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fix assists

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This commit is contained in:
Aleksey Kladov 2019-09-02 21:41:50 +03:00
parent 5e3f291195
commit e94587e315
5 changed files with 92 additions and 61 deletions
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2
crates/ra_assists/src/ast_editor.rs
View File

@ -274,7 +274,7 @@ impl AstBuilder<ast::Block> {
impl AstBuilder<ast::Expr> {
fn from_text(text: &str) -> ast::Expr {
ast_node_from_file_text(&format!("fn f() {{ {}; }}", text))
ast_node_from_file_text(&format!("const C: () = {};", text))
}
pub fn unit() -> ast::Expr {

9
crates/ra_assists/src/introduce_variable.rs
View File

@ -3,7 +3,8 @@ use hir::db::HirDatabase;
use ra_syntax::{
ast::{self, AstNode},
SyntaxKind::{
BREAK_EXPR, COMMENT, LAMBDA_EXPR, LOOP_EXPR, MATCH_ARM, PATH_EXPR, RETURN_EXPR, WHITESPACE,
BLOCK_EXPR, BREAK_EXPR, COMMENT, LAMBDA_EXPR, LOOP_EXPR, MATCH_ARM, PATH_EXPR, RETURN_EXPR,
WHITESPACE,
},
SyntaxNode, TextUnit,
};
@ -80,10 +81,12 @@ pub(crate) fn introduce_variable(mut ctx: AssistCtx<impl HirDatabase>) -> Option
/// In general that's true for any expression, but in some cases that would produce invalid code.
fn valid_target_expr(node: SyntaxNode) -> Option<ast::Expr> {
match node.kind() {
PATH_EXPR => None,
PATH_EXPR | LOOP_EXPR => None,
BREAK_EXPR => ast::BreakExpr::cast(node).and_then(|e| e.expr()),
RETURN_EXPR => ast::ReturnExpr::cast(node).and_then(|e| e.expr()),
LOOP_EXPR => ast::ReturnExpr::cast(node).and_then(|e| e.expr()),
BLOCK_EXPR => {
ast::BlockExpr::cast(node).filter(|it| it.is_standalone()).map(ast::Expr::from)
}
_ => ast::Expr::cast(node),
}
}

91
crates/ra_ide_api/src/syntax_tree.rs
View File

@ -116,9 +116,10 @@ SOURCE_FILE@[0; 11)
L_PAREN@[6; 7) "("
R_PAREN@[7; 8) ")"
WHITESPACE@[8; 9) " "
BLOCK@[9; 11)
L_CURLY@[9; 10) "{"
R_CURLY@[10; 11) "}"
BLOCK_EXPR@[9; 11)
BLOCK@[9; 11)
L_CURLY@[9; 10) "{"
R_CURLY@[10; 11) "}"
"#
.trim()
);
@ -148,26 +149,27 @@ SOURCE_FILE@[0; 60)
L_PAREN@[7; 8) "("
R_PAREN@[8; 9) ")"
WHITESPACE@[9; 10) " "
BLOCK@[10; 60)
L_CURLY@[10; 11) "{"
WHITESPACE@[11; 16) "\n "
EXPR_STMT@[16; 58)
MACRO_CALL@[16; 57)
PATH@[16; 22)
PATH_SEGMENT@[16; 22)
NAME_REF@[16; 22)
IDENT@[16; 22) "assert"
EXCL@[22; 23) "!"
TOKEN_TREE@[23; 57)
L_PAREN@[23; 24) "("
STRING@[24; 52) "\"\n fn foo() {\n ..."
COMMA@[52; 53) ","
WHITESPACE@[53; 54) " "
STRING@[54; 56) "\"\""
R_PAREN@[56; 57) ")"
SEMI@[57; 58) ";"
WHITESPACE@[58; 59) "\n"
R_CURLY@[59; 60) "}"
BLOCK_EXPR@[10; 60)
BLOCK@[10; 60)
L_CURLY@[10; 11) "{"
WHITESPACE@[11; 16) "\n "
EXPR_STMT@[16; 58)
MACRO_CALL@[16; 57)
PATH@[16; 22)
PATH_SEGMENT@[16; 22)
NAME_REF@[16; 22)
IDENT@[16; 22) "assert"
EXCL@[22; 23) "!"
TOKEN_TREE@[23; 57)
L_PAREN@[23; 24) "("
STRING@[24; 52) "\"\n fn foo() {\n ..."
COMMA@[52; 53) ","
WHITESPACE@[53; 54) " "
STRING@[54; 56) "\"\""
R_PAREN@[56; 57) ")"
SEMI@[57; 58) ";"
WHITESPACE@[58; 59) "\n"
R_CURLY@[59; 60) "}"
"#
.trim()
);
@ -190,9 +192,10 @@ FN_DEF@[0; 11)
L_PAREN@[6; 7) "("
R_PAREN@[7; 8) ")"
WHITESPACE@[8; 9) " "
BLOCK@[9; 11)
L_CURLY@[9; 10) "{"
R_CURLY@[10; 11) "}"
BLOCK_EXPR@[9; 11)
BLOCK@[9; 11)
L_CURLY@[9; 10) "{"
R_CURLY@[10; 11) "}"
"#
.trim()
);
@ -258,10 +261,11 @@ SOURCE_FILE@[0; 12)
L_PAREN@[6; 7) "("
R_PAREN@[7; 8) ")"
WHITESPACE@[8; 9) " "
BLOCK@[9; 12)
L_CURLY@[9; 10) "{"
WHITESPACE@[10; 11) "\n"
R_CURLY@[11; 12) "}"
BLOCK_EXPR@[9; 12)
BLOCK@[9; 12)
L_CURLY@[9; 10) "{"
WHITESPACE@[10; 11) "\n"
R_CURLY@[11; 12) "}"
"#
.trim()
);
@ -292,10 +296,11 @@ SOURCE_FILE@[0; 12)
L_PAREN@[6; 7) "("
R_PAREN@[7; 8) ")"
WHITESPACE@[8; 9) " "
BLOCK@[9; 12)
L_CURLY@[9; 10) "{"
WHITESPACE@[10; 11) "\n"
R_CURLY@[11; 12) "}"
BLOCK_EXPR@[9; 12)
BLOCK@[9; 12)
L_CURLY@[9; 10) "{"
WHITESPACE@[10; 11) "\n"
R_CURLY@[11; 12) "}"
"#
.trim()
);
@ -325,10 +330,11 @@ SOURCE_FILE@[0; 25)
L_PAREN@[6; 7) "("
R_PAREN@[7; 8) ")"
WHITESPACE@[8; 9) " "
BLOCK@[9; 12)
L_CURLY@[9; 10) "{"
WHITESPACE@[10; 11) "\n"
R_CURLY@[11; 12) "}"
BLOCK_EXPR@[9; 12)
BLOCK@[9; 12)
L_CURLY@[9; 10) "{"
WHITESPACE@[10; 11) "\n"
R_CURLY@[11; 12) "}"
WHITESPACE@[12; 13) "\n"
FN_DEF@[13; 25)
FN_KW@[13; 15) "fn"
@ -339,10 +345,11 @@ SOURCE_FILE@[0; 25)
L_PAREN@[19; 20) "("
R_PAREN@[20; 21) ")"
WHITESPACE@[21; 22) " "
BLOCK@[22; 25)
L_CURLY@[22; 23) "{"
WHITESPACE@[23; 24) "\n"
R_CURLY@[24; 25) "}"
BLOCK_EXPR@[22; 25)
BLOCK@[22; 25)
L_CURLY@[22; 23) "{"
WHITESPACE@[23; 24) "\n"
R_CURLY@[24; 25) "}"
"#
.trim()
);

