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315 Commits

Author SHA1 Message Date
Russ Cox
7a0f4cac03 pass Type* to makechan and makemap so that 
they can get the official alignment out of there
instead of guessing.

R=ken
OCL=34450
CL=34450
 2009-09-08 13:46:54 -07:00
Ken Thompson
0421cf072e maps in static initialization 
R=rsc
OCL=34434
CL=34434
 2009-09-07 17:36:47 -07:00
Ken Thompson
a24a26c107 more static init 
almost done

R=rsc
OCL=34422
CL=34422
 2009-09-06 15:03:51 -07:00
Ken Thompson
18f2e360a0 composit literals 
plateau - more to come

R=rsc
OCL=34413
CL=34413
 2009-09-05 20:32:24 -07:00
Ken Thompson
2d73b7f7f0 bug slicing array - cap is huge 
R=rsc
OCL=33936
CL=33936
 2009-08-26 19:19:07 -07:00
Rob Pike
87f2208bda rename runtime internals to have modern names (array->slice etc) 
R=rsc
DELTA=444  (179 added, 177 deleted, 88 changed)
OCL=33847
CL=33849
 2009-08-25 15:54:25 -07:00
Russ Cox
3e98a40793 bug188 - sort(x) 
R=ken
OCL=33123
CL=33123
 2009-08-12 15:58:31 -07:00
Russ Cox
a92610208e delete code for forward type declarations 
R=ken
OCL=33108
CL=33113
 2009-08-12 14:41:13 -07:00
Russ Cox
866b272336 bug186 - f(iota) 
R=ken
OCL=33051
CL=33051
 2009-08-11 17:05:22 -07:00
Russ Cox
6be0f50b97 bug159 
R=ken
OCL=32902
CL=32914
 2009-08-07 16:47:54 -07:00
Russ Cox
39b12e2dcb bug185 - return b,a from func() (a,b int) 
R=ken
OCL=32900
CL=32900
 2009-08-07 14:38:31 -07:00
Russ Cox
d1ee5d6e8f bug184 - assignment compatibility in unpacked multireturn 
R=ken
OCL=32890
CL=32894
 2009-08-07 14:00:18 -07:00
Russ Cox
6c2738eb43 bug181 - type T *struct { T } is an invalid embedded type 
R=ken
OCL=32886
CL=32886
 2009-08-07 13:14:01 -07:00
Russ Cox
b648716ee9 forward declarations not necessary. 
still to do:
	* initializer cycle detection
	* nicer error for type checking cycles

R=ken
OCL=32855
CL=32880
 2009-08-07 12:50:26 -07:00
Russ Cox
2609731736 delay range processing. old2new is gone 
R=ken
OCL=32780
CL=32780
 2009-08-05 02:33:30 -07:00
Russ Cox
54b403723b delay := processing 
R=ken
OCL=32772
CL=32772
 2009-08-05 00:42:44 -07:00
Russ Cox
dbe004efe4 delayed evaluation of var blocks 
R=ken
OCL=32750
CL=32753
 2009-08-04 16:53:06 -07:00
Russ Cox
f7a867e1a6 move select into its own file. 
split into typecheck + walk

R=ken
OCL=32726
CL=32726
 2009-08-04 12:57:48 -07:00
Russ Cox
d8c19c80dc type checking of assignments, switch, if, for 
R=ken
OCL=32716
CL=32720
 2009-08-04 10:26:29 -07:00
Russ Cox
9dc22b6d6f more 6g reorg; checkpoint. 
typecheck.c is now responsible for all type checking
except for assignment and function argument "..."

R=ken
OCL=32661
CL=32667
 2009-08-03 11:58:52 -07:00
Russ Cox
a2b8e38766 checkpoint; still plenty to clean up 
R=ken
OCL=32576
CL=32580
 2009-07-31 09:29:28 -07:00
Russ Cox
b754b4348f delete some code from walkexpr that is now 
handled by typecheck.

second switch is gone

move floating point minus into back end

R=ken
OCL=32558
CL=32558
 2009-07-30 18:56:44 -07:00
Russ Cox
ff3a73b407 typechecking checkpoint. 
started to move typechecking to another file.
can build entire tree still, but lots of work
is duplicated.  much to clean up.

R=ken
OCL=32536
CL=32543
 2009-07-30 16:53:08 -07:00
Russ Cox
9271c6402e introduce typecheck pass before walkexpr. 
not complete but compiler still works.

