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// 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 PreparseData extends HeapObject {
// TODO(v8:8983): Add declaration for variable-sized region.
data_length: int32;
children_length: int32;
}
extern class InterpreterData extends Struct {
bytecode_array: BytecodeArray;
@if(V8_EXTERNAL_CODE_SPACE) interpreter_trampoline: CodeDataContainer;
@ifnot(V8_EXTERNAL_CODE_SPACE) interpreter_trampoline: Code;
}
@generatePrint
extern class BaselineData extends Struct {
@if(V8_EXTERNAL_CODE_SPACE) baseline_code: CodeDataContainer;
@ifnot(V8_EXTERNAL_CODE_SPACE) baseline_code: Code;
data: BytecodeArray|InterpreterData;
}
type FunctionKind extends uint8 constexpr 'FunctionKind';
type FunctionSyntaxKind extends uint8 constexpr 'FunctionSyntaxKind';
type BailoutReason extends uint8 constexpr 'BailoutReason';
bitfield struct SharedFunctionInfoFlags extends uint32 {
// Have FunctionKind first to make it cheaper to access.
function_kind: FunctionKind: 5 bit;
is_native: bool: 1 bit;
is_strict: bool: 1 bit;
function_syntax_kind: FunctionSyntaxKind: 3 bit;
is_class_constructor: bool: 1 bit;
has_duplicate_parameters: bool: 1 bit;
allow_lazy_compilation: bool: 1 bit;
is_asm_wasm_broken: bool: 1 bit;
function_map_index: uint32: 5 bit;
disabled_optimization_reason: BailoutReason: 4 bit;
requires_instance_members_initializer: bool: 1 bit;
construct_as_builtin: bool: 1 bit;
name_should_print_as_anonymous: bool: 1 bit;
has_reported_binary_coverage: bool: 1 bit;
is_top_level: bool: 1 bit;
properties_are_final: bool: 1 bit;
private_name_lookup_skips_outer_class: bool: 1 bit;
}
bitfield struct SharedFunctionInfoFlags2 extends uint8 {
class_scope_has_private_brand: bool: 1 bit;
has_static_private_methods_or_accessors: bool: 1 bit;
}
@export
@customCppClass
@customMap // Just to place the map at the beginning of the roots array.
class SharedFunctionInfo extends HeapObject {
// function_data field is treated as a custom weak pointer. We visit this
// field as a weak pointer if there is aged bytecode. If there is no bytecode
// or if the bytecode is young then we treat it as a strong pointer. This is
// done to support flushing of bytecode.
weak function_data: Object;
name_or_scope_info: String|NoSharedNameSentinel|ScopeInfo;
outer_scope_info_or_feedback_metadata: HeapObject;
script_or_debug_info: Script|DebugInfo|Undefined;
// [length]: The function length - usually the number of declared parameters.
// Use up to 2^16-2 parameters (16 bits of values, where one is reserved for
// kDontAdaptArgumentsSentinel). The value is only reliable when the function
// has been compiled.
length: int16;
formal_parameter_count: uint16;
function_token_offset: uint16;
// [expected_nof_properties]: Expected number of properties for the
// function. The value is only reliable when the function has been compiled.
expected_nof_properties: uint8;
flags2: SharedFunctionInfoFlags2;
flags: SharedFunctionInfoFlags;
// [function_literal_id] - uniquely identifies the FunctionLiteral this
// SharedFunctionInfo represents within its script, or -1 if this
// SharedFunctionInfo object doesn't correspond to a parsed FunctionLiteral.
function_literal_id: int32;
// [unique_id] - For --log-maps purposes, an identifier that's persistent
// even if the GC moves this SharedFunctionInfo.
@if(V8_SFI_HAS_UNIQUE_ID) unique_id: int32;
}
@abstract
@export
@customCppClass
class UncompiledData extends HeapObject {
inferred_name: String;
start_position: int32;
end_position: int32;
}
@export
@customCppClass
class UncompiledDataWithoutPreparseData extends UncompiledData {
}
@export
@customCppClass
class UncompiledDataWithPreparseData extends UncompiledData {
preparse_data: PreparseData;
}
@export
class OnHeapBasicBlockProfilerData extends HeapObject {
block_ids: ByteArray; // Stored as 4-byte ints
counts: ByteArray; // Stored as 4-byte unsigned ints
name: String;
schedule: String;
code: String;
hash: Smi;
}
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