Complete initial parser
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30b054df31
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2
.gitignore
vendored
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2
.gitignore
vendored
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/target
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Cargo.lock
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14
Cargo.toml
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14
Cargo.toml
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[package]
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name = "serde-git-config"
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version = "0.1.0"
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authors = ["Edward Shen <code@eddie.sh>"]
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edition = "2018"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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serde = "1.0"
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nom = "6"
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[dev-dependencies]
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serde_derive = "1.0"
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410
src/de.rs
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410
src/de.rs
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use std::ops::{AddAssign, MulAssign, Neg};
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use crate::values::Boolean;
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use crate::{
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error::{Error, Result},
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values::PeekParse,
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};
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use serde::de::{
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self, DeserializeSeed, EnumAccess, IntoDeserializer, MapAccess, SeqAccess, VariantAccess,
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Visitor,
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};
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use serde::Deserialize;
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pub struct Deserializer<'de> {
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// This string starts with the input data and characters are truncated off
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// the beginning as data is parsed.
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input: &'de str,
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}
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impl<'de> Deserializer<'de> {
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// By convention, `Deserializer` constructors are named like `from_xyz`.
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// That way basic use cases are satisfied by something like
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// `serde_json::from_str(...)` while advanced use cases that require a
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// deserializer can make one with `serde_json::Deserializer::from_str(...)`.
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pub fn from_str(input: &'de str) -> Self {
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Deserializer { input }
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}
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}
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// By convention, the public API of a Serde deserializer is one or more
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// `from_xyz` methods such as `from_str`, `from_bytes`, or `from_reader`
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// depending on what Rust types the deserializer is able to consume as input.
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//
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// This basic deserializer supports only `from_str`.
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pub fn from_str<'a, T>(s: &'a str) -> Result<T>
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where
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T: Deserialize<'a>,
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{
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let mut deserializer = Deserializer::from_str(s);
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let t = T::deserialize(&mut deserializer)?;
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if deserializer.input.is_empty() {
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Ok(t)
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} else {
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todo!()
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}
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}
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impl<'de> Deserializer<'de> {
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fn peek(&mut self) -> Result<char> {
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self.input.chars().next().ok_or(Error::Eof)
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}
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fn next(&mut self) -> Result<char> {
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let ch = self.peek()?;
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self.input = &self.input[ch.len_utf8()..];
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Ok(ch)
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}
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fn parse_bool(&mut self) -> Result<bool> {
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let (value, size) = Boolean::peek_parse(self.input)?;
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self.input = &self.input[size..];
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Ok(value)
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}
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fn parse_unsigned<T>(&mut self) -> Result<T> {
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self.parse_int(true)
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}
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fn parse_signed<T>(&mut self) -> Result<T> {
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self.parse_int(false)
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}
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fn parse_int<T>(&mut self, positive_only: bool) -> Result<T> {
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self.consume_whitespace()?;
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match self.next()? {
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c @ '0'..='9' => {
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let mut significand = (c as u8 - b'0') as u64;
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loop {
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match self.peek()? {
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c @ '0'..='9' => {
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let digit = (c as u8 - b'0') as u64;
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if significand.wrapping_mul(10).wrapping_add(digit) < u64::MAX {}
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let _ = self.next();
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significand = significand * 10 + digit;
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}
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_ => {
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// return self.parse_number(positive, significand);
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todo!()
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}
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}
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}
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}
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_ => Err(Error::InvalidInteger),
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}
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}
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fn consume_whitespace(&mut self) -> Result<()> {
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loop {
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match self.peek()? {
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' ' | '\n' | '\t' | '\r' => {
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let _ = self.next();
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}
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_ => {
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return Ok(());
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}
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}
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}
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}
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}
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impl<'de, 'a> de::Deserializer<'de> for &'a mut Deserializer<'de> {
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type Error = Error;
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fn deserialize_any<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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match self.peek()? {
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_ => todo!(),
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}
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}
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fn deserialize_bool<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_bool(self.parse_bool()?)
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}
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fn deserialize_i8<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_i8(self.parse_signed()?)
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}
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fn deserialize_i16<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_i16(self.parse_signed()?)
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}
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fn deserialize_i32<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_i32(self.parse_signed()?)
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}
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fn deserialize_i64<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_i64(self.parse_signed()?)
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}
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fn deserialize_u8<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_u8(self.parse_unsigned()?)
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}
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fn deserialize_u16<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_u16(self.parse_unsigned()?)
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}
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fn deserialize_u32<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_u32(self.parse_unsigned()?)
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}
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fn deserialize_u64<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_u64(self.parse_unsigned()?)
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}
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fn deserialize_f32<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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self.deserialize_f64(visitor)
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}
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fn deserialize_f64<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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unimplemented!("Cannot deserialize into a float value! Use a integer variant instead.")
