1909: move ast builder to a separate file r=matklad a=matklad



Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
This commit is contained in:
bors[bot] 2019-09-25 11:35:50 +00:00 committed by GitHub
commit 8f92309dbc
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GPG key ID: 4AEE18F83AFDEB23
23 changed files with 291 additions and 283 deletions

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@ -4,10 +4,7 @@ use ra_syntax::{
SmolStr,
};
use crate::{
ast_editor::{AstBuilder, AstEditor},
Assist, AssistCtx, AssistId,
};
use crate::{ast_builder::AstBuilder, ast_editor::AstEditor, Assist, AssistCtx, AssistId};
#[derive(PartialEq)]
enum AddMissingImplMembersMode {

View file

@ -3,7 +3,7 @@ use std::iter;
use hir::{db::HirDatabase, Adt, HasSource};
use ra_syntax::ast::{self, AstNode, NameOwner};
use crate::{ast_editor::AstBuilder, Assist, AssistCtx, AssistId};
use crate::{ast_builder::AstBuilder, Assist, AssistCtx, AssistId};
pub(crate) fn fill_match_arms(mut ctx: AssistCtx<impl HirDatabase>) -> Option<Assist> {
let match_expr = ctx.node_at_offset::<ast::MatchExpr>()?;

View file

@ -6,7 +6,7 @@ use ra_syntax::{
TextRange,
};
use crate::{ast_editor::AstBuilder, Assist, AssistCtx, AssistId};
use crate::{ast_builder::AstBuilder, Assist, AssistCtx, AssistId};
pub(crate) fn move_bounds_to_where_clause(mut ctx: AssistCtx<impl HirDatabase>) -> Option<Assist> {
let type_param_list = ctx.node_at_offset::<ast::TypeParamList>()?;

