feature/add impl (#6)

* format code

* with object gen and args

* add implementation

* add rust generator

* reset generated code

* add basic output

* reset output

* add object

* add format function

* with opts

* fix vec

* add context to unwrap

* fix arguments

* with function body

* first complete generation: Still missing Vec<Obj>

* run full alpine

* add roadmap item

README.md

@@ -20,7 +20,7 @@ Work in progress. This is not ready for usage yet
   - [x] Querier
   - [x] Context
   - [x] Deserializer for nested response (bind)
-- [ ] Add codegen to hook into querier
+- [x] Add codegen to hook into querier
 - [ ] fix build / release cycle
 - [ ] general api stabilisation
 - [ ] document usage

crates/dagger-codegen/src/codegen.rs

@@ -1,155 +0,0 @@
-use std::{
-    io::{BufWriter, Write},
-    sync::Arc,
-};
-
-use dagger_core::introspection::{FullType, IntrospectionResponse, Schema};
-use genco::{fmt, prelude::rust, prelude::*, quote};
-
-use crate::handlers::{
-    enumeration::Enumeration, input::Input, object::Object, scalar::Scalar, DynHandler, Handlers,
-};
-
-#[allow(dead_code)]
-pub struct CodeGeneration {
-    handlers: Handlers,
-}
-
-impl CodeGeneration {
-    pub fn new() -> Self {
-        Self {
-            handlers: vec![
-                Arc::new(Scalar {}),
-                Arc::new(Enumeration {}),
-                Arc::new(Input {}),
-                Arc::new(Object {}),
-            ],
-        }
-    }
-
-    pub fn generate(&self, schema: &IntrospectionResponse) -> eyre::Result<String> {
-        let code = self.generate_from_schema(
-            schema
-                .as_schema()
-                .schema
-                .as_ref()
-                .ok_or(eyre::anyhow!("could not get schema to generate code from"))?,
-        )?;
-        Ok(code)
-    }
-
-    fn generate_from_schema(&self, schema: &Schema) -> eyre::Result<String> {
-        let mut output = rust::Tokens::new();
-        output.push();
-        output.append(quote! {
-            $(format!("// code generated by dagger. DO NOT EDIT."))
-        });
-
-        output.push();
-        output.append(render_base_types());
-        output.push();
-
-        let mut types = get_types(schema)?;
-        //let remaining: Vec<Option<String>> = types.into_iter().map(type_name).collect();
-
-        types.sort_by_key(|a| a.name.as_ref());
-
-        for (handler, types) in self.group_by_handlers(&types) {
-            for t in types {
-                if let Some(_) = self.type_name(&t) {
-                    let rendered = handler.render(&t)?;
-                    output.push();
-                    output.append(rendered);
-                }
-            }
-        }
-
-        let mut buffer = BufWriter::new(Vec::new());
-        let mut w = fmt::IoWriter::new(buffer.by_ref());
-        let fmt = fmt::Config::from_lang::<Rust>().with_indentation(fmt::Indentation::Space(4));
-        let config = rust::Config::default();
-        // Prettier imports and use.
-        //.with_default_import(rust::ImportMode::Qualified);
-
-        output.format_file(&mut w.as_formatter(&fmt), &config)?;
-
-        let out = String::from_utf8(buffer.into_inner()?)?;
-        Ok(out)
-    }
-
-    pub fn group_by_handlers(&self, types: &Vec<&FullType>) -> Vec<(DynHandler, Vec<FullType>)> {
-        let mut group = vec![];
-
-        for handler in self.handlers.iter() {
-            let mut group_types: Vec<FullType> = vec![];
-            for t in types.iter() {
-                if handler.predicate(*t) {
-                    group_types.push(t.clone().clone());
-                }
-            }
-
-            group.push((handler.clone(), group_types))
-        }
-
-        group
-    }
-
-    pub fn type_name(&self, t: &FullType) -> Option<String> {
-        let name = t.name.as_ref();
-        if let Some(name) = name {
-            if name.starts_with("_") {
-                //|| !is_custom_scalar_type(t) {
-                return None;
-            }
-
-            return Some(name.replace("Query", "Client"));
-        }
-
-        None
-    }
-
-    fn group_key(&self, t: &FullType) -> Option<DynHandler> {
-        for handler in self.handlers.iter() {
-            if handler.predicate(&t) {
-                return Some(handler.clone());
-            }
-        }
-
-        None
-    }
-
-    fn sort_key(&self, t: &FullType) -> (isize, String) {
-        for (i, handler) in self.handlers.iter().enumerate() {
-            if handler.predicate(t) {
-                return (i as isize, t.name.as_ref().unwrap().clone());
-            }
-        }
-
-        return (-1, t.name.as_ref().unwrap().clone());
-    }
-}
-
-fn render_base_types() -> rust::Tokens {
-    let i = rust::import("dagger_core", "Int");
-    let b = rust::import("dagger_core", "Boolean");
-
-    quote! {
-        $(register(i))
-        $(register(b))
-    }
-}
-
-fn get_types(schema: &Schema) -> eyre::Result<Vec<&FullType>> {
-    let types = schema
-        .types
-        .as_ref()
-        .ok_or(eyre::anyhow!("types not found on schema"))?;
-
-    let types: Vec<&FullType> = types
-        .iter()
-        .map(|t| t.as_ref().map(|t| &t.full_type))
-        .flatten()
-        .collect();
-
-    Ok(types)
-}

