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Add HermesInternal.getFunctionLocation
Summary: Adds a new internal method, `HermesInternal.getFunctionLocation(f)`, which returns an object describing the source location (debug info / bytecode offset) of the function `f`. Reviewed By: jbower-fb Differential Revision: D18856943 fbshipit-source-id: d520c63274c4b537b38dfdfe13ba42c9fee2d2bb
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| /** | ||
| * Copyright (c) Facebook, Inc. and its affiliates. | ||
| * | ||
| * This source code is licensed under the MIT license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| */ | ||
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| // RUN: %hermes -g %s \ | ||
| // RUN: | %FileCheck --match-full-lines %s -check-prefix JS | ||
| // RUN: %hermes -O -emit-binary -output-source-map -out %t.hbc %s && %hermes %t.hbc \ | ||
| // RUN: | %FileCheck --match-full-lines %s -check-prefix BC | ||
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| "use strict"; | ||
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| function fn1() {} | ||
| print(loc(fn1).fileName); | ||
| // JS: {{.+}}/hermes-internal-get-function-location.js | ||
| // BC: undefined | ||
| print(loc(fn1).lineNumber); | ||
| // JS: [[@LINE-5]] | ||
| // BC: undefined | ||
| print(loc(fn1).columnNumber); | ||
| // JS-NEXT: 16 | ||
| // BC-NEXT: undefined | ||
| print(loc(fn1).cjsModuleOffset); | ||
| // JS-NEXT: undefined | ||
| // BC-NEXT: 0 | ||
| print(loc(fn1).virtualOffset); | ||
| // JS-NEXT: undefined | ||
| // BC-NEXT: [[FN1OFFSET:[0-9]+]] | ||
| print(loc(fn1).isNative); | ||
| // JS-NEXT: false | ||
| // BC-NEXT: false | ||
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| const fn1Bound = fn1.bind(null); | ||
| print(loc(fn1Bound).fileName); | ||
| // JS-NEXT: {{.+}}/hermes-internal-get-function-location.js | ||
| // BC-NEXT: undefined | ||
| print(loc(fn1Bound).lineNumber); | ||
| // JS: [[@LINE-25]] | ||
| // BC-NEXT: undefined | ||
| print(loc(fn1Bound).columnNumber); | ||
| // JS-NEXT: 16 | ||
| // BC-NEXT: undefined | ||
| print(loc(fn1Bound).cjsModuleOffset); | ||
| // JS-NEXT: undefined | ||
| // BC-NEXT: 0 | ||
| print(loc(fn1Bound).virtualOffset); | ||
| // JS-NEXT: undefined | ||
| // BC-NEXT: [[FN1OFFSET]] | ||
| print(loc(fn1Bound).isNative); | ||
| // JS-NEXT: false | ||
| // BC-NEXT: false | ||
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| print(loc(Object).fileName); | ||
| // JS-NEXT: undefined | ||
| // BC-NEXT: undefined | ||
| print(loc(Object).lineNumber); | ||
| // JS-NEXT: undefined | ||
| // BC-NEXT: undefined | ||
| print(loc(Object).columnNumber); | ||
| // JS-NEXT: undefined | ||
| // BC-NEXT: undefined | ||
| print(loc(Object).cjsModuleOffset); | ||
| // JS-NEXT: undefined | ||
| // BC-NEXT: undefined | ||
| print(loc(Object).virtualOffset); | ||
| // JS-NEXT: undefined | ||
| // BC-NEXT: undefined | ||
| print(loc(Object).isNative) | ||
| // JS-NEXT: true | ||
| // BC-NEXT: true | ||
|
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| const fn2 = eval('(x => x()) \n//# sourceURL=dummy'); | ||
| print(loc(fn2).fileName); | ||
| // JS-NEXT: dummy | ||
| // BC-NEXT: dummy | ||
| print(loc(fn2).lineNumber); | ||
| // JS-NEXT: 1 | ||
| // BC-NEXT: 1 | ||
| print(loc(fn2).columnNumber); | ||
| // JS-NEXT: 2 | ||
| // BC-NEXT: 2 | ||
| print(loc(fn2).cjsModuleOffset); | ||
| // JS-NEXT: undefined | ||
| // BC-NEXT: undefined | ||
| print(loc(fn2).virtualOffset); | ||
| // JS-NEXT: undefined | ||
| // BC-NEXT: undefined | ||
| print(loc(fn2).isNative); | ||
| // JS-NEXT: false | ||
| // BC-NEXT: false | ||
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| try { loc(); } catch(e) { print(e.message); } | ||
| // JS-NEXT: Argument to HermesInternal.getFunctionLocation must be callable | ||
| // BC-NEXT: Argument to HermesInternal.getFunctionLocation must be callable | ||
| try { loc({}); } catch(e) { print(e.message); } | ||
| // JS-NEXT: Argument to HermesInternal.getFunctionLocation must be callable | ||
| // BC-NEXT: Argument to HermesInternal.getFunctionLocation must be callable | ||
| try { loc(Math.PI); } catch(e) { print(e.message); } | ||
| // JS-NEXT: Argument to HermesInternal.getFunctionLocation must be callable | ||
| // BC-NEXT: Argument to HermesInternal.getFunctionLocation must be callable | ||
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| function loc(f) { return HermesInternal.getFunctionLocation(f); } |