View file

@ -0,0 +1,229 @@
use itertools::Itertools;
use hir::Name;
use ra_syntax::{ast, AstNode, SourceFile};
pub struct AstBuilder<N: AstNode> {
_phantom: std::marker::PhantomData<N>,
}
impl AstBuilder<ast::RecordField> {
pub fn from_name(name: &Name) -> ast::RecordField {
ast_node_from_file_text(&format!("fn f() {{ S {{ {}: (), }} }}", name))
}
fn from_text(text: &str) -> ast::RecordField {
ast_node_from_file_text(&format!("fn f() {{ S {{ {}, }} }}", text))
}
pub fn from_pieces(name: &ast::NameRef, expr: Option<&ast::Expr>) -> ast::RecordField {
match expr {
Some(expr) => Self::from_text(&format!("{}: {}", name.syntax(), expr.syntax())),
None => Self::from_text(&name.syntax().to_string()),
}
}
}
impl AstBuilder<ast::Block> {
fn from_text(text: &str) -> ast::Block {
ast_node_from_file_text(&format!("fn f() {}", text))
}
pub fn single_expr(e: &ast::Expr) -> ast::Block {
Self::from_text(&format!("{{ {} }}", e.syntax()))
}
}
impl AstBuilder<ast::Expr> {
fn from_text(text: &str) -> ast::Expr {
ast_node_from_file_text(&format!("const C: () = {};", text))
}
pub fn unit() -> ast::Expr {
Self::from_text("()")
}
pub fn unimplemented() -> ast::Expr {
Self::from_text("unimplemented!()")
}
}
impl AstBuilder<ast::NameRef> {
pub fn new(text: &str) -> ast::NameRef {
ast_node_from_file_text(&format!("fn f() {{ {}; }}", text))
}
}
impl AstBuilder<ast::Path> {
fn from_text(text: &str) -> ast::Path {
ast_node_from_file_text(text)
}
pub fn from_name(name: ast::Name) -> ast::Path {
let name = name.syntax().to_string();
Self::from_text(name.as_str())
}
pub fn from_pieces(enum_name: ast::Name, var_name: ast::Name) -> ast::Path {
Self::from_text(&format!("{}::{}", enum_name.syntax(), var_name.syntax()))
}
}
impl AstBuilder<ast::BindPat> {
fn from_text(text: &str) -> ast::BindPat {
ast_node_from_file_text(&format!("fn f({}: ())", text))
}
pub fn from_name(name: &ast::Name) -> ast::BindPat {
Self::from_text(name.text())
}
}
impl AstBuilder<ast::PlaceholderPat> {
fn from_text(text: &str) -> ast::PlaceholderPat {
ast_node_from_file_text(&format!("fn f({}: ())", text))
}
pub fn placeholder() -> ast::PlaceholderPat {
Self::from_text("_")
}
}
impl AstBuilder<ast::TupleStructPat> {
fn from_text(text: &str) -> ast::TupleStructPat {
ast_node_from_file_text(&format!("fn f({}: ())", text))
}
pub fn from_pieces(
path: &ast::Path,
pats: impl Iterator<Item = ast::Pat>,
) -> ast::TupleStructPat {
let pats_str = pats.map(|p| p.syntax().to_string()).collect::<Vec<_>>().join(", ");
Self::from_text(&format!("{}({})", path.syntax(), pats_str))
}
}
impl AstBuilder<ast::RecordPat> {
fn from_text(text: &str) -> ast::RecordPat {
ast_node_from_file_text(&format!("fn f({}: ())", text))
}
pub fn from_pieces(path: &ast::Path, pats: impl Iterator<Item = ast::Pat>) -> ast::RecordPat {
let pats_str = pats.map(|p| p.syntax().to_string()).collect::<Vec<_>>().join(", ");
Self::from_text(&format!("{}{{ {} }}", path.syntax(), pats_str))
}
}
impl AstBuilder<ast::PathPat> {
fn from_text(text: &str) -> ast::PathPat {
