Refactoring
This commit is contained in:
bad
parent
c14cd20d8c
commit
8d3354ec97
13 changed files with 481 additions and 79 deletions
227
Cargo.lock
generated
227
Cargo.lock
generated
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@ -2,6 +2,21 @@
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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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@ -11,33 +26,186 @@ dependencies = [
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"winapi",
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]
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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 = "darling"
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version = "0.13.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d0d720b8683f8dd83c65155f0530560cba68cd2bf395f6513a483caee57ff7f4"
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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 = "0.13.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7a340f241d2ceed1deb47ae36c4144b2707ec7dd0b649f894cb39bb595986324"
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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 = "0.13.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "72c41b3b7352feb3211a0d743dc5700a4e3b60f51bd2b368892d1e0f9a95f44b"
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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 = "0.6.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9289ed2c0440a6536e65119725cf91fc2c6b5e513bfd2e36e1134d7cca6ca12f"
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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"
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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 = "log"
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version = "0.4.14"
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@ -47,6 +215,12 @@ 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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@ -56,12 +230,43 @@ 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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[[package]]
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name = "miniz_oxide"
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version = "0.4.4"
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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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[[package]]
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name = "pin-project-lite"
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version = "0.2.8"
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@ -110,6 +315,12 @@ version = "0.6.25"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
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[[package]]
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name = "rustc-demangle"
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version = "0.1.21"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7ef03e0a2b150c7a90d01faf6254c9c48a41e95fb2a8c2ac1c6f0d2b9aefc342"
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[[package]]
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name = "sharded-slab"
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version = "0.1.4"
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@ -125,6 +336,12 @@ version = "1.8.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f2dd574626839106c320a323308629dcb1acfc96e32a8cba364ddc61ac23ee83"
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[[package]]
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name = "strsim"
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version = "0.10.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
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[[package]]
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name = "syn"
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version = "1.0.89"
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@ -178,6 +395,16 @@ dependencies = [
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"valuable",
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]
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[[package]]
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name = "tracing-error"
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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 = "d686ec1c0f384b1277f097b2f279a2ecc11afe8c133c1aabf036a27cb4cd206e"
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dependencies = [
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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 = "tracing-log"
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version = "0.1.2"
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@ -4,6 +4,9 @@ version = "0.1.0"
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edition = "2021"
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[dependencies]
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color-eyre = "0.6.1"
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dotenv = "0.15.0"
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from_variants = "1.0.0"
