#include <decoder.h>

Inheritance diagram for v8::internal::wasm::Decoder:

Collaboration diagram for v8::internal::wasm::Decoder:

Classes
struct	FullValidationTag

struct	NoName

struct	NoValidationTag

Public Types
enum	TraceFlag : bool { kTrace = true , kNoTrace = false }

template<typename ValidationTag >
using	Name = std::conditional_t<ValidationTag::validate, const char*, NoName>

Public Member Functions
	Decoder (const uint8_t start, const uint8_t end, uint32_t buffer_offset=0)

	Decoder (const base::Vector< const uint8_t > bytes, uint32_t buffer_offset=0)

	Decoder (const uint8_t start, const uint8_t pc, const uint8_t *end, uint32_t buffer_offset=0)

virtual	~Decoder ()=default

template<typename ValidationTag >
uint8_t	read_u8 (const uint8_t *pc, Name< ValidationTag > msg="expected 1 byte")

template<typename ValidationTag >
uint16_t	read_u16 (const uint8_t *pc, Name< ValidationTag > msg="expected 2 bytes")

template<typename ValidationTag >
uint32_t	read_u32 (const uint8_t *pc, Name< ValidationTag > msg="expected 4 bytes")

template<typename ValidationTag >
uint64_t	read_u64 (const uint8_t *pc, Name< ValidationTag > msg="expected 8 bytes")

template<typename ValidationTag >
std::pair< uint32_t, uint32_t >	read_u32v (const uint8_t *pc, Name< ValidationTag > name="LEB32")

template<typename ValidationTag >
std::pair< int32_t, uint32_t >	read_i32v (const uint8_t *pc, Name< ValidationTag > name="signed LEB32")

template<typename ValidationTag >
std::pair< uint64_t, uint32_t >	read_u64v (const uint8_t *pc, Name< ValidationTag > name="LEB64")

template<typename ValidationTag >
std::pair< int64_t, uint32_t >	read_i64v (const uint8_t *pc, Name< ValidationTag > name="signed LEB64")

template<typename ValidationTag >
std::pair< int64_t, uint32_t >	read_i33v (const uint8_t *pc, Name< ValidationTag > name="signed LEB33")

template<typename ValidationTag >
std::pair< WasmOpcode, uint32_t >	read_prefixed_opcode (const uint8_t *pc, Name< ValidationTag > name="prefixed opcode")

uint8_t	consume_u8 (const char *name="uint8_t")

uint8_t	consume_u8 (const char name, ITracer tracer)

uint16_t	consume_u16 (const char *name="uint16_t")

uint32_t	consume_u32 (const char name, ITracer tracer)

uint32_t	consume_u32v (const char *name="var_uint32")

uint32_t	consume_u32v (const char name, ITracer tracer)

int32_t	consume_i32v (const char *name="var_int32")

uint64_t	consume_u64v (const char name, ITracer tracer)

int64_t	consume_i64v (const char *name="var_int64")

void	consume_bytes (uint32_t size, const char *name="skip")

void	consume_bytes (uint32_t size, const char name, ITracer tracer)

uint32_t	available_bytes () const

bool	checkAvailable (uint32_t size)

void V8_NOINLINE V8_PRESERVE_MOST	error (const char *msg)

void V8_NOINLINE V8_PRESERVE_MOST	error (const uint8_t pc, const char msg)

void V8_NOINLINE V8_PRESERVE_MOST	error (uint32_t offset, const char *msg)

template<typename... Args>
void V8_NOINLINE V8_PRESERVE_MOST	errorf (const char *format, Args... args)

template<typename... Args>
void V8_NOINLINE V8_PRESERVE_MOST	errorf (const uint8_t pc, const char format, Args... args)

template<typename... Args>
void V8_NOINLINE V8_PRESERVE_MOST	errorf (uint32_t offset, const char *format, Args... args)

virtual void	onFirstError ()

void	traceByteRange (const uint8_t start, const uint8_t end)

void	traceOffEnd ()

template<typename T , typename R = std::decay_t<T>>
Result< R >	toResult (T &&val)

void	Reset (const uint8_t start, const uint8_t end, uint32_t buffer_offset=0)

void	Reset (base::Vector< const uint8_t > bytes, uint32_t buffer_offset=0)

bool	ok () const

bool	failed () const

bool	more () const

const WasmError &	error () const

const uint8_t *	start () const

const uint8_t *	pc () const

uint32_t V8_INLINE	position () const

uint32_t V8_INLINE	pc_offset (const uint8_t *pc) const

uint32_t	pc_offset () const

uint32_t	buffer_offset () const

uint32_t	GetBufferRelativeOffset (uint32_t offset) const

const uint8_t *	end () const

void	set_end (const uint8_t *end)

bool	lookahead (int offset, uint8_t expected)

