deimos-lang/src/ast/pretty_print.rs

use crate::ast::*;
use crate::util::indent_writer::IndentWriter;
use std::fmt::Debug;

pub trait PrettyPrint {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()>;
}

impl PrettyPrint for Operator {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use Operator::*;
        match self {
            Binary(o) => o.pretty_print(writer),
            PrefixUnary(o) => o.pretty_print(writer),
            SuffixUnary(o) => o.pretty_print(writer),
        }
    }
}

impl PrettyPrint for BinaryOperator {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use BinaryOperator::*;
        match self {
            Or => writer.write("||"),
            And => writer.write("&&"),
            EqualTo => writer.write("=="),
            NotEqualTo => writer.write("!="),
            Greater => writer.write(">"),
            Less => writer.write("<"),
            GreaterEqual => writer.write(">="),
            LessEqual => writer.write("<="),
            Add => writer.write("+"),
            Subtract => writer.write("-"),
            Multiply => writer.write("*"),
            Divide => writer.write("/"),
            Modulo => writer.write("%"),
            LeftShift => writer.write("<<"),
            RightShift => writer.write(">>"),
        }
    }
}

impl PrettyPrint for PrefixUnaryOperator {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use PrefixUnaryOperator::*;
        match self {
            Spread => writer.write("..."),
            BorrowMut => writer.write("&mut"),
            Borrow => writer.write("&"),
            Mut => writer.write("mut"),
            Not => writer.write("!"),
            Negative => writer.write("-"),
        }
    }
}

impl PrettyPrint for SuffixUnaryOperator {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use SuffixUnaryOperator::*;
        match self {
            PlusPlus => writer.write("++"),
            MinusMinus => writer.write("--"),
        }
    }
}

impl PrettyPrint for Identifier {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!("Identifier({})", self.name))
    }
}

impl PrettyPrint for FullyQualifiedName {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("FullyQualifiedName")?;
        writer.increase_indent();
        for identifier in &self.identifiers {
            identifier.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for TypeUse {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use TypeUse::*;
        match self {
            Void => {
                writer.writeln_indented("TypeUse(Void)")?;
            }
            InterfaceOrClass(t) => {
                writer.increase_indent();
                t.pretty_print(writer)?;
                writer.decrease_indent();
            }
            Tuple(t) => {
                writer.increase_indent();
                t.pretty_print(writer)?;
                writer.decrease_indent();
            }
            Function(t) => {
                writer.increase_indent();
                t.pretty_print(writer)?;
                writer.decrease_indent();
            }
        }
        Ok(())
    }
}

impl PrettyPrint for InterfaceOrClassTypeUse {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!(
            "InterfaceOrClassTypeUse(borrow_count = {}, is_mutable = {})",
            self.borrow_count, self.is_mutable
        ))?;
        writer.increase_indent();
        self.fqn.pretty_print(writer)?;
        self.generics.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for TupleTypeUse {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!(
            "TupleTypeUse(borrow_count = {}, is_mutable = {})",
            self.borrow_count, self.is_mutable
        ))?;
        writer.increase_indent();
        self.arguments.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for FunctionTypeUse {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!(
            "FunctionTypeUse(borrow_count = {})",
            self.borrow_count
        ))?;
        writer.increase_indent();
        if let Some(function_type_modifier) = &self.function_modifier {
            function_type_modifier.pretty_print(writer)?;
        }
        self.generics.pretty_print(writer)?;
        self.parameters.pretty_print(writer)?;
        self.return_type.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for GenericArguments {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("GenericArguments")?;
        writer.increase_indent();
        for type_use in &self.0 {
            type_use.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for GenericParameters {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("GenericParameters")?;
        writer.increase_indent();
        for identifier in &self.0 {
            identifier.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for TupleArguments {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("TupleArguments")?;
        writer.increase_indent();
        for type_use in &self.0 {
            type_use.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for ImplementsList {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("ImplementsList")?;
        writer.increase_indent();
        for type_use in &self.0 {
            type_use.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for FunctionTypeModifier {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use FunctionTypeModifier::*;
        writer.writeln_indented(&format!(
            "FunctionTypeModifier({})",
            match self {
                Cons => "cons",
                MutRef => "mut ref",
                Mut => "mut",
                Ref => "ref",
            }
        ))
    }
}