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match_any = "1.0.1"
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tracing = "0.1.32"
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tracing-subscriber = { version = "0.3.9", features = ["env-filter"] }
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use crate::lexer::token;
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use from_variants::FromVariants;
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use match_any::match_any;
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use std::fmt::{Debug, Display};
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use crate::lexer::token;
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#[derive(FromVariants)]
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pub enum ASTNode {
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BinaryExpr(BinaryExpr),
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GroupingExpr(GroupingExpr),
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UnaryExpr(UnaryExpr),
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}
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impl From<BinaryExpr> for ASTNode {
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fn from(b: BinaryExpr) -> Self {
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ASTNode::BinaryExpr(b)
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}
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}
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macro_rules! all_variants {
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($expr:expr, $val_name:ident => $expr_arm:expr) => {
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{
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use match_any::match_any;
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use $crate::ast::astnode::*;
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match_any!($expr, ASTNode::BinaryExpr($val_name) | ASTNode::GroupingExpr($val_name) | ASTNode::Literal($val_name) | ASTNode::UnaryExpr($val_name) => $expr_arm)
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}
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impl From<GroupingExpr> for ASTNode {
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fn from(g: GroupingExpr) -> Self {
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Self::GroupingExpr(g)
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}
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}
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impl From<Literal> for ASTNode {
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fn from(l: Literal) -> Self {
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Self::Literal(l)
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}
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}
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impl From<UnaryExpr> for ASTNode {
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fn from(u: UnaryExpr) -> Self {
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Self::UnaryExpr(u)
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}
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};
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}
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pub(crate) use all_variants;
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impl Debug for ASTNode {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match self {
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Self::BinaryExpr(b) => b.fmt(f),
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Self::GroupingExpr(g) => g.fmt(f),
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Self::Literal(l) => l.fmt(f),
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Self::UnaryExpr(u) => u.fmt(f),
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}
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all_variants!(self, n => n.fmt(f))
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}
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}
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@ -75,7 +60,6 @@ impl Display for UnaryOperator {
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}
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pub enum Operator {
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Bang,
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BangEqual,
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Equal,
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EqualEqual,
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@ -100,7 +84,6 @@ impl TryFrom<token::TokenType> for Operator {
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fn try_from(value: token::TokenType) -> Result<Self, Self::Error> {
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Ok(match value {
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token::TokenType::Bang => Self::Bang,
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token::TokenType::BangEqual => Self::BangEqual,
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token::TokenType::Equal => Self::Equal,
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token::TokenType::EqualEqual => Self::EqualEqual,
