some thesis fixes

Reviewed-on: #33

.github/workflows/tagged-release.yml

@@ -25,10 +25,14 @@ jobs:
           gradle-version: "8.10"
       - name: Build
         run: gradle build
+      - name: Publish
+        run: gradle publish
+        env:
+          ACCESS_TOKEN: "${{secrets.PACKAGE_TOKEN}}"
+          REPO_URL: "${{github.server_url}}/api/packages/${{github.repository_owner}}/maven"
       - name: Create release
         uses: "https://gitea.com/actions/gitea-release-action@main"
         with:
-          # api_key: "${{secrets.TOKEN}}"
           files: |
             LICENSE
             build/libs/*.jar

.gitignore

@@ -1,6 +1,40 @@
 /*
 
-!/src
+/buildSrc/*
+!/buildSrc
+!/buildSrc
+!/buildSrc/src
+!/buildSrc/build.gradle.kts
+
+/common/*
+!/common
+!/common/src
+!/common/build.gradle.kts
+
+/runtime/*
+!/runtime
+!/runtime/src
+!/runtime/build.gradle.kts
+
+/compilation/*
+!/compilation
+!/compilation/src
+!/compilation/build.gradle.kts
+
+/repl/*
+!/repl
+!/repl/src
+!/repl/build.gradle.kts
+
+/lib/*
+!/lib
+!/lib/src
+!/lib/build.gradle.kts
+!/lib/package.json
+!/lib/tsconfig.json
+!/lib/rollup.config.js
+
+# !/src
 !/doc
 !/tests
 !/.github
@@ -10,8 +44,8 @@
 !/LICENSE
 !/README.md
 
-!/settings.gradle
-!/build.gradle
+!/settings.gradle.kts
+!/build.gradle.kts
 !/gradle.properties
 
 !/package.json

README.md

@@ -2,22 +2,76 @@
 
 **WARNING: Currently, this code is undocumented. Proceed with caution and a psychiatrist.**
 
-J2S is an engine, capable of running EcmaScript 5, written entirely in Java. This engine has been developed with the goal of being easy to integrate with your preexisting codebase, **THE GOAL OF THIS ENGINE IS NOT PERFORMANCE**. My crude experiments show that this engine is 50x-100x slower than V8, which, although bad, is acceptable for most simple scripting purposes. Note that although the codebase has a Main class, this isn't meant to be a standalone program, but instead a library for running JavaScript code.
+J2S is an engine, capable of running EcmaScript 5, written entirely in Java. This engine has been developed with the goal of being easy to integrate with your preexisting codebase, **THE GOAL OF THIS ENGINE IS NOT PERFORMANCE**. My crude experiments show that this engine is 50x-100x slower than V8, which, although bad, is acceptable for most simple scripting purposes. A small REPL (`me.topchetoeu.j2s.repl.SimpleRepl`) library with an included simple debugger (`me.topchetoeu.j2s.repl.debug.SimpleDebugger`). These are more or less reference implementations. In the future, most of the primordials logic of `SimpleRepl` will be moved in the "lib" project, but for now, it will stay there.
 
-## Example
+## How to use?
 
-The following is going to execute a simple javascript statement:
+Since this is mostly targeted for integration into other applications, here, examples for invoking JS code from Java will be shown. In the future, a more comprehensive wiki will be made.
+
+### Setting up an event loop
+
+First of all, you will want to create an event loop. While not required, 99% of the times you will want to have one.
 
 ```java
 var engine = new Engine();
-// Initialize a standard environment, with implementations of most basic standard libraries (Object, Array, Symbol, etc.)
-var env = Internals.apply(new Environment());
-
-// Queue code to load internal libraries and start engine
-var awaitable = engine.pushMsg(false, env, new Filename("tmp", "eval"), "10 + Math.sqrt(5 / 3)", null);
-// Run the engine on the same thread, until the event loop runs empty
-engine.run(true);
-
-// Get our result
-System.out.println(awaitable.await());
+var thread = engine.start();
 ```
+
+Hooray! Now you have an event loop. The thread that was automatically created is a daemon thread, so it will harakiri when the rest of the application ends. If you don't want to use the built-in thread, you can instead run it with `engine.run(untilEmpty)`. If you pass true (which you most likely need), the event loop will be run blocking-ly until it is empty. Otherwise, it will be run forever.
+
+### Creating the execution environment
+
+This is one of the other crucial parts of J2S's architecture - the environment. It contains the global scope, a reference to the event loop, the global scope, the debugger, source mappings and a lot more. To run JS code, you must create an environment:
+
+```java
+var env = Environment.empty();
+env.add(EventLoop.KEY, engine); // Gives 
+env.add(DebugContext.KEY, new DebugContext()); // For source mappings
+```
+
+As you can see, the environment is nothing more than a simple map of objects that may be of interest to the JS code. Although you can do much more with the environment, we will leave it at that.
+
+### Registering the compiler
+
+Since the compiler is a part of the runtime, you need to register it in the environment. You can use the following boilerplate, although a nicer API will be exposed later on:
+
+```java
+env.add(Compiler.KEY, (_env, filename, raw, mapper) -> {
+	try {
+		// Invokes the compiler. Will return a CompilerResult, which, along other things,
+		// gives us all the compiled function bodies (aka function scaffoldings, that can be used to construct a function value)
+		var res = JavaScript.compile(env, filename, raw, true);
+		var body = res.body();
+
+		// We'll register the source and function source mappings for debugging
+		DebugContext.get(env).onSource(filename, raw);
+		for (var el : res.all()) {
+			DebugContext.get(env).onFunctionLoad(el.body(), el.map(mapper));
+		}
+
+		// Finally, we will construct the function
+		// Few things to note: we need to pass the environment, the name of the function (the filename),
+		// and the last thing: the captures. Since we are compiling the main function, we don't have
+		// any captures, so we pass an empty array
+		return new CodeFunction(env, filename.toString(), body, new Value[0][]);
+	}
+	catch (SyntaxException e) {
+		// Convert the exception to an engine exception
+		var res = EngineException.ofSyntax(e.msg);
+		// Add the location of the error to its stack trace
+		res.add(env, e.loc.filename() + "", e.loc);
+		throw res;
+	}
+});
+```
+
+### Evaluating a piece of code on the event loop
+
+This is what you really want to do: run code! You can do that in the following way:
+
+```java
+var result = engine.pushMsg(false, env, Filename.parse("my-app://test.js"), "return 10 + 5 / 3;", Value.UNDEFINED).get();
+System.out.println(result.toReadable(env));
+```
+
+If all goes well, we will get "11.666..." as a result.

build.gradle

@@ -1,128 +0,0 @@
-import java.text.SimpleDateFormat
-
-plugins {
-	id 'application';
-	id 'com.github.node-gradle.node' version '5.0.0';
-	id 'net.nemerosa.versioning' version '2.15.0';
-	id 'org.ajoberstar.grgit' version '5.0.0-rc.3'; // required by gradle
-
-	// TODO: figure out how to integrate proguard
-	// id "com.github.xaverkapeller.proguard-annotations"
-}
-
-base.archivesName = project.project_name;
-version = project.project_version;
-group = project.project_group;
-description = 'ES5-compliant JavaScript interpreter';
-
-node {
-	version = '20.0.0';
-	npmVersion = '8.0.0';
-	download = true;
-}
-
-task compileEnv(type: NpmTask) {
-	dependsOn npmInstall;
-
-	inputs.files('rollup.config.js');
-	inputs.dir('src/lib/libs');
-	outputs.files("build/js/env.js");
-
-	// group = 'build'
-	args = ['run', 'build-env'];
-}
-task compileTypescript(type: NpmTask) {
-	dependsOn npmInstall;
-
-	inputs.files('rollup.config.js');
-	inputs.dir('src/lib/transpiler');
-	outputs.files("build/js/ts.js");
-	// nom nom tasty ram
-	environment.put("NODE_OPTIONS", "--max-old-space-size=4096");
-
-	// group = 'build'
-	args = ['run', 'build-ts'];
-}
-
-
-repositories {
-	mavenCentral();
-}
-
-dependencies {
-	annotationProcessor 'com.github.bsideup.jabel:jabel-javac-plugin:0.4.2';
-	compileOnly 'com.github.bsideup.jabel:jabel-javac-plugin:0.4.2';
-	testImplementation 'org.junit.jupiter:junit-jupiter:5.9.2';
-	testRuntimeOnly 'org.junit.platform:junit-platform-launcher';
-}
-
-java {
-	sourceCompatibility = JavaVersion.VERSION_17;
-	targetCompatibility = JavaVersion.VERSION_17;
-
-	toolchain {
-		languageVersion = JavaLanguageVersion.of(17);
-	}
-}
-
-configure([tasks.compileJava]) {
-	options.release = 8;
-}
-
-jar {
-	manifest {
-		attributes(
-			'Main-Class': project.main_class,
-			'Build-Timestamp': new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ").format(new Date()),
-			'Build-Branch': versioning.info.branch,
-			'Build-Revision': versioning.info.commit,
-			'Build-Jdk': "${System.properties['java.version']} (${System.properties['java.vendor']} ${System.properties['java.vm.version']})",
-			'Build-Author': 'TopchetoEU',
-		);
-	}
-}
-
-application {
-	mainClass = project.main_class;
-	applicationDefaultJvmArgs = ['-Xmx2G', '-Xms2G', '-server', '-Dfile.encoding=UTF-8'];
-}
-
-distZip {
-	eachFile { file ->
-		if (file.path.contains('bin')) {
-			file.exclude();
-		}
-	}
-}
-
-distTar {
-	eachFile { file ->
-		if (file.path.contains('bin')) {
-			file.exclude();
-		}
-	}
-}
-
-processResources {
-	dependsOn compileEnv;
-	dependsOn compileTypescript;
-
-	from("build/js") {
-		into "lib";
-	}
-
-	filesMatching "metadata.json", {
-		expand(
-			version: project.project_version,
-			name: project.project_name,
-		);
-	}
-}
-
-test {
-	useJUnitPlatform();
-}
-
-wrapper {
-	gradleVersion = '8.10';
-}

build.gradle.kts

@@ -0,0 +1,23 @@
+plugins {
+	id("base");
+}
+
+version = properties["project_version"].toString();
+group = properties["project_group"].toString();
+description = "ES5-compliant JavaScript interpreter";
+
+tasks.wrapper {
+	gradleVersion = "8.10";
+}
+
+tasks.build {
+	for (proj in subprojects) {
+		dependsOn(proj.tasks.named("build"));
+		doLast {
+			copy {
+				from(proj.buildDir.resolve("libs"));
+				into("$buildDir/libs");
+			}
+		}
+	}
+}

buildSrc/build.gradle.kts

@@ -0,0 +1,7 @@
+repositories {
+	mavenCentral();
+}
+
+plugins {
+	`kotlin-dsl`
+}

buildSrc/src/main/kotlin/common-java.gradle.kts

@@ -0,0 +1,15 @@
+plugins {
+	id("common");
+}
+
+java {
+	sourceCompatibility = JavaVersion.VERSION_17;
+	targetCompatibility = JavaVersion.VERSION_17;
+
+	toolchain {
+		languageVersion = JavaLanguageVersion.of(17);
+	}
+
+	withJavadocJar();
+	withSourcesJar();
+}

buildSrc/src/main/kotlin/common.gradle.kts

@@ -0,0 +1,47 @@
+plugins {
+	id("java");
+	id("maven-publish");
+}
+
+version = rootProject.version;
+group = rootProject.group;
+base.archivesName = "${properties["project_name"]}-${project.name}";
+
+tasks.named<JavaCompile>("compileJava") {
+	options.release.set(8);
+}
+
+repositories {
+	mavenCentral();
+}
+
+dependencies {
+	annotationProcessor("com.github.bsideup.jabel:jabel-javac-plugin:0.4.2");
+	compileOnly("com.github.bsideup.jabel:jabel-javac-plugin:0.4.2");
+	testImplementation("org.junit.jupiter:junit-jupiter:5.9.2");
+	testRuntimeOnly("org.junit.platform:junit-platform-launcher");
+}
+
+
+publishing {
+	repositories {
+		maven {
+			name = "Gitea";
+			url = uri(System.getenv("REPO_URL") ?: "");
+
+			credentials(HttpHeaderCredentials::class) {
+				name = "Authorization";
+				value = "token ${System.getenv("ACCESS_TOKEN")}";
+			}
+
+			authentication {
+				create<HttpHeaderAuthentication>("header");
+			}
+		}
+	}
+	publications {
+		create<MavenPublication>("maven") {
+			from(components["java"]);
+		}
+	}
+}

