From fda193b8ff84ff39b2d68e420ebf59eb3c7422ea Mon Sep 17 00:00:00 2001 From: Klesti Selimaj Date: Fri, 26 Jun 2026 00:37:41 +0200 Subject: [PATCH] Mist fmt --- crates/codegen/src/fmt/expr.rs | 175 ++++++++++++ crates/codegen/src/fmt/mod.rs | 405 ++++++++++++++++++++++++++++ crates/codegen/src/fmt/statement.rs | 156 +++++++++++ crates/codegen/src/fmt/top_level.rs | 316 ++++++++++++++++++++++ 4 files changed, 1052 insertions(+) create mode 100644 crates/codegen/src/fmt/expr.rs create mode 100644 crates/codegen/src/fmt/mod.rs create mode 100644 crates/codegen/src/fmt/statement.rs create mode 100644 crates/codegen/src/fmt/top_level.rs diff --git a/crates/codegen/src/fmt/expr.rs b/crates/codegen/src/fmt/expr.rs new file mode 100644 index 0000000..7e3ece0 --- /dev/null +++ b/crates/codegen/src/fmt/expr.rs @@ -0,0 +1,175 @@ +use mist_parser::ast::*; + +use crate::fmt::{Context, GenMist, GetMist, MistCodegen}; + +impl GenMist for Expression { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + let ensure_semicolon = if ctx.expr_ensure_semicolon { + ctx.expr_ensure_semicolon = false; + true + } else { + false + }; + + match self { + Expression::Path(path) => cg.add(&path.get_mist()), + Expression::Literal(literal) => literal.gen_mist(ctx, cg), + Expression::Statement(stmt) => stmt.gen_mist(ctx, cg), + Expression::Array(values) => { + cg.add("["); + for (i, val) in values.iter().enumerate() { + if i > 0 { + cg.add(", "); + } + val.gen_mist(ctx, cg); + } + cg.add("]"); + } + Expression::ArrayRepeat(value, repeat) => { + cg.add("["); + value.gen_mist(ctx, cg); + cg.add("; "); + repeat.gen_mist(ctx, cg); + cg.add("]"); + } + Expression::Fix { + initial, + prefixes, + postfixes, + } => { + for prefix in prefixes { + prefix.gen_mist(ctx, cg); + } + initial.gen_mist(ctx, cg); + for postfix in postfixes { + postfix.gen_mist(ctx, cg); + } + } + Expression::Binary { lhs, op, rhs } => { + lhs.gen_mist(ctx, cg); + cg.add(" "); + cg.add(op); + cg.add(" "); + rhs.gen_mist(ctx, cg); + } + Expression::Closure { + return_type, + params, + body, + } => { + cg.add("("); + for (i, arg) in params.iter().enumerate() { + if i > 0 { + cg.add(", "); + } + arg.gen_mist(ctx, cg); + } + cg.add(") => "); + + if let Some(ty) = return_type { + cg.add(&ty.get_mist()); + cg.add(" "); + cg.ensure_brackets_expr(ctx, body); + } else { + body.gen_mist(ctx, cg); + } + } + } + + if ensure_semicolon { + ctx.expr_ensure_semicolon = true; + if !self.is_block() { + cg.add(";"); + } + } + } +} + +impl GenMist for Prefix { + fn gen_mist(&self, _ctx: &mut Context, cg: &mut MistCodegen) { + match self { + Self::Deref => cg.add("*"), + Self::Ref => cg.add("&"), + Self::RefMut => cg.add("&mut "), + Self::Not => cg.add("!"), + Self::Neg => cg.add("-"), + } + } +} + +impl GenMist for Postfix { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + match self { + Postfix::TupleFieldAccess(field, generics) => { + cg.add(&format!( + ".{}{}", + field, + generics + .iter() + .map(|v| format!("::{}", v.get_mist())) + .collect::() + )); + } + Postfix::FieldAccess(field, generics) => { + cg.add(&format!( + ".{}{}", + field.get_mist(), + generics + .iter() + .map(|v| format!("::{}", v.get_mist())) + .collect::() + )); + } + Postfix::Call(args) => { + cg.add("("); + for (i, arg) in args.iter().enumerate() { + if i > 0 { + cg.add(", "); + } + arg.gen_mist(ctx, cg); + } + cg.add(")"); + } + Postfix::MacroCall { inner, delimiter } => { + let (open, close) = match delimiter { + MacroDelimiter::Paren => ("!(", ")"), + MacroDelimiter::Bracket => ("![", "]"), + MacroDelimiter::Brace => ("!