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}
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fn deserialize_char<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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self.deserialize_str(visitor)
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}
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fn deserialize_str<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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todo!()
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}
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fn deserialize_string<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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self.deserialize_str(visitor)
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}
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fn deserialize_bytes<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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todo!()
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}
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fn deserialize_byte_buf<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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todo!()
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}
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fn deserialize_option<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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todo!()
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}
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fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_unit()
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}
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fn deserialize_unit_struct<V>(self, _name: &'static str, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_unit()
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}
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fn deserialize_newtype_struct<V>(self, name: &'static str, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_newtype_struct(self)
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}
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fn deserialize_seq<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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todo!()
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}
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fn deserialize_tuple<V>(self, _len: usize, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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self.deserialize_seq(visitor)
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}
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fn deserialize_tuple_struct<V>(
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self,
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_name: &'static str,
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_len: usize,
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visitor: V,
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) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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self.deserialize_seq(visitor)
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}
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fn deserialize_map<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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self.consume_whitespace()?;
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Ok(visitor.visit_map(self)?)
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}
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fn deserialize_struct<V>(
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self,
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_name: &'static str,
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_fields: &'static [&'static str],
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visitor: V,
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) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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visitor.visit_map(self)
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}
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fn deserialize_enum<V>(
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self,
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name: &'static str,
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variants: &'static [&'static str],
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visitor: V,
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) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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todo!()
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}
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fn deserialize_identifier<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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{
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todo!()
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}
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fn deserialize_ignored_any<V>(self, visitor: V) -> Result<V::Value>
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where
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V: Visitor<'de>,
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||||
{
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todo!()
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}
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}
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impl<'de, 'a> MapAccess<'de> for Deserializer<'de> {
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type Error = Error;
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fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>>
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where
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K: DeserializeSeed<'de>,
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{
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// A map section is ended when another section begins or we hit EOL.
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// Therefore, we only check if a next section begins or in the case of
|
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// EOL indicate that we're done.
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if self.peek().unwrap_or('[') == '[' {
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return Ok(None);
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}
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seed.deserialize(self).map(Some)
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}
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fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value>
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where
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V: DeserializeSeed<'de>,
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||||
{
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seed.deserialize(self)
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}
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}
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#[cfg(test)]
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mod deserialize {
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use crate::from_str;
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use serde_derive::Deserialize;
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#[test]
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fn unit() {
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#[derive(Deserialize, PartialEq, Debug)]
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struct Test;
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assert_eq!(Test, from_str("").unwrap());
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assert_eq!((), from_str("").unwrap());
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}
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#[test]
|
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#[should_panic]
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||||
fn float() {
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from_str::<f64>("").unwrap();
|
||||
}
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#[test]
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||||
fn basic() {
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#[derive(Deserialize, PartialEq, Debug)]
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struct Config {
|
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user: User,
|
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}
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|
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#[derive(Deserialize, PartialEq, Debug)]
|
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struct User {
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email: String,
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name: String,
|
||||
}
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let expected = Config {
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user: User {
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email: "code@eddie.sh".to_string(),
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||||
name: "Edward Shen".to_string(),
|
||||
},
|
||||
};
|
||||
|
||||
assert_eq!(
|
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expected,
|
||||
from_str("[user]\nemail=code@eddie.sh\nname=Edward Shen\n").unwrap()
|
||||
);
|
||||
}
|
||||
}
|
||||
42
src/error.rs
Normal file
42
src/error.rs
Normal file
|
|
@ -0,0 +1,42 @@
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|||
use std::fmt::{self, Display};
|
||||
|
||||
use serde::{de, ser};
|
||||
|
||||
pub type Result<T> = std::result::Result<T, Error>;
|
||||
|
||||
// This is a bare-bones implementation. A real library would provide additional
|
||||
// information in its error type, for example the line and column at which the
|
||||
// error occurred, the byte offset into the input, or the current key being
|
||||
// processed.
|
||||
#[derive(Clone, Debug, PartialEq)]
|
||||
pub enum Error {
|
||||
Message(String),
|
||||
Eof,
|
||||
InvalidInteger,
|
||||
InvalidBoolean(String),
|
||||
}
|
||||
|
||||
impl ser::Error for Error {
|
||||
fn custom<T: Display>(msg: T) -> Self {
|
||||
Error::Message(msg.to_string())
|
||||
}
|
||||
}
|
||||
|
||||
impl de::Error for Error {
|
||||
fn custom<T: Display>(msg: T) -> Self {
|
||||
Error::Message(msg.to_string())
|
||||
}
|
||||
}
|
||||
|
||||
impl Display for Error {
|
||||
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
|
||||
match self {
|
||||
Error::Message(msg) => formatter.write_str(msg),
|
||||
Error::Eof => formatter.write_str("unexpected end of input"),
|
||||
Error::InvalidInteger => formatter.write_str("invalid integer given"),
|
||||
Error::InvalidBoolean(_) => formatter.write_str("invalid boolean given"),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl std::error::Error for Error {}
|
||||
9
src/lib.rs
Normal file
9
src/lib.rs
Normal file
|
|
@ -0,0 +1,9 @@
|
|||
// mod de;
|
||||
mod error;
|
||||
// mod ser;
|
||||
pub mod parser;
|
||||
mod values;
|
||||
|
||||
// pub use de::{from_str, Deserializer};
|
||||
pub use error::{Error, Result};
|
||||
// pub use ser::{to_string, Serializer};
|
||||
698
src/parser.rs
Normal file
698
src/parser.rs
Normal file
|
|
@ -0,0 +1,698 @@
|
|||
use crate::values::{Boolean, TrueVariant, Value};
|
||||
use nom::bytes::complete::{escaped, tag, take_till, take_while};
|
||||
use nom::character::complete::{char, none_of, one_of};
|
||||
use nom::character::{is_newline, is_space};
|
||||
use nom::combinator::{map, opt};
|
||||
use nom::error::{Error as NomError, ErrorKind};
|
||||
use nom::multi::many1;
|
||||
use nom::sequence::delimited;
|
||||
use nom::IResult;
|
||||
use nom::{branch::alt, multi::many0};
|
||||
|
||||
/// An event is any syntactic event that occurs in the config.
