25 lines
685 B
Go
25 lines
685 B
Go
package core
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import (
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"git.akyoto.dev/cli/q/src/cpu"
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"git.akyoto.dev/cli/q/src/expression"
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"git.akyoto.dev/cli/q/src/token"
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"git.akyoto.dev/cli/q/src/types"
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)
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// Evaluate evaluates an expression and returns a register that contains the value of the expression.
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func (f *Function) Evaluate(expr *expression.Expression) (types.Type, cpu.Register, error) {
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if expr.Token.Kind == token.Identifier {
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name := expr.Token.Text(f.File.Bytes)
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variable := f.VariableByName(name)
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if variable.Alive == 1 {
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f.UseVariable(variable)
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return variable.Type, variable.Register, nil
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}
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}
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tmp := f.NewRegister()
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typ, err := f.ExpressionToRegister(expr, tmp)
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return typ, tmp, err
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}
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