crates/dagger-codegen/src/functions.rs

@@ -0,0 +1,422 @@
+use std::sync::Arc;
+
+use dagger_core::introspection::{FullType, FullTypeFields, InputValue, TypeRef, __TypeKind};
+use eyre::ContextCompat;
+
+use crate::utility::OptionExt;
+
+pub trait FormatTypeFuncs {
+    fn format_kind_list(&self, representation: &str) -> String;
+    fn format_kind_scalar_string(&self, representation: &str) -> String;
+    fn format_kind_scalar_int(&self, representation: &str) -> String;
+    fn format_kind_scalar_float(&self, representation: &str) -> String;
+    fn format_kind_scalar_boolean(&self, representation: &str) -> String;
+    fn format_kind_scalar_default(
+        &self,
+        representation: &str,
+        ref_name: &str,
+        input: bool,
+    ) -> String;
+    fn format_kind_object(&self, representation: &str, ref_name: &str) -> String;
+    fn format_kind_input_object(&self, representation: &str, ref_name: &str) -> String;
+    fn format_kind_enum(&self, representation: &str, ref_name: &str) -> String;
+}
+
+pub type DynFormatTypeFuncs = Arc<dyn FormatTypeFuncs + Send + Sync>;
+
+pub struct CommonFunctions {
+    format_type_funcs: DynFormatTypeFuncs,
+}
+
+impl CommonFunctions {
+    pub fn new(funcs: DynFormatTypeFuncs) -> Self {
+        Self {
+            format_type_funcs: funcs,
+        }
+    }
+
+    pub fn format_input_type(&self, t: &TypeRef) -> String {
+        self.format_type(t, true)
+    }
+
+    pub fn format_output_type(&self, t: &TypeRef) -> String {
+        self.format_type(t, false)
+    }
+
+    fn format_type(&self, t: &TypeRef, input: bool) -> String {
+        let mut representation = String::new();
+        let mut r = Some(t.clone());
+        while r.is_some() {
+            return match r.as_ref() {
+                Some(rf) => match rf.kind.as_ref() {
+                    Some(k) => match k {
+                        __TypeKind::SCALAR => match Scalar::from(rf) {
+                            Scalar::Int => self
+                                .format_type_funcs
+                                .format_kind_scalar_int(&mut representation),
+                            Scalar::Float => self
+                                .format_type_funcs
+                                .format_kind_scalar_float(&mut representation),
+                            Scalar::String => self
+                                .format_type_funcs
+                                .format_kind_scalar_string(&mut representation),
+                            Scalar::Boolean => self
+                                .format_type_funcs
+                                .format_kind_scalar_boolean(&mut representation),
+                            Scalar::Default => self.format_type_funcs.format_kind_scalar_default(
+                                &mut representation,
+                                rf.name.as_ref().unwrap(),
+                                input,
+                            ),
+                        },
+                        __TypeKind::OBJECT => self
+                            .format_type_funcs
+                            .format_kind_object(&mut representation, rf.name.as_ref().unwrap()),
+                        __TypeKind::ENUM => self
+                            .format_type_funcs
+                            .format_kind_enum(&mut representation, rf.name.as_ref().unwrap()),
+                        __TypeKind::INPUT_OBJECT => {
+                            self.format_type_funcs.format_kind_input_object(
+                                &mut representation,
+                                &rf.name.as_ref().unwrap(),
+                            )
+                        }
+                        __TypeKind::LIST => {
+                            let mut inner_type = rf
+                                .of_type
+                                .as_ref()
+                                .map(|t| t.clone())
+                                .map(|t| *t)
+                                .map(|t| self.format_type(&t, input))
+                                .context("could not get inner type of list")
+                                .unwrap();
+
+                            representation =
+                                self.format_type_funcs.format_kind_list(&mut inner_type);
+
+                            return representation;
+                        }
+                        __TypeKind::NON_NULL => {
+                            r = rf.of_type.as_ref().map(|t| t.clone()).map(|t| *t);
+                            continue;
+                        }
+                        __TypeKind::Other(_) => {
+                            r = rf.of_type.as_ref().map(|t| t.clone()).map(|t| *t);
+                            continue;
+                        }
+                        __TypeKind::INTERFACE => break,
+                        __TypeKind::UNION => break,
+                    },
+                    None => break,
+                },
+                None => break,
+            };
+        }
+
+        println!("rep: {}", representation);
+        println!("{:?}", t);
+
+        representation
+    }
+}
+
+pub enum Scalar {
+    Int,
+    Float,
+    String,
+    Boolean,
+    Default,
+}
+
+impl From<&TypeRef> for Scalar {
+    fn from(value: &TypeRef) -> Self {
+        match value.name.as_ref().map(|n| n.as_str()) {
+            Some("Int") => Scalar::Int,
+            Some("Float") => Scalar::Float,
+            Some("String") => Scalar::String,
+            Some("Boolean") => Scalar::Boolean,
+            Some(_) => Scalar::Default,
+            None => Scalar::Default,
+        }
+    }
+}
+
+pub fn get_type_from_name<'t>(types: &'t [FullType], name: &'t str) -> Option<&'t FullType> {
+    types
+        .into_iter()
+        .find(|t| t.name.as_ref().map(|s| s.as_str()) == Some(name))
+}
+
+pub fn type_ref_is_optional(type_ref: &TypeRef) -> bool {
+    type_ref
+        .kind
+        .pipe(|k| *k != __TypeKind::NON_NULL)
+        .unwrap_or(false)
+}
+
+pub fn type_field_has_optional(field: &FullTypeFields) -> bool {
+    field
+        .args
+        .pipe(|a| {
+            a.iter()
+                .map(|a| a.pipe(|a| &a.input_value))
+                .flatten()
+                .collect::<Vec<_>>()
+        })
+        .pipe(|s| input_values_has_optionals(s.as_slice()))
+        .unwrap_or(false)
+}
+
+pub fn type_ref_is_scalar(type_ref: &TypeRef) -> bool {
+    let mut type_ref = type_ref.clone();
+    if type_ref
+        .kind
+        .pipe(|k| *k == __TypeKind::NON_NULL)
+        .unwrap_or(false)
+    {
+        type_ref = *type_ref.of_type.unwrap().clone();
+    }
+
+    type_ref
+        .kind
+        .pipe(|k| *k == __TypeKind::SCALAR)
+        .unwrap_or(false)
+}
+
+pub fn type_ref_is_object(type_ref: &TypeRef) -> bool {
+    let mut type_ref = type_ref.clone();
+    if type_ref
+        .kind
+        .pipe(|k| *k == __TypeKind::NON_NULL)
+        .unwrap_or(false)
+    {
+        type_ref = *type_ref.of_type.unwrap().clone();
+    }
+
+    type_ref
+        .kind
+        .pipe(|k| *k == __TypeKind::OBJECT)
+        .unwrap_or(false)
+}
+
+pub fn type_ref_is_list(type_ref: &TypeRef) -> bool {
+    let mut type_ref = type_ref.clone();
+    if type_ref
+        .kind
+        .pipe(|k| *k == __TypeKind::NON_NULL)
+        .unwrap_or(false)
+    {
+        type_ref = *type_ref.of_type.unwrap().clone();
+    }
+
+    type_ref
+        .kind
+        .pipe(|k| *k == __TypeKind::LIST)
+        .unwrap_or(false)
+}
+
+pub fn type_ref_is_list_of_objects(type_ref: &TypeRef) -> bool {
+    let mut type_ref = type_ref.clone();
+    if type_ref
+        .kind
+        .pipe(|k| *k == __TypeKind::NON_NULL)
+        .unwrap_or(false)
+    {
+        type_ref = *type_ref.of_type.unwrap().clone();
+    }
+
+    if type_ref
+        .kind
+        .pipe(|k| *k == __TypeKind::LIST)
+        .unwrap_or(false)
+    {
+        type_ref = *type_ref.of_type.unwrap().clone();
+    }
+
+    type_ref_is_object(&type_ref)
+}
+
+pub fn input_values_has_optionals(input_values: &[&InputValue]) -> bool {
+    input_values
+        .into_iter()
+        .map(|k| type_ref_is_optional(&k.type_))
+        .filter(|k| *k)
+        .collect::<Vec<_>>()
+        .len()
+        > 0
+}
+
+pub fn input_values_is_empty(input_values: &[InputValue]) -> bool {
+    input_values.len() > 0
+}
+
+#[cfg(test)]
+mod test {
+    use dagger_core::introspection::{FullType, InputValue, TypeRef, __TypeKind};
+    use pretty_assertions::assert_eq;
+
+    use crate::functions::{input_values_has_optionals, type_ref_is_optional};
+
+    use super::get_type_from_name;
+
+    #[test]
+    fn get_type_from_name_has_no_item() {
+        let input = vec![];
+        let output = get_type_from_name(&input, "some-name");
+
+        assert_eq!(output.is_none(), true);
+    }
+
+    #[test]
+    fn get_type_from_name_has_item() {
+        let name = "some-name";
+        let input = vec![FullType {
+            kind: None,
+            name: Some(name.to_string()),
+            description: None,
+            fields: None,
+            input_fields: None,
+            interfaces: None,
+            enum_values: None,
+            possible_types: None,
+        }];
+        let output = get_type_from_name(&input, name);
+
+        assert_eq!(output.is_some(), true);
+    }
+
+    #[test]
+    fn get_type_from_name_has_item_multiple_entries() {
+        let name = "some-name";
+        let input = vec![
+            FullType {
+                kind: None,
+                name: Some(name.to_string()),
+                description: None,
+                fields: None,
+                input_fields: None,
+                interfaces: None,
+                enum_values: None,
+                possible_types: None,
+            },
+            FullType {
+                kind: None,
+                name: Some(name.to_string()),
+                description: None,
+                fields: None,
+                input_fields: None,
+                interfaces: None,
+                enum_values: None,
+                possible_types: None,
+            },
+        ];
+        let output = get_type_from_name(&input, name);
+
+        assert_eq!(output.is_some(), true);
+    }
+
+    #[test]
+    fn type_ref_is_optional_has_none() {
+        let input = TypeRef {
+            kind: None,
+            name: None,
+            of_type: None,
+        };
+        let output = type_ref_is_optional(&input);
+
+        assert_eq!(output, false);
+    }
+
+    #[test]
+    fn type_ref_is_optional_is_required() {
+        let input = TypeRef {
+            kind: Some(__TypeKind::NON_NULL),
+            name: None,
+            of_type: None,
+        };
+        let output = type_ref_is_optional(&input);
+
+        assert_eq!(output, false);
+    }
+
+    #[test]
+    fn type_ref_is_optional_is_optional() {
+        let input = TypeRef {
+            kind: Some(__TypeKind::OBJECT),
+            name: None,
+            of_type: None,
+        };
+        let output = type_ref_is_optional(&input);
+
+        assert_eq!(output, true);
+    }
+
+    #[test]
+    fn input_values_has_optionals_none() {
+        let input = vec![];
+
+        let output = input_values_has_optionals(&input);
+
+        assert_eq!(output, false);
+    }
+
+    #[test]
+    fn input_values_has_optionals_has_optional() {
+        let input = vec![
+            InputValue {
+                name: "some-name".to_string(),
+                description: None,
+                type_: TypeRef {
+                    kind: Some(__TypeKind::NON_NULL),
+                    name: None,
+                    of_type: None,
+                },
+                default_value: None,
+            },
+            InputValue {
+                name: "some-other-name".to_string(),
+                description: None,
+                type_: TypeRef {
+                    kind: Some(__TypeKind::OBJECT),
+                    name: None,
+                    of_type: None,
+                },
+                default_value: None,
+            },
+        ];
+
+        let output = input_values_has_optionals(input.iter().collect::<Vec<_>>().as_slice());
+
+        assert_eq!(output, true);
+    }
+
+    #[test]
+    fn input_values_has_optionals_is_required() {
+        let input = vec![
+            InputValue {
+                name: "some-name".to_string(),
+                description: None,
+                type_: TypeRef {
+                    kind: Some(__TypeKind::NON_NULL),
+                    name: None,
+                    of_type: None,
+                },
+                default_value: None,
+            },
+            InputValue {
+                name: "some-other-name".to_string(),
+                description: None,
+                type_: TypeRef {
+                    kind: Some(__TypeKind::NON_NULL),
+                    name: None,
+                    of_type: None,
+                },
+                default_value: None,
+            },
+        ];
+
+        let output = input_values_has_optionals(input.iter().collect::<Vec<_>>().as_slice());
+
+        assert_eq!(output, false);
+    }
+}

