[Refact] Add Ser/De Trait

core/src/ast.rs

@@ -3,8 +3,9 @@
 use crate::ident::Ident;
 use crate::interrupt::test_int;
 use crate::num::{Base, FormattingStyle, Number};
+use crate::result::FendCoreResult;
 use crate::scope::Scope;
-use crate::serialize::{deserialize_u8, serialize_u8};
+use crate::serialize::{Deserialize, Serialize};
 use crate::value::{built_in_function::BuiltInFunction, ApplyMulHandling, Value};
 use crate::Attrs;
 use std::sync::Arc;
@@ -34,8 +35,8 @@
 }
 
 impl Bop {
-	pub(crate) fn serialize(self, write: &mut impl io::Write) -> Result<(), FendError> {
-		let n = match self {
+	pub(crate) fn serialize(self, write: &mut impl io::Write) -> FendCoreResult<()> {
+		let n: u8 = match self {
 			Self::Plus => 0,
 			Self::ImplicitPlus => 1,
 			Self::Minus => 2,
@@ -51,12 +52,12 @@
 			Self::Combination => 12,
 			Self::Permutation => 13,
 		};
-		serialize_u8(n, write)?;
+		n.serialize(write)?;
 		Ok(())
 	}
 
-	pub(crate) fn deserialize(read: &mut impl io::Read) -> Result<Self, FendError> {
-		Ok(match deserialize_u8(read)? {
+	pub(crate) fn deserialize(read: &mut impl io::Read) -> FendCoreResult<Self> {
+		Ok(match u8::deserialize(read)? {
 			0 => Self::Plus,
 			1 => Self::ImplicitPlus,
 			2 => Self::Minus,
@@ -125,88 +126,88 @@
 }
 
 impl Expr {
-	pub(crate) fn serialize(&self, write: &mut impl io::Write) -> Result<(), FendError> {
+	pub(crate) fn serialize(&self, write: &mut impl io::Write) -> FendCoreResult<()> {
 		match self {
 			Self::Literal(x) => {
-				serialize_u8(0, write)?;
+				0u8.serialize(write)?;
 				x.serialize(write)?;
 			}
 			Self::Ident(i) => {
-				serialize_u8(1, write)?;
+				1u8.serialize(write)?;
 				i.serialize(write)?;
 			}
 			Self::Parens(e) => {
-				serialize_u8(2, write)?;
+				2u8.serialize(write)?;
 				e.serialize(write)?;
 			}
 			Self::UnaryMinus(e) => {
-				serialize_u8(3, write)?;
+				3u8.serialize(write)?;
 				e.serialize(write)?;
 			}
 			Self::UnaryPlus(e) => {
-				serialize_u8(4, write)?;
+				4u8.serialize(write)?;
 				e.serialize(write)?;
 			}
 			Self::UnaryDiv(e) => {
-				serialize_u8(5, write)?;
+				5u8.serialize(write)?;
 				e.serialize(write)?;
 			}
 			Self::Factorial(e) => {
-				serialize_u8(6, write)?;
+				6u8.serialize(write)?;
 				e.serialize(write)?;
 			}
 			Self::Bop(op, a, b) => {
-				serialize_u8(7, write)?;
+				7u8.serialize(write)?;
 				op.serialize(write)?;
 				a.serialize(write)?;
 				b.serialize(write)?;
 			}
 			Self::Apply(a, b) => {
-				serialize_u8(8, write)?;
+				8u8.serialize(write)?;
 				a.serialize(write)?;
 				b.serialize(write)?;
 			}
 			Self::ApplyFunctionCall(a, b) => {
-				serialize_u8(9, write)?;
+				9u8.serialize(write)?;
 				a.serialize(write)?;
 				b.serialize(write)?;
 			}
 			Self::ApplyMul(a, b) => {
-				serialize_u8(10, write)?;
+				10u8.serialize(write)?;
 				a.serialize(write)?;
 				b.serialize(write)?;
 			}
 			Self::As(a, b) => {
-				serialize_u8(11, write)?;
+				11u8.serialize(write)?;
 				a.serialize(write)?;
 				b.serialize(write)?;
 			}
 			Self::Fn(a, b) => {
-				serialize_u8(12, write)?;
+				12u8.serialize(write)?;
 				a.serialize(write)?;
 				b.serialize(write)?;
 			}
 			Self::Of(a, b) => {
-				serialize_u8(13, write)?;
+				13u8.serialize(write)?;
 				a.serialize(write)?;
 				b.serialize(write)?;
 			}
 			Self::Assign(a, b) => {
-				serialize_u8(14, write)?;
+				14u8.serialize(write)?;
 				a.serialize(write)?;
 				b.serialize(write)?;
 			}
 			Self::Statements(a, b) => {
-				serialize_u8(15, write)?;
+				15u8.serialize(write)?;
 				a.serialize(write)?;
 				b.serialize(write)?;
 			}
 		}
 		Ok(())
 	}
 
