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refactor: 用 define_opcodes! 宏统一生成 OpCode 枚举/TryFrom/Display

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爱特每羊队
2026-06-25 18:12:37 +08:00
parent 06f769c4e0
commit 93326a6f31
1 changed files with 188 additions and 365 deletions
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crates/oxide_bytecode/src/opcode.rs
+180 -357
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@@ -1,5 +1,15 @@
use std::fmt;
/// Generate the `OpCode` enum plus its `TryFrom<u8>` and `Display` impls from a
/// single table. Each row is `VARIANT = 0xXX => "DISPLAY"` — the byte value is
/// the enum discriminant, the `TryFrom` match arm, and the `Display` name come
/// from the same row, so the three tables can never drift. A new opcode is one
/// row.
///
/// Grouping comments (`// -- Arithmetic --`) are stripped by the lexer before
/// macro expansion, so they can be interleaved freely between rows.
macro_rules! define_opcodes {
( $( $name:ident = $val:literal => $disp:literal ),+ $(,)? ) => {
/// OpCode for register-based bytecode VM.
///
/// Organized in groups of 16 for readability. Implemented opcodes have
@@ -9,149 +19,175 @@ use std::fmt;
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
#[allow(non_camel_case_types)]
pub enum OpCode {
$( $name = $val, )+
}
impl TryFrom<u8> for OpCode {
type Error = ();
fn try_from(value: u8) -> Result<Self, Self::Error> {
match value {
$( $val => Ok(OpCode::$name), )+
_ => Err(()),
}
}
}
impl fmt::Display for OpCode {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let name = match self {
$( OpCode::$name => $disp, )+
};
write!(f, "{name}")
}
}
};
}
define_opcodes! {
// ── Arithmetic (0x00-0x0F) ──
ADD = 0x00,
SUB = 0x01,
MUL = 0x02,
DIV = 0x03,
MOD = 0x04,
NEG = 0x05,
COMPOUND_ADD = 0x06,
COMPOUND_SUB = 0x07,
COMPOUND_MUL = 0x08,
COMPOUND_DIV = 0x09,
COMPOUND_MOD = 0x0A,
COMPOUND_EXP = 0x0B,
ADD = 0x00 => "ADD",
SUB = 0x01 => "SUB",
MUL = 0x02 => "MUL",
DIV = 0x03 => "DIV",
MOD = 0x04 => "MOD",
NEG = 0x05 => "NEG",
COMPOUND_ADD = 0x06 => "COMPOUND_ADD",
COMPOUND_SUB = 0x07 => "COMPOUND_SUB",
COMPOUND_MUL = 0x08 => "COMPOUND_MUL",
COMPOUND_DIV = 0x09 => "COMPOUND_DIV",
COMPOUND_MOD = 0x0A => "COMPOUND_MOD",
COMPOUND_EXP = 0x0B => "COMPOUND_EXP",
// -- Comparison (0x10-0x1F) --
EQ = 0x10,
NEQ = 0x11,
LT = 0x12,
GT = 0x13,
LTE = 0x14,
GTE = 0x15,
IN = 0x16,
NOT = 0x17,
AND = 0x18,
OR = 0x19,
STRICT_EQ = 0x1A,
STRICT_NEQ = 0x1C,
