cdk8s
Version:
This is the core library of Cloud Development Kit (CDK) for Kubernetes (cdk8s). cdk8s apps synthesize into standard Kubernetes manifests which can be applied to any Kubernetes cluster.
208 lines (205 loc) • 8.78 kB
JavaScript
import { isPair } from '../nodes/identity.js';
import { Pair } from '../nodes/Pair.js';
import { YAMLMap } from '../nodes/YAMLMap.js';
import { YAMLSeq } from '../nodes/YAMLSeq.js';
import { resolveEnd } from './resolve-end.js';
import { resolveProps } from './resolve-props.js';
import { containsNewline } from './util-contains-newline.js';
import { mapIncludes } from './util-map-includes.js';
const blockMsg = 'Block collections are not allowed within flow collections';
const isBlock = (token) => token && (token.type === 'block-map' || token.type === 'block-seq');
function resolveFlowCollection({ composeNode, composeEmptyNode }, ctx, fc, onError, tag) {
const isMap = fc.start.source === '{';
const fcName = isMap ? 'flow map' : 'flow sequence';
const NodeClass = (tag?.nodeClass ?? (isMap ? YAMLMap : YAMLSeq));
const coll = new NodeClass(ctx.schema);
coll.flow = true;
const atRoot = ctx.atRoot;
if (atRoot)
ctx.atRoot = false;
if (ctx.atKey)
ctx.atKey = false;
let offset = fc.offset + fc.start.source.length;
for (let i = 0; i < fc.items.length; ++i) {
const collItem = fc.items[i];
const { start, key, sep, value } = collItem;
const props = resolveProps(start, {
flow: fcName,
indicator: 'explicit-key-ind',
next: key ?? sep?.[0],
offset,
onError,
parentIndent: fc.indent,
startOnNewline: false
});
if (!props.found) {
if (!props.anchor && !props.tag && !sep && !value) {
if (i === 0 && props.comma)
onError(props.comma, 'UNEXPECTED_TOKEN', `Unexpected , in ${fcName}`);
else if (i < fc.items.length - 1)
onError(props.start, 'UNEXPECTED_TOKEN', `Unexpected empty item in ${fcName}`);
if (props.comment) {
if (coll.comment)
coll.comment += '\n' + props.comment;
else
coll.comment = props.comment;
}
offset = props.end;
continue;
}
if (!isMap && ctx.options.strict && containsNewline(key))
onError(key, // checked by containsNewline()
'MULTILINE_IMPLICIT_KEY', 'Implicit keys of flow sequence pairs need to be on a single line');
}
if (i === 0) {
if (props.comma)
onError(props.comma, 'UNEXPECTED_TOKEN', `Unexpected , in ${fcName}`);
}
else {
if (!props.comma)
onError(props.start, 'MISSING_CHAR', `Missing , between ${fcName} items`);
if (props.comment) {
let prevItemComment = '';
loop: for (const st of start) {
switch (st.type) {
case 'comma':
case 'space':
break;
case 'comment':
prevItemComment = st.source.substring(1);
break loop;
default:
break loop;
}
}
if (prevItemComment) {
let prev = coll.items[coll.items.length - 1];
if (isPair(prev))
prev = prev.value ?? prev.key;
if (prev.comment)
prev.comment += '\n' + prevItemComment;
else
prev.comment = prevItemComment;
props.comment = props.comment.substring(prevItemComment.length + 1);
}
}
}
if (!isMap && !sep && !props.found) {
// item is a value in a seq
// → key & sep are empty, start does not include ? or :
const valueNode = value
? composeNode(ctx, value, props, onError)
: composeEmptyNode(ctx, props.end, sep, null, props, onError);
coll.items.push(valueNode);
offset = valueNode.range[2];
if (isBlock(value))
onError(valueNode.range, 'BLOCK_IN_FLOW', blockMsg);
}
else {
// item is a key+value pair
// key value
ctx.atKey = true;
const keyStart = props.end;
const keyNode = key
? composeNode(ctx, key, props, onError)
: composeEmptyNode(ctx, keyStart, start, null, props, onError);
if (isBlock(key))
onError(keyNode.range, 'BLOCK_IN_FLOW', blockMsg);
ctx.atKey = false;
// value properties
const valueProps = resolveProps(sep ?? [], {
flow: fcName,
indicator: 'map-value-ind',
next: value,
offset: keyNode.range[2],
onError,
parentIndent: fc.indent,
startOnNewline: false
});
if (valueProps.found) {
if (!isMap && !props.found && ctx.options.strict) {
if (sep)
for (const st of sep) {
if (st === valueProps.found)
break;
if (st.type === 'newline') {
onError(st, 'MULTILINE_IMPLICIT_KEY', 'Implicit keys of flow sequence pairs need to be on a single line');
break;
}
}
if (props.start < valueProps.found.offset - 1024)
onError(valueProps.found, 'KEY_OVER_1024_CHARS', 'The : indicator must be at most 1024 chars after the start of an implicit flow sequence key');
}
}
else if (value) {
if ('source' in value && value.source?.[0] === ':')
onError(value, 'MISSING_CHAR', `Missing space after : in ${fcName}`);
else
onError(valueProps.start, 'MISSING_CHAR', `Missing , or : between ${fcName} items`);
}
// value value
const valueNode = value
? composeNode(ctx, value, valueProps, onError)
: valueProps.found
? composeEmptyNode(ctx, valueProps.end, sep, null, valueProps, onError)
: null;
if (valueNode) {
if (isBlock(value))
onError(valueNode.range, 'BLOCK_IN_FLOW', blockMsg);
}
else if (valueProps.comment) {
if (keyNode.comment)
keyNode.comment += '\n' + valueProps.comment;
else
keyNode.comment = valueProps.comment;
}
const pair = new Pair(keyNode, valueNode);
if (ctx.options.keepSourceTokens)
pair.srcToken = collItem;
if (isMap) {
const map = coll;
if (mapIncludes(ctx, map.items, keyNode))
onError(keyStart, 'DUPLICATE_KEY', 'Map keys must be unique');
map.items.push(pair);
}
else {
const map = new YAMLMap(ctx.schema);
map.flow = true;
map.items.push(pair);
const endRange = (valueNode ?? keyNode).range;
map.range = [keyNode.range[0], endRange[1], endRange[2]];
coll.items.push(map);
}
offset = valueNode ? valueNode.range[2] : valueProps.end;
}
}
const expectedEnd = isMap ? '}' : ']';
const [ce, ...ee] = fc.end;
let cePos = offset;
if (ce?.source === expectedEnd)
cePos = ce.offset + ce.source.length;
else {
const name = fcName[0].toUpperCase() + fcName.substring(1);
const msg = atRoot
? `${name} must end with a ${expectedEnd}`
: `${name} in block collection must be sufficiently indented and end with a ${expectedEnd}`;
onError(offset, atRoot ? 'MISSING_CHAR' : 'BAD_INDENT', msg);
if (ce && ce.source.length !== 1)
ee.unshift(ce);
}
if (ee.length > 0) {
const end = resolveEnd(ee, cePos, ctx.options.strict, onError);
if (end.comment) {
if (coll.comment)
coll.comment += '\n' + end.comment;
else
coll.comment = end.comment;
}
coll.range = [fc.offset, cePos, end.offset];
}
else {
coll.range = [fc.offset, cePos, cePos];
}
return coll;
}
export { resolveFlowCollection };