| \ SEE.FS highend SEE for ANSforth 16may93jaw |
\ SEE.FS highend SEE for ANSforth 16may93jaw |
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|
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\ Copyright (C) 1995,2000 Free Software Foundation, Inc. |
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|
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\ This file is part of Gforth. |
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|
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\ Gforth is free software; you can redistribute it and/or |
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\ modify it under the terms of the GNU General Public License |
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\ as published by the Free Software Foundation; either version 2 |
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\ of the License, or (at your option) any later version. |
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|
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\ This program is distributed in the hope that it will be useful, |
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\ but WITHOUT ANY WARRANTY; without even the implied warranty of |
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\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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\ GNU General Public License for more details. |
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|
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\ You should have received a copy of the GNU General Public License |
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\ along with this program; if not, write to the Free Software |
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\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
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|
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| \ May be cross-compiled |
\ May be cross-compiled |
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|
| \ I'm sorry. This is really not "forthy" enough. |
\ I'm sorry. This is really not "forthy" enough. |
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| \ Ideas: Level should be a stack |
\ Ideas: Level should be a stack |
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|
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require look.fs |
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require termsize.fs |
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require wordinfo.fs |
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[IFUNDEF] .name |
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: id. ( nt -- ) \ gforth |
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\G Print the name of the word represented by @var{nt}. |
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\ this name comes from fig-Forth |
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name>string type space ; |
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|
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' id. alias .id ( nt -- ) |
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\G F83 name for @code{id.}. |
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|
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' id. alias .name ( nt -- ) |
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\G Gforth <=0.5.0 name for @code{id.}. |
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|
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[THEN] |
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| decimal |
decimal |
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|
