minimal, comments, and ast

147285b7 · Per Lindgren · 57b000aa · 147285b7 · 147285b7 · 147285b7
Commit 147285b7 authored 4 years ago by Per Lindgren
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
 # Changelog for the repository

+## 2020-09-03
+- Added src/comment 
+    - single and multiline comments
+
+- Added src/ast
+    - abstract syntax tree example
 ## 2020-08-31
 - Initial README.md
 - Setup simple example
\ No newline at end of file
--- a/Cargo.lock
+++ b/Cargo.lock
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "aho-corasick"
+version = "0.7.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "043164d8ba5c4c3035fec9bbee8647c0261d788f3474306f93bb65901cae0e86"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "arrayref"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4c527152e37cf757a3f78aae5a06fbeefdb07ccc535c980a3208ee3060dd544"
+
+[[package]]
+name = "arrayvec"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cff77d8686867eceff3105329d4698d96c2391c176d5d03adc90c7389162b5b8"
+
+[[package]]
+name = "ascii-canvas"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff8eb72df928aafb99fe5d37b383f2fe25bd2a765e3e5f7c365916b6f2463a29"
+dependencies = [
+ "term",
+]
+
+[[package]]
+name = "atty"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "winapi",
+]
+
+[[package]]
+name = "autocfg"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
+
+[[package]]
+name = "base64"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3441f0f7b02788e948e47f457ca01f1d7e6d92c693bc132c22b087d3141c03ff"
+
+[[package]]
+name = "bit-set"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e11e16035ea35e4e5997b393eacbf6f63983188f7a2ad25bfb13465f5ad59de"
+dependencies = [
+ "bit-vec",
+]
+
+[[package]]
+name = "bit-vec"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f0dc55f2d8a1a85650ac47858bb001b4c0dd73d79e3c455a842925e68d29cd3"
+
+[[package]]
+name = "blake2b_simd"
+version = "0.5.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d8fb2d74254a3a0b5cac33ac9f8ed0e44aa50378d9dbb2e5d83bd21ed1dc2c8a"
+dependencies = [
+ "arrayref",
+ "arrayvec",
+ "constant_time_eq",
+]
+
+[[package]]
+name = "block-buffer"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0940dc441f31689269e10ac70eb1002a3a1d3ad1390e030043662eb7fe4688b"
+dependencies = [
+ "block-padding",
+ "byte-tools",
+ "byteorder",
+ "generic-array",
+]
+
+[[package]]
+name = "block-padding"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa79dedbb091f449f1f39e53edf88d5dbe95f895dae6135a8d7b881fb5af73f5"
+dependencies = [
+ "byte-tools",
+]
+
+[[package]]
+name = "byte-tools"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
+
+[[package]]
+name = "byteorder"
+version = "1.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
+
+[[package]]
+name = "cfg-if"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+
+[[package]]
+name = "constant_time_eq"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3c7c73a2d1e9fc0886a08b93e98eb643461230d5f1925e4036204d5f2e261a8"
+dependencies = [
+ "autocfg",
+ "cfg-if",
+ "lazy_static",
+]
+
+[[package]]
+name = "d7050e_2020"
+version = "0.1.0"
+dependencies = [
+ "lalrpop",
+ "lalrpop-util",
+ "regex",
+]
+
+[[package]]
+name = "diff"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e25ea47919b1560c4e3b7fe0aaab9becf5b84a10325ddf7db0f0ba5e1026499"
+
+[[package]]
+name = "digest"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3d0c8c8752312f9713efd397ff63acb9f85585afbf179282e720e7704954dd5"
+dependencies = [
+ "generic-array",
+]
+
+[[package]]
+name = "dirs"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3fd78930633bd1c6e35c4b42b1df7b0cbc6bc191146e512bb3bedf243fcc3901"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi",
+]
+
+[[package]]
+name = "docopt"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f525a586d310c87df72ebcd98009e57f1cc030c8c268305287a476beb653969"
+dependencies = [
+ "lazy_static",
+ "regex",
+ "serde",
+ "strsim",
+]
+
+[[package]]
+name = "either"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd56b59865bce947ac5958779cfa508f6c3b9497cc762b7e24a12d11ccde2c4f"
+
+[[package]]
+name = "ena"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7402b94a93c24e742487327a7cd839dc9d36fec9de9fb25b09f2dae459f36c3"
+dependencies = [
+ "log",
+]
+
+[[package]]
+name = "fake-simd"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e88a8acf291dafb59c2d96e8f59828f3838bb1a70398823ade51a84de6a6deed"
+
+[[package]]
+name = "fixedbitset"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37ab347416e802de484e4d03c7316c48f1ecb56574dfd4a46a80f173ce1de04d"
+
+[[package]]
+name = "generic-array"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
+dependencies = [
+ "typenum",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.1.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
