Module libmathcat::speech

The speech module is where the speech rules are read in and speech generated.

The speech rules call out to the preferences and tts modules and the dividing line is not always clean. A number of useful utility functions used by other modules are defined here.

Structs

• MyXPath
• ReplacementArray
  An array of rule Replacements (text, xpath, tts commands, etc)
• SpeechRules
  SpeechRulesWithContext encapsulates a named group of speech rules (e.g, “ClearSpeak”) along with the preferences to be used for speech.
• SpeechRulesWithContext
  SpeechRulesWithContext encapsulates a named group of speech rules (e.g, “ClearSpeak”) along with the preferences to be used for speech. Because speech rules can define variables, there is also a context that is carried with them

Enums

• RulesFor

Constants

• BRAILLE_RULES
• CONCAT_INDICATOR
  A bit of a hack to concatenate replacements (without a ’ ’). The CONCAT_INDICATOR is added by a “ct:” (instead of ‘t:’) in the speech rules and checked for by the tts code.
• CONCAT_STRING
• INTENT_RULES
  The current set of speech rules
• NAVIGATION_RULES
• OVERVIEW_RULES
• SPEECH_RULES

Traits

• TreeOrString
  As the name says, TreeOrString is either a Tree (Element) or a String It is used to share code during pattern matching

Functions

• as_hash_checked
  Returns the Yaml as a Hash or an error if it isn’t.
• as_str_checked
  Returns the Yaml as a &str or an error if it isn’t.
• as_vec_checked
  Returns the Yaml as a Vec or an error if it isn’t.
• braille_replace_chars
• compile_rule
  Given a string that should be Yaml, it calls build_fn with that string. The build function/closure should process the Yaml as appropriate and capture any errors and write them to std_err.
• intent_from_mathml
  The main external call, intent_from_mathml returns a string for the speech associated with the mathml. It matches against the rules that are computed by user prefs such as “Language” and “SpeechStyle”.
• overview_mathml
• remove_optional_indicators
• speak_intent
• yaml_to_type
  Converts its argument to a string that can be used in a debugging message.