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Add expr, pat, ty and macro_stmts

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This commit is contained in:
Edwin Cheng 2019-04-19 03:49:56 +08:00
parent 3ff5440a50
commit c0f19d7005
5 changed files with 156 additions and 15 deletions
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57
crates/ra_mbe/src/lib.rs
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@ -44,7 +44,11 @@ pub use crate::syntax_bridge::{
ast_to_token_tree,
token_tree_to_ast_item_list,
syntax_node_to_token_tree,
token_tree_to_expr,
token_tree_to_pat,
token_tree_to_ty,
token_tree_to_macro_items,
token_tree_to_macro_stmts,
};
/// This struct contains AST for a single `macro_rules` definition. What might
@ -450,6 +454,59 @@ MACRO_ITEMS@[0; 40)
assert_expansion(&rules, "foo! { foo, bar }", "fn foo () {let a = foo ; let b = bar ;}");
}
#[test]
fn test_tt_to_stmts() {
let rules = create_rules(
r#"
macro_rules! foo {
() => {
let a = 0;
a = 10 + 1;
a
}
}
"#,
);
let expanded = expand(&rules, "foo!{}");
let stmts = token_tree_to_macro_stmts(&expanded);
assert_eq!(
stmts.syntax().debug_dump().trim(),
r#"MACRO_STMTS@[0; 15)
LET_STMT@[0; 7)
LET_KW@[0; 3) "let"
BIND_PAT@[3; 4)
NAME@[3; 4)
IDENT@[3; 4) "a"
EQ@[4; 5) "="
LITERAL@[5; 6)
INT_NUMBER@[5; 6) "0"
SEMI@[6; 7) ";"
EXPR_STMT@[7; 14)
BIN_EXPR@[7; 13)
PATH_EXPR@[7; 8)
PATH@[7; 8)
PATH_SEGMENT@[7; 8)
NAME_REF@[7; 8)
IDENT@[7; 8) "a"
EQ@[8; 9) "="
BIN_EXPR@[9; 13)
LITERAL@[9; 11)
INT_NUMBER@[9; 11) "10"
PLUS@[11; 12) "+"
LITERAL@[12; 13)
INT_NUMBER@[12; 13) "1"
SEMI@[13; 14) ";"
EXPR_STMT@[14; 15)
PATH_EXPR@[14; 15)
PATH@[14; 15)
PATH_SEGMENT@[14; 15)
NAME_REF@[14; 15)
IDENT@[14; 15) "a""#,
);
}
// The following tests are port from intellij-rust directly
// https://github.com/intellij-rust/intellij-rust/blob/c4e9feee4ad46e7953b1948c112533360b6087bb/src/test/kotlin/org/rust/lang/core/macros/RsMacroExpansionTest.kt