Fixed for-loop parsing

package-lock.json

@@ -14,16 +14,32 @@
       "integrity": "sha512-q3zfJvaTroV5BjAAR+peTHEGAAhGrPX0z2EzCzpt2mwFA+qzUn2nigJLqSekXRtdULKmT8am7zjvTMZSapIgHw==",
       "dev": true
     },
+    "@types/glob": {
+      "version": "5.0.33",
+      "resolved": "https://registry.npmjs.org/@types/glob/-/glob-5.0.33.tgz",
+      "integrity": "sha512-BcD4yyWz+qmCggaYMSFF0Xn7GkO6tgwm3Fh9Gxk/kQmEU3Z7flQTnVlMyKBUNvXXNTCCyjqK4XT4/2hLd1gQ2A==",
+      "dev": true,
+      "requires": {
+        "@types/minimatch": "3.0.1",
+        "@types/node": "8.0.53"
+      }
+    },
     "@types/long": {
       "version": "3.0.32",
       "resolved": "https://registry.npmjs.org/@types/long/-/long-3.0.32.tgz",
       "integrity": "sha512-ZXyOOm83p7X8p3s0IYM3VeueNmHpkk/yMlP8CLeOnEcu6hIwPH7YjZBvhQkR0ZFS2DqZAxKtJ/M5fcuv3OU5BA==",
       "dev": true
     },
+    "@types/minimatch": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.1.tgz",
+      "integrity": "sha512-rUO/jz10KRSyA9SHoCWQ8WX9BICyj5jZYu1/ucKEJKb4KzLZCKMURdYbadP157Q6Zl1x0vHsrU+Z/O0XlhYQDw==",
+      "dev": true
+    },
     "@types/node": {
-      "version": "8.0.28",
+      "version": "8.0.53",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-8.0.28.tgz",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-8.0.53.tgz",
-      "integrity": "sha512-HupkFXEv3O3KSzcr3Ylfajg0kaerBg1DyaZzRBBQfrU3NN1mTBRE7sCveqHwXLS5Yrjvww8qFzkzYQQakG9FuQ=="
+      "integrity": "sha512-54Dm6NwYeiSQmRB1BLXKr5GELi0wFapR1npi8bnZhEcu84d/yQKqnwwXQ56hZ0RUbTG6L5nqDZaN3dgByQXQRQ=="
     },
     "ansi-styles": {
       "version": "3.2.0",
@@ -31,7 +47,7 @@
       "integrity": "sha512-NnSOmMEYtVR2JVMIGTzynRkkaxtiq1xnFBcdQD/DnNCYPoEPsVJhM98BDyaoNOQIi7p4okdi3E27eN7GQbsUug==",
       "dev": true,
       "requires": {
-        "color-convert": "1.9.0"
+        "color-convert": "1.9.1"
       }
     },
     "arrify": {
@@ -40,26 +56,42 @@
       "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=",
       "dev": true
     },
+    "balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
+      "dev": true
+    },
     "binaryen": {
       "version": "39.0.0-nightly.20171116",
       "resolved": "https://registry.npmjs.org/binaryen/-/binaryen-39.0.0-nightly.20171116.tgz",
       "integrity": "sha512-ljl/qPne0+8hYtNWITRSAtxNM1EG5NnvTg+HRmSUdNAK2j9wcyAAg5uVj+TgipEqY82kmHt5C9+TSQNEwaxgrw=="
     },
+    "brace-expansion": {
+      "version": "1.1.8",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.8.tgz",
+      "integrity": "sha1-wHshHHyVLsH479Uad+8NHTmQopI=",
+      "dev": true,
+      "requires": {
+        "balanced-match": "1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
     "chalk": {
-      "version": "2.1.0",
+      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.3.0.tgz",
-      "integrity": "sha512-LUHGS/dge4ujbXMJrnihYMcL4AoOweGnw9Tp3kQuqy1Kx5c1qKjqvMJZ6nVJPMWJtKCTN72ZogH3oeSO9g9rXQ==",
+      "integrity": "sha512-Az5zJR2CBujap2rqXGaJKaPHyJ0IrUimvYNX+ncCy8PJP4ltOGTrHUIo097ZaL2zMeKYpiCdqDvS6zdrTFok3Q==",
       "dev": true,
       "requires": {
         "ansi-styles": "3.2.0",
         "escape-string-regexp": "1.0.5",
-        "supports-color": "4.4.0"
+        "supports-color": "4.5.0"
       }
     },
     "color-convert": {
-      "version": "1.9.0",
+      "version": "1.9.1",
-      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.0.tgz",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.1.tgz",
-      "integrity": "sha1-Gsz5fdc5uYO/mU1W/sj5WFNkG3o=",
+      "integrity": "sha512-mjGanIiwQJskCC18rPR6OmrZ6fm2Lc7PeGFYwCmy5J34wC6F1PzdGL6xeMfmgicfYcNLGuVFA3WzXtIDCQSZxQ==",
       "dev": true,
       "requires": {
         "color-name": "1.1.3"
@@ -71,10 +103,16 @@
       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
       "dev": true
     },
+    "concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