UNARY_PLUS = 0x1D,
EQ = 0x10 => "EQ",
NEQ = 0x11 => "NEQ",
LT = 0x12 => "LT",
GT = 0x13 => "GT",
LTE = 0x14 => "LTE",
GTE = 0x15 => "GTE",
IN = 0x16 => "IN",
NOT = 0x17 => "NOT",
AND = 0x18 => "AND",
OR = 0x19 => "OR",
STRICT_EQ = 0x1A => "STRICT_EQ",
STRICT_NEQ = 0x1C => "STRICT_NEQ",
UNARY_PLUS = 0x1D => "UNARY_PLUS",
// -- Control Flow (0x20-0x2F) --
JMP = 0x20,
JMP_IF_FALSE = 0x21,
JMP_IF_TRUE = 0x22,
FOR_OF_INIT = 0x23,
FOR_OF_NEXT = 0x24,
JMP = 0x20 => "JMP",
JMP_IF_FALSE = 0x21 => "JMP_IF_FALSE",
JMP_IF_TRUE = 0x22 => "JMP_IF_TRUE",
FOR_OF_INIT = 0x23 => "FOR_OF_INIT",
FOR_OF_NEXT = 0x24 => "FOR_OF_NEXT",
// -- Update (0x25-0x28) --
INC_PRE = 0x25,
INC_POST = 0x26,
DEC_PRE = 0x27,
DEC_POST = 0x28,
INC_PRE = 0x25 => "INC_PRE",
INC_POST = 0x26 => "INC_POST",
DEC_PRE = 0x27 => "DEC_PRE",
DEC_POST = 0x28 => "DEC_POST",
FOR_IN_INIT = 0x29,
FOR_IN_NEXT = 0x2A,
FOR_IN_DONE = 0x2B,
SWITCH_TABLE = 0x2C,
FOR_IN_CLEANUP = 0x2D,
FOR_IN_INIT = 0x29 => "FOR_IN_INIT",
FOR_IN_NEXT = 0x2A => "FOR_IN_NEXT",
FOR_IN_DONE = 0x2B => "FOR_IN_DONE",
SWITCH_TABLE = 0x2C => "SWITCH_TABLE",
FOR_IN_CLEANUP = 0x2D => "FOR_IN_CLEANUP",
// -- Exception (0x2E-0x2F, 0x33-0x35) --
THROW = 0x2E,
TRY_BEGIN = 0x2F,
TRY_END = 0x33,
TRY_FINALLY_BEGIN = 0x34,
TRY_FINALLY_END = 0x35,
FOR_OF_DONE = 0x36,
FOR_OF_CLOSE = 0x37,
THROW = 0x2E => "THROW",
TRY_BEGIN = 0x2F => "TRY_BEGIN",
TRY_END = 0x33 => "TRY_END",
TRY_FINALLY_BEGIN = 0x34 => "TRY_FINALLY_BEGIN",
TRY_FINALLY_END = 0x35 => "TRY_FINALLY_END",
FOR_OF_DONE = 0x36 => "FOR_OF_DONE",
FOR_OF_CLOSE = 0x37 => "FOR_OF_CLOSE",
// -- Template Literal (0x38) --
TEMPLATE_STR = 0x38,
TEMPLATE_STR = 0x38 => "TEMPLATE_STR",
// -- Small Language Features (0x39-0x3B) --
DELETE_PROP_STATIC = 0x39,
DELETE_PROP_DYNAMIC = 0x3A,
INSTANCEOF = 0x3B,
REST_OBJECT = 0x3E,
DELETE_PROP_STATIC = 0x39 => "DELETE_PROP_STATIC",
DELETE_PROP_DYNAMIC = 0x3A => "DELETE_PROP_DYNAMIC",
INSTANCEOF = 0x3B => "INSTANCEOF",
REST_OBJECT = 0x3E => "REST_OBJECT",
// -- Variable (0x30-0x32) --
LOAD_VAR = 0x30,
STORE_VAR = 0x31,
LOAD_CONST = 0x32,
LOAD_VAR = 0x30 => "LOAD_VAR",
STORE_VAR = 0x31 => "STORE_VAR",
LOAD_CONST = 0x32 => "LOAD_CONST",
// -- Call (0x40-0x4F) --
CALL = 0x40,
RETURN = 0x41,
CALL_NATIVE = 0x42,
NEW_EXPRESSION = 0x43,
SUPER_CALL = 0x44,
SUPER_GET_PROP = 0x45,
SUPER_STATIC_GET_PROP = 0x46,
SET_HOME_OBJECT = 0x47,
DEFINE_ACCESSOR = 0x48,
CREATE_CLOSURE = 0x4A,
CREATE_REGEXP = 0x4B,
CALL = 0x40 => "CALL",
RETURN = 0x41 => "RETURN",