Static Public Attributes
static constexpr struct v8::internal::wasm::Decoder::NoValidationTag	kNoValidation = {}

static constexpr struct v8::internal::wasm::Decoder::FullValidationTag	kFullValidation = {}

Protected Attributes
const uint8_t *	start_

const uint8_t *	pc_

const uint8_t *	end_

uint32_t	buffer_offset_

WasmError	error_

Private Member Functions
void V8_NOINLINE	PRINTF_FORMAT (3, 4) verrorf(uint32_t offset

	va_start (args, format)

	va_end (args)

	CHECK_LT (0, len)

	onFirstError ()

template<typename IntType , typename ValidationTag >
IntType	read_little_endian (const uint8_t *pc, Name< ValidationTag > msg)

template<typename IntType , TraceFlag trace>
IntType	consume_little_endian (const char *name)

template<typename IntType , typename ValidationTag , TraceFlag trace, size_t size_in_bits = 8 * sizeof(IntType)>
V8_INLINE std::pair< IntType, uint32_t >	read_leb (const uint8_t *pc, Name< ValidationTag > name="varint")

template<typename IntType , typename ValidationTag , TraceFlag trace, size_t size_in_bits = 8 * sizeof(IntType)>
V8_NOINLINE V8_PRESERVE_MOST std::pair< IntType, uint32_t >	read_leb_slowpath (const uint8_t *pc, Name< ValidationTag > name)

template<typename IntType , typename ValidationTag , TraceFlag trace, size_t size_in_bits, int byte_index>
V8_INLINE std::pair< IntType, uint32_t >	read_leb_tail (const uint8_t *pc, Name< ValidationTag > name, IntType intermediate_result)

Private Attributes
void V8_NOINLINE const char *	format

void V8_NOINLINE const char constexpr int	kMaxErrorMsg = 256

base::EmbeddedVector< char, kMaxErrorMsg >	buffer

va_list	args

int	len = base::VSNPrintF(buffer, format, args)

	error_ = {offset, {buffer.begin(), static_cast<size_t>(len)}}

Detailed Description

Definition at line 88 of file decoder.h.

Member Typedef Documentation

◆ Name

template<typename ValidationTag >

using v8::internal::wasm::Decoder::Name = std::conditional_t<ValidationTag::validate, const char*, NoName>

Definition at line 110 of file decoder.h.

Member Enumeration Documentation

◆ TraceFlag

enum v8::internal::wasm::Decoder::TraceFlag : bool

Enumerator
kTrace
kNoTrace

Definition at line 113 of file decoder.h.

Constructor & Destructor Documentation

◆ Decoder() [1/3]

v8::internal::wasm::Decoder::Decoder	(	const uint8_t *	start,
		const uint8_t *	end,
		uint32_t	buffer_offset = 0 )

inline

Definition at line 115 of file decoder.h.

◆ Decoder() [2/3]

v8::internal::wasm::Decoder::Decoder	(	const base::Vector< const uint8_t >	bytes,
		uint32_t	buffer_offset = 0 )

inlineexplicit

Definition at line 117 of file decoder.h.

◆ Decoder() [3/3]

v8::internal::wasm::Decoder::Decoder	(	const uint8_t *	start,
		const uint8_t *	pc,
		const uint8_t *	end,
		uint32_t	buffer_offset = 0 )

inline

Definition at line 120 of file decoder.h.

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◆ ~Decoder()

virtual v8::internal::wasm::Decoder::~Decoder ( )

virtualdefault

Member Function Documentation

◆ available_bytes()

uint32_t v8::internal::wasm::Decoder::available_bytes ( ) const

inline

Definition at line 314 of file decoder.h.