+      "dev": true
+    },
     "diff": {
-      "version": "3.3.1",
+      "version": "3.4.0",
-      "resolved": "https://registry.npmjs.org/diff/-/diff-3.3.1.tgz",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-3.4.0.tgz",
-      "integrity": "sha512-MKPHZDMB0o6yHyDryUOScqZibp914ksXwAMYMTHj6KO8UeKsRYNJD3oNCKjTqZon+V488P7N/HzXF8t7ZR95ww==",
+      "integrity": "sha512-QpVuMTEoJMF7cKzi6bvWhRulU1fZqZnvyVQgNhPaxxuTYwyjn/j1v9falseQ/uXWwPnO56RBfwtg4h/EQXmucA==",
       "dev": true
     },
     "escape-string-regexp": {
@@ -83,12 +121,48 @@
       "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
       "dev": true
     },
+    "fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
+      "dev": true
+    },
+    "glob": {
+      "version": "7.1.2",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
+      "integrity": "sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==",
+      "dev": true,
+      "requires": {
+        "fs.realpath": "1.0.0",
+        "inflight": "1.0.6",
+        "inherits": "2.0.3",
+        "minimatch": "3.0.4",
+        "once": "1.4.0",
+        "path-is-absolute": "1.0.1"
+      }
+    },
     "has-flag": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-2.0.0.tgz",
       "integrity": "sha1-6CB68cx7MNRGzHC3NLXovhj4jVE=",
       "dev": true
     },
+    "inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
+      "dev": true,
+      "requires": {
+        "once": "1.4.0",
+        "wrappy": "1.0.2"
+      }
+    },
+    "inherits": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+      "dev": true
+    },
     "long": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/long/-/long-3.2.0.tgz",
@@ -101,6 +175,15 @@
       "integrity": "sha1-Uq06M5zPEM5itAQLcI/nByRLi5Y=",
       "dev": true
     },
+    "minimatch": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "dev": true,
+      "requires": {
+        "brace-expansion": "1.1.8"
+      }
+    },
     "minimist": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
@@ -124,6 +207,21 @@
         }
       }
     },
+    "once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "dev": true,
+      "requires": {
+        "wrappy": "1.0.2"
+      }
+    },
+    "path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
+      "dev": true
+    },
     "source-map": {
       "version": "0.5.7",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
@@ -152,9 +250,9 @@
       "dev": true
     },
     "supports-color": {
-      "version": "4.4.0",
+      "version": "4.5.0",
-      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-4.4.0.tgz",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-4.5.0.tgz",
-      "integrity": "sha512-rKC3+DyXWgK0ZLKwmRsrkyHVZAjNkfzeehuFWdGGcqGDTZFH73+RH6S/RDAAxl9GusSjZSUWYLmT9N5pzXFOXQ==",
+      "integrity": "sha1-vnoN5ITexcXN34s9WRJQRJEvY1s=",
       "dev": true,
       "requires": {
         "has-flag": "2.0.0"
@@ -167,8 +265,8 @@
       "dev": true,
       "requires": {
         "arrify": "1.0.1",
-        "chalk": "2.1.0",
+        "chalk": "2.3.0",
-        "diff": "3.3.1",
+        "diff": "3.4.0",
         "make-error": "1.3.0",
         "minimist": "1.2.0",
         "mkdirp": "0.5.1",
@@ -189,9 +287,9 @@
       }
     },
     "typescript": {
-      "version": "2.5.2",
+      "version": "2.6.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-2.5.2.tgz",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-2.6.2.tgz",
-      "integrity": "sha1-A4qV99m7tCCxvzW6MdTFwd0//jQ=",
+      "integrity": "sha1-PFtv1/beCRQmkCfwPAlGdY92c6Q=",
       "dev": true
     },
     "user-home": {
@@ -209,6 +307,12 @@
         "user-home": "1.1.1"
       }
     },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "dev": true
+    },
     "yn": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/yn/-/yn-2.0.0.tgz",

