I think I only now settled on my plan. Anyway, daily update

Cargo.lock

@@ -330,9 +330,9 @@ checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
 
 [[package]]
 name = "miniz_oxide"
-version = "0.8.5"
+version = "0.8.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e3e04debbb59698c15bacbb6d93584a8c0ca9cc3213cb423d31f760d8843ce5"
+checksum = "ff70ce3e48ae43fa075863cef62e8b43b71a4f2382229920e0df362592919430"
 dependencies = [
  "adler2",
 ]
@@ -348,6 +348,10 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "mtgott"
+version = "0.1.0"
+
 [[package]]
 name = "object"
 version = "0.36.7"
@@ -529,9 +533,9 @@ dependencies = [
 
 [[package]]
 name = "smallvec"
-version = "1.14.0"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fcf8323ef1faaee30a44a340193b1ac6814fd9b7b4e88e9d4519a3e4abe1cfd"
+checksum = "8917285742e9f3e1683f0a9c4e6b57960b7314d0b08d30d1ecd426713ee2eee9"
 
 [[package]]
 name = "socket2"
@@ -582,9 +586,9 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.44.1"
+version = "1.44.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f382da615b842244d4b8738c82ed1275e6c5dd90c459a30941cd07080b06c91a"
+checksum = "e6b88822cbe49de4185e3a4cbf8321dd487cf5fe0c5c65695fef6346371e9c48"
 dependencies = [
  "backtrace",
  "libc",
@@ -763,6 +767,7 @@ version = "0.1.0"
 dependencies = [
  "axum",
  "json5",
+ "mtgott",
  "serde_json",
  "tokio",
 ]

Cargo.toml

@@ -1,10 +1,10 @@
 [package]
 name = "yyyi_ru"
 version = "0.1.0"
-edition = "2024"
 
 [dependencies]
 axum = "0.8.3"
 tokio = { version = "1.44.1", features = ["rt-multi-thread"] }
 json5 = "0.4.1"
 serde_json = "1.0.140"
+mtgott = { path = "./mtgott" }

mtgott/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "mtgott"
+version = "0.1.0"

mtgott/Cargo.toml

@@ -0,0 +1,4 @@
+[package]
+name = "mtgott"
+version = "0.1.0"
+

mtgott/src/bin/PRIKOL.rs

@@ -0,0 +1,8 @@
+
+
+fn main() {
+    let func : & dyn for<'a> Fn(& 'a u32) -> &'a u32;
+    func = &|u: &u32| -> &u32 {u};
+    let y = 6u32;
+    println!("{}", func(&y));
+}

mtgott/src/bin/mtgott_cli.rs

@@ -0,0 +1,50 @@
+extern crate mtgott;
+
+use std::env;
+use std::process;
+use crate::mtgott::charclasses::is_bad_name;
+use crate::mtgott::dirsearch::get_root_html;
+use crate::mtgott::runtime::{Value, generate_template};
+use std::collections::HashMap;
+use mtgott::dirsearch::add_path_with_dots_to_root;
+
+fn usage() -> ! {
+    eprintln!("Usage: program <path> [-D name value]...");
+    process::exit(1);
+}
+
+fn main() {
+    let mut args = env::args();
+    args.next().unwrap();
+    let path_arg = match args.next() { Some(s) => s, None => usage(), };
+    let template_name = match args.next() { Some(s) => s, None => usage(), };
+    let mut defines: Vec<(String, String)> = Vec::new();
+    while let Some(arg) = args.next() {
+        if arg == "-D" {
+            let name = match args.next() {
+                Some(n) => n,
+                None => usage()
+            };
+            let value = match args.next() {
+                Some(v) => v,
+                None => usage()
+            };
+            for s in name.split('.') {
+                if is_bad_name(s) {
+                    eprintln!("Bad name: {}", s);
+                    process::exit(1);
+                }
+            }
+            defines.push((name, value));
+        } else {
+            usage();
+        }
+    }
+    let mut guest_root = Value::Dict(HashMap::new());
+    for (name_path, val) in defines {
+        add_path_with_dots_to_root(&mut guest_root, &name_path, Value::Str(val)).unwrap();
+    }
+    let dir_root = get_root_html(&path_arg).unwrap();
+    let res = generate_template(&dir_root, &guest_root, &template_name).unwrap();
+    print!("{res}")
+}