31
crates/ra_mbe/src/tests.rs
View File

@ -678,21 +678,22 @@ fn test_expr_order() {
PARAM_LIST@[5; 7)
L_PAREN@[5; 6) "("
R_PAREN@[6; 7) ")"
BLOCK@[7; 15)
L_CURLY@[7; 8) "{"
EXPR_STMT@[8; 14)
BIN_EXPR@[8; 13)
BIN_EXPR@[8; 11)
LITERAL@[8; 9)
INT_NUMBER@[8; 9) "1"
PLUS@[9; 10) "+"
LITERAL@[10; 11)
INT_NUMBER@[10; 11) "1"
STAR@[11; 12) "*"
LITERAL@[12; 13)
INT_NUMBER@[12; 13) "2"
SEMI@[13; 14) ";"
R_CURLY@[14; 15) "}""#,
BLOCK_EXPR@[7; 15)
BLOCK@[7; 15)
L_CURLY@[7; 8) "{"
EXPR_STMT@[8; 14)
BIN_EXPR@[8; 13)
BIN_EXPR@[8; 11)
LITERAL@[8; 9)
INT_NUMBER@[8; 9) "1"
PLUS@[9; 10) "+"
LITERAL@[10; 11)
INT_NUMBER@[10; 11) "1"
STAR@[11; 12) "*"
LITERAL@[12; 13)
INT_NUMBER@[12; 13) "2"
SEMI@[13; 14) ";"
R_CURLY@[14; 15) "}""#,
);
}

20
crates/ra_syntax/src/ast/expr_extensions.rs
View File

@ -289,6 +289,26 @@ impl ast::Literal {
}
}
impl ast::BlockExpr {
/// false if the block is an intrinsic part of the syntax and can't be
/// replaced with arbitrary expression.
///
/// ```not_rust
/// fn foo() { not_stand_alone }
/// const FOO: () = { stand_alone };
/// ```
pub fn is_standalone(&self) -> bool {
let kind = match self.syntax().parent() {
None => return true,
Some(it) => it.kind(),
};
match kind {
FN_DEF | MATCH_ARM | IF_EXPR | WHILE_EXPR | LOOP_EXPR | TRY_BLOCK_EXPR => false,
_ => true,
}
}
}
#[test]
fn test_literal_with_attr() {
let parse = ast::SourceFile::parse(r#"const _: &str = { #[attr] "Hello" };"#);