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816e3da26d
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Author SHA1 Message Date
Austin Clements
816e3da26d Make Value always represent an l-value and never a generic 
container for values.

Instead of having one evaluator function that returns a
generic Value, there is now an evaluator function for each
generalized type that simply returns a native type.

The compiler is more type-safe now because there are almost no
type conversions at evaluation time and it's impossible to
invoke a nil evaluator function during evaluation.  This also
makes ideals and pointers really clean.

As an added bonus, expression evaluation should be faster
because it doesn't require heap allocation for every
intermediate value, type switches, or lots of conversions to
and from Value.  It also involves fewer function calls.

R=rsc
APPROVED=rsc
DELTA=431  (280 added, 115 deleted, 36 changed)
OCL=31705
CL=31709
 2009-07-15 17:56:17 -07:00
Rob Pike
3fc7cfd55f improve server handling of errors now that Decoder grabs full message. 
R=rsc
DELTA=23  (4 added, 7 deleted, 12 changed)
OCL=31701
CL=31703
 2009-07-15 16:11:14 -07:00
Rob Pike
e76a335ada make the low-level encoder and decoder private and have them access byte.Buffers rather 
than io.Readers and io.Writers.
change the Encoder/Decoder protocol so that each message is preceded by its length in bytes.

R=rsc
DELTA=468  (119 added, 23 deleted, 326 changed)
OCL=31700
CL=31702
 2009-07-15 16:10:17 -07:00
Rob Pike
dc8c447689 post-submit tweaks to previous cl 
R=rsc
DELTA=5  (4 added, 1 deleted, 0 changed)
OCL=31690
CL=31692
 2009-07-15 12:38:50 -07:00
Austin Clements
9211a7d413 Beginnings of a Go interpreter. This implements basic and 
pointer types, supports literals, identifiers, type-checking
most unary and binary operators, "compiling" a few unary and
binary operators, and assignment and declaration statements.

R=rsc
APPROVED=rsc
DELTA=1751  (1751 added, 0 deleted, 0 changed)
OCL=31309
CL=31691
 2009-07-15 11:59:13 -07:00
Rob Pike
8071cdf724 handle errors better: 
1) terminate outstanding calls on the client when we see EOF from server
	2) allow data to drain on server before closing the connection

R=rsc
DELTA=41  (23 added, 4 deleted, 14 changed)
OCL=31687
CL=31689
 2009-07-15 11:47:29 -07:00
Russ Cox
aa1e8064b2 change HTTP access for RPC. 
1. use CONNECT instead of GET.
   CONNECT has exactly the meaning
   we want; most of the time people
   connect to ip:port; we're connecting
   to /_goRPC_

2. wait for a successful HTTP response
   before assuming we are connected to
   the RPC protocol.  this allows better
   error reporting and also keeps the
   protocol alternating between speakers,
   so that the buffering in the HTTP request
   reader cannot accidentally eat some
   RPC bytes too.

gotest sometimes hangs, but not in HTTP.

gotest -match=Unknown hangs every few runs
even in a clean client.

R=r
DELTA=117  (57 added, 44 deleted, 16 changed)
OCL=31656
CL=31685
 2009-07-15 10:49:47 -07:00
Austin Clements
8b7951495c Implement forking debugged processes. 
R=rsc
APPROVED=rsc
DELTA=81  (53 added, 3 deleted, 25 changed)
OCL=31651
CL=31675
 2009-07-15 10:17:56 -07:00
Robert Griesemer
3d486d0d26 - do not collect BUG comments w/o bug description 
R=rsc
DELTA=17  (8 added, 0 deleted, 9 changed)
OCL=31670
CL=31674
 2009-07-15 10:12:57 -07:00
Austin Clements
8d8245623f Add a dummy WaitStatus.TrapCause for Darwin to unbreak the build. 
R=gri
APPROVED=gri
DELTA=5  (5 added, 0 deleted, 0 changed)
OCL=31673
CL=31673
 2009-07-15 10:12:06 -07:00
Austin Clements
d0e29f2852 Pretty printer for os.Waitmsg 
R=rsc
APPROVED=rsc
DELTA=49  (49 added, 0 deleted, 0 changed)
OCL=31568
CL=31671
 2009-07-15 09:58:42 -07:00
Rob Pike
964b6cf352 add HTTP support 
R=rsc
DELTA=159  (110 added, 29 deleted, 20 changed)
OCL=31646
CL=31652
 2009-07-14 20:47:39 -07:00
Austin Clements
b6e6663946 Return ptrace event message when there's no error instead of 
only when there's an error.

