evmc::HostContext Class Reference

Wrapper around EVMC host context / host interface. More...

#include <evmc.hpp>

Inheritance diagram for evmc::HostContext:

Public Member Functions
	HostContext ()=default
	Default constructor for null Host context.
	HostContext (const evmc_host_interface &interface, evmc_host_context *ctx) noexcept
	Constructor from the EVMC Host primitives.
bool	account_exists (const address &address) const noexcept final
	Check account existence callback function.
bytes32	get_storage (const address &address, const bytes32 &key) const noexcept final
	Get storage callback function.
evmc_storage_status	set_storage (const address &address, const bytes32 &key, const bytes32 &value) noexcept final
	Set storage callback function.
uint256be	get_balance (const address &address) const noexcept final
	Get balance callback function.
size_t	get_code_size (const address &address) const noexcept final
	Get code size callback function.
bytes32	get_code_hash (const address &address) const noexcept final
	Get code hash callback function.
size_t	copy_code (const address &address, size_t code_offset, uint8_t *buffer_data, size_t buffer_size) const noexcept final
	Copy code callback function.
bool	selfdestruct (const address &addr, const address &beneficiary) noexcept final
	Selfdestruct callback function.
Result	call (const evmc_message &message) noexcept final
	Call callback function.
evmc_tx_context	get_tx_context () const noexcept final
	Get transaction context callback function.
bytes32	get_block_hash (int64_t number) const noexcept final
	Get block hash callback function.
void	emit_log (const address &addr, const uint8_t *data, size_t data_size, const bytes32 topics[], size_t topics_count) noexcept final
	Emit log callback function.
evmc_access_status	access_account (const address &address) noexcept final
	Access account callback function.
evmc_access_status	access_storage (const address &address, const bytes32 &key) noexcept final
	Access storage callback function.
bytes32	get_transient_storage (const address &address, const bytes32 &key) const noexcept final
	Get transient storage callback function.
void	set_transient_storage (const address &address, const bytes32 &key, const bytes32 &value) noexcept final
	Set transient storage callback function.
virtual bool	account_exists (const address &addr) const noexcept=0
	Check account existence callback function.
virtual bytes32	get_storage (const address &addr, const bytes32 &key) const noexcept=0
	Get storage callback function.
virtual evmc_storage_status	set_storage (const address &addr, const bytes32 &key, const bytes32 &value) noexcept=0
	Set storage callback function.
virtual uint256be	get_balance (const address &addr) const noexcept=0
	Get balance callback function.
virtual size_t	get_code_size (const address &addr) const noexcept=0
	Get code size callback function.
virtual bytes32	get_code_hash (const address &addr) const noexcept=0
	Get code hash callback function.
virtual size_t	copy_code (const address &addr, size_t code_offset, uint8_t *buffer_data, size_t buffer_size) const noexcept=0
	Copy code callback function.
virtual bool	selfdestruct (const address &addr, const address &beneficiary) noexcept=0
	Selfdestruct callback function.
virtual Result	call (const evmc_message &msg) noexcept=0
	Call callback function.
virtual evmc_tx_context	get_tx_context () const noexcept=0
	Get transaction context callback function.
virtual bytes32	get_block_hash (int64_t block_number) const noexcept=0
	Get block hash callback function.
virtual void	emit_log (const address &addr, const uint8_t *data, size_t data_size, const bytes32 topics[], size_t num_topics) noexcept=0
	Emit log callback function.
virtual evmc_access_status	access_account (const address &addr) noexcept=0
	Access account callback function.
virtual evmc_access_status	access_storage (const address &addr, const bytes32 &key) noexcept=0
	Access storage callback function.
virtual bytes32	get_transient_storage (const address &addr, const bytes32 &key) const noexcept=0
	Get transient storage callback function.
virtual void	set_transient_storage (const address &addr, const bytes32 &key, const bytes32 &value) noexcept=0
	Set transient storage callback function.

Detailed Description

Wrapper around EVMC host context / host interface.

To be used by VM implementations as better alternative to using evmc_host_context directly.

Definition at line 508 of file evmc.hpp.

Constructor & Destructor Documentation

HostContext()

evmc::HostContext::HostContext ( const evmc_host_interface &  interface, evmc_host_context *  ctx  )

inlinenoexcept

Constructor from the EVMC Host primitives.

Parameters

interface	The reference to the Host interface.
ctx	The pointer to the Host context object. This parameter MAY be null.

Definition at line 520 of file evmc.hpp.

      : host{&interface}, context{ctx}
    {}

Member Function Documentation

access_account()

evmc_access_status evmc::HostContext::access_account ( const address &  addr )

inlinefinalvirtualnoexcept

Access account callback function.

Implements evmc::HostInterface.

Definition at line 591 of file evmc.hpp.

    {
        return host->access_account(context, &address);
    }

access_storage()

evmc_access_status evmc::HostContext::access_storage ( const address &  addr, const bytes32 &  key  )

inlinefinalvirtualnoexcept

Access storage callback function.

