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Merge #5403

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5403: Simplify r=matklad a=matklad



bors r+
🤖

Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
This commit is contained in:
bors[bot] 2020-07-16 09:39:25 +00:00 committed by GitHub
commit 2a14c43d5b
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3 changed files with 76 additions and 116 deletions
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76
crates/ra_ide/src/call_info.rs
View File

@ -7,7 +7,15 @@
};
use test_utils::mark;
use crate::{CallInfo, FilePosition, FunctionSignature};
use crate::{FilePosition, FunctionSignature};
/// Contains information about a call site. Specifically the
/// `FunctionSignature`and current parameter.
#[derive(Debug)]
pub struct CallInfo {
pub signature: FunctionSignature,
pub active_parameter: Option<usize>,
}
/// Computes parameter information for the given call expression.
pub(crate) fn call_info(db: &RootDatabase, position: FilePosition) -> Option<CallInfo> {
@ -40,43 +48,40 @@ fn call_info_for_token(sema: &Semantics<RootDatabase>, token: SyntaxToken) -> Op
// Find the calling expression and it's NameRef
let calling_node = FnCallNode::with_node(&token.parent())?;
let (mut call_info, has_self) = match &calling_node {
let signature = match &calling_node {
FnCallNode::CallExpr(call) => {
//FIXME: Type::as_callable is broken
let callable_def = sema.type_of_expr(&call.expr()?)?.as_callable()?;
match callable_def {
hir::CallableDef::FunctionId(it) => {
let fn_def = it.into();
(CallInfo::with_fn(sema.db, fn_def), fn_def.has_self_param(sema.db))
FunctionSignature::from_hir(sema.db, fn_def)
}
hir::CallableDef::StructId(it) => {
(CallInfo::with_struct(sema.db, it.into())?, false)
FunctionSignature::from_struct(sema.db, it.into())?
}
hir::CallableDef::EnumVariantId(it) => {
(CallInfo::with_enum_variant(sema.db, it.into())?, false)
FunctionSignature::from_enum_variant(sema.db, it.into())?
}
}
}
FnCallNode::MethodCallExpr(method_call) => {
let function = sema.resolve_method_call(&method_call)?;
(CallInfo::with_fn(sema.db, function), function.has_self_param(sema.db))
FunctionSignature::from_hir(sema.db, function)
}
FnCallNode::MacroCallExpr(macro_call) => {
let macro_def = sema.resolve_macro_call(&macro_call)?;
(CallInfo::with_macro(sema.db, macro_def)?, false)
FunctionSignature::from_macro(sema.db, macro_def)?
}
};
// If we have a calling expression let's find which argument we are on
let num_params = call_info.parameters().len();
let num_params = signature.parameters.len();
match num_params {
0 => (),
1 => {
if !has_self {
call_info.active_parameter = Some(0);
}
}
let active_parameter = match num_params {
0 => None,
1 if signature.has_self_param => None,
1 => Some(0),
_ => {
if let Some(arg_list) = calling_node.arg_list() {
// Number of arguments specified at the call site
@ -99,16 +104,18 @@ fn call_info_for_token(sema: &Semantics<RootDatabase>, token: SyntaxToken) -> Op
);
// If we are in a method account for `self`
if has_self {
if signature.has_self_param {
param += 1;
}
call_info.active_parameter = Some(param);
}
Some(param)
} else {
None
}
}
};
Some(call_info)
Some(CallInfo { signature, active_parameter })
}
#[derive(Debug)]
@ -181,34 +188,6 @@ fn into_active_parameter(self) -> Option<ActiveParameter> {
let res = ActiveParameter { ty, name };
Some(res)
}
fn with_fn(db: &RootDatabase, function: hir::Function) -> Self {
let signature = FunctionSignature::from_hir(db, function);
CallInfo { signature, active_parameter: None }
}
fn with_struct(db: &RootDatabase, st: hir::Struct) -> Option<Self> {
let signature = FunctionSignature::from_struct(db, st)?;
Some(CallInfo { signature, active_parameter: None })
}
fn with_enum_variant(db: &RootDatabase, variant: hir::EnumVariant) -> Option<Self> {
let signature = FunctionSignature::from_enum_variant(db, variant)?;
Some(CallInfo { signature, active_parameter: None })
}
fn with_macro(db: &RootDatabase, macro_def: hir::MacroDef) -> Option<Self> {
let signature = FunctionSignature::from_macro(db, macro_def)?;
Some(CallInfo { signature, active_parameter: None })
}
fn parameters(&self) -> &[String] {
&self.signature.parameters
}
}
#[cfg(test)]
@ -228,7 +207,8 @@ fn check(ra_fixture: &str, expect: Expect) {
Some(docs) => format!("{}\n------\n", docs.as_str()),
};
let params = call_info
.parameters()
.signature
.parameters
.iter()
.enumerate()
.map(|(i, param)| {