mtgott/src/dirsearch.rs

@@ -1,4 +1,4 @@
-use std::{fs, io, fmt};
+use std::{fs};
 use std::fs::{read_dir, metadata, canonicalize};
 use std::path::PathBuf;
 use std::error::Error;
@@ -6,7 +6,6 @@ use super::charclasses::{escape_for_html, is_bad_name};
 use super::runtime::{HigherLevelFunc, Value, DebugState, val_lambda_check_argc};
 use super::parser::{parse_one_file_simplified, parse_one_file_packed};
 use super::lambda_compilation::{plemege_to_value};
-use std::rc::Rc;
 use std::collections::HashMap;
 
 pub fn search_dir_rec_helper<F: Fn(&str) -> bool>(
@@ -46,7 +45,7 @@ pub fn search_dir_rec_helper<F: Fn(&str) -> bool>(
 pub fn search_dir<F: Fn(&str) -> bool>(p: &str, allowed_extensions: &[&str], is_valid_name: &F)
     -> Result<Vec<Vec<String>>, Box<dyn Error>> {
     let mut res: Vec<Vec<String>> = (0..allowed_extensions.len()).map(|_| Vec::new()).collect();
-    search_dir_rec_helper(&mut res, PathBuf::new(), String::new(), allowed_extensions, is_valid_name, 100)?;
+    search_dir_rec_helper(&mut res, PathBuf::from(p), String::new(), allowed_extensions, is_valid_name, 100)?;
     Ok(res)
 }
 
@@ -69,36 +68,45 @@ pub fn search_mtgott_dir(p: &str, plain_ext: &str) -> Result<MtgottDirContent, B
     })
 }
 
-/* Panics if somebody else borrowed root */
-fn add_path_to_root(root: &mut Value, slash_path: &str, obj: Value) -> Result<(), Box<dyn Error>> {
-    let parts: Vec<&str> = slash_path.split('/').collect();
+/* Panics if somebody else borrowed root. splitter is usually / or . */
+fn add_path_to_root(root: &mut Value, unsplit_path: &str, splitter: char, obj: Value) -> Result<(), Box<dyn Error>> {
+    let parts: Vec<&str> = unsplit_path.split(splitter).collect();
     let mut cur: &mut Value = root;
     assert!(parts.len() > 0);
-    for i in 0..parts.len() {
+    for i in 0usize..parts.len() {
         match cur {
             Value::Dict(hashmap) => {
-                cur = Rc::get_mut(hashmap).unwrap().entry(String::from(parts[i])).or_insert(Default::default());
+                cur = hashmap.entry(String::from(parts[i])).or_insert(Default::default());
             }
-            _ => return Err(format!("Overlapping root elements {}", parts[..i].join("/")).into())
+            _ => return Err(format!("Overlapping root elements {}", parts[..i].join(&*splitter)).into())
         }
     }
     match cur {
         Value::Int(x) if *x == 0 => {},
-        _ => return Err(format!("Overlapping root elements {}", slash_path).into()),
+        _ => return Err(format!("Overlapping root elements {}", unsplit_path).into()),
     }
+    *cur = obj;
     Ok(())
 }
 