package.json

@@ -1,18 +1,20 @@
 {
   "license": "Apache-2.0",
+  "dependencies": {
+    "@types/node": "^8.0.53",
+    "binaryen": "39.0.0-nightly.20171116"
+  },
   "devDependencies": {
     "@types/chalk": "^0.4.31",
     "@types/diff": "^3.2.2",
+    "@types/glob": "^5.0.33",
     "@types/long": "^3.0.32",
-    "chalk": "^2.1.0",
+    "chalk": "^2.3.0",
-    "diff": "^3.3.1",
+    "diff": "^3.4.0",
+    "glob": "^7.1.2",
     "long": "^3.2.0",
     "ts-node": "^3.3.0",
-    "typescript": "^2.5.2"
+    "typescript": "^2.6.2"
-  },
-  "dependencies": {
-    "@types/node": "^8.0.28",
-    "binaryen": "39.0.0-nightly.20171116"
   },
   "scripts": {
     "build": "tsc -P src",

src/ast.ts

@@ -1257,7 +1257,6 @@ export class ExpressionStatement extends Statement {
 
   serialize(sb: string[]): void {
     this.expression.serialize(sb);
-    sb.push(";");
   }
 }
 

src/compiler.ts

@@ -1,6 +1,6 @@
 import { PATH_DELIMITER } from "./constants";
 import { DiagnosticCode, DiagnosticMessage, DiagnosticEmitter } from "./diagnostics";
-import { Module, ModuleRef, MemorySegment, ExpressionRef, UnaryOp, BinaryOp, HostOp, NativeType, FunctionTypeRef, FunctionRef, ImportRef, ExportRef, GlobalRef, Relooper } from "./module";
+import { Module, MemorySegment, ExpressionRef, UnaryOp, BinaryOp, NativeType, FunctionTypeRef } from "./module";
 import { Program, ClassPrototype, Class, Element, ElementKind, Enum, FunctionPrototype, Function, Global, Local, Namespace, Parameter } from "./program";
 import { CharCode, I64, U64, normalizePath, sb } from "./util";
 import { Token, Range } from "./tokenizer";

src/parser.ts

@@ -212,7 +212,7 @@ export class Parser extends DiagnosticEmitter {
     return this.program;
   }
 
-  parseType(tn: Tokenizer, acceptParenthesized: bool = true): TypeNode | null {
+  parseType(tn: Tokenizer, acceptParenthesized: bool = true, suppressErrors: bool = false): TypeNode | null {
     // not TypeScript-compatible
     const token: Token = tn.next();
     const startPos: i32 = tn.tokenPos;
@@ -225,11 +225,12 @@ export class Parser extends DiagnosticEmitter {
 