+[[package]]
+name = "hashbrown"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e91b62f79061a0bc2e046024cb7ba44b08419ed238ecbd9adbd787434b9e8c25"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "hermit-abi"
+version = "0.1.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3deed196b6e7f9e44a2ae8d94225d80302d81208b1bb673fd21fe634645c85a9"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "indexmap"
+version = "1.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e47a3566dd4fd4eec714ae6ceabdee0caec795be835c223d92c2d40f1e8cf1c"
+dependencies = [
+ "autocfg",
+ "hashbrown",
+]
+
+[[package]]
+name = "itertools"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "284f18f85651fe11e8a991b2adb42cb078325c996ed026d994719efcfca1d54b"
+dependencies = [
+ "either",
+]
+
+[[package]]
+name = "lalrpop"
+version = "0.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d6f55673d283313791404be21209bb433f128f7e5c451986df107eb5fdbd68d2"
+dependencies = [
+ "ascii-canvas",
+ "atty",
+ "bit-set",
+ "diff",
+ "docopt",
+ "ena",
+ "itertools",
+ "lalrpop-util",
+ "petgraph",
+ "regex",
+ "regex-syntax",
+ "serde",
+ "serde_derive",
+ "sha2",
+ "string_cache",
+ "term",
+ "unicode-xid",
+]
+
+[[package]]
+name = "lalrpop-util"
+version = "0.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7e88f15a7d31dfa8fb607986819039127f0161058a3b248a146142d276cbd28"
+dependencies = [
+ "regex",
+]
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "libc"
+version = "0.2.76"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "755456fae044e6fa1ebbbd1b3e902ae19e73097ed4ed87bb79934a867c007bc3"
+
+[[package]]
+name = "log"
+version = "0.4.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fabed175da42fed1fa0746b0ea71f412aa9d35e76e95e59b192c64b9dc2bf8b"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "memchr"
+version = "2.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
+
+[[package]]
+name = "new_debug_unreachable"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e4a24736216ec316047a1fc4252e27dabb04218aa4a3f37c6e7ddbf1f9782b54"
+
+[[package]]
+name = "opaque-debug"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2839e79665f131bdb5782e51f2c6c9599c133c6098982a54c794358bf432529c"
+
+[[package]]
+name = "petgraph"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "467d164a6de56270bd7c4d070df81d07beace25012d5103ced4e9ff08d6afdb7"
+dependencies = [
+ "fixedbitset",
+ "indexmap",
+]
+
+[[package]]
+name = "phf_shared"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c00cf8b9eafe68dde5e9eaa2cef8ee84a9336a47d566ec55ca16589633b65af7"
+dependencies = [
+ "siphasher",
+]
+
+[[package]]
+name = "precomputed-hash"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04f5f085b5d71e2188cb8271e5da0161ad52c3f227a661a3c135fdf28e258b12"
+dependencies = [
+ "unicode-xid",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "redox_syscall"
+version = "0.1.57"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41cc0f7e4d5d4544e8861606a285bb08d3e70712ccc7d2b84d7c0ccfaf4b05ce"
+
+[[package]]
+name = "redox_users"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de0737333e7a9502c789a36d7c7fa6092a49895d4faa31ca5df163857ded2e9d"
+dependencies = [
+ "getrandom",
+ "redox_syscall",
+ "rust-argon2",
+]
+
+[[package]]
+name = "regex"
+version = "1.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c3780fcf44b193bc4d09f36d2a3c87b251da4a046c87795a0d35f4f927ad8e6"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+ "thread_local",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.6.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26412eb97c6b088a6997e05f69403a802a92d520de2f8e63c2b65f9e0f47c4e8"
+
+[[package]]
+name = "rust-argon2"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9dab61250775933275e84053ac235621dfb739556d5c54a2f2e9313b7cf43a19"
+dependencies = [
+ "base64",
+ "blake2b_simd",
+ "constant_time_eq",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "serde"
+version = "1.0.115"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e54c9a88f2da7238af84b5101443f0c0d0a3bbdc455e34a5c9497b1903ed55d5"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.115"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "609feed1d0a73cc36a0182a840a9b37b4a82f0b1150369f0536a9e3f2a31dc48"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "sha2"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a256f46ea78a0c0d9ff00077504903ac881a1dafdc20da66545699e7776b3e69"
+dependencies = [
+ "block-buffer",
+ "digest",
+ "fake-simd",
+ "opaque-debug",
+]
+
+[[package]]
+name = "siphasher"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa8f3741c7372e75519bd9346068370c9cdaabcc1f9599cbcf2a2719352286b7"
+
+[[package]]
