not needing to specify header levels

src/law.rs

@@ -1,7 +1,9 @@
-use log::debug;
+use log::{debug, error, info};
 use serde::{Deserialize, Serialize};
 use std::{
+    cell::RefCell,
     fmt::{self, Display},
+    rc::Rc,
     sync::Arc,
 };
 
@@ -13,73 +15,6 @@ pub(crate) struct Law {
     header: Vec<Heading>,
 }
 
-#[derive(Debug, Serialize, Deserialize, PartialEq)]
-struct Heading {
-    name: String, //1. Hauptstück; 3. Theil; ...
-    desc: Option<String>,
-    content: HeadingContent, // 1. Theil; 1. Subtheil; ...
-}
-
-impl Display for Heading {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        if let Some(desc) = &self.desc {
-            f.write_str(&format!("{} ({desc})\n", self.name))
-        } else {
-            f.write_str(&format!("{}\n", self.name))
-        }
-    }
-}
-
-#[derive(Debug, Serialize, Deserialize, PartialEq)]
-enum HeadingContent {
-    Paragraph(Vec<Section>),
-    Heading(Vec<Heading>),
-}
-
-fn add_from_node(cur: &ClassifierInstance, builder: &LawBuilder) -> Heading {
-    let children = builder.get_by_parent(&cur.name);
-    if !children.is_empty() {
-        let mut ret = Vec::new();
-        for child in children {
-            ret.push(add_from_node(&child, builder));
-        }
-        Heading {
-            name: cur.name.clone(),
-            desc: cur.desc.clone(),
-            content: HeadingContent::Heading(ret),
-        }
-    } else {
-        Heading {
-            name: cur.name.clone(),
-            desc: cur.desc.clone(),
-            content: HeadingContent::Paragraph(cur.sections.clone()),
-        }
-    }
-}
-
-impl From<LawBuilder> for Law {
-    fn from(builder: LawBuilder) -> Self {
-        let cur: Vec<Classifier> = builder
-            .classifiers
-            .clone()
-            .into_iter()
-            .filter(|c| c.parent_index.is_none())
-            .collect();
-
-        let mut ret = Vec::new();
-        for class in cur {
-            for child in class.instances {
-                ret.push(add_from_node(&child, &builder));
-            }
-        }
-
-        Self {
-            name: builder.name,
-            header: ret,
-        }
-    }
-}
-
 impl Law {
     pub(crate) fn to_md(&self) {
         println!("# {}", self.name);
@@ -106,6 +41,88 @@ impl Law {
     }
 }
 
+impl From<LawBuilder> for Law {
+    fn from(builder: LawBuilder) -> Self {
+        let mut ret = Vec::new();
+
+        for header in builder.header {
+            ret.push(Heading {
+                name: header.borrow().name.clone(),
+                desc: header.borrow().desc.clone(),
+                content: header.borrow().clone().into(),
+            })
+        }
+
+        Self {
+            name: builder.name,
+            header: ret,
+        }
+    }
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq)]
+struct Heading {
+    name: String, //1. Hauptstück; 3. Theil; ...
+    desc: Option<String>,
+    content: HeadingContent, // 1. Theil; 1. Subtheil; ...
+}
+
+impl Display for Heading {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        if let Some(desc) = &self.desc {
+            f.write_str(&format!("{} ({desc})\n", self.name))
+        } else {
+            f.write_str(&format!("{}\n", self.name))
+        }
+    }
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq)]
+enum HeadingContent {
+    Paragraph(Vec<Section>),
+    Heading(Vec<Heading>),
+}
+
+impl From<ClassifierInstance> for HeadingContent {
+    fn from(value: ClassifierInstance) -> Self {
+        if value.sections.is_empty() {
+            let mut ret = Vec::new();
+            for child in value.children {
+                ret.push(Heading {
+                    name: child.borrow().name.clone(),
+                    desc: child.borrow().desc.clone(),
+                    content: child.borrow().clone().into(),
+                })
+            }
+
+            Self::Heading(ret)
+        } else {
+            Self::Paragraph(value.sections)
+        }
+    }
+}
+
+fn add_from_node(cur: &ClassifierInstance, builder: &LawBuilder) -> Heading {
+    let children = builder.get_by_parent(&cur.name);
+    if !children.is_empty() {
+        let mut ret = Vec::new();
+        for child in children {
+            ret.push(add_from_node(&child, builder));
+        }
+        Heading {
+            name: cur.name.clone(),
+            desc: cur.desc.clone(),
+            content: HeadingContent::Heading(ret),
+        }
+    } else {
+        Heading {
+            name: cur.name.clone(),
+            desc: cur.desc.clone(),
+            content: HeadingContent::Paragraph(cur.sections.clone()),
+        }
+    }
+}
+
 pub(crate) fn contains(classifier_name: &str, instance_name: &str) -> bool {
     instance_name
         .to_lowercase()
@@ -127,7 +144,7 @@ fn starts_with_uppercaseletter(_classifier_name: &str, instance_name: &str) -> b
 }
 
