// Copyright 2019 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.

extern class BreakPoint extends Struct {

id: Smi;

condition: String;

}

extern class BreakPointInfo extends Struct {

// The position in the source for the break position.

source_position: Smi;

// List of related JavaScript break points.

break_points: FixedArray|BreakPoint|Undefined;

}

bitfield struct DebugInfoFlags extends uint31 {

has_break_info: bool: 1 bit;

prepared_for_debug_execution: bool: 1 bit;

has_coverage_info: bool: 1 bit;

break_at_entry: bool: 1 bit;

can_break_at_entry: bool: 1 bit;

debug_execution_mode: bool: 1 bit;

}

bitfield struct DebuggerHints extends uint31 {

side_effect_state: int32: 2 bit;

debug_is_blackboxed: bool: 1 bit;

computed_debug_is_blackboxed: bool: 1 bit;

debugging_id: int32: 20 bit;

}

extern class DebugInfo extends Struct {

shared: SharedFunctionInfo;

// Bit field containing various information collected for debugging.

debugger_hints: SmiTagged<DebuggerHints>;

// Script field from shared function info.

script: Undefined|Script;

// The original uninstrumented bytecode array for functions with break

// points - the instrumented bytecode is held in the shared function info.

@cppAcquireLoad

@cppReleaseStore

original_bytecode_array: Undefined|BytecodeArray;

// The debug instrumented bytecode array for functions with break points

// - also pointed to by the shared function info.

@cppAcquireLoad

@cppReleaseStore

debug_bytecode_array: Undefined|BytecodeArray;

// Fixed array holding status information for each active break point.

break_points: FixedArray;

// A bitfield that lists uses of the current instance.

@cppRelaxedLoad @cppRelaxedStore flags: SmiTagged<DebugInfoFlags>;

coverage_info: CoverageInfo|Undefined;

}

@export

struct CoverageInfoSlot {

start_source_position: int32;

end_source_position: int32;

block_count: int32;

padding: int32; // Padding to make the index count 4.

}

// CoverageInfo's visitor is included in DATA_ONLY_VISITOR_ID_LIST, so it must

// not contain any HeapObject fields.

extern class CoverageInfo extends HeapObject {

const slot_count: int32;

slots[slot_count]: CoverageInfoSlot;

}