pest parser
Cargo Check, Format, Fix and Test / cargo CI (push) Successful in 2m2s
Details
Cargo Check, Format, Fix and Test / cargo CI (push) Successful in 2m2s
Details
This commit is contained in:
parent
beeebe817a
commit
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GPG Key ID:
7CDD0B14851A08EF
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@ -145,6 +145,15 @@ version = "2.4.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "327762f6e5a765692301e5bb513e0d9fef63be86bbc14528052b1cd3e6f03e07"
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[[package]]
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name = "block-buffer"
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version = "0.10.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
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dependencies = [
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"generic-array",
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]
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[[package]]
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name = "bstr"
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version = "1.9.0"
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@ -296,6 +305,15 @@ version = "0.8.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "06ea2b9bc92be3c2baa9334a323ebca2d6f074ff852cd1d7b11064035cd3868f"
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[[package]]
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name = "cpufeatures"
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version = "0.2.12"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "53fe5e26ff1b7aef8bca9c6080520cfb8d9333c7568e1829cef191a9723e5504"
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dependencies = [
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"libc",
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]
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[[package]]
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name = "criterion"
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version = "0.5.1"
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@ -364,6 +382,16 @@ version = "0.8.19"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "248e3bacc7dc6baa3b21e405ee045c3047101a49145e7e9eca583ab4c2ca5345"
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[[package]]
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name = "crypto-common"
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version = "0.1.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
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dependencies = [
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"generic-array",
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"typenum",
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]
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[[package]]
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name = "cucumber"
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version = "0.20.2"
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@ -445,6 +473,16 @@ dependencies = [
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"syn 1.0.109",
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]
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[[package]]
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name = "digest"
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version = "0.10.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
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dependencies = [
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"block-buffer",
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"crypto-common",
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]
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[[package]]
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name = "drain_filter_polyfill"
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version = "0.1.3"
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@ -562,6 +600,16 @@ dependencies = [
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"slab",
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]
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[[package]]
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name = "generic-array"
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version = "0.14.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
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dependencies = [
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"typenum",
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"version_check",
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]
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[[package]]
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name = "getrandom"
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version = "0.2.12"
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@ -905,6 +953,59 @@ version = "0.6.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9555b1514d2d99d78150d3c799d4c357a3e2c2a8062cd108e93a06d9057629c5"
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[[package]]
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name = "pest"
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version = "2.7.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1f200d8d83c44a45b21764d1916299752ca035d15ecd46faca3e9a2a2bf6ad06"
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dependencies = [
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"memchr",
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"thiserror",
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"ucd-trie",
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]
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[[package]]
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name = "pest-demo"
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version = "0.1.0"
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dependencies = [
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"pest",
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"pest_derive",
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]
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[[package]]
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name = "pest_derive"
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version = "2.7.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bcd6ab1236bbdb3a49027e920e693192ebfe8913f6d60e294de57463a493cfde"
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dependencies = [
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"pest",
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"pest_generator",
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]
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[[package]]
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name = "pest_generator"
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version = "2.7.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2a31940305ffc96863a735bef7c7994a00b325a7138fdbc5bda0f1a0476d3275"
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dependencies = [
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"pest",
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"pest_meta",
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"proc-macro2",
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"quote",
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"syn 2.0.48",
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]
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[[package]]
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name = "pest_meta"
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version = "2.7.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a7ff62f5259e53b78d1af898941cdcdccfae7385cf7d793a6e55de5d05bb4b7d"
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dependencies = [
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"once_cell",
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"pest",
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"sha2",
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]
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[[package]]
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name = "pin-project"
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version = "1.1.3"
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@ -1175,6 +1276,17 @@ dependencies = [
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"serde",
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]
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[[package]]
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name = "sha2"
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version = "0.10.8"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "793db75ad2bcafc3ffa7c68b215fee268f537982cd901d132f89c6343f3a3dc8"
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dependencies = [
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"cfg-if",
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"cpufeatures",
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"digest",
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]
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[[package]]
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name = "slab"
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version = "0.4.9"
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@ -1373,6 +1485,18 @@ dependencies = [
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"syn 2.0.48",
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]
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[[package]]
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name = "typenum"
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version = "1.17.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
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[[package]]
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name = "ucd-trie"
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version = "0.1.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ed646292ffc8188ef8ea4d1e0e0150fb15a5c2e12ad9b8fc191ae7a8a7f3c4b9"
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[[package]]
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name = "unicode-ident"
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version = "1.0.12"
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@ -1397,6 +1521,12 @@ version = "0.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
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[[package]]
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name = "version_check"
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version = "0.9.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
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[[package]]
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name = "walkdir"
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version = "2.4.0"
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@ -4,6 +4,7 @@ members = [
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"members/criterion-demo",
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"members/cucumber-demo",
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"members/panic-calm",
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"members/pest-demo",
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"members/revsqrt",
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"members/serde-json-demo",
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"members/slog-demo",
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@ -11,8 +12,9 @@ members = [
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]
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default-members = [
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".",
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"members/criterion-demo",
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"members/revsqrt",
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"members/criterion-demo",
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"members/pest-demo",
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"members/serde-json-demo",
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"members/slog-demo",
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"members/cucumber-demo",
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@ -0,0 +1,10 @@
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[package]
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name = "pest-demo"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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pest = "2.6"
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pest_derive = "2.6"
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@ -0,0 +1,5 @@
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65279,1179403647,1463895090
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3.1415927,2.7182817,1.618034
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-40,-273.15
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13,42
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65537
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@ -0,0 +1,3 @@
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file = { SOI ~ (record ~ "\n")* ~ EOI }
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record = { field ~ ("," ~ field)* }
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field = { (ASCII_DIGIT | "." | "-")+ }
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@ -0,0 +1,42 @@
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use std::fs;
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use pest::Parser;
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use pest_derive::Parser;
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#[derive(Parser)]
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#[grammar = "csv.pest"]
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pub struct CSVParser;
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fn main() {
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println!("cwd: {:?}", std::env::current_dir().unwrap());
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let unparsed_file = fs::read_to_string("pest-demo/data/example.csv").expect("cannot read file");
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let file = CSVParser::parse(Rule::file, &unparsed_file)
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.expect("unsuccessful parse") // unwrap the parse result
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.next()
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.unwrap(); // get and unwrap the `file` rule; never fails
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// let mut field_sum: f64 = 0.0;
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let mut field_sum: f64 = 0.0;
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let mut record_count: u64 = 0;
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println!("{:=^80}", "");
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for record in file.into_inner() {
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match record.as_rule() {
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Rule::record => {
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print!("|");
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record_count += 1;
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for field in record.into_inner() {
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field_sum += field.as_str().parse::<f64>().unwrap();
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print!("{:^25}|", field.as_str());
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}
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println!();
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}
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Rule::EOI => (),
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_ => unreachable!(),
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}
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}
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println!("{:=^80}", "");
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println!("Sum of fields: {}", field_sum);
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println!("Number of records: {}", record_count);
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}
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