import {Parser} from “./state” import {SourceLocation} from “./locutil”
export class Node {
constructor(parser, pos, loc) { this.type = "" this.start = pos this.end = 0 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] }
}
// Start an AST node, attaching a start offset.
const pp = Parser.prototype
pp.startNode = function() {
return new Node(this, this.start, this.startLoc)
}
pp.startNodeAt = function(pos, loc) {
return new Node(this, pos, loc)
}
// Finish an AST node, adding `type` and `end` properties.
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
}
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)
}