Better testing infrastructure; Initial exports/imports/re-exports

src/compiler.ts

@@ -257,8 +257,8 @@ export class Compiler extends DiagnosticEmitter {
           break;
 
         case NodeKind.EXPORT:
-          if ((<ExportStatement>statement).path)
-            this.compileSourceByPath((<StringLiteralExpression>(<ExportStatement>statement).path).value, <StringLiteralExpression>(<ExportStatement>statement).path);
+          if ((<ExportStatement>statement).normalizedPath != null)
+            this.compileSourceByPath(<string>(<ExportStatement>statement).normalizedPath, <StringLiteralExpression>(<ExportStatement>statement).path);
           if (noTreeShaking || isEntry)
             this.compileExportStatement(<ExportStatement>statement);
           break;
@@ -517,10 +517,10 @@ export class Compiler extends DiagnosticEmitter {
     const internalPath: string | null = statement.path ? statement.internalPath : statement.range.source.internalPath;
     for (let i: i32 = 0, k: i32 = members.length; i < k; ++i) {
       const member: ExportMember = members[i];
-      const internalExportName: string = internalPath + PATH_DELIMITER + member.identifier.name;
+      const internalExportName: string = internalPath + PATH_DELIMITER + member.externalIdentifier.name;
       const element: Element | null = <Element | null>this.program.exports.get(internalExportName);
-      if (!element)
-        throw new Error("unexpected missing element");
+      if (!element) // reported in Program#initialize
+        continue;
       switch (element.kind) {
 
         case ElementKind.CLASS_PROTOTYPE:
@@ -1356,6 +1356,7 @@ export class Compiler extends DiagnosticEmitter {
           // TODO: sizeof, load, store, see program.ts/initializeBuiltins
         }
       } else {
+        // TODO: infer type arguments from parameter types if omitted
         functionInstance = (<FunctionPrototype>element).resolveInclTypeArguments(expression.typeArguments, this.currentFunction.contextualTypeArguments, expression); // reports
       }
       if (!functionInstance)

src/diagnosticMessages.generated.ts

@@ -48,6 +48,7 @@ export enum DiagnosticCode {
   _abstract_modifier_can_only_appear_on_a_class_method_or_property_declaration = 1242,
   Duplicate_identifier_0 = 2300,
   Cannot_find_name_0 = 2304,
+  Module_0_has_no_exported_member_1 = 2305,
   Generic_type_0_requires_1_type_argument_s = 2314,
   Type_0_is_not_generic = 2315,
   Type_0_is_not_assignable_to_type_1 = 2322,
@@ -115,6 +116,7 @@ export function diagnosticCodeToString(code: DiagnosticCode): string {
     case 1242: return "'abstract' modifier can only appear on a class, method, or property declaration.";
     case 2300: return "Duplicate identifier '{0}'.";
     case 2304: return "Cannot find name '{0}'.";
+    case 2305: return "Module '{0}' has no exported member '{1}'.";
     case 2314: return "Generic type '{0}' requires {1} type argument(s).";
     case 2315: return "Type '{0}' is not generic.";
     case 2322: return "Type '{0}' is not assignable to type '{1}'.";

src/diagnosticMessages.json

@@ -48,6 +48,7 @@
 
   "Duplicate identifier '{0}'.": 2300,
   "Cannot find name '{0}'.": 2304,
+  "Module '{0}' has no exported member '{1}'.": 2305,
   "Generic type '{0}' requires {1} type argument(s).": 2314,
   "Type '{0}' is not generic.": 2315,
   "Type '{0}' is not assignable to type '{1}'.": 2322,

src/diagnostics.ts

@@ -154,8 +154,8 @@ export abstract class DiagnosticEmitter {
   emitDiagnostic(code: DiagnosticCode, category: DiagnosticCategory, range: Range, arg0: string | null = null, arg1: string | null = null) {
     const message: DiagnosticMessage = DiagnosticMessage.create(code, category, arg0, arg1).withRange(range);
     this.diagnostics.push(message);
-    console.log(formatDiagnosticMessage(message, true, true)); // temporary
-    console.log(new Error().stack);
+    console.log(formatDiagnosticMessage(message, true, true) + "\n"); // temporary
+    // console.log(new Error().stack);
   }
 
   error(code: DiagnosticCode, range: Range, arg0: string | null = null, arg1: string | null = null): void {

src/module.ts

@@ -613,6 +613,14 @@ export class Module {
     return _BinaryenModuleValidate(this.ref) == 1;
   }
 
+  toBinary(): Uint8Array {
+    throw new Error("not implemented");
+  }
+
+  toText(): string {
+    throw new Error("not implemented");
+  }
+
   dispose(): void {
     if (!this.ref) return; // sic
     _BinaryenModuleDispose(this.ref);

src/program.ts

@@ -1,6 +1,6 @@
 import { Target } from "./compiler";
 import { GETTER_PREFIX, SETTER_PREFIX, PATH_DELIMITER } from "./constants";
-import { DiagnosticCode, DiagnosticMessage, DiagnosticEmitter } from "./diagnostics";
+import { DiagnosticCode, DiagnosticMessage, DiagnosticEmitter, DiagnosticCategory } from "./diagnostics";
 import { Type, typesToString } from "./types";
 import { I64 } from "./util";
 import {
@@ -40,19 +40,20 @@ import {
   VariableDeclaration,
   VariableStatement,
 