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◆ buffer_offset()

uint32_t v8::internal::wasm::Decoder::buffer_offset ( ) const

inline

Definition at line 419 of file decoder.h.

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◆ CHECK_LT()

v8::internal::wasm::Decoder::CHECK_LT	(	0	,
		len	)

private

◆ checkAvailable()

bool v8::internal::wasm::Decoder::checkAvailable ( uint32_t size )

inline

Definition at line 321 of file decoder.h.

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◆ consume_bytes() [1/2]

void v8::internal::wasm::Decoder::consume_bytes	(	uint32_t	size,
		const char *	name,
		ITracer *	tracer )

inline

Definition at line 306 of file decoder.h.

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◆ consume_bytes() [2/2]

void v8::internal::wasm::Decoder::consume_bytes	(	uint32_t	size,
		const char *	name = "skip" )

inline

Definition at line 297 of file decoder.h.

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◆ consume_i32v()

int32_t v8::internal::wasm::Decoder::consume_i32v ( const char * name = "var_int32" )

inline

Definition at line 269 of file decoder.h.

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◆ consume_i64v()

int64_t v8::internal::wasm::Decoder::consume_i64v ( const char * name = "var_int64" )

inline

Definition at line 289 of file decoder.h.

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◆ consume_little_endian()

template<typename IntType , TraceFlag trace>

IntType v8::internal::wasm::Decoder::consume_little_endian ( const char * name )

inlineprivate

Definition at line 474 of file decoder.h.

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◆ consume_u16()

uint16_t v8::internal::wasm::Decoder::consume_u16 ( const char * name = "uint16_t" )

inline

Definition at line 237 of file decoder.h.

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◆ consume_u32()

uint32_t v8::internal::wasm::Decoder::consume_u32	(	const char *	name,
		ITracer *	tracer )

inline

Definition at line 242 of file decoder.h.

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◆ consume_u32v() [1/2]

uint32_t v8::internal::wasm::Decoder::consume_u32v	(	const char *	name,
		ITracer *	tracer )

inline

Definition at line 257 of file decoder.h.

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◆ consume_u32v() [2/2]

uint32_t v8::internal::wasm::Decoder::consume_u32v ( const char * name = "var_uint32" )

inline

Definition at line 251 of file decoder.h.

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◆ consume_u64v()

uint64_t v8::internal::wasm::Decoder::consume_u64v	(	const char *	name,
		ITracer *	tracer )

inline

Definition at line 277 of file decoder.h.

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◆ consume_u8() [1/2]

uint8_t v8::internal::wasm::Decoder::consume_u8	(	const char *	name,
		ITracer *	tracer )

inline

Definition at line 228 of file decoder.h.

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◆ consume_u8() [2/2]

uint8_t v8::internal::wasm::Decoder::consume_u8 ( const char * name = "uint8_t" )

inline

Definition at line 225 of file decoder.h.

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◆ end()

const uint8_t * v8::internal::wasm::Decoder::end ( ) const

inline

Definition at line 426 of file decoder.h.

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◆ error() [1/4]

const WasmError & v8::internal::wasm::Decoder::error ( ) const

inline

Definition at line 405 of file decoder.h.

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◆ error() [2/4]

void V8_NOINLINE V8_PRESERVE_MOST v8::internal::wasm::Decoder::error ( const char * msg )

inline

Definition at line 331 of file decoder.h.

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◆ error() [3/4]

void V8_NOINLINE V8_PRESERVE_MOST v8::internal::wasm::Decoder::error	(	const uint8_t *	pc,
		const char *	msg )

inline

Definition at line 334 of file decoder.h.

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◆ error() [4/4]

void V8_NOINLINE V8_PRESERVE_MOST v8::internal::wasm::Decoder::error	(	uint32_t	offset,
		const char *	msg )

inline

Definition at line 337 of file decoder.h.

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◆ errorf() [1/3]

template<typename... Args>

void V8_NOINLINE V8_PRESERVE_MOST v8::internal::wasm::Decoder::errorf	(	const char *	format,
		Args...	args )

inline

Definition at line 342 of file decoder.h.

