/
exceptions.cljc
56 lines (46 loc) · 2.07 KB
/
exceptions.cljc
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(ns fif.stack-machine.exceptions
"Used to generate stack-error exceptions."
(:require
[fif.stack-machine :as stack]
[fif.stack-machine.error-handling :as error-handling]))
(defn raise-unbounded-mode-argument
"Used to raise a stack error in situations where a word definition is
used improperly. Usually for words used to end a mode that don't
have a matching start mode definition."
[sm]
(let [word-name (-> sm stack/get-code first)
errmsg (str "Unbounded mode argument")
errextra {:mode-word word-name}
errobj (error-handling/stack-error sm errmsg errextra)]
(error-handling/handle-stack-error sm errobj)))
(defn raise-max-steps-exceeded
"Raises an error for errors involving the max step execution being
exceeded."
[sm]
(let [step-num (stack/get-step-num sm)
step-max (stack/get-step-max sm)
errmsg (str "Max Execution Step Exceeded")
errextra {:step-num step-num :step-max step-max}
errobj (error-handling/stack-error sm errmsg errextra)]
(error-handling/handle-stack-error sm errobj)))
(defn raise-incorrect-arity-error
[sm num-args]
(let [word-name (-> sm stack/get-code first)
errmsg (str "Not enough values on the main stack to satisfy word function")
errextra {:word-function-name word-name :word-function-arity num-args}
errobj (error-handling/stack-error sm errmsg errextra)]
(error-handling/handle-stack-error sm errobj)))
(defn raise-validation-error
[sm arg-index arg-value msg]
(let [errmsg (str "Stack Operation Validation Error")
errextra {:stack-argument-index arg-index
:stack-argument-value arg-value
:validation-error-message msg}
errobj (error-handling/stack-error sm errmsg errextra)]
(error-handling/handle-stack-error sm errobj)))
(defn raise-reserved-word-redefinition-error
[sm wname]
(let [errmsg (str "Reserved Word Redefinition Error")
errextra {:word-name wname}
errobj (error-handling/stack-error sm errmsg errextra)]
(error-handling/handle-stack-error sm errobj)))