common/build.gradle.kts

@@ -0,0 +1,18 @@
+plugins {
+	id("common-java");
+}
+
+description = "A collection of utils and structures for the rest of the project";
+
+tasks.processResources {
+	filesMatching("metadata", {
+		expand(
+			"version" to properties["project_version"],
+			"name" to properties["project_name"],
+		);
+	});
+}
+
+tasks.test {
+	useJUnitPlatform();
+}

common/src/main/java/me/topchetoeu/j2s/common/Environment.java

@@ -1,4 +1,4 @@
-package me.topchetoeu.j2s.common.environment;
+package me.topchetoeu.j2s.common;
 
 import java.util.HashMap;
 import java.util.HashSet;
@@ -63,9 +63,12 @@ public class Environment {
 	}
 
 	public <T> T init(Key<T> key, T val) {
-		if (!has(key)) this.add(key, val);
+		if (!has(key)) {
+			this.add(key, val);
 			return val;
 		}
+		else return get(key);
+	}
 	public <T> T initFrom(Key<T> key, Supplier<T> val) {
 		if (!has(key)) {
 			var res = val.get();

common/src/main/java/me/topchetoeu/j2s/common/Filename.java

@@ -1,4 +1,4 @@
-package me.topchetoeu.j2s.common.parsing;
+package me.topchetoeu.j2s.common;
 
 import java.io.File;
 

common/src/main/java/me/topchetoeu/j2s/common/FunctionMap.java

@@ -0,0 +1,62 @@
+package me.topchetoeu.j2s.common;
+
+import java.util.Arrays;
+import java.util.regex.Pattern;
+
+import me.topchetoeu.j2s.common.Instruction.BreakpointType;
+
+public interface FunctionMap {
+	public static final FunctionMap EMPTY = new FunctionMap() {
+		@Override public Location first() {
+			return null;
+		}
+		@Override public Location last() {
+			return null;
+		}
+
+		@Override public Location toLocation(int i, boolean approximate) {
+			return null;
+		}
+
+		@Override public BreakpointType getBreakpoint(int i) {
+			return BreakpointType.NONE;
+		}
+		@Override public Iterable<Location> breakpoints(Location start, Location end) {
+			return Arrays.asList();
+		}
+
+		@Override public Location correctBreakpoint(Location i) {
+			return null;
+		}
+		@Override public Iterable<Location> correctBreakpoint(Pattern filename, int line, int column) {
+			return Arrays.asList();
+		}
+
+		@Override public String[] localNames() {
+			return null;
+		}
+		@Override public String[] capturableNames() {
+			return null;
+		}
+		@Override public String[] captureNames() {
+			return null;
+		}
+	};
+
+	Location first();
+	Location last();
+
+	Location toLocation(int i, boolean approximate);
+	default Location toLocation(int i) {
+		return toLocation(i, false);
+	}
+
+	BreakpointType getBreakpoint(int i);
+	Location correctBreakpoint(Location i);
+	Iterable<Location> correctBreakpoint(Pattern filename, int line, int column);
+	Iterable<Location> breakpoints(Location start, Location end);
+
+	String[] localNames();
+	String[] capturableNames();
+	String[] captureNames();
+}

common/src/main/java/me/topchetoeu/j2s/common/Instruction.java

@@ -4,8 +4,6 @@ import java.util.HashMap;
 import java.util.function.IntFunction;
 import java.util.function.IntSupplier;
 
-import me.topchetoeu.j2s.common.parsing.Location;
-
 public class Instruction {
 	public static enum Type {
 		RETURN(0x00),
@@ -33,7 +31,6 @@ public class Instruction {
 		LOAD_FUNC(0x30),
 		LOAD_ARR(0x31),
 		LOAD_OBJ(0x32),
-		LOAD_REGEX(0x33),
 
 		LOAD_GLOB(0x38),
 		LOAD_INTRINSICS(0x39),
@@ -54,15 +51,11 @@ public class Instruction {
 		STORE_MEMBER_INT(0x4A),
 		STORE_MEMBER_STR(0x4B),
 
-		DEF_PROP(0x50),
-		DEF_FIELD(0x51),
-		KEYS(0x52),
-		TYPEOF(0x53),
-		OPERATION(0x54),
+		GLOB_GET(0x50),
+		GLOB_SET(0x51),
+		GLOB_DEF(0x52),
 
-		GLOB_GET(0x60),
-		GLOB_SET(0x61),
-		GLOB_DEF(0x62);
+		OPERATION(0x56);
 
 		private static final HashMap<Integer, Type> types = new HashMap<>();
 		public final int numeric;
@@ -289,9 +282,6 @@ public class Instruction {
 		return new Instruction(Type.LOAD_MEMBER_STR, member);
 	}
 
-	public static Instruction loadRegex(String pattern, String flags) {
-		return new Instruction(Type.LOAD_REGEX, pattern, flags);
-	}
 	// TODO: make this capturing a concern of the compiler
 	public static Instruction loadFunc(int id, String name, int[] captures) {
 		var args = new Object[2 + captures.length];
@@ -313,8 +303,8 @@ public class Instruction {
 		return new Instruction(Type.DUP, count, offset);
 	}
 
-	public static Instruction storeVar(int i, boolean keep, boolean initialize) {
-		return new Instruction(Type.STORE_VAR, i, keep, initialize);
+	public static Instruction storeVar(int i, boolean keep) {
+		return new Instruction(Type.STORE_VAR, i, keep);
 	}
 
 	public static Instruction storeMember() {
@@ -342,24 +332,6 @@ public class Instruction {
 		return new Instruction(Type.DISCARD);
 	}
 
-	public static Instruction typeof() {
-		return new Instruction(Type.TYPEOF);
-	}
-	public static Instruction typeof(String varName) {
-		return new Instruction(Type.TYPEOF, varName);
-	}
-
-	public static Instruction keys(boolean own, boolean onlyEnumerable) {
-		return new Instruction(Type.KEYS, own, onlyEnumerable);
-	}
-
-	public static Instruction defProp(boolean setter) {
-		return new Instruction(Type.DEF_PROP, setter);
-	}
-	public static Instruction defField() {
-		return new Instruction(Type.DEF_FIELD);
-	}
-
 	public static Instruction operation(Operation op) {
 		return new Instruction(Type.OPERATION, op);
 	}

common/src/main/java/me/topchetoeu/j2s/common/Key.java

@@ -0,0 +1,3 @@
+package me.topchetoeu.j2s.common;
+
+public final class Key<T> { }

common/src/main/java/me/topchetoeu/j2s/common/Location.java

@@ -1,10 +1,8 @@
-package me.topchetoeu.j2s.common.parsing;
+package me.topchetoeu.j2s.common;
 
 import java.util.ArrayList;
 import java.util.Objects;
 
-import me.topchetoeu.j2s.common.Metadata;
-
 public abstract class Location implements Comparable<Location> {
 	public static final Location INTERNAL = Location.of(new Filename(Metadata.name(), "native"), -1, -1);
 
@@ -32,9 +30,9 @@ public abstract class Location implements Comparable<Location> {
 		};
 	}
 	public final Location nextLine() {
-		return changeLine(1);
+		return nextLine(1);
 	}
-	public final Location changeLine(int offset) {
+	public final Location nextLine(int offset) {
 		var self = this;
 
 		return new Location() {
@@ -60,7 +58,14 @@ public abstract class Location implements Comparable<Location> {
 	}
 
 	@Override public int compareTo(Location other) {
-		int a = filename().toString().compareTo(other.filename().toString());
+		int a;
+		var filenameA = filename();
+		var filenameB = other.filename();
+		if (filenameB == null && filenameA == null) a = 0;
+		else if (filenameA == null) a = -1;
+		else if (filenameB == null) a = 1;
+		else a = filenameA.toString().compareTo(filenameB.toString());
+
 		int b = Integer.compare(line(), other.line());
 		int c = Integer.compare(start(), other.start());
 
@@ -79,21 +84,27 @@ public abstract class Location implements Comparable<Location> {
 	}
 
 	public static Location of(String raw) {
-		var i0 = raw.lastIndexOf(':');
-		if (i0 < 0) return Location.of(Filename.parse(raw), -1, -1);
+		var i1 = raw.lastIndexOf(':');
+		if (i1 < 0) return Location.of(Filename.parse(raw), -1, -1);
 
-		var i1 = raw.lastIndexOf(':', i0);
+		var i0 = raw.substring(0, i1).lastIndexOf(':', i1);
 		if (i0 < 0) {
 			try {
-				return Location.of(Filename.parse(raw.substring(0, i0)), Integer.parseInt(raw.substring(i0 + 1)), -1);
+				return Location.of(null, Integer.parseInt(raw.substring(0, i1)) - 1, Integer.parseInt(raw.substring(i1 + 1)) - 1);
 			}
-			catch (NumberFormatException e) {
+			catch (NumberFormatException e) {}
+
+			try {
+				return Location.of(Filename.parse(raw.substring(0, i1)), Integer.parseInt(raw.substring(i1 + 1)) - 1, -1);
+			}
+			catch (NumberFormatException e) {}
+
 			return Location.of(Filename.parse(raw), -1, -1);
 		}
-		}
 
 		int start, line;
 
+
 		try {
 			start = Integer.parseInt(raw.substring(i1 + 1));
 		}
@@ -105,9 +116,9 @@ public abstract class Location implements Comparable<Location> {
 			line = Integer.parseInt(raw.substring(i0 + 1, i1));
 		}
 		catch (NumberFormatException e) {
-			return Location.of(Filename.parse(raw.substring(i1 + 1)), start, -1);
+			return Location.of(Filename.parse(raw.substring(0, i1)), start - 1, -1);
 		}
 