{", "}"), + }; + cg.add(open); + cg.add(inner); + cg.add(close); + } + Postfix::StructCall(fields) => { + cg.add("{"); + for (name, expr) in fields { + cg.add(&name.get_mist()); + if let Some(expr) = expr { + cg.add(": "); + expr.gen_mist(ctx, cg); + } + cg.add(", "); + } + cg.add("}"); + } + Postfix::Index(idx) => { + cg.add("["); + idx.gen_mist(ctx, cg); + cg.add("]"); + } + Postfix::As(ty) => { + cg.add(" as "); + cg.add(&ty.get_mist()); + } + Postfix::Try => cg.add("?"), + Postfix::Assign(cmp, expr) => { + cg.add(" "); + cg.add(cmp); + cg.add(" "); + expr.gen_mist(ctx, cg); + } + Postfix::Increment => cg.add(" += 1"), + Postfix::Decrement => cg.add(" -= 1"), + } + } +} diff --git a/crates/codegen/src/fmt/mod.rs b/crates/codegen/src/fmt/mod.rs new file mode 100644 index 0000000..ee01eae --- /dev/null +++ b/crates/codegen/src/fmt/mod.rs @@ -0,0 +1,405 @@ +pub mod expr; +pub mod statement; +pub mod top_level; + +use mist_parser::ast::*; + +pub struct Context { + pub expr_ensure_semicolon: bool, +} + +pub struct MistCodegen { + indent_amount: u8, + output: String, + indent: usize, +} + +impl MistCodegen { + pub fn new() -> Self { + Self { + output: String::new(), + indent: 0, + indent_amount: 4, + } + } + + fn indent_str(&self) -> String { + " ".repeat(self.indent_amount as usize).repeat(self.indent) + } + + pub fn add(&mut self, s: &str) { + self.output.push_str(s); + } + + pub fn addln(&mut self, s: &str) { + self.add(s); + self.add("\n"); + } + + pub fn add_indented(&mut self, s: &str) { + let line = format!("{}{}", self.indent_str(), s); + self.add(&line); + } + + pub fn add_indentedln(&mut self, s: &str) { + let line = format!("{}{}\n", self.indent_str(), s); + self.add(&line); + } + + pub fn into_output(self) -> String { + self.output + } + + pub fn generate(&mut self, toplevels: Vec) -> String { + let mut ctx = Context { + expr_ensure_semicolon: true, + }; + + for (i, tl) in toplevels.iter().enumerate() { + if i > 0 { + self.add("\n"); + } + tl.gen_mist(&mut ctx, self); + } + + self.output.clone() + } + + pub fn ensure_brackets(&mut self, ctx: &mut Context, stmt: &Box) { + match &**stmt { + Statement::Block(_) => stmt.gen_mist(ctx, self), + _ => { + self.add("{"); + self.indent += 1; + stmt.gen_mist(ctx, self); + self.indent -= 1; + self.add_indented("}"); + } + } + } + + pub fn ensure_brackets_expr(&mut self, ctx: &mut Context, expr: &Expression) { + match expr { + Expression::Statement(stmt) => self.ensure_brackets(ctx, stmt), + _ => { + self.add("{"); + self.indent += 1; + expr.gen_mist(ctx, self); + self.indent -= 1; + self.add_indented("}"); + } + } + } +} + +pub trait GenMist { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen); +} + +pub trait GetMist { + fn get_mist(&self) -> String; +} + +impl GetMist for Path { + fn get_mist(&self) -> String { + self.0 + .iter() + .map(Identifier::get_mist) + .collect::>() + .join("::") + } +} + +impl GetMist for Identifier { + fn get_mist(&self) -> String { + self.0.clone() + } +} + +impl GetMist for Visibility { + fn get_mist(&self) -> String { + match self { + Visibility::Public => "pub ".to_string(), + Visibility::PublicTarget(path) => format!("pub({}) ", path.get_mist()), + Visibility::Private => "".to_string(), + } + } +} + +impl GetMist for TypeExpr { + fn get_mist(&self) -> String { + match self { + Self::Path(path, generics) => { + if let Some(generics) = generics { + format!("{}{}", path.get_mist(), generics.get_mist()) + } else { + path.get_mist() + } + } + Self::Lifetime(name) => format!("'{}", name.get_mist()), + Self::Tuple(types) => format!