+pub fn add_path_with_slashes_to_root(root: &mut Value, unsplit_path: &str, obj: Value) -> Result<(), Box<dyn Error>> {
+    add_path_to_root(root, unsplit_path, '/', obj)
+}
+
+pub fn add_path_with_dots_to_root(root: &mut Value, unsplit_path: &str, obj: Value) -> Result<(), Box<dyn Error>> {
+    add_path_to_root(root, unsplit_path, '.', obj)
+}
+
 pub fn get_all_templates(p: &str,  plain_ext: &str) -> Result<Value, Box<dyn Error>> {
     let source = search_mtgott_dir(p, plain_ext)?;
-    let mut res: Value = Value::Dict(Rc::new(HashMap::new()));
+    let mut res: Value = Value::Dict(HashMap::new());
     for cut_path in source.mtgott {
         let path = format!("{cut_path}.mtgott{plain_ext}");
         let text_bytes = fs::read(PathBuf::from(p).join(&path))?;
         let text = std::str::from_utf8(&text_bytes)?;
         let plemege = parse_one_file_packed(text)?;
         let compiled = plemege_to_value(plemege, &path)?;
-        add_path_to_root(&mut res, &cut_path, compiled)?
+        add_path_to_root(&mut res, &cut_path, '/', compiled)?
     }
     for cut_path in source.imtgott {
         let path = format!("{cut_path}.imtgott{plain_ext}");
@@ -106,37 +114,37 @@ pub fn get_all_templates(p: &str,  plain_ext: &str) -> Result<Value, Box<dyn Err
         let text = std::str::from_utf8(&text_bytes)?;
         let plemege = parse_one_file_simplified(text)?;
         let compiled = plemege_to_value(plemege, &path)?;
-        add_path_to_root(&mut res, &cut_path, compiled)?
+        add_path_to_root(&mut res, &cut_path, '/', compiled)?
     }
     for cut_path in source.plain {
         let path = format!("{cut_path}{plain_ext}");
         let text_bytes = fs::read(PathBuf::from(p).join(&path))?;
         let text = String::from_utf8(text_bytes)?;
-        add_path_to_root(&mut res, &cut_path, Value::Str(Rc::new(text)))?
+        add_path_to_root(&mut res, &cut_path, '/', Value::Str(text))?
     }
     Ok(res)
 }
 
 pub fn get_all_templates_plus_builtins(p: &str, plain_ext: &str, sanitize: HigherLevelFunc) -> Result<Value, Box<dyn Error>>{
     let mut root = get_all_templates(p, plain_ext)?;
-    add_path_to_root(&mut root, "sanitize", Value::Fn(sanitize))?;
-    add_path_to_root(&mut root, "cmd_tag_start", Value::Str(Rc::new(String::from("{%"))))?;
-    add_path_to_root(&mut root, "write_tag_start", Value::Str(Rc::new(String::from("{{"))))?;
-    add_path_to_root(&mut root, "roughinsert_tag_start", Value::Str(Rc::new(String::from("{["))))?;
-    add_path_to_root(&mut root, "magic_block_ending_tag", Value::Str(Rc::new(String::from("{%}"))))?;
-    add_path_to_root(&mut root, "element_ending_tag", Value::Str(Rc::new(String::from("{@}"))))?;
+    add_path_with_slashes_to_root(&mut root, "sanitize", Value::Fn(sanitize))?;
+    add_path_with_slashes_to_root(&mut root, "cmd_tag_start", Value::Str("{%".into()))?;
+    add_path_with_slashes_to_root(&mut root, "write_tag_start", Value::Str("{{".into()))?;
+    add_path_with_slashes_to_root(&mut root, "roughinsert_tag_start", Value::Str("{[".into()))?;
+    add_path_with_slashes_to_root(&mut root, "magic_block_ending_tag", Value::Str("{%}".into()))?;
+    add_path_with_slashes_to_root(&mut root, "element_ending_tag", Value::Str("{@}".into()))?;
     Ok(root)
 }
 
 pub fn get_root_html(p: &str) -> Result<Value, Box<dyn Error>>{
-    get_all_templates_plus_builtins(p, ".html", Rc::new(
-        |d_state: &DebugState,  _: &Value, args: &[&Value]| -> Result<Value, Box<dyn Error>> {
+    get_all_templates_plus_builtins(p, ".html", Box::new(
+        |d_state: &DebugState,  _: &Value, _: &Value, args: &[&Value]| -> Result<Value, Box<dyn Error>> {
             let _g = d_state.register("In sanitizer".into());
             val_lambda_check_argc(args, 1)?;
             match args[0]{
-                Value::Str(s) => Ok(Value::Str(Rc::new(escape_for_html(&s)))),
-                Value::Int(num) => Ok(Value::Str(Rc::new(num.to_string()))),
-                _ => Ok(Value::Str(Rc::new(escape_for_html(&format!("{:?}", args[0])))))
+                Value::Str(s) => Ok(Value::Str(escape_for_html(&s))),
+                Value::Int(num) => Ok(Value::Str(num.to_string())),
+                _ => Ok(Value::Str(escape_for_html(&format!("{:?}", args[0]))))
             }
         }))
 }

