Volt - Programming language

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Volt is an open source programming language created in 2011.

#675on PLDB

13Years Old

158Repos

Download source code:

git clone https://github.com/VoltLang/Volta

Homepage · Source Code

Volt is a C-inspired programming language that toes the line between expressiveness and control.

Tags: programming language
Volt is developed on GitHub and has 153 stars
There are at least 158 Volt repos on GitHub
Volt is written in D, Markdown, C, Assembly language, TOML, Make, JSON, XML, reStructuredText
The Google BigQuery Public Dataset GitHub snapshot shows 298 users using Volt in 351 repos on GitHub
GitHub supports syntax highlighting for Volt
volt-lang.org was registered in 2013

Example from Linguist:

// Copyright © 2012-2013, Jakob Bornecrantz.  All rights reserved.
// See copyright notice in src/volt/license.d (BOOST ver. 1.0).
module main;

import core.stdc.stdio;
import core.stdc.stdlib;

import watt.process;
import watt.path;

import results;
import list;
import cmd;

int main()
{
	auto cmdGroup = new CmdGroup();
	bool printOk = true;
	bool printImprovments = true;
	bool printFailing = true;
	bool printRegressions = true;
	string compiler = getEnv("VOLT");

	if (compiler is null) {
		printf("compiler envar not set\n".ptr);
		return -1;
	}

	/// @todo Scan for files
	auto tests = testList;

	int total;
	int passed;
	int failed;
	int improved;
	int regressed;

	auto rets = new Result[] (tests.length);
	for (size_t i; i < tests.length; i++) {
		rets[i] = new Result();
		rets[i].runTest(cmdGroup, tests[i], compiler);
	}

	cmdGroup.waitAll();

	for (size_t i; i < tests.length; i++) {
		auto ret = rets[i];
		total++;
		if (ret.ok) {
			passed++;
			improved += cast(int)!ret.hasPassed;

			if (!ret.hasPassed && printImprovments) {
				printf("%s: %s, improved!\n".ptr, ret.test.ptr, ret.msg.ptr);
			} else if (printOk) {
				printf("%s: %s\n".ptr, ret.test.ptr, ret.msg.ptr);
			}
		} else {
			failed++;
			regressed += cast(int)ret.hasPassed;


			if (ret.hasPassed && printRegressions) {
				printf("%s: %s, regressed!\n".ptr, ret.test.ptr, ret.msg.ptr);
			} else if (printFailing) {
				printf("%s: %s\n".ptr, ret.test.ptr, ret.msg.ptr);
			}
		}
		fflush(stdout);
	}

	auto xml = fopen("results.xml".ptr, "w+".ptr);
	if (xml !is null) {
		fprintf(xml, "<testsuites errors=\"%u\" failures=\"%u\" tests=\"%u\">\n".ptr,
				regressed, failed - regressed, total);
		for (size_t i; i < rets.length; i++) {
			rets[i].xmlLog(xml);
		}
		fprintf(xml, "</testsuites>\n".ptr);
		fflush(xml);
		fclose(xml);
		xml = null;
	}

	auto rate = cast(float)passed / cast(float)total * 100.f;
	printf("Summary: %i tests, %i pass%s, %i failure%s, %.2f%% pass rate, %i regressions, %i improvements.\n".ptr,
	       total,
	       passed, (passed == 1 ? "".ptr : "es".ptr),
	       failed, (failed == 1 ? "".ptr : "s".ptr),
	       cast(double)rate, regressed, improved);

	return regressed ? -1 : 0;
}

Language features

Feature	Supported	Example	Token
Print() Debugging	✓		printf
Comments	✓	// A comment
Line Comments	✓	// A comment	//
Semantic Indentation	X