Parsing comments (which are simple)

pestfoamtest/Cargo.lock

@@ -0,0 +1,205 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
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+ "generic-array",
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+ "typenum",
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+ "ucd-trie",
+]
+
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+ "pest",
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+]
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+ "pest_meta",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
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+dependencies = [
+ "once_cell",
+ "pest",
+ "sha2",
+]
+
+[[package]]
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+dependencies = [
+ "pest",
+ "pest_derive",
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pestfoamtest/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "pestfoamtest"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+pest = "2.5.5"
+pest_derive = "2.5.5"

pestfoamtest/README.md

@@ -0,0 +1,3 @@
+# PestFoamTest
+
+Testing writing a Pest parser for Foamfiles.

pestfoamtest/src/foam.pest

@@ -0,0 +1,4 @@
+multi_comment = { "/*" ~ (!"*/" ~ ANY)* ~ "*/" }
+single_comment = { "//" ~ (!NEWLINE ~ ANY)* }
+
+field = { (ASCII_DIGIT | "." | "-")+ }

pestfoamtest/src/main.rs

@@ -0,0 +1,15 @@
+use pest::Parser;
+use pest_derive::Parser;
+
+#[derive(Parser)]
+#[grammar = "foam.pest"]
+pub struct Foam;
+
+fn main() {
+    let parse = Foam::parse(Rule::multi_comment, "/* this is comment */");
+    println!("{:?}", parse);
+    let parse = Foam::parse(Rule::single_comment, "// this is comment");
+    println!("{:?}", parse);
+    let parse = Foam::parse(Rule::field, "-273.15");
+    println!("{:?}", parse);
+}