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499 commits

Author SHA1 Message Date
Bill Currie
f65ce22ddc Fold constants for the return value of test_expr. 
More constantness preservation.
 2012-12-23 19:32:32 +09:00
Bill Currie
22db05dc9c Alias value expressions by aliasing the value. 
This keeps constant expressions constant, even through aliasing.
 2012-12-23 19:31:09 +09:00
Bill Currie
b295524385 Add new_value_expr(). 
This simplifies creating a new expression for an arbitrary value object.
 2012-12-23 19:29:50 +09:00
Bill Currie
82ded2b638 Split the test for assignment and parenthesis. 
This will make it easier to fix the internal error for "if (x = 0)".
 2012-12-23 14:55:16 +09:00
Bill Currie
b9a0e2ce03 Catch the error for undefined++. 2012-12-23 14:47:29 +09:00
Bill Currie
aae0e21a5b Treat class instance access as a normal error. 
Normally, it will happen only as a follow-on error, but I can think of a
way to force it without other errors, so treating it as an internal error
is a bit harsh.
 2012-12-23 06:01:20 +09:00
Bill Currie
452728126d Check the expression type when casting constants. 
Not all constant expressions are ex_value. This fixes the bogus errors and
ice in paroxysm.
 2012-12-21 17:12:41 +09:00
Bill Currie
3af031c33d Move the rest of the obj specific stuff into class.c. 
This gives better hiding of implementation details.
 2012-12-20 10:10:41 +09:00
Bill Currie
b9c5769e6d Allow messages to nil. 
That is, [nil message];. I just found out this is "perfectly legal"
(http://www.otierney.net/objective-c.html).
 2012-12-17 18:59:45 +09:00
Bill Currie
821081c9c8 Use the desination type for moves in assign_expr. 
for <struct> = nil; the source type is void and thus probably the wrong
size.
 2012-12-13 14:05:24 +09:00
Bill Currie
eb8fd55677 Move set.c into libQFutil. 
Also move the ALLOC/FREE macros from qfcc.h to QF/alloc.h (needed to for
set.c).

Both modules are more generally useful than just for qfcc (eg, set
builtins for ruamoko).
 2012-12-06 20:52:53 +09:00
Bill Currie
c06cd8fcc0 Cast constants at compile time. 
This takes care of the internal error due to aliasing values.
 2012-12-05 22:19:22 +09:00
Bill Currie
72108ba0b5 Document def.h. 
Also remove the extern for current_storage as it belongs in shared.h.

I'm not satisfied with the documentation for initialize_def, but it will do
for now. I probably have to rewrite the thing as it's a bit of a beast.
 2012-12-02 19:54:20 +09:00
Bill Currie
5725c5124c Rename the storage_class_t enum values. 
With the intoduction of the statement type enum came a prefix clash. As
"st" makes sense for "statement type", I decided that "storage class"
should be "sc". Although there haven't been any problems as of yet, I
decided it would be a good idea to clean up the clash now. It also helps
avoid confusion (I was a bit surprised after working with st_assign etc to
be reminded of st_extern etc).
 2012-12-02 10:11:30 +09:00
Bill Currie
54289da416 Fix the line number info for else. 
It has bugged me for a while that the goto for else would display the if's
source line.
 2012-12-01 16:37:38 +09:00
Bill Currie
24847857ef Fix some whitespace. 2012-11-26 16:13:40 +09:00
Bill Currie
86968f662e Store the function type in function values. 
This fixes IMP msg = nil;
 2012-11-21 10:06:15 +09:00
Bill Currie
984aa9a4cf Support entity.field = structvar2 = structvar1; 
The structvar2 = structvar1 is implemented as a move expresion, which
address_expr didn't like. Return the address of the source. For indirect
move expressions, this is just the source expression itself.
 2012-11-20 17:12:16 +09:00
Bill Currie
0cedf0d13a Fix a bunch of mis-uses of an expressions's value. 
The value field really should be treated as constant.
 2012-11-15 13:44:06 +09:00
Bill Currie
28ce35f1c1 Make values independent objects. 
values are now uniquely allocated (for the current object file). With
this, constants in dags will work.
 2012-11-15 13:44:06 +09:00
Bill Currie
aa72f263ec Use an extra temp for v6 float modulo. 
It seems the dag creation algorithm doesn't like "a = a op a", so use
"b = a op a" instead. Since I plan on fixing temp leaks anyway, this won't
be a problem (also, few people even use qfcc's v6 float modulo :P).
 2012-11-15 13:44:06 +09:00
Bill Currie
ee8247ec61 Support using enums as array indices. 2012-11-15 13:39:23 +09:00
Bill Currie
c96718493a A bit of a cleanup before fixing class type defs. 
All internal structs now have "proper" names, and fit the naming convention
(eg, obj_module (like objective-c's types, but obj instead of objc). Some
redundant types got removed (holdovers from before proper struct tag
handling).