R=rsc
APPROVED=rsc
DELTA=3  (0 added, 2 deleted, 1 changed)
OCL=31650
CL=31650
 2009-07-14 18:05:29 -07:00
Rob Pike
ba9d697336 allow user to override the Usage function 
R=gri
DELTA=15  (6 added, 5 deleted, 4 changed)
OCL=31649
CL=31649
 2009-07-14 17:44:20 -07:00
Robert Griesemer
eb815c0fa2 fixed typo 
TBR=r
OCL=31647
CL=31647
 2009-07-14 17:08:09 -07:00
Robert Griesemer
4fb8f44ea7 - interface and comments cleanup 
R=rsc
DELTA=33  (1 added, 3 deleted, 29 changed)
OCL=31620
CL=31642
 2009-07-14 16:30:20 -07:00
Robert Griesemer
59ee0373fc - removed TODO, minor adjustments 
R=rsc
DELTA=16  (6 added, 1 deleted, 9 changed)
OCL=31638
CL=31641
 2009-07-14 16:30:06 -07:00
Russ Cox
f752e909dc darwin ptrace constants 
R=austin
DELTA=42  (37 added, 5 deleted, 0 changed)
OCL=31618
CL=31633
 2009-07-14 15:29:29 -07:00
Austin Clements
c105de748d Implementation of process tracing using Linux's ptrace. 
R=rsc
APPROVED=rsc
DELTA=1543  (1528 added, 0 deleted, 15 changed)
OCL=31570
CL=31630
 2009-07-14 15:12:10 -07:00
Austin Clements
14bb806cb4 Support ptracing of fork'd children. 
R=rsc
APPROVED=rsc
DELTA=26  (22 added, 1 deleted, 3 changed)
OCL=31613
CL=31629
 2009-07-14 15:09:39 -07:00
Austin Clements
40f406afc4 Zero unused syscall arguments. 
R=rsc
APPROVED=rsc
DELTA=12  (12 added, 0 deleted, 0 changed)
OCL=31619
CL=31621
 2009-07-14 13:59:54 -07:00
Rob Pike
b07af158a4 improve rpc code. more robust. more tests. 
R=rsc
DELTA=186  (133 added, 20 deleted, 33 changed)
OCL=31611
CL=31616
 2009-07-14 13:23:14 -07:00
Austin Clements
bc2fda9c89 Regenerate Linux 386 syscall bindings to add ptrace. 
R=rsc
APPROVED=rsc
DELTA=82  (80 added, 2 deleted, 0 changed)
OCL=31610
CL=31612
 2009-07-14 11:59:19 -07:00
Austin Clements
9df528740a Syscall wrappers for ptrace and supporting wait-related flags. 
R=rsc
APPROVED=rsc
DELTA=311  (308 added, 3 deleted, 0 changed)
OCL=31569
CL=31606
 2009-07-14 10:53:04 -07:00
Robert Griesemer
e48d8fe091 update remaining files to match new scanner/parser interface 
and use shared error handling infrastructure

R=rsc
DELTA=109  (3 added, 86 deleted, 20 changed)
OCL=31600
CL=31605
 2009-07-14 10:46:18 -07:00
Robert Griesemer
5945b25158 - adjust to new token.Position definition 
R=rsc
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=31574
CL=31604
 2009-07-14 10:45:57 -07:00
Robert Griesemer
2d58fa6f18 - use new scanner error handling code 
R=rsc
DELTA=109  (0 added, 87 deleted, 22 changed)
OCL=31573
CL=31603
 2009-07-14 10:45:43 -07:00
Robert Griesemer
a010d45caa - adjust to new scanner interface (pass filename to Init) 
- delete error handling code which is not needed anymore

R=rsc
DELTA=83  (0 added, 65 deleted, 18 changed)
OCL=31572
CL=31602
 2009-07-14 10:45:22 -07:00
Robert Griesemer
14228f3898 - added Filename field to token.Position 
- handle //line filename:line comments in scanner
- moved error handling code used by various scanner clients
  to errors.go
- added extra tests

R=rsc
DELTA=385  (343 added, 18 deleted, 24 changed)
OCL=31551
CL=31601
 2009-07-14 10:44:57 -07:00
Russ Cox
10e995fba8 dead code 
R=r
DELTA=20  (0 added, 20 deleted, 0 changed)
OCL=31584
CL=31598
 2009-07-14 09:28:42 -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
a6799963ef update 6g to new REGARG convention. 
silence gcc warning.

R=ken
OCL=31583
CL=31583
 2009-07-13 23:30:30 -07:00
Russ Cox
e11447f7da bug148. 
R=ken
OCL=31582
CL=31582
 2009-07-13 23:29:44 -07:00
Kai Backman
60d223a418 added missing pieces required by reflection 
R=rsc
APPROVED=rsc
DELTA=61  (40 added, 18 deleted, 3 changed)
OCL=31502
CL=31580
 2009-07-13 22:06:28 -07:00
Kai Backman
0e2cce70cb tiny naming cleanup 
R=rsc
APPROVED=rsc
DELTA=17  (0 added, 0 deleted, 17 changed)
OCL=31503
CL=31579
 2009-07-13 22:04:24 -07:00
Kai Backman
7258bac6e8 fix bug in codegen when we modified move instruction instead 
of text.

