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Unified Diff: test/mjsunit/es8/syntactic-tail-call-parsing.js

Issue 1928203002: [es8] More spec compliant syntactic tail calls implementation. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Some STC tests ported for PTC Created 4 years, 7 months ago
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Index: test/mjsunit/es8/syntactic-tail-call-parsing.js
diff --git a/test/mjsunit/es8/syntactic-tail-call-parsing.js b/test/mjsunit/es8/syntactic-tail-call-parsing.js
new file mode 100644
index 0000000000000000000000000000000000000000..818e2b0b00633aeef7225383314f906ce7447ab2
--- /dev/null
+++ b/test/mjsunit/es8/syntactic-tail-call-parsing.js
@@ -0,0 +1,369 @@
+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax --harmony-explicit-tailcalls
+// Flags: --harmony-do-expressions
+
+var SyntaxErrorTests = [
+ { msg: "Unexpected expression inside tail call",
+ tests: [
+ { src: `()=>{ return continue foo ; }`,
+ err: ` ^^^`,
+ },
+ { src: `()=>{ return continue 42 ; }`,
+ err: ` ^^`,
+ },
+ { src: `()=>{ return continue new foo () ; }`,
+ err: ` ^^^^^^^^^^`,
+ },
+ { src: `()=>{ loop: return continue loop ; }`,
+ err: ` ^^^^`,
+ },
+ { src: `class A { foo() { return continue super.x ; } }`,
+ err: ` ^^^^^^^`,
+ },
+ { src: `()=>{ return continue this ; }`,
+ err: ` ^^^^`,
+ },
+ { src: `()=>{ return continue class A {} ; }`,
+ err: ` ^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue class A extends B {} ; }`,
+ err: ` ^^^^^^^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue function A() { } ; }`,
+ err: ` ^^^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue { a: b, c: d} ; }`,
+ err: ` ^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue function* Gen() { yield 1; } ; }`,
+ err: ` ^^^^^^^^^^^^^^^^^^^^^^^^^^^^`,
+ },
+ { src: `function A() { return continue new.target ; }`,
+ err: ` ^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue () ; }`,
+ err: ` ^^`,
+ },
+ { src: `()=>{ return continue ( 42 ) ; }`,
+ err: ` ^^^^^^`,
+ },
+ { src: "()=>{ return continue `123 ${foo} 34lk` ; }",
+ err: ` ^^^^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue do { x ? foo() : bar() ; } }`,
+ err: ` ^^^^^^^^^^^^^^^^^^^^^^^^^^`,
+ },
+ ],
+ },
+ { msg: "Tail call expression is not allowed here",
+ tests: [
+ { src: `()=>{ return continue continue continue b() ; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue ( continue b() ) ; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue f() - a ; }`,
+ err: ` ^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return b + continue f() ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return 1, 2, 3, continue f() , 4 ; }`,
+ err: ` ^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ var x = continue f ( ) ; }`,
+ err: ` ^^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue f () ? 1 : 2 ; }`,
+ err: ` ^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return (1, 2, 3, continue f()), 4; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return [1, 2, continue f() ] ; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return [1, 2, ... continue f() ] ; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return [1, 2, continue f(), 3 ] ; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: "()=>{ return `123 ${a} ${ continue foo ( ) } 34lk` ; }",
+ err: ` ^^^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return g( 1, 2, continue f() ); }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue f() || a; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return a || b || c || continue f() || d; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return a && b && c && continue f() && d; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return a && b || c && continue f() ? d : e; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return a ? b : c && continue f() && d || e; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue foo() instanceof bar ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return bar instanceof continue foo() ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue foo() in bar ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return bar in continue foo() ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ function* G() { yield continue foo(); } }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ (1, 2, 3, continue f() ) => {} }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ (... continue f()) => {} }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ (a, b, c, ... continue f() ) => {} }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return a <= continue f(); }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return b > continue f(); }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return a << continue f(); }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return b >> continue f(); }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return c >>> continue f(); }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue f() = a ; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return a = continue f() ; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return a += continue f(); }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return a ** continue f() ; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return delete continue foo() ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ typeof continue foo() ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return ~ continue foo() ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return void continue foo() ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return !continue foo() ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return -continue foo() ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return +continue foo() ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return ++ continue f( ) ; }`,
