Method is_true

src/speech.rs:1092–1101

(&self, context: &Context, mathml: Element)

    }

    fn is_true(&self, context: &Context, mathml: Element) -> Result<bool> {
        // return true if there is no condition or if the condition evaluates to true
        return Ok(
            match self.evaluate(context, mathml)? {
                Value::Boolean(b) => b,
                Value::Nodeset(nodes) => nodes.size() > 0,
                _                      => false,      
            }
        )
    }

    pub fn replace<'c, 's:'c, 'm:'c, T:TreeOrString<'c, 'm, T>>(&self, rules_with_context: &'r mut SpeechRulesWithContext<'c, 's,'m>, mathml: Element<'c>) -> Result<T> {
        if self.rc.string == "process-intent(.)" {