vim: README_VIM9.md annotate

annotate README_VIM9.md @ 20359:fad124c0e349 v8.2.0735

patch 8.2.0735: Vim9: using unitialized memory Commit: https://github.com/vim/vim/commit/bc38f25c021dc4314c77d50a608329a328b0d988 Author: Bram Moolenaar <Bram@vim.org> Date: Sun May 10 23:20:06 2020 +0200 patch 8.2.0735: Vim9: using unitialized memory Problem: Vim9: using unitialized memory. Solution: Clear the arg_lvar field.

author	Bram Moolenaar <Bram@vim.org>
date	Sun, 10 May 2020 23:30:03 +0200
parents	94eda51ba9ba
children	1b345fb68ae3

rev	line source
19181 94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	1 ![Vim Logo](https://github.com/vim/vim/blob/master/runtime/vimlogo.gif)
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	2
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	3 # What is Vim9?
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	4
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	5 This is an experimental side of [Vim](https://github.com/vim/vim).
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	6 It explores ways of making Vim script faster and better.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	7
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	8 WARNING: The Vim9 script features are in the early stages of development,
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	9 anything can break!
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	10
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	11 # Why Vim9?
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	12
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	13 ## 1. FASTER VIM SCRIPT
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	14
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	15 The third item on the poll results of 2018, after popup windows and text
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	16 properties, is faster Vim script. So how do we do that?
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	17
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	18 I have been throwing some ideas around, and soon came to the conclusion
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	19 that the current way functions are called and executed, with
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	20 dictionaries for the arguments and local variables, is never going to be
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	21 very fast. We're lucky if we can make it twice as fast. The overhead
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	22 of a function call and executing every line is just too high.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	23
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	24 So what then? We can only make something fast by having a new way of
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	25 defining a function, with similar but different properties of the old
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	26 way:
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	27 * Arguments are only available by name, not through the a: dictionary or
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	28 the a:000 list.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	29 * Local variables are not available in an l: dictionary.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	30 * A few more things that slow us down, such as exception handling details.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	31
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	32 I Implemented a "proof of concept" and measured the time to run a simple
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	33 for loop with an addition (Justin used this example in his presentation,
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	34 full code is below):
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	35
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	36 ``` vim
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	37 let sum = 0
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	38 for i in range(1, 2999999)
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	39 let sum += i
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	40 endfor
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	41 ```
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	42
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	43 \| how \| time in sec \|
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	44 \| --------\| -------- \|
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	45 \| Vim old \| 5.018541 \|
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	46 \| Python \| 0.369598 \|
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	47 \| Lua \| 0.078817 \|
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	48 \| Vim new \| 0.073595 \|
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	49
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	50 That looks very promising! It's just one example, but it shows how much
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	51 we can gain, and also that Vim script can be faster than builtin
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	52 interfaces.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	53
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	54 In practice the script would not do something useless as counting but change
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	55 the text. For example, re-indent all the lines:
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	56
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	57 ``` vim
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	58 let totallen = 0
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	59 for i in range(1, 100000)
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	60 call setline(i, ' ' .. getline(i))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	61 let totallen += len(getline(i))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	62 endfor
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	63 ```
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	64
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	65 \| how \| time in sec \|
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	66 \| --------\| -------- \|
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	67 \| Vim old \| 0.853752 \|
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	68 \| Python \| 0.304584 \|
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	69 \| Lua \| 0.286573 \|
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	70 \| Vim new \| 0.190276 \|
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	71
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	72 The differences are smaller, but Vim 9 script is clearly the fastest.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	73
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	74 How does Vim9 script work? The function is first compiled into a sequence of
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	75 instructions. Each instruction has one or two parameters and a stack is
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	76 used to store intermediate results. Local variables are also on the
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	77 stack, space is reserved during compilation. This is a fairly normal
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	78 way of compilation into an intermediate format, specialized for Vim,
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	79 e.g. each stack item is a typeval_T. And one of the instructions is
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	80 "execute Ex command", for commands that are not compiled.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	81
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	82
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	83 ## 2. PHASING OUT INTERFACES
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	84
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	85 Attempts have been made to implement functionality with built-in script
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	86 languages such as Python, Perl, Lua, Tcl and Ruby. This never gained much
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	87 foothold, for various reasons.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	88
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	89 Instead of using script language support in Vim:
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	90 * Encourage implementing external tools in any language and communicate
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	91 with them. The job and channel support already makes this possible.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	92 Really any language can be used, also Java and Go, which are not
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	93 available built-in.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	94 * Phase out the built-in language interfaces, make maintenance a bit easier
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	95 and executables easier to build. They will be kept for backwards
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	96 compatibility, no new features.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	97 * Improve the Vim script language, it is used to communicate with the external
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	98 tool and implements the Vim side of the interface. Also, it can be used when
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	99 an external tool is undesired.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	100
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	101 All together this creates a clear situation: Vim with the +eval feature
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	102 will be sufficient for most plugins, while some plugins require
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	103 installing a tool that can be written in any language. No confusion
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	104 about having Vim but the plugin not working because some specific
