mirror of
https://github.com/pjh456/OxideJS.git
synced 2026-10-23 18:21:13 +08:00
feat: 实现 JsValue NaN-Boxing 值类型
This commit is contained in:
Generated
+396
@@ -79,12 +79,33 @@ dependencies = [
|
||||
"windows-sys 0.61.2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "anyhow"
|
||||
version = "1.0.102"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "7f202df86484c868dbad7eaa557ef785d5c66295e41b460ef922eca0723b842c"
|
||||
|
||||
[[package]]
|
||||
name = "autocfg"
|
||||
version = "1.5.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53"
|
||||
|
||||
[[package]]
|
||||
name = "bit-set"
|
||||
version = "0.8.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "08807e080ed7f9d5433fa9b275196cfc35414f66a0c79d864dc51a0d825231a3"
|
||||
dependencies = [
|
||||
"bit-vec",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "bit-vec"
|
||||
version = "0.8.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7"
|
||||
|
||||
[[package]]
|
||||
name = "bitflags"
|
||||
version = "2.12.1"
|
||||
@@ -250,6 +271,12 @@ version = "0.1.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c34f04666d835ff5d62e058c3995147c06f42fe86ff053337632bca83e42702d"
|
||||
|
||||
[[package]]
|
||||
name = "equivalent"
|
||||
version = "1.0.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
|
||||
|
||||
[[package]]
|
||||
name = "errno"
|
||||
version = "0.3.14"
|
||||
@@ -283,6 +310,43 @@ dependencies = [
|
||||
"windows-sys 0.59.0",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "fnv"
|
||||
version = "1.0.7"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
|
||||
|
||||
[[package]]
|
||||
name = "foldhash"
|
||||
version = "0.1.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"
|
||||
|
||||
[[package]]
|
||||
name = "getrandom"
|
||||
version = "0.3.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "899def5c37c4fd7b2664648c28120ecec138e4d395b459e5ca34f9cce2dd77fd"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"libc",
|
||||
"r-efi 5.3.0",
|
||||
"wasip2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "getrandom"
|
||||
version = "0.4.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0de51e6874e94e7bf76d726fc5d13ba782deca734ff60d5bb2fb2607c7406555"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"libc",
|
||||
"r-efi 6.0.0",
|
||||
"wasip2",
|
||||
"wasip3",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "hashbrown"
|
||||
version = "0.14.5"
|
||||
@@ -293,6 +357,15 @@ dependencies = [
|
||||
"allocator-api2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "hashbrown"
|
||||
version = "0.15.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
|
||||
dependencies = [
|
||||
"foldhash",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "hashbrown"
|
||||
version = "0.17.1"
|
||||
@@ -317,6 +390,24 @@ dependencies = [
|
||||
"windows-sys 0.61.2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "id-arena"
|
||||
version = "2.3.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3d3067d79b975e8844ca9eb072e16b31c3c1c36928edf9c6789548c524d0d954"
|
||||
|
||||
[[package]]
|
||||
name = "indexmap"
|
||||
version = "2.14.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d466e9454f08e4a911e14806c24e16fba1b4c121d1ea474396f396069cf949d9"
|
||||
dependencies = [
|
||||
"equivalent",
|
||||
"hashbrown 0.17.1",
|
||||
"serde",
|
||||
"serde_core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "is_terminal_polyfill"
|
||||
version = "1.70.2"
|
||||
@@ -329,6 +420,12 @@ version = "1.0.18"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
|
||||
|
||||
[[package]]
|
||||
name = "leb128fmt"
|
||||
version = "0.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "09edd9e8b54e49e587e4f6295a7d29c3ea94d469cb40ab8ca70b288248a81db2"
|
||||
|
||||
[[package]]
|
||||
name = "libc"
|
||||
version = "0.2.186"
|
||||
