This page describes a current approximation of Lorito's ops. It is expected to converge with the eventual implementation as the number of edits increases.

Control Flow (5 ops)

• noop - do nothing
• call - call a sub (or an object method or vtable function)
• end - halt the interpreter cleanly
• goto - unconditional branch
• if - conditional branch

Math (14 ops)

• add_[in] - add two registers of the same type
• sub_[in] - subtract two registers
• mul_[in] - multiply two registers
• div_[in] - divide two registers
• mod_[in] - take the mod of a register
• and - bitwise and of an int
• or - bitwise or of an int
• not - bitwise not of an int
• xor - bitwise exclusive or of an int

Comparison (6 ops)

• iseq_[in] - compute equality between two registers of the same type
• isgt_[in] - a >= b
• isge_[in] - a > b

Values (12 ops)

• set_[ins]_[ins] - copy/coerce registers between primitive types
• load_const_[ins] - load a constant into a register

Objects (8 ops)

• box - turn an int, float or string into an object
• new - create a new object
• new_[insp] - create a new object with an argument
• getattr - retrieve an object attribute's value
• setattr - set an object attribute's value

Other (1 op)

• loadlib - load a (dll/so, pbc or HLL?) library

I/O (3 ops, bootstrapping only)

• read - read from stdin*
• write - write to stdout*
• gripe - write to stderr*

* read, write and gripe are only intended for use during Lorito's implementation phase. Once Lorito matures, these ops will become methods on a FileHandle.