ast_node_from_file_text(&format!("fn f({}: ())", text))
}
pub fn from_path(path: &ast::Path) -> ast::PathPat {
let path_str = path.syntax().text().to_string();
Self::from_text(path_str.as_str())
}
}
impl AstBuilder<ast::MatchArm> {
fn from_text(text: &str) -> ast::MatchArm {
ast_node_from_file_text(&format!("fn f() {{ match () {{{}}} }}", text))
}
pub fn from_pieces(pats: impl Iterator<Item = ast::Pat>, expr: &ast::Expr) -> ast::MatchArm {
let pats_str = pats.map(|p| p.syntax().to_string()).join(" | ");
Self::from_text(&format!("{} => {}", pats_str, expr.syntax()))
}
}
impl AstBuilder<ast::MatchArmList> {
fn from_text(text: &str) -> ast::MatchArmList {
ast_node_from_file_text(&format!("fn f() {{ match () {{{}}} }}", text))
}
pub fn from_arms(arms: impl Iterator<Item = ast::MatchArm>) -> ast::MatchArmList {
let arms_str = arms.map(|arm| format!("\n {}", arm.syntax())).join(",");
Self::from_text(&format!("{},\n", arms_str))
}
}
impl AstBuilder<ast::WherePred> {
fn from_text(text: &str) -> ast::WherePred {
ast_node_from_file_text(&format!("fn f() where {} {{ }}", text))
}
pub fn from_pieces(
path: ast::Path,
bounds: impl Iterator<Item = ast::TypeBound>,
) -> ast::WherePred {
let bounds = bounds.map(|b| b.syntax().to_string()).collect::<Vec<_>>().join(" + ");
Self::from_text(&format!("{}: {}", path.syntax(), bounds))
}
}
impl AstBuilder<ast::WhereClause> {
fn from_text(text: &str) -> ast::WhereClause {
ast_node_from_file_text(&format!("fn f() where {} {{ }}", text))
}
pub fn from_predicates(preds: impl Iterator<Item = ast::WherePred>) -> ast::WhereClause {
let preds = preds.map(|p| p.syntax().to_string()).collect::<Vec<_>>().join(", ");
Self::from_text(preds.as_str())
}
}
fn ast_node_from_file_text<N: AstNode>(text: &str) -> N {
let parse = SourceFile::parse(text);
let res = parse.tree().syntax().descendants().find_map(N::cast).unwrap();
res
}
pub(crate) mod tokens {
use once_cell::sync::Lazy;
use ra_syntax::{AstNode, Parse, SourceFile, SyntaxKind::*, SyntaxToken, T};
static SOURCE_FILE: Lazy<Parse<SourceFile>> = Lazy::new(|| SourceFile::parse(",\n; ;"));
pub(crate) fn comma() -> SyntaxToken {
SOURCE_FILE
.tree()
.syntax()
.descendants_with_tokens()
.filter_map(|it| it.into_token())
.find(|it| it.kind() == T![,])
.unwrap()
}
pub(crate) fn single_space() -> SyntaxToken {
SOURCE_FILE
.tree()
.syntax()
.descendants_with_tokens()
.filter_map(|it| it.into_token())
.find(|it| it.kind() == WHITESPACE && it.text().as_str() == " ")
.unwrap()
}
#[allow(unused)]
pub(crate) fn single_newline() -> SyntaxToken {
SOURCE_FILE
.tree()
.syntax()
.descendants_with_tokens()
.filter_map(|it| it.into_token())
.find(|it| it.kind() == WHITESPACE && it.text().as_str() == "\n")
.unwrap()
}
pub(crate) struct WsBuilder(SourceFile);
impl WsBuilder {
pub(crate) fn new(text: &str) -> WsBuilder {
WsBuilder(SourceFile::parse(text).ok().unwrap())
}
pub(crate) fn ws(&self) -> SyntaxToken {
self.0.syntax().first_child_or_token().unwrap().into_token().unwrap()
}
}
}