| \ Screen format words 16may93jaw |
\ Screen format words 16may93jaw |
| : level- -7 Level +! ; |
: level- -7 Level +! ; |
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|
| VARIABLE nlflag |
VARIABLE nlflag |
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VARIABLE uppercase \ structure words are in uppercase |
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|
| DEFER nlcount ' noop IS nlcount |
DEFER nlcount ' noop IS nlcount |
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|
| : nl nlflag on ; |
: nl nlflag on ; |
| : (nl) nlcount |
: (nl) nlcount |
| XPos @ Level @ = ?Exit |
XPos @ Level @ = IF EXIT THEN \ ?Exit |
| C-Formated @ IF |
C-Formated @ IF |
| C-Output @ |
C-Output @ |
| IF C-Clearline @ IF 80 XPos @ - spaces |
IF C-Clearline @ IF cols XPos @ - spaces |
| ELSE cr THEN |
ELSE cr THEN |
| 1 YPos +! 0 XPos ! |
1 YPos +! 0 XPos ! |
| Level @ spaces |
Level @ spaces |
| |
|
| : warp? ( len -- len ) |
: warp? ( len -- len ) |
| nlflag @ IF (nl) nlflag off THEN |
nlflag @ IF (nl) nlflag off THEN |
| XPos @ over + 79 u> IF (nl) THEN ; |
XPos @ over + cols u>= IF (nl) THEN ; |
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|
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: c-to-upper ( c1 -- c2 ) \ gforth |
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\ nac05feb1999 there is a primitive, toupper, with this function |
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dup [char] a >= over [char] z <= and if bl - then ; |
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|
| : ctype ( adr len -- ) |
: ctype ( adr len -- ) |
| warp? dup XPos +! C-Output @ IF type ELSE 2drop THEN ; |
warp? dup XPos +! C-Output @ |
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IF uppercase @ IF bounds ?DO i c@ c-to-upper emit LOOP |
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uppercase off ELSE type THEN |
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ELSE 2drop THEN ; |
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|
| : cemit 1 warp? |
: cemit 1 warp? |
| over bl = Level @ XPos @ = and |
over bl = Level @ XPos @ = and |
| IF 2drop ELSE XPos +! C-Output @ IF emit ELSE drop THEN |
IF 2drop ELSE XPos +! C-Output @ IF emit ELSE drop THEN |
| THEN ; |
THEN ; |
| |
|
| DEFER .string |
DEFER .string ( c-addr u n -- ) |
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|
| [IFDEF] Green |
[IFDEF] Green |
| VARIABLE Colors Colors on |
VARIABLE Colors Colors on |
| ' (.string) IS .string |
' (.string) IS .string |
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|
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|
| : .struc Str# .string ; |
: .struc |
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uppercase on Str# .string ; |
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|
| \ CODES 15may93jaw |
\ CODES (Branchtypes) 15may93jaw |
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|
| 21 CONSTANT RepeatCode |
21 CONSTANT RepeatCode |
| 22 CONSTANT AgainCode |
22 CONSTANT AgainCode |
| 11 CONSTANT AheadCode |
11 CONSTANT AheadCode |
| 13 CONSTANT WhileCode2 |
13 CONSTANT WhileCode2 |
| 14 CONSTANT Disable |
14 CONSTANT Disable |
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15 CONSTANT LeaveCode |
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|
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|
| \ FORMAT WORDS 13jun93jaw |
\ FORMAT WORDS 13jun93jaw |
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|
| VARIABLE C-Stop |
VARIABLE C-Stop |
| VARIABLE Branches |
VARIABLE Branches |
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|
| VARIABLE BranchPointer |
VARIABLE BranchPointer \ point to the end of branch table |