impl PrettyPrint for Parameters {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("Parameters")?;
        writer.increase_indent();
        for parameter in &self.0 {
            parameter.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for Parameter {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("Parameter")?;
        writer.increase_indent();
        self.identifier.pretty_print(writer)?;
        self.type_use.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for ReturnType {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("ReturnType")?;
        writer.increase_indent();
        self.declared_type.pretty_print(writer)?;
        self.references.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for References {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("References")?;
        writer.increase_indent();
        for identifier in &self.0 {
            identifier.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for CompilationUnit {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("CompilationUnit")?;
        writer.increase_indent();
        if let Some(namespace) = &self.namespace {
            writer.writeln_indented("Namespace")?;
            writer.increase_indent();
            namespace.pretty_print(writer)?;
            writer.decrease_indent();
        }
        for declaration in &self.declarations {
            declaration.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for ModuleLevelDeclaration {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use ModuleLevelDeclaration::*;
        match self {
            Module(module) => module.pretty_print(writer),
            Interface(interface) => interface.pretty_print(writer),
            Class(class) => class.pretty_print(writer),
            Function(function) => function.pretty_print(writer),
            PlatformFunction(platform_function) => platform_function.pretty_print(writer),
        }
    }
}

impl PrettyPrint for InterfaceLevelDeclaration {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use InterfaceLevelDeclaration::*;
        match self {
            Module(module) => module.pretty_print(writer),
            Interface(interface) => interface.pretty_print(writer),
            Class(class) => class.pretty_print(writer),
            Function(function) => function.pretty_print(writer),
            OperatorFunction(operator_function) => operator_function.pretty_print(writer),
        }
    }
}

impl PrettyPrint for ClassLevelDeclaration {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use ClassLevelDeclaration::*;
        match self {
            Module(module) => module.pretty_print(writer),
            Interface(interface) => interface.pretty_print(writer),
            Class(class) => class.pretty_print(writer),
            Function(function) => function.pretty_print(writer),
            OperatorFunction(operator_function) => operator_function.pretty_print(writer),
            PlatformFunction(platform_function) => platform_function.pretty_print(writer),
            Property(property) => property.pretty_print(writer),
            Field(field) => field.pretty_print(writer),
        }
    }
}

impl PrettyPrint for ModuleDeclaration {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!(
            "ModuleDeclaration(is_public = {})",
            self.is_public
        ))?;
        writer.increase_indent();
        self.identifier.pretty_print(writer)?;
        for declaration in &self.declarations {
            declaration.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for InterfaceDeclaration {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!(
            "InterfaceDeclaration(is_public = {})",
            self.is_public
        ))?;
        writer.increase_indent();
        self.identifier.pretty_print(writer)?;
        self.generics.pretty_print(writer)?;
        self.implements.pretty_print(writer)?;
        for declaration in &self.declarations {
            declaration.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for ClassDeclaration {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!("ClassDeclaration(is_public = {})", self.is_public))?;
        writer.increase_indent();
        self.identifier.pretty_print(writer)?;
        self.generics.pretty_print(writer)?;
        if let Some(class_constructor) = &self.class_constructor {
            class_constructor.pretty_print(writer)?;
        }
        self.implements.pretty_print(writer)?;
        for declaration in &self.declarations {
            declaration.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for FunctionDefinition {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!(
            "FunctionDefinition(is_public = {})",
            self.is_public
        ))?;
        writer.increase_indent();
        if let Some(modifier) = &self.modifier {
            modifier.pretty_print(writer)?;
        }
        self.generics.pretty_print(writer)?;
        self.identifier.pretty_print(writer)?;
        self.parameters.pretty_print(writer)?;
        self.return_type.pretty_print(writer)?;
        self.body.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for OperatorFunctionDefinition {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!(
            "OperatorFunctionDefinition(is_public = {})",
            self.is_public
        ))?;
        writer.increase_indent();
        if let Some(modifier) = &self.modifier {
            modifier.pretty_print(writer)?;
        }
        self.generics.pretty_print(writer)?;
        self.operator.pretty_print(writer)?;
        self.parameters.pretty_print(writer)?;
        self.return_type.pretty_print(writer)?;
        self.body.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for PlatformFunctionDeclaration {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!(
            "PlatformFunctionDeclaration(is_public = {})",
            self.is_public
        ))?;
        writer.increase_indent();
        if let Some(modifier) = &self.modifier {
            modifier.pretty_print(writer)?;
        }
        self.generics.pretty_print(writer)?;
        self.identifier.pretty_print(writer)?;
        self.parameters.pretty_print(writer)?;
        self.return_type.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for InterfaceFunctionDeclaration {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("InterfaceFunctionDeclaration")?;
        writer.increase_indent();
        if let Some(modifier) = &self.modifier {
            modifier.pretty_print(writer)?;
        }
        self.generics.pretty_print(writer)?;
        self.identifier.pretty_print(writer)?;
        self.parameters.pretty_print(writer)?;
        self.return_type.pretty_print(writer)?;
        if let Some(body) = &self.body {
            body.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for InterfaceOperatorFunctionDeclaration {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("InterfaceOperatorFunctionDeclaration")?;
        writer.increase_indent();
        if let Some(modifier) = &self.modifier {
            modifier.pretty_print(writer)?;
        }
        self.generics.pretty_print(writer)?;
        self.operator.pretty_print(writer)?;
        self.parameters.pretty_print(writer)?;
        self.return_type.pretty_print(writer)?;
        if let Some(body) = &self.body {
            body.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for FunctionModifier {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use FunctionModifier::*;
        writer.writeln_indented(&format!(
            "FunctionModifier({})",
            match self {
                Static => "static",
                Cons => "cons",
                Mut => "mut",
                Ref => "ref",
                MutRef => "mut ref",
            }
        ))
    }
}

