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Mixed progress, vol. 2

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This commit is contained in:
Bán Dénes 2020-07-17 23:20:49 +02:00
parent c3d7643371
commit 5a380fa58c
7 changed files with 192 additions and 157 deletions
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28
src/assert.js
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@ -106,7 +106,7 @@ const extend_pair = exports.extend_pair = (to, from) => {
} else return from
}
exports.extend = (...args) => {
const extend = exports.extend = (...args) => {
let res = args[0]
for (const arg of args) {
if (res == arg) continue
@ -115,18 +115,22 @@ exports.extend = (...args) => {
return res
}
const inherit = exports.inherit = (config, name_prefix, name, set) => {
let result = u.deepcopy(config)
if (config.extends !== undefined) {
let list = config.extends
if (type(list) !== 'array') list = [list]
for (const item of list) {
const other = set[item]
assert(other, `Field "${name_prefix}.${name}" does not name a valid target!`)
result = extend_pair(inherit(other, name_prefix, config.extends, set), result)
const inherit = exports.inherit = (name_prefix, name, set) => {
let result = u.deepcopy(set[name])
if (result.extends !== undefined) {
let candidates = [name]
const list = []
while (candidates.length) {
const item = candidates.shift()
const other = u.deepcopy(set[item])
assert(other, `"${item}" (reached from "${name_prefix}.${name}.extends") does not name a valid target!`)
let parents = other.extends || []
if (type(parents) !== 'array') parents = [parents]
candidates = candidates.concat(parents)
delete other.extends
list.unshift(other)
}
delete result.extends
result = extend.apply(this, list)
}
return result
}