class Marten::Template::Condition

• Marten::Template::Condition
• Reference
• Object

Overview

A template condition.

Condition expressions such as "var1 || var2" are parsed and evaluated using this abstraction.

context = Marten::Template::Context{"var1" => nil, "var2" => "42"}
Marten::Template::Condition.new(["var1", "||", "var2"]).parse.eval(context).truthy? # => true

Defined in:

marten/template/condition.cr
marten/template/condition/token/base.cr
marten/template/condition/token/end.cr
marten/template/condition/token/operator.cr
marten/template/condition/token/operator/and.cr
marten/template/condition/token/operator/equal.cr
marten/template/condition/token/operator/greater_than.cr
marten/template/condition/token/operator/greater_than_or_equal.cr
marten/template/condition/token/operator/in.cr
marten/template/condition/token/operator/infix.cr
marten/template/condition/token/operator/less_than.cr
marten/template/condition/token/operator/less_than_or_equal.cr
marten/template/condition/token/operator/not.cr
marten/template/condition/token/operator/not_equal.cr
marten/template/condition/token/operator/or.cr
marten/template/condition/token/operator/prefix.cr
marten/template/condition/token/value.cr

Constructors

• .new(parts : Array(String))

Instance Method Summary

• #expression(rbp) : Token::Base

  Consumes condition tokens until a token with a left binding power equal or lower than rbp is found.

• #parse : Token::Base

  Returns the condition token corresponding to the condition expression.

Constructor Detail

Instance Method Detail