banglang

language parser and executor dev test in PHP

This project was made in PHP to help me define the language, I intend to rewrite it in C++ once I have a clear understanding of how it should work The code's not perfect, I only spent a few days in total writing it

developed on windows untested for linux

-- building with phalanger --

change $compPath in build.php to the path of your phalangers phpc.exe

$PHP build.php

-- use --

$PHP bang.php script.bang

or if compiled

bang.exe script.bang

-- current capabilities --

current functions: echo ({variable to write}) : write to the console getFile ({string file path}) : get the string contents of a file or website saveFile ({string file path}, {string variable to write}) : save a string to a file isset ({variable to check}) : check if a variable is set dump ({variable to dump}) : dumps the variable type and contents to the console exec ({string the command to execute}) : executes on the command line lineIn ({string prompt}) : waits for user input from the command line makeThread ({string name of the function to thread}, [{function argument},]) : initiates a thread and returns its id startThread ({int thread id}) : start the thread joinThread ({int thread id}) : waits for the thread to finish

using pthreads causes a seg fault clr threads working when compiled with phalanger (issue with scope)

including files: #include 'file path'

including packages: #package 'package name'

-- options --

-i parse / execution info -p force parse (dont use parsed script from cache) -x only execute (executed an already parsed script)

using options examples:

bang.exe script.lang -i bang.exe script.lang -ix $PHP src/main.php script.lang -ip

-- TODO --

brackets/bidmas

classes threads

scope operators error handeling pointers

-- packages --

file - manipulation web - util string - manipulation array - manipulation types - conversion

-- how classes should work --

c = new cname("hi") c.fn(args)

class cname : cbase {

public name1
private name2

init v1 {  // default public
	this.parent.init(v1)
}

func fn args {
	this.name2 = args
}
fn2 {
	return this.mess + this.name2
}
private prvfn {

}

}

class cbase { protected mess

init v1 {
	this.mess = v1
}

}

-- class info

name extends - class name or false

public vars private vars protected vars

public functions private functions protected functions

notes

statement = validseq then isnext(operator) || validseq then isnext(openfunc) || validseq then isnext(statementEnd) function = validseq then optional validseqs split by white space then openstructure

function a b { echo("hi"); }

if "hello" * 3 == b { echo("hi") }

hello(a b c d e) hi() $ int a = hello (j);

a;
hi = some()
hello()
hello(a)
hello(a,b)
hello(a b c)
hello(hi() howare) + ho + 9 + "jjkjb"
hello('his', boo(hi))
$hi(havethis()+'hi')
@hello(9 1-(3*hello))
hello(a()*7 b)
hello(@hi()*7 hello)
$hi = something()
hi = hello(a);

---

$files = [ 'home/file1' : 'balahblah' 'home/file2' : 'blah2lshavdfg' 'home/file3' : 'dssvyus' ]

if saveFiles(files) { echo "All files saved" } else { echo "Error saving files" }

$&saveFiles saveContents { $saved = [] $out = false;

$saveDone dir ok {
	saved[dir] = ok
	$foundAll = true
	for saveContents as dir : c {
		if !saved[dir] {
			foundAll = false
			break
		}	
	}
	if foundAll {
		out = true
	}
}

$thread saveFile dir content {
	ok = file.save(dir content)
}
end {
	saveDone(dir, ok)
}

for saveContents as dir : content {
	saveFile(dir content)
}

} end { return out }

---

$class session { public id private vars = []

init sessid {
	id = sessid
	for sessid as char {
		if (!alpha(char) && !numeric(char)) {
			return false
		}
	}
	return true
}

set name val {
	vars[name] = val
}
get name {
	return vars[name]
}
getVars {
	return vars
}

}

sessions = []

&thread SERVER requestData { sess; if (sessions[requestData.cookies.]) { sess = sessions[requestData.cookies.] } else { sess = sessions[requestData.cookies.] = session(requestData.cookies.) }

sess.set(time(), requestData.url)
reply("the page you are on is "+requestData.url)

} port { return 80 }

out( out v {

if a == "hello", "hi" { out(a); }

out v { echo v; }

code must start with: statement or function validSequence, statement = scopeDeclarations, structure = structureNames

on parsecode ret = array(code => array, functions=> array) go though each line if statement - function call or variable declaration ret[code][] = array('type' => 'statement', 'code' => parsestatement(line)) if structure - if for ret[code][] = array('type' => 'if', 'condition' => parsecondition(condline) 'code' => parsecode(lines)) if function ret[functions][] = array('name' => name, 'args' => parseargs(args), 'code' => parsecode(lines)

return ret