Node v18 "fetch" causes exception on LSP startup

Motorola 68000 family language server

Language Server Protocol implementation for Motorola 68000 family assembly, based on tree-sitter-m68k

Suitable for use with LSP supporting editors e.g. Neovim
Includes VS Code extension

Features

Auto-completion:
- Instruction mnemonics
- Assembler directives
- Registers
- Symbols
Code Linting
- Parser errors
- Processor support
Code Folding
Document Formatting
Document Highlights
Document Links
Document Symbols
Find References
Go to definition
Hover
- Instruction/directive documentation
- Symbol info
Multiple workspaces
Rename Symbols
Signature Help

Installation

Install the package via npm:

npm install --global m68k-lsp-server

Usage

Neovim

Configure using nvim-lspconfig

e.g.

require('lspconfig').m68k.setup{
  on_attach = on_attach,
  init_options = {
    includePaths = { '../include', '/home/myuser/includes' },
    format = {
      case = {
        instruction = 'upper'
      }
    }
  }
}

Emacs

See emacs-m68k

Standalone server

Start the server e.g.:

m68k-lsp-server --stdio

Configuration

The LSP client can configured using the following settings, either as initialization options, or as a .m68krc.json file in your workspace root, for project specific overrides.

Processors:

Lists the processor(s) that your code is targeted at. This controls completion suggestions and provides diagnostics.

{
  "processors": ["mc68030", "mc68881"]
}

Default: ["mc68000"]

Supported values: mc68000 ,mc68010 ,mc68020 ,mc68030 ,mc68040 ,mc68060 ,mc68881 ,mc68851 ,cpu32

Include Paths:

Additional paths to use to resolve include directives. This is equivalent to INCDIR in source. It should probably include anything you pass to vasm -I arguments. Can be absolute or relative.

{
  "includePaths": ["../include", "/home/myuser/includes"]
}

Default: []

vasm diagnostics:

The server can use vasm to provide diagnostic messages. When enabled it will assemble source files on save/open and display any errors or warnings.

The server will use a local vasmm68k_mot executable if one exists in your path or is configured in vasm.binPath, otherwise it will default to a bundled version complied in Web Assembly.

{
  "vasm": {
    "provideDiagnostics": true,
    "binPath": "vasmm68k_mot",
    "args": [],
    "preferWasm": false,
    "exclude": []
  }
}

(defaults)

Property	Description
`provideDiagnostics`	Enable vasm diagnostics
`binPath`	Filename or full path of vasm executable binary
`args`	Custom arguments to pass to vasm. Include paths and processor(s) from server config will automatically be added
`preferWasm`	Always use bundled Web Assembly vasm
`exclude`	File patterns to ignore and not build directly e.g. `["*.i"]`

Formatting:

The language server supports document formatting which can be configured using the following options:

Case

Enforce consistency of upper/lower case on elements which are normally case insensitive.

Option	Behaviour
`upper`	Upper case
`lower`	Lower case
`any`	Do not change case

This can either be configured globally for all elements:

{
  "format": {
    "case": "lower"
  }
}

or per element type

{
  "format": {
    "case": {
      "instruction": "lower",
      "directive": "lower",
      "control": "upper",
      "sectionType": "lower",
      "register": "lower",
      "hex": "lower"
    }
  }
}

Element	Description
`instruction`	Instruction mnemonic/size e.g. `move.w`
`directive`	Assembler directive mnemonic/qualifier e.g. `include`
`control`	Assembler control keywords e.g. `ifeq`/`endc`
`sectionType`	Section type e.g. `bss`
`register`	Register name e.g. `d0`,`sr`
`hex`	Hexadecimal number literal

Default: "lower"

Label colon

Determines whether labels should have a colon suffix.

Can be set for all labels:

{
  "format": {
    "labelColon": "on"
  }
}

or individually for global and local labels:

{
  "format": {
    "labelColon": {
      "global": "on",
      "local": "off"
    }
  }
}

Option	Behaviour
`on`	Add colon
`off`	Remove colon
`notInline`	No colon for labels on same line as instruction
`onlyInline`	Only add colon for labels on same line as instruction
`any`	Do not change

Default: "on"

Operand space

Include space between operands e.g. move d0, d1. VASM needs -spaces or -phxass option to support this.

Option	Behaviour
`on`	Add space
`off`	Remove space
`any`	Do not change

Default: "off"

{
  "format": {
    "operandSpace": "off"
  }
}

Quotes

Quote style to use for strings and paths.

{
  "format": {
    "quotes": "single"
  }
}

Option	Behaviour
`single`	Single quotes: `'`
`double`	Double quotes: `"`
`any`	Do not change

Default: "double"

Align

Indents elements to align by type.

{
  "format": {
    "align": {
      "mnemonic": 8,
      "operands": 16,
      "comment": 48,
      "operator": 0,
      "value": 0,
      "indentStyle": "space",
      "tabSize": 8,
      "autoExtend": "line"
    }
  }
}

(defaults)

Property	Description
`mnemonic`	Position of instruction/directive mnemonic and size e.g. `move.w`,`include`.
`operands`	Position of operands e.g. `d0,d1`.
`comment`	Position of comment following statement. Comments on their own line are not affected.
`operator`	Position of `=` character in constant assignment
`value`	Position of value in constant assignment
`standaloneComment`	Position / behaviour of comment with no other elements on the same line.
`indentStyle`	Character to use for indent - `tab` or `space`.
`tabSize`	Width of tab character to calculate positions when using `tab` indent style.
`autoExtend`	Behaviour when a component exceeds the available space between positions. See below.

Options for standaloneComment:

Option	Behaviour
`"nearest"`	Align to nearest element position (default). E.g. if current position is closest to mnemonic it snaps to that column
`"ignore"`	Don't align
`elementName`	Align to named element position e.g. `"label"`, `"mnemonic"`, `"operands"`
`number`	Numeric literal position

Options for autoExtend:

Option	Behaviour
`line`	Adjust the position for the affected line only
`block`	Adjust the position, maintaining alignment for all lines within the same block i.e. code separated by two or more line breaks
`file`	Adjust the position, maintaining alignment for all lines in the source file

Trim whitespace

Remove trailing whitespace from lines?

{
  "format": {
    "trimWhitespace": true
  }
}

default: true

Final new line

Require line break on final line?

{
  "format": {
    "finalNewLine": true
  }
}

End-of-line character

New line type: lf, cr, crlf

{
  "format": {
    "endOfLine": "lf"
  }
}

default: lf

TODO

Full documentation for 68010+ instructions
Diagnostics
- Instruction signatures
Amiga or other platform specific docs?

License

This project is made available under the MIT License.

	async onDidChangeConfiguration() {
	const newConfig = await this.ctx.connection.workspace.getConfiguration(
	"m68k"
	);
	this.ctx.config = mergeDefaults(newConfig);
	}

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