51 lines
1.6 KiB
JavaScript
51 lines
1.6 KiB
JavaScript
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'use strict';
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module.exports = function(acorn) {
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var tt = acorn.tokTypes;
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var pp = acorn.Parser.prototype;
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// this is the same parseObj that acorn has with...
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function parseObj(isPattern, refDestructuringErrors) {
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let node = this.startNode(), first = true, propHash = {}
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node.properties = []
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this.next()
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while (!this.eat(tt.braceR)) {
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if (!first) {
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this.expect(tt.comma)
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if (this.afterTrailingComma(tt.braceR)) break
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} else first = false
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let prop = this.startNode(), isGenerator, startPos, startLoc
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if (this.options.ecmaVersion >= 6) {
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// ...the spread logic borrowed from babylon :)
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if (this.type === tt.ellipsis) {
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prop = this.parseSpread()
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prop.type = isPattern ? "RestProperty" : "SpreadProperty"
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node.properties.push(prop)
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continue
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}
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prop.method = false
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prop.shorthand = false
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if (isPattern || refDestructuringErrors) {
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startPos = this.start
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startLoc = this.startLoc
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}
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if (!isPattern)
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isGenerator = this.eat(tt.star)
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}
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this.parsePropertyName(prop)
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this.parsePropertyValue(prop, isPattern, isGenerator, startPos, startLoc, refDestructuringErrors)
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this.checkPropClash(prop, propHash)
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node.properties.push(this.finishNode(prop, "Property"))
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}
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return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression")
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}
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acorn.plugins.objectSpread = function objectSpreadPlugin(instance) {
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pp.parseObj = parseObj;
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};
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return acorn;
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};
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