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package expr
import (
`fmt`
)
// SyntaxError represents a syntax error in the expression.
type SyntaxError struct {
Pos int
Reason string
}
func newSyntaxError(pos int, reason string) *SyntaxError {
return &SyntaxError {
Pos : pos,
Reason : reason,
}
}
func (self *SyntaxError) Error() string {
return fmt.Sprintf("Syntax error at position %d: %s", self.Pos, self.Reason)
}
// RuntimeError is an error which would occure at run time.
type RuntimeError struct {
Reason string
}
func newRuntimeError(reason string) *RuntimeError {
return &RuntimeError {
Reason: reason,
}
}
func (self *RuntimeError) Error() string {
return "Runtime error: " + self.Reason
}
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