1 \ This program is free software: you can redistribute it and/or modify
2 \ it under the terms of the GNU General Public License as published by
3 \ the Free Software Foundation, either version 3 of the License, or
4 \ (at your option) any later version.
6 \ This program is distributed in the hope that it will be useful,
7 \ but WITHOUT ANY WARRANTY; without even the implied warranty of
8 \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 \ GNU General Public License for more details.
11 \ You should have received a copy of the GNU General Public License
12 \ along with this program. If not, see <http://www.gnu.org/licenses/>.
14 \ word EXECUTE 12 define
15 16500 execute WORD 16500 29 execute
16 word DEFINE 29 29 execute
19 word MODE 14336 define
20 word EXECUTE-WORD 16680 define
21 word EXECUTE-NUM 16720 define
22 word INTERPRET 16400 define
24 word WORD-START 20 define
25 word WORD-PUT 19 define
26 word WORD-END 23 define
27 word STRING-START 39 define
28 word STRING-PUT 40 define
29 word STRING-END 41 define
32 word FIND-DOES 44 define
33 word DEFINE-DOES 45 define
34 word QUIT 16384 define
37 word CHANNEL-IN 35 define
38 word CHANNEL-OUT 48 define
39 word CHANNEL-OPEN 51 define
40 word CHANNEL-AWAIT 50 define
44 word STACKTRACE 46 define
71 \ ' "TICK" returns address of word's execution semantics
73 word word find , word find find , word ; find ,
75 \ : "COLON" sets execution semantics
77 word : here define-does
78 ' word , ' here , ' define , ' ; ,
80 \ :> "DOES" sets compilation semantics
81 word :> here define-does
82 : :> ' word , ' here , ' define-does , ' ; ,
84 \ ::> "COLON DOES" sets execution and compilation semantics
85 word ::> here define-does
87 ' word , ' 2dup , ' here , ' define-does , ' here , ' define , ' ; ,
89 \ write the execution semantics of a word to memory
90 : MEMORIZE-WORD ' dup , ' JNZ: , here 12 + , ' 2drop , ' ; ,
91 ' 2dup , ' find , ' dup , ' JZ: , here 16 + , ' , , ' 2drop , ' ; ,
92 ' drop , ' lit , ' lit , ' , , ' execute-num , ' , , ' ; ,
94 \ change interpreter semantics to "memorize-word"
95 : memorizing ' lit , ' mode , ' lit , ' memorize-word , ' ! , ' ; ,
97 \ memorize the compiler
99 \: executing lit mode lit execute-word ! ;
100 \: FINISH-" drop string-end ;
101 \: BSLASH-" drop key string-put JMP: \here \8 \+ \,
102 \: " string-start \: KLOOP key 92 =? JNZ: bslash-" 34 =? JNZ: finish-" string-put JMP: KLOOP
103 \: DO" \:> " " swap lit lit , , lit lit , , ;
104 \: DOIF \:> IF lit JZ: , here dup , ;
105 \: DOELSE \:> ELSE lit JMP: , here dup , swap here ! ;
106 \: DOTHEN \:> THEN here ! ;
108 \doif 2dup find-does dup
109 \doif rot 2drop execute ;
110 \dothen drop 2dup find dup
112 \dothen drop lit lit , execute-num , ;
113 \dothen 2drop \do" Compilation Error: null word" .s bye
114 \: compiling lit mode lit compile-word ! ;
116 \ compile the rest of the compiler
119 \ ; "RET" compilation semantics: ends a function and returns to executing mode
120 :> ; lit \' ; \, , lit \' ; \, , executing \' ; \,
122 \ ;; "SEMIRET" compilation semantics: simply writes a return instruction
123 :> ;; lit \' ; \, , ;
125 \ <: "OVERLOAD COLON" extend previous execution semantics of word
126 ::> <: \compiling word 2dup find dup if here swap , define else drop here define
129 \ <:> "OVERLOAD COLON DOES" extend previous compilation semantics of word
130 ::> <:> \compiling word 2dup find-does dup if here swap , define-does else drop
131 here define-does then compiling ;
133 \ execution semantics of COLON, DOES, and COLON DOES now extended to
134 \ automatically switch to compilation mode
139 \ Multi-line comments
140 ::> ( key 41 =? swap -1 =? swap drop + if ;; then JMP: \' ( \, ;
142 \ Set the number conversion base
143 : BASE 14348 swap ! ;
147 End of bootstrap process
148 beyond this point, all hope is lost
152 " watForth-32 Interactive CLI: