31 lines
1 KiB
Go
31 lines
1 KiB
Go
package core
|
|
|
|
import (
|
|
"git.urbach.dev/cli/q/src/asm"
|
|
"git.urbach.dev/cli/q/src/errors"
|
|
"git.urbach.dev/cli/q/src/expression"
|
|
"git.urbach.dev/cli/q/src/types"
|
|
)
|
|
|
|
// CompileDelete compiles a `delete` function call which deallocates a struct.
|
|
func (f *Function) CompileDelete(root *expression.Expression) error {
|
|
parameters := root.Children[1:]
|
|
variableName := parameters[0].Token.Text(f.File.Bytes)
|
|
variable := f.VariableByName(variableName)
|
|
|
|
if variable == nil {
|
|
return errors.New(&errors.UnknownIdentifier{Name: variableName}, f.File, parameters[0].Token.Position)
|
|
}
|
|
|
|
defer f.UseVariable(variable)
|
|
f.SaveRegister(f.CPU.Input[0])
|
|
f.SaveRegister(f.CPU.Input[1])
|
|
f.RegisterRegister(asm.MOVE, f.CPU.Input[0], variable.Value.Register)
|
|
f.RegisterNumber(asm.MOVE, f.CPU.Input[1], variable.Value.Typ.(*types.Pointer).To.Size())
|
|
free := f.All.Functions["mem.free"]
|
|
f.BeforeCall()
|
|
f.Label(asm.CALL, asm.Label{Name: "mem.free", Type: asm.FunctionLabel})
|
|
f.AfterCall(f.CPU.Input[:2])
|
|
f.Dependencies = append(f.Dependencies, free)
|
|
return nil
|
|
}
|