     // ( ... )
     if (acceptParenthesized && token == Token.OPENPAREN) {
-      const innerType: TypeNode | null = this.parseType(tn, false);
+      const innerType: TypeNode | null = this.parseType(tn, false, suppressErrors);
       if (!innerType)
         return null;
       if (!tn.skip(Token.CLOSEPAREN)) {
-        this.error(DiagnosticCode._0_expected, tn.range(tn.pos), "}");
+        if (!suppressErrors)
+          this.error(DiagnosticCode._0_expected, tn.range(tn.pos), "}");
         return null;
       }
       type = innerType;
@@ -264,7 +265,8 @@ export class Parser extends DiagnosticEmitter {
           parameters.push(<TypeNode>parameter);
         } while (tn.skip(Token.COMMA));
         if (!tn.skip(Token.GREATERTHAN)) {
-          this.error(DiagnosticCode._0_expected, tn.range(tn.pos), ">");
+          if (!suppressErrors)
+            this.error(DiagnosticCode._0_expected, tn.range(tn.pos), ">");
           return null;
         }
       }
@@ -273,21 +275,24 @@ export class Parser extends DiagnosticEmitter {
         if (tn.skip(Token.NULL)) {
           nullable = true;
         } else {
-          this.error(DiagnosticCode._0_expected, tn.range(tn.pos), "null");
+          if (!suppressErrors)
+            this.error(DiagnosticCode._0_expected, tn.range(tn.pos), "null");
           return null;
         }
       }
       type = TypeNode.create(identifier, parameters, nullable, tn.range(startPos, tn.pos));
 
     } else {
-      this.error(DiagnosticCode.Identifier_expected, tn.range());
+      if (!suppressErrors)
+        this.error(DiagnosticCode.Identifier_expected, tn.range());
       return null;
     }
     // ... [][]
     while (tn.skip(Token.OPENBRACKET)) {
       let bracketStart: i32 = tn.tokenPos;
       if (!tn.skip(Token.CLOSEBRACKET)) {
-        this.error(DiagnosticCode._0_expected, tn.range(), "]");
+        if (!suppressErrors)
+          this.error(DiagnosticCode._0_expected, tn.range(), "]");
         return null;
       }
       const bracketRange = tn.range(bracketStart, tn.pos);
@@ -298,7 +303,8 @@ export class Parser extends DiagnosticEmitter {
         if (tn.skip(Token.NULL)) {
           nullable = true;
         } else {
-          this.error(DiagnosticCode._0_expected, tn.range(), "null");
+          if (!suppressErrors)
+            this.error(DiagnosticCode._0_expected, tn.range(), "null");
           return null;
         }
       }
@@ -999,26 +1005,36 @@ export class Parser extends DiagnosticEmitter {
     // at 'for': '(' Statement? Expression? ';' Expression? ')' Statement
     const startPos: i32 = tn.tokenPos;
     if (tn.skip(Token.OPENPAREN)) {
-      const initializer: Statement | null = this.parseStatement(tn); // skips the semicolon (actually an expression)
+      let initializer: Statement | null = null;
-      if (!initializer)
+      if (tn.skip(Token.LET) || tn.skip(Token.CONST) || tn.skip(Token.VAR)) {
-        return null;
+        initializer = this.parseVariable(tn, /* TODO */ createModifiers());
-      if (initializer.kind != NodeKind.EXPRESSION && initializer.kind != NodeKind.VARIABLE)
+      } else if (!tn.skip(Token.SEMICOLON)) {
-        this.error(DiagnosticCode.Expression_expected, initializer.range); // recoverable
+        initializer = this.parseExpressionStatement(tn);
-      if (tn.token == Token.SEMICOLON) {
+        if (!initializer)
-        const condition: Expression | null = this.parseExpression(tn);
-        if (!condition)
           return null;
-        if (tn.skip(Token.SEMICOLON)) {
+      }
-          const incrementor: Expression | null = this.parseExpression(tn);
+      if (tn.token == Token.SEMICOLON) {
-          if (!incrementor)
+        let condition: ExpressionStatement | null = null;
+        if (!tn.skip(Token.SEMICOLON)) {
+          condition = this.parseExpressionStatement(tn);
+          if (!condition)
             return null;
-          if (tn.skip(Token.CLOSEPAREN)) {
+        }
-            const statement: Statement | null = this.parseStatement(tn);
+        if (tn.token == Token.SEMICOLON) {
-            if (!statement)
+          let incrementor: Expression | null = null;
+          if (!tn.skip(Token.CLOSEPAREN)) {
+            incrementor = this.parseExpression(tn);
+            if (!incrementor)
               return null;
-            return Statement.createFor(initializer, condition, incrementor, statement, tn.range(startPos, tn.pos));
+            if (!tn.skip(Token.CLOSEPAREN)) {
-          } else
+              this.error(DiagnosticCode._0_expected, tn.range(), ")");
-            this.error(DiagnosticCode._0_expected, tn.range(), ")");
+              return null;
+            }
+          }
+          const statement: Statement | null = this.parseStatement(tn);
+          if (!statement)
+            return null;
+          return Statement.createFor(initializer, condition ? condition.expression : null, incrementor, statement, tn.range(startPos, tn.pos));
         } else
           this.error(DiagnosticCode._0_expected, tn.range(), ";");
       } else
@@ -1225,6 +1241,7 @@ export class Parser extends DiagnosticEmitter {
   parseExpressionPrefix(tn: Tokenizer): Expression | null {
     const token: Token = tn.next();
     const startPos: i32 = tn.tokenPos;
+    let expr: Expression | null = null;
 