|
||||
#[derive(PartialEq, Debug)]
|
||||
pub enum Event<'a> {
|
||||
Comment(Comment<'a>),
|
||||
Key(&'a str),
|
||||
/// Represents any token used to signify a new line character. On Unix
|
||||
/// platforms, this is typically just `\n`, but can be any valid newline
|
||||
/// sequence.
|
||||
Newline(&'a str),
|
||||
///
|
||||
Value(Value<'a>),
|
||||
/// Any value that isn't completed. This occurs when the value is continued
|
||||
/// onto the next line. A Newline event is guaranteed after, followed by
|
||||
/// either another ValueNotDone or a ValueDone.
|
||||
ValueNotDone(&'a str),
|
||||
/// The last line of a value which was continued onto another line.
|
||||
ValueDone(&'a str),
|
||||
}
|
||||
|
||||
#[derive(PartialEq, Debug)]
|
||||
pub struct Section<'a> {
|
||||
section_header: SectionHeader<'a>,
|
||||
items: Vec<Event<'a>>,
|
||||
}
|
||||
|
||||
#[derive(PartialEq, Debug)]
|
||||
pub struct SectionHeader<'a> {
|
||||
name: &'a str,
|
||||
subsection_name: Option<&'a str>,
|
||||
}
|
||||
|
||||
#[derive(PartialEq, Debug)]
|
||||
pub struct Comment<'a> {
|
||||
comment_tag: char,
|
||||
comment: &'a str,
|
||||
}
|
||||
|
||||
pub struct Parser<'a> {
|
||||
init_comments: Vec<Comment<'a>>,
|
||||
sections: Vec<Section<'a>>,
|
||||
}
|
||||
|
||||
pub fn parse(input: &str) -> Result<Parser<'_>, ()> {
|
||||
let (i, comments) = many0(comment)(input).unwrap();
|
||||
let (i, sections) = many1(section)(i).unwrap();
|
||||
|
||||
Ok(Parser {
|
||||
init_comments: comments,
|
||||
sections,
|
||||
})
|
||||
}
|
||||
|
||||
fn comment<'a>(i: &'a str) -> IResult<&'a str, Comment<'a>> {
|
||||
let i = i.trim_start();
|
||||
let (i, comment_tag) = one_of(";#")(i)?;
|
||||
let (i, comment) = take_till(is_char_newline)(i)?;
|
||||
Ok((
|
||||
i,
|
||||
Comment {
|
||||
comment_tag,
|
||||
comment,
|
||||
},
|
||||
))
|
||||
}
|
||||
|
||||
fn section<'a>(i: &'a str) -> IResult<&'a str, Section<'a>> {
|
||||
let (i, section_header) = section_header(i)?;
|
||||
// need alt here for eof?
|
||||
let (i, items) = many1(alt((
|
||||
map(section_body, |(key, values)| {
|
||||
let mut vec = vec![Event::Key(key)];
|
||||
vec.extend(values);
|
||||
vec
|
||||
}),
|
||||
map(comment, |comment| vec![Event::Comment(comment)]),
|
||||
)))(i)?;
|
||||
Ok((
|
||||
i,
|
||||
Section {
|
||||
section_header,
|
||||
items: items.into_iter().flatten().collect(),
|
||||
},
|
||||
))
|
||||
}
|
||||
|
||||
fn section_header<'a>(i: &'a str) -> IResult<&'a str, SectionHeader<'a>> {
|
||||
let (i, _) = char('[')(i)?;
|
||||
// No spaces must be between section name and section start
|
||||
let (i, name) = take_while(|c: char| c.is_ascii_alphanumeric() || c == '-' || c == '.')(i)?;
|
||||
|
||||
if let Ok((i, _)) = char::<_, NomError<&str>>(']')(i) {
|
||||
// Either section does not have a subsection or using deprecated
|
||||
// subsection syntax at this point.
|
||||
let header = match name.rfind('.') {
|
||||
Some(index) => SectionHeader {
|
||||
name: &name[..index],
|
||||
subsection_name: Some(&name[index + 1..]),
|
||||
},
|
||||
None => SectionHeader {
|
||||
name: name,
|
||||
subsection_name: None,
|
||||
},
|
||||
};
|
||||
|
||||
return Ok((i, header));
|
||||
}
|
||||
|
||||
// Section header must be using modern subsection syntax at this point.