| VARIABLE SearchPointer |
VARIABLE SearchPointer |
| CREATE BranchTable 500 allot |
|
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\ The branchtable consists of three entrys: |
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\ address of branch , branch destination , branch type |
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|
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CREATE BranchTable 128 cells allot |
| here 3 cells - |
here 3 cells - |
| ACONSTANT MaxTable |
ACONSTANT MaxTable |
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|
| : FirstBranch BranchTable cell+ SearchPointer ! ; |
: FirstBranch BranchTable cell+ SearchPointer ! ; |
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|
| : (BranchAddr?) ( a-addr -- a-addr true | false ) |
: (BranchAddr?) ( a-addr1 -- a-addr2 true | false ) |
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\ searches a branch with destination a-addr1 |
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\ a-addr1: branch destination |
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\ a-addr2: pointer in branch table |
| SearchPointer @ |
SearchPointer @ |
| BEGIN dup BranchPointer @ u< |
BEGIN dup BranchPointer @ u< |
| WHILE |
WHILE |
| 2drop true |
2drop true |
| THEN ; |
THEN ; |
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|
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: MyBranch ( a-addr -- a-addr a-addr2 ) |
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\ finds branch table entry for branch at a-addr |
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dup @ over + |
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BranchAddr? |
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BEGIN |
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WHILE 1 cells - @ |
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over <> |
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WHILE dup @ over + |
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MoreBranchAddr? |
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REPEAT |
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SearchPointer @ 3 cells - |
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ELSE true ABORT" SEE: Table failure" |
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THEN ; |
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|
| \ |
\ |
| \ addrw addrt |
\ addrw addrt |
| \ BEGIN ... WHILE ... AGAIN ... THEN |
\ BEGIN ... WHILE ... AGAIN ... THEN |
| : back? ( n -- flag ) 0< ; |
: back? ( n -- flag ) 0< ; |
| : ahead? ( n -- flag ) 0> ; |
: ahead? ( n -- flag ) 0> ; |
| |
|
| : c-(compile) |
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| Display? IF s" POSTPONE " Com# .string |
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| dup @ look 0= ABORT" SEE: No valid XT" |
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| cell+ count $1F and 0 .string bl cemit |
|
| THEN |
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| cell+ ; |
|
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|
| : c-lit |
: c-lit |
| Display? IF |
Display? IF |
| dup @ dup abs 0 <# #S rot sign #> 0 .string bl cemit |
dup @ dup abs 0 <# #S rot sign #> 0 .string bl cemit |
| THEN |
THEN |
| cell+ ; |
cell+ ; |
| |
|
| : c-@local# |
: .word ( addr xt -- addr ) |
| Display? IF |
look 0= IF |
| S" @local" 0 .string |
drop dup 1 cells - @ dup body> look |
| dup @ dup 1 cells / abs 0 <# #S rot sign #> 0 .string bl cemit |
IF |
| THEN |
nip dup ." <" name>string rot wordinfo .string ." >" |
| cell+ ; |
|
| |
|
| : c-flit |
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| Display? IF |
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| dup f@ scratch represent 0= |