     if (token == Token.NULL)
       return Expression.createNull(tn.range());
@@ -1248,10 +1265,10 @@ export class Parser extends DiagnosticEmitter {
           if (tn.skip(Token.OPENPAREN)) {
             if (tn.peek() != Token.CLOSEPAREN) {
               do {
-                const expr: Expression | null = this.parseExpression(tn, Precedence.COMMA + 1);
+                expr = this.parseExpression(tn, Precedence.COMMA + 1);
                 if (!expr)
                   return null;
-                args.push(<Expression>expr);
+                args.push(expr);
               } while (tn.skip(Token.COMMA));
             }
             if (!tn.skip(Token.CLOSEPAREN)) {
@@ -1277,7 +1294,7 @@ export class Parser extends DiagnosticEmitter {
 
       // ParenthesizedExpression
       case Token.OPENPAREN: {
-        const expr: Expression | null = this.parseExpression(tn);
+        expr = this.parseExpression(tn);
         if (!expr)
           return null;
         if (!tn.skip(Token.CLOSEPAREN)) {
@@ -1292,7 +1309,6 @@ export class Parser extends DiagnosticEmitter {
         const elementExpressions: (Expression | null)[] = new Array();
         if (!tn.skip(Token.CLOSEBRACKET)) {
           do {
-            let expr: Expression | null;
             if (tn.peek() == Token.COMMA || tn.peek() == Token.CLOSEBRACKET)
               expr = null; // omitted
             else {
@@ -1319,7 +1335,7 @@ export class Parser extends DiagnosticEmitter {
           this.error(DiagnosticCode._0_expected, tn.range(), ">");
           return null;
         }
-        const expr: Expression | null = this.parseExpressionPrefix(tn);
+        expr = this.parseExpressionPrefix(tn);
         if (!expr)
           return null;
         return Expression.createAssertion(AssertionKind.PREFIX, <Expression>expr, <TypeNode>toType, tn.range(startPos, tn.pos));
@@ -1359,7 +1375,7 @@ export class Parser extends DiagnosticEmitter {
 
     const typeArguments: TypeNode[] = [];
     do {
-      const type: TypeNode | null = this.parseType(tn);
+      const type: TypeNode | null = this.parseType(tn, true, true);
       if (!type) {
         tn.reset();
         return null;

tests/parser/fixtures/do.ts

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

tests/parser/fixtures/for.ts

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

tests/parser/fixtures/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/fixtures/while.ts

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

tests/parser/index.ts

@@ -1,12 +1,15 @@
 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 files = fs.readdirSync(__dirname + "/fixtures");
+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;