Add a fuzzer and fix an overflow bug it found in the lexer
This commit is contained in:
bad
parent
4fa78336d0
commit
cd5ec62e42
8 changed files with 566 additions and 13 deletions
3
fuzz/.gitignore
vendored
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3
fuzz/.gitignore
vendored
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@ -0,0 +1,3 @@
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target
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corpus
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artifacts
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494
fuzz/Cargo.lock
generated
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494
fuzz/Cargo.lock
generated
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@ -0,0 +1,494 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "addr2line"
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version = "0.17.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b9ecd88a8c8378ca913a680cd98f0f13ac67383d35993f86c90a70e3f137816b"
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dependencies = [
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"gimli",
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]
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[[package]]
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name = "adler"
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version = "1.0.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
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[[package]]
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name = "ansi_term"
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version = "0.12.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
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dependencies = [
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"winapi",
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]
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[[package]]
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name = "arbitrary"
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version = "1.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c38b6b6b79f671c25e1a3e785b7b82d7562ffc9cd3efdc98627e5668a2472490"
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[[package]]
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name = "autocfg"
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version = "1.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
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[[package]]
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name = "backtrace"
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version = "0.3.64"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5e121dee8023ce33ab248d9ce1493df03c3b38a659b240096fcbd7048ff9c31f"
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dependencies = [
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"addr2line",
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"cc",
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"cfg-if",
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"libc",
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"miniz_oxide",
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"object",
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"rustc-demangle",
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]
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[[package]]
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name = "cc"
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version = "1.0.73"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2fff2a6927b3bb87f9595d67196a70493f627687a71d87a0d692242c33f58c11"
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[[package]]
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name = "cfg-if"
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version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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[[package]]
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name = "color-eyre"
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version = "0.6.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8ebf286c900a6d5867aeff75cfee3192857bb7f24b547d4f0df2ed6baa812c90"
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dependencies = [
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"backtrace",
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"color-spantrace",
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"eyre",
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"indenter",
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"once_cell",
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"owo-colors",
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"tracing-error",
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]
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[[package]]
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name = "color-spantrace"
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version = "0.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1ba75b3d9449ecdccb27ecbc479fdc0b87fa2dd43d2f8298f9bf0e59aacc8dce"
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dependencies = [
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"once_cell",
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"owo-colors",
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"tracing-core",
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"tracing-error",
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]
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[[package]]
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name = "crftng-intrprtrs"
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version = "0.1.0"
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dependencies = [
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"color-eyre",
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"dotenv",
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"from_variants",
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"match_any",
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"tracing",
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"tracing-subscriber",
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]
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[[package]]
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name = "crftng-intrprtrs-fuzz"
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version = "0.0.0"
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dependencies = [
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"crftng-intrprtrs",
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"libfuzzer-sys",
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]
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[[package]]
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name = "darling"
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version = "0.13.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a01d95850c592940db9b8194bc39f4bc0e89dee5c4265e4b1807c34a9aba453c"
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dependencies = [
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"darling_core",
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"darling_macro",
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]
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[[package]]
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name = "darling_core"
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version = "0.13.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "859d65a907b6852c9361e3185c862aae7fafd2887876799fa55f5f99dc40d610"
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dependencies = [
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"fnv",
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"ident_case",
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"proc-macro2",
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"quote",
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"strsim",
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"syn",
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]
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[[package]]
