Rename 'markup' to 'structure'

examples/bank_architecture/bank.vis

@@ -1,4 +1,4 @@
-markup {
+structure {
   lanes {
     functions {
       calc: "Calculation"

grammar.txt

@@ -1,5 +1,5 @@
-vis: markup | styles
-markup: "markup:" nodes
+vis: structure styles
+structure: "structure:" nodes
 elements: "{" element* "}"
 element: node | edge
 node: (id (":" title)? nodes?) | edgenode

src/lib.rs

@@ -8,7 +8,7 @@ mod tokens;
 
 #[derive(Debug)]
 pub struct Vis {
-    pub markup: Vec<Element>,
+    pub structure: Vec<Element>,
     pub styles: Vec<StyleNode>,
 }
 

src/parser.rs

@@ -13,7 +13,7 @@ pub fn parse_vis(contents: &str) -> anyhow::Result<Vis> {
     let mut parser = Parser::new(tokens);
 
     Ok(Vis {
-        markup: parser.markup()?,
+        structure: parser.structure()?,
         styles: parser.styles()?,
     })
 }
@@ -28,8 +28,8 @@ impl Parser {
         Self { tokens, current: 0 }
     }
 
-    fn markup(&mut self) -> anyhow::Result<Vec<Element>> {
-        if self.match_token(Markup) {
+    fn structure(&mut self) -> anyhow::Result<Vec<Element>> {
+        if self.match_token(Structure) {
             self.elements()
         } else {
             Ok(vec![])

src/tokens.rs

@@ -4,7 +4,7 @@ use TokenType::*;
 
 pub const KEYWORDS: LazyCell<HashMap<&str, TokenType>> = LazyCell::new(|| {
     let mut m = HashMap::new();
-    m.insert("markup", Markup);
+    m.insert("structure", Structure);
     m.insert("styles", Styles);
     m.insert("group", Group);
     m.insert("px", Px);
@@ -46,7 +46,7 @@ pub enum TokenType {
     Str,
     Number,
     Minus,
-    Markup,
+    Structure,
     Styles,
     Group,
     Eof,