use clippy_utils::diagnostics::span_lint_and_sugg;

use clippy_utils::higher::If;

use clippy_utils::is_from_proc_macro;

use clippy_utils::source::SpanRangeExt;

use rustc_errors::Applicability;

use rustc_hir::{ExprKind, Stmt, StmtKind};

use rustc_lint::{LateContext, LateLintPass, LintContext};

use rustc_session::declare_lint_pass;

declare_clippy_lint! {

/// ### What it does

/// Checks for empty `if` branches with no else branch.

///

/// ### Why is this bad?

/// It can be entirely omitted, and often the condition too.

///

/// ### Known issues

/// This will usually only suggest to remove the `if` statement, not the condition. Other lints

/// such as `no_effect` will take care of removing the condition if it's unnecessary.

///

/// ### Example

/// ```rust,ignore

/// if really_expensive_condition(&i) {}

/// if really_expensive_condition_with_side_effects(&mut i) {}

/// ```

/// Use instead:

/// ```rust,ignore

/// // <omitted>

/// really_expensive_condition_with_side_effects(&mut i);

/// ```

#[clippy::version = "1.72.0"]

pub NEEDLESS_IF,

complexity,

"checks for empty if branches"

}

declare_lint_pass!(NeedlessIf => [NEEDLESS_IF]);

impl LateLintPass<'_> for NeedlessIf {

}