Correctly detect failed Apply() parsers #38
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This was referenced May 30, 2018
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This fixes #37 and makes a number of small improvements; spinning it up via the JSON example :-)...
The number one issue is that
Apply()should never backtrack if the applied parser fails. Communicating this out to combinators that make these decisions - particularlyOr()- need to see theApply()parser as having consumed input. This interacts with error location reporting, which makes for some fun juggling of locations, remainders, positions etc.