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◆ errorf() [2/3]

template<typename... Args>

void V8_NOINLINE V8_PRESERVE_MOST v8::internal::wasm::Decoder::errorf	(	const uint8_t *	pc,
		const char *	format,
		Args...	args )

inline

Definition at line 347 of file decoder.h.

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◆ errorf() [3/3]

template<typename... Args>

void V8_NOINLINE V8_PRESERVE_MOST v8::internal::wasm::Decoder::errorf	(	uint32_t	offset,
		const char *	format,
		Args...	args )

inline

Definition at line 353 of file decoder.h.

◆ failed()

bool v8::internal::wasm::Decoder::failed ( ) const

inline

Definition at line 403 of file decoder.h.

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◆ GetBufferRelativeOffset()

uint32_t v8::internal::wasm::Decoder::GetBufferRelativeOffset ( uint32_t offset ) const

inline

Definition at line 422 of file decoder.h.

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◆ lookahead()

bool v8::internal::wasm::Decoder::lookahead	(	int	offset,
		uint8_t	expected )

inline

Definition at line 430 of file decoder.h.

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◆ more()

bool v8::internal::wasm::Decoder::more ( ) const

inline

Definition at line 404 of file decoder.h.

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◆ ok()

bool v8::internal::wasm::Decoder::ok ( ) const

inline

Definition at line 402 of file decoder.h.

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◆ onFirstError() [1/2]

virtual void v8::internal::wasm::Decoder::onFirstError ( )

inlinevirtual

Reimplemented in v8::internal::wasm::ModuleDecoderImpl, and v8::internal::wasm::WasmFullDecoder< ValidationTag, Interface, decoding_mode >.

Definition at line 362 of file decoder.h.

◆ onFirstError() [2/2]

v8::internal::wasm::Decoder::onFirstError ( )

private

◆ pc()

const uint8_t * v8::internal::wasm::Decoder::pc ( ) const

inline

Definition at line 408 of file decoder.h.

◆ pc_offset() [1/2]

uint32_t v8::internal::wasm::Decoder::pc_offset ( ) const

inline

Definition at line 418 of file decoder.h.

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◆ pc_offset() [2/2]

uint32_t V8_INLINE v8::internal::wasm::Decoder::pc_offset ( const uint8_t * pc ) const

inline

Definition at line 413 of file decoder.h.

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◆ position()

uint32_t V8_INLINE v8::internal::wasm::Decoder::position ( ) const

inline

Definition at line 409 of file decoder.h.

◆ PRINTF_FORMAT()

void V8_NOINLINE v8::internal::wasm::Decoder::PRINTF_FORMAT	(	3	,
		4	)

private

◆ read_i32v()

template<typename ValidationTag >

std::pair< int32_t, uint32_t > v8::internal::wasm::Decoder::read_i32v	(	const uint8_t *	pc,
		Name< ValidationTag >	name = "signed LEB32" )

inline

Definition at line 169 of file decoder.h.

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◆ read_i33v()

template<typename ValidationTag >

std::pair< int64_t, uint32_t > v8::internal::wasm::Decoder::read_i33v	(	const uint8_t *	pc,
		Name< ValidationTag >	name = "signed LEB33" )

inline

Definition at line 193 of file decoder.h.

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◆ read_i64v()

template<typename ValidationTag >

std::pair< int64_t, uint32_t > v8::internal::wasm::Decoder::read_i64v	(	const uint8_t *	pc,
		Name< ValidationTag >	name = "signed LEB64" )

inline

Definition at line 185 of file decoder.h.

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◆ read_leb()

template<typename IntType , typename ValidationTag , TraceFlag trace, size_t size_in_bits = 8 * sizeof(IntType)>

V8_INLINE std::pair< IntType, uint32_t > v8::internal::wasm::Decoder::read_leb	(	const uint8_t *	pc,
		Name< ValidationTag >	name = "varint" )

inlineprivate

Definition at line 492 of file decoder.h.

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◆ read_leb_slowpath()

template<typename IntType , typename ValidationTag , TraceFlag trace, size_t size_in_bits = 8 * sizeof(IntType)>

V8_NOINLINE V8_PRESERVE_MOST std::pair< IntType, uint32_t > v8::internal::wasm::Decoder::read_leb_slowpath	(	const uint8_t *	pc,
		Name< ValidationTag >	name )

inlineprivate

Definition at line 522 of file decoder.h.