Also, it has proven to be unnecessary to build internal classes, so
make_class and make_class_struct are gone, too.
 2012-11-12 11:12:33 +09:00
Bill Currie
96110a0f54 Treat messages to id and Class separately. 
As id and Class do not point to real objects as such, trying to get the
class from their types doesn't work, so instead send the message to a
"null" class that skips the method checks.
 2012-11-11 17:39:12 +09:00
Bill Currie
86091856be Revamp the static class creation. 
Type names are cleaned up, as is the creation. Also, the class pointer in
the type encoding now gets emitted. However, Still need to actually create
_OBJ_CLASS_Class and fix the type encoding reloc handling in the linker.
 2012-11-10 12:56:19 +09:00
Bill Currie
9095e1eabc Rework build_switch to use initialize_def. 
This required support for label reference expressions, whose purpose is to
represent the address of a label.
 2012-11-09 12:22:34 +09:00
Bill Currie
27b83a8d65 Clean up all extra aborts, using internal_error instead. 
Some internal_error calls have no message, but at least things will be more
consistent.
 2012-10-26 19:02:02 +09:00
Bill Currie
23a38738fc Massive whitespace cleanup. 
Lots of trailing whitespace and otherwise blank lines.
 2012-05-22 08:23:22 +09:00
Bill Currie
f781e9078c Correct some typos in error messages. 2012-05-06 18:43:18 +09:00
Bill Currie
78a9ba2557 Make expression alias chains not-a-bug. 
The common cause seems to be casting a cast (very common, and I'm not sure
just realiasing the expression would be right). It does't cause any harm
(particularly, it doesn't trigger alias def chains), so I won't worry about
it.
 2012-05-03 13:57:31 +09:00
Bill Currie
ec98e3e206 Mark alias def chains as a bug. 2012-05-03 13:27:30 +09:00
Bill Currie
bc1b483525 Nuke the rcsid stuff. 
It's pretty useless in git.
 2012-04-22 10:56:32 +09:00
Jeff Teunissen
6ead583195 Ruamoko: Implement infinity. 
The special token __INFINITY__, like __FILE__ and friends, will expand to
a floating-point expression containing a value the C compiler considers
infinite. Obviously, this assumes that the system has relatively modern
float hardware -- but if it doesn't, having Ruamoko be able to represent
float infinity is the least of your problems. :)
 2011-12-14 12:20:10 -05:00
Bill Currie
fd6e341e06 Clean up cast_expr() a little bit. 2011-04-10 00:29:27 +09:00
Bill Currie
57ed603658 Extract values from constant defs. 2011-04-09 12:42:41 +09:00
Bill Currie
55cc0f9206 Bring back the unsigned type (PROGS version bump) 
This is only low-level support (the unsigned keyword still does not work),
but sufficient to make switch statements using jump tables work.
 2011-04-09 10:07:47 +09:00
Bill Currie
237f11c472 Fix cast expressions. 
Casting between ints and floats needs special treatment to get the
conversion operator, but other casts need to be aliases.
 2011-04-08 13:55:26 +09:00
Bill Currie
c4a398850a Fix defs as constants for vectors and quaternions. 2011-04-04 21:31:59 +09:00
Bill Currie
2c9c1bd968 Ensure defs for @self and @this are generated. 2011-04-03 13:00:48 +09:00
Bill Currie
8e18c76bde Make initialized variables defs rather than immediate constants. 2011-03-30 19:58:09 +09:00
Bill Currie
f1d9570dc8 Fix constant value type handling. 
Rename immediate.[ch] to value.[ch] and clean up the mess.