R=ken
OCL=32424
CL=32426
 2009-07-29 12:47:51 -07:00
Russ Cox
056940d84b convert walkexpr to take Node**; drop indir 
R=ken
OCL=32421
CL=32421
 2009-07-29 12:00:34 -07:00
Russ Cox
18840f5429 constant keys for array initializers 
R=ken
OCL=32261
CL=32261
 2009-07-27 17:58:25 -07:00
Russ Cox
a587d9a73f multiple return in := bug 
R=ken
OCL=32253
CL=32253
 2009-07-27 16:59:10 -07:00
Russ Cox
059bbdd340 print(1<<x) 
R=ken
OCL=32252
CL=32252
 2009-07-27 16:17:09 -07:00
Russ Cox
811e59f2fa named string type bugs 
R=ken
OCL=32244
CL=32244
 2009-07-27 15:16:28 -07:00
Russ Cox
03b25a92a3 catch 
a := true;
	a |= a;
in the front end.

R=ken
OCL=32240
CL=32243
 2009-07-27 14:55:14 -07:00
Russ Cox
f664d0e904 explain selectsend problem 
R=ken
OCL=31865
CL=31867
 2009-07-20 13:29:56 -07:00
Russ Cox
35e5906f91 another baby step. 
excluding import data,
no yacc node has type Type* anymore.

0 reduce/reduce conflicts.

R=ken
OCL=31793
CL=31795
 2009-07-17 14:42:14 -07:00
Russ Cox
db508ccbff baby step: const decls can refer to future 
consts in the same factored block

	const (
		X = Y;
		Y = 2;
	)

R=ken
OCL=31782
CL=31782
 2009-07-17 13:38:16 -07:00
Russ Cox
e52e9ca82e another step toward eliminating forward declarations. 
introduce NodeList* type in compiler to replace OLIST.
this clarifies where lists can and cannot occur.
list append and concatenation are now cheap.
the _r rules are gone from yacc.
rev and unrev are gone.
no more lists of lists.

the representation of assignments is a bit clunkier.
split into OAS (1=1) and OAS2 (2 or more on one side).

delete dead chanrecv3 code.

delay construction of func types.

R=ken
OCL=31745
CL=31762
 2009-07-17 01:00:44 -07:00
Russ Cox
be16caf872 step toward no function prototypes. 
delay evaluation of most types (all but func)
from parse time to type check time.

R=ken
OCL=31585
CL=31585
 2009-07-13 23:38:39 -07:00
Russ Cox
0dadc4fe4f cleanup in preparation for new scoping. 
walkstate -> walkstmt
walktype -> walkexpr; stmts moved to walkstmt

walktype and friends have a final Node **init
argument that can have side effects appended,
making it more explicit when they do and do not happen.
this replaces the old global addtop and addtotop.

delete switch map and interface conversion cases
(dropped from the language months ago).

R=ken
OCL=31465
CL=31468
 2009-07-10 16:29:26 -07:00
Ken Thompson
5ff7d84892 segment fault 
R=rsc
OCL=31396
CL=31396
 2009-07-09 11:41:06 -07:00
Russ Cox
541e638f9b 6g, 8g: generate data structures for new reflect interface (CL 31107) 
R=ken
OCL=31122
CL=31278
 2009-07-07 11:03:04 -07:00
Russ Cox
0aa1b1508a shift typechecking bugs 
x << "a"
	1 << int(2)

R=ken
OCL=31244
CL=31244
 2009-07-06 23:33:17 -07:00
Russ Cox
74b546aefd statements after panicln are unreachable, just like after panic. 
missing break after error.

dot symbol bug fix: leave sym alone
(was incorrect for inserted cross-package dots).

R=ken
OCL=31234
CL=31236
 2009-07-06 22:25:54 -07:00
Russ Cox
d436a70193 allow conversion to interface type 
when implicit assignment would have been okay.

R=ken
OCL=31225
CL=31227
 2009-07-06 17:20:48 -07:00
Ken Thompson
6bb3c48d3d another seg fault 
R=r
OCL=31156
CL=31156
 2009-07-04 13:59:08 -07:00
Russ Cox
75fe1303c1 maps have == so maps are okay as map keys. 
alignment issue is fixed.