-  hasModifier
+  hasModifier,
+  mangleInternalName
 
 } from "./ast";
 
 class QueuedExport {
-  isForeign: bool;
+  isReExport: bool;
   referencedName: string;
   member: ExportMember;
 }
 
 class QueuedImport {
   internalName: string;
-  importName: string;
+  referencedName: string;
   declaration: ImportDeclaration;
 }
 
@@ -130,61 +131,63 @@ export class Program extends DiagnosticEmitter {
       }
     }
 
-    // at this point queued exports should be resolvable
-    for (let [exportName, queuedExport] of queuedExports) { // all file-level exports
-      if (queuedExport.isForeign) {
-        const seen: Set<QueuedExport> = new Set();
-        while (queuedExports.has(queuedExport.referencedName)) {
-          queuedExport = <QueuedExport>queuedExports.get(queuedExport.referencedName);
-          if (seen.has(queuedExport))
-            break;
-          seen.add(queuedExport);
-        }
-        if (this.exports.has(queuedExport.referencedName)) {
-          const element: Element = <Element>this.exports.get(queuedExport.referencedName);
-          if (!this.exports.has(exportName))
-            this.exports.set(exportName, element);
-          if (queuedExport.member.range.source.isEntry)
-            element.globalExportName = queuedExport.member.externalIdentifier.name;
-        } else
-          this.error(DiagnosticCode.Cannot_find_name_0, queuedExport.member.externalIdentifier.range, queuedExport.referencedName);
-      } else /* local */ {
-        if (this.elements.has(queuedExport.referencedName)) {
-          const element: Element = <Element>this.elements.get(queuedExport.referencedName);
-          if (!this.exports.has(exportName))
-            this.exports.set(exportName, element);
-          if (queuedExport.member.range.source.isEntry)
-            element.globalExportName = queuedExport.member.externalIdentifier.name;
-        } else
-          this.error(DiagnosticCode.Cannot_find_name_0, queuedExport.member.externalIdentifier.range, queuedExport.referencedName);
+    let element: Element | null;
+
+    // queued imports should be resolvable now
+    for (let i: i32 = 0; i < queuedImports.length;) {
+      const queuedImport: QueuedImport = queuedImports[i];
+      element = this.tryResolveImport(queuedImport.referencedName, queuedExports);
+      if (element) {
+        this.elements.set(queuedImport.internalName, element);
+        queuedImports.splice(i, 1);
+      } else {
+        this.error(DiagnosticCode.Module_0_has_no_exported_member_1, queuedImport.declaration.range, (<ImportStatement>queuedImport.declaration.parent).path.value, queuedImport.declaration.externalIdentifier.name);
+        ++i;
       }
     }
 
-    // at this point queued imports should be resolvable as well
-    for (let i: i32 = 0, k: i32 = queuedImports.length; i < k; ++i) {
-      const queuedImport: QueuedImport = queuedImports[i];
-      const internalName: string = queuedImport.internalName;
-      const seen: Set<QueuedExport> = new Set();
-      let importName: string = queuedImport.importName;
-      while (queuedExports.has(importName)) {
-        const queuedExport: QueuedExport = <QueuedExport>queuedExports.get(importName);
-        importName = queuedExport.referencedName;
-        if (seen.has(queuedExport))
+    // queued exports should be resolvable noww
+    for (let [exportName, queuedExport] of queuedExports) {
+      let currentExport: QueuedExport | null = queuedExport;
+      do {
+        if (currentExport.isReExport) {
+          element = <Element | null>this.exports.get(currentExport.referencedName);
+          if (element) {
+            this.exports.set(exportName, element);
+            break;
+          }
+          currentExport = <QueuedExport | null>queuedExports.get(currentExport.referencedName);
+          if (!currentExport)
+            this.error(DiagnosticCode.Module_0_has_no_exported_member_1, queuedExport.member.externalIdentifier.range, (<StringLiteralExpression>(<ExportStatement>queuedExport.member.parent).path).value, queuedExport.member.externalIdentifier.name);
+        } else {
+          element = <Element | null>this.elements.get(currentExport.referencedName);
+          if (element)
+            this.exports.set(exportName, element);
+          else
+            this.error(DiagnosticCode.Cannot_find_name_0, queuedExport.member.range, queuedExport.member.identifier.name);
           break;
-        seen.add(queuedExport);
-      }
-      if (this.exports.has(importName)) {
-        if (this.elements.has(internalName))
-          this.error(DiagnosticCode.Duplicate_identifier_0, queuedImport.declaration.identifier.range, internalName);
-        else {
-          const element: Element = <Element>this.exports.get(importName);
-          this.elements.set(internalName, element);
         }
-      } else
-        this.error(DiagnosticCode.Cannot_find_name_0, queuedImport.declaration.externalIdentifier.range, importName);
+      } while (currentExport);
     }
   }
 