|
| IF 2drop scratch 3 min 0 .string |
|
| ELSE |
ELSE |
| IF '- cemit THEN 1- |
drop ." <" 0 .r ." >" |
| scratch over c@ cemit '. cemit 1 /string 0 .string |
|
| 'E cemit |
|
| dup abs 0 <# #S rot sign #> 0 .string bl cemit |
|
| THEN THEN |
|
| float+ ; |
|
| |
|
| : c-f@local# |
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| Display? IF |
|
| S" f@local" 0 .string |
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| dup @ dup 1 floats / abs 0 <# #S rot sign #> 0 .string bl cemit |
|
| THEN |
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| cell+ ; |
|
| |
|
| : c-laddr# |
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| Display? IF |
|
| S" laddr# " 0 .string |
|
| dup @ dup abs 0 <# #S rot sign #> 0 .string bl cemit |
|
| THEN |
THEN |
| cell+ ; |
ELSE |
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dup cell+ @ immediate-mask and |
| : c-lp+!# |
IF |
| Display? IF |
bl cemit ." POSTPONE " |
| S" lp+!# " 0 .string |
|
| dup @ dup abs 0 <# #S rot sign #> 0 .string bl cemit |
|
| THEN |
THEN |
| cell+ ; |
dup name>string rot wordinfo .string |
| |
|
| : c-s" |
|
| count 2dup + aligned -rot |
|
| Display? |
|
| IF [char] S cemit [char] " cemit bl cemit 0 .string |
|
| [char] " cemit bl cemit |
|
| ELSE 2drop |
|
| THEN ; |
THEN ; |
| |
|
| : c-." |
: c-call |
| count 2dup + aligned -rot |
Display? IF ." call " dup @ body> .word bl cemit THEN cell+ ; |
| Display? |
|
| IF [char] . cemit |
: .name-without ( addr -- addr ) |
| [char] " cemit bl cemit 0 .string |
\ prints a name without () e.g. (+LOOP) or (s") |
| [char] " cemit bl cemit |
dup 1 cells - @ look |
| ELSE 2drop |
IF name>string over c@ '( = IF 1 /string THEN |
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2dup + 1- c@ ') = IF 1- THEN .struc ELSE drop |
| THEN ; |
THEN ; |
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|
| : c-c" |
: c-c" |
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Display? IF nl .name-without THEN |
| count 2dup + aligned -rot |
count 2dup + aligned -rot |
| Display? |
Display? |
| IF [char] C cemit [char] " cemit bl cemit 0 .string |
IF bl cemit 0 .string |
| [char] " cemit bl cemit |
[char] " cemit bl cemit |
| ELSE 2drop |
ELSE 2drop |
| THEN ; |
THEN ; |
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|
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|
| : Forward? ( a-addr true | false -- ) |
: Forward? ( a-addr true | false -- a-addr true | false ) |
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\ a-addr1 is pointer into branch table |
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\ returns true when jump is a forward jump |
| IF dup dup @ swap 1 cells - @ - |
IF dup dup @ swap 1 cells - @ - |
| Ahead? IF true ELSE drop false THEN |
Ahead? IF true ELSE drop false THEN |
| \ only if forward jump |
\ only if forward jump |
| ELSE false THEN ; |
ELSE false THEN ; |
| |
|
| : RepeatCheck |
: RepeatCheck ( a-addr1 a-addr2 true | false -- false ) |
| IF BEGIN 2dup |
IF BEGIN 2dup |
| 1 cells - @ swap dup @ + |
1 cells - @ swap dup @ + |
| u<= |
u<= |
| IF drop S" REPEAT " .struc nl |
IF drop S" REPEAT " .struc nl |
| ELSE S" AGAIN " .struc nl |
ELSE S" AGAIN " .struc nl |
| THEN |
THEN |
| ELSE dup cell+ BranchAddr? Forward? |
ELSE MyBranch cell+ @ LeaveCode = |
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IF S" LEAVE " .struc |
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ELSE |
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dup cell+ BranchAddr? Forward? |
| IF dup cell+ @ WhileCode2 = |
IF dup cell+ @ WhileCode2 = |
| IF nl S" ELSE" .struc level+ |
IF nl S" ELSE" .struc level+ |
| ELSE level- nl S" ELSE" .struc level+ THEN |