 /// Is used to generate a law struct. It's organized mainly by classifier.
-#[derive(Debug, PartialEq)]
+#[derive(Debug)]
 pub(crate) struct LawBuilder {
     /// Name of the law
     pub(crate) name: String, //ABGB, UrhG
@@ -135,7 +152,10 @@ pub(crate) struct LawBuilder {
     /// Structure of the law text
     pub(crate) classifiers: Vec<Classifier>,
 
-    pub(crate) last_header_index: Option<usize>,
+    /// Instances
+    pub(crate) header: Vec<Rc<RefCell<ClassifierInstance>>>,
+
+    last_instance: Option<Rc<RefCell<ClassifierInstance>>>,
 
     /// Stores the header of the next paragraph
     pub(crate) next_para_header: Option<String>,
@@ -144,45 +164,36 @@ pub(crate) struct LawBuilder {
     pub(crate) history: Vec<String>,
 }
 
+impl PartialEq for LawBuilder {
+    fn eq(&self, other: &Self) -> bool {
+        self.name == other.name
+            && self.classifiers == other.classifiers
+            && self.header == other.header
+            && self.next_para_header == other.next_para_header
+    }
+}
+
 impl LawBuilder {
-    #[cfg(test)]
     pub(crate) fn test(name: &str) -> Self {
-        let mut last_header_index = None;
         let mut classifiers = Vec::new();
-        if name == "UrhG" {
-            let hauptstueck = Classifier::new("Hauptstück", Arc::new(&contains));
-            classifiers.push(hauptstueck.clone());
 
-            let mut abschnitt = Classifier::new("Abschnitt", Arc::new(&contains));
-            abschnitt.set_parent(0);
-            classifiers.push(abschnitt);
-
-            let mut numbered_header =
-                Classifier::new("Numbered Header", Arc::new(&starts_with_number));
-            numbered_header.set_parent(9999);
-            classifiers.push(numbered_header);
-        } else if name == "test" {
-            let h1 = Classifier::new("h1", Arc::new(&contains));
-            classifiers.push(h1);
-
-            let mut h2 = Classifier::new("h2", Arc::new(&contains));
-            h2.set_parent(0);
-            classifiers.push(h2);
-
-            let mut h3 = Classifier::new("h3", Arc::new(&contains));
-            h3.set_parent(1);
-            classifiers.push(h3);
-        } else if name == "no-headers" {
-            let mut h1 = Classifier::new("", Arc::new(&contains));
-            h1.add_instance(ClassifierInstance::new("", 0));
-            last_header_index = Some(0);
-            classifiers.push(h1);
+        if name == "new" {
+            classifiers.push(Classifier::new("a", Arc::new(&contains)).root());
+            classifiers.push(Classifier::new("b", Arc::new(&contains)));
+            classifiers.push(Classifier::new("c", Arc::new(&contains)));
+            classifiers.push(Classifier::new("d", Arc::new(&contains)));
+        } else if name == "UrhG" {
+            classifiers.push(Classifier::new("Hauptstück", Arc::new(&contains)).root());
+            classifiers.push(Classifier::new("Abschnitt", Arc::new(&contains)));
+            classifiers.push(Classifier::new("Number", Arc::new(&starts_with_number)));
         }
+
         Self {
             name: name.into(),
             classifiers,
+            header: Vec::new(),
             next_para_header: None,
-            last_header_index,
+            last_instance: None,
             #[cfg(test)]
             history: Vec::new(),
         }
@@ -190,73 +201,23 @@ impl LawBuilder {
 
     /// Creates a new law builder. Adds classifier for known law texts.
     pub(crate) fn new(name: &str) -> Law {
-        //TODO: return Law (not LawBuilder)
         let mut classifiers = Vec::new();
 
         let mut law_id = None;
         if name == "UrhG" {
             law_id = Some(10001848);
 
