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* reading from streamsKartik K. Agaram2021-07-031-4/+3
| | | | | | The Mu shell has no string literals, only streams. No random access, only sequential access. But I've been playing fast and loose with its read pointer until now. Hopefully things are cleaned up now.
* clean up final abort in macroexpandKartik K. Agaram2021-06-301-1/+8
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* snapshot: infixKartik K. Agaram2021-06-221-2/+2
| | | | | | | | | | | | | | | | | | | | | Like parenthesize, I'm copying tests over from https://github.com/akkartik/wart Unlike parenthesize, though, I can't just transliterate the code itself. Wart was operating on an intermediate AST representation. Here I'm all the way down to cells. That seemed like a good idea when I embarked, but now I'm not so sure. Operating with the right AST data structure allowed me to more easily iterate over the elements of a list. The natural recursion for cells is not a good fit. This patch and the next couple is an interesting case study in what makes Unix so effective. Yes, you have to play computer, and yes it gets verbose and ugly. But just diff and patch go surprisingly far in helping build a picture of the state space in my brain. Then again, there's a steep gradient of skills here. There are people who can visualize state spaces using diff and patch far better than me, and people who can't do it as well as me. Nature, nurture, having different priorities, whatever the reason. Giving some people just the right crutch excludes others.
* change precision when loading sandbox codeSumeet Agarwal2021-06-171-2/+2
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* more robust print-cellKartik K. Agaram2021-05-191-18/+160
| | | | | It is used to print to the trace, and we shouldn't crash the whole computer just because the trace ran out of space.
* disallow null tracesKartik K. Agaram2021-05-191-16/+58
| | | | | | We now use traces everywhere for error-checking. Null traces introduce the possibility of changing a functions error response, and therefore its semantics.
* shell: add a lot of error-checkingKartik K. Agaram2021-05-181-1/+7
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* belatedly migrate stale example definitionsKartik K. Agaram2021-05-061-1/+1
| | | | | Also bare-bones syntax highlighting for .limg files. Doesn't work when .limg file is first file opened with Vim.
* shell: unquote spliceKartik K. Agaram2021-05-041-1/+1
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* reading and printing backquotes and unquotesKartik K. Agaram2021-05-031-1/+29
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* printing quoted expressionsKartik K. Agaram2021-05-021-0/+14
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* .Kartik K. Agaram2021-05-021-5/+5
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* move color scheme closer to Solarized darkKartik K. Agaram2021-05-011-2/+2
| | | | | | | | | | | | | sed -i 's,0x12/bg=almost-black,0xdc/bg=green-bg,g' shell/*.mu sed -i 's, 0/bg, 0xc5/bg=blue-bg,g' shell/*.mu sed -i 's, 7/fg=trace, 0x38/fg=trace,g' shell/*.mu sed -i 's, 7/bg=grey, 0x5c/bg=black,g' shell/*.mu Still a few issues. Thanks Adrian Cochrane and Zach DeCook. https://floss.social/@alcinnz/106152068473019933 https://social.librem.one/@zachdecook/106159988837603417
* .Kartik K. Agaram2021-04-221-2/+9
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* .Kartik K. Agaram2021-04-181-0/+7
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* shell: ctrl-r runs on real screen without a traceKartik K. Agaram2021-04-171-2/+14
| | | | | We run out of memory fairly early in the course of drawing a chessboard on the whole screen.
* .Kartik K. Agaram2021-04-171-1/+1
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* shell: streams that you can append graphemes toKartik K. Agaram2021-04-101-0/+26
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* shell: fake screensKartik K. Agaram2021-04-101-0/+12
| | | | | | | I just realized Mu has a pretty big weakness: writes to null pointers don't error out. Perhaps writes to address 0 do, but address 1 and so on don't? I need a slightly more sophisticated page table.
* shell: start rendering globalsKartik K. Agaram2021-04-081-0/+7
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* shell: now we can start adding primitivesKartik K. Agaram2021-04-061-0/+7
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* 7866Kartik Agaram2021-03-071-5/+5
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* 7865Kartik Agaram2021-03-071-1/+1
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* 7863 - shell: anonymous fn callsKartik K. Agaram2021-03-071-10/+21
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* 7857 - shell: first function callKartik K. Agaram2021-03-051-0/+10
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* 7842 - new directory organizationKartik K. Agaram2021-03-031-0/+260
Baremetal is now the default build target and therefore has its sources at the top-level. Baremetal programs build using the phase-2 Mu toolchain that requires a Linux kernel. This phase-2 codebase which used to be at the top-level is now under the linux/ directory. Finally, the phase-2 toolchain, while self-hosting, has a way to bootstrap from a C implementation, which is now stored in linux/bootstrap. The bootstrap C implementation uses some literate programming tools that are now in linux/bootstrap/tools. So the whole thing has gotten inverted. Each directory should build one artifact and include the main sources (along with standard library). Tools used for building it are relegated to sub-directories, even though those tools are often useful in their own right, and have had lots of interesting programs written using them. A couple of things have gotten dropped in this process: - I had old ways to run on just a Linux kernel, or with a Soso kernel. No more. - I had some old tooling for running a single test at the cursor. I haven't used that lately. Maybe I'll bring it back one day. The reorg isn't done yet. Still to do: - redo documentation everywhere. All the README files, all other markdown, particularly vocabulary.md. - clean up how-to-run comments at the start of programs everywhere - rethink what to do with the html/ directory. Do we even want to keep supporting it? In spite of these shortcomings, all the scripts at the top-level, linux/ and linux/bootstrap are working. The names of the scripts also feel reasonable. This is a good milestone to take stock at.