@@ -699,6 +796,7 @@ dependencies = [
|
||||
"hashbrown 0.14.5",
|
||||
"oxide_compiler",
|
||||
"oxide_kernel",
|
||||
"proptest",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@@ -763,6 +861,25 @@ dependencies = [
|
||||
"siphasher",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "ppv-lite86"
|
||||
version = "0.2.21"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
|
||||
dependencies = [
|
||||
"zerocopy",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "prettyplease"
|
||||
version = "0.2.37"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "proc-macro2"
|
||||
version = "1.0.106"
|
||||
@@ -772,6 +889,31 @@ dependencies = [
|
||||
"unicode-ident",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "proptest"
|
||||
version = "1.11.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4b45fcc2344c680f5025fe57779faef368840d0bd1f42f216291f0dc4ace4744"
|
||||
dependencies = [
|
||||
"bit-set",
|
||||
"bit-vec",
|
||||
"bitflags",
|
||||
"num-traits",
|
||||
"rand",
|
||||
"rand_chacha",
|
||||
"rand_xorshift",
|
||||
"regex-syntax",
|
||||
"rusty-fork",
|
||||
"tempfile",
|
||||
"unarray",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "quick-error"
|
||||
version = "1.2.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
|
||||
|
||||
[[package]]
|
||||
name = "quote"
|
||||
version = "1.0.45"
|
||||
@@ -781,6 +923,18 @@ dependencies = [
|
||||
"proc-macro2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "r-efi"
|
||||
version = "5.3.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
|
||||
|
||||
[[package]]
|
||||
name = "r-efi"
|
||||
version = "6.0.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
|
||||
|
||||
[[package]]
|
||||
name = "radix_trie"
|
||||
version = "0.2.1"
|
||||
@@ -791,6 +945,44 @@ dependencies = [
|
||||
"nibble_vec",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rand"
|
||||
version = "0.9.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "44c5af06bb1b7d3216d91932aed5265164bf384dc89cd6ba05cf59a35f5f76ea"
|
||||
dependencies = [
|
||||
"rand_chacha",
|
||||
"rand_core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rand_chacha"
|
||||
version = "0.9.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
|
||||
dependencies = [
|
||||
"ppv-lite86",
|
||||
"rand_core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rand_core"
|
||||
version = "0.9.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "76afc826de14238e6e8c374ddcc1fa19e374fd8dd986b0d2af0d02377261d83c"
|
||||
dependencies = [
|
||||
"getrandom 0.3.4",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rand_xorshift"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "513962919efc330f829edb2535844d1b912b0fbe2ca165d613e4e8788bb05a5a"
|
||||
dependencies = [
|
||||
"rand_core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rayon"
|
||||
version = "1.12.0"
|
||||
@@ -820,6 +1012,12 @@ dependencies = [
|
||||
"bitflags",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "regex-syntax"
|
||||
version = "0.8.10"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a"
|
||||
|
||||
[[package]]
|
||||
name = "rustc-hash"
|
||||
version = "2.1.2"
|
||||
@@ -845,6 +1043,18 @@ version = "1.0.22"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d"
|
||||
|
||||
[[package]]
|
||||
name = "rusty-fork"
|
||||
version = "0.3.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "cc6bf79ff24e648f6da1f8d1f011e9cac26491b619e6b9280f2b47f1774e6ee2"
|
||||
dependencies = [
|
||||
"fnv",
|
||||
"quick-error",
|
||||
"tempfile",
|
||||
"wait-timeout",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rustyline"
|
||||
version = "14.0.0"
|
||||
@@ -879,6 +1089,12 @@ version = "1.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
|
||||
|
||||
[[package]]
|
||||
name = "semver"
|
||||
