Module node_ext

Various helper functions to work with SyntaxNodes.

Functions

block_as_lone_tail

eq_label_lt

expr_as_name_ref

for_each_break_and_continue_expr

for_each_tail_expr

Calls cb on each expression inside expr that is at “tail position”. Does not walk into break or return expressions. Note that modifying the tree while iterating it will cause undefined iteration which might potentially results in an out of bounds panic.

full_path_of_name_ref

is_closure_or_blk_with_modif

is_pattern_cond

macro_call_for_string_token

parse_tt_as_comma_sep_paths

Parses the input token tree as comma separated plain paths.

preorder_expr

Preorder walk all the expression’s child expressions preserving events. If the callback returns true on an [WalkEvent::Enter], the subtree of the expression will be skipped. Note that the subtree may already be skipped due to the context analysis this function does.

preorder_expr_with_ctx_checker

single_let

Returns the let only if there is exactly one (that is, let pat = expr or ((let pat = expr)), but not let pat = expr && expr or non_let_expr).

vis_eq

walk_expr

Preorder walk all the expression’s child expressions.

walk_pat

Preorder walk all the pattern’s sub patterns.

walk_patterns_in_expr

Preorder walk all the expression’s child patterns.

walk_ty

Preorder walk all the type’s sub types.