-		return Location.of(Filename.parse(raw.substring(0, i0)), start, line);
+		return Location.of(Filename.parse(raw.substring(0, i0)), line - 1, start - 1);
 	}
 }

common/src/main/java/me/topchetoeu/j2s/common/Metadata.java

@@ -0,0 +1,58 @@
+package me.topchetoeu.j2s.common;
+
+public class Metadata {
+	private static String VERSION;
+	private static String AUTHOR;
+	private static String NAME;
+
+	static {
+		var raw = Reading.resourceToString("metadata").split("\n");
+		var line = 0;
+		var file = "internal://metadata";
+
+		for (var el : raw) {
+			line++;
+
+			el = el.trim();
+			if (el.startsWith("#")) continue;
+			if (el.isEmpty()) continue;
+
+			var i = el.indexOf(":");
+			if (i < 0) throw new RuntimeException(String.format("%s:%s: Expected colon on line", file, line));
+
+			var name = el.substring(0, i).trim();
+			var value = el.substring(i + 1).trim();
+
+			switch (name) {
+				case "version":
+					VERSION = value;
+					break;
+				case "author":
+					AUTHOR = value;
+					break;
+				case "name":
+					NAME = value;
+					break;
+				default:
+					throw new RuntimeException(String.format("%s:%s: Unexpected metadata key '%s'", file, line, name));
+			}
+		}
+
+		if (VERSION == null) throw new RuntimeException(String.format("%s:%s: No version specified", file, line));
+		if (AUTHOR == null) throw new RuntimeException(String.format("%s:%s: No author specified", file, line));
+		if (NAME == null) throw new RuntimeException(String.format("%s:%s: No name specified", file, line));
+	}
+
+	public static String version() {
+		if (VERSION.equals("${VERSION}")) return "1337-devel";
+		else return VERSION;
+	}
+	public static String author() {
+		if (AUTHOR.equals("${AUTHOR}")) return "anonymous";
+		else return AUTHOR;
+	}
+	public static String name() {
+		if (NAME.equals("${NAME}")) return "some-product";
+		else return NAME;
+	}
+}

common/src/main/java/me/topchetoeu/j2s/common/Operation.java

@@ -0,0 +1,55 @@
+package me.topchetoeu.j2s.common;
+
+import java.util.HashMap;
+
+public enum Operation {
+	TYPEOF(0x10, 1),
+	INSTANCEOF(0x11, 2),
+	IN(0x12, 2),
+
+	MULTIPLY(0x20, 2),
+	DIVIDE(0x21, 2),
+	MODULO(0x22, 2),
+	ADD(0x23, 2),
+	SUBTRACT(0x24, 2),
+
+	USHIFT_RIGHT(0x30, 2),
+	SHIFT_RIGHT(0x31, 2),
+	SHIFT_LEFT(0x32, 2),
+
+	GREATER(0x40, 2),
+	LESS(0x41, 2),
+	GREATER_EQUALS(0x42, 2),
+	LESS_EQUALS(0x43, 2),
+	LOOSE_EQUALS(0x44, 2),
+	LOOSE_NOT_EQUALS(0x45, 2),
+	EQUALS(0x46, 2),
+	NOT_EQUALS(0x47, 2),
+
+	AND(0x50, 2),
+	OR(0x51, 2),
+	XOR(0x52, 2),
+
+	NEG(0x60, 1),
+	POS(0x61, 1),
+	NOT(0x62, 1),
+	INVERSE(0x63, 1);
+
+	private static final HashMap<Integer, Operation> operations = new HashMap<>();
+
+	static {
+		for (var val : Operation.values()) operations.put(val.numeric, val);
+	}
+
+	public final int numeric;
+	public final int operands;
+
+	private Operation(int numeric, int n) {
+		this.numeric = numeric;
+		this.operands = n;
+	}
+
+	public static Operation fromNumeric(int i) {
+		return operations.get(i);
+	}
+}

common/src/main/java/me/topchetoeu/j2s/common/StringifyUtils.java

@@ -0,0 +1,123 @@
+package me.topchetoeu.j2s.common;
+
+import java.math.BigDecimal;
+
+public class StringifyUtils {
+	public static String quoteString(String raw) {
+		var res = new StringBuilder("\"");
+		var alphabet = "0123456789ABCDEF".toCharArray();
+
+		for (var c : raw.toCharArray()) {
+			if (c < 32 || c >= 127) {
+				res
+					.append("\\u")
+					.append(alphabet[(c >> 12) & 0xF])
+					.append(alphabet[(c >> 8) & 0xF])
+					.append(alphabet[(c >> 4) & 0xF])
+					.append(alphabet[(c >> 0) & 0xF]);
+			}
+			else if (c == '\\')
+				res.append("\\\\");
+			else if (c == '"')
+				res.append("\\\"");
+			else res.append(c);
+		}
+
+		return res.append('"').toString();
+	}
+
+	public static String quoteNumber(Double num) {
+		if (num == Double.NEGATIVE_INFINITY) return "-Infinity";
+		if (num == Double.POSITIVE_INFINITY) return "Infinity";
+		if (Double.isNaN(num)) return "NaN";
+		return BigDecimal.valueOf(num).stripTrailingZeros().toPlainString();
+	}
+
+	private static double power(double a, long b) {
+		if (b == 0) return 1;
+		if (b == 1) return a;
+		if (b < 0) return 1 / power(a, -b);
+
+		if ((b & 1) == 0) return power(a * a, b / 2);
+		else return a * power(a * a, b / 2);
+	}
+
+	public static Double unqoteNumber(String src) {
+		var i = 0;
+
+		double whole = 0;
+		double fract = 0;
+		long exponent = 0;
+		boolean parsedAny = false;
+		boolean negative = false;
+
+		if (src.charAt(i) == '-') {
+			negative = true;
+			i++;
+		}
+
+		while (i < src.length()) {
+			var c = src.charAt(i);
+			if (c < '0' || c > '9') break;
+
+			parsedAny = true;
+			whole *= 10;
+			whole += src.charAt(i++) - '0';
+		}
+
+		if (i < src.length() && src.charAt(i) == '.') {
+			parsedAny = true;
+			i++;
+
+			while (i < src.length()) {
+				var c = src.charAt(i);
+				if (c < '0' || c > '9') break;
+
+				parsedAny = true;
+				fract += src.charAt(i++) - '0';
+				fract /= 10;
+			}
+		}
+
+		if (i < src.length() && (src.charAt(i) == 'e' || src.charAt(i) == 'E')) {
+			i++;
+			parsedAny = true;
+			boolean expNegative = false;
+			boolean parsedE = false;
+
+			if (i < src.length()) {
+				if (src.charAt(i) == '-') {
+					expNegative = true;
+					i++;
+				}
+				else if (src.charAt(i) == '+') {
+					i++;
+				}
+			}
+
+
+			while (i < src.length()) {
+				var c = src.charAt(i);
+				if (c < '0' || c > '9') break;
+
+				parsedE = true;
+				exponent *= 10;
+
+				if (expNegative) exponent -= src.charAt(i) - '0';
+				else exponent += src.charAt(i) - '0';
+			}
+
+			if (!parsedE) return Double.NaN;
+		}
+
+		if (i != src.length()) return Double.NaN;
+
+		if (!parsedAny) {
+			if (negative) return Double.NaN;
+			return 0.;
+		}
+		else if (negative) return -(whole + fract) * power(10, exponent);
+		else return (whole + fract) * power(10, exponent);
+	}
+}
+

common/src/main/java/me/topchetoeu/j2s/common/SyntaxException.java

@@ -1,7 +1,5 @@
 package me.topchetoeu.j2s.common;
 
-import me.topchetoeu.j2s.common.parsing.Location;
-
 public class SyntaxException extends RuntimeException {
 	public final Location loc;
 	public final String msg;

common/src/main/resources/metadata

@@ -0,0 +1,3 @@
+version: ${version}
+name: ${name}
+author: TopchetoEU

common/src/test/java/me/topchetoeu/j2s/common/TestEnvironment.java

@@ -0,0 +1,69 @@
+package me.topchetoeu.j2s.common;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertInstanceOf;
+
+import org.junit.jupiter.api.Test;
+
+public class TestEnvironment {
+	private final Key<String> FOO = new Key<>();
+	private final Key<Void> MARKER = new Key<>();
+
+	@Test public void testShouldCreate() {
+		new Environment();
+		Environment.empty();
+	}
+	@Test public void testShouldNotExist() {
+		var env = new Environment();
+		assertEquals(null, env.get(FOO));
+		assertEquals(false, env.has(FOO));
+	}
+
+	@Test public void testShouldAdd() {
+		var env = new Environment();
+		env.add(FOO, "test");
+		assertEquals("test", env.get(FOO));
+	}
+
+	@Test public void testShouldGetFromParent() {
+		var parent = new Environment();
+		parent.add(FOO, "test");
+		var child = parent.child();
+		assertEquals("test", child.get(FOO));
+		assertEquals(true, child.has(FOO));
+	}
+	@Test public void testShouldHideParent() {
+		var parent = new Environment();
+		parent.add(FOO, "test");
+		var child = parent.child();
+		child.remove(FOO);
+		assertEquals(null, child.get(FOO));
+		assertEquals(false, child.has(FOO));
+	}
+
+	@Test public void testShouldAddMarker() {
+		var env = new Environment();
+		env.add(MARKER);
+		assertEquals(true, env.has(MARKER));
+		assertEquals(false, env.hasNotNull(MARKER));
+	}
+
+	@Test public void testShouldInitOnce() {
+		var env = new Environment();
+		assertEquals("a", env.init(FOO, "a"));
+		assertEquals("a", env.init(FOO, "b"));
+		assertEquals("a", env.get(FOO));
+	}
+	@Test public void testShouldInitOnceFrom() {
+		var env = new Environment();
+		assertEquals("a", env.initFrom(FOO, () -> "a"));
+		assertEquals("a", env.initFrom(FOO, () -> "b"));
+		assertEquals("a", env.get(FOO));
+	}
+
+	@Test public void testShouldWrap() {
+		var env = new Environment();
+		assertEquals(env, Environment.wrap(env));
+		assertInstanceOf(Environment.class, Environment.wrap(null));
+	}
+}

common/src/test/java/me/topchetoeu/j2s/common/TestFilename.java

@@ -0,0 +1,37 @@
+package me.topchetoeu.j2s.common;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class TestFilename {
+	@Test public void testShouldParseFilePath() {
+		var filename = Filename.parse("file://hello.world");
+		assertEquals("file", filename.protocol);
+		assertEquals("hello.world", filename.path);
+	}
+	@Test public void testShouldParseNoProtocolFilename() {
+		var filename = Filename.parse("hello.world");
+		assertEquals("file", filename.protocol);
+		assertEquals("hello.world", filename.path);
+	}
+	@Test public void testShouldParseAdditionalSlashFilename() {
+		var filename = Filename.parse("test:///hello.world");
+		assertEquals("test", filename.protocol);
+		assertEquals("/hello.world", filename.path);
+	}
+	@Test public void testShouldParseOneSlashFilename() {
+		var filename = Filename.parse("test:/hello.world");
+		assertEquals("file", filename.protocol);
+		assertEquals("test:/hello.world", filename.path);
+	}
+	@Test public void testShouldParseMatroshkaFilename() {
+		var a = Filename.parse("a://b://hello.world");
+		assertEquals("a", a.protocol);
+		assertEquals("b://hello.world", a.path);
+
+		var b = Filename.parse(a.path);
+		assertEquals("b", b.protocol);
+		assertEquals("hello.world", b.path);
+	}
+}