View file

@ -1,18 +1,18 @@
use std::{iter, ops::RangeInclusive};
use arrayvec::ArrayVec;
use itertools::Itertools;
use hir::Name;
use ra_fmt::leading_indent;
use ra_syntax::{
algo::{insert_children, replace_children},
ast, AstNode, Direction, InsertPosition, SourceFile, SyntaxElement,
ast, AstNode, Direction, InsertPosition, SyntaxElement,
SyntaxKind::*,
T,
};
use ra_text_edit::TextEditBuilder;
use crate::ast_builder::tokens;
pub struct AstEditor<N: AstNode> {
original_ast: N,
ast: N,
@ -240,228 +240,3 @@ impl AstEditor<ast::FnDef> {
self.ast = self.replace_children(replace_range, to_insert.into_iter())
}
}
pub struct AstBuilder<N: AstNode> {
_phantom: std::marker::PhantomData<N>,
}
impl AstBuilder<ast::RecordField> {
pub fn from_name(name: &Name) -> ast::RecordField {
ast_node_from_file_text(&format!("fn f() {{ S {{ {}: (), }} }}", name))
}
fn from_text(text: &str) -> ast::RecordField {
ast_node_from_file_text(&format!("fn f() {{ S {{ {}, }} }}", text))
}
pub fn from_pieces(name: &ast::NameRef, expr: Option<&ast::Expr>) -> ast::RecordField {
match expr {
Some(expr) => Self::from_text(&format!("{}: {}", name.syntax(), expr.syntax())),
None => Self::from_text(&name.syntax().to_string()),
}
}
}
impl AstBuilder<ast::Block> {
fn from_text(text: &str) -> ast::Block {
ast_node_from_file_text(&format!("fn f() {}", text))
}
pub fn single_expr(e: &ast::Expr) -> ast::Block {
Self::from_text(&format!("{{ {} }}", e.syntax()))
}
}
impl AstBuilder<ast::Expr> {
fn from_text(text: &str) -> ast::Expr {
ast_node_from_file_text(&format!("const C: () = {};", text))
}
pub fn unit() -> ast::Expr {
Self::from_text("()")
}
pub fn unimplemented() -> ast::Expr {
Self::from_text("unimplemented!()")
}
}
impl AstBuilder<ast::NameRef> {
pub fn new(text: &str) -> ast::NameRef {
ast_node_from_file_text(&format!("fn f() {{ {}; }}", text))
}
}
impl AstBuilder<ast::Path> {
fn from_text(text: &str) -> ast::Path {
ast_node_from_file_text(text)
}
pub fn from_name(name: ast::Name) -> ast::Path {
let name = name.syntax().to_string();
Self::from_text(name.as_str())
}
pub fn from_pieces(enum_name: ast::Name, var_name: ast::Name) -> ast::Path {
Self::from_text(&format!("{}::{}", enum_name.syntax(), var_name.syntax()))
}
}
impl AstBuilder<ast::BindPat> {
fn from_text(text: &str) -> ast::BindPat {
ast_node_from_file_text(&format!("fn f({}: ())", text))
}
pub fn from_name(name: &ast::Name) -> ast::BindPat {
Self::from_text(name.text())
}
}
impl AstBuilder<ast::PlaceholderPat> {
fn from_text(text: &str) -> ast::PlaceholderPat {
ast_node_from_file_text(&format!("fn f({}: ())", text))
}
pub fn placeholder() -> ast::PlaceholderPat {
Self::from_text("_")
}
}
impl AstBuilder<ast::TupleStructPat> {
fn from_text(text: &str) -> ast::TupleStructPat {
ast_node_from_file_text(&format!("fn f({}: ())", text))
}
pub fn from_pieces(
path: &ast::Path,
pats: impl Iterator<Item = ast::Pat>,
) -> ast::TupleStructPat {
let pats_str = pats.map(|p| p.syntax().to_string()).collect::<Vec<_>>().join(", ");
Self::from_text(&format!("{}({})", path.syntax(), pats_str))
}
}
impl AstBuilder<ast::RecordPat> {
fn from_text(text: &str) -> ast::RecordPat {
ast_node_from_file_text(&format!("fn f({}: ())", text))
}
pub fn from_pieces(path: &ast::Path, pats: impl Iterator<Item = ast::Pat>) -> ast::RecordPat {