-	pub(crate) fn deserialize(read: &mut impl io::Read) -> Result<Self, FendError> {
-		Ok(match deserialize_u8(read)? {
+	pub(crate) fn deserialize(read: &mut impl io::Read) -> FendCoreResult<Self> {
+		Ok(match u8::deserialize(read)? {
 			0 => Self::Literal(Value::deserialize(read)?),
 			1 => Self::Ident(Ident::deserialize(read)?),
 			2 => Self::Parens(Box::new(Self::deserialize(read)?)),
@@ -260,7 +261,7 @@
 		attrs: Attrs,
 		ctx: &mut crate::Context,
 		int: &I,
-	) -> Result<String, FendError> {
+	) -> FendCoreResult<String> {
 		Ok(match self {
 			Self::Literal(Value::String(s)) => format!(r#""{}""#, s.as_ref()),
 			Self::Literal(v) => v.format_to_plain_string(0, attrs, ctx, int)?,
@@ -313,7 +314,7 @@
 }
 
 /// returns true if rhs is '-1' or '(-1)'
-fn should_compute_inverse<I: Interrupt>(rhs: &Expr, int: &I) -> Result<bool, FendError> {
+fn should_compute_inverse<I: Interrupt>(rhs: &Expr, int: &I) -> FendCoreResult<bool> {
 	if let Expr::UnaryMinus(inner) = rhs {
 		if let Expr::Literal(Value::Num(n)) = &**inner {
 			if n.is_unitless_one(int)? {
@@ -339,7 +340,7 @@
 	attrs: Attrs,
 	context: &mut crate::Context,
 	int: &I,
-) -> Result<Value, FendError> {
+) -> FendCoreResult<Value> {
 	macro_rules! eval {
 		($e:expr) => {
 			evaluate($e, scope.clone(), attrs, context, int)
@@ -459,7 +460,7 @@
 	b: Value,
 	scope: Option<Arc<Scope>>,
 	int: &I,
-) -> Result<Value, FendError> {
+) -> FendCoreResult<Value> {
 	Ok(match (a, b) {
 		(Value::Num(a), Value::Num(b)) => Value::Num(Box::new(a.add(*b, int)?)),
 		(Value::String(a), Value::String(b)) => {
@@ -503,7 +504,7 @@
 	attrs: Attrs,
 	context: &mut crate::Context,
 	int: &I,
-) -> Result<Value, FendError> {
+) -> FendCoreResult<Value> {
 	if let Expr::Ident(ident) = &b {
 		match ident.as_str() {
 			"bool" | "boolean" => {
@@ -580,7 +581,7 @@
 	attrs: Attrs,
 	context: &mut crate::Context,
 	int: &I,
-) -> Result<Value, FendError> {
+) -> FendCoreResult<Value> {
 	macro_rules! eval_box {
 		($input:expr) => {
 			Box::new(evaluate_to_value(

core/src/date.rs

@@ -11,7 +11,7 @@
 pub(crate) use month::Month;
 use year::Year;
 
-use crate::{error::FendError, ident::Ident, value::Value};
+use crate::{error::FendError, ident::Ident, result::FendCoreResult, value::Value};
 
 #[derive(Copy, Clone, Eq, PartialEq)]
 pub(crate) struct Date {
@@ -21,7 +21,7 @@
 }
 
 impl Date {
-	pub(crate) fn today(context: &mut crate::Context) -> Result<Self, FendError> {
+	pub(crate) fn today(context: &mut crate::Context) -> FendCoreResult<Self> {
 		let Some(current_time_info) = &context.current_time else {
 			return Err(FendError::UnableToGetCurrentDate);
 		};
@@ -120,7 +120,7 @@
 		}
 	}
 
-	pub(crate) fn diff_months(self, mut months: i64) -> Result<Self, FendError> {
+	pub(crate) fn diff_months(self, mut months: i64) -> FendCoreResult<Self> {
 		let mut result = self;
 		while months >= 12 {
 			result.year = result.year.next();
@@ -170,34 +170,34 @@
 		Ok(result)
 	}
 
-	pub(crate) fn parse(s: &str) -> Result<Self, FendError> {
+	pub(crate) fn parse(s: &str) -> FendCoreResult<Self> {
 		parser::parse_date(s)
 	}
 
-	pub(crate) fn serialize(self, write: &mut impl io::Write) -> Result<(), FendError> {
+	pub(crate) fn serialize(self, write: &mut impl io::Write) -> FendCoreResult<()> {
 		self.year.serialize(write)?;
 		self.month.serialize(write)?;
 		self.day.serialize(write)?;
 		Ok(())
 	}
 
-	pub(crate) fn deserialize(read: &mut impl io::Read) -> Result<Self, FendError> {
+	pub(crate) fn deserialize(read: &mut impl io::Read) -> FendCoreResult<Self> {
 		Ok(Self {
 			year: Year::deserialize(read)?,
 			month: Month::deserialize(read)?,
 			day: Day::deserialize(read)?,
 		})
 	}
 
