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v8/test/debugger/debug
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Simon Zünd fbcc2e874d Introduce REPL mode 
Design doc: bit.ly/v8-repl-mode

This CL adds a new REPL mode that can be used via
DebugEvaluate::GlobalREPL. REPL mode only implements re-declaration
of 'let' bindings at the moment. Example:

REPL Input 1: let x = 21;
REPL Input 2: let x = 42;

This would normally throw a SyntaxError, but works in REPL mode.

The implementation is done by:
  - Setting a 'repl mode' bit on {Script}, {ScopeInfo}, {ParseInfo}
    and script {Scope}.
  - Each global let declaration still gets a slot reserved in the
    respective {ScriptContext}.
  - When a new REPL mode {ScriptContext} is created, name clashes
    for let bindings are not reported as errors.
  - Declarations, loads and stores for global let in REPL mode are
    now "load/store global" instead of accessing their respective
    context slot directly. This causes a lookup in the ScriptContextTable
    where the found slot for each name is guaranteed to be the same
    (the first one).

Bug: chromium:1004193, chromium:1018158
Change-Id: Ia6ab526b9f696400dbb8bfb611a4d43606119a47
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1876061
Commit-Queue: Simon Zünd <szuend@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64793}
2019-11-06 09:17:04 +00:00
..
compiler Reland "[Test] Update tests to work with lazy feedback allocation." 2019-05-08 12:51:13 +00:00
es6 Reland "[Heap] Create a fast path for young allocations." 2019-09-16 13:25:51 +00:00
es8 Replace %RunMicrotasks with %PerformMicrotaskCheckpoint 2018-12-06 11:10:18 +00:00
harmony [test] Remove module pragma in favor of .mjs 2019-06-27 13:25:48 +00:00
ignition [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
regress [cleanup] Add %PrepareFunctionForOptimize for tests that use %OptimizeOsr 2019-06-18 16:47:29 +00:00
side-effect Reland "[debug] Mark toLocaleString and TA#join builtins as side-effect free." 2019-04-02 18:47:12 +00:00
wasm [wasm] merge js constants file in module-builder 2019-01-30 22:10:34 +00:00
debug-allscopes-on-debugger.js [inspector] improve return position of explicit return in non-async function 2017-07-14 19:10:13 +00:00
debug-backtrace.js [tests] Fix assertFalse(exception) anti-pattern 2018-03-21 10:59:46 +00:00
debug-bigint.js Remove always-true --harmony-bigint runtime flag 2018-10-01 11:31:13 +00:00
debug-break-class-fields.js [class] Make class field initializers breakable in the debugger 2018-09-17 22:25:44 +00:00
debug-break-inline.js [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
debug-break-microtask.js [debug] add microtask-related tests. 2017-10-03 12:56:17 +00:00
debug-break-native.js [debug] retire ScriptWrapper 2018-07-05 21:33:03 +00:00
debug-break-return.js [debug] removed most debugger js 2018-06-03 06:02:59 +00:00
debug-breakpoints.js [debug-wrapper] Further extend the debug wrapper 2016-11-16 08:34:44 +00:00
debug-clearbreakpoint.js [tests] Fix assertFalse(exception) anti-pattern 2018-03-21 10:59:46 +00:00
debug-compile-event.js [tests] Fix assertFalse(exception) anti-pattern 2018-03-21 10:59:46 +00:00
debug-compile-optimized.js [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
debug-conditional-breakpoints.js [debug-wrapper] Migrate more tests 2016-11-22 12:44:18 +00:00
debug-constructor.js [debugger] Stepping and break-related functions in wrapper 2016-11-08 13:54:37 +00:00
debug-enable-disable-breakpoints.js [debug-wrapper] Further extend the debug wrapper 2016-11-16 08:34:44 +00:00
debug-eval-scope.js [debug] Add Eval scope type to inspector protocol 2016-11-23 07:30:23 +00:00
debug-evaluate-arguments.js [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
