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* 6153 - switch 'main' to use Mu stringsKartik Agaram2020-03-151-7/+7
| | | | | | | | | | | At the SubX level we have to put up with null-terminated kernel strings for commandline args. But so far we haven't done much with them. Rather than try to support them we'll just convert them transparently to standard length-prefixed strings. In the process I realized that it's not quite right to treat the combination of argc and argv as an array of kernel strings. Argc counts the number of elements, whereas the length of an array is usually denominated in bytes.
* 6144Kartik Agaram2020-03-141-4/+10
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* 6143Kartik Agaram2020-03-141-0/+2
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* 6130Kartik Agaram2020-03-111-4/+3
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* 6076Kartik Agaram2020-03-021-20/+21
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* 6041 - array indexing starting to workKartik Agaram2020-02-211-5/+9
| | | | | | | | | | | | | And we're using it now in factorial.mu! In the process I had to fix a couple of bugs in pointer dereferencing. There are still some limitations: a) Indexing by a literal doesn't work yet. b) Only arrays of ints supported so far. Looking ahead, I'm not sure how I can support indexing arrays by non-literals (variables in registers) unless the element size is a power of 2.
* 6026Kartik Agaram2020-02-181-7/+7
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* 6024 - finally, commandline parsing in MuKartik Agaram2020-02-181-4/+22
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* 6010 - starting to flesh out run-testsKartik Agaram2020-02-161-1/+1
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* 6009 - significantly cleaner lexingKartik Agaram2020-02-161-3/+2
| | | | | | | | | This cleans up a bunch of little warts that had historically accumulated because of my bull-headedness in not designing a grammar up front. Let's see if the lack of a grammar comes up again. We now require that there be no space in variable declarations between the name and the colon separating it from its type.
* 6008Kartik Agaram2020-02-161-2/+3
| | | | | | | | Allow comments at the end of all kinds of statements. To do this I replaced all calls to next-word with next-mu-token.. except one. I'm not seeing any bugs yet, any places where comments break things. But this exception makes me nervous.
* 6006Kartik Agaram2020-02-141-2/+2
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* 6005Kartik Agaram2020-02-141-0/+7
| | | | | | | | Support calling SubX code from Mu. I have _zero_ idea how to make this safe. Now we can start writing tests. We can't use commandline args yet. That requires support for kernel strings.
* 5954 - 'factorial' working!Kartik Agaram2020-01-291-0/+19