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	105 language is missing. This is a good long term goal.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	106
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	107 Rationale: Why is it better to run a tool separately from Vim than using a
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	108 built-in interface and interpreter? Take for example something that is
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	109 written in Python:
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	110 * The built-in interface uses the embedded python interpreter. This is less
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	111 well maintained than the python command. Building Vim with it requires
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	112 installing developer packages. If loaded dynamically there can be a version
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	113 mismatch.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	114 * When running the tool externally the standard python command can be used,
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	115 which is quite often available by default or can be easily installed.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	116 * The built-in interface has an API that is unique for Vim with Python. This is
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	117 an extra API to learn.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	118 * A .py file can be compiled into a .pyc file and execute much faster.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	119 * Inside Vim multi-threading can cause problems, since the Vim core is single
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	120 threaded. In an external tool there are no such problems.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	121 * The Vim part is written in .vim files, the Python part is in .py files, this
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	122 is nicely separated.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	123 * Disadvantage: An interface needs to be made between Vim and Python.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	124 JSON is available for this, and it's fairly easy to use. But it still
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	125 requires implementing asynchronous communication.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	126
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	127
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	128 ## 3. BETTER VIM SCRIPT
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	129
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	130 To make Vim faster a new way of defining a function needs to be added.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	131 While we are doing that, since the lines in this function won't be fully
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	132 backwards compatible anyway, we can also make Vim script easier to use.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	133 In other words: "less weird". Making it work more like modern
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	134 programming languages will help. No surprises.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	135
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	136 A good example is how in a function the arguments are prefixed with
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	137 "a:". No other language I know does that, so let's drop it.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	138
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	139 Taking this one step further is also dropping "s:" for script-local variables;
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	140 everything at the script level is script-local by default. Since this is not
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	141 backwards compatible it requires a new script style: Vim9 script!
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	142
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	143 It should be possible to convert code from other languages to Vim
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	144 script. We can add functionality to make this easier. This still needs
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	145 to be discussed, but we can consider adding type checking and a simple
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	146 form of classes. If you look at JavaScript for example, it has gone
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	147 through these stages over time, adding real class support and now
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	148 TypeScript adds type checking. But we'll have to see how much of that
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	149 we actually want to include in Vim script. Ideally a conversion tool
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	150 can take Python, JavaScript or TypeScript code and convert it to Vim
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	151 script, with only some things that cannot be converted.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	152
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	153 Vim script won't work the same as any specific language, but we can use
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	154 mechanisms that are commonly known, ideally with the same syntax. One
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	155 thing I have been thinking of is assignments without ":let". I often
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	156 make that mistake (after writing JavaScript especially). I think it is
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	157 possible, if we make local variables shadow commands. That should be OK,
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	158 if you shadow a command you want to use, just rename the variable.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	159 Using "let" and "const" to declare a variable, like in JavaScript and
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	160 TypeScript, can work:
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	161
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	162
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	163 ``` vim
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	164 def MyFunction(arg: number): number
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	165 let local = 1
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	166 let todo = arg
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	167 const ADD = 88
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	168 while todo > 0
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	169 local += ADD
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	170 --todo
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	171 endwhile
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	172 return local
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	173 enddef
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	174 ```
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	175
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	176 The similarity with JavaScript/TypeScript can also be used for dependencies
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	177 between files. Vim currently uses the `:source` command, which has several
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	178 disadvantages:
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	179 * In the sourced script, is not clear what it provides. By default all
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	180 functions are global and can be used elsewhere.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	181 * In a script that sources other scripts, it is not clear what function comes
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	182 from what sourced script. Finding the implementation is a hassle.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	183 * Prevention of loading the whole script twice must be manually implemented.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	184
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	185 We can use the `:import` and `:export` commands from the JavaScript standard to
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	186 make this much better. For example, in script "myfunction.vim" define a
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	187 function and export it:
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	188
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	189 ``` vim
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	190 vim9script " Vim9 script syntax used here
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	191
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	192 let local = 'local variable is not exported, script-local'
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	193
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	194 export def MyFunction() " exported function
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	195 ...
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	196
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	197 def LocalFunction() " not exported, script-local
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	198 ...
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	199 ```
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	200
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	201 And in another script import the function:
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	202
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	203 ``` vim
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	204 vim9script " Vim9 script syntax used here
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	205
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	206 import MyFunction from 'myfunction.vim'
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	207 ```