mtgott/src/lambda_compilation.rs

@@ -2,7 +2,6 @@ use super::runtime::*;
 use super::parser::*;
 use std::error::Error;
 use std::collections::HashMap;
-use std::rc::Rc;
 
 fn cat_vec(arr: Vec<String>) -> String {
     let total_len: usize = arr.iter().map(|s| { s.len() }).sum();
@@ -17,9 +16,10 @@ pub fn plemege_to_value(mut x: Plemege, file_path: &str) -> Result<Value, Box<dy
             for (key, thing) in map {
                 new_dict.insert(key, plemege_to_value(thing, file_path)?);
             }
-            Ok(Value::Dict(Rc::new(new_dict)))
+            Ok(Value::Dict(new_dict))
         },
         Plemege::Element(el) => {
+            // Rc::new(|d_state: &DebugState,  _: &Value, _: &Value, args: &[&Value]|)
             // todo
             Ok(Value::default())
         }

mtgott/src/parser.rs

@@ -1,5 +1,5 @@
 use std::collections::HashMap;
-use crate::mtgott::charclasses::{is_bad_name, is_digit, is_illegal_name, is_lnspace, is_normal_word_constituent, is_whitespace};
+use crate::charclasses::{is_bad_name, is_digit, is_illegal_name, is_lnspace, is_normal_word_constituent, is_whitespace};
 use std::fmt::{self, Display, Formatter};
 use std::error::Error;
 
@@ -97,7 +97,7 @@ pub enum FileParsingErrorKind {
     recursion_limit_exceeded,
 }
 
-use FileParsingErrorKind::*;
+use self::FileParsingErrorKind::*;
 
 #[derive(Debug, PartialEq, Eq)]
 pub struct FileParsingError {
@@ -396,7 +396,7 @@ impl<'a> Parser<'a> {
 
         let fin_static = |p: &Parser, tp1: usize, res: &mut Vec<SubElement>| {
             if tp1 < p.p {
-                res.push(SubElement::Static(String::from(&self.text[tp1..p.p])))
+                res.push(SubElement::Static(String::from(&p.text[tp1..p.p])))
             }
         };
 
@@ -421,9 +421,7 @@ impl<'a> Parser<'a> {
                 if !matches!(expr, Expression::None){
                     res.push(SubElement::InsertExpr(
                         Expression::Call(
-                            Box::new(Expression::Attribute(
-                                Box::new(Expression::Root), String::from("sanitize")
-                            )),
+                            Box::new(Expression::ToplevelAttribute("sanitize".into())),
                             vec![expr])
                     ));
                 }
@@ -663,7 +661,7 @@ impl<'a> Parser<'a> {
             }
             let mut bg: Expression = match arg_names.iter().rposition(|&n| n == toplevel_name) {
                 Some(i) => Expression::Argument(i as u64),
-                None => Expression::Attribute(Box::new(Expression::Root), String::from(toplevel_name))
+                None => Expression::ToplevelAttribute(toplevel_name.into())
             };
             loop {
                 self.skip_whitespace();

mtgott/src/runtime.rs

@@ -1,9 +1,7 @@
 use std::collections::HashMap;
 use std::fmt;
 use std::fmt::Debug;
-use std::ops::{Index, IndexMut};
 use std::error::Error;
-use std::rc::Rc;
 use std::cell::RefCell;
 
 pub struct DebugStateGuard<'a> (
@@ -27,16 +25,22 @@ impl<'a> DebugState {
     }
 }
 