R=ken
OCL=31124
CL=31144
 2009-07-03 09:44:59 -07:00
Russ Cox
70a273476b better error; clean up lineno in a few places 
wreck.mtv=; cat x.go
package main
var x = string.Split()
wreck.mtv=; 6g x.go
x.go:2: type string used as expression
x.go:2: undefined DOT Split on string
x.go:3: illegal types for operand: AS
	undefined
wreck.mtv=;

BUG=1938751
R=ken
OCL=30766
CL=30766
 2009-06-25 16:32:33 -07:00
Russ Cox
111ae83bb7 6g: update for spec change CL 30586 
R=ken
OCL=30593
CL=30756
 2009-06-25 14:44:45 -07:00
Russ Cox
0aef57e37f fix a 6g crash after type errors. 
do not bother warning about marks left
on stack after syntax errors.

leave OCONV nodes in tree to avoid type errors
arising from multiple walks.

R=ken
OCL=30639
CL=30662
 2009-06-23 15:30:59 -07:00
Russ Cox
7f3eb2738f implement new spec language regarding conversions 
R=ken
OCL=30519
CL=30534
 2009-06-19 14:00:53 -07:00
Russ Cox
8f4af6d205 gc: grammar cleanup: 
* no longer distinguishes const, var, type, package names.
  * all the predefined names are not tokens anymore.

R=ken
OCL=29326
CL=29985
 2009-06-06 12:46:38 -07:00
Russ Cox
ea7f5505d1 zero struct in T{} 
R=ken
OCL=29849
CL=29849
 2009-06-03 16:10:13 -07:00
Russ Cox
f1f970ad21 minor cleanup, 64-bit /= and %= on 32-bit 
R=ken
OCL=29806
CL=29808
 2009-06-02 23:21:58 -07:00
Ken Thompson
c17ce9f94f prevent multiple similar errors 
in complex literals. side effect is
fix of error in initializerr.go

R=r
OCL=29667
CL=29667
 2009-05-31 13:02:24 -07:00
Russ Cox
d6a9817051 bug157 
R=ken
OCL=29651
CL=29653
 2009-05-30 21:18:15 -07:00
Russ Cox
0a6d83567e print uint64 as uint64. 
R=ken
OCL=29568
CL=29570
 2009-05-28 22:24:03 -07:00
Ken Thompson
b3f303ec9a bug 153 
R=r
OCL=29479
CL=29479
 2009-05-27 18:37:02 -07:00
Ken Thompson
64c3fe05bf string([]int) conversion 
R=r
OCL=29466
CL=29466
 2009-05-27 15:38:02 -07:00
Russ Cox
a8e4ed6a3d 8g: 64-bit arithmetic and assorted bug fixes; 
can run 64-bit sieve and powser.
interfaces are limping along.
next hurdle is floating point.

R=ken
OCL=29418
CL=29423
 2009-05-26 21:07:26 -07:00
Ken Thompson
b46e7c4d3c bug 152 
R=r
OCL=29419
CL=29419
 2009-05-26 19:48:39 -07:00
Ken Thompson
51ddddc67e bug 151 
R=r
OCL=29409
CL=29409
 2009-05-26 16:30:35 -07:00
Ken Thompson
850cd6a2fe bug 150 
R=r
OCL=29405
CL=29405
 2009-05-26 15:56:37 -07:00
Ken Thompson
4238b18344 1. check for dups in complex literals 
structtype{a:1, a:2}
   maptypetype{"xx":1, "xx":2}
   arraytypetype{5:1, 5:2}
2. bug in registerization concerning
   alias of a struct and one of its elements
3. code optimization of struct.field
   (which exposed bug in 2)

R=r
OCL=29315
CL=29315
 2009-05-23 15:34:29 -07:00
Russ Cox
f4d3d22a94 enforce channel direction 
R=ken
OCL=29209
CL=29216
 2009-05-21 17:32:44 -07:00
Ken Thompson
bba10b3f49 some array init bugs 
renamed 6g/(gen|align|obj).c

R=r
OCL=29205
CL=29205
 2009-05-21 15:44:06 -07:00
Russ Cox
8b6b380605 stricter rules for assignment. 
when assigning a multifield object
(structs or arrays of structs) they
must not contain any fields that could
not be assigned individually.

