diff options
Diffstat (limited to '')
| -rw-r--r-- | stdlib/source/lux/control/function/contract.lux | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/stdlib/source/lux/control/function/contract.lux b/stdlib/source/lux/control/function/contract.lux index 3d1359fdf..1c9236877 100644 --- a/stdlib/source/lux/control/function/contract.lux +++ b/stdlib/source/lux/control/function/contract.lux @@ -1,20 +1,26 @@ (.module: [lux #* - [abstract - monad] [control - [parser - ["s" code]]] + ["." exception (#+ exception:)]] [data [number ["i" int]] [text ["%" format (#+ format)]]] [macro (#+ with-gensyms) - ["." code] - [syntax (#+ syntax:)]]]) + [syntax (#+ syntax:)] + ["." code]]]) -(def: #export (assert! message test) +(template [<name>] + [(exception: (<name> {condition Code}) + (exception.report + ["Condition" (%.code condition)]))] + + [pre-condition-failed] + [post-condition-failed] + ) + +(def: (assert! message test) (-> Text Bit []) (if test [] @@ -26,8 +32,8 @@ "Otherwise, an error is raised." (pre (i.= +4 (i.+ +2 +2)) (foo +123 +456 +789)))} - (wrap (list (` (exec (assert! (~ (code.text (format "Pre-condition failed: " (%.code test)))) - (~ test)) + (wrap (list (` (exec ((~! ..assert!) (~ (code.text (exception.construct ..pre-condition-failed test))) + (~ test)) (~ expr)))))) (syntax: #export (post test expr) @@ -39,6 +45,6 @@ (i.+ +2 +2)))} (with-gensyms [g!output] (wrap (list (` (let [(~ g!output) (~ expr)] - (exec (assert! (~ (code.text (format "Post-condition failed: " (%.code test)))) - ((~ test) (~ g!output))) + (exec ((~! ..assert!) (~ (code.text (exception.construct ..post-condition-failed test))) + ((~ test) (~ g!output))) (~ g!output)))))))) |