-pub type HigherLevelFunc = Rc<dyn Fn(&DebugState, &Value, &[&Value]) -> Result<Value, Box<dyn Error>>>;
+pub type HigherLevelFunc = Box<dyn Fn(&DebugState, &Value, &[&Value]) -> Result<Value, Box<dyn Error>>>;
 
 pub enum Value {
-    Str(Rc<String>),
+    Str(String),
     Int(u64),
-    Arr(Rc<Vec<Value>>),
-    Dict(Rc<HashMap<String, Value>>),
+    Arr(Vec<Value>),
+    Dict(HashMap<String, Value>),
     Fn(HigherLevelFunc),
 }
 
+impl Value {
+    fn as_dict(&self) -> &HashMap<String, Value> {
+        match self { Value::Dict(s) => s, _ => panic!(), }
+    }
+}
+
 /* Useful utility to put in every function you see */
 pub fn val_lambda_check_argc(argv: &[&Value], argc_required: usize) -> Result<(), String> {
     if argv.len() == argc_required {
@@ -46,7 +50,6 @@ pub fn val_lambda_check_argc(argv: &[&Value], argc_required: usize) -> Result<()
     }
 }
 
-
 impl Default for Value {
     fn default() -> Self {
         Value::Int(0)
@@ -82,3 +85,46 @@ impl<'t> PartialEq for Value {
         }
     }
 }
+
+fn get_sub_value<'a>(root: &'a Value, name: &str) -> Result<&'a Value, String> {
+    let mut cur: &Value = root;
+    let parts = name.split(".").map(String::from).collect();
+    for i in 0usize..parts.len() {
+        match cur {
+            Value::Dict(hashmap) => {
+                match hashmap.get(&parts[i]) {
+                    Some(nxt ) => { cur = nxt; }
+                    None => return Err(format!("No such root element: {}", parts[..=i].join("/")))
+                }
+            }
+            _ => return Err(format!("Not a dictionary: {}", parts[..i].join("/")))
+        }
+    }
+    Ok(cur)
+}
+
+/* If some `top-level-attribute` was not found in root, we search for it in guest_root.
+ * This is our way of passing arguments for template */
+pub fn generate_template(root: &Value, guest_root: &Value, name: &str) -> Result<String, Box<dyn Error>> {
+    let main = get_sub_value(root, name)?;
+    let main = match main {
+        Value::Dict(p) => {
+            match p.get("main".into()) {
+                Some(v2) => v2,
+                None => return Err(Box::new(format!("Called {name} template is a dictionary without `main()`")))
+            }
+        }
+        _ => main,
+    };
+     match main {
+        Value::Fn(main_func) => {
+            let d_stack = DebugState(RefCell::new(Vec::new()));
+            let rv = main_func(&d_stack, root, &[guest_root])?;
+            match rv {
+                 Value::Str(answer) => Ok(answer),
+                 _ => Err(Box::new(format!("template {name} returned not a string")))
+            }
+        }
+        _ => Err(Box::new(format!("Called {name} template that is not a function")))
+    }
+}

src/bin/mtgott_cli.rs

@@ -1,41 +0,0 @@
-use std::env;
-use std::process;
-use std::path::PathBuf;
-use yyyi_ru::mtgott::charclasses::is_bad_name;
-use yyyi_ru::mtgott::dirsearch::{search_dir};
-
-fn usage() -> ! {
-    eprintln!("Usage: program <path> [-D name value]...");
-    process::exit(1);
-}
-
-fn main() {
-    let mut args = env::args();
-    args.next().unwrap();
-    let path_arg = match args.next() {
-        Some(s) => s,
-        None => usage(),
-    };
-    let mut defines: Vec<(Vec<String>, String)> = Vec::new();
-    while let Some(arg) = args.next() {
-        if arg == "-D" {
-            let name = match args.next() {
-                Some(n) => n,
-                None => usage()
-            };
-            let value = match args.next() {
-                Some(v) => v,
-                None => usage()
-            };
-            defines.push((name.split('.').map(|s| {
-                if is_bad_name(s) {
-                    eprintln!("Bad name: {}", s);
-                    process::exit(1);
-                }
-                String::from(s)
-            }).collect(), value));
-        } else {
-            usage();
-        }
-    }
-}

src/lib.rs

@@ -1,2 +1 @@
 pub mod yyyi_ru;
-pub mod mtgott;