32 lines
839 B
Go
32 lines
839 B
Go
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package entity
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// Scoped represents any entity that has its own scope.
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type Scoped interface {
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// Variable returns the declaration of the variable with the given name.
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// If no variable is found in this scope, it returns nil. Only the scope
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// in this entity is searched.
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Variable (name string) *Declaration
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// AddVariable adds a variable to this entity's scope.
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AddVariable (name string, declaration *Declaration)
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}
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// Scope implements a scope.
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type Scope struct {
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variables map[string] *Declaration
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}
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func (this *Scope) Variable (name string) *Declaration {
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if this.variables == nil {
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return nil
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}
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return this.variables[name]
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}
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func (this *Scope) AddVariable (name string, declaration *Declaration) {
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if this.variables == nil {
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this.variables = make(map[string] *Declaration)
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}
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this.variables[name] = declaration
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}
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