27 lines
550 B
Go
27 lines
550 B
Go
package builtins
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import (
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"io/ioutil"
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"monkey/internal/object"
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"monkey/internal/typing"
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)
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// ReadFile ...
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func ReadFile(args ...object.Object) object.Object {
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if err := typing.Check(
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"readfile", args,
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typing.ExactArgs(1),
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typing.WithTypes(object.StringType),
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); err != nil {
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return newError(err.Error())
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}
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filename := args[0].(*object.String).Value
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data, err := ioutil.ReadFile(filename)
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if err != nil {
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return newError("IOError: error reading from file %s: %s", filename, err)
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}
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return &object.String{Value: string(data)}
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}
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