net.cscott.sdr.calls
Class CallDB

java.lang.Object
  net.cscott.sdr.calls.CallDB

public class CallDB
extends Object

CallDB holds all the calls and concepts we know about. It is a singleton class; its static constructor loads all the call definitions from files and other classes.

Author:

C. Scott Ananian

Field Summary

Collection<Call>	allCalls
static CallDB	INSTANCE

Method Summary

Call	lookup(String name) Lookup a call in the database.
Apply	parse(Program program, String s) Parse a natural-language string of calls.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INSTANCE

public static final CallDB INSTANCE

allCalls

public final Collection<Call> allCalls

Method Detail

lookup

public Call lookup(String name)

Lookup a call in the database.

Throws:

IllegalArgumentException - if the call name is unknown.

Tests:

Basic lookup test:

js> db = CallDB.INSTANCE
net.cscott.sdr.calls.CallDB@1d66e22
js> db.lookup("square thru")
square thru[basic]

Check that exceptions are properly thrown for bogus calls:

js> try {
  >   CallDB.INSTANCE.lookup("foobar bat")
  > } catch (e) {
  >   print(e.javaException)
  > }
java.lang.IllegalArgumentException: Unknown call: foobar bat

parse

public Apply parse(Program program,
                   String s)

Parse a natural-language string of calls.

Tests:

js> db = CallDB.INSTANCE
net.cscott.sdr.calls.CallDB@1d66e22
js> db.parse(Program.BASIC, "double pass thru")
(Apply double pass thru)
js> db.parse(Program.BASIC, "square thru three and a half")
(Apply square thru (Apply 3 1/2))