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