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Revise expectation syntax, fix regular expression bug, refactor implementation #30
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Resolves #13
Fixes #25
This PR changes the syntax for DocTest expectations in source code. Currently
=>
matches the expected REPL output. With this change,=>
instead matches the value literal in the REPL output.The following table documents all of the available expectations:
1 + 2 // -> String
1 + 2 // => 3
1 + 2 // ~> String = \d
1 / 0 // !! error: division by zero
In addition, this PR also refactors the use of regular expression into a new
Scanner
type and fixes a bug in the regex pattern that caused DocTest annotations to be missed.