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◆ read_leb_tail()

template<typename IntType , typename ValidationTag , TraceFlag trace, size_t size_in_bits, int byte_index>

V8_INLINE std::pair< IntType, uint32_t > v8::internal::wasm::Decoder::read_leb_tail	(	const uint8_t *	pc,
		Name< ValidationTag >	name,
		IntType	intermediate_result )

inlineprivate

Definition at line 531 of file decoder.h.

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◆ read_little_endian()

template<typename IntType , typename ValidationTag >

IntType v8::internal::wasm::Decoder::read_little_endian	(	const uint8_t *	pc,
		Name< ValidationTag >	msg )

inlineprivate

Definition at line 460 of file decoder.h.

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◆ read_prefixed_opcode()

template<typename ValidationTag >

std::pair< WasmOpcode, uint32_t > v8::internal::wasm::Decoder::read_prefixed_opcode	(	const uint8_t *	pc,
		Name< ValidationTag >	name = "prefixed opcode" )

inline

Definition at line 202 of file decoder.h.

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◆ read_u16()

template<typename ValidationTag >

uint16_t v8::internal::wasm::Decoder::read_u16	(	const uint8_t *	pc,
		Name< ValidationTag >	msg = "expected 2 bytes" )

inline

Definition at line 139 of file decoder.h.

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◆ read_u32()

template<typename ValidationTag >

uint32_t v8::internal::wasm::Decoder::read_u32	(	const uint8_t *	pc,
		Name< ValidationTag >	msg = "expected 4 bytes" )

inline

Definition at line 146 of file decoder.h.

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◆ read_u32v()

template<typename ValidationTag >

std::pair< uint32_t, uint32_t > v8::internal::wasm::Decoder::read_u32v	(	const uint8_t *	pc,
		Name< ValidationTag >	name = "LEB32" )

inline

Definition at line 161 of file decoder.h.

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◆ read_u64()

template<typename ValidationTag >

uint64_t v8::internal::wasm::Decoder::read_u64	(	const uint8_t *	pc,
		Name< ValidationTag >	msg = "expected 8 bytes" )

inline

Definition at line 153 of file decoder.h.

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◆ read_u64v()

template<typename ValidationTag >

std::pair< uint64_t, uint32_t > v8::internal::wasm::Decoder::read_u64v	(	const uint8_t *	pc,
		Name< ValidationTag >	name = "LEB64" )

inline

Definition at line 177 of file decoder.h.

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◆ read_u8()

template<typename ValidationTag >

uint8_t v8::internal::wasm::Decoder::read_u8	(	const uint8_t *	pc,
		Name< ValidationTag >	msg = "expected 1 byte" )

inline

Definition at line 132 of file decoder.h.

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◆ Reset() [1/2]

void v8::internal::wasm::Decoder::Reset	(	base::Vector< const uint8_t >	bytes,
		uint32_t	buffer_offset = 0 )

inline

Definition at line 398 of file decoder.h.

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◆ Reset() [2/2]

void v8::internal::wasm::Decoder::Reset	(	const uint8_t *	start,
		const uint8_t *	end,
		uint32_t	buffer_offset = 0 )

inline

Definition at line 387 of file decoder.h.

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◆ set_end()

void v8::internal::wasm::Decoder::set_end ( const uint8_t * end )

inline

Definition at line 427 of file decoder.h.

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◆ start()

const uint8_t * v8::internal::wasm::Decoder::start ( ) const

inline

Definition at line 407 of file decoder.h.

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◆ toResult()

template<typename T , typename R = std::decay_t<T>>

Result< R > v8::internal::wasm::Decoder::toResult ( T && val )

inline

Definition at line 378 of file decoder.h.

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◆ traceByteRange()

void v8::internal::wasm::Decoder::traceByteRange	(	const uint8_t *	start,
		const uint8_t *	end )

inline

Definition at line 365 of file decoder.h.

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◆ traceOffEnd()

void v8::internal::wasm::Decoder::traceOffEnd ( )

inline

Definition at line 371 of file decoder.h.