common/src/test/java/me/topchetoeu/j2s/common/TestLocation.java

@@ -0,0 +1,159 @@
+package me.topchetoeu.j2s.common;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class TestLocation {
+	@Test public void testShouldCreateLocation() {
+		var loc = Location.of(new Filename("file", "test.txt"), 10, 5);
+		assertEquals("test.txt", loc.filename().path);
+		assertEquals(10, loc.line());
+		assertEquals(5, loc.start());
+	}
+
+	@Test public void testShouldGetNextLineLocation() {
+		var loc = Location.of("test.txt:10:5");
+		var next = loc.nextLine();
+		assertEquals(new Filename("file", "test.txt"), next.filename());
+		assertEquals(10, next.line());
+		assertEquals(0, next.start());
+		assertEquals(new Filename("file", "test.txt"), loc.filename());
+		assertEquals(9, loc.line());
+		assertEquals(4, loc.start());
+	}
+	@Test public void testShouldGetNextNthLineLocation() {
+		var loc = Location.of(new Filename("file", "test.txt"), 10, 5);
+		var next = loc.nextLine(5);
+		assertEquals(15, next.line());
+		assertEquals(0, next.start());
+		assertEquals(10, loc.line());
+		assertEquals(5, loc.start());
+	}
+
+	@Test public void testShouldGetNextLocation() {
+		var loc = Location.of("test:10:5");
+		var next = loc.add(10);
+		assertEquals(new Filename("file", "test"), next.filename());
+		assertEquals(9, next.line());
+		assertEquals(14, next.start());
+		assertEquals(new Filename("file", "test"), loc.filename());
+		assertEquals(9, loc.line());
+		assertEquals(4, loc.start());
+	}
+
+	@Test public void testShouldParseLocation() {
+		var loc = Location.of("test.txt:10:5");
+		assertEquals(new Filename("file", "test.txt"), loc.filename());
+		assertEquals(9, loc.line());
+		assertEquals(4, loc.start());
+	}
+	@Test public void testShouldParseComplexFilenameLocation() {
+		var loc = Location.of("testificate://test.txt:10:5");
+		assertEquals(new Filename("testificate", "test.txt"), loc.filename());
+		assertEquals(9, loc.line());
+		assertEquals(4, loc.start());
+	}
+	@Test public void testShouldParseNoFilenameLocation() {
+		var loc = Location.of("10:5");
+		assertEquals(null, loc.filename());
+		assertEquals(9, loc.line());
+		assertEquals(4, loc.start());
+	}
+	@Test public void testShouldParseNoStartLocationA() {
+		var loc = Location.of("file://10:5");
+		assertEquals(new Filename("file", "10"), loc.filename());
+		assertEquals(4, loc.line());
+		assertEquals(-1, loc.start());
+	}
+	@Test public void testShouldParseNoStartLocationB() {
+		var loc = Location.of("file:5");
+		assertEquals(new Filename("file", "file"), loc.filename());
+		assertEquals(4, loc.line());
+		assertEquals(-1, loc.start());
+	}
+	@Test public void testShouldParseOnlyFilenameLocationA() {
+		var loc = Location.of("http://example.org/test.txt");
+		assertEquals(new Filename("http", "example.org/test.txt"), loc.filename());
+		assertEquals(-1, loc.line());
+		assertEquals(-1, loc.start());
+	}
+	@Test public void testShouldParseOnlyFilenameLocationB() {
+		var loc = Location.of("test.txt");
+		assertEquals(new Filename("file", "test.txt"), loc.filename());
+		assertEquals(-1, loc.line());
+		assertEquals(-1, loc.start());
+	}
+	@Test public void testShouldParseOnlyFilenameWithColonLocation() {
+		var loc = Location.of("my-file:bad-file");
+		assertEquals(new Filename("file", "my-file:bad-file"), loc.filename());
+		assertEquals(-1, loc.line());
+		assertEquals(-1, loc.start());
+	}
+	@Test public void testShouldParseOnlyFilenameWithTripleColonLocation() {
+		var loc = Location.of("a:my-file:bad-file");
+		assertEquals(new Filename("file", "a:my-file:bad-file"), loc.filename());
+		assertEquals(-1, loc.line());
+		assertEquals(-1, loc.start());
+	}
+
+	@Test public void testCompareEqualLoc() {
+		var locA = Location.of("test:10:5");
+		var locB = Location.of("test:10:5");
+
+		assertEquals(0, locA.compareTo(locB));
+		assertEquals(0, locB.compareTo(locA));
+	}
+	@Test public void testCompareNoFileLoc() {
+		var locA = Location.of("10:5");
+		var locB = Location.of("11:5");
+
+		assertEquals(-1, locA.compareTo(locB));
+		assertEquals(1, locB.compareTo(locA));
+	}
+	@Test public void testCompareOneNoFileLoc() {
+		var locA = Location.of("10:5");
+		var locB = Location.of("test:10:5");
+
+		assertEquals(-1, locA.compareTo(locB));
+		assertEquals(1, locB.compareTo(locA));
+	}
+	@Test public void testCompareDiffFileLoc() {
+		var locA = Location.of("a:10:5");
+		var locB = Location.of("b:10:5");
+
+		assertEquals(-1, locA.compareTo(locB));
+		assertEquals(1, locB.compareTo(locA));
+	}
+	@Test public void testCompareDiffLineLoc() {
+		var locA = Location.of("test:10:5");
+		var locB = Location.of("test:11:5");
+
+		assertEquals(-1, locA.compareTo(locB));
+		assertEquals(1, locB.compareTo(locA));
+	}
+	@Test public void testCompareDiffStartLoc() {
+		var locA = Location.of("test:10:5");
+		var locB = Location.of("test:10:10");
+
+		assertEquals(-1, locA.compareTo(locB));
+		assertEquals(1, locB.compareTo(locA));
+	}
+
+	@Test public void testToStringAll() {
+		var locA = Location.of("test:10:5");
+		assertEquals("file://test:10:5", locA.toString());
+	}
+	@Test public void testToStringNoFilename() {
+		var locA = Location.of("10:5");
+		assertEquals("10:5", locA.toString());
+	}
+	@Test public void testToStringNoStart() {
+		var locA = Location.of("file:5");
+		assertEquals("file://file:5", locA.toString());
+	}
+	@Test public void testToStringNoLoc() {
+		var locA = Location.of("file");
+		assertEquals("file://file", locA.toString());
+	}
+}

compilation/build.gradle.kts

@@ -0,0 +1,13 @@
+plugins {
+	id("common-java");
+}
+
+description = "A compiler of EcmaScript 5 code to J2S bytecode";
+
+tasks.test {
+	useJUnitPlatform();
+}
+
+dependencies {
+	implementation(project(":common"));
+}

compilation/src/main/java/me/topchetoeu/j2s/compilation/CompilationFunctionMap.java

@@ -1,4 +1,4 @@
-package me.topchetoeu.j2s.common.mapping;
+package me.topchetoeu.j2s.compilation;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -13,12 +13,14 @@ import java.util.function.Function;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
+import me.topchetoeu.j2s.common.Filename;
+import me.topchetoeu.j2s.common.FunctionMap;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Filename;
-import me.topchetoeu.j2s.common.parsing.Location;
 
-public class FunctionMap {
+public final class CompilationFunctionMap implements FunctionMap {
 	public static class FunctionMapBuilder {
+		private Location first, last;
 		private final TreeMap<Integer, Location> sourceMap = new TreeMap<>();
 		private final HashMap<Location, BreakpointType> breakpoints = new HashMap<>();
 
@@ -33,6 +35,9 @@ public class FunctionMap {
 		}
 		public FunctionMapBuilder setLocation(int i, Location loc) {
 			if (loc == null || i < 0) return this;
+			if (first == null || first.compareTo(loc) > 0) first = loc;
+			if (last == null || last.compareTo(loc) < 0) last = loc;
+
 			sourceMap.put(i, loc);
 			return this;
 		}
@@ -43,12 +48,10 @@ public class FunctionMap {
 		}
 
 		public Location first() {
-			if (sourceMap.size() == 0) return null;
-			return sourceMap.firstEntry().getValue();
+			return first;
 		}
 		public Location last() {
-			if (sourceMap.size() == 0) return null;
-			return sourceMap.lastEntry().getValue();
+			return last;
 		}
 
 		public FunctionMapBuilder map(Function<Location, Location> mapper) {
@@ -75,17 +78,17 @@ public class FunctionMap {
 			return this;
 		}
 
-		public FunctionMap build(String[] localNames, String[] capturableNames, String[] captureNames) {
-			return new FunctionMap(sourceMap, breakpoints, localNames, capturableNames, captureNames);
+		public CompilationFunctionMap build(String[] localNames, String[] capturableNames, String[] captureNames) {
+			return new CompilationFunctionMap(sourceMap, breakpoints, first, last, localNames, capturableNames, captureNames);
 		}
-		public FunctionMap build(Function<Location, Location> mapper) {
-			return new FunctionMap(sourceMap, breakpoints, new String[0], new String[0], new String[0]);
+		public CompilationFunctionMap build() {
+			return new CompilationFunctionMap(sourceMap, breakpoints, first, last, new String[0], new String[0], new String[0]);
 		}
 
 		private FunctionMapBuilder() { }
 	}
 
-	public static final FunctionMap EMPTY = new FunctionMap();
+	public static final CompilationFunctionMap EMPTY = new CompilationFunctionMap();
 
 	private final HashMap<Integer, BreakpointType> bps = new HashMap<>();
 	private final HashMap<Filename, TreeSet<Location>> bpLocs = new HashMap<>();
@@ -93,28 +96,29 @@ public class FunctionMap {
 	private final TreeMap<Integer, Location> pcToLoc = new TreeMap<>();
 
 	public final String[] localNames, capturableNames, captureNames;
+	public final Location first, last;
 
-	public Location toLocation(int pc, boolean approxiamte) {
+	@Override public Location toLocation(int pc, boolean approximate) {
 		if (pcToLoc.size() == 0 || pc < 0 || pc > pcToLoc.lastKey()) return null;
 		var res = pcToLoc.get(pc);
-		if (!approxiamte || res != null) return res;
+		if (!approximate || res != null) return res;
 		var entry = pcToLoc.headMap(pc, true).lastEntry();
 		if (entry == null) return null;
 		else return entry.getValue();
 	}
-	public Location toLocation(int pc) {
+	@Override public Location toLocation(int pc) {
 		return toLocation(pc, false);
 	}
 
-	public BreakpointType getBreakpoint(int pc) {
+	@Override public BreakpointType getBreakpoint(int pc) {
 		return bps.getOrDefault(pc, BreakpointType.NONE);
 	}
-	public Location correctBreakpoint(Location loc) {
+	@Override public Location correctBreakpoint(Location loc) {
 		var set = bpLocs.get(loc.filename());
 		if (set == null) return null;
 		else return set.ceiling(loc);
 	}
-	public List<Location> correctBreakpoint(Pattern filename, int line, int column) {
+	@Override public List<Location> correctBreakpoint(Pattern filename, int line, int column) {
 		var candidates = new HashMap<Filename, TreeSet<Location>>();
 
 		for (var name : bpLocs.keySet()) {
@@ -132,7 +136,7 @@ public class FunctionMap {
 
 		return res;
 	}
-	public List<Location> breakpoints(Location start, Location end) {
+	@Override public List<Location> breakpoints(Location start, Location end) {
 		if (!Objects.equals(start.filename(), end.filename())) return Arrays.asList();
 		NavigableSet<Location> set = bpLocs.get(start.filename());
 		if (set == null) return Arrays.asList();
@@ -152,8 +156,25 @@ public class FunctionMap {
 		return pcToLoc.lastEntry().getValue();
 	}
 
-	public FunctionMap clone() {
-		var res = new FunctionMap(new HashMap<>(), new HashMap<>(), localNames, capturableNames, captureNames);
+	@Override public Location first() {
+		return first;
+	}
+	@Override public Location last() {
+		return last;
+	}
+
+	@Override public String[] capturableNames() {
+		return capturableNames;
+	}
+	@Override public String[] captureNames() {
+		return captureNames;
+	}
+	@Override public String[] localNames() {
+		return localNames;
+	}
+
+	public CompilationFunctionMap clone() {
+		var res = new CompilationFunctionMap(new HashMap<>(), new HashMap<>(), first, last, localNames, capturableNames, captureNames);
 		res.pcToLoc.putAll(this.pcToLoc);
 		res.bps.putAll(bps);
 		res.bpLocs.putAll(bpLocs);
@@ -161,7 +182,7 @@ public class FunctionMap {
 		return res;
 	}
 
-	public FunctionMap(Map<Integer, Location> map, Map<Location, BreakpointType> breakpoints, String[] localNames, String[] capturableNames, String[] captureNames) {
+	public CompilationFunctionMap(Map<Integer, Location> map, Map<Location, BreakpointType> breakpoints, Location first, Location last, String[] localNames, String[] capturableNames, String[] captureNames) {
 		var locToPc = new HashMap<Location, Integer>();
 
 		for (var el : map.entrySet()) {
@@ -180,11 +201,16 @@ public class FunctionMap {
 		this.localNames = localNames;
 		this.captureNames = captureNames;
 		this.capturableNames = capturableNames;
+
+		this.first = first;
+		this.last = last;
 	}
-	private FunctionMap() {
+	private CompilationFunctionMap() {
 		localNames = new String[0];
 		captureNames = new String[0];
 		capturableNames = new String[0];
+		first = null;
+		last = null;
 	}
 
 	public static FunctionMapBuilder builder() {

compilation/src/main/java/me/topchetoeu/j2s/compilation/CompileResult.java

@@ -2,27 +2,29 @@ package me.topchetoeu.j2s.compilation;
 
 import java.util.List;
 import java.util.Map;
+import java.util.Stack;
 import java.util.function.Function;
 