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name = "darling_macro"
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version = "0.13.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9c972679f83bdf9c42bd905396b6c3588a843a17f0f16dfcfa3e2c5d57441835"
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dependencies = [
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"darling_core",
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"quote",
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"syn",
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]
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[[package]]
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name = "dotenv"
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version = "0.15.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "77c90badedccf4105eca100756a0b1289e191f6fcbdadd3cee1d2f614f97da8f"
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[[package]]
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name = "eyre"
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version = "0.6.8"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4c2b6b5a29c02cdc822728b7d7b8ae1bab3e3b05d44522770ddd49722eeac7eb"
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dependencies = [
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"indenter",
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"once_cell",
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]
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[[package]]
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name = "fnv"
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version = "1.0.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
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[[package]]
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name = "from_variants"
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version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7cf36180ca6f3c021e91b194e16b670ef5cbdd0cea48354ff6f5f83e3c2d1629"
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dependencies = [
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"from_variants_impl",
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]
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[[package]]
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name = "from_variants_impl"
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version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "13abfd95d43eabb051a8d4b408ef92dfe6d8d4aa17651e5786d5c761e5e6e7ad"
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dependencies = [
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"darling",
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "gimli"
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version = "0.26.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "78cc372d058dcf6d5ecd98510e7fbc9e5aec4d21de70f65fea8fecebcd881bd4"
|
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[[package]]
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name = "ident_case"
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version = "1.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
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checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
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[[package]]
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name = "indenter"
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||||||
|
version = "0.3.3"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
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checksum = "ce23b50ad8242c51a442f3ff322d56b02f08852c77e4c0b4d3fd684abc89c683"
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[[package]]
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name = "lazy_static"
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version = "1.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
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[[package]]
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name = "libc"
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version = "0.2.121"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "efaa7b300f3b5fe8eb6bf21ce3895e1751d9665086af2d64b42f19701015ff4f"
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[[package]]
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name = "libfuzzer-sys"
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version = "0.4.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "336244aaeab6a12df46480dc585802aa743a72d66b11937844c61bbca84c991d"
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dependencies = [
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"arbitrary",
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"cc",
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"once_cell",
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]
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[[package]]
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name = "log"
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version = "0.4.16"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6389c490849ff5bc16be905ae24bc913a9c8892e19b2341dbc175e14c341c2b8"
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dependencies = [
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"cfg-if",
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]
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[[package]]
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name = "match_any"
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version = "1.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "95be9b73c284f83dea49e484302dcf0ebe6b72ac59c5a9c422bd0e52676f33a3"
|
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[[package]]
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name = "matchers"
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version = "0.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8263075bb86c5a1b1427b5ae862e8889656f126e9f77c484496e8b47cf5c5558"
|
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dependencies = [
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"regex-automata",
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]
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[[package]]
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name = "memchr"
|
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version = "2.4.1"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
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checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
|
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|
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[[package]]
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name = "miniz_oxide"
|
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|
version = "0.4.4"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
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|
checksum = "a92518e98c078586bc6c934028adcca4c92a53d6a958196de835170a01d84e4b"
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|
dependencies = [
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"adler",
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"autocfg",
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]
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[[package]]
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name = "object"
|
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|
version = "0.27.1"
|
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|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
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|
checksum = "67ac1d3f9a1d3616fd9a60c8d74296f22406a238b6a72f5cc1e6f314df4ffbf9"
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dependencies = [
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"memchr",
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]
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[[package]]
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name = "once_cell"
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version = "1.10.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
