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use super::*;
use crate::ty;
pub(crate) struct BuildErrors<'a> {
pub(crate) errors: &'a mut DiagnosticList,
pub(crate) path: SelectionPath,
}
pub(crate) fn document_from_ast(
schema: Option<&Schema>,
document: &ast::Document,
errors: &mut DiagnosticList,
type_system_definitions_are_errors: bool,
) -> ExecutableDocument {
let mut operations = OperationMap::default();
let mut multiple_anonymous = false;
let mut fragments = IndexMap::with_hasher(Default::default());
let mut errors = BuildErrors {
errors,
path: SelectionPath {
nested_fields: Vec::new(),
// overwritten:
root: ExecutableDefinitionName::AnonymousOperation(ast::OperationType::Query),
},
};
for definition in &document.definitions {
debug_assert!(errors.path.nested_fields.is_empty());
match definition {
ast::Definition::OperationDefinition(operation) => {
if let Some(name) = &operation.name {
if let Some(anonymous) = &operations.anonymous {
errors.errors.push(
anonymous.location(),
BuildError::AmbiguousAnonymousOperation,
)
}
if let Entry::Vacant(entry) = operations.named.entry(name.clone()) {
errors.path.root = ExecutableDefinitionName::NamedOperation(
operation.operation_type,
name.clone(),
);
if let Some(op) = Operation::from_ast(schema, &mut errors, operation) {
entry.insert(operation.same_location(op));
} else {
errors.errors.push(
operation.location(),
BuildError::UndefinedRootOperation {
operation_type: operation.operation_type.name(),
},
)
}
} else {
let (key, _) = operations.named.get_key_value(name).unwrap();
errors.errors.push(
name.location(),
BuildError::OperationNameCollision {
name_at_previous_location: key.clone(),
},
);
}
} else if let Some(previous) = &operations.anonymous {
if !multiple_anonymous {
multiple_anonymous = true;
errors
.errors
.push(previous.location(), BuildError::AmbiguousAnonymousOperation)
}
errors.errors.push(
operation.location(),
BuildError::AmbiguousAnonymousOperation,
)
} else if !operations.named.is_empty() {
errors.errors.push(
operation.location(),
BuildError::AmbiguousAnonymousOperation,
)
} else {
errors.path.root =
ExecutableDefinitionName::AnonymousOperation(operation.operation_type);
if let Some(op) = Operation::from_ast(schema, &mut errors, operation) {
operations.anonymous = Some(operation.same_location(op));
} else {
errors.errors.push(
operation.location(),
BuildError::UndefinedRootOperation {
operation_type: operation.operation_type.name(),
},
)
}
}
}
ast::Definition::FragmentDefinition(fragment) => {
if let Entry::Vacant(entry) = fragments.entry(fragment.name.clone()) {
errors.path.root = ExecutableDefinitionName::Fragment(fragment.name.clone());
if let Some(node) = Fragment::from_ast(schema, &mut errors, fragment) {
entry.insert(fragment.same_location(node));
}
} else {
let (key, _) = fragments.get_key_value(&fragment.name).unwrap();
errors.errors.push(
fragment.name.location(),
BuildError::FragmentNameCollision {
name_at_previous_location: key.clone(),
},
)
}
}
_ => {
if type_system_definitions_are_errors {
errors.errors.push(
definition.location(),
BuildError::TypeSystemDefinition {
name: definition.name().cloned(),
describe: definition.describe(),
},
)
}
}
}
}
ExecutableDocument {
sources: document.sources.clone(),
operations,
fragments,
}
}
impl Operation {
fn from_ast(
schema: Option<&Schema>,
errors: &mut BuildErrors,
ast: &ast::OperationDefinition,
) -> Option<Self> {
let ty = if let Some(s) = schema {
s.root_operation(ast.operation_type)?.clone()
} else {
// Hack for validate_standalone_excutable
ast.operation_type.default_type_name().clone()
};
let mut selection_set = SelectionSet::new(ty);
selection_set.extend_from_ast(schema, errors, &ast.selection_set);
Some(Self {
operation_type: ast.operation_type,
name: ast.name.clone(),
variables: ast.variables.clone(),
directives: ast.directives.clone(),
selection_set,
})
}
}
impl Fragment {
fn from_ast(
schema: Option<&Schema>,
errors: &mut BuildErrors,
ast: &ast::FragmentDefinition,