+  private tryResolveImport(referencedName: string, queuedExports: Map<string,QueuedExport>): Element | null {
+    let element: Element | null;
+    do {
+      element = <Element | null>this.exports.get(referencedName);
+      if (element)
+        return element;
+      const queuedExport: QueuedExport | null = <QueuedExport | null>queuedExports.get(referencedName);
+      if (!queuedExport)
+        return null;
+      if (queuedExport.isReExport) {
+        referencedName = queuedExport.referencedName;
+        continue;
+      }
+      return <Element | null>this.elements.get(queuedExport.referencedName);
+    } while (true);
+  }
+
   private initializeClass(declaration: ClassDeclaration): void {
     const internalName: string = declaration.internalName;
     if (this.elements.has(internalName)) {
@@ -288,21 +291,79 @@ export class Program extends DiagnosticEmitter {
   }
 
   private initializeExport(member: ExportMember, internalPath: string | null, queuedExports: Map<string,QueuedExport>): void {
-    const exportName: string = member.range.source.internalPath + PATH_DELIMITER + member.externalIdentifier.name;
-    if (queuedExports.has(exportName)) {
-      this.error(DiagnosticCode.Export_declaration_conflicts_with_exported_declaration_of_0, member.externalIdentifier.range, exportName);
+    const externalName: string = member.range.source.internalPath + PATH_DELIMITER + member.externalIdentifier.name;
+
+    if (this.exports.has(externalName)) {
+      this.error(DiagnosticCode.Export_declaration_conflicts_with_exported_declaration_of_0, member.externalIdentifier.range, externalName);
       return;
     }
-    const queuedExport: QueuedExport = new QueuedExport();
+
+    let referencedName: string;
+
+    // export local element
     if (internalPath == null) {
-      queuedExport.isForeign = false;
-      queuedExport.referencedName = member.range.source.internalPath + PATH_DELIMITER + member.identifier.name;
+      referencedName = member.range.source.internalPath + PATH_DELIMITER + member.identifier.name;
+
+      // resolve right away if the element exists
+      if (this.elements.has(referencedName)) {
+        this.exports.set(externalName, <Element>this.elements.get(referencedName));
+        return;
+      }
+
+      // otherwise queue it
+      if (queuedExports.has(externalName)) {
+        this.error(DiagnosticCode.Export_declaration_conflicts_with_exported_declaration_of_0, member.externalIdentifier.range, externalName);
+        return;
+      }
+      const queuedExport: QueuedExport = new QueuedExport();
+      queuedExport.isReExport = false;
+      queuedExport.referencedName = referencedName; // -> internal name
+      queuedExport.member = member;
+      queuedExports.set(externalName, queuedExport);
+
+    // export external element
     } else {
-      queuedExport.isForeign = true;
-      queuedExport.referencedName = (<string>internalPath) + PATH_DELIMITER + member.identifier.name;
+      referencedName = (<string>internalPath) + PATH_DELIMITER + member.externalIdentifier.name;
+
+      // resolve right away if the export exists
+      if (this.exports.has(referencedName)) {
+        this.exports.set(externalName, <Element>this.exports.get(referencedName));
+        return;
+      }
+
+      // walk already known queued exports
+      const seen: Set<QueuedExport> = new Set();
+      while (queuedExports.has(referencedName)) {
+        const queuedExport: QueuedExport = <QueuedExport>queuedExports.get(referencedName);
+        if (queuedExport.isReExport) {
+          if (this.exports.has(queuedExport.referencedName)) {
+            this.exports.set(externalName, <Element>this.exports.get(referencedName));
+            return;
+          }
+          referencedName = queuedExport.referencedName;
+          if (seen.has(queuedExport))
+            break;
+          seen.add(queuedExport);
+        } else {
+          if (this.elements.has(queuedExport.referencedName)) {
+            this.exports.set(externalName, <Element>this.elements.get(referencedName));
+            return;
+          }
+          break;
+        }
+      }
+
+      // otherwise queue it
+      if (queuedExports.has(externalName)) {
+        this.error(DiagnosticCode.Export_declaration_conflicts_with_exported_declaration_of_0, member.externalIdentifier.range, externalName);
+        return;
+      }
+      const queuedReExport: QueuedExport = new QueuedExport();
+      queuedReExport.isReExport = true;
+      queuedReExport.referencedName = referencedName; // -> export name
+      queuedReExport.member = member;
+      queuedExports.set(externalName, queuedReExport);
     }
-    queuedExport.member = member;
-    queuedExports.set(exportName, queuedExport);
   }
 
   private initializeFunction(declaration: FunctionDeclaration): void {
@@ -330,29 +391,48 @@ export class Program extends DiagnosticEmitter {
   }
 
