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2021-11-12test/syntax.rb: test argument forwarding without parentheses.Yukihiro "Matz" Matsumoto
2021-10-12Support Ruby3.0 keyword arguments.Yukihiro "Matz" Matsumoto
The Difference Since Ruby1.9, the keyword arguments were emulated by Ruby using the hash object at the bottom of the arguments. But we have gradually moved toward keyword arguments separated from normal (positinal) arguments. At the same time, we value compatibility, so that Ruby3.0 keyword arguments are somewhat compromise. Basically, keyword arguments are separated from positional arguments, except when the method does not take any formal keyword arguments, given keyword arguments (packed in the hash object) are considered as the last argument. And we also allow non symbol keys in the keyword arguments. In that case, those keys are just passed in the `**` hash (or raise `ArgumentError` for unknown keys). The Instruction Changes We have changed `OP_SEND` instruction. `OP_SEND` instruction used to take 3 operands, the register, the symbol, the number of (positional) arguments. The meaning of the third operand has been changed. It is now considered as `n|(nk<<4)`, where `n` is the number of positional arguments, and `nk` is the number of keyword arguments, both occupies 4 bits in the operand. The number `15` in both `n` and `nk` means variable sized arguments are packed in the object. Positional arguments will be packed in the array, and keyword arguments will be packed in the hash object. That means arguments more than 14 values are always packed in the object. Arguments information for other instructions (`OP_SENDB` and `OP_SUPER`) are also changed. It works as the third operand of `OP_SEND`. the difference between `OP_SEND` and `OP_SENDB` is just trivial. It assigns `nil` to the block hidden arguments (right after arguments). The instruction `OP_SENDV` and `OP_SENDVB` are removed. Those instructions are replaced by `OP_SEND` and `OP_SENDB` respectively with the `15` (variable sized) argument information. Calling Convention When calling a method, the stack elements shall be in the order of the receiver of the method, positional arguments, keyword arguments and the block argument. If the number of positional or keyword arugument (`n` or `nk`) is zero, corresponding arguments will be empty. So when `n=0` and `nk=0` the stack layout (from bottom to top) will be: +-----------------------+ | recv | block (or nil) | +-----------------------+ The last elements `block` should be explicitly filled before `OP_SEND` or assigned to `nil` by `OP_SENDB` internally. In other words, the following have exactly same behavior: OP_SENDB clears `block` implicitly: ``` OP_SENDB reg sym 0 ``` OP_SEND clears `block` implicitly: ``` OP_LOADNIL R2 OP_SEND R2 sym 0 ``` When calling a method with only positional arguments (n=0..14) without keyword arguments, the stack layout will be like following: +--------------------------------------------+ | recv | arg1 | ... | arg_n | block (or nil) | +--------------------------------------------+ When calling a method with arguments packed in the array (n=15) which means argument splat (*) is used in the actual arguments, or more than 14 arguments are passed the stack layout will be like following: +-------------------------------+ | recv | array | block (or nil) | +-------------------------------+ The number of the actual arguments is determined by the length of the argument array. When keyword arguments are given (nk>0), keyword arguments are passed between positional arguments and the block argument. For example, when we pass one positional argument `1` and one keyword argument `a: 2`, the stack layout will be like: +------------------------------------+ | recv | 1 | :a | 2 | block (or nil) | +------------------------------------+ Note that keyword arguments consume `2*nk` elements in the stack when `nk=0..14` (unpacked). When calling a method with keyword arguments packed in the hash object (nk=15) which means keyword argument splat (**) is used or more than 14 keyword arguments in the actual arguments, the stack layout will be like: +------------------------------+ | recv | hash | block (or nil) | +------------------------------+ Note for mruby/c When mruby/c authors try to support new keyword arguments, they need to handle the new meaning of the argument information operand. If they choose not to support keyword arguments in mruby/c, it just raise error when `nk` (taken by `(c>>4)&0xf`) is not zero. And combine `OP_SENDV` behavior with `OP_SEND` when `n` is `15`. If they want to support keyword arguments seriously, contact me at <[email protected]> or `@yukihiro_matz`. I can help you.