ELSE level- nl S" ELSE" .struc level+ THEN |
| THEN |
THEN |
| THEN |
THEN |
| THEN |
THEN |
| |
THEN |
| Debug? |
Debug? |
| IF dup @ + |
IF dup @ + |
| ELSE cell+ |
ELSE cell+ |
| THEN ; |
THEN ; |
| |
|
| : MyBranch ( a-addr -- a-addr a-addr2 ) |
|
| dup @ over + |
|
| BranchAddr? |
|
| BEGIN |
|
| WHILE 1 cells - @ |
|
| over <> |
|
| WHILE dup @ over + |
|
| MoreBranchAddr? |
|
| REPEAT |
|
| SearchPointer @ 3 cells - |
|
| ELSE true ABORT" SEE: Table failure" |
|
| THEN ; |
|
| |
|
| : DebugBranch |
: DebugBranch |
| Debug? |
Debug? |
| IF dup @ over + swap THEN ; \ return 2 different addresses |
IF dup @ over + swap THEN ; \ return 2 different addresses |
| level- nl |
level- nl |
| S" WHILE " .struc |
S" WHILE " .struc |
| level+ |
level+ |
| |
ELSE MyBranch cell+ @ LeaveCode = |
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IF s" 0= ?LEAVE " .struc |
| ELSE nl S" IF " .struc level+ |
ELSE nl S" IF " .struc level+ |
| THEN |
THEN |
| THEN |
THEN |
| THEN |
THEN |
| |
THEN |
| DebugBranch |
DebugBranch |
| cell+ ; |
cell+ ; |
| |
|
| : c-?branch-lp+!# c-?branch cell+ ; |
: c-for |
| : c-branch-lp+!# c-branch cell+ ; |
Display? IF nl S" FOR" .struc level+ THEN ; |
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|
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: c-loop |
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Display? IF level- nl .name-without bl cemit nl THEN |
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DebugBranch cell+ |
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Scan? |
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IF dup BranchAddr? |
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BEGIN WHILE cell+ LeaveCode swap ! |
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dup MoreBranchAddr? |
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REPEAT |
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THEN |
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cell+ ; |
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|
| : c-do |
: c-do |
| Display? IF nl S" DO" .struc level+ THEN ; |
Display? IF nl .name-without level+ THEN ; |
| |
|
| : c-?do |
: c-?do |
| Display? IF nl S" ?DO" .struc level+ THEN |
Display? IF nl S" ?DO" .struc level+ THEN |
| DebugBranch cell+ ; |
DebugBranch cell+ ; |
| |
|
| : c-for |
|
| Display? IF nl S" FOR" .struc level+ THEN ; |
|
| |
|
| : c-next |
|
| Display? IF level- nl S" NEXT " .struc nl THEN |
|
| DebugBranch cell+ cell+ ; |
|
| |
|
| : c-loop |
|
| Display? IF level- nl S" LOOP " .struc nl THEN |
|
| DebugBranch cell+ cell+ ; |
|
| |
|
| : c-+loop |
|
| Display? IF level- nl S" +LOOP " .struc nl THEN |
|
| DebugBranch cell+ cell+ ; |
|
| |
|
| : c-s+loop |
|
| Display? IF level- nl S" S+LOOP " .struc nl THEN |
|
| DebugBranch cell+ cell+ ; |
|
| |
|
| : c--loop |
|
| Display? IF level- nl S" -LOOP " .struc nl THEN |
|
| DebugBranch cell+ cell+ ; |
|
| |
|
| : c-next-lp+!# c-next cell+ ; |
|
| : c-loop-lp+!# c-loop cell+ ; |
|
| : c-+loop-lp+!# c-+loop cell+ ; |
|
| : c-s+loop-lp+!# c-s+loop cell+ ; |
|
| : c--loop-lp+!# c--loop cell+ ; |
|
| |
|
| : c-leave |
|
| Display? IF S" LEAVE " .struc THEN |
|
| Debug? IF dup @ + THEN cell+ ; |
|
| |
|
| : c-?leave |
|
| Display? IF S" ?LEAVE " .struc THEN |
|
| cell+ DebugBranch swap cell+ swap cell+ ; |
|
| |
|
| : c-exit dup 1 cells - |
: c-exit dup 1 cells - |
| CheckEnd |
CheckEnd |
| IF Display? IF nlflag off S" ;" Com# .string THEN |
IF Display? IF nlflag off S" ;" Com# .string THEN |
| THEN |
THEN |
| Debug? IF drop THEN ; |
Debug? IF drop THEN ; |
| |
|
| : c-does> \ end of create part |
|
| Display? IF S" DOES> " Com# .string THEN |