   private initializeImport(declaration: ImportDeclaration, internalPath: string, queuedExports: Map<string,QueuedExport>, queuedImports: QueuedImport[]): void {
-    const importName: string = internalPath + PATH_DELIMITER + declaration.externalIdentifier.name;
-    let resolvedImportName: string = importName;
-    const seen: Set<QueuedExport> = new Set();
-    while (queuedExports.has(resolvedImportName)) {
-      const queuedExport: QueuedExport = <QueuedExport>queuedExports.get(resolvedImportName);
-      resolvedImportName = queuedExport.referencedName;
-      if (seen.has(queuedExport))
-        break;
-      seen.add(queuedExport);
-    }
     const internalName: string = declaration.internalName;
-    if (this.exports.has(resolvedImportName)) { // resolvable right away
-      if (this.elements.has(internalName))
-        this.error(DiagnosticCode.Duplicate_identifier_0, declaration.identifier.range, internalName);
-      else
-        this.elements.set(internalName, <Element>this.exports.get(resolvedImportName));
-    } else { // points to yet unresolved export
-      const queuedImport: QueuedImport = new QueuedImport();
-      queuedImport.internalName = internalName;
-      queuedImport.importName = importName;
-      queuedImport.declaration = declaration;
-      queuedImports.push(queuedImport);
+    if (this.elements.has(internalName)) {
+      this.error(DiagnosticCode.Duplicate_identifier_0, declaration.identifier.range, internalName);
+      return;
     }
+
+    let referencedName: string = internalPath + PATH_DELIMITER + declaration.externalIdentifier.name;
+
+    // resolve right away if the export exists
+    if (this.exports.has(referencedName)) {
+      this.elements.set(internalName, <Element>this.exports.get(referencedName));
+      return;
+    }
+
+    // walk already known queued exports
+    const seen: Set<QueuedExport> = new Set();
+    while (queuedExports.has(referencedName)) {
+      const queuedExport: QueuedExport = <QueuedExport>queuedExports.get(referencedName);
+      if (queuedExport.isReExport) {
+        if (this.exports.has(queuedExport.referencedName)) {
+          this.elements.set(internalName, <Element>this.exports.get(referencedName));
+          return;
+        }
+        referencedName = queuedExport.referencedName;
+        if (seen.has(queuedExport))
+          break;
+        seen.add(queuedExport);
+      } else {
+        if (this.elements.has(queuedExport.referencedName)) {
+          this.elements.set(internalName, <Element>this.elements.get(referencedName));
+          return;
+        }
+        break;
+      }
+    }
+
+    // otherwise queue it
+    const queuedImport: QueuedImport = new QueuedImport();
+    queuedImport.internalName = internalName;
+    queuedImport.referencedName = referencedName;
+    queuedImport.declaration = declaration;
+    queuedImports.push(queuedImport);
   }
 
   private initializeInterface(declaration: InterfaceDeclaration): void {

src/tokenizer.ts

@@ -724,10 +724,9 @@ export class Tokenizer extends DiagnosticEmitter {
   range(start: i32 = -1, end: i32 = -1): Range {
     if (start < 0) {
       start = this.tokenPos;
-      if (end < 0)
-        end = start;
-    } else if (end < 0)
       end = this.pos;
+    } else if (end < 0)
+      end = start;
     return new Range(this.source, start, end);
   }
 

tests/README.md

@@ -0,0 +1,29 @@
+Parser
+------
+
+Tests consist of a test case that is first parsed and then serialized again. The output is then compared to its respective fixture.
+
+```
+$> npm run test:parser [case name]
+```
+
+To recreate the fixtures:
+
+```
+$>npm run test:parser -- --create
+```
+
+Compiler
+--------
+
+Tests consist of a test case that is compiled to a module, converted to text format and then compared to its respective fixture.
+
+```
+$> npm run test:compiler [case name]
+```
+
+To recreate the fixtures:
+
+```
+$>npm run test:compiler -- --create
+```

tests/binaryen.ts

@@ -1,6 +1,7 @@
-/// <reference path="../src/binaryen.d.ts" />
+/// <reference path="../src/glue/binaryen.d.ts" />
+
 import "../src/glue/js";
-import { Type, Module, MemorySegment, BinaryOp } from "../src/binaryen";
+import { NativeType, Module, MemorySegment, BinaryOp } from "../src/module";
 import { Target } from "../src/compiler";
 import { U64 } from "../src/util";
 
@@ -11,33 +12,33 @@ mod.setMemory(1, Module.MAX_MEMORY_WASM32, [
   MemorySegment.create(new Uint8Array(4), U64.fromI32(12))
 ], Target.WASM32, "memory");
 
-const add = mod.addFunctionType("iii", Type.I32, [ Type.I32, Type.I32 ]);
+const add = mod.addFunctionType("iii", NativeType.I32, [ NativeType.I32, NativeType.I32 ]);
 mod.addFunction("add", add, [], mod.createReturn(
   mod.createBinary(BinaryOp.AddI32,
-    mod.createGetLocal(0, Type.I32),
-    mod.createGetLocal(1, Type.I32)
+    mod.createGetLocal(0, NativeType.I32),
+    mod.createGetLocal(1, NativeType.I32)
   )
 ));
 mod.addExport("add", "add");
 