( + "({})", + types + .iter() + .map(|t| t.get_mist()) + .collect::>() + .join(", ") + ), + Self::StaticFn(types, return_type) => { + if let Some(return_type) = return_type { + format!( + "fn({}) -> {}", + types + .iter() + .map(|t| t.get_mist()) + .collect::>() + .join(", "), + return_type.get_mist() + ) + } else { + format!( + "fn({})", + types + .iter() + .map(|t| t.get_mist()) + .collect::>() + .join(", "), + ) + } + } + Self::UnsafePtr { mutable, ty } => { + let mutable = if *mutable { "mut " } else { "const " }; + format!("*{mutable}{}", ty.get_mist()) + } + Self::Ref { + lifetime, + mutable, + ty, + } => { + let base = ty.get_mist(); + if let Some(lifetime) = lifetime { + match lifetime { + Lifetime::Lifetime(v) => { + format!( + "{} &'{} {}", + base, + v.get_mist(), + if *mutable { "mut" } else { "" } + ) + } + Lifetime::Unsafe => { + format!("{} *{}", base, if *mutable { "mut" } else { "const" }) + } + } + } else if *mutable { + format!("{} &mut", base) + } else { + format!("{}&", base) + } + } + Self::Dyn(ty) => { + format!("dyn {}", ty.get_mist()) + } + } + } +} + +impl GetMist for ExprPath { + fn get_mist(&self) -> String { + self.0 + .iter() + .map(ExprPathSegment::get_mist) + .collect::>() + .join("::") + } +} + +impl GetMist for ExprPathSegment { + fn get_mist(&self) -> String { + format!( + "{}{}", + self.ident.get_mist(), + self.generics + .as_ref() + .map(|v| format!("::{}", v.get_mist())) + .unwrap_or_default() + ) + } +} + +impl GetMist for Generics { + fn get_mist(&self) -> String { + if self.0.is_empty() { + String::new() + } else { + format!( + "<{}>", + self.0 + .iter() + .map(Generic::get_mist) + .collect::>() + .join(", ") + ) + } + } +} + +impl GetMist for Generic { + fn get_mist(&self) -> String { + match self { + Self::Lifetime(name) => format!("'{}", name.get_mist()), + Self::Type(ty) => ty.get_mist(), + } + } +} + +impl GetMist for GenericsDecl { + fn get_mist(&self) -> String { + if self.0.is_empty() { + String::new() + } else { + format!( + "<{}>", + self.0 + .iter() + .map(|v| v.get_mist()) + .collect::>() + .join(", ") + ) + } + } +} + +impl GetMist for GenericDecl { + fn get_mist(&self) -> String { + match self { + GenericDecl::Lifetime(name) => format!("'{}", name.get_mist()), + GenericDecl::Type(name, requirements) => { + name.get_mist() + + &(if !requirements.is_empty() { + format!( + ": {}", + requirements + .iter() + .map(TypeExpr::get_mist) + .collect::>() + .join(" + ") + ) + } else { + String::new() + }) + } + } + } +} + +impl GenMist for T { + fn gen_mist(&self, _: &mut Context, cg: &mut MistCodegen) { + cg.add(&self.get_mist()); + } +} + +impl GenMist for Spanned { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + self.item.gen_mist(ctx, cg); + } +} + +impl GenMist for Attribute { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + match self { + Self::Path(path) => cg.add(&path.get_mist()), + Self::NameValue { path, value } => { + cg.add(&format!("{} = ", path.get_mist())); + value.gen_mist(ctx, cg); + } + Self::List { path, items } => { + cg.add(&path.get_mist()); + cg.add("("); + for (i, item) in items.iter().enumerate() { + if i > 0 { + cg.add(", "); + } + item.gen_mist(ctx, cg); + } + cg.add(")"); + } + } + } +} + +impl GenMist for Pattern { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + match self { + Self::Etc => cg.add(".."), + Self::Literal(lit) => lit.gen_mist(ctx, cg), + Self::Path(mutable, path) => { + if *mutable { + cg.add("mut "); + } + cg.add(&path.get_mist()) + } + Self::Struct(path, inner) => { + cg.add(&path.get_mist()); + cg.add(" {"); + for (idx, i) in