Sei Lisa
df31a69465
In functions that end in 'return;', remove the 'return;'.
...
This allows better side-effect analysis, because 'return' is not side-effect free unless it's the last statement. But that's better handled in the dead code removal module, as the comment specifies.
2015-03-13 23:46:23 +01:00
Sei Lisa
9cb02839bc
Remove extra code.
2015-03-13 23:45:56 +01:00
Sei Lisa
f6b472133a
Optimize [elem] -> (list)elem on output. Saves us headaches.
2015-03-13 22:42:00 +01:00
Sei Lisa
2948399bf8
Revert 3b7e461d82, as it introduced bugs.
2015-03-13 22:13:00 +01:00
Sei Lisa
f7556e7a66
Remove globals from symbol table when no longer necessary.
2015-03-13 20:11:57 +01:00
Sei Lisa
fc7abc7d99
Fix bug broken by 562154e7aa.
...
Referencing a global that was optimized out, caused a crash.
```
integer DEBUG = 1;
default
{
state_entry()
{
if (DEBUG) llOwnerSay("DEBUG");
}
}
```
2015-03-13 16:49:31 +01:00
Sei Lisa
3d965f13e0
Fix bug with the scope of function calls.
...
Makes this script work, as it should:
`default { timer() { string llSay; llSay(0, llSay); } }`
2015-03-13 16:43:35 +01:00
Sei Lisa
890e960b57
Implement Lazy List reading. Update docs according to last changes (in FS too).
...
Adds a new tree node type, SUBIDX, which hopefully should never appear in actual output. If it does, it's prefixed with the string (MISSING TYPE) as a cue to the programmer.
2015-03-13 06:38:35 +01:00
Sei Lisa
535dc8434c
Allow a code block instead of a ':' as terminator for 'case' and 'default'.
...
For Firestorm compatibility.
2015-03-13 05:16:22 +01:00
Sei Lisa
39b6036671
Remove 'Scope' from functions in symbol table. Function scope is always 0.
2015-03-13 05:12:09 +01:00
Sei Lisa
4f8d2979aa
Fix typo in EParseFunctionMismatch.
2015-03-13 03:28:51 +01:00
Sei Lisa
63e3021a6d
Comment tweaking.
2015-03-09 13:20:37 +01:00
Sei Lisa
9c926b6fec
Fix obsolete comment.
...
There was a time where I decided that the tree would be stored inside the symbol table, as values for the global symbols. I changed my mind later and separated them, but that comment remained.
2015-03-09 01:07:55 +01:00
Sei Lisa
6a0eebf157
Implement a couple subtleties of the lexer in the handling of strings.
...
First, a string does not have its own context, it's a regular expression, therefore if there isn't a matching closing quote until EOF, it's not an unterminated string. It plainly *isn't* a string.
Second, the string lexer searches for either the regexp '[^"\\]' (any character except a double quote or a backslash) or the regexp '\\.', that is, a backslash followed by an "any character" meta. But the "any character" meta does NOT match a newline. The consequence is that a '\' followed by a newline cancels the matching, and the whole thing is not considered a string.
Isolated double quotes are then plain ignored as many other characters.
An example illustrating both cases:
```
default
{
state_entry()
{
string msg = "Hello, Avatar!";
llOwnerSay"(msg); // the opening quote will be ignored
// the following backslash at EOL cancels the previous double quote: \
llOwnerSay(llGetKey(")); // Unterminated string; unmatched so ignored.
}
}
```
2015-03-08 16:53:58 +01:00
Sei Lisa
1e8b77bf50
Rather than generating random identifiers for locals, prefix them with 'loc_'.
...
Should help improving readability of the optimized script.
2015-03-07 14:51:51 +01:00
Sei Lisa
a292846d28
Fix missing scope table index when generating the call to lazy_list_set.
2015-03-07 14:50:25 +01:00
Sei Lisa
562154e7aa
Remove the symbol table entry too when removing a global state/function/var.
2015-03-07 14:33:11 +01:00
Sei Lisa
59cdd64228
Warn about float constants that can't be represented in globals. Also don't duplicate the globals warnings.
2015-03-06 23:26:58 +01:00
Sei Lisa
c1d837674c
Forgot to exclude globals from this optimization somehow.
2015-03-06 22:55:28 +01:00
Sei Lisa
a9179f2779
Read the data files from the same path where the script resides.
2015-03-06 20:29:54 +01:00
Sei Lisa
c68a1f4ad6
Add copyright notices to all files, to prepare the program for release.