crates/dagger-codegen/src/generator.rs

@@ -0,0 +1,21 @@
+use std::sync::Arc;
+
+use dagger_core::introspection::Schema;
+
+pub trait Generator {
+    fn generate(&self, schema: Schema) -> eyre::Result<String>;
+}
+
+pub type DynGenerator = Arc<dyn Generator + Send + Sync>;
+
+pub trait FormatTypeRefs {
+    fn format_kind_list(representation: &str) -> String;
+    fn format_kind_scalar_string(representation: &str) -> String;
+    fn format_kind_scalar_int(representation: &str) -> String;
+    fn format_kind_scalar_float(representation: &str) -> String;
+    fn format_kind_scalar_boolean(representation: &str) -> String;
+    fn format_kind_scalar_default(representation: &str, ref_name: &str, input: bool) -> String;
+    fn format_kind_object(representation: &str, ref_name: &str) -> String;
+    fn format_kind_input_object(representation: &str, ref_name: &str) -> String;
+    fn format_kind_enum(representation: &str, ref_name: &str) -> String;
+}

crates/dagger-codegen/src/handlers/enumeration.rs

@@ -1,33 +0,0 @@
-use dagger_core::introspection::FullType;
-use genco::{prelude::rust, quote};
-
-use crate::predicates::is_enum_type;
-
-use super::{utility::render_description, Handler};
-
-pub struct Enumeration;
-
-impl Handler for Enumeration {
-    fn predicate(&self, t: &FullType) -> bool {
-        is_enum_type(t)
-    }
-
-    fn render(&self, t: &FullType) -> eyre::Result<rust::Tokens> {
-        let name = t
-            .name
-            .as_ref()
-            .ok_or(eyre::anyhow!("could not get name from type"))?;
-
-        let description =
-            render_description(t).ok_or(eyre::anyhow!("could not find description"))?;
-
-        let out = quote! {
-            $description
-            pub enum $name {
-                // TODO: Add individual items
-            }
-        };
-
-        Ok(out)
-    }
-}

crates/dagger-codegen/src/handlers/fields.rs

@@ -1,122 +0,0 @@
-use convert_case::{Case, Casing};
-use dagger_core::introspection::{FullTypeFields, FullTypeFieldsArgs};
-use genco::{prelude::rust, quote};
-
-use super::{
-    type_ref::{self, render_type_ref},
-    utility::{render_description_from_field, render_description_from_input_value},
-};
-
-pub fn render_fields(fields: &Vec<FullTypeFields>) -> eyre::Result<Option<rust::Tokens>> {
-    let mut collected_fields: Vec<rust::Tokens> = vec![];
-    for field in fields.iter() {
-        let name = field.name.as_ref().map(|n| n.to_case(Case::Snake)).unwrap();
-        let output = render_field_output(field)?;
-        let description = render_description_from_field(field);
-        let args = match field.args.as_ref() {
-            Some(a) => render_args(a),
-            None => None,
-        };
-
-        let mut tkns = rust::Tokens::new();
-
-        if let Some(args) = args.as_ref() {
-            tkns.append(quote! {
-                $description
-                pub struct $(&name)Args {
-                    $(&args.args)
-                }
-            });
-            tkns.push();
-        }
-
-        tkns.append(quote! {
-            pub fn $(&name)(
-                &self,
-                $(if let Some(_) = args.as_ref() => args: $(&name)Args)
-            ) -> $(&output) {
-                let query = self.selection.select($(field.name.as_ref().map(|n| format!("\"{}\"", n))));
-                $(if let Some(_) = args.as_ref() => query.args(args);)
-
-                $output {
-                    conn: self.conn.clone(),
-                    proc: self.proc.clone(),
-                    selection: query,
-                }
-
-                todo!()
-            }
-        });
-
-        collected_fields.push(tkns);
-    }
-
-    Ok(Some(quote! {
-        $(for field in collected_fields => $field $['\n'] )
-    }))
-}
-
-struct Arg {
-    name: String,
-    description: Option<rust::Tokens>,
-    type_: rust::Tokens,
-}
-
-struct CollectedArgs {
-    description: Option<rust::Tokens>,
-    args: rust::Tokens,
-}
-
-fn render_args(args: &[Option<FullTypeFieldsArgs>]) -> Option<CollectedArgs> {
-    let mut collected_args: Vec<Arg> = vec![];
-
-    for arg in args {
-        if let Some(arg) = arg.as_ref().map(|a| &a.input_value) {
-            let name = arg.name.clone();
-            let description = render_description_from_input_value(&arg, &name);
-            let t = render_type_ref(&arg.type_).unwrap();
-
-            collected_args.push(Arg {
-                name,
-                description,
-                type_: t,
-            })
-        }
-    }
-
-    if collected_args.len() > 0 {
-        let mut collected_arg = CollectedArgs {
-            description: Some(rust::Tokens::new()),
-            args: rust::Tokens::new(),
-        };
-
-        for arg in collected_args {
-            if let Some(desc) = arg.description {
-                if let Some(inner_desc) = collected_arg.description.as_mut() {
-                    inner_desc.append(desc);
-                    inner_desc.push();
-                }
-            }
-
-            collected_arg.args.append(quote! {
-                $(arg.name.to_case(Case::Snake)): $(arg.type_),
-            });
-            collected_arg.args.push();
-        }
-
-        if let Some(desc) = collected_arg.description.as_ref() {
-            if desc.is_empty() {
-                collected_arg.description = None;
-            }
-        }
-
-        Some(collected_arg)
-    } else {
-        None
-    }
-}
-
-pub fn render_field_output(field: &FullTypeFields) -> eyre::Result<rust::Tokens> {
-    let inner = &field.type_.as_ref().unwrap();
-    type_ref::render_type_ref(&inner.type_ref)
-}

crates/dagger-codegen/src/handlers/input.rs

@@ -1,110 +0,0 @@
-use dagger_core::introspection::FullType;
-use genco::prelude::rust;
-use genco::prelude::*;
-
-use crate::predicates::is_input_object_type;
-
-use super::{input_field::render_input_fields, utility::render_description, Handler};
-
-pub struct Input;
-
-impl Handler for Input {
-    fn predicate(&self, t: &FullType) -> bool {
-        is_input_object_type(t)
-    }
-
-    fn render(&self, t: &FullType) -> eyre::Result<rust::Tokens> {
-        let name = t
-            .name
-            .as_ref()
-            .ok_or(eyre::anyhow!("could not find name"))?;
-        let description = render_description(t);
-
-        //let input = rust::import("dagger_core", "Input");
-
-        let fields = match t.input_fields.as_ref() {
-            Some(i) => render_input_fields(i)?,
-            None => None,
-        };
-
-        let out = quote! {
-            $(if description.is_some() => $description)
-            pub struct $name {
-                $(if fields.is_some() => $fields)
-            }
-        };
-
-        Ok(out)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use dagger_core::introspection::{
-        FullType, FullTypeInputFields, InputValue, TypeRef, __TypeKind,
-    };
-    use pretty_assertions::assert_eq;
-
-    use crate::handlers::Handler;
-
-    use super::Input;
-
-    #[test]
-    fn can_gen_input() {
-        let input = Input {};
-        let t = FullType {
-            kind: Some(__TypeKind::INPUT_OBJECT),
-            name: Some("BuildArg".into()),
-            description: None,
-            input_fields: Some(vec![
-                FullTypeInputFields {
-                    input_value: InputValue {
-                        name: "name".into(),
-                        description: None,
-                        type_: TypeRef {
-                            name: None,
-                            kind: Some(__TypeKind::NON_NULL),
-                            of_type: Some(Box::new(TypeRef {
-                                kind: Some(__TypeKind::SCALAR),
-                                name: Some("String".into()),
-                                of_type: None,
-                            })),
-                        },
-                        default_value: None,
-                    },
-                },
-                FullTypeInputFields {
-                    input_value: InputValue {
-                        name: "value".into(),
-                        description: None,
-                        type_: TypeRef {
-                            name: None,
-                            kind: Some(__TypeKind::NON_NULL),
-                            of_type: Some(Box::new(TypeRef {
-                                kind: Some(__TypeKind::SCALAR),
-                                name: Some("String".into()),
-                                of_type: None,
-                            })),
-                        },
-                        default_value: None,
-                    },
-                },
-            ]),
-            interfaces: None,
-            enum_values: None,
-            possible_types: None,
-            fields: None,
-        };
-
-        let expected = r#"pub struct BuildArg {
-    pub name: String,
-
-    pub value: String,
-}
-"#;
-
-        let output = input.render(&t).unwrap();
-
-        assert_eq!(output.to_file_string().unwrap(), expected);
-    }
-}