inner.iter().enumerate() { + if idx > 0 { + cg.add(", "); + } + if let Some((name, pat)) = i { + cg.add(&name.get_mist()); + if let Some(pat) = pat { + cg.add(": "); + pat.gen_mist(ctx, cg); + } + } else { + cg.add(".."); + } + } + cg.add("}"); + } + Self::NamedTuple(path, inner) => { + cg.add(&path.get_mist()); + cg.add("("); + for (i, pat) in inner.iter().enumerate() { + if i > 0 { + cg.add(", "); + } + pat.gen_mist(ctx, cg); + } + cg.add(")"); + } + Self::Tuple(inner) => { + cg.add("("); + for (i, pat) in inner.iter().enumerate() { + if i > 0 { + cg.add(", "); + } + pat.gen_mist(ctx, cg); + } + cg.add(")"); + } + } + } +} + +impl GenMist for Literal { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + match self { + Self::Int(n) => cg.add(&n.to_string()), + Self::Float(n) => cg.add(&format!("{n:?}")), + Self::Bool(b) => cg.add(&b.to_string()), + Self::String(s) => cg.add(&format!("\"{s}\"")), + Self::Tuple(values) => { + cg.add("("); + for (i, val) in values.iter().enumerate() { + if i > 0 { + cg.add(", "); + } + val.gen_mist(ctx, cg); + } + cg.add(")"); + } + } + } +} diff --git a/crates/codegen/src/fmt/statement.rs b/crates/codegen/src/fmt/statement.rs new file mode 100644 index 0000000..15d1147 --- /dev/null +++ b/crates/codegen/src/fmt/statement.rs @@ -0,0 +1,156 @@ +use mist_parser::ast::*; + +use crate::fmt::{Context, GenMist, GetMist, MistCodegen}; + +impl GenMist for Block { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + cg.addln("{"); + cg.indent += 1; + + for stmt in &self.statements { + ctx.expr_ensure_semicolon = true; + cg.add_indented(""); + stmt.gen_mist(ctx, cg); + cg.addln(""); + } + + if let Some(soft_return) = &self.soft_return { + ctx.expr_ensure_semicolon = false; + cg.add_indented(""); + soft_return.gen_mist(ctx, cg); + cg.addln(""); + } + + cg.indent -= 1; + cg.add_indented("}"); + } +} + +impl GenMist for Statement { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + match self { + Statement::UnsafeBlock(block) => { + cg.add("unsafe "); + block.gen_mist(ctx, cg); + } + Statement::Block(block) => block.gen_mist(ctx, cg), + Statement::VarDecl(VarDeclStmt { decl, init }) => { + if decl.type_.is_some() { + cg.add(&decl.type_.as_ref().unwrap().get_mist()); + cg.add(" "); + decl.name.gen_mist(ctx, cg); + } else { + cg.add("let "); + decl.name.gen_mist(ctx, cg); + } + if let Some(init) = init { + cg.add(" = "); + init.gen_mist(ctx, cg); + } + } + Statement::Match(expr, match_items) => { + cg.add("match "); + expr.gen_mist(ctx, cg); + cg.add(" {"); + if !match_items.is_empty() { + cg.addln(""); + cg.indent += 1; + for match_item in match_items { + let MatchItem(pat, body) = &match_item.item; + cg.add_indented(""); + for (i, p) in pat.iter().enumerate() { + if i > 0 { + cg.add(" | "); + } + p.gen_mist(ctx, cg); + } + cg.add(" => "); + if body.is_block() { + body.gen_mist(ctx, cg); + cg.addln(""); + } else { + body.gen_mist(ctx, cg); + cg.addln(","); + } + } + cg.indent -= 1; + cg.add_indented("}"); + } else { + cg.add("}"); + } + } + Statement::If { + initial, + else_if, + else_branch, + } => { + cg.add("if "); + ctx.expr_ensure_semicolon = false; + initial.condition.gen_mist(ctx, cg); + cg.add(" "); + initial.body.gen_mist(ctx, cg); + + for else_if_branch in else_if { + cg.add(" else if "); + ctx.expr_ensure_semicolon = false; + else_if_branch.condition.gen_mist(ctx, cg); + cg.add(" "); + else_if_branch.body.gen_mist(ctx, cg); + } + + if let Some(else_br) = else_branch { + cg.add(" else "); + else_br.gen_mist(ctx, cg); + } + } + Statement::While(StatementBranch { condition, body }) => { + cg.add("while "); + condition.gen_mist(ctx, cg); + cg.add(" "); + body.gen_mist(ctx, cg); + } + Statement::Loop(body) => { + cg.add("loop "); + body.gen_mist(ctx, cg); + } + Statement::CStyleFor { + init, + condition, + update, + body, + } => { + cg.add("for ("); + ctx.expr_ensure_semicolon = true; + init.gen_mist(ctx, cg); + cg.add(" "); + ctx.expr_ensure_semicolon = false; + condition.gen_mist(ctx, cg); + cg.add(" "); + update.gen_mist(ctx, cg); + cg.add(") "); + body.gen_mist(ctx, cg); + } + Statement::For { + pattern, + iterator, + body, + } => { + cg.add("for "); + pattern.gen_mist(ctx, cg); + cg.add(" in "); + iterator.gen_mist(ctx, cg); + cg.add(" "); + body.gen_mist(ctx, cg); + } + Statement::Return(expr) => { + cg.add("return"); + if let Some(expr) = expr { + cg.add(" "); + expr.gen_mist(ctx, cg); + } + } + Statement::Break => cg.add("break"), + Statement::Continue => cg.add("continue"), + } + } +} diff --git a/crates/codegen/src/fmt/top_level.rs b/crates/codegen/src/fmt/top_level.rs new file mode 100644 index 0000000..0eb242a --- /dev/null +++ b/crates/codegen/src/fmt/top_level.rs @@ -0,0 +1,316 @@ +use mist_parser::ast::*; + +use crate::fmt::{Context, GenMist, GetMist, MistCodegen}; + +impl GenMist for ImplDecl { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + cg.add_indented("impl"); + let generics = self.generics.get_mist(); + if !generics.is_empty() { + cg.add(&generics); + cg.add(" "); + } + cg.add(&self.target.get_mist()); + if let Some(trait_) = &self.trait_ { + cg.add(" for "); + cg.add(&trait_.get_mist()); + } + cg.addln(" {"); + cg.indent += 1; + + for method in &self.methods { + method.gen_mist(ctx, cg); + } + + cg.indent -= 1; + cg.add_indentedln("}"); + } +} + +impl GenMist for FunctionDecl { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + cg.add_indented(&self.visibility.get_mist()); + + if self.return_type.is_none() { + cg.add("void "); + } else { + cg.add(&self.return_type.as_ref().unwrap().get_mist()); + cg.add(" "); + } + + cg.add(&self.name.get_mist()); + cg.add(&self.generics.get_mist()); + cg.add("("); + + if let Some((is_ref, lifetime, is_mut)) = &self.self_param { + if *is_ref { + cg.add("&"); + } + if let Some(lifetime) = lifetime { + cg.add(&format!("'{} ", lifetime.0)); + } + if *is_mut { + cg.add("mut "); + } + cg.add("self"); + if !self.params.0.is_empty() { + cg.add(", "); + } + } + + for (i, param) in self.params.0.iter().enumerate() { + if i > 0 { + cg.add(", "); + } + param.gen_mist(ctx, cg); + } + + cg.add(")"); + + if let Some(override_spec) = &self.is_override { + cg.add(" override"); + if let Some(path) = &override_spec.0 { + cg.add("("); + cg.add(&path.get_mist()); + cg.add(")"); + } + } + + if let Some(body) = &self.body { + cg.add(" "); + body.gen_mist(ctx, cg); + } else { + cg.addln(";"); + } + } +} + +impl GenMist for ParamList { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + for (i, param) in self.0.iter().enumerate() { + if i > 0 { + cg.add(", "); + } + param.gen_mist(ctx, cg); + } + } +} + +impl GenMist for VarDecl { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + if let Some(type_) = &self.type_ { + cg.add(&type_.get_mist()); + cg.add(" "); + } + self.name.gen_mist(ctx, cg); + } +} + +impl GetMist for FieldDecl { + fn get_mist(&self) -> String { + format!( + "{}{} {}", + self.visibility.get_mist(), + self.type_.get_mist(), + self.name.get_mist(), + ) + } +} + +impl GetMist for EnumItem { + fn get_mist(&self) -> String { + match self { + Self::Named(id) => id.get_mist(), + Self::Struct(id, s) => format!( + "{} {{{}}}", + id.get_mist(), + s.iter() + .map(|field| format!