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SEE IT FOR YOURSELF
A valid counter call, step by stepStep 1 / 4
This example begins with count zero and a request to call increment(). No real contract is deployed.
This example begins with count zero and a request to call increment(). No real contract is deployed.Execution follows the code’s input and permission rules. A website button is not the access-control mechanism.The function reads zero, calculates zero plus one, and writes one to persistent storage.The accepted state contains count one. Later reads can inspect it. Events are emitted only if the code implements them.
Animated local teaching model. No wallet, RPC or live blockchain data. Some labels and hashes are abbreviated for readability.
Enter static execution
STATICCALL calls a target without transferring value and executes under a static restriction. It is a runtime property of the call context.
Propagate the restriction
Nested calls cannot evade static restrictions merely by entering another contract. Operations that violate the static context cause execution failure.
Do not equate read-only with harmless
A static call can still revert, consume gas or return misleading data. Lack of state writes does not authenticate the answer or ensure cheap execution.
Distinguish source annotations
Solidity view and pure declarations help the compiler enforce expectations. Static EVM context is a separate runtime mechanism, and arbitrary supplied bytecode needs its own analysis.
Trace the idea
STATICCALL target
allowed: read state, compute output
prohibited: persistent state writes and other disallowed effects
possible: revert or consume supplied gas
Stack examples list the bottom first and the top last. These small traces omit gas and surrounding dispatch unless stated.