Add convert_value() to convert the type of a value (only scalar types).
 2011-03-22 12:24:39 +09:00
Bill Currie
899af3119b Use the correct type when generating a move expression. 2011-03-10 19:30:21 +09:00
Bill Currie
39278ba8cc Explicitly select between direct and indirect moves. 2011-03-09 10:30:57 +09:00
Bill Currie
f66e20db17 Set the dereferenced type in the field value. 2011-03-08 19:29:36 +09:00
Bill Currie
7198be5726 Treat entities a bit like structures in field_expr (). 
Look in the entity field symbol table for the field before looking in the
normal symbol table. This allows entity fields to be accessed even when
the current scope has symbol of the same name. However, checking the
normal symbol table where there is no such field allows for field
variables when I get around to implementing them.
 2011-03-08 19:28:11 +09:00
Bill Currie
c069bafad8 Support casting from enum to float. 2011-03-07 14:04:05 +09:00
Bill Currie
0b3d0011c5 Implement vector and quaternion component access. 2011-03-07 10:02:20 +09:00
Bill Currie
f0e47f2334 Clean up some code duplication. 2011-03-07 10:01:21 +09:00
Bill Currie
a6f222106e Fix taking the address of normal variables. 
Treat them the same as structure variables.
 2011-03-07 09:58:51 +09:00
Bill Currie
3c1784d46c Fold constants on both sides of = to ensure correct expression types. 2011-03-07 08:33:30 +09:00
Bill Currie
b49d90e769 Do not lose the block expression when taking its address. 2011-03-06 16:32:51 +09:00
Bill Currie
c78d15b331 Support taking the address of block expressions that have a result. 2011-03-06 16:05:38 +09:00
Bill Currie
993d05b3d3 Support taking the address of alias expressions. 
Taking the address of an alias expression undoes the alias but uses the
aliased type.
 2011-03-06 15:58:49 +09:00
Bill Currie
b7aa2f6786 Support access to struct fields in a structure in an entity. 2011-03-06 15:39:27 +09:00
Bill Currie
417d1b4442 Fix structure copy into and out of entities. 2011-03-06 13:19:20 +09:00
Bill Currie
8cfa80b5d4 Implement think expressions. 2011-03-05 18:01:37 +09:00
Bill Currie
a3c1f339fc Gracefully handle undefined symbols in entity field expressions. 2011-03-05 17:22:04 +09:00
Bill Currie
bbedbf5c9c Add the .return etc symbols to the symbol table. 
This puts their defs into the object file.
 2011-03-05 08:37:51 +09:00
Bill Currie
b5e7e666e9 Fix some missed branch/goto expression changes. 2011-03-03 17:33:53 +09:00
Bill Currie
c5ecc170b6 Give labels a usage count to detect unused labels. 2011-03-03 15:28:49 +09:00
Bill Currie
74e6b13aee Use alias expressions where possible when testing an expression. 2011-03-03 13:47:28 +09:00
Bill Currie
45de7327dc Implement alias expressions (finally). 
Alias expressions are like cast expressions, but never do any conversions.
 2011-03-03 11:06:10 +09:00
Bill Currie
c12211d8bb Support enum results for boolean expressions. 
eg enum BOOL x = a && b;
 2011-03-02 22:46:55 +09:00
Bill Currie
aa4ed00090 Fix the message type used to check arguments. 2011-03-02 22:13:16 +09:00
Bill Currie
4fd6bdae6f Allow nil to be assigned to field variables. 
Note, this is the field variable itself, not the field in the entity.
eg:
	.integer x = nil;
 2011-02-22 09:19:01 +09:00
Bill Currie
5252d72856 Correct the type for _OBJ_SELECTOR_TABLE. 2011-02-15 15:33:12 +09:00
Bill Currie
b2d4aee61e Reimplement selector expressions to work with far data. 
They currently execute a lea instruction every method call, but the
optimizer should take care of that once its written.
 2011-02-15 10:48:05 +09:00
Bill Currie
19f6faf0ad Fix aggregate initializers. 
Initializing arrays and structs seems to be working.
 2011-02-15 09:30:37 +09:00
Bill Currie
d162838299 Resurrect constant_expr(). 2011-02-15 09:28:27 +09:00
Bill Currie
6b29568fa9 Set the source file and line when copying an expression. 
This fixes the crazy line numbers in the debug info.
 2011-02-14 23:10:45 +09:00
Bill Currie
b545f72f93 Report errors for incomplete types and missing fields. 2011-02-13 20:23:08 +09:00
Bill Currie
976ff8a6bb Allow cast expressions to be lvalues. 
These really need to be alias expressions rather than cast expressions
so the two can be separated as cast expressions should not be lvalues.
 2011-02-13 17:54:15 +09:00
Bill Currie
fa742ceed6 Handle @self and @this correctly. 2011-02-13 17:52:19 +09:00
Bill Currie
0b5565396b Add a class type to symbols and rework the CLASS_NAME handling. 
This fixes the problem with [Array alloc] producing a warning about Class
not repsonding to -alloc.
 2011-02-13 16:05:09 +09:00
Bill Currie
d93d8d7d46 Remove the dirty hack used for accessing params and the return value. 
Instead of using the equivalent of *(float*)&.return, now use the
equivalent of (float).return. No conversion is done in the "cast".