+import me.topchetoeu.j2s.common.Environment;
 import me.topchetoeu.j2s.common.FunctionBody;
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Key;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.environment.Environment;
-import me.topchetoeu.j2s.common.environment.Key;
-import me.topchetoeu.j2s.common.mapping.FunctionMap;
-import me.topchetoeu.j2s.common.mapping.FunctionMap.FunctionMapBuilder;
-import me.topchetoeu.j2s.common.parsing.Location;
+import me.topchetoeu.j2s.compilation.CompilationFunctionMap.FunctionMapBuilder;
 import me.topchetoeu.j2s.compilation.control.TryNode;
 import me.topchetoeu.j2s.compilation.scope.FunctionScope;
 import me.topchetoeu.j2s.compilation.scope.Variable;
 
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.Iterator;
 import java.util.LinkedList;
 
 public final class CompileResult {
 	public static final Key<Void> DEBUG_LOG = new Key<>();
 
+	private FunctionBody body;
 	public final List<Instruction> instructions;
 	public final List<CompileResult> children;
 	public final Map<FunctionNode, CompileResult> childrenMap = new HashMap<>();
@@ -64,10 +66,32 @@ public final class CompileResult {
 	public void setLocation(Location type) {
 		setLocation(instructions.size() - 1, type);
 	}
+
 	public void setLocationAndDebug(Location loc, BreakpointType type) {
 		setLocationAndDebug(instructions.size() - 1, loc, type);
 	}
 	
+	public Iterable<CompileResult> all() {
+		var stack = new Stack<CompileResult>();
+		stack.push(this);
+
+		return () -> new Iterator<CompileResult>() {
+			@Override public CompileResult next() {
+				if (stack.empty()) return null;
+				else {
+					var res = stack.pop();
+					for (var child : res.children) {
+						stack.push(child);
+					}
+					return res;
+				}
+			}
+			@Override public boolean hasNext() {
+				return !stack.empty();
+			}
+		};
+	}
+
 	public CompileResult addChild(FunctionNode node, CompileResult res) {
 		this.children.add(res);
 		this.childrenMap.put(node, res);
@@ -79,13 +103,15 @@ public final class CompileResult {
 		return instructions.toArray(new Instruction[0]);
 	}
 
-	public FunctionMap map(Function<Location, Location> mapper) {
+	public CompilationFunctionMap map(Function<Location, Location> mapper) {
 		return map.map(mapper).build(scope.localNames(), scope.capturableNames(), scope.captureNames());
 	}
-	public FunctionMap map() {
+	public CompilationFunctionMap map() {
 		return map.build(scope.localNames(), scope.capturableNames(), scope.captureNames());
 	}
 	public FunctionBody body() {
+		if (body != null) return body;
+
 		var builtChildren = new FunctionBody[children.size()];
 		for (var i = 0; i < children.size(); i++) builtChildren[i] = children.get(i).body();
 
@@ -100,7 +126,7 @@ public final class CompileResult {
 			for (var instr : instrRes) System.out.println(instr);
 		}
 
-		return new FunctionBody(
+		return body = new FunctionBody(
 			scope.localsCount(), scope.capturablesCount(), scope.capturesCount(),
 			length, instrRes, builtChildren
 		);
@@ -128,7 +154,7 @@ public final class CompileResult {
 		this.scope = scope;
 		this.instructions = new ArrayList<>();
 		this.children = new LinkedList<>();
-		this.map = FunctionMap.builder();
+		this.map = CompilationFunctionMap.builder();
 		this.env = env;
 		this.length = length;
 	}

compilation/src/main/java/me/topchetoeu/j2s/compilation/CompoundNode.java

@@ -5,11 +5,11 @@ import java.util.Arrays;
 import java.util.List;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 
 public class CompoundNode extends Node {

compilation/src/main/java/me/topchetoeu/j2s/compilation/FunctionNode.java

@@ -2,13 +2,13 @@ package me.topchetoeu.j2s.compilation;
 
 import java.util.List;
 
+import me.topchetoeu.j2s.common.Environment;
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.environment.Environment;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.scope.FunctionScope;
 import me.topchetoeu.j2s.compilation.values.VariableNode;
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/FunctionStatementNode.java

@@ -3,8 +3,8 @@ package me.topchetoeu.j2s.compilation;
 import java.util.List;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
 import me.topchetoeu.j2s.compilation.scope.Variable;
 import me.topchetoeu.j2s.compilation.values.VariableNode;
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/FunctionValueNode.java

@@ -3,8 +3,8 @@ package me.topchetoeu.j2s.compilation;
 import java.util.List;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
 import me.topchetoeu.j2s.compilation.values.VariableNode;
 
 public class FunctionValueNode extends FunctionNode {

compilation/src/main/java/me/topchetoeu/j2s/compilation/JavaScript.java

@@ -6,13 +6,10 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
+import me.topchetoeu.j2s.common.Environment;
+import me.topchetoeu.j2s.common.Filename;
+import me.topchetoeu.j2s.common.Key;
 import me.topchetoeu.j2s.common.SyntaxException;
-import me.topchetoeu.j2s.common.environment.Environment;
-import me.topchetoeu.j2s.common.environment.Key;
-import me.topchetoeu.j2s.common.parsing.Filename;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.control.BreakNode;
 import me.topchetoeu.j2s.compilation.control.ContinueNode;
 import me.topchetoeu.j2s.compilation.control.DebugNode;
@@ -26,6 +23,9 @@ import me.topchetoeu.j2s.compilation.control.SwitchNode;
 import me.topchetoeu.j2s.compilation.control.ThrowNode;
 import me.topchetoeu.j2s.compilation.control.TryNode;
 import me.topchetoeu.j2s.compilation.control.WhileNode;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.scope.FunctionScope;
 import me.topchetoeu.j2s.compilation.values.ArgumentsNode;
 import me.topchetoeu.j2s.compilation.values.ArrayNode;

compilation/src/main/java/me/topchetoeu/j2s/compilation/LabelContext.java

@@ -5,11 +5,11 @@ import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.function.IntSupplier;
 
+import me.topchetoeu.j2s.common.Environment;
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Key;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.SyntaxException;
-import me.topchetoeu.j2s.common.environment.Environment;
-import me.topchetoeu.j2s.common.environment.Key;
-import me.topchetoeu.j2s.common.parsing.Location;
 
 public class LabelContext {
 	public static final Key<LabelContext> BREAK_CTX = new Key<>();

compilation/src/main/java/me/topchetoeu/j2s/compilation/Node.java

@@ -1,7 +1,7 @@
 package me.topchetoeu.j2s.compilation;
 
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
 
 public abstract class Node {
 	private Location loc;

compilation/src/main/java/me/topchetoeu/j2s/compilation/Parameter.java

@@ -1,6 +1,6 @@
 package me.topchetoeu.j2s.compilation;
 
-import me.topchetoeu.j2s.common.parsing.Location;
+import me.topchetoeu.j2s.common.Location;
 
 public final class Parameter {
 	public final Location loc;

compilation/src/main/java/me/topchetoeu/j2s/compilation/VariableDeclareNode.java

@@ -6,10 +6,10 @@ import java.util.List;
 import com.github.bsideup.jabel.Desugar;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.values.VariableNode;
 
 public class VariableDeclareNode extends Node {

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/BreakNode.java

@@ -1,15 +1,15 @@
 package me.topchetoeu.j2s.compilation.control;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.SyntaxException;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.LabelContext;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class BreakNode extends Node {
 	public final String label;

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/ContinueNode.java

@@ -1,15 +1,15 @@
 package me.topchetoeu.j2s.compilation.control;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.SyntaxException;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.LabelContext;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class ContinueNode extends Node {
 	public final String label;

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/DebugNode.java

@@ -1,13 +1,13 @@
 package me.topchetoeu.j2s.compilation.control;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class DebugNode extends Node {
 	@Override public void compileFunctions(CompileResult target) {

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/DeleteNode.java

@@ -1,13 +1,13 @@
 package me.topchetoeu.j2s.compilation.control;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.values.VariableNode;
 import me.topchetoeu.j2s.compilation.values.constants.BoolNode;
 import me.topchetoeu.j2s.compilation.values.operations.IndexNode;

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/DoWhileNode.java

@@ -1,16 +1,16 @@
 package me.topchetoeu.j2s.compilation.control;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.DeferredIntSupplier;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.LabelContext;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class DoWhileNode extends Node {
 	public final Node condition, body;

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/ForInNode.java

@@ -1,16 +1,16 @@
 package me.topchetoeu.j2s.compilation.control;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.DeferredIntSupplier;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.LabelContext;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.values.VariableNode;
 
 public class ForInNode extends Node {
@@ -31,13 +31,18 @@ public class ForInNode extends Node {
 		body.compileFunctions(target);
 	}
 	@Override public void compile(CompileResult target, boolean pollute) {
+		target.add(Instruction.loadIntrinsics("keys"));
 		object.compile(target, true, BreakpointType.STEP_OVER);
-		target.add(Instruction.keys(false, true));
+		target.add(Instruction.pushValue(false));
+		target.add(Instruction.pushValue(true));
+		target.add(Instruction.call(3, false));
 
 		int start = target.size();
 		target.add(Instruction.dup());
+		target.add(Instruction.call(0, false));
+		target.add(Instruction.dup());
+		target.add(Instruction.loadMember("done"));
 		int mid = target.temp();
-
 		target.add(Instruction.loadMember("value")).setLocation(binding.loc());
 		target.add(VariableNode.toSet(target, loc(), binding.name, false, true)).setLocation(binding.loc());
 
@@ -52,11 +57,12 @@ public class ForInNode extends Node {
 
 		target.add(Instruction.jmp(start - endI));
 		target.add(Instruction.discard());
-		target.set(mid, Instruction.jmpIfNot(endI - mid + 1));
+		target.set(mid, Instruction.jmpIf(endI - mid + 1));
 
 		end.set(endI + 1);
 		LabelContext.popLoop(target.env, label);
 
+		target.add(Instruction.discard());
 		if (pollute) target.add(Instruction.pushUndefined());
 	}
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/ForNode.java

@@ -1,17 +1,17 @@
 package me.topchetoeu.j2s.compilation.control;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.DeferredIntSupplier;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.LabelContext;
 import me.topchetoeu.j2s.compilation.Node;
 import me.topchetoeu.j2s.compilation.VariableDeclareNode;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class ForNode extends Node {
 	public final Node declaration, assignment, condition, body;

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/IfNode.java

@@ -1,16 +1,16 @@
 package me.topchetoeu.j2s.compilation.control;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.DeferredIntSupplier;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.LabelContext;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class IfNode extends Node {
 	public final Node condition, body, elseBody;

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/ReturnNode.java

@@ -1,13 +1,13 @@
 package me.topchetoeu.j2s.compilation.control;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class ReturnNode extends Node {
 	public final Node value;

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/SwitchNode.java

@@ -4,17 +4,17 @@ import java.util.ArrayList;
 import java.util.HashMap;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Operation;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.DeferredIntSupplier;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.LabelContext;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class SwitchNode extends Node {
 	public static class SwitchCase {

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/ThrowNode.java

@@ -1,13 +1,13 @@
 package me.topchetoeu.j2s.compilation.control;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class ThrowNode extends Node {
 	public final Node value;

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/TryNode.java

@@ -1,17 +1,17 @@
 package me.topchetoeu.j2s.compilation.control;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.CompoundNode;
 import me.topchetoeu.j2s.compilation.DeferredIntSupplier;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.LabelContext;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class TryNode extends Node {
 	public final CompoundNode tryBody;

compilation/src/main/java/me/topchetoeu/j2s/compilation/control/WhileNode.java

@@ -1,16 +1,16 @@
 package me.topchetoeu.j2s.compilation.control;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.DeferredIntSupplier;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.LabelContext;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class WhileNode extends Node {
 	public final Node condition, body;

compilation/src/main/java/me/topchetoeu/j2s/compilation/json/JSON.java

@@ -1,16 +1,16 @@
-package me.topchetoeu.j2s.common.json;
+package me.topchetoeu.j2s.compilation.json;
 
-import java.math.BigDecimal;
 import java.util.HashMap;
 import java.util.stream.Collectors;
 
