Big project dir refactor

* split into multi member workspace in preparation for a no_std core
* env and posix stuff neatly crammed into a seperate shell project
* some pokes at interactive-devel.f
* updated ci
* removed 'l' shortcut for 'load' and update docs
* remove out of date readme content
* updated tests
* more sensible cond implementation and extra tests
* substr stdlib function with tests

Signed-off-by: Ava Affine <ava@sunnypup.io>

core/tests/test_lex.rs

@@ -0,0 +1,111 @@
+mod lex_tests {
+    use flesh::ast::lex;
+
+    #[test]
+    fn test_lex_basic_pair() {
+        let document = String::from("(hello \"world\")");
+        assert_eq!(lex(&document).unwrap().to_string(), document);
+    }
+
+    #[test]
+    fn test_lex_basic_list() {
+        let document = String::from("(hello \"world\" 1 2 3)");
+        assert_eq!(lex(&document).unwrap().to_string(), document);
+    }
+
+    #[test]
+    fn test_bad_symbol() {
+        let document = String::from("(as@dd)");
+        let output: &str = "Problem lexing document: \"Unparsable token \\\"as@dd\\\" at char 7\"";
+        assert_eq!(lex(&document).err().unwrap().0.first().unwrap().message, output.to_string(),);
+    }
+
+    #[test]
+    fn test_lex_complex_list() {
+        let document = String::from("(hello \"world\" (1 2 (1 2 3)) 1 2 3)");
+        assert_eq!(lex(&document).unwrap().to_string(), document);
+    }
+
+    #[test]
+    fn test_list_delim_in_str() {
+        let document = String::from("(\"(\")");
+        assert_eq!(lex(&document).unwrap().to_string(), document);
+    }
+
+    #[test]
+    fn test_comment_delim_in_str() {
+        let document = String::from("(\"#\")");
+        assert_eq!(lex(&document).unwrap().to_string(), document);
+    }
+
+    #[test]
+    fn test_empty_string() {
+        let document = String::from("(\"\")");
+        assert_eq!(lex(&document).unwrap().to_string(), document);
+    }
+
+    #[test]
+    fn test_unmatched_list_delim_flat() {
+        let document = String::from("(one two");
+        let output: &str = "Problem lexing document: \"Unmatched list delimiter in input\"";
+        assert_eq!(lex(&document).err().unwrap().0.first().unwrap().message, output.to_string(),);
+    }
+
+    #[test]
+    fn test_unmatched_list_delim_complex() {
+        let document = String::from("(one two (three)");
+        let output: &str = "Problem lexing document: \"Unmatched list delimiter in input\"";
+        assert_eq!(lex(&document).err().unwrap().0.first().unwrap().message, output.to_string(),);
+    }
+
+    #[test]
+    fn test_comment_1() {
+        let document = String::from("#!/bin/flesh\n(one two)");
+        let output: &str = "(one two)";
+        assert_eq!(lex(&document).unwrap().to_string(), output.to_string(),);
+    }
+
+    #[test]
+    fn test_comment_2() {
+        let document = String::from(";; big doc string\n(one two)");
+        let output: &str = "(one two)";
+        assert_eq!(lex(&document).unwrap().to_string(), output.to_string(),);
+    }
+
+    #[test]
+    fn test_postline_comment_1() {
+        let document =
+            String::from("#!/bin/flesh\n((one two)# another doc comment\n(\"three\" four))");
+        let output: &str = "((one two) (\"three\" four))";
+        assert_eq!(lex(&document).unwrap().to_string(), output.to_string(),);
+    }
+
+    #[test]
+    fn test_postline_comment_2() {
+        let document =
+            String::from("#!/bin/flesh\n((one two);;another doc comment\n(three four))");
+        let output: &str = "((one two) (three four))";
+        assert_eq!(lex(&document).unwrap().to_string(), output.to_string(),);
+    }
+
+    #[test]
+    fn test_inline_comment_1() {
+        let document = String::from("#!/flesh/flesh\n((one two)\n# another comment\nthree)");
+        let output: &str = "((one two) three)";
+        assert_eq!(lex(&document).unwrap().to_string(), output.to_string(),);
+    }
+
+    #[test]
+    fn test_inline_comment_2() {
+        let document = String::from("# head\n((one two)\n;; another comment\nthree)");
+        let output: &str = "((one two) three)";
+        assert_eq!(lex(&document).unwrap().to_string(), output.to_string(),);
+    }
+
+    #[test]
+    fn test_bad_token_list() {
+        let document = String::from("(one t(wo)");
+        let output: &str = "Problem lexing document: \"list started in middle of another token: t\"";
+        assert_eq!(lex(&document).err().unwrap().0.first().unwrap().message, output.to_string(),);
+    }
+}