let pats_str = pats.map(|p| p.syntax().to_string()).collect::<Vec<_>>().join(", ");
Self::from_text(&format!("{}{{ {} }}", path.syntax(), pats_str))
}
}
impl AstBuilder<ast::PathPat> {
fn from_text(text: &str) -> ast::PathPat {
ast_node_from_file_text(&format!("fn f({}: ())", text))
}
pub fn from_path(path: &ast::Path) -> ast::PathPat {
let path_str = path.syntax().text().to_string();
Self::from_text(path_str.as_str())
}
}
impl AstBuilder<ast::MatchArm> {
fn from_text(text: &str) -> ast::MatchArm {
ast_node_from_file_text(&format!("fn f() {{ match () {{{}}} }}", text))
}
pub fn from_pieces(pats: impl Iterator<Item = ast::Pat>, expr: &ast::Expr) -> ast::MatchArm {
let pats_str = pats.map(|p| p.syntax().to_string()).join(" | ");
Self::from_text(&format!("{} => {}", pats_str, expr.syntax()))
}
}
impl AstBuilder<ast::MatchArmList> {
fn from_text(text: &str) -> ast::MatchArmList {
ast_node_from_file_text(&format!("fn f() {{ match () {{{}}} }}", text))
}
pub fn from_arms(arms: impl Iterator<Item = ast::MatchArm>) -> ast::MatchArmList {
let arms_str = arms.map(|arm| format!("\n {}", arm.syntax())).join(",");
Self::from_text(&format!("{},\n", arms_str))
}
}
impl AstBuilder<ast::WherePred> {
fn from_text(text: &str) -> ast::WherePred {
ast_node_from_file_text(&format!("fn f() where {} {{ }}", text))
}
pub fn from_pieces(
path: ast::Path,
bounds: impl Iterator<Item = ast::TypeBound>,
) -> ast::WherePred {
let bounds = bounds.map(|b| b.syntax().to_string()).collect::<Vec<_>>().join(" + ");
Self::from_text(&format!("{}: {}", path.syntax(), bounds))
}
}
impl AstBuilder<ast::WhereClause> {
fn from_text(text: &str) -> ast::WhereClause {
ast_node_from_file_text(&format!("fn f() where {} {{ }}", text))
}
pub fn from_predicates(preds: impl Iterator<Item = ast::WherePred>) -> ast::WhereClause {
let preds = preds.map(|p| p.syntax().to_string()).collect::<Vec<_>>().join(", ");
Self::from_text(preds.as_str())
}
}
fn ast_node_from_file_text<N: AstNode>(text: &str) -> N {
let parse = SourceFile::parse(text);
let res = parse.tree().syntax().descendants().find_map(N::cast).unwrap();
res
}
mod tokens {
use once_cell::sync::Lazy;
use ra_syntax::{AstNode, Parse, SourceFile, SyntaxKind::*, SyntaxToken, T};
static SOURCE_FILE: Lazy<Parse<SourceFile>> = Lazy::new(|| SourceFile::parse(",\n; ;"));
pub(crate) fn comma() -> SyntaxToken {
SOURCE_FILE
.tree()
.syntax()
.descendants_with_tokens()
.filter_map(|it| it.into_token())
.find(|it| it.kind() == T![,])
.unwrap()
}
pub(crate) fn single_space() -> SyntaxToken {
SOURCE_FILE
.tree()
.syntax()
.descendants_with_tokens()
.filter_map(|it| it.into_token())
.find(|it| it.kind() == WHITESPACE && it.text().as_str() == " ")
.unwrap()
}
#[allow(unused)]
pub(crate) fn single_newline() -> SyntaxToken {
SOURCE_FILE
.tree()
.syntax()
.descendants_with_tokens()
.filter_map(|it| it.into_token())
.find(|it| it.kind() == WHITESPACE && it.text().as_str() == "\n")
.unwrap()
}
pub(crate) struct WsBuilder(SourceFile);
impl WsBuilder {
pub(crate) fn new(text: &str) -> WsBuilder {
WsBuilder(SourceFile::parse(text).ok().unwrap())
}
pub(crate) fn ws(&self) -> SyntaxToken {
self.0.syntax().first_child_or_token().unwrap().into_token().unwrap()
}
}
}