crates/dagger-codegen/src/handlers/input_field.rs

@@ -1,22 +0,0 @@
-use dagger_core::introspection::FullTypeInputFields;
-use genco::{prelude::rust, quote};
-
-use super::type_ref;
-
-pub fn render_input_fields(
-    input_fields: &Vec<FullTypeInputFields>,
-) -> eyre::Result<Option<rust::Tokens>> {
-    let mut fields: Vec<(String, rust::Tokens)> = vec![];
-    for field in input_fields.iter() {
-        fields.push((field.input_value.name.clone(), render_input_field(field)?));
-    }
-
-    Ok(Some(quote! {
-        $(for (name, field) in fields => pub $name: $field, $['\n'] )
-    }))
-}
-
-pub fn render_input_field(field: &FullTypeInputFields) -> eyre::Result<rust::Tokens> {
-    let inner = &field.input_value.type_;
-    type_ref::render_type_ref(inner)
-}

crates/dagger-codegen/src/handlers/mod.rs

@@ -1,93 +0,0 @@
-pub mod enumeration;
-mod fields;
-pub mod input;
-mod input_field;
-pub mod object;
-pub mod scalar;
-mod type_ref;
-mod utility;
-
-use std::sync::Arc;
-
-use dagger_core::introspection::FullType;
-use genco::prelude::rust::Tokens;
-use genco::prelude::*;
-
-pub trait Handler {
-    fn predicate(&self, _t: &FullType) -> bool {
-        false
-    }
-
-    fn render(&self, t: &FullType) -> eyre::Result<rust::Tokens> {
-        let tstruct = self.render_struct(t)?;
-        let timpl = self.render_impl(t)?;
-        let mut out = rust::Tokens::new();
-        out.append(tstruct);
-        out.push();
-        out.append(timpl);
-        out.push();
-        Ok(out)
-    }
-
-    fn render_struct(&self, t: &FullType) -> eyre::Result<Tokens> {
-        let name = t.name.as_ref().ok_or(eyre::anyhow!("name not found"))?;
-
-        Ok(quote! {
-            pub struct $name {} {
-                // TODO: Add fields
-            }
-        })
-    }
-
-    fn render_impl(&self, t: &FullType) -> eyre::Result<Tokens> {
-        let name = t.name.as_ref().ok_or(eyre::anyhow!("name not found"))?;
-
-        Ok(quote! {
-            impl $name {} {
-                // TODO: Add fields
-            }
-        })
-    }
-}
-
-pub type DynHandler = Arc<dyn Handler + Send + Sync>;
-pub type Handlers = Vec<DynHandler>;
-
-#[cfg(test)]
-mod tests {
-    use dagger_core::introspection::FullType;
-    use pretty_assertions::assert_eq;
-
-    use super::Handler;
-
-    struct DefaultHandler;
-    impl Handler for DefaultHandler {}
-
-    #[test]
-    fn render_returns_expected() {
-        let handler = DefaultHandler {};
-        let t = FullType {
-            kind: None,
-            name: Some("SomeName".into()),
-            description: None,
-            fields: None,
-            input_fields: None,
-            interfaces: None,
-            enum_values: None,
-            possible_types: None,
-        };
-
-        let res = handler.render(&t).unwrap();
-
-        assert_eq!(
-            res.to_string().unwrap(),
-            "pub struct SomeName {} {
-
-}
-impl SomeName {} {
-
-}"
-            .to_string()
-        );
-    }
-}

crates/dagger-codegen/src/handlers/object.rs

@@ -1,167 +0,0 @@
-use dagger_core::introspection::FullType;
-use genco::{prelude::rust, quote};
-
-use crate::predicates::is_object_type;
-
-use super::{fields, input_field, utility::render_description, Handler};
-
-pub struct Object;
-
-impl Handler for Object {
-    fn predicate(&self, t: &FullType) -> bool {
-        is_object_type(t)
-    }
-
-    fn render(&self, t: &FullType) -> eyre::Result<rust::Tokens> {
-        let name = t
-            .name
-            .as_ref()
-            .ok_or(eyre::anyhow!("could not find name"))?;
-        let description = render_description(t);
-
-        let fields = match t.fields.as_ref() {
-            Some(i) => fields::render_fields(i)?,
-            None => None,
-        };
-
-        let input_fields = match t.input_fields.as_ref() {
-            Some(i) => input_field::render_input_fields(i)?,
-            None => None,
-        };
-
-        let out = quote! {
-            $(if description.is_some() => $description)
-            pub struct $name {
-                $(if input_fields.is_some() => $input_fields)
-            }
-
-            impl $name {
-                $(if fields.is_some() => $fields)
-            }
-        };
-
-        Ok(out)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use dagger_core::introspection::{
-        FullType, FullTypeFields, FullTypeFieldsArgs, FullTypeFieldsType, InputValue, TypeRef,
-        __TypeKind,
-    };
-    use pretty_assertions::assert_eq;
-
-    use crate::handlers::Handler;
-
-    use super::Object;
-
-    #[test]
-    fn can_render_object() {
-        let t: FullType = FullType {
-            kind: Some(__TypeKind::OBJECT),
-            name: Some("CacheVolume".into()),
-            description: Some("A directory whose contents persists across sessions".into()),
-            fields: Some(vec![FullTypeFields {
-                name: Some("id".into()),
-                description: None,
-                args: None,
-                type_: Some(FullTypeFieldsType {
-                    type_ref: TypeRef {
-                        kind: Some(__TypeKind::NON_NULL),
-                        name: None,
-                        of_type: Some(Box::new(TypeRef {
-                            kind: Some(__TypeKind::SCALAR),
-                            name: Some("CacheID".into()),
-                            of_type: None,
-                        })),
-                    },
-                }),
-                is_deprecated: Some(false),
-                deprecation_reason: None,
-            }]),
-            input_fields: None,
-            interfaces: None,
-            enum_values: None,
-            possible_types: None,
-        };
-        let expected = r#"
-/// A directory whose contents persists across sessions
-pub struct CacheVolume {}
-
-impl CacheVolume {
-    pub fn id(
-        &self,
-    ) -> CacheID {
-        let query = self.selection.select("id");
-
-        CacheID {
-            conn: self.conn.clone(),
-            proc: self.proc.clone(),
-            selection: query,
-        }
-
-        todo!()
-    }
-}
-"#;
-        let handler = Object {};
-        let obj = handler.render(&t).unwrap();
-        let actual = obj.to_file_string().unwrap();
-
-        assert_eq!(actual, expected);
-    }
-
-    #[test]
-    fn can_render_query_container() {
-        let t: FullType = FullType {
-            kind: Some(__TypeKind::OBJECT),
-            name: Some("Query".into()),
-            description: None,
-            fields: Some(vec![FullTypeFields {
-                name: Some("container".into()),
-                description: Some("Loads a container from ID.\nNull ID returns an empty container (scratch).\nOptional platform argument initializes new containers to execute and publish as that platform. Platform defaults to that of the builder's host.".into()),
-                args: Some(
-                    vec![
-                    Some(
-                        FullTypeFieldsArgs
-                        {
-                        input_value: InputValue { name: "id".into(), description: None, type_: TypeRef { kind: Some(__TypeKind::SCALAR), name: Some("ContainerID".into()), of_type: None }, default_value: None } 
-                    }
-                        ),
-                    Some(
-                        FullTypeFieldsArgs {
-                        input_value: InputValue {
-                            name: "platform".into(), description: None, type_: TypeRef { kind: Some(__TypeKind::SCALAR), name: Some("Platform".into()), of_type: None }, 
-                            default_value: None }
-                    })
-                ]),
-                type_: Some(FullTypeFieldsType {
-                    type_ref: TypeRef {
-                        kind: Some(__TypeKind::NON_NULL),
-                        name: None,
-                        of_type: Some(Box::new(TypeRef {
-                            kind: Some(__TypeKind::SCALAR),
-                            name: Some("CacheID".into()),
-                            of_type: None,
-                        })),
-                    },
-                }),
-                is_deprecated: Some(false),
-                deprecation_reason: None,
-            }
-            ]),
-            input_fields: None,
-            interfaces: None,
-            enum_values: None,
-            possible_types: None,
-        };
-        let expected = r#"
-"#;
-        let handler = Object {};
-        let obj = handler.render(&t).unwrap();
-        let actual = obj.to_file_string().unwrap();
-
-        assert_eq!(actual, expected);
-    }
-}