CALL_NATIVE = 0x42 => "CALL_NATIVE",
NEW_EXPRESSION = 0x43 => "NEW_EXPRESSION",
SUPER_CALL = 0x44 => "SUPER_CALL",
SUPER_GET_PROP = 0x45 => "SUPER_GET_PROP",
SUPER_STATIC_GET_PROP = 0x46 => "SUPER_STATIC_GET_PROP",
SET_HOME_OBJECT = 0x47 => "SET_HOME_OBJECT",
DEFINE_ACCESSOR = 0x48 => "DEFINE_ACCESSOR",
CREATE_CLOSURE = 0x4A => "CREATE_CLOSURE",
CREATE_REGEXP = 0x4B => "CREATE_REGEXP",
// ── Object Property (0x50-0x5F) ──
IC_GET_PROP = 0x50,
IC_SET_PROP = 0x51,
GET_PROP = 0x52,
GET_PROP_DYNAMIC = 0x53,
SET_PROP = 0x54,
SET_PROP_DYNAMIC = 0x55,
NEW_OBJECT = 0x56,
NEW_ARRAY = 0x57,
SET_ELEM = 0x58,
IC_GET_PROP = 0x50 => "IC_GET_PROP",
IC_SET_PROP = 0x51 => "IC_SET_PROP",
GET_PROP = 0x52 => "GET_PROP",
GET_PROP_DYNAMIC = 0x53 => "GET_PROP_DYNAMIC",
SET_PROP = 0x54 => "SET_PROP",
SET_PROP_DYNAMIC = 0x55 => "SET_PROP_DYNAMIC",
NEW_OBJECT = 0x56 => "NEW_OBJECT",
NEW_ARRAY = 0x57 => "NEW_ARRAY",
SET_ELEM = 0x58 => "SET_ELEM",
// -- Member Update (0x59-0x62) --
MEMBER_INC = 0x59,
MEMBER_DEC = 0x5A,
DYN_MEMBER_INC = 0x5B,
DYN_MEMBER_DEC = 0x5C,
COMPOUND_MEMBER_ADD = 0x5D,
COMPOUND_MEMBER_SUB = 0x5E,
COMPOUND_MEMBER_MUL = 0x5F,
COMPOUND_MEMBER_DIV = 0x60,
COMPOUND_MEMBER_MOD = 0x61,
COMPOUND_MEMBER_EXP = 0x62,
MEMBER_INC = 0x59 => "MEMBER_INC",
MEMBER_DEC = 0x5A => "MEMBER_DEC",
DYN_MEMBER_INC = 0x5B => "DYN_MEMBER_INC",
DYN_MEMBER_DEC = 0x5C => "DYN_MEMBER_DEC",
COMPOUND_MEMBER_ADD = 0x5D => "COMPOUND_MEMBER_ADD",
COMPOUND_MEMBER_SUB = 0x5E => "COMPOUND_MEMBER_SUB",
COMPOUND_MEMBER_MUL = 0x5F => "COMPOUND_MEMBER_MUL",
COMPOUND_MEMBER_DIV = 0x60 => "COMPOUND_MEMBER_DIV",
COMPOUND_MEMBER_MOD = 0x61 => "COMPOUND_MEMBER_MOD",
COMPOUND_MEMBER_EXP = 0x62 => "COMPOUND_MEMBER_EXP",
// -- Profiling - placeholders (0x63-0x6F) --
PROFILE_TYPE = 0x63,
PROFILE_SHAPE = 0x64,
PROFILE_BRANCH = 0x65,
PROFILE_CALL = 0x66,
PROFILE_TYPE = 0x63 => "PROFILE_TYPE",
PROFILE_SHAPE = 0x64 => "PROFILE_SHAPE",
PROFILE_BRANCH = 0x65 => "PROFILE_BRANCH",
PROFILE_CALL = 0x66 => "PROFILE_CALL",
// ── Parallel — placeholders (0x70-0x7F) ──
FORK = 0x70,
JOIN = 0x71,
GET_PRIVATE = 0x72,
SET_PRIVATE = 0x73,
INIT_PRIVATE = 0x74,
PRIVATE_BRAND_IN = 0x75,
FORK = 0x70 => "FORK",
JOIN = 0x71 => "JOIN",
GET_PRIVATE = 0x72 => "GET_PRIVATE",
SET_PRIVATE = 0x73 => "SET_PRIVATE",
INIT_PRIVATE = 0x74 => "INIT_PRIVATE",
PRIVATE_BRAND_IN = 0x75 => "PRIVATE_BRAND_IN",
// -- Bitwise (0x80-0x8F) --
BIT_AND = 0x80,
BIT_OR = 0x81,
BIT_XOR = 0x82,
SHL = 0x83,
SHR = 0x84,
