44 lines
849 B
Go
44 lines
849 B
Go
package parser
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import (
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"github.com/robertkrimen/otto/ast"
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)
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type _scope struct {
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outer *_scope
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allowIn bool
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inIteration bool
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inSwitch bool
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inFunction bool
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declarationList []ast.Declaration
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labels []string
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}
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func (self *_parser) openScope() {
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self.scope = &_scope{
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outer: self.scope,
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allowIn: true,
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}
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}
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func (self *_parser) closeScope() {
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self.scope = self.scope.outer
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}
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func (self *_scope) declare(declaration ast.Declaration) {
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self.declarationList = append(self.declarationList, declaration)
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}
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func (self *_scope) hasLabel(name string) bool {
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for _, label := range self.labels {
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if label == name {
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return true
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}
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}
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if self.outer != nil && !self.inFunction {
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// Crossing a function boundary to look for a label is verboten
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return self.outer.hasLabel(name)
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}
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return false
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}
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