Eelco Dolstra
25eedf085d
* Quick and dirty implementation of with'. with e1; e2' is
...
basically desugared to `let <with> = e1; e2', and `lookupVar' looks
in each <with> in the environment chain for an attribute with the
specified name.
2010-03-25 14:51:04 +00:00
Eelco Dolstra
3c9f8fc9b6
* Don't convert variable names to strings.
2010-03-25 13:10:04 +00:00
Eelco Dolstra
f450384ded
* Implement blackholing.
2010-03-25 12:51:14 +00:00
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
