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Clippy conformance

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This commit is contained in:
Alex Bethel 2021-06-16 10:35:06 -05:00
parent e45df2efe7
commit b26c0ab639
3 changed files with 32 additions and 33 deletions
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18
src/interpret.rs
View file

@ -126,8 +126,8 @@ impl ExecEnv {
match kind {
// Arithmetic operators.
Add | Subtract | Multiply | Divide => {
let lhs = lhs.to_i32(&expr.span)?;
let rhs = rhs.to_i32(&expr.span)?;
let lhs = lhs.try_into_i32(&expr.span)?;
let rhs = rhs.try_into_i32(&expr.span)?;
let res = match kind {
Add => lhs.checked_add(rhs),
@ -145,8 +145,8 @@ impl ExecEnv {
// Numeric comparisons.
Less | Greater => {
let lhs = lhs.to_i32(&expr.span)?;
let rhs = rhs.to_i32(&expr.span)?;
let lhs = lhs.try_into_i32(&expr.span)?;
let rhs = rhs.try_into_i32(&expr.span)?;
let res = match kind {
Less => lhs < rhs,
@ -168,8 +168,8 @@ impl ExecEnv {
// Logical connectives.
And | Or => {
let lhs = lhs.to_bool();
let rhs = rhs.to_bool();
let lhs = lhs.into_bool();
let rhs = rhs.into_bool();
let res = match kind {
And => lhs && rhs,
Or => lhs || rhs,
@ -179,7 +179,7 @@ impl ExecEnv {
}
}
}
Not(expr) => Bool(!self.eval_expr(&expr)?.to_bool()),
Not(expr) => Bool(!self.eval_expr(&expr)?.into_bool()),
Literal(value) => value.clone(),
// TODO: not too happy with constructing an artificial
@ -225,7 +225,7 @@ impl ExecEnv {
.as_ref()
.map(|tape_len| {
self.eval_expr(tape_len)
.and_then(|v| v.to_i32(&stmt.span))
.and_then(|v| v.try_into_i32(&stmt.span))
.map(|len| len as usize)
})
.unwrap_or(Ok(crate::brian::DEFAULT_TAPE_SIZE_LIMIT))?,
@ -233,7 +233,7 @@ impl ExecEnv {
);
}
StmtKind::If { cond, body } => {
if self.eval_expr(cond)?.to_bool() {
if self.eval_expr(cond)?.into_bool() {
return self.eval_stmts_hs(&body.block, true);
}
}