version = "1.0.28"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8a7852d02fc848982e0c167ef163aaff9cd91dc640ba85e263cb1ce46fae51cd"
|
||||
|
||||
[[package]]
|
||||
name = "seq-macro"
|
||||
version = "0.3.6"
|
||||
@@ -968,6 +1184,19 @@ dependencies = [
|
||||
"unicode-ident",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tempfile"
|
||||
version = "3.27.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "32497e9a4c7b38532efcdebeef879707aa9f794296a4f0244f6f69e9bc8574bd"
|
||||
dependencies = [
|
||||
"fastrand",
|
||||
"getrandom 0.4.2",
|
||||
"once_cell",
|
||||
"rustix",
|
||||
"windows-sys 0.61.2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "textwrap"
|
||||
version = "0.16.2"
|
||||
@@ -999,6 +1228,12 @@ dependencies = [
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unarray"
|
||||
version = "0.1.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "eaea85b334db583fe3274d12b4cd1880032beab409c0d774be044d4480ab9a94"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-id-start"
|
||||
version = "1.4.0"
|
||||
@@ -1035,6 +1270,12 @@ version = "0.2.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b4ac048d71ede7ee76d585517add45da530660ef4390e49b098733c6e897f254"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-xid"
|
||||
version = "0.2.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
|
||||
|
||||
[[package]]
|
||||
name = "utf8parse"
|
||||
version = "0.2.2"
|
||||
@@ -1047,6 +1288,67 @@ version = "0.9.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
|
||||
|
||||
[[package]]
|
||||
name = "wait-timeout"
|
||||
version = "0.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "09ac3b126d3914f9849036f826e054cbabdc8519970b8998ddaf3b5bd3c65f11"
|
||||
dependencies = [
|
||||
"libc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wasip2"
|
||||
version = "1.0.3+wasi-0.2.9"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "20064672db26d7cdc89c7798c48a0fdfac8213434a1186e5ef29fd560ae223d6"
|
||||
dependencies = [
|
||||
"wit-bindgen 0.57.1",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wasip3"
|
||||
version = "0.4.0+wasi-0.3.0-rc-2026-01-06"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5428f8bf88ea5ddc08faddef2ac4a67e390b88186c703ce6dbd955e1c145aca5"
|
||||
dependencies = [
|
||||
"wit-bindgen 0.51.0",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wasm-encoder"
|
||||
version = "0.244.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "990065f2fe63003fe337b932cfb5e3b80e0b4d0f5ff650e6985b1048f62c8319"
|
||||
dependencies = [
|
||||
"leb128fmt",
|
||||
"wasmparser",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wasm-metadata"
|
||||
version = "0.244.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "bb0e353e6a2fbdc176932bbaab493762eb1255a7900fe0fea1a2f96c296cc909"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"indexmap",
|
||||
"wasm-encoder",
|
||||
"wasmparser",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wasmparser"
|
||||
version = "0.244.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "47b807c72e1bac69382b3a6fb3dbe8ea4c0ed87ff5629b8685ae6b9a611028fe"
|
||||
dependencies = [
|
||||
"bitflags",
|
||||
"hashbrown 0.15.5",
|
||||
"indexmap",
|
||||
"semver",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "winapi"
|
||||
version = "0.3.9"
|
||||
@@ -1166,6 +1468,100 @@ version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
|
||||
|
||||
[[package]]
|
||||
name = "wit-bindgen"
|
||||
version = "0.51.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d7249219f66ced02969388cf2bb044a09756a083d0fab1e566056b04d9fbcaa5"
|
||||
dependencies = [
|
||||
"wit-bindgen-rust-macro",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wit-bindgen"
|
||||
version = "0.57.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1ebf944e87a7c253233ad6766e082e3cd714b5d03812acc24c318f549614536e"
