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Merge #6454
6454: Fix overflow panic in convert_interger_literal assist r=matklad a=matklad
bors r+
🤖
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
This commit is contained in:
bors[bot]
GitHub
commit
7c94f1cb5e
@ -1,4 +1,4 @@
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use syntax::{ast, AstNode, SmolStr};
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use syntax::{ast, ast::Radix, AstNode};
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use crate::{AssistContext, AssistId, AssistKind, Assists, GroupLabel};
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@ -15,37 +15,34 @@ use crate::{AssistContext, AssistId, AssistKind, Assists, GroupLabel};
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// ```
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pub(crate) fn convert_integer_literal(acc: &mut Assists, ctx: &AssistContext) -> Option<()> {
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let literal = ctx.find_node_at_offset::<ast::Literal>()?;
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let (radix, value) = literal.int_value()?;
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let range = literal.syntax().text_range();
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let group_id = GroupLabel("Convert integer base".into());
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let suffix = match literal.kind() {
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ast::LiteralKind::IntNumber { suffix } => suffix,
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_ => return None,
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};
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let suffix_len = suffix.as_ref().map(|s| s.len()).unwrap_or(0);
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let raw_literal_text = literal.syntax().to_string();
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// Gets the literal's text without the type suffix and without underscores.
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let literal_text = raw_literal_text
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.chars()
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.take(raw_literal_text.len() - suffix_len)
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.filter(|c| *c != '_')
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.collect::<SmolStr>();
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let literal_base = IntegerLiteralBase::identify(&literal_text)?;
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for base in IntegerLiteralBase::bases() {
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if *base == literal_base {
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for &target_radix in Radix::ALL {
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if target_radix == radix {
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continue;
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}
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let mut converted = literal_base.convert(&literal_text, base);
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let label = if let Some(suffix) = &suffix {
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format!("Convert {} ({}) to {}", &literal_text, suffix, &converted)
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} else {
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format!("Convert {} to {}", &literal_text, &converted)
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let mut converted = match target_radix {
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Radix::Binary => format!("0b{:b}", value),
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Radix::Octal => format!("0o{:o}", value),
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Radix::Decimal => value.to_string(),
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Radix::Hexadecimal => format!("0x{:X}", value),
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};
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let label = format!(
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"Convert {} to {}{}",
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literal,
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converted,
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suffix.as_deref().unwrap_or_default()
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);
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// Appends the type suffix back into the new literal if it exists.
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if let Some(suffix) = &suffix {
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converted.push_str(&suffix);
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@ -63,79 +60,11 @@ pub(crate) fn convert_integer_literal(acc: &mut Assists, ctx: &AssistContext) ->
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Some(())
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}
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#[derive(Debug, PartialEq, Eq)]
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enum IntegerLiteralBase {
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Binary,
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Octal,
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Decimal,
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Hexadecimal,
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}
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impl IntegerLiteralBase {
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fn identify(literal_text: &str) -> Option<Self> {
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// We cannot express a literal in anything other than decimal in under 3 characters, so we return here if possible.
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if literal_text.len() < 3 && literal_text.chars().all(|c| c.is_digit(10)) {
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return Some(Self::Decimal);
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}
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let base = match &literal_text[..2] {
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"0b" => Self::Binary,
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"0o" => Self::Octal,
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"0x" => Self::Hexadecimal,
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_ => Self::Decimal,
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};
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// Checks that all characters after the base prefix are all valid digits for that base.