crates/dagger-codegen/src/handlers/scalar.rs

@@ -1,42 +0,0 @@
-use dagger_core::introspection::FullType;
-use genco::{prelude::rust, quote};
-
-use crate::predicates::is_custom_scalar_type;
-
-use super::{utility::render_description, Handler};
-
-pub struct Scalar;
-
-impl Handler for Scalar {
-    fn predicate(&self, t: &FullType) -> bool {
-        is_custom_scalar_type(t)
-    }
-
-    fn render(&self, t: &FullType) -> eyre::Result<rust::Tokens> {
-        let mut out = rust::Tokens::new();
-
-        let description =
-            render_description(t).ok_or(eyre::anyhow!("could not find description"))?;
-        let tstruct = self.render_struct(t)?;
-
-        out.append(description);
-        out.push();
-        out.append(tstruct);
-
-        Ok(out)
-    }
-
-    fn render_struct(&self, t: &FullType) -> eyre::Result<genco::prelude::rust::Tokens> {
-        let name = t.name.as_ref().ok_or(eyre::anyhow!("name not found"))?;
-
-        let scalar = rust::import("dagger_core", "Scalar");
-
-        Ok(quote! {
-            pub struct $name($scalar);
-        })
-    }
-
-    fn render_impl(&self, _t: &FullType) -> eyre::Result<genco::prelude::rust::Tokens> {
-        todo!()
-    }
-}

crates/dagger-codegen/src/handlers/type_ref.rs

@@ -1,97 +0,0 @@
-use dagger_core::introspection::TypeRef;
-use genco::prelude::rust;
-use genco::prelude::*;
-
-use crate::predicates::{
-    is_custom_scalar_type_ref, is_list_type, is_required_type_ref, is_scalar_type_ref,
-};
-
-pub fn render_type_ref(inner: &TypeRef) -> eyre::Result<rust::Tokens> {
-    let extract_of_type = |t: &TypeRef| -> Option<TypeRef> {
-        return t.clone().of_type.map(|t| *t);
-    };
-
-    let (optional, inner) = if !is_required_type_ref(inner) {
-        (true, inner.clone())
-    } else {
-        (false, extract_of_type(inner).unwrap())
-    };
-
-    if is_list_type(&inner) {
-        if let Some(inner_of_type) = extract_of_type(&inner) {
-            let inner_field = render_type_ref(&inner_of_type)?;
-            if optional {
-                return Ok(quote! {
-                    Option<Vec<$inner_field>>
-                });
-            }
-            return Ok(quote! {
-                Vec<$inner_field>
-            });
-        }
-    }
-
-    if is_custom_scalar_type_ref(&inner) {
-        if let Some(inner_of_type) = extract_of_type(&inner) {
-            let inner_field = render_type_ref(&inner_of_type)?;
-            if optional {
-                return Ok(quote! {
-                    Option<$inner_field>
-                });
-            }
-            return Ok(quote! {
-                $inner_field
-            });
-        }
-    }
-
-    if is_scalar_type_ref(&inner) {
-        let name = match inner.name.as_ref().map(|s| s.as_str()) {
-            Some("ID") => "ID",
-            Some("Int") => "Int",
-            Some("String") => "String",
-            Some("Float") => "Float",
-            Some("Boolean") => "Boolean",
-            Some("Date") => "Date",
-            Some("DateTime") => "DateTime",
-            Some("Time") => "Time",
-            Some("Decimal") => "Decimal",
-            Some(n) => n,
-            _ => eyre::bail!("missing type in the end of chain"),
-        };
-
-        if optional {
-            return Ok(quote! {
-                Option<$name>
-            });
-        }
-
-        return Ok(quote! {
-            $name
-        });
-    }
-
-    if let Some(inner_type) = inner.of_type.as_ref() {
-        let inner_field = render_type_ref(&inner_type)?;
-        if optional {
-            return Ok(quote! {
-                Option<$inner_field>
-            });
-        }
-
-        return Ok(inner_field);
-    }
-
-    if let Some(name) = inner.name.as_ref() {
-        if optional {
-            return Ok(quote! {
-                Option<$name>
-            });
-        }
-        return Ok(quote! {
-            $name
-        });
-    }
-
-    eyre::bail!("could not determine type")
-}

crates/dagger-codegen/src/handlers/utility.rs

@@ -1,56 +0,0 @@
-use dagger_core::introspection::{FullType, FullTypeFields, InputValue};
-use genco::{prelude::*, quote};
-
-pub fn render_description(t: &FullType) -> Option<rust::Tokens> {
-    if let Some(description) = t.description.as_ref() {
-        let lines = description.split('\n');
-        let output: rust::Tokens = quote! {
-            $(for line in lines => $(format!("\n/// {line}")))
-        };
-
-        return Some(output);
-    }
-
-    None
-}
-
-pub fn render_description_from_field(t: &FullTypeFields) -> Option<rust::Tokens> {
-    if let Some(description) = t.description.as_ref() {
-        let lines = description.split('\n');
-        let output: rust::Tokens = quote! {
-            $(for line in lines => $(format!("\n/// {line}")))
-        };
-
-        return Some(output);
-    }
-
-    None
-}
-
-pub fn render_description_from_input_value(t: &InputValue, name: &String) -> Option<rust::Tokens> {
-    if let Some(description) = t.description.as_ref() {
-        if description == "" {
-            return None;
-        }
-        let lines = description.split('\n').collect::<Vec<&str>>();
-        let mut output = rust::Tokens::new();
-
-        if let Some(line) = lines.first() {
-            output.append(quote! {
-                $(format!("/// * `{name}` - {line}"))
-            });
-            output.push();
-        }
-
-        for line in lines.iter().skip(1) {
-            output.append(quote! {
-                $(format!("///   {line}"))
-            });
-            output.push();
-        }
-
-        return Some(output);
-    }
-
-    None
-}

crates/dagger-codegen/src/lib.rs

@@ -1,4 +1,25 @@
-pub mod codegen;
+mod functions;
-mod handlers;
+mod generator;
-mod models;
+pub mod rust;
-mod predicates;
+pub mod utility;
+mod visitor;
+
+use dagger_core::introspection::Schema;
+
+use self::generator::DynGenerator;
+
+fn set_schema_parents(mut schema: Schema) -> Schema {
+    for t in schema.types.as_mut().into_iter().flatten().flatten() {
+        let t_parent = t.full_type.clone();
+        for mut field in t.full_type.fields.as_mut().into_iter().flatten() {
+            field.parent_type = Some(t_parent.clone());
+        }
+    }
+
+    return schema;
+}
+
+pub fn generate(schema: Schema, generator: DynGenerator) -> eyre::Result<String> {
+    let schema = set_schema_parents(schema);
+    generator.generate(schema)
+}

crates/dagger-codegen/src/models.rs

@@ -1,11 +0,0 @@
-pub enum Scalars {
-    ID(String),
-    Int(usize),
-    String(String),
-    Float(f64),
-    Boolean(bool),
-    Date(String),
-    DateTime(String),
-    Time(String),
-    Decimal(f64),
-}