+import me.topchetoeu.j2s.common.Filename;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Metadata;
+import me.topchetoeu.j2s.common.StringifyUtils;
 import me.topchetoeu.j2s.common.SyntaxException;
-import me.topchetoeu.j2s.common.parsing.Filename;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class JSON {
 	public static ParseRes<JSONElement> parseString(Source src, int i) {
@@ -110,37 +110,10 @@ public class JSON {
 	}
 
 	public static String stringify(JSONElement el) {
-		if (el.isNumber()) {
-			var d = el.number();
-			if (d == Double.NEGATIVE_INFINITY) return "-Infinity";
-			if (d == Double.POSITIVE_INFINITY) return "Infinity";
-			if (Double.isNaN(d)) return "NaN";
-			return BigDecimal.valueOf(d).stripTrailingZeros().toPlainString();
-		}
+		if (el.isNumber()) return StringifyUtils.quoteNumber(el.number());
+		if (el.isString()) return StringifyUtils.quoteString(el.string());
 		if (el.isBoolean()) return el.bool() ? "true" : "false";
 		if (el.isNull()) return "null";
-		if (el.isString()) {
-			var res = new StringBuilder("\"");
-			var alphabet = "0123456789ABCDEF".toCharArray();
-
-			for (var c : el.string().toCharArray()) {
-				if (c < 32 || c >= 127) {
-					res
-						.append("\\u")
-						.append(alphabet[(c >> 12) & 0xF])
-						.append(alphabet[(c >> 8) & 0xF])
-						.append(alphabet[(c >> 4) & 0xF])
-						.append(alphabet[(c >> 0) & 0xF]);
-				}
-				else if (c == '\\')
-					res.append("\\\\");
-				else if (c == '"')
-					res.append("\\\"");
-				else res.append(c);
-			}
-
-			return res.append('"').toString();
-		}
 		if (el.isList()) {
 			var res = new StringBuilder().append("[");
 			for (int i = 0; i < el.list().size(); i++) {
@@ -156,7 +129,7 @@ public class JSON {
 
 			for (int i = 0; i < entries.size(); i++) {
 				if (i != 0) res.append(",");
-				res.append(stringify(JSONElement.string(entries.get(i).getKey())));
+				res.append(StringifyUtils.quoteString(entries.get(i).getKey()));
 				res.append(":");
 				res.append(stringify(entries.get(i).getValue()));
 			}

compilation/src/main/java/me/topchetoeu/j2s/compilation/json/JSONElement.java

@@ -1,4 +1,4 @@
-package me.topchetoeu.j2s.common.json;
+package me.topchetoeu.j2s.compilation.json;
 
 public class JSONElement {
 	public static enum Type {

compilation/src/main/java/me/topchetoeu/j2s/compilation/json/JSONList.java

@@ -1,4 +1,4 @@
-package me.topchetoeu.j2s.common.json;
+package me.topchetoeu.j2s.compilation.json;
 
 import java.util.ArrayList;
 import java.util.Arrays;

compilation/src/main/java/me/topchetoeu/j2s/compilation/json/JSONMap.java

@@ -1,4 +1,4 @@
-package me.topchetoeu.j2s.common.json;
+package me.topchetoeu.j2s.compilation.json;
 
 import java.util.Collection;
 import java.util.HashMap;

compilation/src/main/java/me/topchetoeu/j2s/compilation/members/FieldMemberNode.java

@@ -1,13 +1,13 @@
 package me.topchetoeu.j2s.compilation.members;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.values.ObjectNode;
 
 public class FieldMemberNode implements Member {

compilation/src/main/java/me/topchetoeu/j2s/compilation/members/Member.java

@@ -1,6 +1,6 @@
 package me.topchetoeu.j2s.compilation.members;
 
-import me.topchetoeu.j2s.common.parsing.Location;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 
 public interface Member {

compilation/src/main/java/me/topchetoeu/j2s/compilation/members/PropertyMemberNode.java

@@ -3,16 +3,16 @@ package me.topchetoeu.j2s.compilation.members;
 import java.util.Arrays;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.CompoundNode;
 import me.topchetoeu.j2s.compilation.FunctionNode;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.values.ObjectNode;
 import me.topchetoeu.j2s.compilation.values.VariableNode;
 import me.topchetoeu.j2s.compilation.values.constants.StringNode;
@@ -38,11 +38,20 @@ public final class PropertyMemberNode extends FunctionNode implements Member {
 	}
 
 	@Override public void compile(CompileResult target, boolean pollute, String name, BreakpointType bp) {
-		if (pollute) target.add(Instruction.dup());
-		key.compile(target, true);
+		if (isGetter()) {
+			target.add(Instruction.loadIntrinsics("defGetter"));
+		}
+		else {
+			target.add(Instruction.loadIntrinsics("defSetter"));
+		}
 
+		target.add(Instruction.dup(1, 1));
+		key.compile(target, true);
 		target.add(Instruction.loadFunc(target.childrenIndices.get(this), name(name), captures(target))).setLocation(loc());
-		target.add(Instruction.defProp(isSetter()));
+		target.add(Instruction.call(3, false));
+		target.add(Instruction.discard());
+
+		if (!pollute) target.add(Instruction.discard());
 	}
 
 	public PropertyMemberNode(Location loc, Location end, Node key, VariableNode argument, CompoundNode body) {

compilation/src/main/java/me/topchetoeu/j2s/compilation/parsing/ParseRes.java

@@ -1,4 +1,6 @@
-package me.topchetoeu.j2s.common.parsing;
+package me.topchetoeu.j2s.compilation.parsing;
+
+import me.topchetoeu.j2s.common.Location;
 
 public class ParseRes<T> {
 	public static enum State {
@@ -33,19 +35,20 @@ public class ParseRes<T> {
 		if (!state.isSuccess()) return this;
 		return new ParseRes<>(state, null, null, result, this.n + n);
 	}
+	@SuppressWarnings("unchecked")
 	public <T2> ParseRes<T2> chainError() {
 		if (isSuccess()) throw new RuntimeException("Can't transform a ParseRes that hasn't failed");
-		return new ParseRes<>(state, errorLocation, error, null, 0);
+		return (ParseRes<T2>)this;
 	}
 	@SuppressWarnings("unchecked")
 	public <T2> ParseRes<T2> chainError(ParseRes<?> other) {
-		if (!this.isError()) return other.chainError();
-		return (ParseRes<T2>) this;
+		if (this.isError()) return other.chainError();
+		return (ParseRes<T2>)this;
 	}
 	@SuppressWarnings("unchecked")
 	public <T2> ParseRes<T2> chainError(Location loc, String error) {
 		if (!this.isError()) return new ParseRes<>(State.ERROR, loc, error, null, 0);
-		return (ParseRes<T2>) this;
+		return (ParseRes<T2>)this;
 	}
 
 	public boolean isSuccess() { return state.isSuccess(); }
@@ -63,7 +66,6 @@ public class ParseRes<T> {
 		return new ParseRes<>(State.SUCCESS, null, null, val, i);
 	}
 
-	@SafeVarargs
 	@SuppressWarnings("all")
 	public static <T> ParseRes<T> first(Source src, int i, Parser ...parsers) {
 		int n = Parsing.skipEmpty(src, i);

compilation/src/main/java/me/topchetoeu/j2s/compilation/parsing/Parser.java

@@ -1,4 +1,4 @@
-package me.topchetoeu.j2s.common.parsing;
+package me.topchetoeu.j2s.compilation.parsing;
 
 public interface Parser<T> {
 	public ParseRes<T> parse(Source src, int i);

compilation/src/main/java/me/topchetoeu/j2s/compilation/parsing/Parsing.java

@@ -1,7 +1,4 @@
-package me.topchetoeu.j2s.common.parsing;
-
-import me.topchetoeu.j2s.common.SyntaxException;
-import me.topchetoeu.j2s.compilation.values.constants.NumberNode;
+package me.topchetoeu.j2s.compilation.parsing;
 
 public class Parsing {
 	public static boolean isDigit(Character c) {
@@ -19,14 +16,13 @@ public class Parsing {
 	}
 
 	public static int skipEmpty(Source src, int i) {
-		return skipEmpty(src, i, true);
-	}
-
-	public static int skipEmpty(Source src, int i, boolean noComments) {
 		int n = 0;
 
 		if (i == 0 && src.is(0, "#!")) {
-			while (!src.is(n, '\n')) n++;
+			while (!src.is(n, '\n')) {
+				if (n >= src.size()) return src.size();
+				n++;
+			}
 			n++;
 		}
 
@@ -89,7 +85,7 @@ public class Parsing {
 					if (i + n >= src.size()) return ParseRes.error(src.loc(i), "Invalid hexadecimal escape sequence");
 
 					int val = fromHex(src.at(i + n));
-					if (val == -1) throw new SyntaxException(src.loc(i + n), "Invalid hexadecimal escape sequence");
+					if (val == -1) return ParseRes.error(src.loc(i + n), "Invalid hexadecimal escape sequence");
 					n++;
 
 					newC = (newC << 4) | val;
@@ -104,7 +100,7 @@ public class Parsing {
 					if (i + n >= src.size()) return ParseRes.error(src.loc(i), "Invalid Unicode escape sequence");
 
 					int val = fromHex(src.at(i + n));
-					if (val == -1) throw new SyntaxException(src.loc(i + n), "Invalid Unicode escape sequence");
+					if (val == -1) return ParseRes.error(src.loc(i + n), "Invalid Unicode escape sequence");
 					n++;
 
 					newC = (newC << 4) | val;
@@ -346,8 +342,8 @@ public class Parsing {
 			if (negative) return ParseRes.error(src.loc(i + n), "Expected number immediatly after minus");
 			return ParseRes.failed();
 		}
-		else if (negative) return ParseRes.res(-(whole + fract) * NumberNode.power(10, exponent), n);
-		else return ParseRes.res((whole + fract) * NumberNode.power(10, exponent), n);
+		else if (negative) return ParseRes.res(-(whole + fract) * power(10, exponent), n);
+		else return ParseRes.res((whole + fract) * power(10, exponent), n);
 	}
 	public static ParseRes<Double> parseFloat(Source src, int i, boolean withMinus) {
 		var n = skipEmpty(src, i);
@@ -406,9 +402,10 @@ public class Parsing {
 			if (negative) return ParseRes.error(src.loc(i + n), "Expected number immediatly after minus");
 			return ParseRes.failed();
 		}
-		else if (negative) return ParseRes.res(-(whole + fract) * NumberNode.power(10, exponent), n);
-		else return ParseRes.res((whole + fract) * NumberNode.power(10, exponent), n);
+		else if (negative) return ParseRes.res(-(whole + fract) * power(10, exponent), n);
+		else return ParseRes.res((whole + fract) * power(10, exponent), n);
 	}
+
 	public static ParseRes<Double> parseInt(Source src, int i, String alphabet, boolean withMinus) {
 		var n = skipEmpty(src, i);
 
@@ -425,16 +422,20 @@ public class Parsing {
 			n += 2;
 
 			var res = parseHex(src, i);
-			if (!res.isSuccess()) return res.chainError(src.loc(i + n), "Incomplete hexadecimal literal");
+			if (!res.isSuccess())
+				return res.chainError(src.loc(i + n), "Incomplete hexadecimal literal");
 			n += res.n;
 