-            let hauptstueck = Classifier::new("Hauptstück", Arc::new(&contains));
-            classifiers.push(hauptstueck.clone());
-
-            let mut abschnitt = Classifier::new("Abschnitt", Arc::new(&contains));
-            abschnitt.set_parent(0);
-            classifiers.push(abschnitt);
-
-            let mut numbered_header =
-                Classifier::new("Numbered Header", Arc::new(&starts_with_number));
-            numbered_header.set_parent(9999);
-            classifiers.push(numbered_header);
-        } else if name == "MSchG" {
-            law_id = Some(10002180);
-
-            let abschnitt = Classifier::new("Abschnitt", Arc::new(&contains));
-            classifiers.push(abschnitt.clone());
-
-            let mut numbered_header =
-                Classifier::new("Numbered Header", Arc::new(&starts_with_number));
-            numbered_header.set_parent(0);
-            classifiers.push(numbered_header);
-        } else if name == "FSG" {
-            law_id = Some(10003898);
-
-            let artikel = Classifier::new("Artikel", Arc::new(&contains));
-            classifiers.push(artikel);
-
-            let mut abschnitt = Classifier::new(" Abschnitt", Arc::new(&contains));
-            abschnitt.set_parent(0);
-            classifiers.push(abschnitt);
-
-            let mut unterabschnitt = Classifier::new("Unterabschnitt", Arc::new(&contains));
-            unterabschnitt.set_parent(1);
-            classifiers.push(unterabschnitt);
-
-            let mut hauptstueck = Classifier::new("Hauptstück", Arc::new(&contains));
-            hauptstueck.set_parent(9999);
-            classifiers.push(hauptstueck);
-
-            let mut numbered_header =
-                Classifier::new("Numbered Header", Arc::new(&starts_with_letter));
-            numbered_header.set_parent(9999);
-            classifiers.push(numbered_header);
-
-            let mut uppercase_headers =
-                Classifier::new("Numbered Header", Arc::new(&starts_with_uppercaseletter));
-            uppercase_headers.set_parent(9999);
-            classifiers.push(uppercase_headers);
-
-            let mut number_header =
-                Classifier::new("Numbered Header", Arc::new(&starts_with_number));
-            number_header.set_parent(9999);
-            classifiers.push(number_header);
+            classifiers.push(Classifier::new("Hauptstück", Arc::new(&contains)).root());
+            classifiers.push(Classifier::new("Abschnitt", Arc::new(&contains)));
+            classifiers.push(Classifier::new("Number", Arc::new(&starts_with_number)));
         }
 
         let mut builder = Self {
             name: name.into(),
             classifiers,
+            header: Vec::new(),
             next_para_header: None,
-            last_header_index: None,
+            last_instance: None,
             #[cfg(test)]
             history: Vec::new(),
         };
@@ -273,71 +234,95 @@ impl LawBuilder {
         builder.into()
     }
 
+    fn responsible_classifier(&self, name: &str) -> Option<&Classifier> {
+        for c in &self.classifiers {
+            if c.used_for(name) {
+                return Some(&c);
+            }
+        }
+        None
+    }
+
+    fn find_parent(
+        &self,
+        cur: Option<Rc<RefCell<ClassifierInstance>>>,
+        class: &Classifier,
+    ) -> Option<Rc<RefCell<ClassifierInstance>>> {
+        let mut cur = cur;
+        while let Some(c) = cur {
+            let (cur_name, cur_parent) = {
+                let c_borrow = c.borrow();
+                (c_borrow.name.clone(), c_borrow.parent.clone())
+            };
+
+            let cur_responsible_class = self.responsible_classifier(&cur_name).unwrap();
+            if cur_responsible_class == class {
+                return c.borrow_mut().get_parent();
+            }
+
+            cur = cur_parent;
+        }
+        None
+    }
+
     /// Sets a new header.
     pub(crate) fn new_header(&mut self, name: &str) {
+        let name = name.trim();
         #[cfg(test)]
         self.history.push(format!("New_header: {name}"));
-        debug!("new_header={name}");
-        let classifier_index = self
-            .classifiers
-            .iter()
-            .position(|class| class.used_for(name));
 
-        match classifier_index {
-            Some(index) => {
-                let mut class = ClassifierInstance::new(name.trim(), index);
+        info!("new_header={name}");
 