crates/dagger-codegen/src/predicates.rs

@@ -1,101 +0,0 @@
-use dagger_core::introspection::{FullType, FullTypeInputFields, TypeRef, __TypeKind};
-
-use crate::models::Scalars;
-
-pub fn is_scalar_type(t: &FullType) -> bool {
-    if let Some(__TypeKind::SCALAR) = t.kind {
-        return true;
-    }
-    false
-}
-
-pub fn is_scalar_type_ref(t: &TypeRef) -> bool {
-    if let Some(__TypeKind::SCALAR) = t.kind {
-        return true;
-    }
-    false
-}
-
-pub fn is_enum_type(t: &FullType) -> bool {
-    if let Some(__TypeKind::ENUM) = t.kind {
-        return true;
-    }
-    false
-}
-
-pub fn is_input_object_type(t: &FullType) -> bool {
-    if let Some(__TypeKind::INPUT_OBJECT) = t.kind {
-        return true;
-    }
-    false
-}
-
-pub fn is_required_type(t: &FullTypeInputFields) -> bool {
-    match t.input_value.type_.kind {
-        Some(__TypeKind::NON_NULL) => return true,
-        Some(_) => return false,
-        _ => return false,
-    }
-}
-
-pub fn is_required_type_ref(t: &TypeRef) -> bool {
-    match t.kind {
-        Some(__TypeKind::NON_NULL) => return true,
-        Some(_) => return false,
-        _ => return false,
-    }
-}
-
-pub fn is_list_type(t: &TypeRef) -> bool {
-    if let Some(__TypeKind::LIST) = t.kind {
-        return true;
-    }
-    false
-}
-
-pub fn is_object_type(t: &FullType) -> bool {
-    if let Some(__TypeKind::OBJECT) = t.kind {
-        return true;
-    }
-    false
-}
-
-pub fn is_custom_scalar_type(t: &FullType) -> bool {
-    if is_scalar_type(t) {
-        // TODO: Insert scalar
-        let _ = match t.name.as_ref().map(|s| s.as_str()) {
-            Some("ID") => Scalars::ID("ID".into()),
-            Some("Int") => Scalars::Int(0),
-            Some("String") => Scalars::String("ID".into()),
-            Some("Float") => Scalars::Float(0.0),
-            Some("Boolean") => Scalars::Boolean(false),
-            Some("Date") => Scalars::Date("ID".into()),
-            Some("DateTime") => Scalars::DateTime("ID".into()),
-            Some("Time") => Scalars::Time("ID".into()),
-            Some("Decimal") => Scalars::Decimal(0.0),
-            Some(_) => return true,
-            None => return false,
-        };
-    }
-    false
-}
-
-pub fn is_custom_scalar_type_ref(t: &TypeRef) -> bool {
-    if is_scalar_type_ref(t) {
-        // TODO: Insert scalar
-        let _ = match t.name.as_ref().map(|s| s.as_str()) {
-            Some("ID") => Scalars::ID("ID".into()),
-            Some("Int") => Scalars::Int(0),
-            Some("String") => Scalars::String("ID".into()),
-            Some("Float") => Scalars::Float(0.0),
-            Some("Boolean") => Scalars::Boolean(false),
-            Some("Date") => Scalars::Date("ID".into()),
-            Some("DateTime") => Scalars::DateTime("ID".into()),
-            Some("Time") => Scalars::Time("ID".into()),
-            Some("Decimal") => Scalars::Decimal(0.0),
-            Some(_) => return true,
-            None => return false,
-        };
-    }
-    false
-}

crates/dagger-codegen/src/rust/format.rs

@@ -0,0 +1,64 @@
+use crate::functions::FormatTypeFuncs;
+
+use super::functions::format_name;
+
+pub struct FormatTypeFunc;
+
+impl FormatTypeFuncs for FormatTypeFunc {
+    fn format_kind_list(&self, representation: &str) -> String {
+        format!("Vec<{}>", representation)
+    }
+
+    fn format_kind_scalar_string(&self, representation: &str) -> String {
+        let mut rep = representation.to_string();
+        rep.push_str("String");
+        rep
+    }
+
+    fn format_kind_scalar_int(&self, representation: &str) -> String {
+        let mut rep = representation.to_string();
+        rep.push_str("isize");
+        rep
+    }
+
+    fn format_kind_scalar_float(&self, representation: &str) -> String {
+        let mut rep = representation.to_string();
+        rep.push_str("float");
+        rep
+    }
+
+    fn format_kind_scalar_boolean(&self, representation: &str) -> String {
+        let mut rep = representation.to_string();
+        rep.push_str("bool");
+        rep
+    }
+
+    fn format_kind_scalar_default(
+        &self,
+        representation: &str,
+        ref_name: &str,
+        input: bool,
+    ) -> String {
+        let mut rep = representation.to_string();
+        rep.push_str(&format_name(ref_name));
+        rep
+    }
+
+    fn format_kind_object(&self, representation: &str, ref_name: &str) -> String {
+        let mut rep = representation.to_string();
+        rep.push_str(&format_name(ref_name));
+        rep
+    }
+
+    fn format_kind_input_object(&self, representation: &str, ref_name: &str) -> String {
+        let mut rep = representation.to_string();
+        rep.push_str(&format_name(ref_name));
+        rep
+    }
+
+    fn format_kind_enum(&self, representation: &str, ref_name: &str) -> String {
+        let mut rep = representation.to_string();
+        rep.push_str(&format_name(ref_name));
+        rep
+    }
+}

crates/dagger-codegen/src/rust/functions.rs

@@ -0,0 +1,206 @@
+use convert_case::{Case, Casing};
+use dagger_core::introspection::FullTypeFields;
+use genco::prelude::rust;
+use genco::quote;
+use genco::tokens::quoted;
+
+use crate::functions::{
+    type_field_has_optional, type_ref_is_list, type_ref_is_list_of_objects, type_ref_is_object,
+    type_ref_is_optional, type_ref_is_scalar, CommonFunctions,
+};
+use crate::utility::OptionExt;
+
+pub fn format_name(s: &str) -> String {
+    s.to_case(Case::Pascal)
+}
+
+pub fn format_struct_name(s: &str) -> String {
+    s.to_case(Case::Snake)
+}
+
+pub fn field_options_struct_name(field: &FullTypeFields) -> Option<String> {
+    field
+        .parent_type
+        .as_ref()
+        .map(|p| p.name.as_ref().map(|n| format_name(n)))
+        .flatten()
+        .zip(field.name.as_ref().map(|n| format_name(n)))
+        .map(|(parent_name, field_name)| format!("{parent_name}{field_name}Opts"))
+}
+
+pub fn format_function(funcs: &CommonFunctions, field: &FullTypeFields) -> Option<rust::Tokens> {
+    let signature = quote! {
+        pub fn $(field.name.pipe(|n | format_struct_name(n)))
+    };
+    let args = format_function_args(funcs, field);
+
+    let output_type = field
+        .type_
+        .pipe(|t| &t.type_ref)
+        .pipe(|t| funcs.format_output_type(t));
+
+    Some(quote! {
+        $(signature)(
+            $(args)
+        ) -> $(output_type) {
+            let mut query = self.selection.select($(quoted(field.name.as_ref())));
+
+            $(render_required_args(funcs, field))
+            $(render_optional_args(funcs, field))
+
+            $(render_execution(funcs, field))
+        }
+    })
+}
+
+fn render_required_args(funcs: &CommonFunctions, field: &FullTypeFields) -> Option<rust::Tokens> {
+    if let Some(args) = field.args.as_ref() {
+        let args = args
+            .into_iter()
+            .map(|a| {
+                a.as_ref().and_then(|s| {
+                    if type_ref_is_optional(&s.input_value.type_) {
+                        return None;
+                    }
+
+                    let n = format_struct_name(&s.input_value.name);
+                    let name = &s.input_value.name;
+
+                    Some(quote! {
+                        query = query.arg($(quoted(name)), $(n)).unwrap();
+                    })
+                })
+            })
+            .flatten()
+            .collect::<Vec<_>>();
+        let required_args = quote! {
+            $(for arg in args join ($['\r']) => $arg)
+        };
+
+        Some(required_args)
+    } else {
+        None
+    }
+}
+
+fn render_optional_args(funcs: &CommonFunctions, field: &FullTypeFields) -> Option<rust::Tokens> {
+    if let Some(args) = field.args.as_ref() {
+        let args = args
+            .into_iter()
+            .map(|a| {
+                a.as_ref().and_then(|s| {
+                    if !type_ref_is_optional(&s.input_value.type_) {
+                        return None;
+                    }
+
+                    let n = format_struct_name(&s.input_value.name);
+                    let name = &s.input_value.name;
+
+                    Some(quote! {
+                        if let Some($(&n)) = opts.$(&n) {
+                            query = query.arg($(quoted(name)), $(&n)).unwrap();
+                        }
+                    })
+                })
+            })
+            .flatten()
+            .collect::<Vec<_>>();
+
+        if args.len() == 0 {
+            return None;
+        }
+
+        let required_args = quote! {
+            if let Some(opts) = opts {
+                $(for arg in args join ($['\r']) => $arg)
+            }
+        };
+
+        Some(required_args)
+    } else {
+        None
+    }
+}
+
+fn render_execution(funcs: &CommonFunctions, field: &FullTypeFields) -> rust::Tokens {
+    if let Some(true) = field.type_.pipe(|t| type_ref_is_object(&t.type_ref)) {
+        let output_type = funcs.format_output_type(&field.type_.as_ref().unwrap().type_ref);
+        return quote! {
+            return $(output_type) {
+                proc: self.proc.clone(),
+                selection: query,
+                conn: self.conn.clone(),
+            }
+        };
+    }
+
+    if let Some(true) = field
+        .type_
+        .pipe(|t| type_ref_is_list_of_objects(&t.type_ref))
+    {
+        let output_type = funcs.format_output_type(
+            &field
+                .type_
+                .as_ref()
+                .unwrap()
+                .type_ref
+                .of_type
+                .as_ref()
+                .unwrap()
+                .of_type
+                .as_ref()
+                .unwrap(),
+        );
+        return quote! {
+            return vec![$(output_type) {
+                proc: self.proc.clone(),
+                selection: query,
+                conn: self.conn.clone(),
+            }]
+        };
+    }
+
+    let graphql_client = rust::import("crate::client", "graphql_client");
+
+    quote! {
+        query.execute(&$graphql_client(&self.conn)).unwrap().unwrap()
+    }
+}
+
+fn format_function_args(funcs: &CommonFunctions, field: &FullTypeFields) -> Option<rust::Tokens> {
+    if let Some(args) = field.args.as_ref() {
+        let args = args
+            .into_iter()
+            .map(|a| {
+                a.as_ref().and_then(|s| {
+                    if type_ref_is_optional(&s.input_value.type_) {
+                        return None;
+                    }
+
+                    let t = funcs.format_input_type(&s.input_value.type_);
+                    let n = format_struct_name(&s.input_value.name);
+
+                    Some(quote! {
+                        $(n): $(t),
+                    })
+                })
+            })
+            .flatten()
+            .collect::<Vec<_>>();
+        let required_args = quote! {
+            &self,
+            $(for arg in args join ($['\r']) => $arg)
+        };
+
+        if type_field_has_optional(field) {
+            Some(quote! {
+                $(required_args)
+                opts: Option<$(field_options_struct_name(field))>
+            })
+        } else {
+            Some(required_args)
+        }
+    } else {
+        None
+    }
+}