debug-evaluate-bool-constructor.js [tests] Fix assertFalse(exception) anti-pattern 2018-03-21 10:59:46 +00:00
debug-evaluate-closure.js [debugger] remove debugger statement support from FCG/CS. 2017-02-22 08:45:09 +00:00
debug-evaluate-dead-function-fails.js [parser] Allow declaring variables without a proxy 2019-01-25 09:10:59 +00:00
debug-evaluate-declaration.js [debug-wrapper] Conditional breaks, locals, evaluate, scopes 2016-11-11 12:08:34 +00:00
debug-evaluate-function-var.js Reland "[debugger] Expose reference to the function in debug-evaluate" 2019-06-27 06:09:22 +00:00
debug-evaluate-local-repl-hole.js Introduce REPL mode 2019-11-06 09:17:04 +00:00
debug-evaluate-locals-capturing.js Reland "[Compiler] Remove CompileDebugCode and EnsureBytecode and replace with Compile" 2017-08-17 13:21:44 +00:00
debug-evaluate-locals-optimized-double.js [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
debug-evaluate-locals-optimized.js [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
debug-evaluate-locals.js [tests] Fix assertFalse(exception) anti-pattern 2018-03-21 10:59:46 +00:00
debug-evaluate-modify-catch-block-scope.js [parser] Allow declaring variables without a proxy 2019-01-25 09:10:59 +00:00
debug-evaluate-modify-this.js
debug-evaluate-nested-let.js Use --opt instead of --crankshaft in tests. 2017-04-28 14:20:39 +00:00
debug-evaluate-repl-mode-optimized.js Introduce REPL mode 2019-11-06 09:17:04 +00:00
debug-evaluate-repl-mode.js Introduce REPL mode 2019-11-06 09:17:04 +00:00
debug-evaluate-shadowed-context-2.js
debug-evaluate-shadowed-context-3.js Change debug-evaluate from a whitelist to a blacklist approach 2019-09-11 07:52:45 +00:00
debug-evaluate-shadowed-context.js [debug-wrapper] Migrate more tests 2016-11-22 12:44:18 +00:00
debug-evaluate-with.js [tests] Fix assertFalse(exception) anti-pattern 2018-03-21 10:59:46 +00:00
debug-evaluate.js [tests] Fix assertFalse(exception) anti-pattern 2018-03-21 10:59:46 +00:00
debug-event-listener.js [debug-wrapper] Add caught/uncaught to exception pauses 2016-11-10 09:05:29 +00:00
debug-exceptions.js [debug-wrapper] Add caught/uncaught to exception pauses 2016-11-10 09:05:29 +00:00
debug-function-scopes.js [debug-wrapper] Migrate more tests 2016-11-22 12:44:18 +00:00
debug-generator-break-on-stack.js
debug-generator-break.js
debug-liveedit-1.js [debug] migrate all liveedit tests to use LiveEdit::PatchScript 2018-06-21 15:34:16 +00:00
debug-liveedit-2.js [debug] migrate all liveedit tests to use LiveEdit::PatchScript 2018-06-21 15:34:16 +00:00
debug-liveedit-3.js [debug] migrate all liveedit tests to use LiveEdit::PatchScript 2018-06-21 15:34:16 +00:00
debug-liveedit-4.js [debug] migrate all liveedit tests to use LiveEdit::PatchScript 2018-06-21 15:34:16 +00:00
debug-liveedit-arrow-function-at-start.js [liveedit] Fix patching functions with start position zero 2018-07-18 16:20:22 +00:00
debug-liveedit-check-stack.js [debug] migrate all liveedit tests to use LiveEdit::PatchScript 2018-06-21 15:34:16 +00:00
debug-liveedit-compile-error.js [debug] migrate all liveedit tests to use LiveEdit::PatchScript 2018-06-21 15:34:16 +00:00
debug-liveedit-double-call.js [debug] retire ScriptWrapper 2018-07-05 21:33:03 +00:00
debug-liveedit-exceptions.js [debug] migrate all liveedit tests to use LiveEdit::PatchScript 2018-06-21 15:34:16 +00:00
debug-liveedit-inline.js [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
debug-liveedit-literals.js [debug] migrate all liveedit tests to use LiveEdit::PatchScript 2018-06-21 15:34:16 +00:00
debug-liveedit-newsource.js [debug] migrate all liveedit tests to use LiveEdit::PatchScript 2018-06-21 15:34:16 +00:00
debug-liveedit-patch-positions-replace.js [debug] migrate all liveedit tests to use LiveEdit::PatchScript 2018-06-21 15:34:16 +00:00
debug-liveedit-recursion.js [test] Rename debugger test 2018-09-14 11:17:04 +00:00