|
| Cell+ cell+ ; |
|
| |
|
| : c-abort" |
: c-abort" |
| count 2dup + aligned -rot |
count 2dup + aligned -rot |
| Display? |
Display? |
| ELSE 2drop |
ELSE 2drop |
| THEN ; |
THEN ; |
| |
|
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[IFDEF] (does>) |
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: c-does> \ end of create part |
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Display? IF S" DOES> " Com# .string THEN |
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maxaligned /does-handler + ; |
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[THEN] |
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|
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[IFDEF] (compile) |
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: c-(compile) |
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Display? |
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IF |
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s" POSTPONE " Com# .string |
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dup @ look 0= ABORT" SEE: No valid XT" |
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name>string 0 .string bl cemit |
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THEN |
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cell+ ; |
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[THEN] |
| |
|
| CREATE C-Table |
CREATE C-Table |
| ' lit A, ' c-lit A, |
' lit A, ' c-lit A, |
| ' @local# A, ' c-@local# A, |
[IFDEF] call ' call A, ' c-call A, [THEN] |
| ' flit A, ' c-flit A, |
[IFDEF] (s") ' (s") A, ' c-c" A, [THEN] |
| ' f@local# A, ' c-f@local# A, |
[IFDEF] (.") ' (.") A, ' c-c" A, [THEN] |
| ' laddr# A, ' c-laddr# A, |
[IFDEF] "lit ' "lit A, ' c-c" A, [THEN] |
| ' lp+!# A, ' c-lp+!# A, |
[IFDEF] (c") ' (c") A, ' c-c" A, [THEN] |
| ' (s") A, ' c-s" A, |
|
| ' (.") A, ' c-." A, |
|
| ' "lit A, ' c-c" A, |
|
| ' leave A, ' c-leave A, |
|
| ' ?leave A, ' c-?leave A, |
|
| ' (do) A, ' c-do A, |
' (do) A, ' c-do A, |
| |
[IFDEF] (+do) ' (+do) A, ' c-do A, [THEN] |
| |
[IFDEF] (u+do) ' (u+do) A, ' c-do A, [THEN] |
| |
[IFDEF] (-do) ' (-do) A, ' c-do A, [THEN] |
| |
[IFDEF] (u-do) ' (u-do) A, ' c-do A, [THEN] |
| ' (?do) A, ' c-?do A, |
' (?do) A, ' c-?do A, |
| ' (for) A, ' c-for A, |
' (for) A, ' c-for A, |
| ' ?branch A, ' c-?branch A, |
' ?branch A, ' c-?branch A, |
| ' branch A, ' c-branch A, |
' branch A, ' c-branch A, |
| ' (loop) A, ' c-loop A, |
' (loop) A, ' c-loop A, |
| ' (+loop) A, ' c-+loop A, |
' (+loop) A, ' c-loop A, |
| ' (s+loop) A, ' c-s+loop A, |
[IFDEF] (s+loop) ' (s+loop) A, ' c-loop A, [THEN] |
| ' (-loop) A, ' c--loop A, |
[IFDEF] (-loop) ' (-loop) A, ' c-loop A, [THEN] |
| ' (next) A, ' c-next A, |
' (next) A, ' c-loop A, |
| ' ?branch-lp+!# A, ' c-?branch-lp+!# A, |
|
| ' branch-lp+!# A, ' c-branch-lp+!# A, |
|
| ' (loop)-lp+!# A, ' c-loop-lp+!# A, |
|
| ' (+loop)-lp+!# A, ' c-+loop-lp+!# A, |
|
| ' (s+loop)-lp+!# A, ' c-s+loop-lp+!# A, |
|
| ' (-loop)-lp+!# A, ' c--loop-lp+!# A, |
|
| ' (next)-lp+!# A, ' c-next-lp+!# A, |
|
| ' ;s A, ' c-exit A, |
' ;s A, ' c-exit A, |
| ' (does>) A, ' c-does> A, |
[IFDEF] (abort") ' (abort") A, ' c-abort" A, [THEN] |
| ' (abort") A, ' c-abort" A, |
\ only defined if compiler is loaded |
| ' (compile) A, ' c-(compile) A, |
[IFDEF] (compile) ' (compile) A, ' c-(compile) A, [THEN] |
| 0 , |
[IFDEF] (does>) ' (does>) A, ' c-does> A, [THEN] |
| |
0 , here 0 , |
| |
|
| |
avariable c-extender |
| |
c-extender ! |
| |
|
| \ DOTABLE 15may93jaw |
\ DOTABLE 15may93jaw |
| |
|
| : DoTable ( cfa -- flag ) |
: DoTable ( cfa -- flag ) |
| C-Table |
C-Table |
| BEGIN dup @ dup |
BEGIN dup @ dup 0= |
| WHILE 2 pick <> |
IF drop cell+ @ dup |