2021-07-15test/syntax.rb: add tests for `break` and `redo`.Yukihiro "Matz" Matsumoto
2021-07-15Merge pull request #4141 from udzura/add-test-for-attr-nil-guardYukihiro "Matz" Matsumoto
Add a testcase of #4137 fix
2021-05-21test/syntax.rb: fix endless def warning (no assertion).Yukihiro "Matz" Matsumoto
2021-05-18parse.y: allow "command" syntax in endless method definition.Yukihiro "Matz" Matsumoto
This change allows `def hello = puts "Hello"` without parentheses. This syntax has been introduced since Ruby3.1.
2021-03-31codegen.c: `yield` outside of method is now `SyntaxError`.Yukihiro "Matz" Matsumoto
2020-12-09Argument forwarding with `...` now supports leading arguments.Yukihiro "Matz" Matsumoto
```ruby def method_missing(meth, ...) send(:"do_#{meth}", ...) end ```
2020-11-02Replace `R-assignment` by `single-line pattern matching`.Yukihiro "Matz" Matsumoto
Since `R-assignment` in CRuby is abandoned. Single-line pattern matching in `mruby` only matches single local variable at the moment. Currently it works as a right assignment to a local variable. It will be enhanced in the future.
2020-10-12Rightward-assign by ASSOC.Yukihiro "Matz" Matsumoto
[ruby-bugs:15921]
2019-12-21Numbered parameters should not be available in the lambda bodies.Yukihiro "Matz" Matsumoto
`mruby` does not warn like `CRuby` for cases like #4893. Fix #4890, fix #4891, fix #4893.
2019-12-21`_0` is not numbered parameterKOBAYASHI Shuji
#### Before this patch: ```console $ bin/mruby rb -e '_0=:l; p ->{_0}.()' -e:1:13: _0 is not available -e:1:13: syntax error, unexpected $end, expecting '}' ``` #### After this patch (same as Ruby): ```console $ bin/mruby rb -e '_0=:l; p ->{_0}.()' :l ```
2019-12-09Support new numbered parameter syntax `_1` instead of `@1`.Yukihiro "Matz" Matsumoto
2019-12-09Implement numbered parametersUkrainskiy Sergey
2019-10-03Add tests for #4746KOBAYASHI Shuji
2019-06-09Fix missing assertions in `test/t/syntax.rb`KOBAYASHI Shuji
2018-11-05Fixed a bug in argument number check with kwargs; fix #4159Yukihiro "Matz" Matsumoto
2018-10-15Add a testcase of #4137 fixUchio KONDO
2018-09-07Clear terminated spacedearblue
2018-07-31Add test case corresponding to 53e2723.Yukihiro "Matz" Matsumoto
2018-07-30Keyword argument implemented.Yukihiro "Matz" Matsumoto
2017-04-13Update NODE_XSTR, NODE_DSXTR tests; ref #3605Yukihiro "Matz" Matsumoto
2016-12-01Add test for recently fixed bugsYutaka HARA
2016-09-08Add testing for regressionksss
2016-07-14Should raise LocalJumpError when no block givenksss
2015-11-17mruby-1.2.01.2.0mimaki
2015-09-02Make travis happyZachary Scott
We have do this because mruby's test files are found using MRUBY_ROOT, like this: mrbs = Dir.glob("#{MRUBY_ROOT}/test/t/*.rb")
2015-05-31fix masgn nosplat array rhs bugcremno
The rest lhs variable has to be an empty array if rhs is an array with less elements than pre + post lhs variables. The codegen generated OP_ARRAY with an invalid length (such as 127 for *a, b = []) because rn was negative.
2015-05-31update test/t/syntax.rb to success on CRubyYukihiro "Matz" Matsumoto
2015-05-29add multiple assignment with rest testscremno
2015-05-07fix splat without assignment; fix #2781cremno
The parser generates NODE_NIL for tSTAR without argument in masgns. The codegen didn't handle that.
