63 lines
1.4 KiB
JavaScript
Executable File
63 lines
1.4 KiB
JavaScript
Executable File
import { Parser } from "./state";
|
|
import { SourceLocation } from "./location";
|
|
|
|
// Start an AST node, attaching a start offset.
|
|
|
|
const pp = Parser.prototype;
|
|
|
|
export class Node {
|
|
constructor(parser, pos, loc) {
|
|
this.type = "";
|
|
this.start = pos;
|
|
this.end = 0;
|
|
|
|
if (parser) {
|
|
if (parser.options.locations) {
|
|
this.loc = new SourceLocation(parser, loc);
|
|
}
|
|
|
|
if (parser.options.directSourceFile) {
|
|
this.sourceFile = parser.options.directSourceFile;
|
|
}
|
|
|
|
if (parser.options.ranges) {
|
|
this.range = [pos, 0];
|
|
}
|
|
}
|
|
}
|
|
|
|
__clone() {
|
|
var node2 = new Node;
|
|
for (var key in this) node2[key] = this[key];
|
|
return node2;
|
|
}
|
|
}
|
|
|
|
pp.startNode = function () {
|
|
return new Node(this, this.start, this.startLoc);
|
|
};
|
|
|
|
pp.startNodeAt = function (pos, loc) {
|
|
return new Node(this, pos, loc);
|
|
};
|
|
|
|
function finishNodeAt(node, type, pos, loc) {
|
|
node.type = type;
|
|
node.end = pos;
|
|
if (this.options.locations) node.loc.end = loc;
|
|
if (this.options.ranges) node.range[1] = pos;
|
|
return node;
|
|
}
|
|
|
|
// Finish an AST node, adding `type` and `end` properties.
|
|
|
|
pp.finishNode = function (node, type) {
|
|
return finishNodeAt.call(this, node, type, this.lastTokEnd, this.lastTokEndLoc);
|
|
};
|
|
|
|
// Finish node at given position
|
|
|
|
pp.finishNodeAt = function (node, type, pos, loc) {
|
|
return finishNodeAt.call(this, node, type, pos, loc);
|
|
};
|