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◆ va_end()

v8::internal::wasm::Decoder::va_end ( args )

private

◆ va_start()

v8::internal::wasm::Decoder::va_start	(	args	,
		format	)

private

Member Data Documentation

◆ args

va_list v8::internal::wasm::Decoder::args

private

Definition at line 450 of file decoder.h.

◆ buffer

base::EmbeddedVector<char, kMaxErrorMsg> v8::internal::wasm::Decoder::buffer

private

Definition at line 449 of file decoder.h.

◆ buffer_offset_

uint32_t v8::internal::wasm::Decoder::buffer_offset_

protected

Definition at line 440 of file decoder.h.

◆ end_

const uint8_t* v8::internal::wasm::Decoder::end_

protected

Definition at line 438 of file decoder.h.

◆ error_ [1/2]

WasmError v8::internal::wasm::Decoder::error_

protected

Definition at line 441 of file decoder.h.

◆ error_ [2/2]

v8::internal::wasm::Decoder::error_ = {offset, {buffer.begin(), static_cast<size_t>(len)}}

private

Definition at line 455 of file decoder.h.

◆ format

void V8_NOINLINE const char* v8::internal::wasm::Decoder::format

private

Definition at line 445 of file decoder.h.

◆ kFullValidation

struct v8::internal::wasm::Decoder::FullValidationTag v8::internal::wasm::Decoder::kFullValidation = {}

static

◆ kMaxErrorMsg

void V8_NOINLINE const char constexpr int v8::internal::wasm::Decoder::kMaxErrorMsg = 256

constexprprivate

Definition at line 448 of file decoder.h.

◆ kNoValidation

struct v8::internal::wasm::Decoder::NoValidationTag v8::internal::wasm::Decoder::kNoValidation = {}

static

◆ len

int v8::internal::wasm::Decoder::len = base::VSNPrintF(buffer, format, args)

private

Definition at line 452 of file decoder.h.

◆ pc_

const uint8_t* v8::internal::wasm::Decoder::pc_

protected

Definition at line 437 of file decoder.h.

◆ start_

const uint8_t* v8::internal::wasm::Decoder::start_

protected

Definition at line 436 of file decoder.h.

The documentation for this class was generated from the following file:

src/wasm/decoder.h

Classes

Public Types

Public Member Functions

Static Public Attributes

Protected Attributes

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ Name

Member Enumeration Documentation

◆ TraceFlag

Constructor & Destructor Documentation

◆ Decoder() [1/3]

◆ Decoder() [2/3]

◆ Decoder() [3/3]

◆ ~Decoder()

Member Function Documentation

◆ available_bytes()

◆ buffer_offset()

◆ CHECK_LT()

◆ checkAvailable()

◆ consume_bytes() [1/2]

◆ consume_bytes() [2/2]

◆ consume_i32v()

◆ consume_i64v()

◆ consume_little_endian()

◆ consume_u16()

◆ consume_u32()

◆ consume_u32v() [1/2]

◆ consume_u32v() [2/2]

◆ consume_u64v()

◆ consume_u8() [1/2]

◆ consume_u8() [2/2]

◆ end()

◆ error() [1/4]

◆ error() [2/4]

◆ error() [3/4]

◆ error() [4/4]

◆ errorf() [1/3]

◆ errorf() [2/3]

◆ errorf() [3/3]

◆ failed()

◆ GetBufferRelativeOffset()

◆ lookahead()

◆ more()

◆ ok()

◆ onFirstError() [1/2]

◆ onFirstError() [2/2]

◆ pc()

◆ pc_offset() [1/2]

◆ pc_offset() [2/2]

◆ position()

◆ PRINTF_FORMAT()

◆ read_i32v()

◆ read_i33v()

◆ read_i64v()

◆ read_leb()

◆ read_leb_slowpath()

◆ read_leb_tail()

◆ read_little_endian()

◆ read_prefixed_opcode()

◆ read_u16()

◆ read_u32()

◆ read_u32v()

◆ read_u64()

◆ read_u64v()

◆ read_u8()

◆ Reset() [1/2]

◆ Reset() [2/2]

◆ set_end()

◆ start()

◆ toResult()

◆ traceByteRange()

◆ traceOffEnd()

◆ va_end()

◆ va_start()

Member Data Documentation

◆ args

◆ buffer