-	pub(crate) fn get_object_member(self, key: &Ident) -> Result<crate::value::Value, FendError> {
+	pub(crate) fn get_object_member(self, key: &Ident) -> FendCoreResult<crate::value::Value> {
 		Ok(match key.as_str() {
 			"month" => Value::Month(self.month),
 			"day_of_week" => Value::DayOfWeek(self.day_of_week()),
 			_ => return Err(FendError::CouldNotFindKey(key.to_string())),
 		})
 	}
 
-	pub(crate) fn add(self, rhs: Value) -> Result<Value, FendError> {
+	pub(crate) fn add(self, rhs: Value) -> FendCoreResult<Value> {
 		let rhs = rhs.expect_num()?;
 		let int = &crate::interrupt::Never;
 		if rhs.unit_equal_to("day") {
@@ -212,7 +212,7 @@
 		}
 	}
 
-	pub(crate) fn sub(self, rhs: Value) -> Result<Value, FendError> {
+	pub(crate) fn sub(self, rhs: Value) -> FendCoreResult<Value> {
 		let int = &crate::interrupt::Never;
 		let rhs = rhs.expect_num()?;
 

core/src/date/day.rs

@@ -1,6 +1,6 @@
-use crate::serialize::deserialize_u8;
-use crate::serialize::serialize_u8;
+use crate::result::FendCoreResult;
 use crate::FendError;
+use crate::{Deserialize, Serialize};
 use std::fmt;
 use std::io;
 
@@ -17,13 +17,13 @@ impl Day {
 		Self(day)
 	}
 
-	pub(crate) fn serialize(self, write: &mut impl io::Write) -> Result<(), FendError> {
-		serialize_u8(self.value(), write)?;
+	pub(crate) fn serialize(self, write: &mut impl io::Write) -> FendCoreResult<()> {
+		self.value().serialize(write)?;
 		Ok(())
 	}
 
-	pub(crate) fn deserialize(read: &mut impl io::Read) -> Result<Self, FendError> {
-		let n = deserialize_u8(read)?;
+	pub(crate) fn deserialize(read: &mut impl io::Read) -> FendCoreResult<Self> {
+		let n = u8::deserialize(read)?;
 		if n == 0 || n >= 32 {
 			return Err(FendError::DeserializationError);
 		}

core/src/date/day_of_week.rs

@@ -1,6 +1,7 @@
 use crate::{
 	error::FendError,
-	serialize::{deserialize_u8, serialize_u8},
+	result::FendCoreResult,
+	serialize::{Deserialize, Serialize},
 };
 use std::{fmt, io};
 
@@ -43,13 +44,13 @@ impl DayOfWeek {
 		}
 	}
 
-	pub(crate) fn serialize(self, write: &mut impl io::Write) -> Result<(), FendError> {
-		serialize_u8(self.as_u8(), write)?;
+	pub(crate) fn serialize(self, write: &mut impl io::Write) -> FendCoreResult<()> {
+		self.as_u8().serialize(write)?;
 		Ok(())
 	}
 
-	pub(crate) fn deserialize(read: &mut impl io::Read) -> Result<Self, FendError> {
-		Ok(match deserialize_u8(read)? {
+	pub(crate) fn deserialize(read: &mut impl io::Read) -> FendCoreResult<Self> {
+		Ok(match u8::deserialize(read)? {
 			0 => Self::Sunday,
 			1 => Self::Monday,
 			2 => Self::Tuesday,

core/src/date/month.rs

@@ -1,22 +1,25 @@
-use crate::serialize::serialize_u8;
+use crate::result::FendCoreResult;
 use crate::FendError;
-use crate::{date::Year, serialize::deserialize_u8};
+use crate::{
+	date::Year,
+	serialize::{Deserialize, Serialize},
+};
 use std::{convert, fmt, io};
 
 #[derive(Copy, Clone, Eq, PartialEq)]
 pub(crate) enum Month {
-	January,
-	February,
-	March,
-	April,
-	May,
-	June,
-	July,
-	August,
-	September,
-	October,
-	November,
-	December,
+	January = 1,
+	February = 2,
+	March = 3,
+	April = 4,
+	May = 5,
+	June = 6,
+	July = 7,
+	August = 8,
+	September = 9,
+	October = 10,
+	November = 11,
+	December = 12,
 }
 
 impl Month {
@@ -85,13 +88,13 @@ impl Month {
 		}
 	}
 
-	pub(crate) fn serialize(self, write: &mut impl io::Write) -> Result<(), FendError> {
-		serialize_u8(self.as_u8(), write)?;
+	pub(crate) fn serialize(self, write: &mut impl io::Write) -> FendCoreResult<()> {
+		self.as_u8().serialize(write)?;
 		Ok(())
 	}
 
-	pub(crate) fn deserialize(read: &mut impl io::Read) -> Result<Self, FendError> {
-		Self::try_from(deserialize_u8(read)?).map_err(|_| FendError::DeserializationError)
+	pub(crate) fn deserialize(read: &mut impl io::Read) -> FendCoreResult<Self> {
+		Self::try_from(u8::deserialize(read)?).map_err(|_| FendError::DeserializationError)
 	}
 
 	fn as_u8(self) -> u8 {