Merge pull request #1 from tomhoule/derive-from-json

Implement json introspected schema support

Author: tomhoule

.travis.yml

@@ -0,0 +1,10 @@
+language: rust
+rust:
+  - stable
+  - beta
+  - nightly
+cache: cargo
+script:
+  - cargo test --verbose
+  - cd graphql_query_derive && cargo test --verbose
+  - cd ../examples/github && cargo build

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
-name = "graphql_query"
-version = "0.1.0"
+name = "graphql_client"
+version = "0.0.1"
 authors = ["Tom Houlé <[email protected]>"]
 
 [dependencies]

README.md

@@ -13,7 +13,7 @@ struct MyQuery;
 fn perform_my_query(variables: &my_query::Variables) -> Result<(), failure::Error> {
     let body = MyQuery::expand(variables);
     let client = reqwest::Client::new();
-    let res: HttpResponse<graphql_query::Response<my_query::ResponseData>> = client.post("/graphql", body)?;
+    let res: HttpResponse<graphql_client::Response<my_query::ResponseData>> = client.post("/graphql", body)?;
     println!("{:#?}", res.body);
 }
 ```

examples/github/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["Tom Houlé <[email protected]>"]
 
 [dependencies]
 failure = "*"
-graphql_query = { path = "../.." }
+graphql_client = { path = "../.." }
 serde = "1.0"
 serde_derive = "1.0"
 serde_json = "1.0"

examples/github/src/main.rs

@@ -1,13 +1,13 @@
 extern crate failure;
 #[macro_use]
-extern crate graphql_query;
+extern crate graphql_client;
 extern crate reqwest;
 extern crate serde;
 extern crate serde_json;
 #[macro_use]
 extern crate serde_derive;
 
-use graphql_query::*;
+use graphql_client::*;
 
 #[derive(GraphQLQuery)]
 #[GraphQLQuery(schema_path = "src/schema.graphql", query_path = "src/query_1.graphql")]

graphql_query_derive/Cargo.toml

@@ -13,5 +13,6 @@ syn = "*"
 proc-macro2 = { version = "*", features = ["nightly"] }
 serde = "1.0"
 serde_derive = "1.0"
+serde_json = "1.0"
 heck = "*"
 graphql-parser = "*"

graphql_query_derive/src/field_type.rs

@@ -1,5 +1,6 @@
 use enums::ENUMS_PREFIX;
 use graphql_parser::schema;
+use introspection_response;
 use proc_macro2::{Ident, Span, TokenStream};
 use query::QueryContext;
 use schema::DEFAULT_SCALARS;
@@ -87,3 +88,34 @@ fn from_schema_type_inner(inner: schema::Type, non_null: bool) -> FieldType {
         FieldType::Optional(Box::new(inner_field_type))
     }
 }
+
+fn from_json_type_inner(inner: &introspection_response::TypeRef, non_null: bool) -> FieldType {
+    use introspection_response::*;
+    let inner = inner.clone();
+
+    let inner_field_type = match inner.kind {
+        Some(__TypeKind::NON_NULL) => {
+            from_json_type_inner(&inner.of_type.expect("inner type is missing"), true)
+        }
+        Some(__TypeKind::LIST) => {
+            FieldType::Vector(Box::new(from_json_type_inner(&inner.of_type.expect("inner type is missing"), false)))
+        }
+        Some(_) => FieldType::Named(Ident::new(
+            &inner.name.expect("type name"),
+            Span::call_site(),
+        )),
+        None => unreachable!("non-convertible type"),
+    };
+
+    if non_null {
+        inner_field_type
+    } else {
+        FieldType::Optional(Box::new(inner_field_type))
+    }
+}
+
+impl ::std::convert::From<introspection_response::FullTypeFieldsType> for FieldType {
+    fn from(schema_type: introspection_response::FullTypeFieldsType) -> FieldType {
+        from_json_type_inner(&schema_type.type_ref, false)
+    }
+}

graphql_query_derive/src/interfaces.rs

@@ -3,7 +3,7 @@ use objects::GqlObjectField;
 use proc_macro2::{Ident, Span, TokenStream};
 use query::QueryContext;
 
-#[derive(Debug)]
+#[derive(Debug, PartialEq)]
 pub struct GqlInterface {
     pub implemented_by: Vec<String>,
     pub name: String,
@@ -14,7 +14,7 @@ impl GqlInterface {
     pub fn response_for_selection(
         &self,
         _query_context: &QueryContext,
-        selection: &query::SelectionSet,
+        _selection: &query::SelectionSet,
         prefix: &str,
     ) -> TokenStream {
         let name = Ident::new(&prefix, Span::call_site());