R=ken
OCL=29192
CL=29194
 2009-05-21 14:06:24 -07:00
Ken Thompson
a016081f43 added key:val extension to 
structure and array literals

R=r
OCL=29190
CL=29190
 2009-05-21 13:46:07 -07:00
Russ Cox
23e62d169f stricter interface conversion rule: i.(T) 
must have non-nil i.

R=ken
OCL=29136
CL=29136
 2009-05-20 18:23:19 -07:00
Russ Cox
a39bae095a ifaceop was being called with integers 
that came from two different enums.
spilt into ifacecvt and ifaceop depending
on which enum the argument is.

R=ken
OCL=29122
CL=29122
 2009-05-20 15:09:50 -07:00
Russ Cox
2da5022bcf change representation of interface values. 
this is not a user-visible change.

before, all interface values were

	struct Itype {
		Sigt *type;
		Sigi *inter;
		void *method[n];
	}

	struct Iface {
		void *addr;
		Itype *itype;
	}

the itype is basically a vtable, but it's unnecessary
if the static type is interface{ }.
for interface values with static type empty, the
new representation is

	struct Eface {
		void *addr;
		Sigt *type;
	}

this complicates the code somewhat, but
it reduces the number of Itypes that
have to be computed and cached,
it opens up opportunities to avoid function
calls in a few common cases,
and it will make it possible to lay out
interface{} values at compile time,
which i think i'll need for the new reflection.

R=ken
OCL=28701
CL=29121
 2009-05-20 14:57:55 -07:00
Russ Cox
47e5152790 fix implicit star for range on *map, *[]. 
do not update lineno from ONAME nodes,
	because they have declaration lineno not use.
show actual name in top-level statement error.

before
runtime.a:7: x.go:5: walkstate: NAME not a top level statement

after
x.go:14: walkstate: runtime.Goexit not a top level statement

R=ken
OCL=29113
CL=29116
 2009-05-20 14:24:23 -07:00
Ken Thompson
b91a043d02 static initialization of slices 
R=r
OCL=29016
CL=29016
 2009-05-18 22:11:22 -07:00
Ken Thompson
62231e91d0 static initialization with DATA statements 
structs and arrays are done
slices and maps are yet to do

R=r
OCL=28977
CL=28977
 2009-05-17 19:16:16 -07:00
Rob Pike
a8db4593ab fix spelling error in message 
R=ken
OCL=28814
CL=28814
 2009-05-14 09:59:16 -07:00
Russ Cox
b3533dfd72 6g: 
new type equality restrictions
	better handling of renamed packages
	"sys" is no longer available to programs

R=ken
OCL=28553
CL=28578
 2009-05-08 15:40:31 -07:00
Russ Cox
d4fa253837 eqtype(t1, t2, 0) => eqtype(t1, t2) 
R=ken
OCL=28559
CL=28562
 2009-05-08 14:40:38 -07:00
Russ Cox
401a95aa83 if a struct s contains an anonymous interface value 
with method m, s.m() is ok and m now shows up
in s's method set for interface runtime.

see http://cl/28419-p2 for new test interface10.go.

R=ken
OCL=28420
CL=28423
 2009-05-07 13:42:47 -07:00
Russ Cox
b5e212ffdd 6g: error messages 
replace "shape error across CALL" with more information.

x.go:7: not enough arguments to CALL
	a int, b int
	int
x.go:10: assignment count mismatch: 3 = 2
x.go:12: too many arguments to RETURN
	[no arguments expected]
	int, int, int

also leave type alone after conversion failure,
for later errors:

bug049.go:6: cannot convert nil constant to string
bug049.go:6: illegal types for operand: EQ
	string
	nil		# this used to be blank

R=ken
OCL=28405
CL=28407
 2009-05-07 10:29:35 -07:00
Russ Cox
a6ba5ec535 6g: new interface rules (code got simpler!) 
R=ken
OCL=28374
CL=28378
 2009-05-06 17:05:35 -07:00
Russ Cox
83e976d53e bug146: array/slice conversion before I left missed conversions 
R=ken
OCL=28120
CL=28124
 2009-04-30 13:49:58 -07:00
Ken Thompson
b03b541b7a recognize a defined constant 
as a new name in a later declaration
(bug 144)

R=r
OCL=27850
CL=27850
 2009-04-24 16:43:31 -07:00
Ken Thompson
190a540892 2 minor bugs. 
lv context for some [] operations
calling implicit(*map) before walk.

