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proper constant handling

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This commit is contained in:
pca006132 2020-12-30 10:45:35 +08:00
parent 03712e3762
commit 95789ec303
1 changed files with 14 additions and 10 deletions
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24
nac3core/src/expression.rs
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@ -7,6 +7,7 @@ use rustpython_parser::ast::{
UnaryOperator,
};
use std::collections::HashMap;
use std::convert::TryInto;
use std::rc::Rc;
type SymTable<'a> = HashMap<&'a str, Rc<Type>>;
@ -48,6 +49,7 @@ pub fn parse_expr(ctx: &GlobalContext, sym_table: &SymTable, expr: &Expression)
}
_ => Err("only list comprehension is supported".into()),
},
ExpressionType::True | ExpressionType::False => Ok(Some(PrimitiveType(BOOL_TYPE).into())),
_ => Err("not supported".into()),
}
}
@ -59,16 +61,18 @@ fn parse_constant(
) -> ParserResult {
use rustpython_parser::ast::Number;
match value {
Number::Integer { .. } => {
// not check the range now
Ok(Some(PrimitiveType(INT32_TYPE).into()))
// if i32::try_from(&value).is_ok() {
// Ok(PrimitiveType(INT32_TYPE).into())
// } else if i64::try_from(&value).is_ok() {
// Ok(PrimitiveType(INT64_TYPE).into())
// } else {
// Err("integer out of range".into())
// }
Number::Integer { value } => {
let int32: Result<i32, _> = value.try_into();
if int32.is_ok() {
Ok(Some(PrimitiveType(INT32_TYPE).into()))
} else {
let int64: Result<i64, _> = value.try_into();
if int64.is_ok() {
Ok(Some(PrimitiveType(INT64_TYPE).into()))
} else {
Err("integer out of range".into())
}
}
}
Number::Float { .. } => Ok(Some(PrimitiveType(FLOAT_TYPE).into())),
_ => Err("not supported".into()),