-const lit = mod.addFunctionType("I", Type.I64, []);
+const lit = mod.addFunctionType("I", NativeType.I64, []);
 mod.addFunction("lit", lit, [], mod.createReturn(
   mod.createI64(0, 0x80000000) // I64_MIN
 ));
 mod.addExport("lit", "lit");
 
-mod.addGlobal("42", Type.I32, false, mod.createI32(42));
+mod.addGlobal("42", NativeType.I32, false, mod.createI32(42));
 
-const aSwitch = mod.addFunctionType("ii", Type.I32, [ Type.I32 ]);
+const aSwitch = mod.addFunctionType("ii", NativeType.I32, [ NativeType.I32 ]);
 const rl = mod.createRelooper();
-const b0 = rl.addBlockWithSwitch(mod.createNop(), mod.createGetLocal(0, Type.I32));
+const b0 = rl.addBlockWithSwitch(mod.createNop(), mod.createGetLocal(0, NativeType.I32));
 let b1, b2, b3;
 rl.addBranchForSwitch(b0, b2 = rl.addBlock(mod.createReturn(mod.createI32(1))), [1]); // indexed branch
 rl.addBranchForSwitch(b0, b3 = rl.addBlock(mod.createReturn(mod.createI32(2))), [2]); // indexed branch
 rl.addBranch(b0, b1 = rl.addBlock(mod.createDrop(mod.createI32(0)))); // default branch
 rl.addBranch(b1, b2);
 
-mod.addFunction("aSwitch", aSwitch, [ Type.I32 ], mod.createBlock(null, [
+mod.addFunction("aSwitch", aSwitch, [ NativeType.I32 ], mod.createBlock(null, [
   rl.renderAndDispose(b0, 1),
   mod.createUnreachable()
 ]));

tests/compiler.ts

@@ -1,72 +1,74 @@
+/// <reference path="../src/glue/binaryen.d.ts" />
+
+import * as fs from "fs";
+import * as path from "path";
+import * as chalk from "chalk";
+import * as glob from "glob";
+
 import "../src/glue/js";
 import { Compiler } from "../src/compiler";
+import { Module } from "../src/module";
 import { Parser } from "../src/parser";
+import { diff } from "./util/diff";
 
-/* const files: Map<string,string> = new Map([
-  ["main", `import { Test as TestAlias } from "./a"; export { TestAlias } from "./d"; if (1) {} export const a: i32 = 123;`],
-  ["a", `export { Test } from "./b";`],
-  ["b", `export { Test } from "./c";`],
-  ["c", `export enum Test { ONE = 1, TWO = 1 + 1 }`],
-  ["d", `export { Test as TestAlias } from "./b";`]
-]); */
+// TODO: implement properly in module.ts
+import * as binaryen from "binaryen";
+Module.prototype.toText = function(): string {
+  let old: any = (<any>binaryen)["print"];
+  let ret: string = "";
+  (<any>binaryen)["print"] = function(x: string): void { ret += x + "\n" };
+  _BinaryenModulePrint(this.ref);
+  (<any>binaryen)["print"] = old;
+  return ret;
+}
 
