Module clippy_lints::utils

Modules

author	A group of attributes that can be attached to Rust code in order to generate a clippy lint detecting said code automatically.
comparisons	Utility functions about comparison operators.
conf	Read configurations files.
constants	This module contains some useful constants.
higher	This module contains functions for retrieve the original AST from lowered hir.
inspector	checks for attributes
internal_lints
paths	This module contains paths to types and functions Clippy needs to know about.
ptr
sugg	Contains utility functions to generate suggestions.

Structs

DiagnosticWrapper
LimitStack
SpanlessEq	Type used to check whether two ast are the same. This is different from the operator == on ast types as this operator would compare true equality with ID and span.
SpanlessHash	Type used to hash an ast element. This is different from the Hash trait on ast types as this trait would consider IDs and spans.

Functions

camel_case_from	Return index of the last camel-case component of s.
camel_case_until	Return the index of the character after the first camel-case component of s.
clip	clip unused bytes
contains_name	check if an Expr contains a certain name
differing_macro_contexts	Returns true if the two spans come from differing expansions (i.e. one is from a macro and one isn't).
expr_block	Like snippet_block, but add braces if the expr is not an ExprBlock. Also takes an Option<String> which can be put inside the braces.
get_arg_name
get_enclosing_block
get_item_name	Get the name of the item the expression is in, if available.
get_parent_expr	Get a parent expressions if any – this is useful to constrain a lint.
get_pat_name	Get the name of a Pat, if any
get_trait_def_id	Convenience function to get the DefId of a trait by path.
has_drop	Check whether this type implements Drop.
implements_trait	Check whether a type implements a trait. See also get_trait_def_id.
in_constant
in_external_macro	Returns true if the macro that expanded the crate was outside of the current crate or was a compiler plugin.
in_macro	Returns true if this expn_info was expanded by any macro.
int_bits
is_adjusted
is_allowed	Returns true if the lint is allowed in the current context
is_automatically_derived	Checks for the #[automatically_derived] attribute all #[derive]d implementations have.
is_copy
is_direct_expn_of	Return the pre-expansion span if is this directly comes from an expansion of the macro name. The difference with is_expn_of is that in
is_expn_of	Return the pre-expansion span if is this comes from an expansion of the macro name. See also is_direct_expn_of.
is_integer_literal	Check whether the given expression is a constant literal of the given value.
is_range_expression	Returns true if expn_info was expanded by range expressions.
is_refutable	Return whether a pattern is refutable.
is_self
is_self_ty
is_try	Check if a given expression is a match expression expanded from ? operator or try macro.
iter_input_pats
last_line_of_span	Returns a new Span that covers the full last line of the given Span
last_path_segment
match_def_path	Check if a DefId's path matches the given absolute type path usage.
match_impl_method	Check if the method call given in expr belongs to given type.
match_path
match_path_ast	Match a Path against a slice of segment string literals, e.g.
match_qpath	Match a Path against a slice of segment string literals.
match_trait_method	Check if the method call given in expr belongs to given trait.
match_type	Check if type is struct, enum or union type with given def path.
match_var	Check if an expression references a variable of the given name.
method_chain_args	Match an Expr against a chain of methods, and return the matched Exprs.
multispan_sugg	Create a suggestion made from several span → replacement.
opt_def_id
path_to_def	Get the definition associated to a path.
remove_blocks	Remove blocks around an expression.
resolve_node	Resolve the definition of a node from its HirId.
return_ty	Convenience function to get the return type of a function
same_tys	Check if two types are the same.
sext	Turn a constant int byte representation into an i128
single_segment_path
snippet	Convert a span to a code snippet if available, otherwise use default.
snippet_block	Convert a span (from a block) to a code snippet if available, otherwise use default. This trims the code of indentation, except for the first line. Use it for blocks or block-like things which need to be printed as such.
snippet_opt	Convert a span to a code snippet. Returns None if not available.
span_help_and_lint
span_lint
span_lint_and_sugg	Add a span lint with a suggestion on how to fix it.
span_lint_and_then
span_note_and_lint
trim_multiline	Trim indentation from a multiline string with possibility of ignoring the first line.
type_is_unsafe_function	Return whether the given type is an unsafe function.
unsext	clip unused bytes
walk_ptrs_hir_ty	Return the base type for HIR references and pointers.
walk_ptrs_ty	Return the base type for references and raw pointers.
walk_ptrs_ty_depth	Return the base type for references and raw pointers, and count reference depth.
without_block_comments	Remove block comments from the given Vec of lines

Type Definitions

MethodArgs