yue

Description:

  The Yuescript language library.

version

Type: Field.

Description:

  The Yuescript version.

Signature:

version: string

dirsep

Type: Field.

Description:

  The file separator for the current platform.

Signature:

dirsep: string

yue_compiled

Type: Field.

Description:

  The compiled module code cache.

Signature:

yue_compiled: {string: string}

to_lua

Type: Function.

Description:

  The Yuescript compiling function. It compiles the Yuescript code to Lua code.

Signature:

to_lua: function(code: string, config?: Config):
		--[[codes]] string | nil,
		--[[error]] string | nil,
		--[[globals]] {{string, integer, integer}} | nil

Parameters:

Parameter	Type	Description
code	string	The Yuescript code.
config	Config	[Optional] The compiler options.

Returns:

Return Type	Description
string | nil	The compiled Lua code, or nil if the compilation failed.
string | nil	The error message, or nil if the compilation succeeded.
{{string, integer, integer}} | nil	The global variables appearing in the code (with name, row and column), or nil if the compiler option lint_global is false.

file_exist

Type: Function.

Description:

  The source file existence checking function. Can be overridden to customize the behavior.

Signature:

file_exist: function(filename: string): boolean

Parameters:

Parameter	Type	Description
filename	string	The file name.

Returns:

Return Type	Description
boolean	Whether the file exists.

read_file

Type: Function.

Description:

  The source file reading function. Can be overridden to customize the behavior.

Signature:

read_file: function(filename: string): string

Parameters:

Parameter	Type	Description
filename	string	The file name.

Returns:

Return Type	Description
string	The file content.

insert_loader

Type: Function.

Description:

  Insert the Yuescript loader to the package loaders (searchers).

Signature:

insert_loader: function(pos?: integer): boolean

Parameters:

Parameter	Type	Description
pos	integer	[Optional] The position to insert the loader. Default is 3.

Returns:

Return Type	Description
boolean	Whether the loader is inserted successfully. It will fail if the loader is already inserted.

remove_loader

Type: Function.

Description:

  Remove the Yuescript loader from the package loaders (searchers).

Signature:

remove_loader: function(): boolean

Returns:

Return Type	Description
boolean	Whether the loader is removed successfully. It will fail if the loader is not inserted.

loadstring

Type: Function.

Description:

  Loads Yuescript code from a string into a function.

Signature:

loadstring: function(input: string, chunkname: string, env: table, config?: Config):
		--[[loaded function]] nil | function(...: any): (any...),
		--[[error]] string | nil

Parameters:

Parameter	Type	Description
input	string	The Yuescript code.
chunkname	string	The name of the code chunk.
env	table	The environment table.
config	Config	[Optional] The compiler options.

Returns:

Return Type	Description
function | nil	The loaded function, or nil if the loading failed.
string | nil	The error message, or nil if the loading succeeded.

loadstring

Type: Function.

Description:

  Loads Yuescript code from a string into a function.

Signature:

loadstring: function(input: string, chunkname: string, config?: Config):
		--[[loaded function]] nil | function(...: any): (any...),
		--[[error]] string | nil

Parameters:

Parameter	Type	Description
input	string	The Yuescript code.
chunkname	string	The name of the code chunk.
config	Config	[Optional] The compiler options.

Returns:

Return Type	Description
function | nil	The loaded function, or nil if the loading failed.
string | nil	The error message, or nil if the loading succeeded.

loadstring

Type: Function.

Description:

  Loads Yuescript code from a string into a function.

Signature:

loadstring: function(input: string, config?: Config):
		--[[loaded function]] nil | function(...: any): (any...),
		--[[error]] string | nil

Parameters:

Parameter	Type	Description
input	string	The Yuescript code.
config	Config	[Optional] The compiler options.

Returns:

Return Type	Description
function | nil	The loaded function, or nil if the loading failed.
string | nil	The error message, or nil if the loading succeeded.

loadfile

Type: Function.

Description:

  Loads Yuescript code from a file into a function.

Signature:

loadfile: function(filename: string, env: table, config?: Config):
		nil | function(...: any): (any...),
		string | nil

Parameters:

Parameter	Type	Description
filename	string	The file name.
env	table	The environment table.
config	Config	[Optional] The compiler options.

Returns:

Return Type	Description
function | nil	The loaded function, or nil if the loading failed.
string | nil	The error message, or nil if the loading succeeded.

loadfile

Type: Function.

Description:

  Loads Yuescript code from a file into a function.

Signature:

loadfile: function(filename: string, config?: Config):
		nil | function(...: any): (any...),
		string | nil

Parameters:

Parameter	Type	Description
filename	string	The file name.
config	Config	[Optional] The compiler options.

Returns:

Return Type	Description
function | nil	The loaded function, or nil if the loading failed.
string | nil	The error message, or nil if the loading succeeded.

dofile

Type: Function.

Description:

  Loads Yuescript code from a file into a function and executes it.

Signature:

dofile: function(filename: string, env: table, config?: Config): any...

