Usage

Lua Module

Use YueScript module in Lua:

• Case 1

  Require “your_yuescript_entry.yue” in Lua.

  require("yue")("your_yuescript_entry")

  And this code still works when you compile “your_yuescript_entry.yue” to “your_yuescript_entry.lua” in the same path. In the rest YueScript files just use the normal require or import. The code line numbers in error messages will also be handled correctly.

• Case 2

  Require YueScript module and rewite message by hand.

  local yue = require("yue")
  yue.insert_loader()
  local success, result = xpcall(function()
    return require("yuescript_module_name")
  end, function(err)
    return yue.traceback(err)
  end)

• Case 3

  Use the YueScript compiler function in Lua.

  local yue = require("yue")
  local codes, err, globals = yue.to_lua([[
    f = ->
      print "hello world"
    f!
  ]],{
    implicit_return_root = true,
    reserve_line_number = true,
    lint_global = true,
    space_over_tab = false,
    options = {
      target = "5.4",
      path = "/script"
    }
  })

YueScript Tool

Use YueScript tool with:

> yue -h
Usage: yue
       [options] [<file/directory>] ...
       yue -e <code_or_file> [args...]
       yue -w [<directory>] [options]
       yue -

Notes:
   - '-' / '--' must be the first and only argument.
   - '-o/--output' can not be used with multiple input files.
   - '-w/--watch' can not be used with file input (directory only).
   - with '-e/--execute', remaining tokens are treated as script args.

Options:
   -h, --help                 Show this help message and exit.
   -e <str>, --execute <str>  Execute a file or raw codes
   -m, --minify               Generate minified codes
   -r, --rewrite              Rewrite output to match original line numbers
   -t <output_to>, --output-to <output_to>
                              Specify where to place compiled files
   -o <file>, --output <file> Write output to file
   -p, --print                Write output to standard out
   -b, --benchmark            Dump compile time (doesn't write output)
   -g, --globals              Dump global variables used in NAME LINE COLUMN
   -s, --spaces               Use spaces in generated codes instead of tabs
   -l, --line-numbers         Write line numbers from source codes
   -j, --no-implicit-return   Disable implicit return at end of file
   -c, --reserve-comments     Reserve comments before statement from source codes
   -w [<dir>], --watch [<dir>]
                              Watch changes and compile every file under directory
   -v, --version              Print version
   -                          Read from standard in, print to standard out
                              (Must be first and only argument)
   --                         Same as '-' (kept for backward compatibility)

   --target <version>         Specify the Lua version that codes will be generated to
                              (version can only be 5.1 to 5.5)
   --path <path_str>          Append an extra Lua search path string to package.path
   --<key>=<value>            Pass compiler option in key=value form (existing behavior)

   Execute without options to enter REPL, type symbol '$'
   in a single line to start/stop multi-line mode

Use cases:

Recursively compile every YueScript file with extension .yue under current path: yue .

Compile and save results to a target path: yue -t /target/path/ .

Compile and reserve debug info: yue -l .

Compile and generate minified codes: yue -m .

Execute raw codes: yue -e ‘print 123’

Execute a YueScript file: yue -e main.yue