|
||||
|
||||
let (i, _) = take_spaces(i)?;
|
||||
|
||||
let (i, subsection_name) = delimited(
|
||||
char('"'),
|
||||
opt(escaped(none_of("\"\\\n\0"), '\\', one_of(r#""\"#))),
|
||||
tag("\"]"),
|
||||
)(i)?;
|
||||
|
||||
Ok((
|
||||
i,
|
||||
SectionHeader {
|
||||
name: name,
|
||||
// We know that there's some section name here, so if we get an
|
||||
// empty vec here then we actually parsed an empty section name.
|
||||
subsection_name: subsection_name.or(Some("")),
|
||||
},
|
||||
))
|
||||
}
|
||||
|
||||
fn take_spaces<'a>(i: &'a str) -> IResult<&'a str, &'a str> {
|
||||
take_while(|c: char| c.is_ascii() && is_space(c as u8))(i)
|
||||
}
|
||||
|
||||
fn section_body<'a>(i: &'a str) -> IResult<&'a str, (&'a str, Vec<Event<'a>>)> {
|
||||
let i = i.trim_start();
|
||||
// maybe need to check for [ here
|
||||
let (i, name) = config_name(i)?;
|
||||
let (i, _) = take_spaces(i)?;
|
||||
let (i, value) = config_value(i)?;
|
||||
|
||||
Ok((i, (name, value)))
|
||||
}
|
||||
|
||||
/// Parses the config name of a config pair. Assumes the input has already been
|
||||
/// trimmed of any leading whitespace.
|
||||
fn config_name<'a>(i: &'a str) -> IResult<&'a str, &'a str> {
|
||||
if i.is_empty() {
|
||||
return Err(nom::Err::Error(NomError {
|
||||
input: i,
|
||||
code: ErrorKind::NonEmpty,
|
||||
}));
|
||||
}
|
||||
|
||||
if !i.chars().nth(0).unwrap().is_alphabetic() {
|
||||
return Err(nom::Err::Error(NomError {
|
||||
input: i,
|
||||
code: ErrorKind::Alpha,
|
||||
}));
|
||||
}
|
||||
|
||||
take_while(|c: char| c.is_alphanumeric() || c == '-')(i)
|
||||
}
|
||||
|
||||
fn config_value<'a>(i: &'a str) -> IResult<&'a str, Vec<Event<'a>>> {
|
||||
if let (i, Some(_)) = opt(char('='))(i)? {
|
||||
let (i, _) = take_spaces(i)?;
|
||||
value_impl(i)
|
||||
} else {
|
||||
Ok((
|
||||
i,
|
||||
vec![Event::Value(Value::Boolean(Boolean::True(
|
||||
TrueVariant::Implicit,
|
||||
)))],
|
||||
))
|
||||
}
|
||||
}
|
||||
|
||||
fn value_impl<'a>(i: &'a str) -> IResult<&'a str, Vec<Event<'a>>> {
|
||||
// I wrote this code and don't know how it works.
|
||||
//
|
||||
// Even after sleeping on it I still don't know how it works.
|
||||
|
||||
let mut events = vec![];
|
||||
let mut parsed_index: usize = 0;
|
||||
let mut offset: usize = 0;
|
||||
|
||||
let mut was_prev_char_escape_char = false;
|
||||
// This is required to ignore comment markers if they're in a quote.
|
||||
let mut is_in_quotes = false;
|
||||
// Used to determine if we return a Value or Value{Not,}Done
|
||||
let mut partial_value_found = false;
|
||||
|
||||
for (index, c) in i.as_bytes().iter().enumerate() {
|
||||
if was_prev_char_escape_char {
|
||||
was_prev_char_escape_char = false;
|
||||
match c {
|
||||
// We're escaping a newline, which means we've found a
|
||||
// continuation.