debug-liveedit-replace-code.js [debug] migrate all liveedit tests to use LiveEdit::PatchScript 2018-06-21 15:34:16 +00:00
debug-liveedit-restart-frame.js [ignition/turbo] Perform liveness analysis on the bytecodes 2016-11-29 12:27:15 +00:00
debug-liveedit-stepin.js Reland "[debug] liveedit in native" 2018-07-03 21:01:57 +00:00
debug-materialized.js [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
debug-modules-set-variable-value.mjs [test] Remove module pragma in favor of .mjs 2019-06-27 13:25:48 +00:00
debug-multiple-breakpoints.js [debug-wrapper] Migrate more tests 2016-11-22 12:44:18 +00:00
debug-multiple-var-decl.js [inspector] improve return position of explicit return in non-async function 2017-07-14 19:10:13 +00:00
debug-negative-break-points.js [debug-wrapper] Migrate more tests 2016-11-22 12:44:18 +00:00
debug-optimize.js [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
debug-print.js [elements] Rename FAST elements kinds 2017-06-30 13:31:44 +00:00
debug-receiver.js Fix common misspellings 2017-08-02 09:35:28 +00:00
debug-return-value.js [tests] Fix assertFalse(exception) anti-pattern 2018-03-21 10:59:46 +00:00
debug-scopes-suspended-generators.js [turbofan] Only save live registers on suspend 2018-02-07 18:07:30 +00:00
debug-scopes.js [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
debug-set-variable-value.js [debugger] remove debugger statement support from FCG/CS. 2017-02-22 08:45:09 +00:00
debug-stack-check-position.js
debug-step-2.js
debug-step-3.js
debug-step-4.js
debug-step-end-of-script.js Reland "[inspector] fixed location of top level function return" 2018-06-18 21:37:49 +00:00
debug-step-into-json.js [inspector] improve return position of explicit return in non-async function 2017-07-14 19:10:13 +00:00
debug-step-into-valueof.js [inspector] improve return position of explicit return in non-async function 2017-07-14 19:10:13 +00:00
debug-step-microtask.js Reland "[inspector] fixed location of top level function return" 2018-06-18 21:37:49 +00:00
debug-step-stub-callfunction.js
debug-step-turbofan.js [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
debug-step.js [debugger] correctly annotate scripts with debug id. 2017-03-13 09:13:43 +00:00
debug-stepin-accessor-ic.js
debug-stepin-accessor.js [tests] Async test framework 2017-07-26 17:40:15 +00:00
debug-stepin-builtin-callback-opt.js [inspector] improve return position of explicit return in non-async function 2017-07-14 19:10:13 +00:00
debug-stepin-builtin-callback.js
debug-stepin-builtin.js
debug-stepin-call-function-stub.js
debug-stepin-construct-call.js
debug-stepin-constructor.js
debug-stepin-foreach.js [inspector] improve return position of explicit return in non-async function 2017-07-14 19:10:13 +00:00
debug-stepin-function-call.js
debug-stepin-property-function-call.js [tests] Async test framework 2017-07-26 17:40:15 +00:00
debug-stepnext-do-while.js
debug-stepout-recursive-function.js
debug-stepout-scope-part1.js
debug-stepout-scope-part2.js
debug-stepout-scope-part3.js
debug-stepout-scope-part4.js
debug-stepout-scope-part5.js
debug-stepout-scope-part6.js
debug-stepout-scope-part7.js
debug-stepout-scope-part8.js
debug-stepout-to-builtin.js
deserialize-script-id.js [debug] retire ScriptWrapper 2018-07-05 21:33:03 +00:00
for-in-opt.js [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
function-source.js [debug-wrapper] clearAllBreakPoints and several scripts functions 2016-11-17 09:34:18 +00:00
lazy-deopt-then-flush-bytecode.js [Test] Add PrepareForOptimization to debugger/ tests. 2019-04-29 13:47:16 +00:00
regress-3225.js [parser] Allow declaring variables without a proxy 2019-01-25 09:10:59 +00:00
regress-5207.js [ignition/turbo] Perform liveness analysis on the bytecodes 2016-11-29 12:27:15 +00:00