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checksum = "87f3e037eac156d1775da914196f0f37741a274155e34a0b7e427c35d2a2ecb9"
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|
[[package]]
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name = "owo-colors"
|
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|
version = "3.3.0"
|
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|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
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|
checksum = "5e72e30578e0d0993c8ae20823dd9cff2bc5517d2f586a8aef462a581e8a03eb"
|
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|
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[[package]]
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name = "pin-project-lite"
|
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|
version = "0.2.8"
|
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|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
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|
checksum = "e280fbe77cc62c91527259e9442153f4688736748d24660126286329742b4c6c"
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[[package]]
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name = "proc-macro2"
|
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|
version = "1.0.37"
|
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|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
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|
checksum = "ec757218438d5fda206afc041538b2f6d889286160d649a86a24d37e1235afd1"
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dependencies = [
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"unicode-xid",
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]
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[[package]]
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name = "quote"
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version = "1.0.17"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "632d02bff7f874a36f33ea8bb416cd484b90cc66c1194b1a1110d067a7013f58"
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dependencies = [
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"proc-macro2",
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]
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[[package]]
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name = "regex"
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version = "1.5.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1a11647b6b25ff05a515cb92c365cec08801e83423a235b51e231e1808747286"
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dependencies = [
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"regex-syntax",
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]
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[[package]]
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name = "regex-automata"
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version = "0.1.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
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|
checksum = "6c230d73fb8d8c1b9c0b3135c5142a8acee3a0558fb8db5cf1cb65f8d7862132"
|
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|
dependencies = [
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"regex-syntax",
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]
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[[package]]
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name = "regex-syntax"
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version = "0.6.25"
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||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "rustc-demangle"
|
||||||
|
version = "0.1.21"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "7ef03e0a2b150c7a90d01faf6254c9c48a41e95fb2a8c2ac1c6f0d2b9aefc342"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "sharded-slab"
|
||||||
|
version = "0.1.4"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "900fba806f70c630b0a382d0d825e17a0f19fcd059a2ade1ff237bcddf446b31"
|
||||||
|
dependencies = [
|
||||||
|
"lazy_static",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "smallvec"
|
||||||
|
version = "1.8.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "f2dd574626839106c320a323308629dcb1acfc96e32a8cba364ddc61ac23ee83"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "strsim"
|
||||||
|
version = "0.10.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "syn"
|
||||||
|
version = "1.0.91"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "b683b2b825c8eef438b77c36a06dc262294da3d5a5813fac20da149241dcd44d"
|
||||||
|
dependencies = [
|
||||||
|
"proc-macro2",
|
||||||
|
"quote",
|
||||||
|
"unicode-xid",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "thread_local"
|
||||||
|
version = "1.1.4"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "5516c27b78311c50bf42c071425c560ac799b11c30b31f87e3081965fe5e0180"
|
||||||
|
dependencies = [
|
||||||
|
"once_cell",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tracing"
|
||||||
|
version = "0.1.32"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "4a1bdf54a7c28a2bbf701e1d2233f6c77f473486b94bee4f9678da5a148dca7f"
|
||||||
|
dependencies = [
|
||||||
|
"cfg-if",
|
||||||
|
"pin-project-lite",
|
||||||
|
"tracing-attributes",
|
||||||
|
"tracing-core",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tracing-attributes"
|
||||||
|
version = "0.1.20"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "2e65ce065b4b5c53e73bb28912318cb8c9e9ad3921f1d669eb0e68b4c8143a2b"
|
||||||
|
dependencies = [
|
||||||
|
"proc-macro2",
|
||||||
|
"quote",
|
||||||
|
"syn",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tracing-core"
|
||||||
|
version = "0.1.24"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "90442985ee2f57c9e1b548ee72ae842f4a9a20e3f417cc38dbc5dc684d9bb4ee"
|
||||||
|
dependencies = [
|
||||||
|
"lazy_static",
|
||||||
|
"valuable",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tracing-error"
|
||||||
|
version = "0.2.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "d686ec1c0f384b1277f097b2f279a2ecc11afe8c133c1aabf036a27cb4cd206e"
|
||||||
|
dependencies = [
|
||||||
|
"tracing",
|
||||||
|
"tracing-subscriber",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tracing-log"
|
||||||
|
version = "0.1.2"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "a6923477a48e41c1951f1999ef8bb5a3023eb723ceadafe78ffb65dc366761e3"
|
||||||
|
dependencies = [
|
||||||
|
"lazy_static",
|
||||||
|
"log",
|
||||||
|
"tracing-core",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tracing-subscriber"
|
||||||
|
version = "0.3.10"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "b9df98b037d039d03400d9dd06b0f8ce05486b5f25e9a2d7d36196e142ebbc52"
|
||||||
|
dependencies = [
|
||||||
|
"ansi_term",
|
||||||
|
"lazy_static",
|
||||||
|
"matchers",
|
||||||
|
"regex",
|
||||||
|
"sharded-slab",
|
||||||
|
"smallvec",
|
||||||
|
"thread_local",
|
||||||
|
"tracing",
|
||||||
|
"tracing-core",
|
||||||
|
"tracing-log",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "unicode-xid"
|
||||||
|
version = "0.2.2"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "valuable"
|
||||||
|
version = "0.1.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi"
|
||||||
|
version = "0.3.9"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
|
||||||
|
dependencies = [
|
||||||
|
"winapi-i686-pc-windows-gnu",
|
||||||
|
"winapi-x86_64-pc-windows-gnu",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-i686-pc-windows-gnu"
|
||||||
|
version = "0.4.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-x86_64-pc-windows-gnu"
|
||||||
|
version = "0.4.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||||
25
fuzz/Cargo.toml
Normal file
25
fuzz/Cargo.toml
Normal file
|
|
@ -0,0 +1,25 @@
|
||||||
|
[package]
|
||||||
|
name = "crftng-intrprtrs-fuzz"
|
||||||
|
version = "0.0.0"
|
||||||
|
authors = ["Automatically generated"]
|
||||||
|
publish = false
|
||||||
|
edition = "2018"
|
||||||
|
|
||||||
|
[package.metadata]
|
||||||
|
cargo-fuzz = true
|
||||||
|
|
||||||
|
[dependencies]
|
||||||
|
libfuzzer-sys = "0.4"
|
||||||
|
|
||||||
|
[dependencies.crftng-intrprtrs]
|
||||||
|
path = ".."