|
||||
|
||||
[[package]]
|
||||
name = "wit-bindgen-core"
|
||||
version = "0.51.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ea61de684c3ea68cb082b7a88508a8b27fcc8b797d738bfc99a82facf1d752dc"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"heck",
|
||||
"wit-parser",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wit-bindgen-rust"
|
||||
version = "0.51.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b7c566e0f4b284dd6561c786d9cb0142da491f46a9fbed79ea69cdad5db17f21"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"heck",
|
||||
"indexmap",
|
||||
"prettyplease",
|
||||
"syn",
|
||||
"wasm-metadata",
|
||||
"wit-bindgen-core",
|
||||
"wit-component",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wit-bindgen-rust-macro"
|
||||
version = "0.51.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0c0f9bfd77e6a48eccf51359e3ae77140a7f50b1e2ebfe62422d8afdaffab17a"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"prettyplease",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"wit-bindgen-core",
|
||||
"wit-bindgen-rust",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wit-component"
|
||||
version = "0.244.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9d66ea20e9553b30172b5e831994e35fbde2d165325bec84fc43dbf6f4eb9cb2"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"bitflags",
|
||||
"indexmap",
|
||||
"log",
|
||||
"serde",
|
||||
"serde_derive",
|
||||
"serde_json",
|
||||
"wasm-encoder",
|
||||
"wasm-metadata",
|
||||
"wasmparser",
|
||||
"wit-parser",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wit-parser"
|
||||
version = "0.244.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ecc8ac4bc1dc3381b7f59c34f00b67e18f910c2c0f50015669dde7def656a736"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"id-arena",
|
||||
"indexmap",
|
||||
"log",
|
||||
"semver",
|
||||
"serde",
|
||||
"serde_derive",
|
||||
"serde_json",
|
||||
"unicode-xid",
|
||||
"wasmparser",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "zerocopy"
|
||||
version = "0.8.50"
|
||||
|
||||
@@ -31,6 +31,7 @@ dashmap = "6"
|
||||
rayon = "1"
|
||||
bumpalo = "3"
|
||||
hashbrown = "0.14"
|
||||
proptest = "1"
|
||||
|
||||
[workspace.lints.clippy]
|
||||
all = { level = "deny", priority = -1 }
|
||||
|
||||
@@ -11,3 +11,6 @@ oxide_compiler = { path = "../oxide_compiler" }
|
||||
oxide_kernel = { path = "../oxide_kernel" }
|
||||
bumpalo.workspace = true
|
||||
hashbrown.workspace = true
|
||||
|
||||
[dev-dependencies]
|
||||
proptest.workspace = true
|
||||
|
||||
@@ -1 +1,4 @@
|
||||
#![doc = "OxideJS - Register-based VM with epoch arena memory"]
|
||||
|
||||
pub mod value;
|
||||
pub use value::JsValue;
|
||||
|
||||
@@ -0,0 +1,174 @@
|
||||
use std::fmt;
|
||||
|
||||
/// Quiet NaN prefix — bits 63-51 = sign(1) + exponent(0x7FF) + quiet_bit(1)
|
||||
const QNAN_PREFIX: u64 = 0xFFF8_0000_0000_0000;
|
||||
|
||||
/// NaN exponent mask — bits 62-52
|
||||
const EXP_MASK: u64 = 0x7FF0_0000_0000_0000;
|
||||
|
||||
/// Mantissa mask — bits 51-0
|
||||
const MANTISSA_MASK: u64 = 0x000F_FFFF_FFFF_FFFF;
|
||||
|
||||
/// Tag sits in bits 50-48 of mantissa
|
||||
const TAG_MASK: u64 = 0x0007_0000_0000_0000;
|
||||
const TAG_SHIFT: u64 = 48;
|
||||
const TAG_INT: u64 = 0;
|
||||
const TAG_BOOL: u64 = 1;
|
||||
const TAG_NULL: u64 = 2;
|
||||
const TAG_UNDEFINED: u64 = 3;
|
||||
const TAG_OBJECT: u64 = 4;
|
||||
|
||||
/// 48-bit pointer mask (x86-64 canonical VA)
|
||||
const PTR_MASK: u64 = 0x0000_FFFF_FFFF_FFFF;
|
||||
|
||||
/// 32-bit integer payload mask
|
||||
const INT_MASK: u64 = 0x0000_0000_FFFF_FFFF;
|
||||
|
||||
fn make_tag(tag: u64) -> u64 {
|
||||
QNAN_PREFIX | (tag << TAG_SHIFT)
|
||||
}
|
||||
|
||||
fn get_tag(bits: u64) -> u64 {
|
||||
(bits & TAG_MASK) >> TAG_SHIFT
|
||||
}
|
||||
|
||||