2015-03-05 23:18:41 +01:00
Sei Lisa
33de6c0efc
Comment typo, brackets->braces.
2015-03-05 20:18:13 +01:00
Sei Lisa
308ca7c8ff
Add support for 'break n;' and 'continue n;'. Also simplify the break/continue stacks handling code and fix some bugs.
2015-03-05 20:12:32 +01:00
Sei Lisa
d4035b0723
Add incompatibility note on JSON.
2015-03-05 18:48:28 +01:00
Sei Lisa
e5cb37dfe4
For now, enable the RE
2015-03-05 14:42:02 +01:00
Sei Lisa
f730843762
More TODO tweaking.
2015-03-05 06:20:11 +01:00
Sei Lisa
7fb345b222
'case' needed to be in the list of 4-char words to avoid. Also tweak a comment.
2015-03-05 06:18:53 +01:00
Sei Lisa
cbcf60767a
Implement break/continue and switch().
...
While on it, reorganize the help text and enable 'dcr' by default.
2015-03-05 01:37:32 +01:00
Sei Lisa
a36715f121
Add reference source, comments.
2015-03-04 02:01:03 +01:00
Sei Lisa
8b9676e5dc
Fix missing 'paramscope', remove commented out old body, simplify.
2015-03-04 01:51:08 +01:00
Sei Lisa
a6127cf144
lazylistcompat idea ditched.
2015-03-04 00:40:07 +01:00
Sei Lisa
87b6002b6c
Fix the bug detected in llListReplaceList.
2015-03-04 00:31:55 +01:00
Sei Lisa
8ea6ae50fd
Replace the lazy_list_set function with a more compact one.
2015-03-03 20:00:40 +01:00
Sei Lisa
b73805e0ce
Add "lazy lists" assignment support (mylist[index] = value).
...
Add support for LAMBDA (empty) tree nodes while on it, that allow us to define private stuff at the top without caring about Loc.
2015-03-03 17:59:51 +01:00
Sei Lisa
7e521780d6
Two more optimizations TODO
2015-03-03 17:49:57 +01:00
Sei Lisa
e36fc83b39
Noted important bug in llListReplaceList
2015-03-03 17:26:50 +01:00
Sei Lisa
0b55f6e64d
Oops, the operator is !, not -
2015-03-03 02:20:31 +01:00
Sei Lisa
05d46e9ac3
Optimize comparisons of the form int>2147483647 or int<-2147483648 and expand (>=, <=, !=) to !(<, >, ==) respectively.
2015-03-03 02:16:00 +01:00
Sei Lisa
493aed6c39
Optimize (-a)*b or a*(-b) to -(a*b), revisiting the expression.
...
This obviates the need for (-a)*(-b) because it will be simplified automatically. It also enables (a+1)*b-1 to be simplified to just ~(~a*b). Still missing simplifying a*b+b to (a+1)*b, but that's more complicated.
2015-03-03 01:46:53 +01:00
Sei Lisa
22a1a2e8ba
Document the change to the symtab structure.
2015-03-03 00:51:48 +01:00
Sei Lisa
01f2bba2f4
Make *-2 and *2 only work for local variables. Needed an adition to the parser.
2015-03-03 00:49:14 +01:00
Sei Lisa
d8f42a5071
Remove obsolete comment about parentheses (they are now implicit).
2015-03-03 00:47:15 +01:00
Sei Lisa
c650ad26f8
Comment changes only.
2015-03-02 23:28:14 +01:00
Sei Lisa
3b7e461d82
Convert [x] -> (list)x except in globals.
2015-02-28 22:48:11 +01:00
Sei Lisa
831296eddc
Minor shortening of name to fit in line
2015-02-28 21:46:19 +01:00
Sei Lisa
762bf1f27b
Add some FIXMEs and TODOs, remove comment that no longer makes sense.
2015-02-28 20:39:23 +01:00
Sei Lisa
0ca5a8f5b0
Fix typo that made function calls be wrapped in parentheses on output.
...
No biggie, but what's right is right.
2015-02-28 20:37:59 +01:00
Sei Lisa
e30a4ea25d
Fix addstrings option (oops).
2015-02-28 20:37:18 +01:00
Sei Lisa
8f83e2f1ab
Add "addstrings" option (disabled by default) to select whether to automatically concatenate strings during constant folding.
2015-02-28 20:01:51 +01:00
Sei Lisa
6ea01c4242
Added optimizations for most operators, and 'cornermath' option.
...
Only remaining operators are < <= > >= &.
2015-02-28 18:30:04 +01:00