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if literal_text[base.prefix_len()..].chars().all(|c| c.is_digit(base.base())) {
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Some(base)
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} else {
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None
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}
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}
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fn convert(&self, literal_text: &str, to: &IntegerLiteralBase) -> String {
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let digits = &literal_text[self.prefix_len()..];
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let value = u128::from_str_radix(digits, self.base()).unwrap();
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match to {
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Self::Binary => format!("0b{:b}", value),
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Self::Octal => format!("0o{:o}", value),
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Self::Decimal => value.to_string(),
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Self::Hexadecimal => format!("0x{:X}", value),
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}
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}
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const fn base(&self) -> u32 {
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match self {
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Self::Binary => 2,
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Self::Octal => 8,
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Self::Decimal => 10,
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Self::Hexadecimal => 16,
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}
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}
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const fn prefix_len(&self) -> usize {
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match self {
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Self::Decimal => 0,
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_ => 2,
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}
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}
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const fn bases() -> &'static [IntegerLiteralBase] {
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&[
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IntegerLiteralBase::Binary,
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IntegerLiteralBase::Octal,
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IntegerLiteralBase::Decimal,
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IntegerLiteralBase::Hexadecimal,
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]
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}
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}
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#[cfg(test)]
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mod tests {
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use crate::tests::{check_assist_by_label, check_assist_not_applicable, check_assist_target};
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use super::*;
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use crate::tests::{check_assist_by_label, check_assist_target};
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#[test]
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fn binary_target() {
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@ -317,21 +246,21 @@ mod tests {
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convert_integer_literal,
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before,
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"const _: i32 = 0b1111101000;",
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"Convert 1000 to 0b1111101000",
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"Convert 1_00_0 to 0b1111101000",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 0o1750;",
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"Convert 1000 to 0o1750",
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"Convert 1_00_0 to 0o1750",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 0x3E8;",
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"Convert 1000 to 0x3E8",
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"Convert 1_00_0 to 0x3E8",
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);
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}
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@ -343,21 +272,21 @@ mod tests {
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convert_integer_literal,
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before,
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"const _: i32 = 0b1010;",
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"Convert 10 to 0b1010",
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"Convert 1_0 to 0b1010",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 0o12;",
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"Convert 10 to 0o12",
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"Convert 1_0 to 0o12",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 0xA;",
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"Convert 10 to 0xA",
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"Convert 1_0 to 0xA",
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);
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}
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@ -369,21 +298,21 @@ mod tests {
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convert_integer_literal,
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before,
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"const _: i32 = 0b11111111;",
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"Convert 0xFF to 0b11111111",
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"Convert 0x_F_F to 0b11111111",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 0o377;",
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"Convert 0xFF to 0o377",
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"Convert 0x_F_F to 0o377",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 255;",
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"Convert 0xFF to 255",
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"Convert 0x_F_F to 255",
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);
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}
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@ -395,21 +324,21 @@ mod tests {
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convert_integer_literal,
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before,
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"const _: i32 = 0o377;",
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"Convert 0b11111111 to 0o377",
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"Convert 0b1111_1111 to 0o377",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 255;",
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"Convert 0b11111111 to 255",