#[repr(transparent)]
|
||||
#[derive(Copy, Clone, PartialEq)]
|
||||
pub struct JsValue(u64);
|
||||
|
||||
impl JsValue {
|
||||
pub fn int(v: i32) -> Self {
|
||||
Self(make_tag(TAG_INT) | (v as u32 as u64))
|
||||
}
|
||||
|
||||
pub fn float(v: f64) -> Self {
|
||||
let bits = v.to_bits();
|
||||
if is_nan_bits(bits) {
|
||||
Self(QNAN_PREFIX | 1)
|
||||
} else {
|
||||
Self(bits)
|
||||
}
|
||||
}
|
||||
|
||||
pub fn bool(v: bool) -> Self {
|
||||
Self(make_tag(TAG_BOOL) | (v as u64))
|
||||
}
|
||||
|
||||
pub fn null() -> Self {
|
||||
Self(make_tag(TAG_NULL))
|
||||
}
|
||||
|
||||
pub fn undefined() -> Self {
|
||||
Self(make_tag(TAG_UNDEFINED))
|
||||
}
|
||||
|
||||
pub fn object(ptr: *const u8) -> Self {
|
||||
let addr = ptr as u64;
|
||||
debug_assert!(addr <= PTR_MASK, "object pointer must fit in 48 bits");
|
||||
Self(make_tag(TAG_OBJECT) | addr)
|
||||
}
|
||||
|
||||
pub fn is_double(&self) -> bool {
|
||||
!is_nan_bits(self.0)
|
||||
}
|
||||
|
||||
pub fn is_int(&self) -> bool {
|
||||
get_tag(self.0) == TAG_INT
|
||||
}
|
||||
|
||||
pub fn is_bool(&self) -> bool {
|
||||
get_tag(self.0) == TAG_BOOL
|
||||
}
|
||||
|
||||
pub fn is_null(&self) -> bool {
|
||||
self.0 == make_tag(TAG_NULL)
|
||||
}
|
||||
|
||||
pub fn is_undefined(&self) -> bool {
|
||||
self.0 == make_tag(TAG_UNDEFINED)
|
||||
}
|
||||
|
||||
pub fn is_object(&self) -> bool {
|
||||
get_tag(self.0) == TAG_OBJECT
|
||||
}
|
||||
|
||||
pub fn as_double(&self) -> f64 {
|
||||
debug_assert!(self.is_double(), "JsValue is not a double");
|
||||
f64::from_bits(self.0)
|
||||
}
|
||||
|
||||
pub fn as_int(&self) -> i32 {
|
||||
debug_assert!(self.is_int(), "JsValue is not an int");
|
||||
(self.0 & INT_MASK) as i32
|
||||
}
|
||||
|
||||
pub fn as_bool(&self) -> bool {
|
||||
debug_assert!(self.is_bool(), "JsValue is not a bool");
|
||||
(self.0 & 1) != 0
|
||||
}
|
||||
|
||||
pub fn as_ptr(&self) -> *const u8 {
|
||||
debug_assert!(self.is_object(), "JsValue is not an object");
|
||||
(self.0 & PTR_MASK) as *const u8
|
||||
}
|
||||
}
|
||||
|
||||
fn is_nan_bits(bits: u64) -> bool {
|
||||
(bits & EXP_MASK) == EXP_MASK && (bits & MANTISSA_MASK) != 0
|
||||
}
|
||||
|
||||
impl fmt::Display for JsValue {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
if self.is_int() {
|
||||
write!(f, "{}", self.as_int())
|
||||
} else if self.is_double() {
|
||||
let d = self.as_double();
|
||||
if d.is_nan() {
|
||||
write!(f, "NaN")
|
||||
} else if d.is_infinite() {
|
||||
if d.is_sign_positive() {
|
||||
write!(f, "Infinity")
|
||||
} else {
|
||||
write!(f, "-Infinity")
|
||||
}
|
||||
} else {
|
||||
write!(f, "{d}")
|
||||
}
|
||||
} else if self.is_bool() {
|
||||
write!(f, "{}", self.as_bool())
|
||||
} else if self.is_null() {
|
||||
write!(f, "null")
|
||||
} else if self.is_undefined() {
|
||||
write!(f, "undefined")
|
||||
} else if self.is_object() {
|
||||
write!(f, "{{object}}")
|
||||
} else {
|
||||
write!(f, "{{unknown}}")
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl fmt::Debug for JsValue {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
if self.is_int() {
|
||||
write!(f, "JsValue(Int({}))", self.as_int())
|
||||
} else if self.is_double() {
|
||||
let d = self.as_double();
|
||||
if d.is_nan() {
|
||||
write!(f, "JsValue(Double(NaN))")
|
||||
} else {
|
||||
write!(f, "JsValue(Double({d}))")
|
||||
}
|
||||
} else if self.is_bool() {
|
||||
write!(f, "JsValue(Bool({}))", self.as_bool())
|
||||
} else if self.is_null() {
|
||||
write!(f, "JsValue(Null)")
|
||||
} else if self.is_undefined() {
|
||||
write!(f, "JsValue(Undefined)")
|
||||
} else if self.is_object() {
|
||||
write!(f, "JsValue(Object({:p}))", self.as_ptr())
|
||||
} else {
|
||||
write!(f, "JsValue(Unknown)")
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user