|
||||
b'\n' => {
|
||||
partial_value_found = true;
|
||||
events.push(Event::ValueNotDone(&i[offset..index - 1]));
|
||||
events.push(Event::Newline(&i[index..index + 1]));
|
||||
offset = index + 1;
|
||||
parsed_index = 0;
|
||||
}
|
||||
b't' | b'\\' | b'n' | b'"' => (),
|
||||
_ => {
|
||||
return Err(nom::Err::Error(NomError {
|
||||
input: i,
|
||||
code: ErrorKind::Escaped,
|
||||
}));
|
||||
}
|
||||
}
|
||||
} else {
|
||||
match c {
|
||||
b'\n' => {
|
||||
parsed_index = index;
|
||||
break;
|
||||
}
|
||||
b';' | b'#' if !is_in_quotes => {
|
||||
parsed_index = index;
|
||||
break;
|
||||
}
|
||||
b'\\' => was_prev_char_escape_char = true,
|
||||
b'"' => is_in_quotes = !is_in_quotes,
|
||||
_ => {}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if parsed_index == 0 {
|
||||
parsed_index = i.len();
|
||||
}
|
||||
|
||||
// Handle incomplete escape
|
||||
if was_prev_char_escape_char {
|
||||
return Err(nom::Err::Error(NomError {
|
||||
input: i,
|
||||
code: ErrorKind::Escaped,
|
||||
}));
|
||||
}
|
||||
|
||||
// Handle incomplete quotes
|
||||
if is_in_quotes {
|
||||
return Err(nom::Err::Error(NomError {
|
||||
input: i,
|
||||
code: ErrorKind::Tag,
|
||||
}));
|
||||
}
|
||||
|
||||
let remainder_value = &i[offset..parsed_index].trim_end();
|
||||
if partial_value_found {
|
||||
events.push(Event::ValueDone(remainder_value));
|
||||
} else {
|
||||
events.push(Event::Value(Value::from_str(remainder_value)));
|
||||
}
|
||||
|
||||
Ok((&i[parsed_index..], events))
|
||||
}
|
||||
|
||||
fn is_char_newline(c: char) -> bool {
|
||||
c.is_ascii() && is_newline(c as u8)
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod parse {
|
||||
use super::*;
|
||||
|
||||
fn fully_consumed<T>(t: T) -> (&'static str, T) {
|
||||
("", t)
|
||||
}
|
||||
|
||||
mod comments {
|
||||
use super::super::*;
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn semicolon() {
|
||||
assert_eq!(
|
||||
comment("; this is a semicolon comment").unwrap(),
|
||||
fully_consumed(Comment {
|
||||
comment_tag: ';',
|
||||
comment: " this is a semicolon comment",
|
||||
})
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn octothorpe() {
|
||||
assert_eq!(
|
||||
comment("# this is an octothorpe comment").unwrap(),
|
||||
fully_consumed(Comment {
|
||||
comment_tag: '#',
|
||||
comment: " this is an octothorpe comment",
|
||||
})
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn multiple_markers() {
|
||||
assert_eq!(
|
||||
comment("###### this is an octothorpe comment").unwrap(),
|
||||
fully_consumed(Comment {
|
||||
comment_tag: '#',
|
||||
comment: "##### this is an octothorpe comment",
|
||||
})
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
mod section_headers {
|
||||
use super::super::*;
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn no_subsection() {
|
||||
assert_eq!(
|
||||
section_header("[hello]").unwrap(),
|
||||
fully_consumed(SectionHeader {
|
||||
name: "hello",
|
||||
subsection_name: None
|
||||
})
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn modern_subsection() {
|
||||
assert_eq!(
|
||||
section_header(r#"[hello "world"]"#).unwrap(),
|
||||
fully_consumed(SectionHeader {
|
||||
name: "hello",
|
||||
subsection_name: Some("world")
|
||||
})
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn escaped_subsection() {
|
||||
assert_eq!(
|
||||
section_header(r#"[hello "foo\\bar\""]"#).unwrap(),
|
||||
fully_consumed(SectionHeader {
|
||||
name: "hello",
|
||||
subsection_name: Some(r#"foo\\bar\""#)
|
||||
})
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn deprecated_subsection() {
|
||||
assert_eq!(
|
||||
section_header(r#"[hello.world]"#).unwrap(),
|
||||
fully_consumed(SectionHeader {
|
||||
name: "hello",
|
||||
subsection_name: Some("world")
|
||||
})
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn empty_legacy_subsection_name() {
|
||||
assert_eq!(
|
||||
section_header(r#"[hello.]"#).unwrap(),
|
||||
fully_consumed(SectionHeader {
|
||||
name: "hello",
|
||||
subsection_name: Some("")
|
||||
})
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn empty_modern_subsection_name() {
|
||||
assert_eq!(
|
||||
section_header(r#"[hello ""]"#).unwrap(),
|
||||
fully_consumed(SectionHeader {
|
||||
name: "hello",
|
||||
subsection_name: Some("")
|
||||
})
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn newline_in_header() {
|
||||
assert!(section_header("[hello\n]").is_err())
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn null_byte_in_header() {
|
||||
assert!(section_header("[hello\0]").is_err())
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn right_brace_in_subsection_name() {
|
||||
assert_eq!(
|
||||
section_header(r#"[hello "]"]"#).unwrap(),
|
||||
fully_consumed(SectionHeader {
|
||||
name: "hello",
|
||||
subsection_name: Some("]")
|
||||
})
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
mod config_name {
|
||||
use super::super::*;
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn just_name() {
|
||||
assert_eq!(config_name("name").unwrap(), fully_consumed("name"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn must_start_with_alphabetic() {
|
||||
assert!(config_name("4aaa").is_err());
|
||||
assert!(config_name("-aaa").is_err());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn cannot_be_empty() {
|
||||
assert!(config_name("").is_err())
|
