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Hook help messages into command data structure

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This commit is contained in:
greg 2018-07-02 17:37:24 -07:00
parent ee55729d5f
commit d075f613f9
1 changed files with 18 additions and 4 deletions
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22
schala-repl/src/lib.rs
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@ -289,7 +289,7 @@ impl Repl {
loop {
let language_name = self.languages[self.current_language_index].get_language_name();
let directives = self.get_directives(&self.get_cur_language().get_passes());
let directives = self.get_directives();
let tab_complete_handler = TabCompleteHandler::new(self.interpreter_directive_sigil, directives);
self.line_reader.set_completer(std::sync::Arc::new(tab_complete_handler));
@ -326,20 +326,22 @@ impl Repl {
interpreter_output.to_repl()
}
fn get_directives(&self, passes: &Vec<String>) -> CommandTree {
fn get_directives(&self) -> CommandTree {
let ref passes = self.get_cur_language().get_passes();
CommandTree::Top(vec![
CommandTree::term("exit", Some("exit the REPL")),
CommandTree::term("quit", Some("exit the REPL")),
CommandTree::term("help", Some("Print this help message")),
CommandTree::NonTerminal(format!("debug"), vec![
CommandTree::term("passes", None),
CommandTree::NonTerminal(format!("show"), passes.iter().map(|p| CommandTree::term(p, None)).collect(), None),
CommandTree::NonTerminal(format!("hide"), passes.iter().map(|p| CommandTree::term(p, None)).collect(), None),
], None),
], Some(format!("show or hide pass info for a given pass, or display the names of all passes"))),
CommandTree::NonTerminal(format!("lang"), vec![
CommandTree::term("next", None),
CommandTree::term("prev", None),
CommandTree::NonTerminal(format!("go"), vec![], None)//TODO
], None),
], Some(format!("switch between languages, or go directly to a langauge by name"))),
])
}
@ -396,9 +398,21 @@ impl Repl {
"help" => {
let mut buf = String::new();
let ref lang = self.languages[self.current_language_index];
let directives = match self.get_directives() {
CommandTree::Top(children) => children,
_ => panic!("Top-level CommandTree not Top")
};
writeln!(buf, "MetaInterpreter options").unwrap();
writeln!(buf, "-----------------------").unwrap();
for directive in directives {
let trailer = " ";
writeln!(buf, "{}{}- {}", directive.get_cmd(), trailer, directive.get_help()).unwrap();
}
writeln!(buf, "").unwrap();
/*
writeln!(buf, "exit | quit - exit the REPL").unwrap();
writeln!(buf, "debug [show|hide] <pass_name> - show or hide debug info for a given pass").unwrap();