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* 3987Kartik K. Agaram2017-09-011-1/+1
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* 3966Kartik K. Agaram2017-07-091-1/+1
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* 3742 - move instruction.old_name to a later layerKartik K. Agaram2017-02-061-1/+2
| | | | | | The drawback of this is that we forget to initialize old_name when we create instructions out of whole cloth in a few places. But this problem already existed..
* 3707Kartik K. Agaram2016-12-121-2/+1
| | | | | | | | | | | | | | | | | | Be more disciplined about tagging 2 different concepts in the codebase: a) Use the phrase "later layers" to highlight places where a layer doesn't have the simplest possible self-contained implementation. b) Use the word "hook" to point out functions that exist purely to provide waypoints for extension by future layers. Since both these only make sense in the pre-tangled representation of the codebase, using '//:' and '#:' comments to get them stripped out of tangled output. (Though '#:' comments still make it to tangled output at the moment. Let's see if we use it enough to be worth supporting. Scenarios are pretty unreadable in tangled output anyway.)
* 3701Kartik K. Agaram2016-11-291-1/+1
| | | | Gracefully handle yet another typo.
* 3678 - complain about string labelsKartik K. Agaram2016-11-151-1/+1
| | | | Thanks Jack Couch for running into this.
* 3568Kartik K. Agaram2016-10-231-1/+1
| | | | Fix syntax highlighting for labels after commit 3552.
* 3561Kartik K. Agaram2016-10-221-2/+2
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* 3552Kartik K. Agaram2016-10-221-1/+1
| | | | | | | | | | | | | | | | | | Stop requiring jump instructions to explicitly provide a ':label' type for jump targets. This has been a source of repeated confusion for my students: a) They'd add the ':label' to the label definition rather than the jump target (label use) b) They'd spend time thinking about whether the initial '+' prefix was part of the label name. In the process I cleaned up a couple of things: - the space of names is more cleanly partitioned into labels and non-labels (clarifying that '_' and '-' are non-label prefixes) - you can't use label names as regular variables anymore - you can infer the type of a label just from its name
* 3549Kartik K. Agaram2016-10-221-1/+6
| | | | | | | | | | | | | | | | | | More consistent definitions for jump targets and waypoints. 1. A label is a word starting with something other than a letter or digit or '$'. 2. A waypoint is a label that starts with '<' and ends with '>'. It has no restrictions. A recipe can define any number of waypoints, and recipes can have duplicate waypoints. 3. The special labels '{' and '}' can also be duplicated any number of times in a recipe. The only constraint on them is that they have to balance in any recipe. Every '{' must be followed by a matching '}'. 4. All other labels are 'jump targets'. You can't have duplicate jump targets in a recipe; that would make jumps ambiguous.
* 3539Kartik K. Agaram2016-10-211-3/+18
| | | | | | | | | | | | | Always check if next_word() returned an empty string (if it hit eof). Thanks Rebecca Allard for running into a crash when a .mu file ends with '{' (without a following newline). Open question: how to express the constraint that next_word() should always check if its result is empty? Can *any* type system do that?! Even the usual constraint that we must use a result isn't iron-clad: you could save the result in a variable but then ignore it. Unless you go to Go's extraordinary lengths of considering any dead code an error.
* 3522Kartik K. Agaram2016-10-191-4/+4
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* 3441Kartik K. Agaram2016-10-041-7/+7
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* 3440Kartik K. Agaram2016-10-041-24/+24
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* 3439Kartik K. Agaram2016-10-041-1/+16
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* 3435Kartik K. Agaram2016-10-041-0/+3
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* 3364Kartik K. Agaram2016-09-151-0/+8
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* 3273Kartik K. Agaram2016-08-281-2/+2
| | | | | | | | | | | Undo 3272. The trouble with creating a new section for constants is that there's no good place to order it since constants can be initialized using globals as well as vice versa. And I don't want to add constraints disallowing either side. Instead, a new plan: always declare constants in the Globals section using 'extern const' rather than just 'const', since otherwise constants implicitly have internal linkage (http://stackoverflow.com/questions/14894698/why-does-extern-const-int-n-not-work-as-expected)
* 3272Kartik K. Agaram2016-08-281-1/+1
| | | | | | Move global constants into their own section since we seem to be having trouble linking in 'extern const' variables when manually cleaving mu.cc into separate compilation units.
