Practical Scala DSLs by Pierluigi Riti

Author:Pierluigi Riti
Language: eng
Format: epub
Publisher: Apress, Berkeley, CA

Parser1 ^ ^ f

Functional combinator: This creates a function with the output value of the parser.

Every parser returns a value of success, if the parsing operation terminates properly, or of failure, if the operation terminates in an error. It is possible to read this value from the object ParserResult. We can use this object to know exactly what’s going wrong in our parser operation.

A Simple Sample Parser

Until now, I have discussed only how to create a parser combinator . What we want to do now is create a simple parser for executing some basic mathematical operation.

The parsing library defines some basic operations that we can combine to create a more complex operation. The basic operations that we can find in the library areMatching token

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