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Split high-cyclomatic-complexity function into two

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This commit is contained in:
Oliver Schneider 2017-05-09 17:15:28 +02:00
parent a67774530f
commit f48281b632
1 changed files with 77 additions and 73 deletions
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150
clippy_lints/src/misc_early.rs
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@ -4,7 +4,7 @@ use std::char;
use syntax::ast::*;
use syntax::codemap::Span;
use syntax::visit::FnKind;
use utils::{constants, span_lint, span_help_and_lint, snippet, snippet_opt, span_lint_and_then};
use utils::{constants, span_lint, span_help_and_lint, snippet, snippet_opt, span_lint_and_then, in_external_macro};
/// **What it does:** Checks for structure field patterns bound to wildcards.
///
@ -293,78 +293,7 @@ impl EarlyLintPass for MiscEarly {
"`--x` could be misinterpreted as pre-decrement by C programmers, is usually a no-op");
}
},
ExprKind::Lit(ref lit) => {
if_let_chain! {[
let LitKind::Int(value, ..) = lit.node,
let Some(src) = snippet_opt(cx, lit.span),
let Some(firstch) = src.chars().next(),
char::to_digit(firstch, 10).is_some()
], {
let mut prev = '\0';
for ch in src.chars() {
if ch == 'i' || ch == 'u' {
if prev != '_' {
span_lint(cx, UNSEPARATED_LITERAL_SUFFIX, lit.span,
"integer type suffix should be separated by an underscore");
}
break;
}
prev = ch;
}
if src.starts_with("0x") {
let mut seen = (false, false);
for ch in src.chars() {
match ch {
'a' ... 'f' => seen.0 = true,
'A' ... 'F' => seen.1 = true,
'i' | 'u' => break, // start of suffix already
_ => ()
}
}
if seen.0 && seen.1 {
span_lint(cx, MIXED_CASE_HEX_LITERALS, lit.span,
"inconsistent casing in hexadecimal literal");
}
} else if src.starts_with("0b") || src.starts_with("0o") {
/* nothing to do */
} else if value != 0 && src.starts_with('0') {
span_lint_and_then(cx,
ZERO_PREFIXED_LITERAL,
lit.span,
"this is a decimal constant",
|db| {
db.span_suggestion(
lit.span,
"if you mean to use a decimal constant, remove the `0` to remove confusion:",
src[1..].to_string(),
);
/*db.span_suggestion(
lit.span,
"if you mean to use an octal constant, use `0o`:",
format!("0o{}", &src[1..]),
); FIXME: rustc doesn't support multiple suggestions anymore */
});
}
}}
if_let_chain! {[
let LitKind::Float(..) = lit.node,
let Some(src) = snippet_opt(cx, lit.span),
let Some(firstch) = src.chars().next(),
char::to_digit(firstch, 10).is_some()
], {
let mut prev = '\0';
for ch in src.chars() {
if ch == 'f' {
if prev != '_' {
span_lint(cx, UNSEPARATED_LITERAL_SUFFIX, lit.span,
"float type suffix should be separated by an underscore");
}
break;
}
prev = ch;
}
}}
},
ExprKind::Lit(ref lit) => self.check_lit(cx, lit),
_ => (),
}
}
@ -393,3 +322,78 @@ impl EarlyLintPass for MiscEarly {
}
}
}
impl MiscEarly {
fn check_lit(&self, cx: &EarlyContext, lit: &Lit) {
if_let_chain! {[
let LitKind::Int(value, ..) = lit.node,
let Some(src) = snippet_opt(cx, lit.span),
let Some(firstch) = src.chars().next(),
char::to_digit(firstch, 10).is_some()
], {
let mut prev = '\0';
for ch in src.chars() {
if ch == 'i' || ch == 'u' {
if prev != '_' {
span_lint(cx, UNSEPARATED_LITERAL_SUFFIX, lit.span,
"integer type suffix should be separated by an underscore");
}
break;
}
prev = ch;
}
if src.starts_with("0x") {
let mut seen = (false, false);
for ch in src.chars() {
match ch {
'a' ... 'f' => seen.0 = true,
'A' ... 'F' => seen.1 = true,
'i' | 'u' => break, // start of suffix already
_ => ()
}
}
if seen.0 && seen.1 {
span_lint(cx, MIXED_CASE_HEX_LITERALS, lit.span,
"inconsistent casing in hexadecimal literal");
}
} else if src.starts_with("0b") || src.starts_with("0o") {
/* nothing to do */
} else if value != 0 && src.starts_with('0') {
span_lint_and_then(cx,
ZERO_PREFIXED_LITERAL,
lit.span,
"this is a decimal constant",
|db| {
db.span_suggestion(
lit.span,
"if you mean to use a decimal constant, remove the `0` to remove confusion:",
src[1..].to_string(),
);
/*db.span_suggestion(
lit.span,
"if you mean to use an octal constant, use `0o`:",
format!("0o{}", &src[1..]),
); FIXME: rustc doesn't support multiple suggestions anymore */
});
}
}}
if_let_chain! {[
let LitKind::Float(..) = lit.node,
let Some(src) = snippet_opt(cx, lit.span),
let Some(firstch) = src.chars().next(),
char::to_digit(firstch, 10).is_some()
], {
let mut prev = '\0';
for ch in src.chars() {
if ch == 'f' {
if prev != '_' {
span_lint(cx, UNSEPARATED_LITERAL_SUFFIX, lit.span,
"float type suffix should be separated by an underscore");
}
break;
}
prev = ch;
}
}}
}
}