USHR = 0x85,
BIT_NOT = 0x86,
COMPOUND_AND = 0x88,
COMPOUND_OR = 0x89,
COMPOUND_XOR = 0x8A,
COMPOUND_SHL = 0x8B,
COMPOUND_SHR = 0x8C,
COMPOUND_USHR = 0x8D,
NULLISH = 0x8E,
JMP_IF_NULLISH = 0x8F,
BIT_AND = 0x80 => "BIT_AND",
BIT_OR = 0x81 => "BIT_OR",
BIT_XOR = 0x82 => "BIT_XOR",
SHL = 0x83 => "SHL",
SHR = 0x84 => "SHR",
USHR = 0x85 => "USHR",
BIT_NOT = 0x86 => "BIT_NOT",
COMPOUND_AND = 0x88 => "COMPOUND_AND",
COMPOUND_OR = 0x89 => "COMPOUND_OR",
COMPOUND_XOR = 0x8A => "COMPOUND_XOR",
COMPOUND_SHL = 0x8B => "COMPOUND_SHL",
COMPOUND_SHR = 0x8C => "COMPOUND_SHR",
COMPOUND_USHR = 0x8D => "COMPOUND_USHR",
NULLISH = 0x8E => "NULLISH",
JMP_IF_NULLISH = 0x8F => "JMP_IF_NULLISH",
// ── Misc (0xF0-0xFF) ──
NOP = 0xF0,
HALT = 0xF1,
TYPEOF = 0xF2,
VOID = 0xF3,
NOP = 0xF0 => "NOP",
HALT = 0xF1 => "HALT",
TYPEOF = 0xF2 => "TYPEOF",
VOID = 0xF3 => "VOID",
}
impl OpCode {
@@ -172,250 +208,6 @@ impl OpCode {
}
}
impl TryFrom<u8> for OpCode {
type Error = ();
fn try_from(value: u8) -> Result<Self, Self::Error> {
match value {
0x00 => Ok(OpCode::ADD),
0x01 => Ok(OpCode::SUB),
0x02 => Ok(OpCode::MUL),
0x03 => Ok(OpCode::DIV),
0x04 => Ok(OpCode::MOD),
0x05 => Ok(OpCode::NEG),
0x06 => Ok(OpCode::COMPOUND_ADD),
0x07 => Ok(OpCode::COMPOUND_SUB),
0x08 => Ok(OpCode::COMPOUND_MUL),
0x09 => Ok(OpCode::COMPOUND_DIV),
0x0A => Ok(OpCode::COMPOUND_MOD),
0x0B => Ok(OpCode::COMPOUND_EXP),
0x10 => Ok(OpCode::EQ),
0x11 => Ok(OpCode::NEQ),
0x12 => Ok(OpCode::LT),
0x13 => Ok(OpCode::GT),
0x14 => Ok(OpCode::LTE),
0x15 => Ok(OpCode::GTE),
0x16 => Ok(OpCode::IN),
0x17 => Ok(OpCode::NOT),
0x18 => Ok(OpCode::AND),
0x19 => Ok(OpCode::OR),
0x1A => Ok(OpCode::STRICT_EQ),
0x1C => Ok(OpCode::STRICT_NEQ),
0x1D => Ok(OpCode::UNARY_PLUS),
0x20 => Ok(OpCode::JMP),
0x21 => Ok(OpCode::JMP_IF_FALSE),
0x22 => Ok(OpCode::JMP_IF_TRUE),
0x23 => Ok(OpCode::FOR_OF_INIT),
0x24 => Ok(OpCode::FOR_OF_NEXT),
0x25 => Ok(OpCode::INC_PRE),
0x26 => Ok(OpCode::INC_POST),
0x27 => Ok(OpCode::DEC_PRE),
0x28 => Ok(OpCode::DEC_POST),
0x29 => Ok(OpCode::FOR_IN_INIT),
0x2A => Ok(OpCode::FOR_IN_NEXT),
0x2B => Ok(OpCode::FOR_IN_DONE),
0x2C => Ok(OpCode::SWITCH_TABLE),
0x2D => Ok(OpCode::FOR_IN_CLEANUP),
0x2E => Ok(OpCode::THROW),
0x2F => Ok(OpCode::TRY_BEGIN),
0x30 => Ok(OpCode::LOAD_VAR),
0x31 => Ok(OpCode::STORE_VAR),
0x32 => Ok(OpCode::LOAD_CONST),
0x33 => Ok(OpCode::TRY_END),
0x34 => Ok(OpCode::TRY_FINALLY_BEGIN),
0x35 => Ok(OpCode::TRY_FINALLY_END),
0x36 => Ok(OpCode::FOR_OF_DONE),
0x37 => Ok(OpCode::FOR_OF_CLOSE),