2015-02-24Fix a bug that no expression case doesn't return valid valueKouhei Sutou
Here is a script that reproduces this problem: x = case when true; 1 end p x # => main # 1 is expected
2015-02-24Fix a bug that if and no return value case can't return true clause valueKouhei Sutou
Here is a script that reproduce this problem: x = if true 1 else case 2 when 3 end 4 end p x # => nil # 1 is expected
2014-12-23Fix splat and multiple assignmentsKouhei Sutou
Case1: From variable Code: a = [1, 2, 3, 4, 5] b, c, *d = a p [a, b, c, d] Before: [[1, 2, 3, 4, 5], 1, 2, []] After: [[1, 2, 3, 4, 5], 1, 2, [3, 4, 5]] Ruby: [[1, 2, 3, 4, 5], 1, 2, [3, 4, 5]] Case2: From variables Code: a = [1, 2, 3] b = [4, 5, 6, 7] c, d, *e, f, g = *a, *b p [a, b, c, d, e, f, g] Before: [[1, 2, 3], [4, 5, 6, 7], 1, 2, [], 6, 7] After: [[1, 2, 3], [4, 5, 6, 7], 1, 2, [3, 4, 5], 6, 7] Ruby: [[1, 2, 3], [4, 5, 6, 7], 1, 2, [3, 4, 5], 6, 7] Case 3: "for" Code: a = [1, 2, 3, 4, 5, 6, 7] for b, c, *d, e, f in [a] do p [a, b, c, d, e, f] end Before: [[1, 2, 3, 4, 5, 6, 7], 1, 2, [], nil, nil] After: [[1, 2, 3, 4, 5, 6, 7], 1, 2, [3, 4, 5], 6, 7] Ruby: [[1, 2, 3, 4, 5, 6, 7], 1, 2, [3, 4, 5], 6, 7]
2014-11-27add multiple assignment decomposition testYukihiro "Matz" Matsumoto
2014-05-03count skipped line numbersNobuyoshi Nakada
2014-05-03skip to the next line and reset column after `=end`Nobuyoshi Nakada
2014-05-03fix embedded documentsNobuyoshi Nakada
tabs are allowed after `=begin` and `=end`. raise `SyntaxError` if no =end is found.
2014-04-28Add tests for multiline comment parsingCarson McDonald
2014-04-21tests should not depend on `mruby-proc-ext`cremno
2014-04-21fix optional block arguments in rhsNobuyoshi Nakada
define optional block arguments as argument variables in the rhs default expressions, as same as mere assignment expressions. Import ruby/ruby@01740f0c273c89f7bcff3d5014d73c8ff6fb1986
2014-04-21fix optional arguments in rhsNobuyoshi Nakada
define optional arguments as argument variables in the rhs default expressions, as same as mere assignment expressions. Import ruby/ruby@01740f0c273c89f7bcff3d5014d73c8ff6fb1986
2014-04-21allow method definition in cmdargNobuyoshi Nakada
save cmdarg_stack and isolate command argument state from outer scope to allow method definition in cmdarg import from ruby/ruby@04bb9d6b75a55d4000700769eead5a5cb942c25b
2014-04-19Allow parenthesed do-block in cmdargNobuyoshi Nakada
Flush cmdarg flags inside left-paren in a command argument, to allow parenthesed `do-block` as an argument without arguments parentheses. `CMDARG_PUSH(0)` for tLPAREN_ARG is before `CMDARG_PUSH(1)` in `command_args` due to look-ahead.
2014-03-28Add test for backquote.take_cheeze
* Implement code generation of NODE_DXSTR. * Fix NOVAL NODE_XSTR.
2014-03-05__FILE__ test: add support for \ as separatorcremno
2014-02-26add test for __LINE__ and __FILE__take_cheeze
2014-01-06tests for "case" expression.Tomoyuki Sahara
2014-01-04Test case statement with splatCarson McDonald
2013-12-20add some tests for case statementsh2so5
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