41
src/parser.rs
View file

@ -80,7 +80,7 @@ impl<'source> Parser<'source> {
)),
Token::Rickroll => Ok(Stmt::new(
self.semi_terminated(StmtKind::Rickroll)?,
start..self.lexer.span().end
start..self.lexer.span().end,
)),
Token::Identifier(_)
@ -123,7 +123,7 @@ impl<'source> Parser<'source> {
match self
.lexer
.next()
.ok_or(Error::unexpected_eof(self.lexer.span().start))?
.ok_or_else(|| Error::unexpected_eof(self.lexer.span().start))?
{
Token::Identifier(iden) => Ok(Iden {
iden: if self.tdark {
@ -206,7 +206,7 @@ impl<'source> Parser<'source> {
let next = self
.lexer
.next()
.ok_or(Error::unexpected_eof(self.lexer.span().start))?;
.ok_or_else(|| Error::unexpected_eof(self.lexer.span().start))?;
ExprKind::Not(Box::new(self.parse_expr(next, buf)?))
},
start..self.lexer.span().end,
@ -225,13 +225,13 @@ impl<'source> Parser<'source> {
Ok(ExprKind::BinOp {
lhs: Box::new(
lhs.take()
.ok_or(Error::new(ErrorKind::MissingLhs, self.lexer.span()))?,
.ok_or_else(|| Error::new(ErrorKind::MissingLhs, self.lexer.span()))?,
),
rhs: {
let next = self
.lexer
.next()
.ok_or(Error::unexpected_eof(self.lexer.span().start))?;
.ok_or_else(|| Error::unexpected_eof(self.lexer.span().start))?;
Box::new(self.parse_expr(next, &mut None)?)
},
kind,
@ -245,12 +245,12 @@ impl<'source> Parser<'source> {
match self
.lexer
.next()
.ok_or(Error::unexpected_eof(self.lexer.span().start))?
.ok_or_else(|| Error::unexpected_eof(self.lexer.span().start))?
{
t if t == terminate => {
break buf
.take()
.ok_or(Error::new(ErrorKind::UnexpectedToken(t), self.lexer.span()))?
break buf.take().ok_or_else(|| {
Error::new(ErrorKind::UnexpectedToken(t), self.lexer.span())
})?
}
t => buf = Some(self.parse_expr(t, &mut buf)?),
}
@ -266,7 +266,7 @@ impl<'source> Parser<'source> {
match self
.lexer
.next()
.ok_or(Error::unexpected_eof(self.lexer.span().start))?
.ok_or_else(|| Error::unexpected_eof(self.lexer.span().start))?
{
Token::RightCurly => break,
t => block.push(self.parse(t)?),
@ -284,14 +284,13 @@ impl<'source> Parser<'source> {
match self
.lexer
.next()
.ok_or(Error::unexpected_eof(self.lexer.span().start))?
.ok_or_else(|| Error::unexpected_eof(self.lexer.span().start))?
{
// Print to stdout
Token::Print => {
let stmt = StmtKind::Print(buf.take().ok_or(Error::new(
ErrorKind::UnexpectedToken(Token::Print),
self.lexer.span(),
))?);
let stmt = StmtKind::Print(buf.take().ok_or_else(|| {
Error::new(ErrorKind::UnexpectedToken(Token::Print), self.lexer.span())
})?);
break self.semi_terminated(stmt)?;
}
@ -352,7 +351,7 @@ impl<'source> Parser<'source> {
match self
.lexer
.next()
.ok_or(Error::unexpected_eof(self.lexer.span().start))?
.ok_or_else(|| Error::unexpected_eof(self.lexer.span().start))?
{
Token::RightParen => break,
Token::Identifier(i) => {
@ -362,7 +361,7 @@ impl<'source> Parser<'source> {
match self
.lexer
.next()
.ok_or(Error::unexpected_eof(self.lexer.span().start))?
.ok_or_else(|| Error::unexpected_eof(self.lexer.span().start))?
{
Token::Comma => continue,
Token::RightParen => break,
@ -392,7 +391,7 @@ impl<'source> Parser<'source> {
let tape_len = match self
.lexer
.next()
.ok_or(Error::unexpected_eof(self.lexer.span().start))?
.ok_or_else(|| Error::unexpected_eof(self.lexer.span().start))?
{
Token::LeftParen => {
let len = Some(self.expr_flow(Token::RightParen)?);
@ -413,7 +412,7 @@ impl<'source> Parser<'source> {
match self
.lexer
.next()
.ok_or(Error::unexpected_eof(self.lexer.span().start))?
.ok_or_else(|| Error::unexpected_eof(self.lexer.span().start))?
{
Token::Plus
| Token::Minus
@ -443,7 +442,7 @@ impl<'source> Parser<'source> {
match self
.lexer
.next()
.ok_or(Error::unexpected_eof(self.lexer.span().start))?
.ok_or_else(|| Error::unexpected_eof(self.lexer.span().start))?
{
// End of argument list
Token::RightParen => {
@ -478,7 +477,7 @@ impl<'source> Parser<'source> {
let init = match self
.lexer
.next()
.ok_or(Error::unexpected_eof(self.lexer.span().start))?
.ok_or_else(|| Error::unexpected_eof(self.lexer.span().start))?
{
Token::Equal => Some(self.expr_flow(Token::Semicolon)?),
Token::Semicolon => None,

6
src/variables.rs
View file

@ -122,7 +122,7 @@ impl Value {
/// Attempt to coerce a Value to an integer. If the conversion
/// fails, the generated error message is associated with the
/// given span.
pub fn to_i32(self, span: &Range<usize>) -> Result<i32, Error> {
pub fn try_into_i32(self, span: &Range<usize>) -> Result<i32, Error> {
match self {
Value::Int(i) => Ok(i),
_ => Err(Error {
@ -133,13 +133,13 @@ impl Value {
}
/// Coerce a Value to a boolean. The conversion cannot fail.
pub fn to_bool(self) -> bool {
pub fn into_bool(self) -> bool {
match self {
// Booleans and abooleans have a trivial conversion.
Value::Bool(b) => b,
Value::Abool(b) => b.into(),
// The empty string is falsey, other strings are truthy.
Value::Str(s) => s.len() != 0,
Value::Str(s) => !s.is_empty(),
// 0 is falsey, nonzero is truthy.
Value::Int(x) => x != 0,
// Functios are always truthy.