You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
51 lines
1.2 KiB
JavaScript
51 lines
1.2 KiB
JavaScript
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)
|
|
}
|