|
||||||
|
|
||||||
|
# Prevent this from interfering with workspaces
|
||||||
|
[workspace]
|
||||||
|
members = ["."]
|
||||||
|
|
||||||
|
[[bin]]
|
||||||
|
name = "lexer"
|
||||||
|
path = "fuzz_targets/lexer.rs"
|
||||||
|
test = false
|
||||||
|
doc = false
|
||||||
8
fuzz/fuzz_targets/lexer.rs
Normal file
8
fuzz/fuzz_targets/lexer.rs
Normal file
|
|
@ -0,0 +1,8 @@
|
||||||
|
#![no_main]
|
||||||
|
use libfuzzer_sys::fuzz_target;
|
||||||
|
use crftng_intrprtrs::lexer;
|
||||||
|
|
||||||
|
fuzz_target!(|input: (&str, Option<&str>)| {
|
||||||
|
let mut lexer = lexer::Lexer::new(input.0, input.1);
|
||||||
|
let _ = lexer.scan_tokens().ok();
|
||||||
|
});
|
||||||
|
|
@ -40,7 +40,7 @@ pub trait ErrorWithLocation: Error {
|
||||||
|
|
||||||
#[derive(Debug)]
|
#[derive(Debug)]
|
||||||
pub struct ErrorLocationWrapper<T: Error> {
|
pub struct ErrorLocationWrapper<T: Error> {
|
||||||
inner: T,
|
pub inner: T,
|
||||||
location: OwnedLocation,
|
location: OwnedLocation,
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -6,6 +6,7 @@ pub type LexingError = crate::error::ErrorLocationWrapper<LexingErrorKind>;
|
||||||
#[derive(Debug)]
|
#[derive(Debug)]
|
||||||
pub enum LexingErrorKind {
|
pub enum LexingErrorKind {
|
||||||
UnmatchedQuote,
|
UnmatchedQuote,
|
||||||
|
IntPrimitiveTooBig,
|
||||||
UnexpectedCharacter(char),
|
UnexpectedCharacter(char),
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
@ -14,6 +15,9 @@ impl fmt::Display for LexingErrorKind {
|
||||||
match *self {
|
match *self {
|
||||||
LexingErrorKind::UnmatchedQuote => write!(f, "Unmatched \" character"),
|
LexingErrorKind::UnmatchedQuote => write!(f, "Unmatched \" character"),
|
||||||
LexingErrorKind::UnexpectedCharacter(c) => write!(f, "Unexpected character {c}"),
|
LexingErrorKind::UnexpectedCharacter(c) => write!(f, "Unexpected character {c}"),
|
||||||
|
LexingErrorKind::IntPrimitiveTooBig => {
|
||||||
|
write!(f, "Integer too large. Max value is i32_max({})", i32::MAX)
|
||||||
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
||||||
|
|
@ -30,13 +30,13 @@ impl<'a, 'b> Lexer<'a, 'b> {
|
||||||
|
|
||||||
while self.source_iter.peek().is_some() {
|
while self.source_iter.peek().is_some() {
|
||||||
match self.scan_token() {
|
match self.scan_token() {
|
||||||
Some(Ok(token)) => {
|
Ok(Some(token)) => {
|
||||||
if errors.is_empty() {
|
if errors.is_empty() {
|
||||||
tokens.push(token)
|
tokens.push(token)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
Some(Err(e)) => errors.push(e),
|
Ok(None) => (),
|
||||||
None => (),
|
Err(e) => errors.push(e),
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
@ -72,8 +72,8 @@ impl<'a, 'b> Lexer<'a, 'b> {
|
||||||
LexingError::new(error, self.source_iter.get_location(self.file).into())
|
LexingError::new(error, self.source_iter.get_location(self.file).into())
|
||||||
}
|
}
|
||||||
|
|
||||||
fn scan_token(&mut self) -> Option<Result<Token<'b>, LexingError>> {
|
fn scan_token(&mut self) -> Result<Option<Token<'b>>, LexingError> {
|
||||||
Some(Ok(match self.source_iter.next()? {
|
Ok(Some(match self.source_iter.next().unwrap() {
|
||||||
