package scope

import (
	"git.urbach.dev/cli/q/src/cpu"
)

// Scope represents an independent code block.
type Scope struct {
	Variables []*Variable
	Depth     uint8
	InLoop    bool
	cpu.State
}

// AddVariable adds a new variable to the current scope.
func (s *Scope) AddVariable(variable *Variable) {
	s.Variables = append(s.Variables, variable)
	s.Use(variable.Value.Register)
}

// VariableByName returns the variable with the given name or `nil` if it doesn't exist.
func (s *Scope) VariableByName(name string) *Variable {
	for _, v := range s.Variables {
		if v.Name == name {
			return v
		}
	}

	return nil
}