-const files: Map<string,string> = new Map([
-  ["main",
-`
-  function add(a: i32, b: i32): i32 { return a + b; };
-  export { add };
-  export { sub as notadd } from "../other";
-  2+3;
-  export function switchMe(n: i32): i32 {
-    switch (n) {
-      case 0:
-        return 0;
-      default:
-        return 2;
-      case 1:
-        return 1;
-      case -1:
-        break;
+const isCreate = process.argv[2] === "--create";
+const filter = process.argv.length > 2 && !isCreate ? "*" + process.argv[2] + "*.ts" : "*.ts";
+
+glob.sync(filter, { cwd: __dirname + "/compiler" }).forEach(filename => {
+  if (filename.charAt(0) == "_" || filename.endsWith(".fixture.ts"))
+    return;
+
+  console.log("Testing compiler/" + filename);
+
+  const parser = new Parser();
+  const sourceText = fs.readFileSync(__dirname + "/compiler/" + filename, { encoding: "utf8" });
+  parser.parseFile(sourceText, filename, true);
+  let nextFile;
+  while ((nextFile = parser.nextFile()) !== null) {
+    let nextSourceText: string;
+    try {
+      nextSourceText = fs.readFileSync(path.join(__dirname, "compiler", nextFile + ".ts"), { encoding: "utf8" });
+    } catch (e) {
+      nextSourceText = fs.readFileSync(path.join(__dirname, "compiler", nextFile, "index.ts"), { encoding: "utf8" });
     }
-    return -1;
+    parser.parseFile(nextSourceText, nextFile, false);
   }
-  import { sub } from "../other";
-  export function doCall(): void {
-    sub(1,2);
+  const program = parser.finish();
+  const module = Compiler.compile(program);
+  const actual = module.toText() + "(;\n[program.elements]\n  " + iterate(program.elements.keys()).join("\n  ") + "\n[program.exports]\n  " + iterate(program.exports.keys()).join("\n  ") + "\n;)\n";
+  const fixture = path.basename(filename, ".ts") + ".wast";
+
+  if (isCreate) {
+    fs.writeFileSync(__dirname + "/compiler/" + fixture, actual, { encoding: "utf8" });
+    console.log("Created\n");
+  } else {
+    const expected = fs.readFileSync(__dirname + "/compiler/" + fixture, { encoding: "utf8" });
+    const diffs = diff("compiler/" + fixture, expected, actual);
+    if (diffs !== null) {
+      process.exitCode = 1;
+      console.log(diffs);
+    } else {
+      console.log("No changes\n");
+    }
   }
-  export function doNaN(value: f32): bool {
-    return isNaN<f32>(0.3);
+});
+
+function iterate<T>(it: IterableIterator<T>): T[] {
+  let current: IteratorResult<T>;
+  var arr: T[] = [];
+  while ((current = it.next()) && !current.done) {
+    arr.push(current.value);
   }
-  export function doRotl(value: u16): u8 {
-    return rotl<i32>(value, 2);
-  }
-`],
-
-  ["../other",
-`
-  export function sub(a: i32, b: i32): i32 { return a - b + c; };
-  let c: i32 = 42 >> 31;
-  1+2;
-`]
-]);
-
-const parser = new Parser();
-
-parser.parseFile(<string>files.get("main"), "main", true);
-do {
-  let nextFile = parser.nextFile();
-  if (!nextFile)
-    break;
-  if (!files.has(nextFile))
-    throw new Error("file not found: " + nextFile);
-  parser.parseFile(<string>files.get(nextFile), nextFile, false);
-} while(true);
-const program = parser.finish();
-const compiler = new Compiler(program);
-const module = compiler.compile();
-// console.log(program.elements.keys());
-
-// module.optimize();
-module.validate();
-if (!module.noEmit)
-  _BinaryenModulePrint(module.ref);
+  return arr;
+}

tests/compiler/export.ts

@@ -0,0 +1,15 @@
+export function add(a: i32, b: i32): i32 {
+  return a + b;
+}
+
+function sub(a: i32, b: i32): i32 {
+  return a - b;
+}
+
+export { sub as renamed_sub };
+
+export let a: i32 = 1;
+
+let b: i32 = 2;
+
+export { b as renamed_b };

tests/compiler/export.wast

@@ -0,0 +1,52 @@
+(module
+ (type $iii (func (param i32 i32) (result i32)))
+ (global $export/a i32 (i32.const 1))
+ (global $export/b i32 (i32.const 2))
+ (memory $0 1)
+ (data (i32.const 4) "\08\00\00\00")
+ (export "memory" (memory $0))
+ (func $export/add (; 0 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (return
+   (i32.add
+    (get_local $0)
+    (get_local $1)
+   )
+  )
+ )
+ (func $export/sub (; 1 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (return
+   (i32.sub
+    (get_local $0)
+    (get_local $1)
+   )
+  )
+ )
+)
+(;
+[program.elements]
+  clz
+  ctz
+  popcnt
+  rotl
+  rotr
+  abs
+  ceil
+  copysign
+  floor
+  max
+  min
+  nearest
+  sqrt
+  trunc
+  isNaN
+  isFinite
+  export/add
+  export/sub
+  export/a
+  export/b
+[program.exports]
+  export/add
+  export/renamed_sub
+  export/a
+  export/renamed_b
+;)

tests/compiler/import.ts

@@ -0,0 +1,3 @@
+import { add, renamed_sub as sub, a, renamed_b as b } from "./export";
+
+add(a, b) + sub(b, a);

tests/compiler/import.wast

@@ -0,0 +1,72 @@
+(module
+ (type $iii (func (param i32 i32) (result i32)))
+ (type $v (func))
+ (global $export/a i32 (i32.const 1))
+ (global $export/b i32 (i32.const 2))
+ (memory $0 1)
+ (data (i32.const 4) "\08\00\00\00")
+ (export "memory" (memory $0))
+ (start $start)
+ (func $export/add (; 0 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (return
+   (i32.add
+    (get_local $0)
+    (get_local $1)
+   )
+  )
+ )
+ (func $export/sub (; 1 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (return
+   (i32.sub
+    (get_local $0)
+    (get_local $1)
+   )
+  )
+ )
+ (func $start (; 2 ;) (type $v)
+  (drop
+   (i32.add
+    (call $export/add
+     (get_global $export/a)
+     (get_global $export/b)
+    )
+    (call $export/sub
+     (get_global $export/b)
+     (get_global $export/a)
+    )
+   )
+  )
+ )
+)
+(;
+[program.elements]
+  clz
+  ctz
+  popcnt
+  rotl
+  rotr
+  abs
+  ceil
+  copysign
+  floor
+  max
+  min
+  nearest
+  sqrt
+  trunc
+  isNaN
+  isFinite
+  export/add
+  export/sub
+  export/a
+  export/b
+  import/add
+  import/sub
+  import/a
+  import/b
+[program.exports]
+  export/add
+  export/renamed_sub
+  export/a
+  export/renamed_b
+;)