+ err: ` ^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue f() ++; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return continue f() --; }`,
+ err: ` ^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ return (continue foo()) () ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ for (var i = continue foo(); i < 10; i++) bar(); }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ for (var i = 0; i < continue foo(); i++) bar(); }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ for (var i = 0; i < 10; continue foo()) bar(); }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ if (continue foo()) bar(); }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ while (continue foo()) bar(); }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ do { smth; } while (continue foo()) ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ throw continue foo() ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ switch (continue foo()) { case 1: break; } ; }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ with (continue foo()) { smth; } }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ let x = continue foo() }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ const c = continue foo() }`,
+ err: ` ^^^^^^^^^^^^^^^`,
+ },
+ { src: `class A {}; class B extends A { constructor() { return continue super () ; } }`,
+ err: ` ^^^^^^^^^^^^^^^^^`,
+ },
+ { src: `class A extends continue f () {}; }`,
+ err: ` ^^^^^^^^^^^^^`,
+ },
+ ],
+ },
+ { msg: "Tail call expression in try block",
+ tests: [
+ { src: `()=>{ try { return continue f ( ) ; } catch(e) {} }`,
+ err: ` ^^^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ try { try { smth; } catch(e) { return continue f( ) ; } }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ try { try { smth; } catch(e) { return continue f( ) ; } } finally { bla; } }`,
+ err: ` ^^^^^^^^^^^^^^`,
+ },
+ ],
+ },
+ { msg: "Tail call expression in catch block when finally block is also present",
+ tests: [
+ { src: `()=>{ try { smth; } catch(e) { return continue f ( ) ; } finally { blah; } }`,
+ err: ` ^^^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ try { smth; } catch(e) { try { smth; } catch (e) { return continue f ( ) ; } } finally { blah; } }`,
+ err: ` ^^^^^^^^^^^^^^^^`,
+ },
+ ],
+ },
+ { msg: "Tail call expression in for-in/of body",
+ tests: [
+ { src: `()=>{ for (var v in {a:0}) { return continue foo () ; } }`,
+ err: ` ^^^^^^^^^^^^^^^^`,
+ },
+ { src: `()=>{ for (var v of [1, 2, 3]) { return continue foo () ; } }`,
+ err: ` ^^^^^^^^^^^^^^^^`,
+ },
+ ],
+ },
+ { msg: "Undefined label 'foo'",
+ tests: [
+ { src: `()=>{ continue foo () ; }`,
+ err: ` ^^^`,
+ },
+ ],
+ },
+];
+
+
+// Should parse successfully.
+var NoErrorTests = [
+ `()=>{ return continue a.b.c.foo () ; }`,
+ `()=>{ return continue a().b.c().d.foo () ; }`,
+ `()=>{ return continue foo (1)(2)(3, 4) ; }`,
+ `()=>{ return ( continue b() ) ; }`,
+ "()=>{ return continue bar`ab cd ef` ; }",
+ "()=>{ return continue bar`ab ${cd} ef` ; }",
+ `()=>{ return a || continue f() ; }`,
+ `()=>{ return a && continue f() ; }`,
+ `()=>{ return a , continue f() ; }`,
+ `()=>{ function* G() { return continue foo(); } }`,
+ `()=>{ class A { foo() { return continue super.f() ; } } }`,
+ `()=>{ function B() { return continue new.target() ; } }`,
+ `()=>{ return continue do { x ? foo() : bar() ; }() }`,
+ `()=>{ return continue (do { x ? foo() : bar() ; })() }`,
+ `()=>{ return do { 1, continue foo() } }`,
+ `()=>{ return do { x ? continue foo() : y } }`,
+ `()=>{ return a || (b && continue c()); }`,
+ `()=>{ return a && (b || continue c()); }`,
+ `()=>{ return a || (b ? c : continue d()); }`,
+ `()=>{ return 1, 2, 3, a || (b ? c : continue d()); }`,
+ `()=> continue (foo ()) ;`,
+ `()=> a || continue foo () ;`,
+ `()=> a && continue foo () ;`,
+ `()=> a ? continue foo () : b;`,
+];
+
+
+(function() {
+ for (test_set of SyntaxErrorTests) {
+ var expected_message = "SyntaxError: " + test_set.msg;
+ for (test of test_set.tests) {
+ var passed = true;
+ var e = null;
+ try {
+ Realm.eval(0, test.src);
+ } catch (ee) {
+ e = ee;
+ }
+ print("=======================================");
+ print("Expected | " + expected_message);
+ print("Source | " + test.src);
+ print(" | " + test.err);
+
+ if (e === null) {
+ print("FAILED");
+ throw new Error("SyntaxError was not thrown");
+ }
+
+ var details = %GetExceptionDetails(e);
+ if (details.start_pos == undefined ||
+ details.end_pos == undefined) {
+ throw new Error("Bad message object returned");
+ }
+ var underline = " ".repeat(details.start_pos) +
+ "^".repeat(details.end_pos - details.start_pos);
+ var passed = expected_message === e.toString() &&
+ test.err === underline;
+
+ if (passed) {
+ print("PASSED");
+ print();
+ } else {
+ print("---------------------------------------");
+ print("Actual | " + e);
+ print("Source | " + test.src);
+ print(" | " + underline);
+ print("FAILED");
+ throw new Error("Test failed");
+ }
+ }
+ }
+})();
+
+
+(function() {
+ for (src of NoErrorTests) {
+ print("=======================================");
+ print("Source | " + src);
+ Realm.eval(0, src);
+ print("PASSED");
+ print();
+ }
+})();
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