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use crate::semantics::*;
use crate::syntax::*;
use crate::*;
pub struct OutOfBoundsNumber;
impl OutOfBoundsNumber {
fn check_literal(
literal: Node,
type_: Type,
class: Id,
analysis: &mut Analysis,
diagnostics: &mut Vec<Diagnostic>,
) -> Option<()> {
let class = analysis.navigator.find_node(class)?;
let (name, _, _) = analysis.navigator.qualified_name_of(&class)?;
match (literal.kind, name.as_str()) {
(IntegerExpression(_, int), "Loa/UInt8") => {
Self::assert_in_bound(
literal.span,
type_,
int,
0.into(),
"0",
std::u8::MAX.into(),
"2ˆ8-1",
diagnostics,
);
}
(IntegerExpression(_, int), "Loa/UInt16") => {
Self::assert_in_bound(
literal.span,
type_,
int,
0.into(),
"0",
std::u16::MAX.into(),
"2ˆ16-1",
diagnostics,
);
}
(IntegerExpression(_, int), "Loa/UInt32") => {
Self::assert_in_bound(
literal.span,
type_,
int,
0.into(),
"0",
std::u32::MAX.into(),
"2ˆ32-1",
diagnostics,
);
}
(IntegerExpression(_, int), "Loa/UInt64") => {
Self::assert_in_bound(
literal.span,
type_,
int,
0.into(),
"0",
std::u64::MAX.into(),
"2ˆ64-1",
diagnostics,
);
}
(IntegerExpression(_, int), "Loa/UInt128") => {
Self::assert_in_bound(
literal.span,
type_,
int,
0.into(),
"0",
std::u128::MAX.into(),
"2ˆ128-1",
diagnostics,
);
}
(IntegerExpression(_, int), "Loa/Int8") => {
Self::assert_in_bound(
literal.span,
type_,
int,
std::i8::MIN.into(),
"-(2ˆ7-1)",
std::i8::MAX.into(),
"2ˆ7-1",
diagnostics,
);
}
(IntegerExpression(_, int), "Loa/Int16") => {
Self::assert_in_bound(
literal.span,
type_,
int,
std::i16::MIN.into(),
"-(2ˆ15-1)",
std::i16::MAX.into(),
"2ˆ15-1",
diagnostics,
);
}
(IntegerExpression(_, int), "Loa/Int32") => {
Self::assert_in_bound(
literal.span,
type_,
int,
std::i32::MIN.into(),
"-(2ˆ31-1)",
std::i32::MAX.into(),
"2ˆ31-1",
diagnostics,
);
}
(IntegerExpression(_, int), "Loa/Int64") => {
Self::assert_in_bound(
literal.span,
type_,
int,
std::i64::MIN.into(),
"-(2ˆ63-1)",
std::i64::MAX.into(),
"2ˆ63-1",
diagnostics,
);
}
(IntegerExpression(_, int), "Loa/Int128") => {
Self::assert_in_bound(
literal.span,
type_,
int,
std::i128::MIN.into(),
"-(2ˆ127-1)",
std::i128::MAX.into(),
"2ˆ127-1",
diagnostics,
);
}
(FloatExpression(_, fraction), "Loa/Float32") => {
Self::assert_in_bound(
literal.span,
type_,
fraction,
std::f32::MIN.into(),
"−(3.4028234664*10ˆ38)",
std::f32::MAX.into(),
"3.4028234664*10ˆ38",
diagnostics,
);
}
(FloatExpression(_, fraction), "Loa/Float64") => {
Self::assert_in_bound(
literal.span,
type_,
fraction,
std::f64::MIN.into(),
"-(1.7976931348623157*10ˆ308)",
std::f64::MAX.into(),
"1.7976931348623157*10ˆ308",
diagnostics,
);
}
_ => {}
}
None
}
fn assert_in_bound<N: PartialOrd>(
span: Span,
type_: Type,
number: N,
min: N,
min_str: &str,
max: N,
max_str: &str,
diagnostics: &mut Vec<Diagnostic>,
) {
if number < min {
diagnostics.push(Diagnostic::OutOfBounds(
span,
type_,
format!("less than {}", min_str),
));
} else if number > max {
diagnostics.push(Diagnostic::OutOfBounds(
span,
type_,
format!("greater than {}", max_str),
));
}
}
}
impl Checker for OutOfBoundsNumber {
fn check(&self, analysis: &mut Analysis, diagnostics: &mut Vec<Diagnostic>) {
for literal in analysis.navigator.all_number_literals() {
let type_ = analysis.types.get_type_of_expression(&literal);
match type_ {
Type::UnresolvedInteger(_, _) => continue,
Type::UnresolvedFloat(_, _) => continue,
Type::Class(_, class, _) => {
Self::check_literal(literal, type_, class, analysis, diagnostics);
continue;
}
_ => {}
}
diagnostics.push(Diagnostic::InvalidLiteralType(literal.span, type_));
}
}
}