tests/compiler/reexport.ts

@@ -0,0 +1,7 @@
+export { add, renamed_sub } from "./export";
+
+import { add as imported_add, renamed_sub as imported_sub } from "./export";
+
+export { imported_add as renamed_add, imported_sub as rerenamed_sub };
+
+imported_add(1, 2) + imported_sub(3, 4);

tests/compiler/reexport.wast

@@ -0,0 +1,72 @@
+(module
+ (type $iii (func (param i32 i32) (result i32)))
+ (type $v (func))
+ (memory $0 1)
+ (data (i32.const 4) "\08\00\00\00")
+ (export "memory" (memory $0))
+ (start $start)
+ (func $export/add (; 0 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (return
+   (i32.add
+    (get_local $0)
+    (get_local $1)
+   )
+  )
+ )
+ (func $export/sub (; 1 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (return
+   (i32.sub
+    (get_local $0)
+    (get_local $1)
+   )
+  )
+ )
+ (func $start (; 2 ;) (type $v)
+  (drop
+   (i32.add
+    (call $export/add
+     (i32.const 1)
+     (i32.const 2)
+    )
+    (call $export/sub
+     (i32.const 3)
+     (i32.const 4)
+    )
+   )
+  )
+ )
+)
+(;
+[program.elements]
+  clz
+  ctz
+  popcnt
+  rotl
+  rotr
+  abs
+  ceil
+  copysign
+  floor
+  max
+  min
+  nearest
+  sqrt
+  trunc
+  isNaN
+  isFinite
+  export/add
+  export/sub
+  export/a
+  export/b
+  reexport/imported_add
+  reexport/imported_sub
+[program.exports]
+  export/add
+  export/renamed_sub
+  export/a
+  export/renamed_b
+  reexport/add
+  reexport/renamed_sub
+  reexport/renamed_add
+  reexport/rerenamed_sub
+;)

tests/parser.ts

@@ -0,0 +1,40 @@
+import * as fs from "fs";
+import * as chalk from "chalk";
+import * as glob from "glob";
+
+import "../src/glue/js";
+import { Parser } from "../src/parser";
+import { diff } from "./util/diff";
+
+const isCreate = process.argv[2] === "--create";
+const filter = process.argv.length > 2 && !isCreate ? "*" + process.argv[2] + "*.ts" : "**.ts";
+
+glob.sync(filter, { cwd: __dirname + "/parser" }).forEach(filename => {
+  if (filename.charAt(0) == "_" || filename.endsWith(".fixture.ts"))
+    return;
+
+  console.log("Testing parser/" + filename);
+
+  const parser = new Parser();
+  const sourceText = fs.readFileSync(__dirname + "/parser/" + filename, { encoding: "utf8" }).replace(/\r?\n/g, "\n").replace(/^\/\/.*\r?\n/mg, "");
+  parser.parseFile(sourceText, filename, true);
+
+  var sb: string[] = [];
+  parser.program.sources[0].serialize(sb);
+  const actual = sb.join("");
+  const fixture = filename + ".fixture.ts";
+
+  if (isCreate) {
+    fs.writeFileSync(__dirname + "/parser/" + fixture, actual, { encoding: "utf8" });
+    console.log("Created\n");
+  } else {
+    const expected = fs.readFileSync(__dirname + "/parser/" + fixture, { encoding: "utf8" });
+    const diffs = diff("parser/" + fixture, expected, actual);
+    if (diffs !== null) {
+      process.exitCode = 1;
+      console.log(diffs);
+    } else {
+      console.log("No changes\n");
+    }
+  }
+});

tests/parser/class.ts.fixture.ts

@@ -0,0 +1,12 @@
+export class Test<T> {
+instanceFunction(): void {
+}
+static staticFunction(): void {
+}
+get instanceGetter(): i32 {
+}
+static set staticSetter(v: i32): i32 {
+}
+instanceField: i32;
+static staticField: i32;
+}

tests/parser/do.ts.fixture.ts

@@ -0,0 +1,3 @@
+do {
+;
+} while (a != b);

tests/parser/enum.ts.fixture.ts

@@ -0,0 +1,10 @@
+export const enum A {
+B = 1,
+C,
+D = 3
+}
+enum E {
+F,
+G = 1 + 2,
+H = 3 * 4
+}

tests/parser/fixtures/literals.ts

@@ -1,42 +0,0 @@
-0;
-1;
-2;
-3;
-4;
-5;
-6;
-7;
-8;
-9;
-// 0x0;
-// 0x1;
-// 0x2;
-// 0x3;
-// 0x4;
-// 0x5;
-// 0x6;
-// 0x7;
-// 0x8;
-// 0x9;
-// 0xA;
-// 0xB;
-// 0xC;
-// 0xD;
-// 0xE;
-// 0xF;
-// 0xa;
-// 0xb;
-// 0xc;
-// 0xd;
-// 0xe;
-// 0xf;
-// 0o0;
-// 0o1;
-// 0o2;
-// 0o3;
-// 0o4;
-// 0o5;
-// 0o6;
-// 0o7;
-// 0b0;
-// 0b1;