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@ -120,7 +103,6 @@ impl Display for Operator {
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f,
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"{}",
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match *self {
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Operator::Bang => "!",
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Operator::Less => "<",
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Operator::Equal => "=",
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Operator::Greater => ">",
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@ -133,18 +115,18 @@ impl Display for Operator {
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}
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}
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#[derive(Debug)]
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#[derive(Debug, Clone)]
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pub enum Literal {
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String(String),
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Int(i64),
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Float(f64),
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Int(i32),
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Float(f32),
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Bool(bool),
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}
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pub struct BinaryExpr {
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left: Box<ASTNode>,
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operator: Operator,
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right: Box<ASTNode>,
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pub left: Box<ASTNode>,
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pub operator: Operator,
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pub right: Box<ASTNode>,
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}
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impl BinaryExpr {
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|
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@ -157,7 +139,7 @@ impl BinaryExpr {
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}
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}
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pub struct GroupingExpr(Box<ASTNode>);
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pub struct GroupingExpr(pub Box<ASTNode>);
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||||
|
||||
impl GroupingExpr {
|
||||
pub(crate) fn new(expr: Box<ASTNode>) -> Self {
|
||||
|
|
@ -166,8 +148,8 @@ impl GroupingExpr {
|
|||
}
|
||||
|
||||
pub struct UnaryExpr {
|
||||
operator: UnaryOperator,
|
||||
right: Box<ASTNode>,
|
||||
pub operator: UnaryOperator,
|
||||
pub right: Box<ASTNode>,
|
||||
}
|
||||
|
||||
impl UnaryExpr {
|
||||
|
|
|
|||
|
|
@ -10,19 +10,20 @@ type Result<T> = StdResult<T, ASTParsingError>;
|
|||
pub enum ASTParsingError {
|
||||
UnmatchedBrace,
|
||||
}
|
||||
|
||||
impl std::fmt::Display for ASTParsingError {
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||||
fn fmt(&self, _f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||||
todo!()
|
||||
}
|
||||
}
|
||||
impl std::error::Error for ASTParsingError {}
|
||||
|
||||
pub struct Parser<T: Iterator<Item = token::Token>> {
|
||||
pub struct Parser<'a, T: Iterator<Item = token::Token<'a>>> {
|
||||
token_iter: iter::Peekable<T>,
|
||||
}
|
||||
|
||||
impl<T: Iterator<Item = token::Token>> Parser<T> {
|
||||
pub fn new(iter: T) -> Parser<T> {
|
||||
impl<'a, T: Iterator<Item = token::Token<'a>>> Parser<'a, T> {
|
||||
pub fn new(iter: T) -> Parser<'a, T> {
|
||||
Parser {
|
||||
token_iter: iter.peekable(),
|
||||
}
|
||||
|
|
@ -153,7 +154,7 @@ impl<T: Iterator<Item = token::Token>> Parser<T> {
|
|||
.next_if(|v| matches!(v.token_type, TokenType::RightParen))
|
||||
{
|
||||
Some(_) => return Ok(group.into()),
|
||||
None => return Err(todo!()),
|
||||
None => return Err(ASTParsingError::UnmatchedBrace),
|
||||
}
|
||||
}
|
||||
Some(a) => panic!("{:#?}", a),
|
||||
|
|
|
|||
39
src/error.rs
Normal file
39
src/error.rs
Normal file
|
|
@ -0,0 +1,39 @@
|
|||
use std::error::Error;
|
||||
|
||||
#[derive(Debug, Clone, Copy)]
|
||||
pub struct Location<'a> {
|
||||
pub line: usize,
|
||||
pub col: usize,
|
||||
pub file: Option<&'a str>,
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
pub struct OwnedLocation {
|
||||
pub line: usize,
|
||||
pub col: usize,
|
||||
pub file: Option<String>,
|
||||
}
|
||||
|
||||
impl<'a> From<Location<'a>> for OwnedLocation {
|
||||
fn from(l: Location<'a>) -> OwnedLocation {
|
||||
OwnedLocation {
|
||||
line: l.line,
|
||||
col: l.col,
|
||||
file: l.file.map(|v| v.to_string()),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a> From<&'a OwnedLocation> for Location<'a> {
|
||||
fn from(l: &'a OwnedLocation) -> Location<'a> {
|
||||
Location {
|
||||
line: l.line,
|
||||
col: l.col,
|
||||
file: l.file.as_ref().map(|v| v.as_str()),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub trait ErrorWithLocation: Error {
|
||||
fn get_location(&self) -> Location;
|
||||
}
|
||||
53
src/interpreter/ast_walker.rs
