package core

import (
	"git.akyoto.dev/cli/q/src/build/config"
	"git.akyoto.dev/cli/q/src/build/scope"
)

func (f *Function) useVariable(variable *scope.Variable) {
	for i, scope := range f.Scopes {
		if scope.InLoop && variable.Scope != scope {
			continue
		}

		local := scope.Variables[variable.Name]

		if local == nil {
			continue
		}

		local.Alive--

		if local.Alive < 0 {
			panic("incorrect number of variable use calls")
		}

		if local.Alive == 0 {
			if config.Comments {
				f.Comment("%s (%s) died in scope %d", local.Name, local.Register, i)
			}

			scope.Free(local.Register)
		} else if config.Comments {
			f.Comment("%s (%s) used in scope %d", local.Name, local.Register, i)
		}
	}
}