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"Convert 0b1111_1111 to 255",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 0xFF;",
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"Convert 0b11111111 to 0xFF",
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"Convert 0b1111_1111 to 0xFF",
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);
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}
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@ -421,21 +350,21 @@ mod tests {
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convert_integer_literal,
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before,
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"const _: i32 = 0b11111111;",
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"Convert 0o377 to 0b11111111",
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"Convert 0o3_77 to 0b11111111",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 255;",
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"Convert 0o377 to 255",
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"Convert 0o3_77 to 255",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 0xFF;",
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"Convert 0o377 to 0xFF",
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"Convert 0o3_77 to 0xFF",
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);
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}
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@ -447,21 +376,21 @@ mod tests {
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convert_integer_literal,
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before,
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"const _: i32 = 0b1111101000i32;",
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"Convert 1000 (i32) to 0b1111101000",
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"Convert 1000i32 to 0b1111101000i32",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 0o1750i32;",
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"Convert 1000 (i32) to 0o1750",
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"Convert 1000i32 to 0o1750i32",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 0x3E8i32;",
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"Convert 1000 (i32) to 0x3E8",
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"Convert 1000i32 to 0x3E8i32",
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);
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}
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@ -473,21 +402,21 @@ mod tests {
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convert_integer_literal,
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before,
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"const _: i32 = 0b1010i32;",
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"Convert 10 (i32) to 0b1010",
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"Convert 10i32 to 0b1010i32",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 0o12i32;",
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"Convert 10 (i32) to 0o12",
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"Convert 10i32 to 0o12i32",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 0xAi32;",
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"Convert 10 (i32) to 0xA",
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"Convert 10i32 to 0xAi32",
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);
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}
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@ -499,21 +428,21 @@ mod tests {
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convert_integer_literal,
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before,
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"const _: i32 = 0b11111111i32;",
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"Convert 0xFF (i32) to 0b11111111",
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"Convert 0xFFi32 to 0b11111111i32",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 0o377i32;",
|
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"Convert 0xFF (i32) to 0o377",
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"Convert 0xFFi32 to 0o377i32",
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);
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check_assist_by_label(
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convert_integer_literal,
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before,
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"const _: i32 = 255i32;",
|
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"Convert 0xFF (i32) to 255",
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"Convert 0xFFi32 to 255i32",
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);
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}
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@ -525,21 +454,21 @@ mod tests {
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convert_integer_literal,
|
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before,
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"const _: i32 = 0o377i32;",
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"Convert 0b11111111 (i32) to 0o377",
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"Convert 0b11111111i32 to 0o377i32",
|
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);
|
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|
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check_assist_by_label(
|
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convert_integer_literal,
|
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before,
|
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"const _: i32 = 255i32;",
|
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"Convert 0b11111111 (i32) to 255",
|
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"Convert 0b11111111i32 to 255i32",
|
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);
|
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|
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check_assist_by_label(
|
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convert_integer_literal,
|
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before,
|
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"const _: i32 = 0xFFi32;",
|
||||
"Convert 0b11111111 (i32) to 0xFF",
|
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"Convert 0b11111111i32 to 0xFFi32",
|
||||
);
|
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}
|
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|
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@ -551,21 +480,21 @@ mod tests {
|
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convert_integer_literal,
|
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before,
|
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"const _: i32 = 0b11111111i32;",
|
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"Convert 0o377 (i32) to 0b11111111",
|
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"Convert 0o377i32 to 0b11111111i32",
|
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);