tests/parser/for.ts.fixture.ts

@@ -0,0 +1,9 @@
+for (let i: i32 = 0; i < 10; ++i) {
+;
+}
+for (i = 0; i < 10; ++i) {
+;
+}
+for (;;) {
+;
+}

tests/parser/function.ts.fixture.ts

@@ -0,0 +1,7 @@
+function simple(): void {
+}
+function typeparams<T, V extends T>(a: V | null = null): void {
+}
+@decorator()
+function withdecorator(): void {
+}

tests/parser/index.ts

@@ -1,41 +0,0 @@
-import * as fs from "fs";
-import * as diff from "diff";
-import * as chalk from "chalk";
-import * as glob from "glob";
-
-import "../../src/glue/js";
-import { NodeKind, ExpressionStatement } from "../../src/ast";
-import { Parser } from "../../src/parser";
-
-const filter = process.argv.length > 2 ? "*" + process.argv[2] + "*.ts" : "**.ts";
-
-const files = glob.sync(filter, { cwd: __dirname + "/fixtures" });
-files.forEach(filename => {
-  if (filename.charAt(0) == "_")  return;
-  const isTree = filename.indexOf(".tree.") >= 0;
-  const parser = new Parser();
-  const text = fs.readFileSync(__dirname + "/fixtures/" + filename, { encoding: "utf8" }).replace(/\r?\n/g, "\n").replace(/^\/\/.*\r?\n/mg, "");
-  parser.parseFile(text, filename, true);
-  var sb: string[] = [];
-  parser.program.sources[0].serialize(sb);
-  const actual = sb.join("");
-  const expected = isTree ? text : text.replace(/^\s+/mg, "");
-  const diffs = diff.diffLines(expected, actual);
-  let changed = false;
-  diffs.forEach(part => {
-    if (part.added || part.removed)
-      changed = true;
-  });
-  if (changed) { // print it
-    console.log("Differences in " + filename + ":");
-    diffs.forEach(part => {
-      if (part.added || part.removed)
-        changed = true;
-      process.stderr.write((part.added ? chalk.default.green : part.removed ? chalk.default.red : chalk.default.grey)(part.value));
-    });
-  } else {
-    console.log("No differences in " + filename + ".");
-  }
-  // parser.program.initialize();
-  // console.log(parser.program.names);
-});

tests/parser/literals.ts

@@ -0,0 +1,42 @@
+0;
+1;
+2;
+3;
+4;
+5;
+6;
+7;
+8;
+9;
+0x0;
+0x1;
+0x2;
+0x3;
+0x4;
+0x5;
+0x6;
+0x7;
+0x8;
+0x9;
+0xA;
+0xB;
+0xC;
+0xD;
+0xE;
+0xF;
+0xa;
+0xb;
+0xc;
+0xd;
+0xe;
+0xf;
+0o0;
+0o1;
+0o2;
+0o3;
+0o4;
+0o5;
+0o6;
+0o7;
+0b0;
+0b1;

tests/parser/literals.ts.fixture.ts

@@ -0,0 +1,42 @@
+0;
+1;
+2;
+3;
+4;
+5;
+6;
+7;
+8;
+9;
+0;
+1;
+2;
+3;
+4;
+5;
+6;
+7;
+8;
+9;
+10;
+11;
+12;
+13;
+14;
+15;
+10;
+11;
+12;
+13;
+14;
+15;
+0;
+1;
+2;
+3;
+4;
+5;
+6;
+7;
+0;
+1;

tests/parser/while.ts.fixture.ts

@@ -0,0 +1,9 @@
+while (1) {
+;
+}
+while (true) {
+;
+}
+while ("str") {
+;
+}

tests/util/diff.ts

@@ -0,0 +1,30 @@
+import * as JsDiff from "diff";
+import * as chalk from "chalk";
+
+export function diff(filename: string, expected: string, actual: string): string | null {
+  const diff = JsDiff.structuredPatch(filename, filename, expected, actual, "expected", "actual", { context: 2 });
+  if (!diff.hunks.length)
+    return null;
+
+  const ret = [];
+  ret.push('--- ' + diff.oldHeader);
+  ret.push('+++ ' + diff.newHeader);
+
+  for (let i = 0; i < diff.hunks.length; i++) {
+    const hunk = diff.hunks[i];
+    ret.push(
+      '@@ -' + hunk.oldStart + ',' + hunk.oldLines
+      + ' +' + hunk.newStart + ',' + hunk.newLines
+      + ' @@'
+    );
+    ret.push.apply(ret, hunk.lines.map(line =>
+      line.charAt(0) === "+"
+        ? chalk.default.green(line)
+        : line.charAt(0) === "-"
+        ? line = chalk.default.red(line)
+        : line
+    ));
+  }
+
+  return ret.join('\n') + '\n';
+}