43 lines
1.0 KiB
Go
43 lines
1.0 KiB
Go
package core
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import (
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"strconv"
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"git.akyoto.dev/cli/q/src/build/cpu"
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"git.akyoto.dev/cli/q/src/build/errors"
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"git.akyoto.dev/cli/q/src/build/token"
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)
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// ExecuteLeaf performs an operation on a register with the given leaf operand.
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func (f *Function) ExecuteLeaf(operation token.Token, register cpu.Register, operand token.Token) error {
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switch operand.Kind {
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case token.Identifier:
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name := operand.Text()
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variable := f.Variable(name)
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if variable == nil {
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return errors.New(&errors.UnknownIdentifier{Name: name}, f.File, operand.Position)
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}
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defer f.useVariable(variable)
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return f.ExecuteRegisterRegister(operation, register, variable.Register)
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case token.Number:
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value := operand.Text()
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number, err := strconv.Atoi(value)
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if err != nil {
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return err
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}
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return f.ExecuteRegisterNumber(operation, register, number)
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case token.String:
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if operation.Text() == "=" {
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return f.TokenToRegister(operand, register)
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}
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}
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return errors.New(errors.NotImplemented, f.File, operation.Position)
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}
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