) -> Option<Self> {
if let Some(schema) = schema {
if !schema.types.contains_key(&ast.type_condition) {
errors.errors.push(
ast.type_condition.location(),
BuildError::UndefinedTypeInNamedFragmentTypeCondition {
type_name: ast.type_condition.clone(),
fragment_name: ast.name.clone(),
},
);
return None;
}
}
let mut selection_set = SelectionSet::new(ast.type_condition.clone());
selection_set.extend_from_ast(schema, errors, &ast.selection_set);
Some(Self {
name: ast.name.clone(),
directives: ast.directives.clone(),
selection_set,
})
}
}
impl SelectionSet {
pub(crate) fn extend_from_ast(
&mut self,
schema: Option<&Schema>,
errors: &mut BuildErrors,
ast_selections: &[ast::Selection],
) {
for selection in ast_selections {
match selection {
ast::Selection::Field(ast) => {
let field_def_result = if let Some(s) = schema {
s.type_field(&self.ty, &ast.name).map(|c| c.node.clone())
} else {
Ok(Node::new(ast::FieldDefinition {
description: None,
name: ast.name.clone(),
arguments: Vec::new(),
ty: ty!(UNKNOWN),
directives: Default::default(),
}))
};
errors
.path
.nested_fields
.push(ast.alias.clone().unwrap_or_else(|| ast.name.clone()));
match field_def_result {
Ok(field_def) => {
let leaf = ast.selection_set.is_empty();
let type_name = field_def.ty.inner_named_type();
match schema
.as_ref()
.and_then(|schema| schema.types.get(type_name))
{
Some(schema::ExtendedType::Scalar(_)) if !leaf => {
errors.errors.push(
ast.location(),
BuildError::SubselectionOnScalarType {
type_name: type_name.clone(),
path: errors.path.clone(),
},
)
}
Some(schema::ExtendedType::Enum(_)) if !leaf => errors.errors.push(
ast.location(),
BuildError::SubselectionOnEnumType {
type_name: type_name.clone(),
path: errors.path.clone(),
},
),
_ => self.push(
ast.same_location(
Field::new(ast.name.clone(), field_def)
.with_opt_alias(ast.alias.clone())
.with_arguments(ast.arguments.iter().cloned())
.with_directives(ast.directives.iter().cloned())
.with_ast_selections(
schema,
errors,
&ast.selection_set,
),
),
),
}
}
Err(schema::FieldLookupError::NoSuchField(type_name, _)) => {
errors.errors.push(
ast.name.location(),
BuildError::UndefinedField {
type_name: type_name.clone(),
field_name: ast.name.clone(),
path: errors.path.clone(),
},
)
}
Err(schema::FieldLookupError::NoSuchType) => {
// `self.ty` is the name of a type not definied in the schema.
// It can come from:
// * A root operation type, or a field definition:
// the schema is invalid, no need to record another error here.
// * An inline fragment with a type condition:
// we emitted `UndefinedTypeInInlineFragmentTypeCondition` already
// * The type condition of a named fragment definition:
// we emitted `UndefinedTypeInNamedFragmentTypeCondition` already
}
}
errors.path.nested_fields.pop();
}
ast::Selection::FragmentSpread(ast) => self.push(
ast.same_location(
self.new_fragment_spread(ast.fragment_name.clone())
.with_directives(ast.directives.iter().cloned()),
),
),
ast::Selection::InlineFragment(ast) => {
let opt_type_condition = ast.type_condition.clone();
match (&opt_type_condition, schema) {
(Some(type_condition), Some(schema))
if !schema.types.contains_key(type_condition) =>
{
errors.errors.push(
type_condition.location(),
BuildError::UndefinedTypeInInlineFragmentTypeCondition {
type_name: type_condition.clone(),
path: errors.path.clone(),
},
)
}
_ => self.push(
ast.same_location(
self.new_inline_fragment(opt_type_condition)
.with_directives(ast.directives.iter().cloned())
.with_ast_selections(schema, errors, &ast.selection_set),
),
),
}
}
}
}
}
}
impl Field {
fn with_ast_selections(
mut self,
schema: Option<&Schema>,
errors: &mut BuildErrors,
ast_selections: &[ast::Selection],
) -> Self {
self.selection_set
.extend_from_ast(schema, errors, ast_selections);
self
}
}
impl InlineFragment {
fn with_ast_selections(
mut self,
schema: Option<&Schema>,
errors: &mut BuildErrors,
ast_selections: &[ast::Selection],
) -> Self {
self.selection_set
.extend_from_ast(schema, errors, ast_selections);
self
}
}