impl PrettyPrint for FunctionBody {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use FunctionBody::*;
        match self {
            Equals(expression) => {
                writer.writeln_indented("EqualsFunctionBody")?;
                writer.increase_indent();
                expression.pretty_print(writer)?;
                writer.decrease_indent();
            }
            Block(block_statement) => {
                writer.writeln_indented("BlockFunctionBody")?;
                writer.increase_indent();
                block_statement.pretty_print(writer)?;
                writer.decrease_indent();
            }
            Alias(identifier) => {
                writer.writeln_indented("AliasFunctionBody")?;
                writer.increase_indent();
                identifier.pretty_print(writer)?;
                writer.decrease_indent();
            }
        }
        Ok(())
    }
}

impl PrettyPrint for ClassConstructor {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("ClassConstructor")?;
        writer.increase_indent();
        for constructor_parameter in &self.0 {
            constructor_parameter.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for ClassConstructorParameter {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use ClassConstructorParameter::*;
        match self {
            Property(property) => {
                writer.writeln_indented("PropertyConstructorParameter")?;
                writer.increase_indent();
                property.pretty_print(writer)?;
                writer.decrease_indent();
            }
            Field(field) => {
                writer.writeln_indented("FieldConstructorParameter")?;
                writer.increase_indent();
                field.pretty_print(writer)?;
                writer.decrease_indent();
            }
        }
        Ok(())
    }
}

impl PrettyPrint for PropertyDeclaration {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!(
            "PropertyDeclaration(is_mutable = {})",
            self.is_mutable
        ))?;
        writer.increase_indent();
        self.identifier.pretty_print(writer)?;
        self.declared_type.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for FieldDeclaration {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!(
            "FieldDeclaration(is_mutable = {})",
            self.is_mutable
        ))?;
        writer.increase_indent();
        self.identifier.pretty_print(writer)?;
        self.declared_type.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for BlockStatement {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("BlockStatement")?;
        writer.increase_indent();
        for statement in &self.statements {
            statement.pretty_print(writer)?;
        }
        if let Some(expression) = &self.expression {
            expression.pretty_print(writer)?;
        }
        Ok(())
    }
}

impl PrettyPrint for Statement {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use Statement::*;
        match self {
            BlockStatement(block_statement) => block_statement.pretty_print(writer),
            VariableDeclarationStatement(s) => s.pretty_print(writer),
            AssignStatement(s) => s.pretty_print(writer),
            CallStatement(s) => s.pretty_print(writer),
            ReturnStatement(s) => s.pretty_print(writer),
            IfStatement(s) => s.pretty_print(writer),
            IfElseStatement(s) => s.pretty_print(writer),
            WhileStatement(s) => s.pretty_print(writer),
            ForStatement(s) => s.pretty_print(writer),
        }
    }
}

impl PrettyPrint for VariableDeclarationStatement {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented(&format!(
            "VariableDeclarationStatement(is_mutable = {})",
            self.is_mutable
        ))?;
        writer.increase_indent();
        self.identifier.pretty_print(writer)?;
        if let Some(declared_type) = &self.declared_type {
            declared_type.pretty_print(writer)?;
        }
        if let Some(initializer) = &self.initializer {
            initializer.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for AssignStatement {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("AssignStatement")?;
        writer.increase_indent();
        self.lhs.pretty_print(writer)?;
        self.rhs.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for CallStatement {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("CallStatement")?;
        writer.increase_indent();
        self.0.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for ReturnStatement {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("ReturnStatement")?;
        if let Some(expression) = &self.0 {
            writer.increase_indent();
            expression.pretty_print(writer)?;
            writer.decrease_indent();
        }
        Ok(())
    }
}

impl PrettyPrint for IfStatement {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("IfStatement")?;
        writer.increase_indent();
        self.condition.pretty_print(writer)?;
        self.then_block.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for IfElseStatement {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("IfElseStatement")?;
        writer.increase_indent();
        self.condition.pretty_print(writer)?;
        self.then_block.pretty_print(writer)?;
        for else_if in &self.else_ifs.0 {
            else_if.condition.pretty_print(writer)?;
            else_if.then_block.pretty_print(writer)?;
        }
        self.else_block.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for WhileStatement {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("WhileStatement")?;
        writer.increase_indent();
        self.condition.pretty_print(writer)?;
        self.body.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for ForStatement {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("ForStatement")?;
        writer.increase_indent();
        self.variable.pretty_print(writer)?;
        self.iterator.pretty_print(writer)?;
        self.body.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for Expression {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use Expression::*;
        match self {
            Ternary(e) => e.pretty_print(writer),
            Binary(e) => e.pretty_print(writer),
            UnaryPrefix(e) => e.pretty_print(writer),
            UnarySuffix(e) => e.pretty_print(writer),
            Call(e) => e.pretty_print(writer),
            ObjectAccess(o) => o.pretty_print(writer),
            Literal(literial) => literial.pretty_print(writer),
            FullyQualifiedName(fqn) => fqn.pretty_print(writer),
            Closure(closure) => closure.pretty_print(writer),
        }
    }
}

impl PrettyPrint for TernaryExpression {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("TernaryExpression")?;
        writer.increase_indent();
        self.condition.pretty_print(writer)?;
        self.true_expression.pretty_print(writer)?;
        self.false_expression.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for BinaryExpression {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("BinaryExpression")?;
        writer.increase_indent();
        self.left.pretty_print(writer)?;
        self.operator.pretty_print(writer)?;
        self.right.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for PrefixExpression {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("PrefixExpression")?;
        writer.increase_indent();
        self.operator.pretty_print(writer)?;
        self.expression.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for SuffixExpression {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("SuffixExpression")?;
        writer.increase_indent();
        self.expression.pretty_print(writer)?;
        self.operator.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for CallExpression {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("CallExpression")?;
        writer.increase_indent();
        self.callee.pretty_print(writer)?;
        if let Some(turbo_fish) = &self.turbo_fish {
            turbo_fish.pretty_print(writer)?;
        }
        self.arguments.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for TurboFish {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("TurboFish")?;
        writer.increase_indent();
        self.0.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for CallArguments {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("CallArguments")?;
        writer.increase_indent();
        for call_argument in &self.0 {
            call_argument.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for CallArgument {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("CallArgument")?;
        writer.increase_indent();
        self.0.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for Closure {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        todo!()
    }
}

impl PrettyPrint for ObjectAccess {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("ObjectAccess")?;
        writer.increase_indent();
        self.receiver.pretty_print(writer)?;
        self.navigations.pretty_print(writer)?;
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for ObjectNavigations {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("ObjectNavigations")?;
        writer.increase_indent();
        for object_navigation in &self.0 {
            object_navigation.pretty_print(writer)?;
        }
        writer.decrease_indent();
        Ok(())
    }
}

impl PrettyPrint for ObjectNavigation {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use ObjectNavigation::*;
        match self {
            Index(e) => {
                writer.writeln_indented("Index")?;
                writer.increase_indent();
                e.pretty_print(writer)?;
                writer.decrease_indent();
            }
            Identifier(identifier) => {
                writer.writeln_indented("Property")?;
                writer.increase_indent();
                identifier.pretty_print(writer)?;
                writer.decrease_indent();
            }
        }
        Ok(())
    }
}

impl PrettyPrint for Literal {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        use Literal::*;
        match self {
            Integer(i) => writer.writeln_indented(&format!("Integer({})", i)),
            Long(l) => writer.writeln_indented(&format!("Long({})", l)),
            Double(d) => writer.writeln_indented(&format!("Double({})", d)),
            USize(u) => writer.writeln_indented(&format!("USize({})", u)),
            String(s) => writer.writeln_indented(&format!("String({})", s)),
            DString(d_string) => d_string.pretty_print(writer),
            BacktickString(d_string) => d_string.pretty_print(writer),
            Boolean(b) => writer.writeln_indented(&format!("Boolean({})", b)),
        }
    }
}

impl PrettyPrint for DString {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("DString")?;
        writer.increase_indent();
        for part in &self.0 {
            part.pretty_print(writer)?;
        }
        Ok(())
    }
}

impl PrettyPrint for DStringPart {
    fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
        writer.writeln_indented("DStringPart")?;
        writer.increase_indent();
        match self {
            DStringPart::String(s) => writer.writeln_indented(&format!("String({})", s)),
            DStringPart::Expression(e) => e.pretty_print(writer),
        }
    }
}