NOTE: this sort of cast should be separated from normal casts.
 2011-02-11 22:29:38 +09:00
Bill Currie
f5412c2b20 Remove a fixme. 2011-02-11 22:29:38 +09:00
Bill Currie
c185fbb782 Set the type of the super structure to the correct type. 2011-02-11 22:29:38 +09:00
Bill Currie
a1d4d4bae1 Handle block expressions in is_indirect(). 2011-02-11 22:29:30 +09:00
Bill Currie
adeef4a4eb Copy named expressions. 
Since expressions can be modified, making DAGs this early causes
corruption of the expression tree.
 2011-02-10 14:43:49 +09:00
Bill Currie
681ded9375 Fix debug line number information. 2011-02-09 09:59:43 +09:00
Bill Currie
6643c5dd98 Fix messages to super. 2011-02-08 17:09:27 +09:00
Bill Currie
93a5808659 Support direct struct/union field access. 2011-02-08 14:48:26 +09:00
Bill Currie
92799650c0 Implement struct field access via a pointer. 2011-02-07 22:15:10 +09:00
Bill Currie
d549e5c6b5 Allow enums to be tested. 2011-02-07 11:30:56 +09:00
Bill Currie
829fb33e92 Fix converting nil to a pointer type. 2011-02-07 10:10:48 +09:00
Bill Currie
3025e04ac5 Partially resurrect field_expr() 
For now, only entity.field and ivar access via a pointer have been
implemented. The rest will come later as needed.
 2011-02-07 08:30:28 +09:00
Bill Currie
e4ac92b5f2 Auto-cast between enums and the default type. 2011-02-06 20:08:16 +09:00
Bill Currie
f2c272f0b8 Make adding a symbol to multiple tables an internal error. 2011-02-06 20:00:14 +09:00
Bill Currie
67957a14df Bring back convert_name(), but siimplified. 
It is now mainly for converting __FILE__ etc, handling expression symbols,
and checking for undefined identifiers.
 2011-02-06 14:29:14 +09:00
Bill Currie
1f6abb2cce Minor cleanups to message_expr(). 
Fix for class names no longer being pointers to the class.
 2011-02-04 23:22:51 +09:00
Bill Currie
eff3957487 Resurrect the address expression code for arrays etc. 
This fixes selector finding.
 2011-02-04 23:20:37 +09:00
Bill Currie
d7853682af Fix conversion of nil to a real type. 2011-02-03 21:37:15 +09:00
Bill Currie
c158b14286 Remove the labels list from the pr struct. 
I'm not sure they were ever needed.
 2011-01-28 11:40:25 +09:00
Bill Currie
a6e65488ec Remove the "test" parameter from test_expr. 
The parameter became redundant at some stage.
 2011-01-27 08:31:51 +09:00
Bill Currie
5231e8e9f8 Handle .zero, .return and .param* properly. 2011-01-26 08:01:24 +09:00
Bill Currie
0624408317 Move the diagnostic functions into their own file. 2011-01-24 21:54:57 +09:00
Bill Currie
483cbeba03 Fix a few FIXMEs. 2011-01-24 21:13:37 +09:00
Bill Currie
afc5b2827d Simplify def handling, use far data. 
Since there is now a proper symbol table, defs are now just references to
memory locations and the symbol table takes care of duplicates.

Also, start using far data for ObjQC structures.

The qfo functions have been stubbed out until I figure out what to do with
object files in the new scheme.
 2011-01-24 15:41:43 +09:00
Bill Currie
bf626c9e00 Fix some simple fixmes 2011-01-23 11:13:56 +09:00
Bill Currie
20b14af024 Add "is_math" type check and use for unary +/-. 2011-01-23 11:12:58 +09:00