||||
}
|
||||
}
|
||||
|
||||
mod value_no_continuation {
|
||||
use super::super::*;
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn no_comment() {
|
||||
assert_eq!(
|
||||
value_impl("hello").unwrap(),
|
||||
fully_consumed(vec![Event::Value(Value::Other("hello"))])
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn no_comment_newline() {
|
||||
assert_eq!(
|
||||
value_impl("hello\na").unwrap(),
|
||||
("\na", vec![Event::Value(Value::Other("hello"))])
|
||||
)
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn no_comment_is_trimmed() {
|
||||
assert_eq!(
|
||||
value_impl("hello").unwrap(),
|
||||
value_impl("hello ").unwrap()
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn semicolon_comment_not_consumed() {
|
||||
assert_eq!(
|
||||
value_impl("hello;world").unwrap(),
|
||||
(";world", vec![Event::Value(Value::Other("hello")),])
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn octothorpe_comment_not_consumed() {
|
||||
assert_eq!(
|
||||
value_impl("hello#world").unwrap(),
|
||||
("#world", vec![Event::Value(Value::Other("hello")),])
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn values_with_comments_are_trimmed() {
|
||||
assert_eq!(
|
||||
value_impl("hello#world").unwrap(),
|
||||
value_impl("hello #world").unwrap(),
|
||||
);
|
||||
assert_eq!(
|
||||
value_impl("hello;world").unwrap(),
|
||||
value_impl("hello ;world").unwrap(),
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn trans_escaped_comment_marker_not_consumed() {
|
||||
assert_eq!(
|
||||
value_impl(r##"hello"#"world; a"##).unwrap(),
|
||||
(
|
||||
"; a",
|
||||
vec![Event::Value(Value::Other(r##"hello"#"world"##)),]
|
||||
)
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn complex_test() {
|
||||
assert_eq!(
|
||||
value_impl(r#"value";";ahhhh"#).unwrap(),
|
||||
(";ahhhh", vec![Event::Value(Value::Other(r#"value";""#)),])
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn garbage_after_continution_is_err() {
|
||||
assert!(value_impl("hello \\afwjdls").is_err());
|
||||
}
|
||||
}
|
||||
|
||||
mod value_continuation {
|
||||
use super::super::*;
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn simple_continuation() {
|
||||
assert_eq!(
|
||||
value_impl("hello\\\nworld").unwrap(),
|
||||
fully_consumed(vec![
|
||||
Event::ValueNotDone("hello"),
|
||||
Event::Newline("\n"),
|
||||
Event::ValueDone("world")
|
||||
])
|
||||
);
|
||||
}
|
||||
#[test]
|
||||
fn complex_continuation_with_leftover_comment() {
|
||||
assert_eq!(
|
||||
value_impl("1 \"\\\"\\\na ; e \"\\\"\\\nd # \"b\t ; c").unwrap(),
|
||||
(
|
||||
"# \"b\t ; c",
|
||||
vec![
|
||||
Event::ValueNotDone(r#"1 "\""#),
|
||||
Event::Newline("\n"),
|
||||
Event::ValueNotDone(r#"a ; e "\""#),
|
||||
Event::Newline("\n"),
|
||||
Event::ValueDone("d"),
|
||||
]
|
||||
)
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn quote_split_over_two_lines_with_leftover_comment() {
|
||||
assert_eq!(
|
||||
value_impl("\"\\\n;\";a").unwrap(),
|
||||
(
|
||||
";a",
|
||||
vec![
|
||||
Event::ValueNotDone("\""),
|
||||
Event::Newline("\n"),
|
||||
Event::ValueDone(";\""),
|
||||
]
|
||||
)
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
mod section {
|
||||
use super::super::*;
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn simple_section() {
|
||||
let section_data = r#"[hello]
|
||||
a = b
|
||||
c
|
||||
d = "lol""#;
|
||||
assert_eq!(
|
||||
section(section_data).unwrap(),
|
||||
fully_consumed(Section {
|
||||
section_header: SectionHeader {
|
||||
name: "hello",
|
||||
subsection_name: None,
|
||||
},
|
||||
items: vec![
|
||||
Event::Key("a"),
|
||||
Event::Value(Value::from_str("b")),
|
||||
Event::Key("c"),
|
||||
Event::Value(Value::Boolean(Boolean::True(TrueVariant::Implicit))),
|
||||
Event::Key("d"),
|
||||
Event::Value(Value::from_str("\"lol\""))
|
||||
]
|
||||
})
|
||||
)
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn section_single_line() {
|
||||
assert_eq!(
|
||||
section("[hello] c").unwrap(),
|
||||
fully_consumed(Section {
|
||||
section_header: SectionHeader {
|
||||
name: "hello",
|
||||
subsection_name: None,
|
||||
},
|
||||
items: vec![
|
||||
Event::Key("c"),
|
||||
Event::Value(Value::Boolean(Boolean::True(TrueVariant::Implicit)))
|
||||
]
|
||||
})
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn section_very_commented() {
|
||||
let section_data = r#"[hello] ; commentA
|
||||
a = b # commentB
|
||||
; commentC
|
||||
; commentD
|
||||
c = d"#;
|
||||
assert_eq!(
|
||||
section(section_data).unwrap(),
|
||||
fully_consumed(Section {
|
||||
section_header: SectionHeader {
|
||||
name: "hello",
|
||||
subsection_name: None,
|
||||
},
|
||||
items: vec![
|
||||
Event::Comment(Comment {
|
||||
comment_tag: ';',
|
||||
comment: " commentA",
|
||||
}),
|
||||
Event::Key("a"),
|
||||
Event::Value(Value::from_str("b")),
|
||||
Event::Comment(Comment {
|
||||
comment_tag: '#',
|
||||
comment: " commentB",
|
||||
}),
|
||||
Event::Comment(Comment {
|
||||
comment_tag: ';',
|
||||
comment: " commentC",
|
||||
}),
|
||||
Event::Comment(Comment {
|
||||
comment_tag: ';',
|
||||
comment: " commentD",
|
||||
}),
|
||||
Event::Key("c"),
|
||||
Event::Value(Value::from_str("d")),
|
||||
]
|
||||
})
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn complex_continuation() {
|
||||
// This test is absolute hell. Good luck if this fails.
