fakescript

Lightweight embedded scripting language

Brief introduction 中文

fakescript is a lightweight embedded scripting language , using Java language, grammar lessons from lua, golang, erlang, based on jflex, bison generative grammar tree , compiled into byte code interpreted. fakescript for C/C++

Script feature

The syntax is similar to lua
All function
Support array, map, unlimited nested
Support generating routine like fake testfunc (param1), to achieve the effect of multithreading
Support binding Java Static functions and Java class member functions
With interpreter
Support multi return value
Support profile, can get the script running time of each function
Support hot update
Support Int64
Support const definitions
Support Package
Support struct
Support byte code optimize
Support global map

Sample



-- Current package name
package mypackage.test

-- include file
include "common.fk"

-- struct define
struct teststruct
	sample_a
	sample_b
	sample_c
end

-- const define
const hellostring = "hello"
const helloint = 1234
const hellomap = {1 : "a" 2 : "b" 3 : [1 2 3]}

-- func1 comment
func myfunc1(arg1, arg2)
	
	-- Java static function calls and Java class member functions
	arg3 := cfunc1(helloint) + arg2:memfunc1(arg1)
	
	-- Branch
	if arg1 < arg2 then	
		-- create routine
		fake myfunc2(arg1, arg2)
	elseif arg1 == arg2 then	
		print("elseif")
	else
		print("else")
	end
	
	-- for loop
	for var i = 0, i < arg2, i++ then
		print("i = ", i)
	end
	
	-- array use
	var a = array()
	a[1] = 3
	
	-- map use
	var b = map()
	b[a] = 1
	b[1] = a
	
	-- Int64
	var uid = 1241515236123614u
	log("uid = ", uid)

	-- sub func call
	var ret1, var ret2 = myfunc2()

	-- other package call
	ret1 = otherpackage.test.myfunc1(arg1, arg2)
	
	-- struct use
	var tt = teststruct()
	tt->sample_a = 1
	tt->sample_b = teststruct()
	tt->sample_b->sample_a = 10

	-- switch branch
	switch arg1
		case 1 then
			print("1")
		case "a" then
			print("a")
		default
			print("default")
	end

	-- multi return value
	return arg1, arg3
	
end

Java Sample

// create instance
fake f = fk.newfake(null);
// regist all func marked with @fakescript in package
fk.reg(f, "com.test");
// parse script file
fk.parse(f, "test.fk");
// run script func myfunc1, put in two param 1 and 2
double ret = (double)fk.run(f, "myfunc1", 1, 2);

How to use

Maven

<dependency>
    <groupId>com.github.esrrhs</groupId>
    <artifactId>fakescript-java</artifactId>
    <version>1.0.12</version>
</dependency>

Debugging environment

Command-line

Welcome to donate

Donated money will be used to improve performance and subsequent continuous optimization fakescript

youwi/fakescript-java