UNPKG

@aurelia/expression-parser

Version:

[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT) [![TypeScript](https://img.shields.io/badge/%3C%2F%3E-TypeScript-%230074c1.svg)](http://www.typescriptlang.org/) [![CircleCI](https://circleci.com/

aurelia.io

aurelia/aurelia

49 lines (48 loc) • 4.05 kB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
// a record of the old Expression kind definition // there's no longer a need for it, though keep it just for good memory purpose // A thanks, and a token of appreciation to Fred // for his hard work during the early days of the expression parser, which underpins Aurelia // // eslint-disable-next-line @typescript-eslint/no-unused-vars const enum ExpressionKind { CallsFunction = 0b0000000000100_00000, // Calls a function (CallFunction, CallScope, CallMember, TaggedTemplate) -> needs a valid function object returning from its lefthandside's evaluate() HasAncestor = 0b0000000001000_00000, // Has an "ancestor" property, meaning the expression could climb up the context (only AccessThis, AccessScope and CallScope) IsPrimary = 0b0000000010000_00000, // Is a primary expression according to ES parsing rules IsLeftHandSide = 0b0000000100000_00000, // Is a left-hand side expression according to ES parsing rules, includes IsPrimary HasBind = 0b0000001000000_00000, // Has a bind() method (currently only BindingBehavior) HasUnbind = 0b0000010000000_00000, // Has an unbind() method (currentl only BindingBehavior and ValueConverter) IsAssignable = 0b0000100000000_00000, // Is an assignable expression according to ES parsing rules (only AccessScope, AccessMember, AccessKeyed ans Assign) IsLiteral = 0b0001000000000_00000, // Is literal expression (Primitive, Array, Object or Template) IsResource = 0b0010000000000_00000, // Is an Aurelia resource (ValueConverter or BindingBehavior) IsForDeclaration = 0b0100000000000_00000, // Is a For declaration (for..of, for..in -> currently only ForOfStatement) Type = 0b0000000000000_11111, // Type mask to uniquely identify each AST class (concrete types start below) // --------------------------------------------------------------------------------------------------------------------------- AccessThis = 0b0000000111000_00001, // HasAncestor AccessScope = 0b0000100111011_00010, // IsAssignable HasAncestor ArrayLiteral = 0b0001000110001_00011, // ObjectLiteral = 0b0001000110001_00100, // PrimitiveLiteral = 0b0001000110000_00101, // Template = 0b0001000110001_00110, // Unary = 0b0000000000001_00111, // CallScope = 0b0000000101101_01000, // HasAncestor CallsFunction CallMember = 0b0000000100100_01001, // CallsFunction CallFunction = 0b0000000100100_01010, // CallsFunction AccessMember = 0b0000100100011_01011, // IsAssignable AccessKeyed = 0b0000100100011_01100, // IsAssignable TaggedTemplate = 0b0000000100101_01101, // CallsFunction Binary = 0b0000000000001_01110, // Conditional = 0b0000000000001_11111, // Assign = 0b0000100000000_10000, // IsAssignable ArrowFunction = 0b0000000000000_10001, // ValueConverter = 0b0010010000001_10010, // BindingBehavior = 0b0010011000001_10011, // HtmlLiteral = 0b0000000000001_10100, // ArrayBindingPattern = 0b0100000000000_10101, // ObjectBindingPattern = 0b0100000000000_10110, // BindingIdentifier = 0b0100000000000_10111, // ForOfStatement = 0b0000011000001_11000, // Interpolation = 0b0000000000000_11001, // ArrayDestructuring = 0b0101100000000_11010, // IsAssignable ObjectDestructuring = 0b0110100000000_11011, // IsAssignable DestructuringAssignmentLeaf = 0b1000100000000_11100, // IsAssignable }