Repository navigation
Expand file tree
/
Copy pathNodeUtils.ts
More file actions
147 lines (122 loc) · 3.89 KB
/
Copy pathNodeUtils.ts
File metadata and controls
147 lines (122 loc) · 3.89 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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
import * as estraverse from 'estraverse';
import { INode } from './interfaces/nodes/INode';
import { TNodeWithBlockStatement } from "./types/TNodeWithBlockStatement";
import { NodeType } from "./enums/NodeType";
import { Nodes } from "./Nodes";
import { Utils } from "./Utils";
export class NodeUtils {
/**
* @type {string[]}
*/
private static nodesWithBlockScope: string[] = [
NodeType.ArrowFunctionExpression,
NodeType.FunctionDeclaration,
NodeType.FunctionExpression,
NodeType.MethodDefinition,
NodeType.Program
];
/**
* @param node
*/
public static addXVerbatimPropertyToLiterals (node: INode): void {
estraverse.replace(node, {
enter: (node: INode, parentNode: INode): any => {
if (Nodes.isLiteralNode(node)) {
node['x-verbatim-property'] = node.raw;
}
}
});
}
/**
* @param blockScopeBody
* @param node
*/
public static appendNode (blockScopeBody: INode[], node: INode): void {
if (!NodeUtils.validateNode(node)) {
return;
}
blockScopeBody.push(node);
}
/**
* @param node
* @param index
* @returns {INode}
*/
public static getBlockStatementNodeByIndex (node: INode, index: number = 0): INode {
if (Nodes.isNodeHasBlockStatement(node)) {
if (node.body[index] === undefined) {
throw new ReferenceError(`Wrong index \`${index}\`. Block-statement body length is \`${node.body.length}\``);
}
return node.body[index];
}
throw new TypeError('The specified node have no a block-statement');
}
/**
* @param node
* @param depth
* @returns {INode}
*/
public static getBlockScopeOfNode (node: INode, depth: number = 0): TNodeWithBlockStatement {
let parentNode: INode = node.parentNode;
if (!parentNode) {
throw new ReferenceError('`parentNode` property of given node is `undefined`');
}
if (Nodes.isBlockStatementNode(parentNode)) {
if (!Utils.arrayContains(NodeUtils.nodesWithBlockScope, parentNode['parentNode'].type)) {
return NodeUtils.getBlockScopeOfNode(parentNode, depth);
} else if (depth > 0) {
return NodeUtils.getBlockScopeOfNode(parentNode, --depth);
}
return parentNode;
}
if (Nodes.isProgramNode(parentNode)) {
return parentNode;
}
return NodeUtils.getBlockScopeOfNode(parentNode);
}
/**
* @param blockScopeBody
* @param node
* @param index
*/
public static insertNodeAtIndex (blockScopeBody: INode[], node: INode, index: number): void {
if (!NodeUtils.validateNode(node)) {
return;
}
blockScopeBody.splice(index, 0, node);
}
/**
* @param node
*/
public static parentize (node: INode): void {
let isRootNode: boolean = true;
estraverse.replace(node, {
enter: (node: INode, parentNode: INode): any => {
Object.defineProperty(node, 'parentNode', {
configurable: true,
enumerable: true,
value: isRootNode ? Nodes.getProgramNode([node]) : parentNode || node,
writable: true
});
isRootNode = false;
}
});
}
/**
* @param blockScopeBody
* @param node
*/
public static prependNode (blockScopeBody: INode[], node: INode): void {
if (!NodeUtils.validateNode(node)) {
return;
}
blockScopeBody.unshift(node);
}
/**
* @param node
* @returns {boolean}
*/
private static validateNode (node: INode): boolean {
return !!node && node.hasOwnProperty('type');
}
}