Method emitObjectPattern

compiler_expr.go:3345–3386

(pattern *ast.ObjectPattern, emitAssign func(target, init compiledExpr), putOnStack bool)

}

func (c *compiler) emitObjectPattern(pattern *ast.ObjectPattern, emitAssign func(target, init compiledExpr), putOnStack bool) {
	if pattern.Rest != nil {
		c.emit(createDestructSrc)
	} else {
		c.emit(checkObjectCoercible)
	}
	for _, prop := range pattern.Properties {
		switch prop := prop.(type) {
		case *ast.PropertyShort:
			c.emit(dup)
			emitAssign(c.compileIdentifierExpression(&prop.Name), c.compilePatternInitExpr(func() {
				c.emit(getProp(prop.Name.Name))
			}, prop.Initializer, prop.Idx0()))
		case *ast.PropertyKeyed:
			c.emit(dup)
			c.compileExpression(prop.Key).emitGetter(true)
			c.emit(_toPropertyKey{})
			var target ast.Expression
			var initializer ast.Expression
			if e, ok := prop.Value.(*ast.AssignExpression); ok {
				target = e.Left
				initializer = e.Right
			} else {
				target = prop.Value
			}
			c.emitAssign(target, c.compilePatternInitExpr(func() {
				c.emit(getKey)
			}, initializer, prop.Idx0()), emitAssign)
		default:
			c.throwSyntaxErrorf(int(prop.Idx0()-1), "Unsupported AssignmentProperty type: %T", prop)
		}
	}
	if pattern.Rest != nil {
		emitAssign(c.compileExpression(pattern.Rest), c.compileEmitterExpr(func() {
			c.emit(copyRest)
		}, pattern.Rest.Idx0()))
		c.emit(pop)
	}
	if !putOnStack {
		c.emit(pop)
	}
}

func (c *compiler) emitArrayPattern(pattern *ast.ArrayPattern, emitAssign func(target, init compiledExpr), putOnStack bool) {
	c.emit(iterate)