diff options
author | Nevena Bojovic <nenabojov@gmail.com> | 2022-03-01 20:05:50 +0100 |
---|---|---|
committer | Nevena Bojovic <nenabojov@gmail.com> | 2022-03-01 20:05:50 +0100 |
commit | 291803c31f829fe0d32bb3207bc11def95a7408c (patch) | |
tree | c7d43107d79291b19d8c9eceefbe91c9f9a52acf /sandbox/testAppNevena/Front/node_modules/ajv/lib/compile/codegen/code.ts | |
parent | 1fa69862057db4db53cfda5be9c24b4228ef63f7 (diff) |
Urađena test aplikacija. Povezan front i back.
Diffstat (limited to 'sandbox/testAppNevena/Front/node_modules/ajv/lib/compile/codegen/code.ts')
-rw-r--r-- | sandbox/testAppNevena/Front/node_modules/ajv/lib/compile/codegen/code.ts | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/sandbox/testAppNevena/Front/node_modules/ajv/lib/compile/codegen/code.ts b/sandbox/testAppNevena/Front/node_modules/ajv/lib/compile/codegen/code.ts new file mode 100644 index 00000000..b1770197 --- /dev/null +++ b/sandbox/testAppNevena/Front/node_modules/ajv/lib/compile/codegen/code.ts @@ -0,0 +1,168 @@ +export abstract class _CodeOrName { + abstract readonly str: string + abstract readonly names: UsedNames + abstract toString(): string + abstract emptyStr(): boolean +} + +export const IDENTIFIER = /^[a-z$_][a-z$_0-9]*$/i + +export class Name extends _CodeOrName { + readonly str: string + constructor(s: string) { + super() + if (!IDENTIFIER.test(s)) throw new Error("CodeGen: name must be a valid identifier") + this.str = s + } + + toString(): string { + return this.str + } + + emptyStr(): boolean { + return false + } + + get names(): UsedNames { + return {[this.str]: 1} + } +} + +export class _Code extends _CodeOrName { + readonly _items: readonly CodeItem[] + private _str?: string + private _names?: UsedNames + + constructor(code: string | readonly CodeItem[]) { + super() + this._items = typeof code === "string" ? [code] : code + } + + toString(): string { + return this.str + } + + emptyStr(): boolean { + if (this._items.length > 1) return false + const item = this._items[0] + return item === "" || item === '""' + } + + get str(): string { + return (this._str ??= this._items.reduce((s: string, c: CodeItem) => `${s}${c}`, "")) + } + + get names(): UsedNames { + return (this._names ??= this._items.reduce((names: UsedNames, c) => { + if (c instanceof Name) names[c.str] = (names[c.str] || 0) + 1 + return names + }, {})) + } +} + +export type CodeItem = Name | string | number | boolean | null + +export type UsedNames = Record<string, number | undefined> + +export type Code = _Code | Name + +export type SafeExpr = Code | number | boolean | null + +export const nil = new _Code("") + +type CodeArg = SafeExpr | string | undefined + +export function _(strs: TemplateStringsArray, ...args: CodeArg[]): _Code { + const code: CodeItem[] = [strs[0]] + let i = 0 + while (i < args.length) { + addCodeArg(code, args[i]) + code.push(strs[++i]) + } + return new _Code(code) +} + +const plus = new _Code("+") + +export function str(strs: TemplateStringsArray, ...args: (CodeArg | string[])[]): _Code { + const expr: CodeItem[] = [safeStringify(strs[0])] + let i = 0 + while (i < args.length) { + expr.push(plus) + addCodeArg(expr, args[i]) + expr.push(plus, safeStringify(strs[++i])) + } + optimize(expr) + return new _Code(expr) +} + +export function addCodeArg(code: CodeItem[], arg: CodeArg | string[]): void { + if (arg instanceof _Code) code.push(...arg._items) + else if (arg instanceof Name) code.push(arg) + else code.push(interpolate(arg)) +} + +function optimize(expr: CodeItem[]): void { + let i = 1 + while (i < expr.length - 1) { + if (expr[i] === plus) { + const res = mergeExprItems(expr[i - 1], expr[i + 1]) + if (res !== undefined) { + expr.splice(i - 1, 3, res) + continue + } + expr[i++] = "+" + } + i++ + } +} + +function mergeExprItems(a: CodeItem, b: CodeItem): CodeItem | undefined { + if (b === '""') return a + if (a === '""') return b + if (typeof a == "string") { + if (b instanceof Name || a[a.length - 1] !== '"') return + if (typeof b != "string") return `${a.slice(0, -1)}${b}"` + if (b[0] === '"') return a.slice(0, -1) + b.slice(1) + return + } + if (typeof b == "string" && b[0] === '"' && !(a instanceof Name)) return `"${a}${b.slice(1)}` + return +} + +export function strConcat(c1: Code, c2: Code): Code { + return c2.emptyStr() ? c1 : c1.emptyStr() ? c2 : str`${c1}${c2}` +} + +// TODO do not allow arrays here +function interpolate(x?: string | string[] | number | boolean | null): SafeExpr | string { + return typeof x == "number" || typeof x == "boolean" || x === null + ? x + : safeStringify(Array.isArray(x) ? x.join(",") : x) +} + +export function stringify(x: unknown): Code { + return new _Code(safeStringify(x)) +} + +export function safeStringify(x: unknown): string { + return JSON.stringify(x) + .replace(/\u2028/g, "\\u2028") + .replace(/\u2029/g, "\\u2029") +} + +export function getProperty(key: Code | string | number): Code { + return typeof key == "string" && IDENTIFIER.test(key) ? new _Code(`.${key}`) : _`[${key}]` +} + +//Does best effort to format the name properly +export function getEsmExportName(key: Code | string | number): Code { + if (typeof key == "string" && IDENTIFIER.test(key)) { + return new _Code(`${key}`) + } + throw new Error(`CodeGen: invalid export name: ${key}, use explicit $id name mapping`) +} + +export function regexpCode(rx: RegExp): Code { + return new _Code(rx.toString()) +} |