* 3259Kartik K. Agaram2016-08-261-1/+1
| | | | | | | | | | | Prefer preincrement operators wherever possible. Old versions of compilers used to be better at optimizing them. Even if we don't care about performance it's useful to make unary operators look like unary operators wherever possible, and to distinguish the 'statement form' which doesn't care about the value of the expression from the postincrement which usually increments as a side-effect in some larger computation (and so is worth avoiding except for some common idioms, or perhaps even there).
* 3168 - skip loading recipe 'main' in edit/Kartik K. Agaram2016-08-121-2/+6
| | | | | | | This is part of efforts to allow students to transition gradually from the sandbox to running programs directly on the commandline, writing real scenarios, etc. Running on the commandline requires 'main', but overriding 'main' would mess up edit/ which is itself a Mu program.
* 3120Kartik K. Agaram2016-07-211-4/+2
| | | | | | | | Always show instruction before any transforms in error messages. This is likely going to make some errors unclear because they *need* to show the original instruction. But if we don't have tests for those situations did they ever really work?
* 3101 - purge .traces/ dir from repo historyKartik K. Agaram2016-07-051-1/+0
| | | | | | | | | | | | | | | | | | | | | I'd been toying with this idea for some time now given how large the repo had been growing. The final straw was noticing that people cloning the repo were having to wait *5 minutes*! That's not good, particularly for a project with 'tiny' in its description. After purging .traces/ clone time drops to 7 seconds in my tests. Major issue: some commits refer to .traces/ but don't really change anything there. That could get confusing :/ Minor issues: a) I've linked inside commits on GitHub like a half-dozen times online or over email. Those links are now liable to eventually break. (I seem to recall GitHub keeps them around as long as they get used at least once every 60 days, or something like that.) b) Numbering of commits is messed up because some commits only had changes to the .traces/ sub-directory.
* 2990Kartik K. Agaram2016-05-201-1/+1
| | | | | | | | | | Standardize quotes around reagents in error messages. I'm still sure there's issues. For example, the messages when type-checking 'copy'. I'm not putting quotes around them because in layer 60 I end up creating dilated reagents, and then it's a bit much to have quotes and (two kinds of) brackets. But I'm sure I'm doing that somewhere..
* 2803Kartik K. Agaram2016-03-211-28/+28
| | | | | Show more thorough information about instructions in the trace, but keep the original form in error messages.
* 2799 - new approach to undoing changes in testsKartik K. Agaram2016-03-201-20/+0
| | | | | | | | As outlined at the end of 2797. This worked out surprisingly well. Now the snapshotting code touches fewer layers, and it's much better behaved, with less need for special-case logic, particularly inside run_interactive(). 30% slower, but should hopefully not cause any more bugs.
* 2773 - switch to 'int'Kartik K. Agaram2016-03-131-3/+3
| | | | This should eradicate the issue of 2771.
* 2735 - define recipes using 'def'Kartik K. Agaram2016-03-081-20/+21
| | | | | | | | | | | | I'm dropping all mention of 'recipe' terminology from the Readme. That way I hope to avoid further bike-shedding discussions while I very slowly decide on the right terminology with my students. I could be smarter in my error messages and use 'recipe' when code uses it and 'function' otherwise. But what about other words like ingredient? It would all add complexity that I'm not yet sure is worthwhile. But I do want separate experiences for veteran programmers reading about Mu on github and for people learning programming using Mu.
* 2712Kartik K. Agaram2016-02-261-9/+9
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* 2709Kartik K. Agaram2016-02-251-1/+0
| | | | | Only Hide_errors when strictly necessary. In other places let test failures directly show the unexpected error.
* 2704 - eradicate all mention of warnings from coreKartik K. Agaram2016-02-251-9/+9
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* 2702Kartik K. Agaram2016-02-251-12/+12
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* 2681 - drop reagent types from reagent propertiesKartik K. Agaram2016-02-211-42/+35
| | | | | | | | | | | | | | | | | All my attempts at staging this change failed with this humongous commit that took all day and involved debugging three monstrous bugs. Two of the bugs had to do with forgetting to check the type name in the implementation of shape-shifting recipes. Bug #2 in particular would cause core tests in layer 59 to fail -- only when I loaded up edit/! It got me to just hack directly on mu.cc until I figured out the cause (snapshot saved in mu.cc.modified). The problem turned out to be that I accidentally saved a type ingredient in the Type table during specialization. Now I know that that can be very bad. I've checked the traces for any stray type numbers (rather than names). I also found what might be a bug from last November (labeled TODO), but we'll verify after this commit.