-                if self.classifiers[index]
-                    .parent_index
-                    .is_some_and(|x| x == 9999)
-                {
-                    if self.classifiers[self.last_header_index.unwrap()]
-                        .parent_index
-                        .is_some_and(|x| x == 9999)
-                    {
-                        class.add_parent(
-                            self.classifiers[self.classifiers[self.last_header_index.unwrap()]
-                                .instances
-                                .last()
-                                .unwrap()
-                                .parent
-                                .clone()
-                                .unwrap()
-                                .idx]
-                                .instances
-                                .last()
-                                .unwrap(),
-                        )
+        let responsible_class = self
+            .responsible_classifier(name)
+            .expect(&format!("No classifier for '{name}'"));
+
+        let mut heading: ClassifierInstance = name.into();
+
+        if let Some(last_instance) = &self.last_instance {
+            let cur = Some(last_instance.clone());
+
+            let parent = &self.find_parent(cur, responsible_class);
+            println!("parnet={parent:#?}");
+            match parent {
+                None => {
+                    if responsible_class.root {
+                        let c = Rc::new(RefCell::new(heading));
+                        self.header.push(c.clone());
+                        self.last_instance = Some(c.clone());
                     } else {
-                        class.add_parent(
-                            self.classifiers[self.last_header_index.unwrap()]
-                                .instances
-                                .last()
-                                .unwrap(),
-                        );
+                        heading.set_parent(last_instance.clone());
+                        let c = Rc::new(RefCell::new(heading));
+                        last_instance.borrow_mut().add_child(c.clone());
+                        self.last_instance = Some(c.clone());
                     }
-                } else if let Some(parent) = self.classifiers[index].parent_index {
-                    class.add_parent(self.classifiers[parent].instances.last().unwrap());
                 }
-
-                self.classifiers[index].add_instance(class);
-                self.last_header_index = Some(index);
+                Some(parent) => {
+                    heading.set_parent(parent.clone());
+                    let c = Rc::new(RefCell::new(heading));
+                    parent.borrow_mut().add_child(c.clone());
+                    self.last_instance = Some(c.clone());
+                }
             }
-            None => panic!("No classifier for {name}"),
+        } else {
+            let c = Rc::new(RefCell::new(heading));
+            self.header.push(c.clone());
+            self.last_instance = Some(c.clone());
         }
     }
 
     /// Sets a new description for the last classifier.
     pub(crate) fn new_desc(&mut self, desc: &str) {
+        let desc = desc.trim();
         #[cfg(test)]
         self.history.push(format!("New desc: {desc}"));
 
         debug!("new_desc={desc}");
-        if let Some(index) = self.last_header_index {
-            self.classifiers[index].set_desc(desc);
-        } else {
-            panic!("Not possible");
-        }
+        self.last_instance
+            .clone()
+            .unwrap()
+            .borrow_mut()
+            .set_desc(desc);
     }
 
     /// Adds a new paragraph.
@@ -349,17 +334,19 @@ impl LawBuilder {
         ));
 
         debug!("new_par=par:{par};content:{content:#?}");
-        if let Some(index) = self.last_header_index {
-            let section = Section {
+
+        let par_header = self.next_para_header.clone();
+        self.next_para_header = None;
+
+        self.last_instance
+            .clone()
+            .expect("Expect at least one classifier")
+            .borrow_mut()
+            .add_section(Section {
                 symb: par,
+                par_header,
                 content,
-                par_header: self.next_para_header.clone(),
-            };
-            self.next_para_header = None;
-            self.classifiers[index].add_section(section);
-        } else {
-            panic!("Expected at least one classifier");
-        }
+            })
     }
 
     /// Next paragraph has a header, store its name.
@@ -373,15 +360,15 @@ impl LawBuilder {
     fn get_by_parent(&self, name: &String) -> Vec<ClassifierInstance> {
         let mut ret = Vec::new();
 
-        for class in &self.classifiers {
-            for inst in &class.instances {
-                if let Some(parent) = &inst.parent {
-                    if &parent.name == name {
-                        ret.push(inst.clone());
-                    }
-                }
-            }
-        }
+        //        for class in &self.classifiers {
+        //            for inst in &class.instances {
+        //                if let Some(parent) = &inst.parent {
+        //                    if &parent.name == name {
+        //                        ret.push(inst.clone());
+        //                    }
+        //                }
+        //            }
+        //        }
 
         ret
     }
@@ -411,26 +398,38 @@ impl fmt::Display for Section {
     }
 }
 
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, PartialEq)]
 pub(crate) struct ClassifierInstance {
-    pub(crate) name: String,
+    pub(crate) name: String, //e.g. 1 Theilstück
     pub(crate) desc: Option<String>,
     pub(crate) sections: Vec<Section>,
-    pub(crate) parent: Option<Box<ClassifierInstance>>,
-    pub(crate) idx: usize,
+    pub(crate) children: Vec<Rc<RefCell<ClassifierInstance>>>,
+    pub(crate) parent: Option<Rc<RefCell<ClassifierInstance>>>,
 }
 
 impl ClassifierInstance {
-    fn new(name: &str, idx: usize) -> Self {
+    fn new(name: &str) -> Self {
         Self {
             name: name.into(),
             desc: None,
-            sections: Vec::new(),
             parent: None,
-            idx,
+            sections: Vec::new(),
+            children: Vec::new(),
         }
     }
 