View file

@ -8,6 +8,7 @@
mod assist_ctx;
mod marks;
pub mod ast_editor;
pub mod ast_builder;
use itertools::Itertools;
@ -17,6 +18,7 @@ use ra_syntax::{TextRange, TextUnit};
use ra_text_edit::TextEdit;
pub(crate) use crate::assist_ctx::{Assist, AssistCtx};
pub use crate::assists::auto_import::auto_import_text_edit;
/// Unique identifier of the assist, should not be shown to the user
/// directly.
@ -46,7 +48,7 @@ where
H: HirDatabase + 'static,
{
AssistCtx::with_ctx(db, range, false, |ctx| {
all_assists()
assists::all()
.iter()
.filter_map(|f| f(ctx.clone()))
.map(|a| match a {
@ -68,7 +70,7 @@ where
use std::cmp::Ordering;
AssistCtx::with_ctx(db, range, true, |ctx| {
let mut a = all_assists()
let mut a = assists::all()
.iter()
.filter_map(|f| f(ctx.clone()))
.map(|a| match a {
@ -86,51 +88,56 @@ where
})
}
mod add_derive;
mod add_explicit_type;
mod add_impl;
mod flip_comma;
mod flip_binexpr;
mod change_visibility;
mod fill_match_arms;
mod merge_match_arms;
mod introduce_variable;
mod inline_local_variable;
mod raw_string;
mod replace_if_let_with_match;
mod split_import;
mod remove_dbg;
pub mod auto_import;
mod add_missing_impl_members;
mod move_guard;
mod move_bounds;
mod assists {
use crate::{Assist, AssistCtx};
use hir::db::HirDatabase;
fn all_assists<DB: HirDatabase>() -> &'static [fn(AssistCtx<DB>) -> Option<Assist>] {
&[
add_derive::add_derive,
add_explicit_type::add_explicit_type,
add_impl::add_impl,
change_visibility::change_visibility,
fill_match_arms::fill_match_arms,
merge_match_arms::merge_match_arms,
flip_comma::flip_comma,
flip_binexpr::flip_binexpr,
introduce_variable::introduce_variable,
replace_if_let_with_match::replace_if_let_with_match,
split_import::split_import,
remove_dbg::remove_dbg,
auto_import::auto_import,
add_missing_impl_members::add_missing_impl_members,
add_missing_impl_members::add_missing_default_members,
inline_local_variable::inline_local_varialbe,
move_guard::move_guard_to_arm_body,
move_guard::move_arm_cond_to_match_guard,
move_bounds::move_bounds_to_where_clause,
raw_string::add_hash,
raw_string::make_raw_string,
raw_string::make_usual_string,
raw_string::remove_hash,
]
mod add_derive;
mod add_explicit_type;
mod add_impl;
mod flip_comma;
mod flip_binexpr;
mod change_visibility;
mod fill_match_arms;
mod merge_match_arms;
mod introduce_variable;
mod inline_local_variable;
mod raw_string;
mod replace_if_let_with_match;
mod split_import;
mod remove_dbg;
pub(crate) mod auto_import;
mod add_missing_impl_members;
mod move_guard;
mod move_bounds;
pub(crate) fn all<DB: HirDatabase>() -> &'static [fn(AssistCtx<DB>) -> Option<Assist>] {
&[
add_derive::add_derive,
add_explicit_type::add_explicit_type,
add_impl::add_impl,
change_visibility::change_visibility,
fill_match_arms::fill_match_arms,
merge_match_arms::merge_match_arms,
flip_comma::flip_comma,
flip_binexpr::flip_binexpr,
introduce_variable::introduce_variable,
replace_if_let_with_match::replace_if_let_with_match,
split_import::split_import,
remove_dbg::remove_dbg,
auto_import::auto_import,
add_missing_impl_members::add_missing_impl_members,
add_missing_impl_members::add_missing_default_members,
inline_local_variable::inline_local_varialbe,
move_guard::move_guard_to_arm_body,
move_guard::move_arm_cond_to_match_guard,
move_bounds::move_bounds_to_where_clause,
raw_string::add_hash,
raw_string::make_raw_string,
raw_string::make_usual_string,
raw_string::remove_hash,
]
}
}
#[cfg(test)]

View file

@ -1,4 +1,4 @@
use ra_assists::auto_import;
use ra_assists::auto_import_text_edit;
use ra_syntax::{ast, AstNode, SmolStr};
use ra_text_edit::TextEditBuilder;
use rustc_hash::FxHashMap;
@ -23,7 +23,7 @@ pub(super) fn complete_scope(acc: &mut Completions, ctx: &CompletionContext) {
let edit = {
let mut builder = TextEditBuilder::default();
builder.replace(ctx.source_range(), name.to_string());
auto_import::auto_import_text_edit(
auto_import_text_edit(
&ctx.token.parent(),
&ctx.token.parent(),
&path,

View file

@ -2,7 +2,7 @@ use std::cell::RefCell;
use hir::diagnostics::{AstDiagnostic, Diagnostic as _, DiagnosticSink};
use itertools::Itertools;
use ra_assists::ast_editor::{AstBuilder, AstEditor};
use ra_assists::{ast_builder::AstBuilder, ast_editor::AstEditor};
use ra_db::SourceDatabase;
use ra_prof::profile;
use ra_syntax::{