'(' => self.get_token(token::TokenType::LeftParen),
|
'(' => self.get_token(token::TokenType::LeftParen),
|
||||||
')' => self.get_token(token::TokenType::RightParen),
|
')' => self.get_token(token::TokenType::RightParen),
|
||||||
'{' => self.get_token(token::TokenType::LeftBrace),
|
'{' => self.get_token(token::TokenType::LeftBrace),
|
||||||
|
|
@ -107,8 +107,7 @@ impl<'a, 'b> Lexer<'a, 'b> {
|
||||||
),
|
),
|
||||||
'"' => {
|
'"' => {
|
||||||
let mut string = String::new();
|
let mut string = String::new();
|
||||||
let unmatched_char_error =
|
let unmatched_char_error = Err(self.get_error(LexingErrorKind::UnmatchedQuote));
|
||||||
Some(Err(self.get_error(LexingErrorKind::UnmatchedQuote)));
|
|
||||||
loop {
|
loop {
|
||||||
let next_char = self.source_iter.next();
|
let next_char = self.source_iter.next();
|
||||||
match next_char {
|
match next_char {
|
||||||
|
|
@ -126,8 +125,12 @@ impl<'a, 'b> Lexer<'a, 'b> {
|
||||||
c @ '0'..='9' => {
|
c @ '0'..='9' => {
|
||||||
let mut num: i32 = c.to_digit(10).unwrap() as i32;
|
let mut num: i32 = c.to_digit(10).unwrap() as i32;
|
||||||
while let Some(c) = self.source_iter.next_if(|c| c.is_digit(10)) {
|
while let Some(c) = self.source_iter.next_if(|c| c.is_digit(10)) {
|
||||||
num *= 10;
|
let int_primitive_too_big_err =
|
||||||
num += c.to_digit(10).unwrap() as i32;
|
|| self.get_error(LexingErrorKind::IntPrimitiveTooBig);
|
||||||
|
num = num.checked_mul(10).ok_or_else(int_primitive_too_big_err)?;
|
||||||
|
num = num
|
||||||
|
.checked_add(c.to_digit(10).unwrap() as i32)
|
||||||
|
.ok_or_else(int_primitive_too_big_err)?;
|
||||||
}
|
}
|
||||||
self.get_token(token::TokenType::Int(num))
|
self.get_token(token::TokenType::Int(num))
|
||||||
}
|
}
|
||||||
|
|
@ -156,8 +159,24 @@ impl<'a, 'b> Lexer<'a, 'b> {
|
||||||
})
|
})
|
||||||
}
|
}
|
||||||
// Ignore whitespace
|
// Ignore whitespace
|
||||||
' ' | '\r' | '\t' | '\n' => return None,
|
' ' | '\r' | '\t' | '\n' => return Ok(None),
|
||||||
c => return Some(Err(self.get_error(LexingErrorKind::UnexpectedCharacter(c)))),
|
c => return Err(self.get_error(LexingErrorKind::UnexpectedCharacter(c))),
|
||||||
}))
|
}))
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#[cfg(test)]
|
||||||
|
mod tests {
|
||||||
|
use super::*;
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn test_int_literal_too_large() {
|
||||||
|
let mut lexer = Lexer::new("2222222222222222222", None);
|
||||||
|
let errors = lexer.scan_tokens().unwrap_err();
|
||||||
|
assert_eq!(errors.len(), 1);
|
||||||
|
assert!(matches!(
|
||||||
|
errors[0].inner,
|
||||||
|
LexingErrorKind::IntPrimitiveTooBig
|
||||||
|
))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
|
||||||
|
|
@ -5,7 +5,7 @@ use tracing_subscriber::{EnvFilter, FmtSubscriber};
|
||||||
|
|
||||||
fn run_file(file: &path::Path) -> Result<(), io::Error> {
|
fn run_file(file: &path::Path) -> Result<(), io::Error> {
|
||||||
let src = fs::read_to_string(file)?;
|
let src = fs::read_to_string(file)?;
|
||||||
run(&src).unwrap();
|
println!("{:?}", run(&src).unwrap());
|
||||||
Ok(())
|
Ok(())
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue