58 lines
1.4 KiB
JavaScript
Executable File
58 lines
1.4 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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pp.startNode = function() {
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let node = new Node
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node.start = this.start
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if (this.options.locations)
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node.loc = new SourceLocation(this, this.startLoc)
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if (this.options.directSourceFile)
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node.sourceFile = this.options.directSourceFile
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if (this.options.ranges)
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node.range = [this.start, 0]
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return node
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}
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pp.startNodeAt = function(pos) {
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let node = new Node, start = pos
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if (this.options.locations) {
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node.loc = new SourceLocation(this, start[1])
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start = pos[0]
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}
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node.start = start
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if (this.options.directSourceFile)
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node.sourceFile = this.options.directSourceFile
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if (this.options.ranges)
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node.range = [start, 0]
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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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node.type = type
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node.end = this.lastTokEnd
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if (this.options.locations)
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node.loc.end = this.lastTokEndLoc
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if (this.options.ranges)
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node.range[1] = this.lastTokEnd
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return node
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}
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// Finish node at given position
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pp.finishNodeAt = function(node, type, pos) {
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if (this.options.locations) { node.loc.end = pos[1]; pos = pos[0] }
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node.type = type
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node.end = pos
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if (this.options.ranges)
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node.range[1] = pos
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return node
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}
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