7 commits

Author	SHA1	Message	Date
Eelco Dolstra	ef8bd919fc	* Implement `...' and default function arguments.	2010-03-25 12:45:23 +00:00
Eelco Dolstra	8a10360c91	* Simplify @-patterns: only {attrs}@name' or name@{attrs}' are now ... allowed. So `name1@name2', `{attrs1}@{attrs2}' and so on are now no longer legal. This is no big loss because they were not useful anyway. This also changes the output of builtins.toXML for @-patterns slightly.	2010-03-25 12:19:41 +00:00
Eelco Dolstra	7482349fe8	* Implemented attribute set pattern matches.	2010-03-24 23:40:00 +00:00
Eelco Dolstra	0fd3648d34	* Store values in environments.	2010-03-24 12:41:08 +00:00
Eelco Dolstra	b70bd8fe56	* Reduce the number of value allocations in eval() by moving ... responsibility for allocation of the result to the caller.	2010-03-24 12:11:38 +00:00
Eelco Dolstra	d31c59eb17	* Plain lambdas.	2010-03-24 11:06:05 +00:00
Eelco Dolstra	0910ae9568	* Start of an evaluator that uses call-by-need (with thunk updating) ... instead of (memoised) call-by-name.	2010-03-23 17:30:50 +00:00