crates/dagger-codegen/src/rust/mod.rs

@@ -0,0 +1,114 @@
+pub mod format;
+mod functions;
+pub mod templates;
+
+use std::sync::{Arc, Mutex};
+
+use dagger_core::introspection::Schema;
+use eyre::Context;
+use genco::prelude::rust;
+
+use crate::functions::CommonFunctions;
+use crate::generator::Generator;
+use crate::visitor::{VisitHandlers, Visitor};
+
+use self::format::FormatTypeFunc;
+use self::templates::enum_tmpl::render_enum;
+use self::templates::input_tmpl::render_input;
+use self::templates::object_tmpl::render_object;
+use self::templates::scalar_tmpl::render_scalar;
+
+pub struct RustGenerator {}
+
+impl Generator for RustGenerator {
+    fn generate(&self, schema: Schema) -> eyre::Result<String> {
+        let render = Arc::new(Mutex::new(rust::Tokens::new()));
+        let common_funcs = Arc::new(CommonFunctions::new(Arc::new(FormatTypeFunc {})));
+        println!("generating dagger for rust");
+
+        let visitor = Visitor {
+            schema,
+            handlers: VisitHandlers {
+                visit_scalar: Arc::new({
+                    let render = render.clone();
+                    let common_funcs = common_funcs.clone();
+
+                    move |t| {
+                        println!("generating scalar");
+                        let rendered_scalar = render_scalar(t)?;
+
+                        let mut render = render.lock().unwrap();
+
+                        render.append(rendered_scalar);
+                        render.push();
+
+                        println!("generated scalar");
+
+                        Ok(())
+                    }
+                }),
+                visit_object: Arc::new({
+                    let render = render.clone();
+                    let common_funcs = common_funcs.clone();
+
+                    move |t| {
+                        println!("generating object");
+                        let rendered_scalar = render_object(&common_funcs, t)?;
+
+                        let mut render = render.lock().unwrap();
+
+                        render.append(rendered_scalar);
+                        render.push();
+                        println!("generated object");
+
+                        Ok(())
+                    }
+                }),
+                visit_input: Arc::new({
+                    let render = render.clone();
+                    let common_funcs = common_funcs.clone();
+
+                    move |t| {
+                        println!("generating input");
+                        let rendered_scalar = render_input(&common_funcs, t)?;
+
+                        let mut render = render.lock().unwrap();
+
+                        render.append(rendered_scalar);
+                        render.push();
+                        println!("generated input");
+
+                        Ok(())
+                    }
+                }),
+                visit_enum: Arc::new({
+                    let render = render.clone();
+                    let common_funcs = common_funcs.clone();
+
+                    move |t| {
+                        println!("generating enum");
+                        let rendered_scalar = render_enum(t)?;
+
+                        let mut render = render.lock().unwrap();
+
+                        render.append(rendered_scalar);
+                        render.push();
+                        println!("generated enum");
+
+                        Ok(())
+                    }
+                }),
+            },
+        };
+
+        visitor.run()?;
+
+        println!("done generating objects");
+
+        let rendered = render.lock().unwrap();
+
+        rendered
+            .to_file_string()
+            .context("could not render to file string")
+    }
+}

crates/dagger-codegen/src/rust/templates/enum_tmpl.rs

@@ -0,0 +1,33 @@
+use dagger_core::introspection::FullType;
+use genco::prelude::rust;
+use genco::quote;
+
+fn render_enum_values(values: &FullType) -> Option<rust::Tokens> {
+    let values = values
+        .enum_values
+        .as_ref()
+        .into_iter()
+        .map(|values| {
+            values
+                .into_iter()
+                .map(|val| quote! { $(val.name.as_ref()) })
+        })
+        .flatten()
+        .collect::<Vec<_>>();
+
+    let mut tokens = rust::Tokens::new();
+    for val in values {
+        tokens.append(val);
+        tokens.push();
+    }
+
+    Some(tokens)
+}
+
+pub fn render_enum(t: &FullType) -> eyre::Result<rust::Tokens> {
+    Ok(quote! {
+        pub enum $(t.name.as_ref()) {
+            $(render_enum_values(t))
+        }
+    })
+}

crates/dagger-codegen/src/rust/templates/input_tmpl.rs

@@ -0,0 +1,38 @@
+use dagger_core::introspection::{FullType, FullTypeInputFields};
+use genco::prelude::rust;
+use genco::quote;
+
+use crate::functions::CommonFunctions;
+use crate::rust::functions::{format_name, format_struct_name};
+
+pub fn render_input(funcs: &CommonFunctions, t: &FullType) -> eyre::Result<rust::Tokens> {
+    let deserialize = rust::import("serde", "Deserialize");
+    let serialize = rust::import("serde", "Serialize");
+    Ok(quote! {
+        #[derive($serialize, $deserialize)]
+        pub struct $(format_name(t.name.as_ref().unwrap())) {
+            $(render_input_fields(funcs, t.input_fields.as_ref().unwrap_or(&Vec::new())  ))
+        }
+    })
+}
+
+pub fn render_input_fields(
+    funcs: &CommonFunctions,
+    fields: &[FullTypeInputFields],
+) -> Option<rust::Tokens> {
+    let rendered_fields = fields.iter().map(|f| render_input_field(funcs, f));
+
+    if rendered_fields.len() == 0 {
+        None
+    } else {
+        Some(quote! {
+            $(for field in rendered_fields join ($['\r']) => $field)
+        })
+    }
+}
+
+pub fn render_input_field(funcs: &CommonFunctions, field: &FullTypeInputFields) -> rust::Tokens {
+    quote! {
+        pub $(format_struct_name(&field.input_value.name)): $(funcs.format_input_type(&field.input_value.type_)),
+    }
+}

crates/dagger-codegen/src/rust/templates/mod.rs

@@ -0,0 +1,4 @@
+pub mod enum_tmpl;
+pub mod input_tmpl;
+pub mod object_tmpl;
+pub mod scalar_tmpl;