("{}: {}", field.name.get_mist(), field.type_.get_mist())) + .collect::>() + .join(", ") + ), + Self::Tuple(id, t) => format!( + "{}({})", + id.get_mist(), + t.iter() + .map(TypeExpr::get_mist) + .collect::>() + .join(", ") + ), + } + } +} + +impl GenMist for TopLevel { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + if let TopLevelKind::ModAttribute = self.0.item { + for attr in &self.1 { + cg.add("#!["); + attr.gen_mist(ctx, cg); + cg.addln("]"); + } + } else { + for attr in &self.1 { + cg.add("#["); + attr.gen_mist(ctx, cg); + cg.addln("]"); + } + } + + self.0.gen_mist(ctx, cg); + } +} + +impl GenMist for TopLevelKind { + fn gen_mist(&self, ctx: &mut Context, cg: &mut MistCodegen) { + match self { + Self::ModAttribute => {} + Self::Import(vis, path) => { + cg.addln(&format!("{}use {};", vis.get_mist(), path.get_mist())) + } + Self::DeclareModule(vis, name) => { + cg.addln(&format!("{}module {};", vis.get_mist(), name.get_mist())) + } + Self::FunctionDecl(decl) => decl.gen_mist(ctx, cg), + Self::ImplDecl(impl_) => impl_.gen_mist(ctx, cg), + Self::StructDecl { + visibility, + name, + generics, + fields, + } => { + cg.add(&format!( + "{}struct {}{} {{", + visibility.get_mist(), + name.get_mist(), + generics.get_mist() + )); + if !fields.is_empty() { + cg.addln(""); + cg.indent += 1; + for field in fields { + cg.add_indentedln(&format!("{},", field.item.get_mist())); + } + cg.indent -= 1; + cg.add_indented("}"); + } else { + cg.add("}"); + } + cg.addln(""); + } + Self::EnumDecl { + visibility, + name, + generics, + fields, + } => { + cg.add(&format!( + "{}enum {}{} {{", + visibility.get_mist(), + name.get_mist(), + generics.get_mist() + )); + if !fields.is_empty() { + cg.addln(""); + cg.indent += 1; + for field in fields { + cg.add_indentedln(&format!("{},", field.item.get_mist())); + } + cg.indent -= 1; + cg.add_indented("}"); + } else { + cg.add("}"); + } + cg.addln(""); + } + Self::TraitDecl { + visibility, + name, + generics, + requirements, + items, + } => { + cg.add(&format!( + "{}trait {}{}", + visibility.get_mist(), + name.get_mist(), + generics.get_mist() + )); + if !requirements.is_empty() { + cg.add(": "); + cg.add( + &requirements + .iter() + .map(TypeExpr::get_mist) + .collect::>() + .join(" + "), + ); + } + cg.addln(" {"); + cg.indent += 1; + for item in items { + item.gen_mist(ctx, cg); + } + cg.indent -= 1; + cg.add_indentedln("}"); + } + Self::ClassDecl { + visibility, + name, + generics, + inherits, + fields, + constructor, + items, + } => { + cg.add(&format!( + "{}class {}{}", + visibility.get_mist(), + name.get_mist(), + generics.get_mist() + )); + if let Some(inherits) = inherits { + cg.add(" : "); + cg.add(&inherits.get_mist()); + } + cg.addln(" {"); + cg.indent += 1; + + for field in fields { + cg.add_indented(&field.item.decl.get_mist()); + if let Some(init) = &field.item.init { + cg.add(" = "); + init.gen_mist(ctx, cg); + } + cg.addln(";"); + } + + if let Some(constructor) = constructor { + cg.add_indented(&constructor.item.visibility.get_mist()); + cg.add("constructor"); + cg.add(&constructor.item.generics.get_mist()); + cg.add("("); + for (i, param) in constructor.item.params.0.iter().enumerate() { + if i > 0 { + cg.add(", "); + } + param.gen_mist(ctx, cg); + } + cg.add(") "); + constructor.item.body.gen_mist(ctx, cg); + cg.addln(""); + } + + for item in items { + match item { + ClassItem::Method(method) => method.gen_mist(ctx, cg), + ClassItem::ImplDecl(impl_) => impl_.gen_mist(ctx, cg), + } + } + + cg.indent -= 1; + cg.add_indentedln("}"); + } + } + } +}