2022-08-07 22:40:29 +02:00
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//! This module implements the instruction set running on the abstract
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//! machine implemented by tvix.
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2022-08-26 19:48:39 +02:00
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/// Index of a constant in the current code chunk.
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2022-08-26 19:46:43 +02:00
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#[repr(transparent)]
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2022-08-07 22:40:29 +02:00
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#[derive(Clone, Copy, Debug)]
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pub struct ConstantIdx(pub usize);
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2022-08-26 19:48:39 +02:00
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/// Index of an instruction in the current code chunk.
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2022-08-26 19:46:43 +02:00
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#[repr(transparent)]
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2022-08-07 22:40:29 +02:00
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#[derive(Clone, Copy, Debug)]
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pub struct CodeIdx(pub usize);
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2022-08-26 19:48:39 +02:00
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/// Offset by which an instruction pointer should change in a jump.
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2022-08-26 19:46:43 +02:00
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#[repr(transparent)]
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#[derive(Clone, Copy, Debug)]
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pub struct JumpOffset(pub usize);
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2022-08-25 17:39:27 +02:00
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#[allow(clippy::enum_variant_names)]
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2022-08-12 16:19:14 +02:00
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#[warn(variant_size_differences)]
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2022-08-07 22:40:29 +02:00
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#[derive(Clone, Copy, Debug)]
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pub enum OpCode {
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// Push a constant onto the stack.
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OpConstant(ConstantIdx),
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2022-08-11 12:12:07 +02:00
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// Discard a value from the stack.
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OpPop,
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2022-08-07 22:40:29 +02:00
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// Push a literal value.
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OpNull,
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OpTrue,
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OpFalse,
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2022-08-08 01:16:28 +02:00
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2022-08-08 01:51:28 +02:00
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// Unary operators
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OpInvert,
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OpNegate,
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2022-08-08 01:32:07 +02:00
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// Arithmetic binary operators
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2022-08-08 01:16:28 +02:00
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OpAdd,
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OpSub,
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OpMul,
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OpDiv,
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2022-08-08 01:32:07 +02:00
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2022-08-11 12:12:07 +02:00
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// Comparison operators
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2022-08-08 01:51:28 +02:00
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OpEqual,
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2022-08-11 10:37:04 +02:00
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OpLess,
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OpLessOrEq,
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OpMore,
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OpMoreOrEq,
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2022-08-09 15:53:09 +02:00
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2022-08-11 12:12:07 +02:00
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// Logical operators & generic jumps
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2022-08-26 19:46:43 +02:00
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OpJump(JumpOffset),
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OpJumpIfTrue(JumpOffset),
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OpJumpIfFalse(JumpOffset),
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OpJumpIfNotFound(JumpOffset),
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2022-08-11 12:12:07 +02:00
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2022-08-09 15:53:09 +02:00
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// Attribute sets
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OpAttrs(usize),
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2022-08-09 17:49:05 +02:00
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OpAttrPath(usize),
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2022-08-10 20:01:15 +02:00
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OpAttrsUpdate,
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2022-08-11 14:29:11 +02:00
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OpAttrsSelect,
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2022-08-26 17:40:55 +02:00
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OpAttrsTrySelect,
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2022-08-11 16:06:23 +02:00
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OpAttrsIsSet,
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2022-08-09 16:11:02 +02:00
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2022-08-14 23:13:57 +02:00
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// `with`-handling
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OpPushWith(usize),
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2022-08-14 23:38:30 +02:00
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OpPopWith,
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2022-08-15 00:13:17 +02:00
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OpResolveWith,
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2022-08-14 23:13:57 +02:00
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2022-08-09 16:11:02 +02:00
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// Lists
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OpList(usize),
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2022-08-11 10:50:38 +02:00
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OpConcat,
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2022-08-09 16:44:34 +02:00
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// Strings
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OpInterpolate(usize),
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2022-08-11 13:56:27 +02:00
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// Type assertion operators
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OpAssertBool,
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2022-08-13 16:34:20 +02:00
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2022-08-13 19:17:25 +02:00
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// Access local identifiers with statically known positions.
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OpGetLocal(usize),
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2022-08-13 16:34:20 +02:00
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// Close scopes while leaving their expression value around.
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OpCloseScope(usize), // number of locals to pop
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2022-08-16 14:53:35 +02:00
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// Asserts stack top is a boolean, and true.
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OpAssert,
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2022-08-24 01:26:58 +02:00
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// Lambdas
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OpCall,
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2022-08-07 22:40:29 +02:00
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}
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