| |
IF ( next table!) dup @ ELSE |
| |
( end!) 2drop false EXIT THEN |
| |
THEN |
| |
\ jump over to extender, if any 26jan97jaw |
| |
xt>threaded 2 pick <> |
| WHILE 2 cells + |
WHILE 2 cells + |
| REPEAT |
REPEAT |
| nip cell+ @ EXECUTE |
nip cell+ perform |
| true |
true |
| ELSE |
; |
| 2drop drop false |
|
| THEN ; |
|
| |
|
| : BranchTo? ( a-addr -- a-addr ) |
: BranchTo? ( a-addr -- a-addr ) |
| Display? IF dup BranchAddr? |
Display? IF dup BranchAddr? |
| IF BEGIN cell+ @ dup 20 u> |
IF |
| |
BEGIN cell+ @ dup 20 u> |
| IF drop nl S" BEGIN " .struc level+ |
IF drop nl S" BEGIN " .struc level+ |
| ELSE |
ELSE |
| dup Disable <> |
dup Disable <> over LeaveCode <> and |
| IF WhileCode2 = |
IF WhileCode2 = |
| IF nl S" THEN " .struc nl ELSE |
IF nl S" THEN " .struc nl ELSE |
| level- nl S" THEN " .struc nl THEN |
level- nl S" THEN " .struc nl THEN |
| dup cell+ swap @ |
dup cell+ swap @ |
| dup >r DoTable r> swap IF drop EXIT THEN |
dup >r DoTable r> swap IF drop EXIT THEN |
| Display? |
Display? |
| IF look 0= IF drop dup 1 cells - @ . \ ABORT" SEE: Bua!" |
IF |
| ELSE dup cell+ count 31 and rot wordinfo .string THEN bl cemit |
.word bl cemit |
| ELSE drop |
ELSE |
| |
drop |
| THEN ; |
THEN ; |
| |
|
| : c-init |
: c-init |
| c-stop @ |
c-stop @ |
| UNTIL drop ; |
UNTIL drop ; |
| |
|
| DEFER dosee |
Defer xt-see-xt ( xt -- ) |
| |
\ this one is just a forward declaration for indirect recursion |
| |
|
| : dopri .name ." is primitive" cr ; |
: .defname ( xt c-addr u -- ) |
| : dovar ." Variable " .name cr ; |
rot look |
| : douse ." User " .name cr ; |
if ( c-addr u nfa ) |
| : docon dup cell+ (name>) >body @ . ." Constant " .name cr ; |
-rot type space .name |
| : doval dup cell+ (name>) >body @ . ." Value " .name cr ; |
else |
| : dodef ." Defer " dup >r .name cr |
drop ." noname " type |
| r@ cell+ (name>) >body @ look |
then |
| 0= ABORT" SEE: No valid xt in deferred word" |
space ; |
| dup dosee cr |
|
| ." ' " .name r> ." IS " .name cr ; |
Defer discode ( addr u -- ) \ gforth |
| : dodoe ." Create " dup .name cr |
\G hook for the disassembler: disassemble code at addr of length u |
| S" DOES> " Com# .string XPos @ Level ! name> |
' dump IS discode |
| >does-code dup C-Pass @ DebugMode = IF ScanMode c-pass ! EXIT THEN |
|
| ScanMode c-pass ! dup makepass |
: next-head ( addr1 -- addr2 ) \ gforth |
| DisplayMode c-pass ! makepass ; |
\G find the next header starting after addr1, up to here (unreliable). |
| : doali here @ .name ." Alias " .name cr |
here swap u+do |
| here @ dosee ; |
i head? |
| : docol S" : " Com# .string |
if |
| dup cell+ count $1F and 2 pick wordinfo .string bl cemit bl cemit |
i unloop exit |
| ( XPos @ ) 2 Level ! |
then |
| name> >body |
cell +loop |
| C-Pass @ DebugMode = IF ScanMode c-pass ! EXIT THEN |
here ; |
| |
|
| |
: umin ( u1 u2 -- u ) |
| |
2dup u> |
| |
if |
| |
swap |
| |
then |
| |
drop ; |
| |
|
| |
: next-prim ( addr1 -- addr2 ) \ gforth |
| |
\G find the next primitive after addr1 (unreliable) |
| |
1+ >r -1 primstart |
| |
begin ( umin head R: boundary ) |
| |
@ dup |
| |
while |
| |
tuck name>int >code-address ( head1 umin ca R: boundary ) |
| |
r@ - umin |
| |
swap |
| |
repeat |
| |
drop dup r@ negate u>= |
| |
\ "umin+boundary within [0,boundary)" = "umin within [-boundary,0)" |
| |
if ( umin R: boundary ) \ no primitive found behind -> use a default length |
| |
drop 31 |
| |
then |
| |
r> + ; |
| |
|
| |
: seecode ( xt -- ) |
| |
dup s" Code" .defname |
| |
>code-address |
| |
dup in-dictionary? \ user-defined code word? |
| |
if |
| |
dup next-head |
| |
else |
| |
dup next-prim |
| |
then |
| |
over - discode |
| |
." end-code" cr ; |
| |
: seevar ( xt -- ) |
| |
s" Variable" .defname cr ; |
| |
: seeuser ( xt -- ) |
| |
s" User" .defname cr ; |
| |
: seecon ( xt -- ) |
| |
dup >body ? |
| |
s" Constant" .defname cr ; |
| |
: seevalue ( xt -- ) |
| |
dup >body ? |
| |
s" Value" .defname cr ; |
| |
: seedefer ( xt -- ) |
| |
dup >body @ xt-see-xt cr |
| |
dup s" Defer" .defname cr |
| |
>name ?dup-if |
| |
." IS " .name cr |
| |
else |
| |
." lastxt >body !" |
| |
then ; |
| |
: see-threaded ( addr -- ) |
| |
C-Pass @ DebugMode = IF |
| |
ScanMode c-pass ! |
| |
EXIT |
| |
THEN |
| ScanMode c-pass ! dup makepass |
ScanMode c-pass ! dup makepass |
| DisplayMode c-pass ! makepass ; |
DisplayMode c-pass ! makepass ; |
| |
: seedoes ( xt -- ) |
| |
dup s" create" .defname cr |
| |
S" DOES> " Com# .string XPos @ Level ! |
| |
>does-code see-threaded ; |
| |
: seecol ( xt -- ) |
| |
dup s" :" .defname nl |
| |
2 Level ! |
| |
>body see-threaded ; |
| |
: seefield ( xt -- ) |
| |
dup >body ." 0 " ? ." 0 0 " |
| |
s" Field" .defname cr ; |
| |
|
| create wordtypes |
: xt-see ( xt -- ) \ gforth |
| Pri# , ' dopri A, |
\G Decompile the definition represented by @i{xt}. |
| Var# , ' dovar A, |
|
| Con# , ' docon A, |
|
| Val# , ' doval A, |
|
| Def# , ' dodef A, |
|
| Doe# , ' dodoe A, |
|
| Ali# , ' doali A, |
|
| Col# , ' docol A, |
|
| Use# , ' douse A, |
|
| 0 , |
|
| |
|
| : (dosee) ( lfa -- ) |
|
| dup dup cell+ c@ >r |
|
| wordinfo |
|
| wordtypes |
|
| BEGIN dup @ dup |
|
| WHILE 2 pick = IF cell+ @ nip EXECUTE |
|
| r> dup 32 and IF ." immediate" THEN |
|
| 64 and IF ." restrict" THEN EXIT THEN |
|
| 2 cells + |
|
| REPEAT |
|
| 2drop rdrop |
|
| .name ." Don't know how to handle" cr ; |
|
| |
|
| ' (dosee) IS dosee |
|
| |
|
| : xtc ( xt -- ) \ do see at xt |
|
| Look 0= ABORT" SEE: No valid XT" |
|
| cr c-init |
cr c-init |
| dosee ; |
dup >does-code |
| |
if |
| : see name sfind 0= IF ." Word unknown" cr exit THEN |
seedoes EXIT |
| xtc ; |
then |
| |
dup xtprim? |
| : lfc cr c-init cell+ dosee ; |
if |
| : nfc cr c-init dosee ; |
seecode EXIT |
| |
then |
| |
dup >code-address |
| |
CASE |
| |
docon: of seecon endof |
| |
docol: of seecol endof |
| |
dovar: of seevar endof |
| |
[ [IFDEF] douser: ] |
| |
douser: of seeuser endof |
| |
[ [THEN] ] |
| |
[ [IFDEF] dodefer: ] |
| |
dodefer: of seedefer endof |
| |
[ [THEN] ] |
| |
[ [IFDEF] dofield: ] |
| |
dofield: of seefield endof |
| |
[ [THEN] ] |
| |
over of seecode endof \ direct threaded code words |
| |
over >body of seecode endof \ indirect threaded code words |
| |
2drop abort" unknown word type" |
| |
ENDCASE ; |
| |
|
| |
: (xt-see-xt) ( xt -- ) |
| |
xt-see cr ." lastxt" ; |
| |
' (xt-see-xt) is xt-see-xt |
| |
|
| |
: (.immediate) ( xt -- ) |
| |
['] execute = if |
| |
." immediate" |
| |
then ; |
| |
|
| |
: name-see ( nfa -- ) |
| |
dup name>int >r |
| |
dup name>comp |
| |
over r@ = |
| |
if \ normal or immediate word |
| |
swap xt-see (.immediate) |
| |
else |
| |
r@ ['] ticking-compile-only-error = |
| |
if \ compile-only word |
| |
swap xt-see (.immediate) ." compile-only" |
| |
else \ interpret/compile word |
| |
r@ xt-see-xt cr |
| |
swap xt-see-xt cr |
| |
." interpret/compile " over .name (.immediate) |
| |
then |
| |
then |
| |
rdrop drop ; |
| |
|
| |
: see ( "<spaces>name" -- ) \ tools |
| |
\G Locate @var{name} using the current search order. Display the |
| |
\G definition of @var{name}. Since this is achieved by decompiling |
| |
\G the definition, the formatting is mechanised and some source |
| |
\G information (comments, interpreted sequences within definitions |
| |
\G etc.) is lost. |
| |
name find-name dup 0= |
| |
IF |
| |
drop -&13 throw |
| |
THEN |
| |
name-see ; |
| |
|
| |
|