|
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|
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check_assist_by_label(
|
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convert_integer_literal,
|
||||
before,
|
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"const _: i32 = 255i32;",
|
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"Convert 0o377 (i32) to 255",
|
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"Convert 0o377i32 to 255i32",
|
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);
|
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|
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check_assist_by_label(
|
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convert_integer_literal,
|
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before,
|
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"const _: i32 = 0xFFi32;",
|
||||
"Convert 0o377 (i32) to 0xFF",
|
||||
"Convert 0o377i32 to 0xFFi32",
|
||||
);
|
||||
}
|
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|
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@ -577,21 +506,21 @@ mod tests {
|
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convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 0b1111101000i32;",
|
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"Convert 1000 (i32) to 0b1111101000",
|
||||
"Convert 1_00_0i32 to 0b1111101000i32",
|
||||
);
|
||||
|
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check_assist_by_label(
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 0o1750i32;",
|
||||
"Convert 1000 (i32) to 0o1750",
|
||||
"Convert 1_00_0i32 to 0o1750i32",
|
||||
);
|
||||
|
||||
check_assist_by_label(
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 0x3E8i32;",
|
||||
"Convert 1000 (i32) to 0x3E8",
|
||||
"Convert 1_00_0i32 to 0x3E8i32",
|
||||
);
|
||||
}
|
||||
|
||||
@ -603,21 +532,21 @@ mod tests {
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 0b1010i32;",
|
||||
"Convert 10 (i32) to 0b1010",
|
||||
"Convert 1_0i32 to 0b1010i32",
|
||||
);
|
||||
|
||||
check_assist_by_label(
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 0o12i32;",
|
||||
"Convert 10 (i32) to 0o12",
|
||||
"Convert 1_0i32 to 0o12i32",
|
||||
);
|
||||
|
||||
check_assist_by_label(
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 0xAi32;",
|
||||
"Convert 10 (i32) to 0xA",
|
||||
"Convert 1_0i32 to 0xAi32",
|
||||
);
|
||||
}
|
||||
|
||||
@ -629,21 +558,21 @@ mod tests {
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 0b11111111i32;",
|
||||
"Convert 0xFF (i32) to 0b11111111",
|
||||
"Convert 0x_F_Fi32 to 0b11111111i32",
|
||||
);
|
||||
|
||||
check_assist_by_label(
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 0o377i32;",
|
||||
"Convert 0xFF (i32) to 0o377",
|
||||
"Convert 0x_F_Fi32 to 0o377i32",
|
||||
);
|
||||
|
||||
check_assist_by_label(
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 255i32;",
|
||||
"Convert 0xFF (i32) to 255",
|
||||
"Convert 0x_F_Fi32 to 255i32",
|
||||
);
|
||||
}
|
||||
|
||||
@ -655,21 +584,21 @@ mod tests {
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 0o377i32;",
|
||||
"Convert 0b11111111 (i32) to 0o377",
|
||||
"Convert 0b1111_1111i32 to 0o377i32",
|
||||
);
|
||||
|
||||
check_assist_by_label(
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 255i32;",
|
||||
"Convert 0b11111111 (i32) to 255",
|
||||
"Convert 0b1111_1111i32 to 255i32",
|
||||
);
|
||||
|
||||
check_assist_by_label(
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 0xFFi32;",
|
||||
"Convert 0b11111111 (i32) to 0xFF",
|
||||
"Convert 0b1111_1111i32 to 0xFFi32",
|
||||
);
|
||||
}
|
||||
|
||||
@ -681,21 +610,28 @@ mod tests {
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 0b11111111i32;",
|
||||
"Convert 0o377 (i32) to 0b11111111",
|
||||
"Convert 0o3_77i32 to 0b11111111i32",
|
||||
);
|
||||
|
||||
check_assist_by_label(
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 255i32;",
|
||||
"Convert 0o377 (i32) to 255",
|
||||
"Convert 0o3_77i32 to 255i32",
|
||||
);
|
||||
|
||||
check_assist_by_label(
|
||||
convert_integer_literal,
|
||||
before,
|
||||
"const _: i32 = 0xFFi32;",
|
||||
"Convert 0o377 (i32) to 0xFF",
|
||||
"Convert 0o3_77i32 to 0xFFi32",
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn convert_overflowing_literal() {
|
||||
let before = "const _: i32 =
|
||||
111111111111111111111111111111111111111111111111111111111111111111111111<|>;";
|
||||
check_assist_not_applicable(convert_integer_literal, before);
|
||||
}
|
||||
}
|
||||
|
||||
@ -16,7 +16,7 @@ use crate::{
|
||||
};
|
||||
|
||||
pub use self::{
|
||||
expr_ext::{ArrayExprKind, BinOp, Effect, ElseBranch, LiteralKind, PrefixOp, RangeOp},
|
||||
expr_ext::{ArrayExprKind, BinOp, Effect, ElseBranch, LiteralKind, PrefixOp, Radix, RangeOp},
|
||||
generated::{nodes::*, tokens::*},
|
||||
node_ext::{
|
||||
AttrKind, FieldKind, NameOrNameRef, PathSegmentKind, SelfParamKind, SlicePatComponents,
|
||||
|
||||
@ -358,6 +358,71 @@ impl ast::Literal {
|
||||
_ => unreachable!(),
|
||||
}
|
||||
}
|
||||
|
||||
// FIXME: should probably introduce string token type?
|
||||
// https://github.com/rust-analyzer/rust-analyzer/issues/6308
|
||||
pub fn int_value(&self) -> Option<(Radix, u128)> {
|
||||
let suffix = match self.kind() {
|
||||
LiteralKind::IntNumber { suffix } => suffix,
|
||||
_ => return None,
|
||||
};
|
||||
|
||||
let token = self.token();
|
||||
let mut text = token.text().as_str();
|
||||
text = &text[..text.len() - suffix.map_or(0, |it| it.len())];
|
||||
|
||||
let buf;
|
||||
if text.contains("_") {
|
||||
buf = text.replace('_', "");
|
||||
text = buf.as_str();
|
||||
};
|
||||
|
||||
let radix = Radix::identify(text)?;
|
||||
let digits = &text[radix.prefix_len()..];
|
||||
let value = u128::from_str_radix(digits, radix as u32).ok()?;
|
||||
Some((radix, value))
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug, PartialEq, Eq, Copy, Clone)]
|
||||
pub enum Radix {
|
||||
Binary = 2,
|
||||
Octal = 8,
|
||||
Decimal = 10,
|
||||
Hexadecimal = 16,
|
||||
}
|
||||
|
||||
impl Radix {
|
||||
pub const ALL: &'static [Radix] =
|
||||
&[Radix::Binary, Radix::Octal, Radix::Decimal, Radix::Hexadecimal];
|
||||
|
||||
fn identify(literal_text: &str) -> Option<Self> {
|
||||
// We cannot express a literal in anything other than decimal in under 3 characters, so we return here if possible.
|
||||
if literal_text.len() < 3 && literal_text.chars().all(|c| c.is_digit(10)) {
|
||||
return Some(Self::Decimal);
|
||||
}
|
||||
|
||||
let res = match &literal_text[..2] {
|
||||
"0b" => Radix::Binary,
|
||||
"0o" => Radix::Octal,
|
||||
"0x" => Radix::Hexadecimal,
|
||||
_ => Radix::Decimal,
|
||||
};
|
||||
|
||||
// Checks that all characters after the base prefix are all valid digits for that base.
|
||||
if literal_text[res.prefix_len()..].chars().all(|c| c.is_digit(res as u32)) {
|
||||
Some(res)
|
||||
} else {
|
||||
None
|
||||
}
|
||||
}
|
||||
|
||||
const fn prefix_len(&self) -> usize {
|
||||
match self {
|
||||
Self::Decimal => 0,
|
||||
_ => 2,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, PartialEq, Eq)]
|
||||
|
||||
Loading…
Reference in New Issue
Block a user