+name = "string_cache"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2940c75beb4e3bf3a494cef919a747a2cb81e52571e212bfbd185074add7208a"
+dependencies = [
+ "lazy_static",
+ "new_debug_unreachable",
+ "phf_shared",
+ "precomputed-hash",
+ "serde",
+]
+
+[[package]]
+name = "strsim"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6446ced80d6c486436db5c078dde11a9f73d42b57fb273121e160b84f63d894c"
+
+[[package]]
+name = "syn"
+version = "1.0.39"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "891d8d6567fe7c7f8835a3a98af4208f3846fba258c1bc3c31d6e506239f11f9"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
+]
+
+[[package]]
+name = "term"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "edd106a334b7657c10b7c540a0106114feadeb4dc314513e97df481d5d966f42"
+dependencies = [
+ "byteorder",
+ "dirs",
+ "winapi",
+]
+
+[[package]]
+name = "thread_local"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
+dependencies = [
+ "lazy_static",
+]
+
+[[package]]
+name = "typenum"
+version = "1.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "373c8a200f9e67a0c95e62a4f52fbf80c23b4381c05a17845531982fa99e6b33"
+
+[[package]]
+name = "unicode-xid"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
+
+[[package]]
+name = "wasi"
+version = "0.9.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
+
+[[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"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,3 +19,11 @@ regex = "1.3.9"
 [[bin]]
 name = "minimal"
 path = "src/minimal/main.rs"
+
+[[bin]]
+name = "comments"
+path = "src/comments/main.rs"
+
+[[bin]]
+name = "ast"
+path = "src/ast/main.rs"
--- a/src/ast/ast.rs
+++ b/src/ast/ast.rs
+// ast
+
+#[derive(Debug)]
+pub enum NumOrId {
+    Num(usize),
+    Id(String),
+}
\ No newline at end of file
--- a/src/ast/main.rs
+++ b/src/ast/main.rs
+use lalrpop_util::lalrpop_mod;
+
+lalrpop_mod!(pub parser, "/ast/parser.rs");
+
+use parser::*;
+
+pub mod ast;
+
+fn main() {
+    println!("minimal");
+    println!("{:?}", NumOrIdParser::new().parse("123"));
+    println!("{:?}", NumOrIdParser::new().parse("a1_a"));
+}
+
+#[test]
+fn parse_num_or_id() {
+    // println!("{:?}", NumOrIdParser::new().parse("123"));
+    // println!("{:?}", NumOrIdParser::new().parse("a1_a"));
+}
--- a/src/ast/parser.lalrpop
+++ b/src/ast/parser.lalrpop
+use std::str::FromStr;
+
+use crate::ast::*;
+
+grammar;
+
+pub NumOrId : NumOrId = {
+    Num => NumOrId::Num(<>),
+    Id => NumOrId::Id(<>),
+}
+ 
+pub Num: usize = {
+    r"[0-9]+" => usize::from_str(<>).unwrap(),
+};
+
+pub Id: String = {
+    r"([a-z]|[A-Z])([a-z]|[A-Z]|[0-9]|_)*" => String::from_str(<>).unwrap(),
+};
--- a/src/comments/main.rs
+++ b/src/comments/main.rs
+use lalrpop_util::lalrpop_mod;
+
+lalrpop_mod!(pub parser, "/comments/parser.rs");
+
+use parser::*;
+
+fn main() {
+    println!("comments");
+}
+
+#[test]
+fn parse_id() {
+    println!(
+        "{:?}",
+        IdParser::new().parse(
+            "
+
+            //a1_a //
+
+            /* 
+            a1_a
+            */
+            a1_a
+            "
+        )
+    );
+}
+
+#[test]
+fn parse_num() {
+    println!("{:?}", NumParser::new().parse("123"));
+}
+
+#[test]
+fn parse_num_or_id() {
+    println!("{:?}", NumOrIdParser::new().parse("123"));
+    println!("{:?}", NumOrIdParser::new().parse("a1_a"));
+}
--- a/src/comments/parser.lalrpop
+++ b/src/comments/parser.lalrpop
+use std::str::FromStr;
+
+grammar;
+
+match {
+    // The default whitespace skipping is disabled an `ignore pattern` is specified
+    r"\s*" => { }, 
+    // Skip `// comments`
+    r"//[^\n\r]*" => { }, 
+    // Skip `/* comments */`
+    r"/\*([^\*]*\*+[^\*/])*([^\*]*\*+|[^\*])*\*/" => { },  
+    _
+}
+
+pub NumOrId = {
+    Num => <>.to_string(),
+    Id,
+}
+
+pub Num: usize = {
+    r"[0-9]+" => usize::from_str(<>).unwrap(),
+};
+
+pub Id: String = {
+    r"([a-z]|[A-Z])([a-z]|[A-Z]|[0-9]|_)*" => String::from_str(<>).unwrap(),
+};
+
+// lets try to break down the multi-line comment
+//  
+//  should allow patterns like
+//  /*
+//  ...
+//  */
+//  and
+//  /* /*
+//  */
+//  */
+//  but reject patterns like
+//  /* /*
+//  */
+//  and
+//  /* */ */
+//  
+//  Rather tricky right...
+//  
+//  /\*([^\*]*\*+[^\*/])*([^\*]*\*+|[^\*])*\*/
+//  the outer  "/\* ... \*/" requires start and end "/*" ... "*/"
+//  so let's look closer at "([^\*]*\*+[^\*/])*([^\*]*\*+|[^\*])*"
+//  the trailing "*", just means any number of 
+//  "[^\*]*\*+[^\*/])*([^\*]*\*+|[^\*]"
+//
+//  "[^\*]*\*+[^\*/])*"
+//  "[^\*]*"" any number or Not("*"), e.g. 0123
+//  "\*" one or many "*", e.g. *, or ****
+//  .... ehhh I gave up, regexp is haaaaaaarrrrrrrd, another day perhaps
\ No newline at end of file
--- a/src/main.rs
+++ b/src/main.rs
@@ -5,11 +5,11 @@ lalrpop_mod!(pub grammar);
 use grammar::*;