0x38 => Ok(OpCode::TEMPLATE_STR),
0x39 => Ok(OpCode::DELETE_PROP_STATIC),
0x3A => Ok(OpCode::DELETE_PROP_DYNAMIC),
0x3B => Ok(OpCode::INSTANCEOF),
0x3E => Ok(OpCode::REST_OBJECT),
0x40 => Ok(OpCode::CALL),
0x41 => Ok(OpCode::RETURN),
0x42 => Ok(OpCode::CALL_NATIVE),
0x43 => Ok(OpCode::NEW_EXPRESSION),
0x44 => Ok(OpCode::SUPER_CALL),
0x45 => Ok(OpCode::SUPER_GET_PROP),
0x46 => Ok(OpCode::SUPER_STATIC_GET_PROP),
0x47 => Ok(OpCode::SET_HOME_OBJECT),
0x48 => Ok(OpCode::DEFINE_ACCESSOR),
0x4A => Ok(OpCode::CREATE_CLOSURE),
0x4B => Ok(OpCode::CREATE_REGEXP),
0x50 => Ok(OpCode::IC_GET_PROP),
0x51 => Ok(OpCode::IC_SET_PROP),
0x52 => Ok(OpCode::GET_PROP),
0x53 => Ok(OpCode::GET_PROP_DYNAMIC),
0x54 => Ok(OpCode::SET_PROP),
0x55 => Ok(OpCode::SET_PROP_DYNAMIC),
0x56 => Ok(OpCode::NEW_OBJECT),
0x57 => Ok(OpCode::NEW_ARRAY),
0x58 => Ok(OpCode::SET_ELEM),
0x59 => Ok(OpCode::MEMBER_INC),
0x5A => Ok(OpCode::MEMBER_DEC),
0x5B => Ok(OpCode::DYN_MEMBER_INC),
0x5C => Ok(OpCode::DYN_MEMBER_DEC),
0x5D => Ok(OpCode::COMPOUND_MEMBER_ADD),
0x5E => Ok(OpCode::COMPOUND_MEMBER_SUB),
0x5F => Ok(OpCode::COMPOUND_MEMBER_MUL),
0x60 => Ok(OpCode::COMPOUND_MEMBER_DIV),
0x61 => Ok(OpCode::COMPOUND_MEMBER_MOD),
0x62 => Ok(OpCode::COMPOUND_MEMBER_EXP),
0x63 => Ok(OpCode::PROFILE_TYPE),
0x64 => Ok(OpCode::PROFILE_SHAPE),
0x65 => Ok(OpCode::PROFILE_BRANCH),
0x66 => Ok(OpCode::PROFILE_CALL),
0x70 => Ok(OpCode::FORK),
0x71 => Ok(OpCode::JOIN),
0x72 => Ok(OpCode::GET_PRIVATE),
0x73 => Ok(OpCode::SET_PRIVATE),
0x74 => Ok(OpCode::INIT_PRIVATE),
0x75 => Ok(OpCode::PRIVATE_BRAND_IN),
0x80 => Ok(OpCode::BIT_AND),
0x81 => Ok(OpCode::BIT_OR),
0x82 => Ok(OpCode::BIT_XOR),
0x83 => Ok(OpCode::SHL),
0x84 => Ok(OpCode::SHR),
0x85 => Ok(OpCode::USHR),
0x86 => Ok(OpCode::BIT_NOT),
0x88 => Ok(OpCode::COMPOUND_AND),
0x89 => Ok(OpCode::COMPOUND_OR),
0x8A => Ok(OpCode::COMPOUND_XOR),
0x8B => Ok(OpCode::COMPOUND_SHL),
0x8C => Ok(OpCode::COMPOUND_SHR),
0x8D => Ok(OpCode::COMPOUND_USHR),
0x8E => Ok(OpCode::NULLISH),
0x8F => Ok(OpCode::JMP_IF_NULLISH),
0xF0 => Ok(OpCode::NOP),
0xF1 => Ok(OpCode::HALT),
0xF2 => Ok(OpCode::TYPEOF),
0xF3 => Ok(OpCode::VOID),
_ => Err(()),
}
}
}
impl fmt::Display for OpCode {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let name = match self {
OpCode::ADD => "ADD",
OpCode::SUB => "SUB",
OpCode::MUL => "MUL",
OpCode::DIV => "DIV",
OpCode::MOD => "MOD",
OpCode::NEG => "NEG",
OpCode::COMPOUND_ADD => "COMPOUND_ADD",
