Wa-lang - Programming language

Wa-lang is an open source programming language created in 2022 by Shushan Chai and Ernan Ding.

#176on PLDB

4Years Old

Download source code:

git clone https://github.com/wa-lang/wa

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Wa-lang is a general-purpose programming language designed for for WebAssembly. The goal is to provide a simple, reliable, easy-to-use, statically typed language for high-performance web applications. The code generator and runtime are fully independently developed (not dependent on external projects such as LLVM). Currently, Wa-lang is in the engineering trial stage.

Tags: programming language
Wa-lang is developed on GitHub and has 1,380 stars
Early development of Wa-lang happened in 武汉市江夏区凹语言开发工作室
C and C++ and Go and WebAssembly influenced the design of Wa-lang
Wa-lang is written in Wa-lang, Go, Assembly language, C, JavaScript
1 PLDB concepts link to Wa-lang: Wa-lang

Example from the web:

 import "fmt"
 
 global year: i32 = 2023
 
 func main {
     println("hello, Wa!")
     println(add(40, 2), year)
 
     fmt.Println(1+1)
 }
 
 func add(a: i32, b: i32) => i32 {
     return a+b
 }

Wa-lang Keywords

break case const continue default defer else for func if import interface map range return struct switch type global

Language features

Feature	Supported	Example	Token
Standard Library	✓	fmt.Println("Hello, World!")
Floats	✓	// \d+(\.\d+[eE][+\-]?\d+\|\.\d*\|[eE][+\-]?\d+)
Hexadecimals	✓	// 0[xX][0-9a-fA-F]+
Octals	✓	// 0[0-7]+
Conditionals	✓
Switch Statements	✓
Constants	✓
Case Sensitivity	✓
Assignment	✓		=
Print() Debugging	✓		println
Message Passing	✓
Line Comments	✓	// A comment	//
Variadic Functions	✓	// This variadic function takes an arbitrary number of ints as arguments. func sum(nums: ...int) { print("The sum of ", nums) // Also a variadic function. total := 0 for _, num := range nums { total += num } println(" is", total) // Also a variadic function. }
Type Inference	✓
Operator Overloading	✓	#wa:operator + MyInt_add type MyInt :struct { V: int } func MyInt_add(x, y: MyInt) => int { return x.V + y.V } func main { x1 := MyInt{V: 100} x2 := MyInt{V: 42} println(x1 + x2) }
File Imports	✓	import ( "math" "strings" ) import "strings" => . import "io" => _ import "math" => m
Increment and decrement operators	✓	i := 0 i++ i--
Integers	✓	i, j := 42, 2701
Booleans	✓	c := true
MultiLine Comments	✓	/* A comment */	/* */
Comments	✓	// A comment
Pointers	✓	func main { i, j := 42, 2701 p := &i // point to i println(p) // read i through the pointer p = 21 // set i through the pointer println(i) // see the new value of i p = &j // point to j p = p / 37 // divide j through the pointer println(j) // see the new value of j }
Strings	✓	"hello world"	"
Case Insensitive Identifiers	X
Semantic Indentation	X