Class OpcodeData

A single opcode-execution entry in an OpcodesData trace.

Inheritance
object
OpcodeData
Inherited Members
Namespace: Hiero.Mirror
Assembly: Hiero.dll
Syntax
public class OpcodeData
Remarks

The Memory and Storage fields are populated only when their projection filters (OpcodeMemoryProjectionFilter, OpcodeStorageProjectionFilter) were set to include them on the request; otherwise they arrive null. The Stack field is included by default and arrives null only when OpcodeStackProjectionFilter excludes it.

Properties

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Depth

The call-stack depth at which this opcode executed.

Declaration
[JsonPropertyName("depth")]
public int Depth { get; set; }
Property Value
Type Description
int
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Gas

Remaining gas available when this opcode began executing.

Declaration
[JsonPropertyName("gas")]
public long Gas { get; set; }
Property Value
Type Description
long
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GasCost

Gas cost charged for executing this specific opcode.

Declaration
[JsonPropertyName("gas_cost")]
public long GasCost { get; set; }
Property Value
Type Description
long
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Memory

The EVM memory, one 32-byte word per array element. Null when memory was not requested on the tracing call.

Declaration
[JsonPropertyName("memory")]
[JsonConverter(typeof(HexStringArraytoBytesArrayConverter))]
public ReadOnlyMemory<byte>[]? Memory { get; set; }
Property Value
Type Description
ReadOnlyMemory<byte>[]
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Op

The mnemonic name of the opcode (e.g. PUSH1, SLOAD).

Declaration
[JsonPropertyName("op")]
public string Op { get; set; }
Property Value
Type Description
string
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Pc

Program counter at which this opcode executed.

Declaration
[JsonPropertyName("pc")]
public int Pc { get; set; }
Property Value
Type Description
int
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Reason

Revert reason bytes, when the opcode is a revert. Empty otherwise.

Declaration
[JsonPropertyName("reason")]
[JsonConverter(typeof(HexStringToBytesConverter))]
public ReadOnlyMemory<byte> Reason { get; set; }
Property Value
Type Description
ReadOnlyMemory<byte>
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Stack

The EVM stack, one 32-byte word per array element. Null when stack information was explicitly excluded on the tracing call.

Declaration
[JsonPropertyName("stack")]
[JsonConverter(typeof(HexStringArraytoBytesArrayConverter))]
public ReadOnlyMemory<byte>[]? Stack { get; set; }
Property Value
Type Description
ReadOnlyMemory<byte>[]
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Storage

Storage slots read or written by this opcode, keyed by slot hash (preserved as its on-the-wire hex-string form, since EVM storage keys are conventionally displayed as hex). Null when storage was not requested on the tracing call.

Declaration
[JsonPropertyName("storage")]
[JsonConverter(typeof(HexStringDictionaryToBytesConverter))]
public Dictionary<string, ReadOnlyMemory<byte>>? Storage { get; set; }
Property Value
Type Description
Dictionary<string, ReadOnlyMemory<byte>>