|
||||
assert_eq!(
|
||||
section("[section] a = 1 \"\\\"\\\na ; e \"\\\"\\\nd # \"b\t ; c").unwrap(),
|
||||
fully_consumed(Section {
|
||||
section_header: SectionHeader {
|
||||
name: "section",
|
||||
subsection_name: None,
|
||||
},
|
||||
items: vec![
|
||||
Event::Key("a"),
|
||||
Event::ValueNotDone(r#"1 "\""#),
|
||||
Event::Newline("\n"),
|
||||
Event::ValueNotDone(r#"a ; e "\""#),
|
||||
Event::Newline("\n"),
|
||||
Event::ValueDone("d"),
|
||||
Event::Comment(Comment {
|
||||
comment_tag: '#',
|
||||
comment: " \"b\t ; c"
|
||||
})
|
||||
]
|
||||
})
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn quote_split_over_two_lines() {
|
||||
assert_eq!(
|
||||
section("[section \"a\"] b =\"\\\n;\";a").unwrap(),
|
||||
fully_consumed(Section {
|
||||
section_header: SectionHeader {
|
||||
name: "section",
|
||||
subsection_name: Some("a")
|
||||
},
|
||||
items: vec![
|
||||
Event::Key("b"),
|
||||
Event::ValueNotDone("\""),
|
||||
Event::Newline("\n"),
|
||||
Event::ValueDone(";\""),
|
||||
Event::Comment(Comment {
|
||||
comment: "a",
|
||||
comment_tag: ';'
|
||||
})
|
||||
]
|
||||
})
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
184
src/ser.rs
Normal file
184
src/ser.rs
Normal file
|
|
@ -0,0 +1,184 @@
|
|||
use crate::error::{Error, Result};
|
||||
use ser::SerializeSeq;
|
||||
use serde::{de::MapAccess, ser, Serialize};
|
||||
|
||||
pub struct Serializer {
|
||||
output: String,
|
||||
}
|
||||
|
||||
pub fn to_string<T>(value: &T) -> Result<String>
|
||||
where
|
||||
T: Serialize,
|
||||
{
|
||||
let mut serializer = Serializer {
|
||||
output: String::new(),
|
||||
};
|
||||
value.serialize(&mut serializer)?;
|
||||
Ok(serializer.output)
|
||||
}
|
||||
|
||||
impl<'a> ser::Serializer for &'a mut Serializer {
|
||||
type Ok = ();
|
||||
type Error = Error;
|
||||
type SerializeSeq = Self;
|
||||
type SerializeTuple = Self;
|
||||
type SerializeTupleStruct = Self;
|
||||
type SerializeTupleVariant = Self;
|
||||
type SerializeMap = Self;
|
||||
type SerializeStruct = Self;
|
||||
type SerializeStructVariant = Self;
|
||||
|
||||
fn serialize_bool(self, v: bool) -> Result<Self::Ok> {
|
||||
self.output += if v { "true" } else { "false" };
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn serialize_i8(self, v: i8) -> Result<Self::Ok> {
|
||||
self.serialize_i64(i64::from(v))
|
||||
}
|
||||
|
||||
fn serialize_i16(self, v: i16) -> Result<Self::Ok> {
|
||||
self.serialize_i64(i64::from(v))
|
||||
}
|
||||
|
||||
fn serialize_i32(self, v: i32) -> Result<Self::Ok> {
|
||||
self.serialize_i64(i64::from(v))
|
||||
}
|
||||
|
||||
fn serialize_i64(self, v: i64) -> Result<Self::Ok> {
|
||||
self.output += &v.to_string();
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn serialize_u8(self, v: u8) -> Result<Self::Ok> {
|
||||
self.serialize_u64(u64::from(v))
|
||||
}
|
||||
|
||||
fn serialize_u16(self, v: u16) -> Result<Self::Ok> {
|
||||
self.serialize_u64(u64::from(v))
|
||||
}
|
||||
|
||||
fn serialize_u32(self, v: u32) -> Result<Self::Ok> {
|
||||
self.serialize_u64(u64::from(v))
|
||||
}
|
||||
|
||||
fn serialize_u64(self, v: u64) -> Result<Self::Ok> {
|
||||
self.output += &v.to_string();
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn serialize_f32(self, v: f32) -> Result<Self::Ok> {
|
||||
self.serialize_f64(f64::from(v))
|
||||
}
|
||||
|
||||
fn serialize_f64(self, v: f64) -> Result<Self::Ok> {
|
||||
self.output += &v.to_string();
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn serialize_char(self, v: char) -> Result<Self::Ok> {
|
||||
self.output += &v.to_string();