 fn main() {
-    println!("hello world");
+    println!("Parse an Id {:?}", IdParser::new().parse("abcd"));
 }

 #[test] 
 fn hello() {
-    println!("Hello in test")
+    println!("Parse an Id {:?}", IdParser::new().parse("abcd"));
 }

--- a/src/minimal/main.rs
+++ b/src/minimal/main.rs
@@ -4,29 +4,10 @@ lalrpop_mod!(pub parser, "/minimal/parser.rs");

 use parser::*;

-fn main() {}
-
-#[test]
-fn parse_id() {
-    println!(
-        "{:?}",
-        IdParser::new().parse(
-            "
-
-            //a1_a //
-
-            /* 
-            a1_a
-            */
-            a1_a
-            "
-        )
-    );
-}
-
-#[test]
-fn parse_num() {
-    println!("{:?}", NumParser::new().parse("123"));
+fn main() {
+    println!("minimal");
+    println!("{:?}", NumOrIdParser::new().parse("123"));
+    println!("{:?}", NumOrIdParser::new().parse("a1_a"));
 }

 #[test]

--- a/src/minimal/parser.lalrpop
+++ b/src/minimal/parser.lalrpop
@@ -2,16 +2,6 @@ use std::str::FromStr;

 grammar;

-match {
-    // The default whitespace skipping is disabled an `ignore pattern` is specified
-    r"\s*" => { }, 
-    // Skip `// comments`
-    r"//[^\n\r]*" => { }, 
-    // Skip `/* comments */`
-    r"/\*([^\*]*\*+[^\*/])*([^\*]*\*+|[^\*])*\*/" => { },  
-    _
-}
-
 pub NumOrId = {
    Num => <>.to_string(),
    Id,
@@ -24,32 +14,3 @@ pub Num: usize = {
 pub Id: String = {
    r"([a-z]|[A-Z])([a-z]|[A-Z]|[0-9]|_)*" => String::from_str(<>).unwrap(),
 };
-
-// lets try to break down the multi-line comment
-//  
-//  should allow patterns like
-//  /*
-//  ...
-//  */
-//  and
-//  /* /*
-//  */
-//  */
-//  but reject patterns like
-//  /* /*
-//  */
-//  and
-//  /* */ */
-//  
-//  Rather tricky right...
-//  
-//  /\*([^\*]*\*+[^\*/])*([^\*]*\*+|[^\*])*\*/
-//  the outer  "/\* ... \*/" requires start and end "/*" ... "*/"
-//  so let's look closer at "([^\*]*\*+[^\*/])*([^\*]*\*+|[^\*])*"
-//  the trailing "*", just means any number of 
-//  "[^\*]*\*+[^\*/])*([^\*]*\*+|[^\*]"
-//
-//  "[^\*]*\*+[^\*/])*"
-//  "[^\*]*"" any number or Not("*"), e.g. 0123
-//  "\*" one or many "*", e.g. *, or ****
-//  .... ehhh I gave up, regexp is haaaaaaarrrrrrrd, another day perhaps
\ No newline at end of file