OpCode::COMPOUND_SUB => "COMPOUND_SUB",
OpCode::COMPOUND_MUL => "COMPOUND_MUL",
OpCode::COMPOUND_DIV => "COMPOUND_DIV",
OpCode::COMPOUND_MOD => "COMPOUND_MOD",
OpCode::COMPOUND_EXP => "COMPOUND_EXP",
OpCode::EQ => "EQ",
OpCode::NEQ => "NEQ",
OpCode::LT => "LT",
OpCode::GT => "GT",
OpCode::LTE => "LTE",
OpCode::GTE => "GTE",
OpCode::IN => "IN",
OpCode::NOT => "NOT",
OpCode::AND => "AND",
OpCode::OR => "OR",
OpCode::STRICT_EQ => "STRICT_EQ",
OpCode::STRICT_NEQ => "STRICT_NEQ",
OpCode::UNARY_PLUS => "UNARY_PLUS",
OpCode::JMP => "JMP",
OpCode::JMP_IF_FALSE => "JMP_IF_FALSE",
OpCode::JMP_IF_TRUE => "JMP_IF_TRUE",
OpCode::FOR_OF_INIT => "FOR_OF_INIT",
OpCode::FOR_OF_NEXT => "FOR_OF_NEXT",
OpCode::INC_PRE => "INC_PRE",
OpCode::INC_POST => "INC_POST",
OpCode::DEC_PRE => "DEC_PRE",
OpCode::DEC_POST => "DEC_POST",
OpCode::FOR_IN_INIT => "FOR_IN_INIT",
OpCode::FOR_IN_NEXT => "FOR_IN_NEXT",
OpCode::FOR_IN_DONE => "FOR_IN_DONE",
OpCode::SWITCH_TABLE => "SWITCH_TABLE",
OpCode::FOR_IN_CLEANUP => "FOR_IN_CLEANUP",
OpCode::THROW => "THROW",
OpCode::TRY_BEGIN => "TRY_BEGIN",
OpCode::TRY_END => "TRY_END",
OpCode::TRY_FINALLY_BEGIN => "TRY_FINALLY_BEGIN",
OpCode::TRY_FINALLY_END => "TRY_FINALLY_END",
OpCode::FOR_OF_DONE => "FOR_OF_DONE",
OpCode::FOR_OF_CLOSE => "FOR_OF_CLOSE",
OpCode::TEMPLATE_STR => "TEMPLATE_STR",
OpCode::DELETE_PROP_STATIC => "DELETE_PROP_STATIC",
OpCode::DELETE_PROP_DYNAMIC => "DELETE_PROP_DYNAMIC",
OpCode::INSTANCEOF => "INSTANCEOF",
OpCode::REST_OBJECT => "REST_OBJECT",
OpCode::LOAD_VAR => "LOAD_VAR",
OpCode::STORE_VAR => "STORE_VAR",
OpCode::LOAD_CONST => "LOAD_CONST",
OpCode::CALL => "CALL",
OpCode::RETURN => "RETURN",
OpCode::CALL_NATIVE => "CALL_NATIVE",
OpCode::NEW_EXPRESSION => "NEW_EXPRESSION",
OpCode::SUPER_CALL => "SUPER_CALL",
OpCode::SUPER_GET_PROP => "SUPER_GET_PROP",
OpCode::SUPER_STATIC_GET_PROP => "SUPER_STATIC_GET_PROP",
OpCode::SET_HOME_OBJECT => "SET_HOME_OBJECT",
OpCode::DEFINE_ACCESSOR => "DEFINE_ACCESSOR",
OpCode::CREATE_CLOSURE => "CREATE_CLOSURE",
OpCode::CREATE_REGEXP => "CREATE_REGEXP",
OpCode::IC_GET_PROP => "IC_GET_PROP",
OpCode::IC_SET_PROP => "IC_SET_PROP",
OpCode::GET_PROP => "GET_PROP",
OpCode::GET_PROP_DYNAMIC => "GET_PROP_DYNAMIC",
OpCode::SET_PROP => "SET_PROP",
OpCode::SET_PROP_DYNAMIC => "SET_PROP_DYNAMIC",
OpCode::NEW_OBJECT => "NEW_OBJECT",
OpCode::NEW_ARRAY => "NEW_ARRAY",
OpCode::SET_ELEM => "SET_ELEM",
OpCode::MEMBER_INC => "MEMBER_INC",
OpCode::MEMBER_DEC => "MEMBER_DEC",