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	208
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	209 This looks like JavaScript/TypeScript, thus many users will understand the
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	210 syntax.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	211
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	212 These are ideas, this will take time to design, discuss and implement.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	213 Eventually this will lead to Vim 9!
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	214
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	215
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	216 ## Code for sum time measurements
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	217
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	218 Vim was build with -O2.
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	219
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	220 ``` vim
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	221 func VimOld()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	222 let sum = 0
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	223 for i in range(1, 2999999)
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	224 let sum += i
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	225 endfor
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	226 return sum
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	227 endfunc
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	228
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	229 func Python()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	230 py3 << END
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	231 sum = 0
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	232 for i in range(1, 3000000):
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	233 sum += i
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	234 END
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	235 return py3eval('sum')
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	236 endfunc
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	237
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	238 func Lua()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	239 lua << END
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	240 sum = 0
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	241 for i = 1, 2999999 do
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	242 sum = sum + i
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	243 end
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	244 END
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	245 return luaeval('sum')
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	246 endfunc
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	247
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	248 def VimNew()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	249 let sum = 0
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	250 for i in range(1, 2999999)
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	251 let sum += i
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	252 endfor
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	253 return sum
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	254 enddef
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	255
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	256 let start = reltime()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	257 echo VimOld()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	258 echo 'Vim old: ' .. reltimestr(reltime(start))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	259
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	260 let start = reltime()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	261 echo Python()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	262 echo 'Python: ' .. reltimestr(reltime(start))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	263
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	264 let start = reltime()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	265 echo Lua()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	266 echo 'Lua: ' .. reltimestr(reltime(start))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	267
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	268 let start = reltime()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	269 echo VimNew()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	270 echo 'Vim new: ' .. reltimestr(reltime(start))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	271 ```
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	272
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	273 ## Code for indent time measurements
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	274
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	275 ``` vim
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	276 def VimNew(): number
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	277 let totallen = 0
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	278 for i in range(1, 100000)
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	279 setline(i, ' ' .. getline(i))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	280 totallen += len(getline(i))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	281 endfor
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	282 return totallen
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	283 enddef
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	284
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	285 func VimOld()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	286 let totallen = 0
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	287 for i in range(1, 100000)
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	288 call setline(i, ' ' .. getline(i))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	289 let totallen += len(getline(i))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	290 endfor
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	291 return totallen
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	292 endfunc
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	293
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	294 func Lua()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	295 lua << END
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	296 b = vim.buffer()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	297 totallen = 0
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	298 for i = 1, 100000 do
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	299 b[i] = " " .. b[i]
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	300 totallen = totallen + string.len(b[i])
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	301 end
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	302 END
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	303 return luaeval('totallen')
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	304 endfunc
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	305
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	306 func Python()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	307 py3 << END
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	308 cb = vim.current.buffer
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	309 totallen = 0
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	310 for i in range(0, 100000):
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	311 cb[i] = ' ' + cb[i]
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	312 totallen += len(cb[i])
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	313 END
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	314 return py3eval('totallen')
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	315 endfunc
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	316
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	317 new
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	318 call setline(1, range(100000))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	319 let start = reltime()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	320 echo VimOld()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	321 echo 'Vim old: ' .. reltimestr(reltime(start))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	322 bwipe!
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	323
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	324 new
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	325 call setline(1, range(100000))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	326 let start = reltime()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	327 echo Python()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	328 echo 'Python: ' .. reltimestr(reltime(start))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	329 bwipe!
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	330
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	331 new
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	332 call setline(1, range(100000))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	333 let start = reltime()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	334 echo Lua()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	335 echo 'Lua: ' .. reltimestr(reltime(start))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	336 bwipe!
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	337
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	338 new
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	339 call setline(1, range(100000))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	340 let start = reltime()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	341 echo VimNew()
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	342 echo 'Vim new: ' .. reltimestr(reltime(start))
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	343 bwipe!
94eda51ba9ba patch 8.2.0149: maintaining a Vim9 branch separately is more work Bram Moolenaar <Bram@vim.org> parents: diff changeset	344 ```

Mercurial > vim

annotate README_VIM9.md @ 20359:fad124c0e349 v8.2.0735