R=r
OCL=27706
CL=27706
 2009-04-21 19:52:13 -07:00
Ken Thompson
b5e7562191 supply default indirection to 
map indexing - bug 143

R=r
OCL=27695
CL=27695
 2009-04-21 17:00:08 -07:00
Ken Thompson
34b6f642de mixed old/new declaration 
exact spec:
a) must be a multi-assignment w :=
b) a proper subset of the lhs
   can be declared in same block
   with the same type with no
   "redeclaration" error

R=r
OCL=27610
CL=27610
 2009-04-18 13:58:04 -07:00
Russ Cox
3ea8d854a3 make string(array) take []byte only (and thus *[10]byte but not [10]byte) 
R=ken
OCL=27581
CL=27585
 2009-04-16 23:07:30 -07:00
Russ Cox
1cb3b7d124 panicln: emit just one newline 
R=ken
OCL=27537
CL=27545
 2009-04-15 22:38:09 -07:00
Russ Cox
65d397f747 compiler implementation of array slice change 
R=ken
OCL=27533
CL=27533
 2009-04-15 20:27:22 -07:00
Russ Cox
a62467af93 fix stringrange test 
R=ken
OCL=27353
CL=27353
 2009-04-13 05:31:44 -07:00
Ken Thompson
a91a8042b4 range over strings 
R=r
OCL=27332
CL=27332
 2009-04-10 19:49:31 -07:00
Russ Cox
f95da9a639 yet another attempt at auto-linking 
store only the original import path string (+ .a)
if 6g resolves it to an archive file.
let 6l re-resolve the .a at link time.

this lets libraries build against an archive
in the current directory but get used
against an installed archive.

R=r
OCL=27244
CL=27244
 2009-04-08 22:45:33 -07:00
Russ Cox
3067781ab9 func f() (int, int); 
x := f();

used to give
	fatal error: dowidth fn struct struct { int; int }

now gives
	assignment count mismatch: 1 = 2

R=ken
OCL=27198
CL=27201
 2009-04-07 22:20:37 -07:00
Russ Cox
d50c70d261 set line number for errors produced during walkstate. 
R=ken
OCL=27145
CL=27145
 2009-04-06 22:17:46 -07:00
Russ Cox
907cb4f1e6 fix both of anton's bugs: 
* make([100]int) was being compiled to
	make([]int), kind of.
* []this = [100]that was working for any this, that.

turned up a typo in pipe_test.go

R=ken
OCL=27081
CL=27081
 2009-04-03 23:20:51 -07:00
Russ Cox
8e54729b5a move alignment calculations into gc 
R=ken
OCL=26914
CL=26914
 2009-03-30 17:09:28 -07:00
Russ Cox
54aa835b44 range over channels. 
also fix multiple-evaluation bug in range over arrays.

R=ken
OCL=26576
CL=26576
 2009-03-20 11:32:58 -07:00
Russ Cox
f7772627ad fix b/1722502 
BUG=1722502
R=ken
OCL=26526
CL=26526
 2009-03-18 19:20:54 -07:00
Russ Cox
8f194bf5ff make 6g constants behave as ken proposes. (i hope.) 
various bug fixes and tests involving constants.

test/const1.go is the major new test case.

R=ken
OCL=26216
CL=26224
 2009-03-12 19:04:38 -07:00
Ken Thompson
6eb54cb05b chan flags close/closed installed 
runtime not finished.

R=r
OCL=26217
CL=26217
 2009-03-12 17:55:11 -07:00
Ken Thompson
bb02e481d2 added bitclear operators &^ and &^= 
R=r
OCL=26152
CL=26152
 2009-03-11 19:59:35 -07:00
Ken Thompson
767845b6fa bug 125 
R=r
OCL=26146
CL=26146
 2009-03-11 17:37:04 -07:00
Ken Thompson
d27e9f528d bug086 
R=r
OCL=26090
CL=26090
 2009-03-10 19:16:31 -07:00
Ken Thompson
bf983477a2 new switch implementation 
in preparation of type switch.
no functional change (yet).

R=r
OCL=25784
CL=25788
 2009-03-05 15:49:34 -08:00
Russ Cox
955638e2fb disallow ordinary-type.(T), as in spec. 
R=ken
OCL=25705
CL=25705
 2009-03-04 14:50:25 -08:00