Parameters:

Parameter	Type	Description
filename	string	The file name.
env	table	The environment table.
config	Config	[Optional] The compiler options.

Returns:

Return Type	Description
any...	The return values of the loaded function.

dofile

Type: Function.

Description:

  Loads Yuescript code from a file into a function and executes it.

Signature:

dofile: function(filename: string, config?: Config): any...

Parameters:

Parameter	Type	Description
filename	string	The file name.
config	Config	[Optional] The compiler options.

Returns:

Return Type	Description
any...	The return values of the loaded function.

find_modulepath

Type: Function.

Description:

  Resolves the Yuescript module name to the file path.

Signature:

find_modulepath: function(name: string): string

Parameters:

Parameter	Type	Description
name	string	The module name.

Returns:

Return Type	Description
string	The file path.

pcall

Type: Function.

Description:

  Calls a function in protected mode. Catches any errors and returns a status code and results or error object. Rewrites the error line number to the original line number in the Yuescript code when errors occur.

Signature:

pcall: function(f: function, ...: any): boolean, any...

Parameters:

Parameter	Type	Description
f	function	The function to call.
...	any	Arguments to pass to the function.

Returns:

Return Type	Description
boolean, ...	Status code and function results or error object.

require

Type: Function.

Description:

  Loads a given module. Can be either a Lua module or a Yuescript module. Rewrites the error line number to the original line number in the Yuescript code if the module is a Yuescript module and loading fails.

Signature:

require: function(name: string): any...

Parameters:

Parameter	Type	Description
modname	string	The name of the module to load.

Returns:

Return Type	Description
any	The value stored at package.loaded[modname] if the module is already loaded.Otherwise, tries to find a loader and returns the final value of package.loaded[modname] and a loader data as a second result.

p

Type: Function.

Description:

  Inspects the structures of the passed values and prints string representations.

Signature:

p: function(...: any)

Parameters:

Parameter	Type	Description
...	any	The values to inspect.

options

Type: Field.

Description:

  The current compiler options.

Signature:

options: Config.Options

traceback

Type: Function.

Description:

  The traceback function that rewrites the stack trace line numbers to the original line numbers in the Yuescript code.

Signature:

traceback: function(message: string): string

Parameters:

Parameter	Type	Description
message	string	The traceback message.

Returns:

Return Type	Description
string	The rewritten traceback message.

compile

Type: Function.

Description:

  Compiles the Yuescript code to Lua code in a thread.

Signature:

compile: function(
		sourceFile: string,
		targetFile: string,
		searchPath: string,
		compileCodesHandler: CompileCodeHandler,
		callback: function(result: boolean)
	)

Parameters:

Parameter	Type	Description
sourceFile	string	The source file name.
targetFile	string	The target file name.
searchPath	string	The extra module search path.
compileCodesHandler	CompileCodeHandler	The callback function to handle the compiled codes.
callback	function	The callback function to handle the result.

is_ast

Type: Function.

Description:

  Checks whether the code matches the specified AST.

Signature:

is_ast: function(astName: string, code: string): boolean

Parameters:

Parameter	Type	Description
astName	string	The AST name.
code	string	The code.

Returns:

Return Type	Description
boolean	Whether the code matches the AST.

AST

Type: Field.

Description:

  The AST type definition with name, row, column and sub nodes.

Signature:

type AST = {string, integer, integer, any}

to_ast

Type: Function.

Description:

  Converts the code to the AST.

Signature:

to_ast: function(code: string, flattenLevel?: number, astName?: string):
		--[[AST]] AST | nil,
		--[[error]] nil | string

Parameters:

Parameter	Type	Description
code	string	The code.
flattenLevel	integer	[Optional] The flatten level. Higher level means more flattening. Default is 0. Maximum is 2.
astName	string	[Optional] The AST name. Default is "File".

Returns:

Return Type	Description
AST | nil	The AST, or nil if the conversion failed.
string | nil	The error message, or nil if the conversion succeeded.

checkAsync

Type: Function.

Description:

  Checks for the problems in the Yuescript code asynchronously. Should be called in a coroutine thread.

Signature:

checkAsync: function(yueCodes: string, searchPath: string):
		--[[info]] {{
			--[[type]] string,
			--[[msg]] string,
			--[[line]] integer,
			--[[col]] integer
		}},
		--[[luaCodes]] string | nil

Parameters:

Parameter	Type	Description
yueCodes	string	The Yuescript code.
searchPath	string	The extra module search path.

Returns:

Return Type	Description
{info}	The problem information with type, message, line and column as an array.
string | nil	The Lua codes when no problem found, or nil if the checking failed.

clear

Type: Function.

Description:

  Clears the compiled macro functions in cache.

Signature:

clear: function()

__call

Type: Metamethod.

Description:

  Requires the Yuescript module. Rewrites the error line number to the original line number in the Yuescript code when loading fails.

Signature:

metamethod __call: function(self: yue, module: string): any...

Parameters:

Parameter	Type	Description
module	string	The module name.

Returns:

Return Type	Description
any	The module value.