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lash 2023-04-01 15:40:51 +01:00
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@ -11,11 +11,11 @@ The VM defines the following opcode symbols:
* `BACK` - Return to the previous execution frame (will fail if at top frame). It leaves to the state of the execution layer to define what "previous" means. * `BACK` - Return to the previous execution frame (will fail if at top frame). It leaves to the state of the execution layer to define what "previous" means.
* `CATCH <symbol> <signal>` - Jump to symbol if signal is set (see `signal` below). * `CATCH <symbol> <signal>` - Jump to symbol if signal is set (see `signal` below).
* `CROAK <signal>` - Clear state and restart execution from tip if signal is set (see `signal` below). * `CROAK <signal>` - Clear state and restart execution from top if signal is set (see `signal` below).
* `LOAD <symbol> <size>` - Execute the code symbol `symbol` and cache the data, constrained to the given `size`. * `LOAD <symbol> <size>` - Execute the code symbol `symbol` and cache the data, constrained to the given `size`.
* `RELOAD <symbol>` - Execute a code symbol already loaded by `LOAD` and cache the data, constrained to the given `size`. * `RELOAD <symbol>` - Execute a code symbol already loaded by `LOAD` and cache the data, constrained to the previously given `size` for the same symbol.
* `MAP <symbol>` - Expose a code symbol previously loaded by `LOAD`. Roughly corresponds to the `global` directive in Python. * `MAP <symbol>` - Expose a code symbol previously loaded by `LOAD` to the rendering client. Roughly corresponds to the `global` directive in Python.
* `MOVE <symbol>` - Create a new execution frame, invalidating all previous `MAP` calls. * `MOVE <symbol>` - Create a new execution frame, invalidating all previous `MAP` calls. More detailed: After a `MOVE` call, a `BACK` call will return to the same execution frame, with the same symbols available, but all `MAP` calls will have to be repeated.
## Rendering ## Rendering