* 2689 - consistently use s-exp syntax in tracesKartik K. Agaram2016-02-191-4/+4
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* 2686Kartik K. Agaram2016-02-191-1/+1
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* 2685Kartik K. Agaram2016-02-191-4/+4
| | | | | | | | | | | | | | | | Stack of plans for cleaning up replace_type_ingredients() and a couple of other things, from main problem to subproblems: include type names in the type_tree rather than in the separate properties vector make type_tree and string_tree real cons cells, with separate leaf nodes redo the vocabulary for dumping various objects: do we really need to_string and debug_string? can we have a version with *all* information? can we have to_string not call debug_string? This commit nibbles at the edges of the final task, switching from member method syntax to global function like almost everything else. I'm mostly using methods just for STL in this project.
* 2648Kartik K. Agaram2016-02-111-0/+1
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* 2643Kartik K. Agaram2016-02-101-2/+2
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* 2617 - better error messagesKartik K. Agaram2016-01-301-1/+3
| | | | | | | | | | | | | | | | | | When we stash a value, mu does several levels of work for us: a) First it inserts instructions above the stash to convert the value to text using to-text-line. b) to-text-line calls to-text. Both are shape-shifting, so multiple levels of specialization happen. To give a good error message, we track the 'stack' of current specializations at the time of the error, and also check if the offending instruction at the top-most level looks like it was inserted while rewriting stash instructions. Manual example (since booleans can't be stashed at the moment): x:boolean <- copy 1/true stash x
* 2603 - bugfix: defining main with commandline argsKartik K. Agaram2016-01-251-1/+1
| | | | Pretty hacky fix: we simply suppress static dispatch for main.
* 2553 - keep failed specializations from generating spurious errorsKartik K. Agaram2015-12-281-2/+0
| | | | Thanks Caleb Couch.
* three bugs fixedKartik K. Agaram2015-12-151-8/+13
| | | | | | | | | | | | | | | | | - notes bug in edit/ triggers in immutable but not master branch bug triggered by changes to layer 059: we're finding an unspecialized call to 'length' in 'append_6' hard to debug because trace isn't complete just bring out the big hammer: use a new log file length_2 from recipes.mu is not being deleted (bug #1) so reload doesn't switch length to length_2 when variant_already_exists (bug #2) so we end up saving in Recipe for a primitive ordinal so no valid specialization is found for 'length' (bug #3) why doesn't it trigger in a non-interactive scenario? argh, wasn't checking for an empty line at end. ok, confidence restored.
* 2622Kartik K. Agaram2015-12-131-9/+9
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* 2615Kartik K. Agaram2015-12-021-4/+16
| | | | | | We don't actually need skip_whitespace_AND_comments_BUT_NOT_newline anywhere except next_word(). Perhaps what I should really do is split the definition of next_word() into two variants..
* 2614 - still fixing bugs with missing '['Kartik K. Agaram2015-12-021-27/+9
| | | | | | When skipping past some text (usually whitespace, but also commas and comments) I need to always be aware of whether it's ok to switch to the next line or not.
* 2454Kartik K. Agaram2015-11-171-13/+13
| | | | | | Another gotcha uncovered in the process of sorting out the previous commit: I keep using eof() but forgetting that there are two other states an istream can get into. Just never use eof().
* 2407 - bugfix: parsing recipe headersKartik K. Agaram2015-11-091-1/+3
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* 2384 - tests pass until layer 54Kartik K. Agaram2015-11-071-1/+2
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* 2379 - further improvements to map operationsKartik K. Agaram2015-11-061-1/+1
| | | | | | | Commands run: $ sed -i 's/\([^. (]*\)\.find(\([^)]*\)) != [^.]*\.end()/contains_key(\1, \2)/g' 0[^0]*cc $ sed -i 's/\([^. (]*\)\.find(\([^)]*\)) == [^.]*\.end()/!contains_key(\1, \2)/g' 0[^0]*cc
* 2378Kartik K. Agaram2015-11-061-1/+1
| | | | | | Now we're starting to run up against the misbehavior introduced by generics: Type tries to insert rows for type ingredients. That is a no-no.