valueCommentDone) {
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str += stringifyComment.lineComment(str, ctx.indent, commentString(valueComment));
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}
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else if (chompKeep && onChompKeep) {
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onChompKeep();
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}
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return str;
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}
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exports.stringifyPair = stringifyPair;
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