Implements evmc::HostInterface.

Definition at line 596 of file evmc.hpp.

    {
        return host->access_storage(context, &address, &key);
    }

account_exists()

bool evmc::HostContext::account_exists ( const address &  addr ) const

inlinefinalvirtualnoexcept

Check account existence callback function.

Implements evmc::HostInterface.

Definition at line 524 of file evmc.hpp.

    {
        return host->account_exists(context, &address);
    }

call()

Result evmc::HostContext::call ( const evmc_message &  msg )

inlinefinalvirtualnoexcept

Call callback function.

Implements evmc::HostInterface.

Definition at line 569 of file evmc.hpp.

    {
        return Result{host->call(context, &message)};
    }

copy_code()

size_t evmc::HostContext::copy_code ( const address &  addr, size_t  code_offset, uint8_t *  buffer_data, size_t  buffer_size  ) const

inlinefinalvirtualnoexcept

Copy code callback function.

Implements evmc::HostInterface.

Definition at line 556 of file evmc.hpp.

    {
        return host->copy_code(context, &address, code_offset, buffer_data, buffer_size);
    }

emit_log()

void evmc::HostContext::emit_log ( const address &  addr, const uint8_t *  data, size_t  data_size, const bytes32  topics[], size_t  num_topics  )

inlinefinalvirtualnoexcept

Emit log callback function.

Implements evmc::HostInterface.

Definition at line 582 of file evmc.hpp.

    {
        host->emit_log(context, &addr, data, data_size, topics, topics_count);
    }

get_balance()

uint256be evmc::HostContext::get_balance ( const address &  addr ) const

inlinefinalvirtualnoexcept

Get balance callback function.

Implements evmc::HostInterface.

Definition at line 541 of file evmc.hpp.

    {
        return host->get_balance(context, &address);
    }

get_block_hash()

bytes32 evmc::HostContext::get_block_hash ( int64_t  block_number ) const

inlinefinalvirtualnoexcept

Get block hash callback function.

Implements evmc::HostInterface.

Definition at line 577 of file evmc.hpp.

    {
        return host->get_block_hash(context, number);
    }

get_code_hash()

bytes32 evmc::HostContext::get_code_hash ( const address &  addr ) const

inlinefinalvirtualnoexcept

Get code hash callback function.

Implements evmc::HostInterface.

Definition at line 551 of file evmc.hpp.

    {
        return host->get_code_hash(context, &address);
    }

get_code_size()

size_t evmc::HostContext::get_code_size ( const address &  addr ) const

inlinefinalvirtualnoexcept

Get code size callback function.

Implements evmc::HostInterface.

Definition at line 546 of file evmc.hpp.

    {
        return host->get_code_size(context, &address);
    }

get_storage()

bytes32 evmc::HostContext::get_storage ( const address &  addr, const bytes32 &  key  ) const

inlinefinalvirtualnoexcept

Get storage callback function.

Implements evmc::HostInterface.

Definition at line 529 of file evmc.hpp.

    {
        return host->get_storage(context, &address, &key);
    }

get_transient_storage()

bytes32 evmc::HostContext::get_transient_storage ( const address &  addr, const bytes32 &  key  ) const

inlinefinalvirtualnoexcept

Get transient storage callback function.

Implements evmc::HostInterface.

Definition at line 601 of file evmc.hpp.

    {
        return host->get_transient_storage(context, &address, &key);
    }

get_tx_context()

evmc_tx_context evmc::HostContext::get_tx_context ( ) const

inlinefinalvirtualnoexcept

Get transaction context callback function.

Implements evmc::HostInterface.

Definition at line 575 of file evmc.hpp.

{ return host->get_tx_context(context); }

selfdestruct()

bool evmc::HostContext::selfdestruct ( const address &  addr, const address &  beneficiary  )

inlinefinalvirtualnoexcept

Selfdestruct callback function.

Implements evmc::HostInterface.

Definition at line 564 of file evmc.hpp.

    {
        return host->selfdestruct(context, &addr, &beneficiary);
    }

set_storage()

evmc_storage_status evmc::HostContext::set_storage ( const address &  addr, const bytes32 &  key, const bytes32 &  value  )

inlinefinalvirtualnoexcept

Set storage callback function.

Implements evmc::HostInterface.

Definition at line 534 of file evmc.hpp.

    {
        return host->set_storage(context, &address, &key, &value);
    }

set_transient_storage()

void evmc::HostContext::set_transient_storage ( const address &  addr, const bytes32 &  key, const bytes32 &  value  )

inlinefinalvirtualnoexcept

Set transient storage callback function.

Implements evmc::HostInterface.

Definition at line 606 of file evmc.hpp.

    {
        host->set_transient_storage(context, &address, &key, &value);
    }

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

• include/evmc/evmc.hpp