Normal file
53
src/interpreter/ast_walker.rs
Normal file
|
|
@ -0,0 +1,53 @@
|
|||
use super::types;
|
||||
use crate::ast::astnode::{self, UnaryOperator};
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct RuntimeError;
|
||||
|
||||
pub trait Interpret {
|
||||
fn interpret(&self) -> Result<types::Value, RuntimeError>;
|
||||
}
|
||||
|
||||
impl Interpret for astnode::ASTNode {
|
||||
fn interpret(&self) -> Result<types::Value, RuntimeError> {
|
||||
astnode::all_variants!(self, n => n.interpret())
|
||||
}
|
||||
}
|
||||
|
||||
impl Interpret for astnode::Literal {
|
||||
fn interpret(&self) -> Result<types::Value, RuntimeError> {
|
||||
Ok(self.clone().into())
|
||||
}
|
||||
}
|
||||
|
||||
impl Interpret for astnode::BinaryExpr {
|
||||
fn interpret(&self) -> Result<types::Value, RuntimeError> {
|
||||
let left_val = self.left.interpret().expect("expected lval");
|
||||
let right_val = self.right.interpret().expect("expected rval");
|
||||
match self.operator {
|
||||
astnode::Operator::BangEqual => Ok((left_val != right_val).into()),
|
||||
astnode::Operator::Less => Ok((left_val < right_val).into()),
|
||||
astnode::Operator::LessEqual => Ok((left_val <= right_val).into()),
|
||||
astnode::Operator::Greater => Ok((left_val > right_val).into()),
|
||||
astnode::Operator::GreaterEqual => Ok((left_val >= right_val).into()),
|
||||
astnode::Operator::EqualEqual => Ok((left_val == right_val).into()),
|
||||
astnode::Operator::Equal => todo!(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Interpret for astnode::UnaryExpr {
|
||||
fn interpret(&self) -> Result<types::Value, RuntimeError> {
|
||||
let _val = self.right.interpret();
|
||||
match self.operator {
|
||||
UnaryOperator::Bang => todo!(),
|
||||
UnaryOperator::Minus => todo!(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Interpret for astnode::GroupingExpr {
|
||||
fn interpret(&self) -> Result<types::Value, RuntimeError> {
|
||||
self.0.interpret()
|
||||
}
|
||||
}
|
||||
2
src/interpreter/mod.rs
Normal file
2
src/interpreter/mod.rs
Normal file
|
|
@ -0,0 +1,2 @@
|
|||
pub mod ast_walker;
|
||||
pub mod types;
|
||||
25
src/interpreter/types.rs
Normal file
25
src/interpreter/types.rs
Normal file
|
|
@ -0,0 +1,25 @@
|
|||
use crate::ast::astnode;
|
||||
use from_variants::FromVariants;
|
||||
|
||||
#[derive(Debug, PartialEq, PartialOrd, FromVariants)]
|
||||
pub enum Primitive {
|
||||
Int(i32),
|
||||
Float(f32),
|
||||
Bool(bool),
|
||||
Null,
|
||||
}
|
||||
|
||||
#[derive(Debug, PartialEq, PartialOrd, FromVariants)]
|
||||
pub enum Value {
|
||||
#[from_variants(into)]
|
||||
Primitive(Primitive),
|
||||
}
|
||||
|
||||
impl From<astnode::Literal> for Value {
|
||||
fn from(l: astnode::Literal) -> Self {
|
||||
match_any::match_any!(l,
|
||||
astnode::Literal::Int(v) | astnode::Literal::Bool(v)| astnode::Literal::Float(v) => v.into(),
|
||||
astnode::Literal::String(_s) => todo!()
|
||||
)
|
||||
}
|
||||
}
|
||||
|
|
@ -1,15 +1,22 @@
|
|||
use crate::error::{ErrorWithLocation, Location, OwnedLocation};
|
||||
use core::fmt;
|
||||
use std::error::Error;
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct LexingError {
|
||||
pub line: usize,
|
||||
pub location: OwnedLocation,
|
||||
pub kind: LexingErrorKind,
|
||||
}
|
||||
|
||||
impl fmt::Display for LexingError {
|
||||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
||||
write!(f, "Error: {}\n on line: {}", self.kind, self.line)
|
||||
write!(f, "Error: {}", self.kind)
|
||||
}
|
||||
}
|
||||
|
||||
impl ErrorWithLocation for LexingError {
|
||||
fn get_location<'a>(&'a self) -> Location<'a> {
|
||||
(&self.location).into()
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
62
src/lexer/lexer_iter.rs
Normal file
62
src/lexer/lexer_iter.rs
Normal file
|
|
@ -0,0 +1,62 @@
|
|||
use crate::error::Location;
|
||||
use std::str::Chars;
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct LexerIter<'a> {
|
||||
inner: Chars<'a>,
|
||||
line: usize,
|
||||
col: usize,
|
||||
}
|
||||
|
||||
impl<'a> Iterator for LexerIter<'a> {
|
||||
type Item = char;
|
||||
fn next(&mut self) -> Option<Self::Item> {
|
||||
let char = self.inner.next()?;
|
||||
self.col += 1;
|
||||
|
||||
if char == '\n' {
|
||||
self.line += 1;
|
||||
self.col = 1;
|
||||
}
|
||||
|
||||
Some(char)
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a> LexerIter<'a> {
|
||||
pub fn new(src: &'a str) -> Self {
|
||||
Self {
|
||||
inner: src.chars(),
|
||||
line: 0,
|
||||
col: 0,
|
||||
}
|
||||
}
|
||||
|
||||
pub fn peek(&self) -> Option<char> {
|
||||
self.as_str().chars().next()
|
||||
}
|
||||
|
||||
pub fn as_str(&'a self) -> &'a str {
|
||||
self.inner.as_str()
|
||||
}
|
||||
|
||||
pub fn next_if(&mut self, func: impl FnOnce(char) -> bool) -> Option<char> {
|
||||
if func(self.peek()?) {
|
||||
self.next()
|
||||
} else {
|
||||
None
|
||||
}
|
||||
}
|
||||
|
||||
pub fn next_if_eq(&mut self, expected: char) -> Option<char> {
|
||||
self.next_if(|c| c == expected)
|
||||
}
|
||||
|
||||
pub fn get_location<'b>(&self, file: Option<&'b str>) -> Location<'b> {
|
||||
Location {
|
||||
line: self.line,
|
||||
col: self.col,
|
||||
file,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -1,7 +1,7 @@
|
|||
mod error;
|
||||
mod lexer_iter;
|
||||
pub mod token;
