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authorDimitri Sokolyuk <demon@dim13.org>2017-08-19 12:15:28 +0200
committerDimitri Sokolyuk <demon@dim13.org>2017-08-19 12:15:28 +0200
commit67d25d837ac55f28a366c0a3b262e439a6e75fc3 (patch)
treedf7715c7724c5935ab87c807f3b8b4ef529315e3 /amforth-6.5/avr8/lib/forth2012/core/environment-q.frt
parente0d6784e89dba33226c0edb815bb974486fa7c48 (diff)
Add AmForth
Diffstat (limited to 'amforth-6.5/avr8/lib/forth2012/core/environment-q.frt')
-rw-r--r--amforth-6.5/avr8/lib/forth2012/core/environment-q.frt53
1 files changed, 53 insertions, 0 deletions
diff --git a/amforth-6.5/avr8/lib/forth2012/core/environment-q.frt b/amforth-6.5/avr8/lib/forth2012/core/environment-q.frt
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+++ b/amforth-6.5/avr8/lib/forth2012/core/environment-q.frt
@@ -0,0 +1,53 @@
+\ environment queries are placed in a
+\ separate wordlist.
+
+\ #require imove.frt
+
+\ we have to distinguish between interpreted (RAM)
+\ and compiled (Flash) strings. First the RAM
+\ strings
+
+: (environment?) \ addr len -- 0|x*i -1
+ environment search-wordlist dup
+ if >r execute r> then
+;
+
+
+\ the compiled (Flash) strings are transferred
+\ to RAM and this copy processed afterwards.
+: [environment?]
+ ( iaddr len -- )
+ dup >r
+ here imove
+ here r> (environment?)
+;
+
+\ a state smart word to decide what to do.
+: environment?
+ state @ if
+ postpone [environment?]
+ else
+ (environment?)
+ then
+; immediate
+
+\ some environment queries
+
+\ save the definitions word list for this file
+\ and switch to the environment queries wordlist
+get-current environment set-current
+
+: /counted-strings &60 ;
+: floored 0 ;
+: address-unit-bits $10 ;
+: max-char $ff ;
+: max-d $7fffffff. ;
+: max-ud $ffffffff. ;
+: max-n $7fff ;
+: max-u $ffff ;
+
+: return-stack-cells &10 ;
+: stack-cells &10 ;
+
+\ reset the definition word list
+set-current