+    fn set_parent(&mut self, parent: Rc<RefCell<ClassifierInstance>>) {
+        self.parent = Some(parent);
+    }
+
+    fn get_parent(&self) -> Option<Rc<RefCell<ClassifierInstance>>> {
+        self.parent.clone()
+    }
+
+    fn add_child(&mut self, child: Rc<RefCell<ClassifierInstance>>) {
+        self.children.push(child);
+    }
+
     fn set_desc(&mut self, desc: &str) {
         self.desc = Some(desc.into());
     }
@@ -438,35 +437,37 @@ impl ClassifierInstance {
     fn add_section(&mut self, section: Section) {
         self.sections.push(section);
     }
+}
 
-    fn add_parent(&mut self, parent: &ClassifierInstance) {
-        self.parent = Some(Box::new(parent.clone()));
+impl std::fmt::Debug for ClassifierInstance {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("Classifier")
+            .field("name", &self.name)
+            .field("desc", &self.desc)
+            .field("sections", &self.sections)
+            .field("children", &self.children)
+            .finish()
+    }
+}
+
+impl From<&str> for ClassifierInstance {
+    fn from(value: &str) -> Self {
+        Self::new(value)
     }
 }
 
 #[derive(Clone)]
 pub(crate) struct Classifier {
     pub(crate) name: String, // Hauptstück, Theil, Abschnitt, ol
-    pub(crate) parent_index: Option<usize>,
-    pub(crate) instances: Vec<ClassifierInstance>,
     pub(crate) used_for_fn: Arc<dyn Fn(&str, &str) -> bool>,
+    pub(crate) instances: Vec<ClassifierInstance>,
+    pub(crate) child: Vec<Rc<RefCell<Classifier>>>,
+    pub(crate) root: bool,
 }
 
 impl PartialEq for Classifier {
     fn eq(&self, other: &Self) -> bool {
         self.name == other.name
-            && self.parent_index == other.parent_index
-            && self.instances == other.instances
-    }
-}
-
-impl std::fmt::Debug for Classifier {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.debug_struct("Classifier")
-            .field("name", &self.name)
-            .field("parent_index", &self.parent_index)
-            .field("instances", &self.instances)
-            .finish()
     }
 }
 
@@ -474,30 +475,37 @@ impl Classifier {
     fn new(name: &str, used_for_fn: Arc<dyn Fn(&str, &str) -> bool>) -> Self {
         Self {
             name: name.into(),
-            parent_index: None,
-            instances: Vec::new(),
             used_for_fn,
+            child: Vec::new(),
+            instances: Vec::new(),
+            root: false,
         }
     }
 
-    fn set_parent(&mut self, parent: usize) {
-        self.parent_index = Some(parent);
-    }
-
-    fn add_instance(&mut self, name: ClassifierInstance) {
-        self.instances.push(name);
-    }
-
-    fn set_desc(&mut self, desc: &str) {
-        self.instances.last_mut().unwrap().set_desc(desc.trim());
+    fn root(self) -> Self {
+        Self { root: true, ..self }
     }
 
     fn used_for(&self, name: &str) -> bool {
         (self.used_for_fn)(&self.name, name)
     }
 
-    fn add_section(&mut self, section: Section) {
-        self.instances.last_mut().unwrap().add_section(section);
+    pub(crate) fn add_child(&mut self, child: Rc<RefCell<Classifier>>) {
+        self.child.push(child);
+    }
+
+    pub(crate) fn add_instance(&mut self, instance: ClassifierInstance) {
+        self.instances.push(instance);
+    }
+}
+
+impl std::fmt::Debug for Classifier {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("Classifier")
+            .field("name", &self.name)
+            .field("instances", &self.instances)
+            .field("child", &self.child)
+            .finish()
     }
 }
 

src/main.rs

@@ -42,7 +42,7 @@ impl From<roxmltree::Error> for Error {
 
 fn main() {
     env_logger::init();
-    let law = LawBuilder::new("FSG");
+    let law = LawBuilder::new("UrhG");
 
     law.to_md();
 }

src/par/mod.rs

@@ -119,7 +119,6 @@ mod tests {
         entries.sort_by_key(|entry| entry.file_name());
 
         for entry in entries {
-            println!("{entry:?}");
             let mut file = File::open(path.join(entry.file_name())).unwrap();
             let mut json = String::new();
             file.read_to_string(&mut json).unwrap();