-			if (negative) return ParseRes.res(-res.result, n);
-			else return ParseRes.res(res.result, n);
+			if (negative)
+				return ParseRes.res(-res.result, n);
+			else
+				return ParseRes.res(res.result, n);
 		}
 
 		while (true) {
 			var digit = alphabet.indexOf(Character.toLowerCase(src.at(i + n, '\0')));
-			if (digit < 0) break;
+			if (digit < 0)
+				break;
 
 			parsedAny = true;
 			result *= alphabet.length();
@@ -443,10 +444,21 @@ public class Parsing {
 		}
 
 		if (!parsedAny) {
-			if (negative) return ParseRes.error(src.loc(i + n), "Expected number immediatly after minus");
+			if (negative)
+				return ParseRes.error(src.loc(i + n), "Expected number immediatly after minus");
 			return ParseRes.failed();
+		} else if (negative)
+			return ParseRes.res(-result, n);
+		else
+			return ParseRes.res(result, n);
 	}
-		else if (negative) return ParseRes.res(-result, n);
-		else return ParseRes.res(result, n);
+
+	private static double power(double a, long b) {
+		if (b == 0) return 1;
+		if (b == 1) return a;
+		if (b < 0) return 1 / power(a, -b);
+
+		if ((b & 1) == 0) return power(a * a, b / 2);
+		else return a * power(a * a, b / 2);
 	}
 }

compilation/src/main/java/me/topchetoeu/j2s/compilation/parsing/Source.java

@@ -1,8 +1,10 @@
-package me.topchetoeu.j2s.common.parsing;
+package me.topchetoeu.j2s.compilation.parsing;
 
 import java.util.function.Predicate;
 
-import me.topchetoeu.j2s.common.environment.Environment;
+import me.topchetoeu.j2s.common.Environment;
+import me.topchetoeu.j2s.common.Filename;
+import me.topchetoeu.j2s.common.Location;
 
 public class Source {
 	public final Environment env;
@@ -12,6 +14,8 @@ public class Source {
 	private int[] lineStarts;
 
 	public Location loc(int offset) {
+		if (offset < 0) offset = 0;
+		if (offset > src.length()) offset = src.length();
 		return new SourceLocation(filename, lineStarts, offset);
 	}
 	public boolean is(int i, char c) {

compilation/src/main/java/me/topchetoeu/j2s/compilation/parsing/SourceLocation.java

@@ -1,7 +1,10 @@
-package me.topchetoeu.j2s.common.parsing;
+package me.topchetoeu.j2s.compilation.parsing;
 
 import java.util.Objects;
 
+import me.topchetoeu.j2s.common.Filename;
+import me.topchetoeu.j2s.common.Location;
+
 public class SourceLocation extends Location {
 	private int[] lineStarts;
 	private int line;

compilation/src/main/java/me/topchetoeu/j2s/compilation/patterns/AssignTarget.java

@@ -1,6 +1,6 @@
 package me.topchetoeu.j2s.compilation.patterns;
 
-import me.topchetoeu.j2s.common.parsing.Location;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 
 /**

compilation/src/main/java/me/topchetoeu/j2s/compilation/scope/FunctionScope.java

@@ -32,7 +32,7 @@ public final class FunctionScope {
 	}
 
 	/**
-	 * @returns If a variable with the same name exists, the old variable. Otherwise, the given variable
+	 * @return If a variable with the same name exists, the old variable. Otherwise, the given variable
 	 */
 	public Variable define(Variable var) {
 		if (passthrough) return null;
@@ -48,7 +48,7 @@ public final class FunctionScope {
 	}
 
 	/**
-	 * @returns A variable with the given name, or null if a global variable
+	 * @return A variable with the given name, or null if a global variable
 	 */
 	public Variable define(String name) {
 		return define(new Variable(name, false));

compilation/src/main/java/me/topchetoeu/j2s/compilation/scope/VariableIndex.java

@@ -39,9 +39,9 @@ public final class VariableIndex {
 	}
 	public final Instruction toSet(boolean keep) {
 		switch (type) {
-			case CAPTURES: return Instruction.storeVar(~index, keep, false);
-			case CAPTURABLES: return Instruction.storeVar(index, keep, false);
-			case LOCALS: return Instruction.storeVar(index, keep, false);
+			case CAPTURES: return Instruction.storeVar(~index, keep);
+			case CAPTURABLES: return Instruction.storeVar(index, keep);
+			case LOCALS: return Instruction.storeVar(index, keep);
 			default: throw new UnsupportedOperationException("Unknown index type " + type);
 		}
 	}

compilation/src/main/java/me/topchetoeu/j2s/compilation/scope/VariableList.java

@@ -175,7 +175,7 @@ public final class VariableList implements Iterable<Variable> {
 		this.offset = () -> offset;
 	}
 	/**
-	 * @param offset Will offset the indices by the size of the given list
+	 * @param prev Will offset the indices by the size of the given list
 	 */
 	public VariableList(IndexType type, VariableList prev) {
 		this.indexType = type;

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/ArgumentsNode.java

@@ -1,7 +1,7 @@
 package me.topchetoeu.j2s.compilation.values;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.Node;
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/ArrayNode.java

@@ -3,13 +3,13 @@ package me.topchetoeu.j2s.compilation.values;
 import java.util.ArrayList;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 
 public class ArrayNode extends Node {

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/GlobalThisNode.java

@@ -1,7 +1,7 @@
 package me.topchetoeu.j2s.compilation.values;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.Node;
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/ObjectNode.java

@@ -4,16 +4,16 @@ import java.util.LinkedList;
 import java.util.List;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
 import me.topchetoeu.j2s.compilation.members.FieldMemberNode;
 import me.topchetoeu.j2s.compilation.members.Member;
 import me.topchetoeu.j2s.compilation.members.PropertyMemberNode;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.values.constants.NumberNode;
 import me.topchetoeu.j2s.compilation.values.constants.StringNode;
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/RegexNode.java

@@ -1,12 +1,12 @@
 package me.topchetoeu.j2s.compilation.values;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class RegexNode extends Node {
 	public final String pattern, flags;
@@ -15,7 +15,10 @@ public class RegexNode extends Node {
 	}
 
 	@Override public void compile(CompileResult target, boolean pollute) {
-		target.add(Instruction.loadRegex(pattern, flags));
+		target.add(Instruction.loadIntrinsics("regex"));
+		target.add(Instruction.pushValue(pattern));
+		target.add(Instruction.pushValue(flags));
+		target.add(Instruction.call(2, false));
 		if (!pollute) target.add(Instruction.discard());
 	}
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/ThisNode.java

@@ -1,7 +1,7 @@
 package me.topchetoeu.j2s.compilation.values;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.Node;
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/VariableNode.java

@@ -1,13 +1,13 @@
 package me.topchetoeu.j2s.compilation.values;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.patterns.ChangeTarget;
 
 public class VariableNode extends Node implements ChangeTarget {

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/constants/BoolNode.java

@@ -1,7 +1,7 @@
 package me.topchetoeu.j2s.compilation.values.constants;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.Node;
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/constants/NullNode.java

@@ -1,7 +1,7 @@
 package me.topchetoeu.j2s.compilation.values.constants;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.Node;
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/constants/NumberNode.java

@@ -1,12 +1,12 @@
 package me.topchetoeu.j2s.compilation.values.constants;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class NumberNode extends Node {
 	public final double value;
@@ -23,15 +23,6 @@ public class NumberNode extends Node {
 		this.value = value;
 	}
 
-	public static double power(double a, long b) {
-		if (b == 0) return 1;
-		if (b == 1) return a;
-		if (b < 0) return 1 / power(a, -b);
-
-		if ((b & 1) == 0) return power(a * a, b / 2);
-		else return a * power(a * a, b / 2);
-	}
-
 	public static ParseRes<NumberNode> parse(Source src, int i) {
 		var n = Parsing.skipEmpty(src, i);
 		var loc = src.loc(i + n);

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/constants/StringNode.java

@@ -1,12 +1,12 @@
 package me.topchetoeu.j2s.compilation.values.constants;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class StringNode extends Node {
 	public final String value;

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/operations/AssignNode.java

@@ -1,9 +1,9 @@
 package me.topchetoeu.j2s.compilation.values.operations;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Operation;
 import me.topchetoeu.j2s.common.SyntaxException;
-import me.topchetoeu.j2s.common.parsing.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.Node;
 import me.topchetoeu.j2s.compilation.patterns.AssignTarget;

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/operations/CallNode.java

@@ -3,14 +3,14 @@ package me.topchetoeu.j2s.compilation.values.operations;
 import java.util.ArrayList;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class CallNode extends Node {
 	public final Node func;

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/operations/ChangeNode.java

@@ -1,14 +1,14 @@
 package me.topchetoeu.j2s.compilation.values.operations;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Operation;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.patterns.ChangeTarget;
 import me.topchetoeu.j2s.compilation.values.constants.NumberNode;
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/operations/DiscardNode.java

@@ -1,13 +1,13 @@
 package me.topchetoeu.j2s.compilation.values.operations;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 
 public class DiscardNode extends Node {

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/operations/IndexNode.java

@@ -1,14 +1,14 @@
 package me.topchetoeu.j2s.compilation.values.operations;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Instruction.BreakpointType;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.patterns.ChangeTarget;
 import me.topchetoeu.j2s.compilation.values.constants.NumberNode;
 import me.topchetoeu.j2s.compilation.values.constants.StringNode;

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/operations/LazyAndNode.java

@@ -1,13 +1,13 @@
 package me.topchetoeu.j2s.compilation.values.operations;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 public class LazyAndNode extends Node {
 	public final Node first, second;

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/operations/LazyOrNode.java

@@ -1,13 +1,13 @@
 package me.topchetoeu.j2s.compilation.values.operations;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 
 
 public class LazyOrNode extends Node {

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/operations/OperationNode.java

@@ -6,14 +6,14 @@ import java.util.Map;
 import java.util.stream.Collectors;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Operation;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.patterns.AssignTargetLike;
 import me.topchetoeu.j2s.compilation.patterns.ChangeTarget;
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/operations/PostfixNode.java

@@ -1,13 +1,13 @@
 package me.topchetoeu.j2s.compilation.values.operations;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Operation;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.patterns.ChangeTarget;
 import me.topchetoeu.j2s.compilation.values.constants.NumberNode;
 

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/operations/TypeofNode.java

@@ -1,13 +1,14 @@
 package me.topchetoeu.j2s.compilation.values.operations;
 
 import me.topchetoeu.j2s.common.Instruction;
-import me.topchetoeu.j2s.common.parsing.Location;
-import me.topchetoeu.j2s.common.parsing.ParseRes;
-import me.topchetoeu.j2s.common.parsing.Parsing;
-import me.topchetoeu.j2s.common.parsing.Source;
+import me.topchetoeu.j2s.common.Location;
+import me.topchetoeu.j2s.common.Operation;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.JavaScript;
 import me.topchetoeu.j2s.compilation.Node;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+import me.topchetoeu.j2s.compilation.parsing.Parsing;
+import me.topchetoeu.j2s.compilation.parsing.Source;
 import me.topchetoeu.j2s.compilation.values.VariableNode;
 
 public class TypeofNode extends Node {
@@ -20,14 +21,14 @@ public class TypeofNode extends Node {
 	@Override public void compile(CompileResult target, boolean pollute) {
 		if (value instanceof VariableNode varNode) {
 			target.add(VariableNode.toGet(target, varNode.loc(), varNode.name, true, true));
-			if (pollute) target.add(Instruction.typeof());
+			if (pollute) target.add(Instruction.operation(Operation.TYPEOF));
 			else target.add(Instruction.discard());
 
 			return;
 		}
 
 		value.compile(target, pollute);
-		if (pollute) target.add(Instruction.typeof());
+		if (pollute) target.add(Instruction.operation(Operation.TYPEOF));
 	}
 
 	public TypeofNode(Location loc, Node value) {

compilation/src/main/java/me/topchetoeu/j2s/compilation/values/operations/VariableAssignNode.java