R=rsc
APPROVED=rsc
DELTA=3  (1 added, 2 deleted, 0 changed)
OCL=31575
CL=31575
 2009-07-13 20:33:59 -07:00
Austin Clements
ffb4b0d7b7 Avoid clash between os.WRUSAGE and Linux's WALL flag. 
R=rsc
APPROVED=rsc
DELTA=5  (4 added, 0 deleted, 1 changed)
OCL=31564
CL=31567
 2009-07-13 19:28:00 -07:00
Russ Cox
9e2f2fcd2e compilers were inconsistent about 
whether no register argument was
REGARG == 0 or REGARG < 0.
use REGARG < 0 because arm needs 0 for R0.

R=ken
OCL=31562
CL=31566
 2009-07-13 19:20:43 -07:00
Austin Clements
da1da8d07e Add accessor for SIGTRAP cause in wait status 
R=rsc
APPROVED=rsc
DELTA=7  (7 added, 0 deleted, 0 changed)
OCL=31563
CL=31565
 2009-07-13 19:20:38 -07:00
Russ Cox
218c393029 add LockOSThread and UnlockOSThread to 
runtime package for use by debugger,
which needs to make sure that all ptrace calls
about a given pid come from the same thread.

R=r
DELTA=175  (90 added, 63 deleted, 22 changed)
OCL=31546
CL=31558
 2009-07-13 17:28:39 -07:00
Rob Pike
9126b75e35 rpc. 
client library.
muxes on both ends.

R=rsc
DELTA=178  (132 added, 26 deleted, 20 changed)
OCL=31541
CL=31556
 2009-07-13 16:52:57 -07:00
Russ Cox
29e93590b0 fix undefined function error. 
before:
	mainstart: undefined: main·init in mainstart
	mainstart: branch out of range in mainstart
	(95)    CALL    ,0(PC) [main·init]
	mainstart: undefined: main·main in mainstart
	mainstart: branch out of range in mainstart
	(97)    CALL    ,0(PC) [main·main]
	mainstart: doasm: notfound from=6f to=6f (95)    CALL    ,
	mainstart: doasm: notfound from=6f to=6f (97)    CALL    ,
	mainstart: doasm: notfound from=6f to=6f (95)    CALL    ,
	mainstart: doasm: notfound from=6f to=6f (97)    CALL    ,
	mainstart: doasm: notfound from=6f to=6f (95)    CALL    ,
	mainstart: doasm: notfound from=6f to=6f (97)    CALL    ,

after:
	mainstart: undefined: main·init in mainstart
	mainstart: undefined: main·main in mainstart

R=r
DELTA=7  (1 added, 0 deleted, 6 changed)
OCL=31555
CL=31555
 2009-07-13 16:48:09 -07:00
Russ Cox
8afc6008a8 add note about once and closures 
R=r
DELTA=13  (13 added, 0 deleted, 0 changed)
OCL=31535
CL=31549
 2009-07-13 15:54:41 -07:00
Robert Griesemer
32cd887574 - handle type forward declarations correctly 
R=r
DELTA=8  (6 added, 0 deleted, 2 changed)
OCL=31537
CL=31537
 2009-07-13 13:55:39 -07:00
Rob Pike
efb918b7db the beginnings of an rpc service. 
server side only; no client help yet (but it's easy).
no http yet.
service is synchronous.
all this will improve.

R=rsc
DELTA=403  (403 added, 0 deleted, 0 changed)
OCL=31522
CL=31536
 2009-07-13 12:58:14 -07:00
Rob Pike
b2a66adc59 the name of the type was being sent twice. drop the outer instance. 
R=rsc
DELTA=10  (5 added, 1 deleted, 4 changed)
OCL=31523
CL=31526
 2009-07-13 11:41:02 -07:00
Robert Griesemer
7b7b83ba1b ebnflint command 
- basic verification of EBNF grammars
- tested with (and has testcase for) go_spec.html

R=rsc
DELTA=150  (148 added, 0 deleted, 2 changed)
OCL=31481
CL=31517
 2009-07-13 10:26:58 -07:00
Robert Griesemer
ef4347f19e Basic EBNF package: 
- parsing of EBNF grammars
- basic consistency checks

R=rsc
DELTA=695  (695 added, 0 deleted, 0 changed)
OCL=31479
CL=31516
 2009-07-13 10:10:56 -07:00
Kai Backman
092d6290d0 fixed typo where output arguments where pushed on to R0 
instead of SP.

R=rsc
APPROVED=rsc
DELTA=13  (3 added, 7 deleted, 3 changed)
OCL=31488
CL=31501
 2009-07-12 22:12:33 -07:00
Kai Backman
7842b03f70 Fixed minor typo in asm file. 
R=rsc
APPROVED=rsc
DELTA=1  (0 added, 0 deleted, 1 changed)
OCL=31487
CL=31500
 2009-07-12 22:12:19 -07:00