|
||||
use std::iter;
|
||||
use std::str::Chars;
|
||||
use lexer_iter::LexerIter;
|
||||
|
||||
pub use error::LexingError;
|
||||
|
||||
|
|
@ -9,18 +9,18 @@ use self::error::LexingErrorKind;
|
|||
use self::token::Token;
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct Lexer<'a> {
|
||||
pub struct Lexer<'a, 'b> {
|
||||
file: Option<&'b str>,
|
||||
_source: &'a str,
|
||||
source_iter: iter::Peekable<Chars<'a>>,
|
||||
line: usize,
|
||||
source_iter: LexerIter<'a>,
|
||||
}
|
||||
|
||||
impl<'a> Lexer<'a> {
|
||||
pub fn new(code: &'a str) -> Lexer<'a> {
|
||||
impl<'a, 'b> Lexer<'a, 'b> {
|
||||
pub fn new(code: &'a str, file: Option<&'b str>) -> Lexer<'a, 'b> {
|
||||
return Lexer {
|
||||
_source: code,
|
||||
source_iter: code.chars().peekable(),
|
||||
line: 0,
|
||||
source_iter: LexerIter::new(code),
|
||||
file,
|
||||
};
|
||||
}
|
||||
|
||||
|
|
@ -47,10 +47,10 @@ impl<'a> Lexer<'a> {
|
|||
}
|
||||
}
|
||||
|
||||
fn get_token(&self, token_type: token::TokenType) -> token::Token {
|
||||
fn get_token(&self, token_type: token::TokenType) -> token::Token<'b> {
|
||||
token::Token {
|
||||
token_type,
|
||||
line: self.line,
|
||||
location: self.source_iter.get_location(self.file),
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -59,16 +59,16 @@ impl<'a> Lexer<'a> {
|
|||
to_eq: char,
|
||||
if_eq_type: token::TokenType,
|
||||
else_type: token::TokenType,
|
||||
) -> token::Token {
|
||||
) -> token::Token<'b> {
|
||||
let token_type = self
|
||||
.source_iter
|
||||
.next_if_eq(&to_eq)
|
||||
.next_if_eq(to_eq)
|
||||
.map(|_| if_eq_type)
|
||||
.unwrap_or(else_type);
|
||||
self.get_token(token_type)
|
||||
}
|
||||
|
||||
fn scan_token(&mut self) -> Option<Result<Token, LexingError>> {
|
||||
fn scan_token(&mut self) -> Option<Result<Token<'b>, LexingError>> {
|
||||
Some(Ok(match self.source_iter.next()? {
|
||||
'(' => self.get_token(token::TokenType::LeftParen),
|
||||
')' => self.get_token(token::TokenType::RightParen),
|
||||
|
|
@ -104,15 +104,12 @@ impl<'a> Lexer<'a> {
|
|||
'"' => {
|
||||
let mut string = String::new();
|
||||
let unmatched_char_error = Some(Err(LexingError {
|
||||
line: self.line,
|
||||
kind: LexingErrorKind::UnmatchedQuote,
|
||||
location: self.source_iter.get_location(self.file).into(),
|
||||
}));
|
||||
|
||||
loop {
|
||||
let next_char = self.source_iter.next();
|
||||
if let Some('\n') = next_char {
|
||||
self.line += 1;
|
||||
}
|
||||
match next_char {
|
||||
Some('"') => break,
|
||||
Some('\\') => match self.source_iter.next() {
|
||||
|
|
@ -126,10 +123,10 @@ impl<'a> Lexer<'a> {
|
|||
self.get_token(token::TokenType::String(string))
|
||||
}
|
||||
c @ '0'..='9' => {
|
||||
let mut num: i64 = c.to_digit(10).unwrap() as i64;
|
||||
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)) {
|
||||
num *= 10;
|
||||
num += c.to_digit(10).unwrap() as i64;
|
||||
num += c.to_digit(10).unwrap() as i32;
|
||||
}
|
||||
self.get_token(token::TokenType::Int(num))
|
||||
}
|
||||
|
|
@ -158,14 +155,10 @@ impl<'a> Lexer<'a> {
|
|||
})
|
||||
}
|
||||
// Ignore whitespace
|
||||
' ' | '\r' | '\t' => return None,
|
||||
'\n' => {
|
||||
self.line += 1;
|
||||
return None;
|
||||
}
|
||||
' ' | '\r' | '\t' | '\n' => return None,
|
||||
c => {
|
||||
return Some(Err(LexingError {
|
||||
line: self.line,
|
||||
location: self.source_iter.get_location(self.file).into(),
|
||||
kind: LexingErrorKind::UnexpectedCharacter(c),
|
||||
}))
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,7 +1,9 @@
|
|||
use crate::error::Location;
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct Token {
|
||||
pub struct Token<'a> {
|
||||
pub token_type: TokenType,
|
||||
pub line: usize,
|
||||
pub location: Location<'a>,
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
|
|
@ -29,8 +31,8 @@ pub enum TokenType {
|
|||
|
||||
Identifier(String),
|
||||
String(String),
|
||||
Int(i64),
|
||||
Float(f64),
|
||||
Int(i32),
|
||||
Float(f32),
|
||||
|
||||
And,
|
||||
Else,
|
||||
|
|
|
|||
|
|
@ -1,6 +1,9 @@
|
|||
mod ast;
|
||||
mod error;
|
||||
mod interpreter;
|
||||
mod lexer;
|
||||
|
||||
use interpreter::ast_walker::Interpret;
|
||||
use lexer::Lexer;
|
||||
use std::{fs, io, path};
|
||||
use tracing::Level;
|
||||
|
|
@ -27,22 +30,25 @@ fn run_repl() {
|
|||
}
|
||||
|
||||
fn run(code: &str) -> Result<(), Vec<lexer::LexingError>> {
|
||||
let mut lexer = Lexer::new(code);
|
||||
let mut lexer = Lexer::new(code, None);
|
||||
let tokens = lexer.scan_tokens()?;
|
||||
println!("{:?}", tokens);
|
||||
let mut parser = crate::ast::parser::Parser::new(tokens.into_iter());
|
||||
let expressions = parser.scan_expressions().unwrap();
|
||||
println!("{:?}", expressions);
|
||||
println!("{:?}", expressions[0].interpret());
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn main() {
|
||||
dotenv::dotenv().ok();
|
||||
color_eyre::install().expect("Failed to install color-eyre");
|
||||
let subscriber = FmtSubscriber::builder()
|
||||
.with_max_level(Level::TRACE)
|
||||
.with_env_filter(EnvFilter::from_env("LOG"))
|
||||
.finish();
|
||||
|
||||
tracing::subscriber::set_global_default(subscriber).unwrap();
|
||||
|
||||
if let Some(file) = std::env::args_os().nth(1) {
|
||||
|
|
|
|||
Loading…
Reference in a new issue