OpCode::DYN_MEMBER_INC => "DYN_MEMBER_INC",
OpCode::DYN_MEMBER_DEC => "DYN_MEMBER_DEC",
OpCode::COMPOUND_MEMBER_ADD => "COMPOUND_MEMBER_ADD",
OpCode::COMPOUND_MEMBER_SUB => "COMPOUND_MEMBER_SUB",
OpCode::COMPOUND_MEMBER_MUL => "COMPOUND_MEMBER_MUL",
OpCode::COMPOUND_MEMBER_DIV => "COMPOUND_MEMBER_DIV",
OpCode::COMPOUND_MEMBER_MOD => "COMPOUND_MEMBER_MOD",
OpCode::COMPOUND_MEMBER_EXP => "COMPOUND_MEMBER_EXP",
OpCode::PROFILE_TYPE => "PROFILE_TYPE",
OpCode::PROFILE_SHAPE => "PROFILE_SHAPE",
OpCode::PROFILE_BRANCH => "PROFILE_BRANCH",
OpCode::PROFILE_CALL => "PROFILE_CALL",
OpCode::FORK => "FORK",
OpCode::JOIN => "JOIN",
OpCode::GET_PRIVATE => "GET_PRIVATE",
OpCode::SET_PRIVATE => "SET_PRIVATE",
OpCode::INIT_PRIVATE => "INIT_PRIVATE",
OpCode::PRIVATE_BRAND_IN => "PRIVATE_BRAND_IN",
OpCode::BIT_AND => "BIT_AND",
OpCode::BIT_OR => "BIT_OR",
OpCode::BIT_XOR => "BIT_XOR",
OpCode::SHL => "SHL",
OpCode::SHR => "SHR",
OpCode::USHR => "USHR",
OpCode::BIT_NOT => "BIT_NOT",
OpCode::COMPOUND_AND => "COMPOUND_AND",
OpCode::COMPOUND_OR => "COMPOUND_OR",
OpCode::COMPOUND_XOR => "COMPOUND_XOR",
OpCode::COMPOUND_SHL => "COMPOUND_SHL",
OpCode::COMPOUND_SHR => "COMPOUND_SHR",
OpCode::COMPOUND_USHR => "COMPOUND_USHR",
OpCode::NULLISH => "NULLISH",
OpCode::JMP_IF_NULLISH => "JMP_IF_NULLISH",
OpCode::NOP => "NOP",
OpCode::HALT => "HALT",
OpCode::TYPEOF => "TYPEOF",
OpCode::VOID => "VOID",
};
write!(f, "{name}")
}
}
/// 4-byte instruction.
///
/// Layout: `[opcode: u8] [rd: u8] [a: u8] [b: u8]`
@@ -487,3 +279,34 @@ pub fn encode_try_finally_begin(offset: i16) -> Instr {
let hi = ((offset as u16 >> 8) & 0xFF) as u8;
encode(OpCode::TRY_FINALLY_BEGIN, 0, lo, hi)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn opcode_table_is_byte_identical() {
for byte in 0u8..=u8::MAX {
if let Ok(op) = OpCode::try_from(byte) {
assert_eq!(op as u8, byte, "discriminant mismatch for 0x{byte:02X}");
assert!(!op.to_string().is_empty(), "empty Display for 0x{byte:02X}");
}
}
assert_eq!(OpCode::ADD as u8, 0x00);
assert_eq!(OpCode::STRICT_EQ as u8, 0x1A);
assert_eq!(OpCode::JMP_IF_NULLISH as u8, 0x8F);
assert_eq!(OpCode::VOID as u8, 0xF3);
assert_eq!(OpCode::ADD.to_string(), "ADD");
assert_eq!(OpCode::COMPOUND_MEMBER_EXP.to_string(), "COMPOUND_MEMBER_EXP");
assert!(OpCode::try_from(0x1B).is_err());
assert!(OpCode::try_from(0xFF).is_err());
let ic_count = (0u8..=u8::MAX)
.filter_map(|b| OpCode::try_from(b).ok())
.filter(OpCode::has_ic_ext_words)
.count();
assert_eq!(ic_count, 10);
}
}