37
crates/ra_ide/src/display/function_signature.rs
View File

@ -61,15 +61,11 @@ pub struct FunctionQualifier {
}
impl FunctionSignature {
pub(crate) fn with_doc_opt(mut self, doc: Option<Documentation>) -> Self {
self.doc = doc;
self
}
pub(crate) fn from_hir(db: &RootDatabase, function: hir::Function) -> Self {
let doc = function.docs(db);
let ast_node = function.source(db).value;
FunctionSignature::from(&ast_node).with_doc_opt(doc)
let mut res = FunctionSignature::from(&ast_node);
res.doc = function.docs(db);
res
}
pub(crate) fn from_struct(db: &RootDatabase, st: hir::Struct) -> Option<Self> {
@ -93,8 +89,7 @@ pub(crate) fn from_struct(db: &RootDatabase, st: hir::Struct) -> Option<Self> {
params.push(raw_param);
}
Some(
FunctionSignature {
Some(FunctionSignature {
kind: CallableKind::StructConstructor,
visibility: node.visibility().map(|n| n.syntax().text().to_string()),
// Do we need `const`?
@ -106,11 +101,9 @@ pub(crate) fn from_struct(db: &RootDatabase, st: hir::Struct) -> Option<Self> {
parameter_types,
generic_parameters: generic_parameters(&node),
where_predicates: where_predicates(&node),
doc: None,
doc: st.docs(db),
has_self_param: false,
}
.with_doc_opt(st.docs(db)),
)
})
}
pub(crate) fn from_enum_variant(db: &RootDatabase, variant: hir::EnumVariant) -> Option<Self> {
@ -140,8 +133,7 @@ pub(crate) fn from_enum_variant(db: &RootDatabase, variant: hir::EnumVariant) ->
params.push(format!("{}: {}", name, ty.display(db)));
}
Some(
FunctionSignature {
Some(FunctionSignature {
kind: CallableKind::VariantConstructor,
visibility: None,
// Do we need `const`?
@ -153,11 +145,9 @@ pub(crate) fn from_enum_variant(db: &RootDatabase, variant: hir::EnumVariant) ->
parameter_types,
generic_parameters: vec![],
where_predicates: vec![],
doc: None,
doc: variant.docs(db),
has_self_param: false,
}
.with_doc_opt(variant.docs(db)),
)
})
}
pub(crate) fn from_macro(db: &RootDatabase, macro_def: hir::MacroDef) -> Option<Self> {
@ -165,8 +155,7 @@ pub(crate) fn from_macro(db: &RootDatabase, macro_def: hir::MacroDef) -> Option<
let params = vec![];
Some(
FunctionSignature {
Some(FunctionSignature {
kind: CallableKind::Macro,
visibility: None,
qualifier: Default::default(),
@ -177,11 +166,9 @@ pub(crate) fn from_macro(db: &RootDatabase, macro_def: hir::MacroDef) -> Option<
parameter_types: vec![],
generic_parameters: vec![],
where_predicates: vec![],
doc: None,
doc: macro_def.docs(db),
has_self_param: false,
}
.with_doc_opt(macro_def.docs(db)),
)
})
}
}

9
crates/ra_ide/src/lib.rs
View File

@ -60,6 +60,7 @@ macro_rules! eprintln {
pub use crate::{
call_hierarchy::CallItem,
call_info::CallInfo,
completion::{
CompletionConfig, CompletionItem, CompletionItemKind, CompletionScore, InsertTextFormat,
},
@ -131,14 +132,6 @@ pub fn new(range: TextRange, info: T) -> RangeInfo<T> {
}
}
/// Contains information about a call site. Specifically the
/// `FunctionSignature`and current parameter.
#[derive(Debug)]
pub struct CallInfo {
pub signature: FunctionSignature,
pub active_parameter: Option<usize>,
}
/// `AnalysisHost` stores the current state of the world.
#[derive(Debug)]
pub struct AnalysisHost {