class Bindgen::ConfigReader::ConditionEvaluator

• Bindgen::ConfigReader::ConditionEvaluator
• Reference
• Object

Overview

Implements the condition evaluation logic of Parser.

See Parsers documentation for a description of the syntax.

You can sub-class this and pass an instance into a Parser if you want to augment its feature-set.

Defined in:

bindgen/config_reader/condition_evaluator.cr

Constant Summary

RX = /^(?:els)?if(?: +|_)(.+?)(?: +|_)(is|isnt|matches|newer_or|older_or)(?: +|_)(.*)$/

Regular expression for conditionals. Matches: [els]if VARIABLE (is|matches) VALUE. Instead of a space, an underscore may be used instead.

Constructors

• .new(variables : Hash(String, String))

Instance Method Summary

• #conditional?(text : String) : Bool

  Returns true if the text looks like a condition.

• #evaluate(condition_text : String, state : ConditionState) : Tuple(Bool, ConditionState)

  Evaluates condition_text.

• #read_verb(text : String) : Verb | Nil

  Reads the conditional verb from text, if any.

• #variables : Hash(String, String)

  Accessible variables

Constructor Detail

Instance Method Detail