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30 commits

Author SHA1 Message Date
Luna
26d299cd23 add local/global "switch" 2019-06-03 16:10:49 -03:00
Luna
5138410be4 compiler: add scope support 2019-06-03 15:17:07 -03:00
Luna
25ee586acb compiler: add local scope basics 2019-06-03 15:10:12 -03:00
Luna
69dda36d16 add SetGlobal/SetGlobalLong opcodes 
- main: split compile/runtime error messages
 2019-06-03 01:41:22 -03:00
Luna
8bc220d2f8 chunk: split writing side-effects into own function 
split writeConstant() into that and writeConstantRaw() for the places
where we don't want OP_CONSTANT written as well.

this caused a bug where doing `"some const string" + x` would cause an
unecessary OP_CONSTANT to be added for the x variable and would cause
the wrong result to be given.

 - main: reset stack on repl tick (?)
 2019-06-03 00:55:50 -03:00
Luna
005981fbbd vm: add getglobal support 2019-06-02 23:57:28 -03:00
Luna
887cb1adea add emitting of GetGlobal/GetGlobalLong 2019-06-02 23:43:12 -03:00
Luna
3a6df2d9ea add basic global variable support 
- chunk: make writeConstant return a ConstantIndex for better
    integration with the (optional) OP_CONST_LONG
 - compiler: quickfix emitConstant()
 - vm: add a global ValueMap
 2019-06-02 22:52:19 -03:00
Luna
aa94396e51 compiler: add nicer error handling 
- vm: fix pop opcode handler
 2019-06-02 18:11:23 -03:00
Luna
06df2d37ee add expression statements 2019-06-02 18:04:36 -03:00
Luna
bea6e34365 add print statement 
- remove opcode return's use as debug
 2019-06-02 17:28:54 -03:00
Luna
cf53b6fc86 add basics of virtual machine object list 
- object: move functions to accept VM pointer, not Allocator
 2019-06-02 14:52:19 -03:00
Luna
38715af200 vm: add string concatenation 
- compiler: fix string creation
 2019-06-02 14:18:01 -03:00
Luna
9ac5fccc2b add objects and string comparison 2019-06-02 14:01:54 -03:00
Luna
44c27f43b7 move new_scanner.zig to scanner.zig 2019-06-02 13:17:32 -03:00
Luna
71dba5c77d vm: add greater and less 2019-06-02 00:23:50 -03:00
Luna
15c58a2216 comparison operators, part 1 2019-06-02 00:16:33 -03:00
Luna
c5d704a34f add not operator 2019-06-02 00:02:37 -03:00
Luna
1d774c6011 add support for nil, true and false literal values 2019-06-01 23:44:59 -03:00
Luna
589413488c move towards dynamically typed values 
- remove InterpretResult as an enum, replace by error.
 - scanner: fix peekNext()
 - vm: add runtime errors, add VM.peek()
 2019-06-01 23:33:53 -03:00
Luna
0f8e19adf1 compiler: finish parser (for math expressions) 2019-06-01 21:32:25 -03:00
Luna
230fef20b5 add other bytecode emitters 2019-06-01 20:48:26 -03:00
Luna
e1d0e3ec0b add basic compiler code 2019-06-01 20:33:43 -03:00
Luna
7d7aabbdd7 scanner: add keyword handling (copied off the old scanner) 
as with most things, lol
 2019-06-01 17:20:50 -03:00
Luna
27b04e1612 scanner: add basic error handling, strings, comments 2019-06-01 17:07:22 -03:00
Luna
2c7cf356b3 scanner: add basic tokens and matched-tokens 2019-06-01 16:51:02 -03:00
Luna
6b9cc575d9 add draft scanner, remove messy Token union, replace by struct 2019-06-01 16:37:24 -03:00
Luna
63045e4df5 add src/new_scanner.zig 2019-06-01 16:21:36 -03:00
Luna
a9dca436bd remove chunk running code, add draft compiler struct 2019-06-01 16:12:39 -03:00
Luna
c4401dc8cf moving to the virtual machine part of the book, pt 1 
the java part would still fuck me up since it lies on OOP stuff
that zig doesnt provide, so i'm skipping towards the C part of the book
which will hopefully be more understandable from a zig perspective.
 2019-06-01 01:20:06 -03:00