crates/dagger-codegen/src/rust/templates/object_tmpl.rs

@@ -0,0 +1,112 @@
+use dagger_core::introspection::{FullType, FullTypeFields, FullTypeFieldsArgs};
+use genco::prelude::rust;
+use genco::quote;
+
+use crate::functions::{type_ref_is_optional, CommonFunctions};
+use crate::rust::functions::{
+    field_options_struct_name, format_function, format_name, format_struct_name,
+};
+use crate::utility::OptionExt;
+
+pub fn render_object(funcs: &CommonFunctions, t: &FullType) -> eyre::Result<rust::Tokens> {
+    let selection = rust::import("crate::querybuilder", "Selection");
+    let child = rust::import("std::process", "Child");
+    let conn = rust::import("dagger_core::connect_params", "ConnectParams");
+    let arc = rust::import("std::sync", "Arc");
+
+    Ok(quote! {
+        pub struct $(t.name.pipe(|s| format_name(s))) {
+            pub proc: $arc<$child>,
+            pub selection: $selection,
+            pub conn: $conn,
+        }
+
+        $(t.fields.pipe(|f| render_optional_args(funcs, f)))
+
+        impl $(t.name.pipe(|s| format_name(s))) {
+            $(t.fields.pipe(|f| render_functions(funcs, f)))
+        }
+    })
+}
+
+fn render_optional_args(
+    funcs: &CommonFunctions,
+    fields: &Vec<FullTypeFields>,
+) -> Option<rust::Tokens> {
+    let rendered_fields = fields
+        .iter()
+        .map(|f| render_optional_arg(funcs, f))
+        .flatten()
+        .collect::<Vec<_>>();
+
+    if rendered_fields.len() == 0 {
+        None
+    } else {
+        Some(quote! {
+            $(for field in rendered_fields join ($['\r']) => $field)
+        })
+    }
+}
+
+fn render_optional_arg(funcs: &CommonFunctions, field: &FullTypeFields) -> Option<rust::Tokens> {
+    let output_type = field_options_struct_name(field);
+    let fields = field
+        .args
+        .pipe(|t| t.into_iter().flatten().collect::<Vec<_>>())
+        .map(|t| {
+            t.into_iter()
+                .filter(|t| type_ref_is_optional(&t.input_value.type_))
+                .collect::<Vec<_>>()
+        })
+        .pipe(|t| render_optional_field_args(funcs, t))
+        .flatten();
+
+    if let Some(fields) = fields {
+        Some(quote! {
+            pub struct $output_type {
+                $fields
+            }
+        })
+    } else {
+        None
+    }
+}
+
+fn render_optional_field_args(
+    funcs: &CommonFunctions,
+    args: &Vec<&FullTypeFieldsArgs>,
+) -> Option<rust::Tokens> {
+    if args.len() == 0 {
+        return None;
+    }
+    let rendered_args = args.into_iter().map(|a| &a.input_value).map(|a| {
+        quote! {
+            pub $(format_struct_name(&a.name)): Option<$(funcs.format_output_type(&a.type_))>,
+        }
+    });
+
+    Some(quote! {
+        $(for arg in rendered_args join ($['\r']) => $arg)
+    })
+}
+
+fn render_functions(funcs: &CommonFunctions, fields: &Vec<FullTypeFields>) -> Option<rust::Tokens> {
+    let rendered_functions = fields
+        .iter()
+        .map(|f| render_function(funcs, f))
+        .collect::<Vec<_>>();
+
+    if rendered_functions.len() > 0 {
+        Some(quote! {
+            $(for func in rendered_functions join ($['\r']) => $func)
+        })
+    } else {
+        None
+    }
+}
+
+fn render_function(funcs: &CommonFunctions, field: &FullTypeFields) -> Option<rust::Tokens> {
+    Some(quote! {
+        $(format_function(funcs, field))
+    })
+}

crates/dagger-codegen/src/rust/templates/scalar_tmpl.rs

@@ -0,0 +1,16 @@
+use dagger_core::introspection::FullType;
+use genco::prelude::rust;
+use genco::quote;
+
+use crate::rust::functions::format_name;
+use crate::utility::OptionExt;
+
+pub fn render_scalar(t: &FullType) -> eyre::Result<rust::Tokens> {
+    let deserialize = rust::import("serde", "Deserialize");
+    let serialize = rust::import("serde", "Serialize");
+
+    Ok(quote! {
+        #[derive($serialize, $deserialize)]
+        pub struct $(t.name.pipe(|n|format_name(n)))(String);
+    })
+}

crates/dagger-codegen/src/utility.rs

@@ -0,0 +1,18 @@
+pub trait OptionExt<'t, T: 't> {
+    fn pipe<U, F>(&'t self, f: F) -> Option<U>
+    where
+        F: FnOnce(&'t T) -> U;
+}
+
+impl<'t, T: 't> OptionExt<'t, T> for Option<T> {
+    #[inline]
+    fn pipe<U, F>(&'t self, f: F) -> Option<U>
+    where
+        F: FnOnce(&'t T) -> U,
+    {
+        match *self {
+            Some(ref x) => Some(f(x)),
+            None => None,
+        }
+    }
+}

crates/dagger-codegen/src/visitor.rs

@@ -0,0 +1,106 @@
+use std::sync::Arc;
+
+use dagger_core::introspection::{FullType, Schema, __TypeKind};
+use itertools::Itertools;
+
+pub struct Visitor {
+    pub schema: Schema,
+    pub handlers: VisitHandlers,
+}
+
+pub type VisitFunc = Arc<dyn Fn(&FullType) -> eyre::Result<()>>;
+
+pub struct VisitHandlers {
+    pub visit_scalar: VisitFunc,
+    pub visit_object: VisitFunc,
+    pub visit_input: VisitFunc,
+    pub visit_enum: VisitFunc,
+}
+
+struct SequenceItem {
+    kind: __TypeKind,
+    handler: VisitFunc,
+    ignore: Option<Vec<String>>,
+}
+
+impl Visitor {
+    pub fn run(&self) -> eyre::Result<()> {
+        let sequence = vec![
+            SequenceItem {
+                kind: __TypeKind::SCALAR,
+                handler: self.handlers.visit_scalar.clone(),
+                ignore: Some(vec![
+                    "String".into(),
+                    "Float".into(),
+                    "Int".into(),
+                    "Boolean".into(),
+                    "DateTime".into(),
+                    "ID".into(),
+                ]),
+            },
+            SequenceItem {
+                kind: __TypeKind::INPUT_OBJECT,
+                handler: self.handlers.visit_input.clone(),
+                ignore: None,
+            },
+            SequenceItem {
+                kind: __TypeKind::OBJECT,
+                handler: self.handlers.visit_object.clone(),
+                ignore: None,
+            },
+            SequenceItem {
+                kind: __TypeKind::ENUM,
+                handler: self.handlers.visit_enum.clone(),
+                ignore: None,
+            },
+        ];
+
+        for item in sequence {
+            self.visit(&item)?;
+        }
+
+        Ok(())
+    }
+
+    fn visit(&self, item: &SequenceItem) -> eyre::Result<()> {
+        self.schema
+            .types
+            .as_ref()
+            .unwrap()
+            .into_iter()
+            .map(|t| t.as_ref().unwrap())
+            .filter(|t| match t.full_type.kind.as_ref().unwrap() == &item.kind {
+                true => match (item.ignore.as_ref(), t.full_type.name.as_ref()) {
+                    (Some(ignore), Some(name)) => {
+                        if name.starts_with("__") {
+                            return false;
+                        }
+                        if ignore.contains(name) {
+                            return false;
+                        }
+
+                        return true;
+                    }
+                    (None, Some(name)) => {
+                        if name.starts_with("__") {
+                            return false;
+                        }
+                        return true;
+                    }
+                    _ => false,
+                },
+                false => false,
+            })
+            .sorted_by(|a, b| {
+                a.full_type
+                    .name
+                    .as_ref()
+                    .unwrap()
+                    .cmp(&b.full_type.name.as_ref().unwrap())
+            })
+            .map(|t| (*item.handler)(&t.full_type))
+            .collect::<eyre::Result<Vec<_>>>()?;
+
+        Ok(())
+    }
+}

crates/dagger-core/src/introspection.rs

@@ -161,6 +161,9 @@ pub struct FullTypeFields {
     pub type_: Option<FullTypeFieldsType>,
     pub is_deprecated: Option<bool>,
     pub deprecation_reason: Option<String>,
+
+    #[serde(skip)]
+    pub parent_type: Option<FullType>,
 }
 
 #[derive(Clone, Debug, Deserialize)]

crates/dagger-sdk/tests/mod.rs

@@ -1,20 +1,21 @@
 use dagger_sdk::client::connect;
+use dagger_sdk::gen::ContainerExecOpts;
 
 #[test]
 fn test_example_container() {
     let client = connect().unwrap();
 
-    let alpine = client.container(None, None).from("alpine:3.16.2".into());
+    let alpine = client.container(None).from("alpine:3.16.2".into());
 
     let out = alpine
-        .exec(
+        .exec(Some(ContainerExecOpts {
-            Some(vec!["cat".into(), "/etc/alpine-release".into()]),
+            args: Some(vec!["cat".into(), "/etc/alpine-release".into()]),
-            None,
+            stdin: None,
-            None,
+            redirect_stdout: None,
-            None,
+            redirect_stderr: None,
-            None,
+            experimental_privileged_nesting: None,
-        )
+        }))
         .stdout();
 
-    assert_eq!(out, Some("3.16.2\n".to_string()))
+    assert_eq!(out, "3.16.2\n".to_string())
 }

src/cli_generate.rs

@@ -1,7 +1,9 @@
 use std::io::Write;
+use std::sync::Arc;
 
 use clap::{Arg, ArgMatches};
-use dagger_codegen::codegen::CodeGeneration;
+use dagger_codegen::generate;
+use dagger_codegen::rust::RustGenerator;
 use dagger_core::config::Config;
 use dagger_core::engine::Engine;
 use dagger_core::session::Session;
@@ -21,7 +23,10 @@ impl GenerateCommand {
         let session = Session::new();
         let req = session.start(&cfg, &conn)?;
         let schema = session.schema(req)?;
-        let code = CodeGeneration::new().generate(&schema)?;
+        let code = generate(
+            schema.into_schema().schema.unwrap(),
+            Arc::new(RustGenerator {}),
+        )?;
 
         if let Some(output) = arg_matches.get_one::<String>("output") {
             let mut file = std::fs::File::create(output)?;