@@ -1,8 +1,8 @@
 package me.topchetoeu.j2s.compilation.values.operations;
 
 import me.topchetoeu.j2s.common.Instruction;
+import me.topchetoeu.j2s.common.Location;
 import me.topchetoeu.j2s.common.Operation;
-import me.topchetoeu.j2s.common.parsing.Location;
 import me.topchetoeu.j2s.compilation.CompileResult;
 import me.topchetoeu.j2s.compilation.FunctionNode;
 import me.topchetoeu.j2s.compilation.Node;

compilation/src/test/java/me/topchetoeu/j2s/compilation/TestParseRes.java

@@ -0,0 +1,98 @@
+package me.topchetoeu.j2s.compilation;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import org.junit.jupiter.api.Test;
+
+import me.topchetoeu.j2s.common.Location;
+import me.topchetoeu.j2s.compilation.parsing.ParseRes;
+
+public class TestParseRes {
+	@Test public void testCreateFailed() {
+		var res = ParseRes.failed();
+		assertEquals(false, res.isSuccess());
+		assertEquals(true, res.isFailed());
+		assertEquals(false, res.isError());
+		assertEquals(0, res.n);
+		assertEquals(null, res.result);
+		assertEquals(null, res.errorLocation);
+		assertEquals(null, res.error);
+	}
+	@Test public void testCreateError() {
+		var res = ParseRes.error(Location.of("test:10:5"), "test");
+		assertEquals(false, res.isSuccess());
+		assertEquals(false, res.isFailed());
+		assertEquals(true, res.isError());
+		assertEquals(0, res.n);
+		assertEquals(null, res.result);
+		assertEquals(Location.of("test:10:5"), res.errorLocation);
+		assertEquals("test", res.error);
+	}
+	@Test public void testCreateResult() {
+		var res = ParseRes.res("test", 10);
+		assertEquals(true, res.isSuccess());
+		assertEquals(false, res.isFailed());
+		assertEquals(false, res.isError());
+		assertEquals(10, res.n);
+		assertEquals("test", res.result);
+		assertEquals(null, res.errorLocation);
+		assertEquals(null, res.error);
+	}
+
+	@Test public void testChainFailed() {
+		var a = ParseRes.<Integer>failed();
+
+		var b1 = a.<String>chainError();
+		assertEquals(a, b1);
+
+		var b2 = a.<String>chainError(Location.of("test:1:2"), "test");
+		assertEquals(true, b2.isError());
+		assertEquals("test", b2.error);
+	}
+	@Test public void testChainError() {
+		var a = ParseRes.<Integer>error(Location.of("test:1:2"), "test");
+
+		var b1 = a.<String>chainError();
+		assertEquals(a, b1);
+
+		var b2 = a.<String>chainError(Location.of("test:1:2"), "test");
+		assertEquals(a, b2);
+	}
+	@Test public void testChainResult() {
+		var a = ParseRes.<Integer>res(10, 6);
+
+		assertThrows(RuntimeException.class, () -> a.<String>chainError());
+
+		var b1 = a.<String>chainError(Location.of("test:1:2"), "test");
+		assertEquals(true, b1.isError());
+		assertEquals("test", b1.error);
+	}
+
+
+	@Test public void testShouldAdd5() {
+		var a = ParseRes.res("test", 6);
+		var b = a.addN(5);
+
+		assertEquals(11, b.n);
+	}
+	@Test public void testShouldSet5() {
+		var a = ParseRes.res("test", 6);
+		var b = a.setN(5);
+
+		assertEquals(5, b.n);
+	}
+
+	@Test public void testShouldNotAdd() {
+		var a = ParseRes.failed();
+		var b = a.addN(5);
+
+		assertEquals(0, b.n);
+	}
+	@Test public void testShouldNotSet() {
+		var a = ParseRes.failed();
+		var b = a.setN(5);
+
+		assertEquals(0, b.n);
+	}
+}

compilation/src/test/java/me/topchetoeu/j2s/compilation/TestSource.java

@@ -0,0 +1,65 @@
+package me.topchetoeu.j2s.compilation;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import org.junit.jupiter.api.Test;
+
+import me.topchetoeu.j2s.common.Environment;
+import me.topchetoeu.j2s.common.Filename;
+import me.topchetoeu.j2s.common.Location;
+import me.topchetoeu.j2s.compilation.parsing.Source;
+
+public class TestSource {
+	private Source mkSource(String src) {
+		return new Source(new Environment(), Filename.parse("test"), src);
+	}
+
+	@Test public void testShouldCreate() {
+		new Source(new Environment(), Filename.parse("test"), "my little source :)");
+		new Source(null, Filename.parse("test"), "my little source :)");
+		new Source("my little source :)");
+	}
+
+	@Test public void testShouldGet() {
+		var src = mkSource("1234567890");
+		assertEquals('1', src.at(0));
+		assertEquals('6', src.at(5));
+	}
+	@Test public void testShouldThrowOutOfRange() {
+		var src = mkSource("1234567890");
+		assertThrows(IndexOutOfBoundsException.class, () -> src.at(-1));
+		assertThrows(IndexOutOfBoundsException.class, () -> src.at(10));
+	}
+	@Test public void testImmutableSrcLoc() {
+		var src = mkSource("1234567890");
+		var loc = src.loc(5);
+		// kinda stupid
+		for (var i = 0; i < 1000; i++) {
+			assertEquals(5, loc.start());
+			assertEquals(0, loc.line());
+			assertEquals(Filename.parse("test"), loc.filename());
+		}
+	}
+	@Test public void testSingleLineSourceLocation() {
+		var src = mkSource("1234567890");
+		assertEquals(Location.of("test:1:1"), src.loc(-5));
+		assertEquals(Location.of("test:1:1"), src.loc(0));
+		assertEquals(Location.of("test:1:10"), src.loc(9));
+		assertEquals(Location.of("test:1:11"), src.loc(14));
+	}
+	@Test public void testMultilineSourceLocation() {
+		var src = mkSource("123\n456\n\n789\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
+		assertEquals(Location.of("test:1:1"), src.loc(-5));
+		assertEquals(Location.of("test:1:1"), src.loc(0));
+		assertEquals(Location.of("test:1:4"), src.loc(3));
+		assertEquals(Location.of("test:2:1"), src.loc(4));
+		assertEquals(Location.of("test:2:4"), src.loc(7));
+		assertEquals(Location.of("test:3:1"), src.loc(8));
+		assertEquals(Location.of("test:4:1"), src.loc(9));
+		assertEquals(Location.of("test:4:2"), src.loc(10));
+		assertEquals(Location.of("test:4:4"), src.loc(12));
+		assertEquals(Location.of("test:5:1"), src.loc(13));
+		assertEquals(Location.of("test:19:1"), src.loc(50));
+	}
+}

compilation/src/test/java/me/topchetoeu/j2s/compilation/parsing/TestParseString.java

@@ -0,0 +1,65 @@
+package me.topchetoeu.j2s.compilation.parsing;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+public class TestParseString {
+	@Test public void notAString() {
+		var res = Parsing.parseString(new Source("var a = 10"), 0);
+		assertEquals(true, res.isFailed());
+	}
+	@Test public void simple() {
+		var src = new Source("\"this is a test\"");
+		var res = Parsing.parseString(src, 0);
+		assertEquals(true, res.isSuccess());
+		assertEquals("this is a test", res.result);
+		assertEquals(16, res.n);
+	}
+	@Test public void simpleEscaped() {
+		var src = new Source("\'this\\\\ is \\n some \\'\\\"\\\n escapes for you :\\)\'");
+		var res = Parsing.parseString(src, 0);
+		assertEquals(true, res.isSuccess());
+		assertEquals("this\\ is \n some '\" escapes for you :)", res.result);
+		assertEquals(46, res.n);
+	}
+	@Test public void allEscaped() {
+		var src = new Source("'\\b\\t\\n\\f\\r\\0\\'\\x01\\u0123'");
+		var res = Parsing.parseString(src, 0);
+		assertEquals(true, res.isSuccess());
+		assertEquals("\b\t\n\f\r\0'\u0001\u0123", res.result);
+		assertEquals(26, res.n);
+	}
+	@Test public void shouldFailOctal() {
+		var res1 = Parsing.parseString(new Source("'\\012'"), 0);
+		assertEquals(true, res1.isError());
+
+		var res2 = Parsing.parseString(new Source("'\\123'"), 0);
+		assertEquals(true, res2.isError());
+	}
+	@Test public void shouldFailIncompleteHex() {
+		var res1 = Parsing.parseString(new Source("'\\x"), 0);
+		assertEquals(true, res1.isError());
+
+		var res2 = Parsing.parseString(new Source("'\\x1turd"), 0);
+		assertEquals(true, res2.isError());
+
+		var res3 = Parsing.parseString(new Source("'\\xturd"), 0);
+		assertEquals(true, res3.isError());
+	}
+	@Test public void shouldFailIncompleteUnicode() {
+		var res1 = Parsing.parseString(new Source("'\\u"), 0);
+		assertEquals(true, res1.isError());
+
+		var res2 = Parsing.parseString(new Source("'\\u123turd"), 0);
+		assertEquals(true, res2.isError());
+
+		var res3 = Parsing.parseString(new Source("'\\uturd"), 0);
+		assertEquals(true, res3.isError());
+	}
+	@Test public void unterminated() {
+		var src = new Source("\"this is a test");
+		var res = Parsing.parseString(src, 0);
+		assertEquals(true, res.isError());
+	}
+}

compilation/src/test/java/me/topchetoeu/j2s/compilation/parsing/TestSkipWhite.java

@@ -0,0 +1,48 @@
+package me.topchetoeu.j2s.compilation.parsing;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+public class TestSkipWhite {
+	@Test public void shBang() {
+		var res1 = Parsing.skipEmpty(new Source("#!my-shbang\n10"), 0);
+		assertEquals(12, res1);
+
+		var res2 = Parsing.skipEmpty(new Source("#!fin"), 0);
+		assertEquals(5, res2);
+	}
+	@Test public void simple() {
+		var res1 = Parsing.skipEmpty(new Source("2134   45324"), 4);
+		assertEquals(3, res1);
+
+		var res2 = Parsing.skipEmpty(new Source("2134   "), 4);
+		assertEquals(3, res2);
+	}
+
+	@Test public void nothing() {
+		var res1 = Parsing.skipEmpty(new Source("12345678"), 4);
+		assertEquals(0, res1);
+
+		var res2 = Parsing.skipEmpty(new Source("1234"), 4);
+		assertEquals(0, res2);
+	}
+
+	@Test public void singleLineComment() {
+		var res1 = Parsing.skipEmpty(new Source("123// test\n54314214"), 3);
+		assertEquals(8, res1);
+
+		var res2 = Parsing.skipEmpty(new Source("123// test"), 3);
+		assertEquals(7, res2);
+	}
+	@Test public void multilineComment() {
+		var res1 = Parsing.skipEmpty(new Source("123/*test*/54314214"), 3);
+		assertEquals(8, res1);
+
+		var res2 = Parsing.skipEmpty(new Source("123/*test*/"), 3);
+		assertEquals(8, res2);
+
+		var res3 = Parsing.skipEmpty(new Source("123/*test"), 3);
+		assertEquals(6, res3);
+	}
+}

doc/text/.gitignore

@@ -0,0 +1,9 @@
+/*
+!/img
+!/src
+!/.gitignore
+!/build
+!/document.md
+!/README.md
+!/requirements.md
+!/template.html

doc/text/README.md

@@ -0,0 +1 @@
+This is the main body of my thesis. **BE WARNED!** It is quite lengthy and written in Bulgarian.

doc/text/build

@@ -0,0 +1,42 @@
+#!/bin/luajit -lsrc.build
+
+local config = require "config";
+
+function profession(val)
+	if val == "sys" then
+		return {
+			profession = "481020 „Системен програмист“",
+			specialty = "4810201 „Системно програмиране“",
+		};
+	elseif val == "net" then
+		return combine {
+			profession = "523050 „Техник на компютърни системи“",
+			specialty = "5230502 „Компютърни мрежи“",
+		};
+	end
+end
+
+emit {
+	target = "res.html",
+	template {
+		template = "template.html",
+		year = os.date "%Y",
+		prev_year = os.date "%Y" - 1,
+		config,
+		profession(config.profession),
+
+		build {
+			"requirements.md",
+			content = "requirements",
+		},
+		build {
+			"document.md",
+			content = "content",
+			toc = "toc",
+			ctx = {
+				chapter_format = "Глава %s<br/>",
+				chapter_format_plain = "Глава %s: ",
+			},
+		},
+	},
+}