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn serialize_str(self, v: &str) -> Result<Self::Ok> {
|
||||
self.output += v;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn serialize_bytes(self, v: &[u8]) -> Result<Self::Ok> {
|
||||
todo!()
|
||||
}
|
||||
|
||||
fn serialize_none(self) -> Result<Self::Ok> {
|
||||
todo!()
|
||||
}
|
||||
|
||||
fn serialize_some<T: ?Sized>(self, value: &T) -> Result<Self::Ok>
|
||||
where
|
||||
T: Serialize,
|
||||
{
|
||||
todo!()
|
||||
}
|
||||
|
||||
fn serialize_unit(self) -> Result<Self::Ok> {
|
||||
todo!()
|
||||
}
|
||||
|
||||
fn serialize_unit_struct(self, name: &'static str) -> Result<Self::Ok> {
|
||||
todo!()
|
||||
}
|
||||
|
||||
fn serialize_unit_variant(
|
||||
self,
|
||||
name: &'static str,
|
||||
variant_index: u32,
|
||||
variant: &'static str,
|
||||
) -> Result<Self::Ok> {
|
||||
todo!()
|
||||
}
|
||||
|
||||
fn serialize_newtype_struct<T: ?Sized>(self, name: &'static str, value: &T) -> Result<Self::Ok>
|
||||
where
|
||||
T: Serialize,
|
||||
{
|
||||
todo!()
|
||||
}
|
||||
|
||||
fn serialize_newtype_variant<T: ?Sized>(
|
||||
self,
|
||||
name: &'static str,
|
||||
variant_index: u32,
|
||||
variant: &'static str,
|
||||
value: &T,
|
||||
) -> Result<Self::Ok>
|
||||
where
|
||||
T: Serialize,
|
||||
{
|
||||
todo!()
|
||||
}
|
||||
|
||||
fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq> {
|
||||
todo!()
|
||||
}
|
||||
|
||||
fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple> {
|
||||
self.serialize_seq(Some(len))
|
||||
}
|
||||
|
||||
fn serialize_tuple_struct(
|
||||
self,
|
||||
name: &'static str,
|
||||
len: usize,
|
||||
) -> Result<Self::SerializeTupleStruct> {
|
||||
self.serialize_seq(Some(len))
|
||||
}
|
||||
|
||||
fn serialize_tuple_variant(
|
||||
self,
|
||||
name: &'static str,
|
||||
variant_index: u32,
|
||||
variant: &'static str,
|
||||
len: usize,
|
||||
) -> Result<Self::SerializeTupleVariant> {
|
||||
todo!()
|
||||
}
|
||||
|
||||
fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap> {
|
||||
todo!()
|
||||
}
|
||||
|
||||
fn serialize_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeStruct> {
|
||||
todo!()
|
||||
}
|
||||
|
||||
fn serialize_struct_variant(
|
||||
self,
|
||||
name: &'static str,
|
||||
variant_index: u32,
|
||||
variant: &'static str,
|
||||
len: usize,
|
||||
) -> Result<Self::SerializeStructVariant> {
|
||||
todo!()
|
||||
}
|
||||
}
|
||||
142
src/values.rs
Normal file
142
src/values.rs
Normal file
|
|
@ -0,0 +1,142 @@
|
|||
use std::convert::{Infallible, TryFrom};
|
||||
|
||||
#[derive(PartialEq, Debug)]
|
||||
pub enum Value<'a> {
|
||||
Boolean(Boolean),
|
||||
Integer(Integer),
|
||||
Color(Color),
|
||||
Other(&'a str),
|
||||
}
|
||||
|
||||
impl<'a> Value<'a> {
|
||||
pub fn from_str(s: &'a str) -> Self {
|
||||
Self::Other(s)
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(PartialEq, Debug)]
|
||||
pub enum Boolean {
|
||||
True(TrueVariant),
|
||||
False(FalseVariant),
|
||||
}
|
||||
|
||||
#[derive(PartialEq, Debug)]
|
||||
pub enum TrueVariant {
|
||||
Yes,
|
||||
On,
|
||||
True,
|
||||
One,
|
||||
/// For variables defined without a `= <value>`.
|
||||
Implicit,
|
||||
}
|
||||
|
||||
impl TryFrom<&str> for TrueVariant {
|
||||
type Error = ();
|
||||
|
||||
fn try_from(value: &str) -> Result<Self, Self::Error> {
|
||||
match value {
|
||||
"yes" => Ok(Self::Yes),
|
||||
"on" => Ok(Self::On),
|
||||
"true" => Ok(Self::True),
|
||||
"one" => Ok(Self::One),
|
||||
_ => Err(()),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(PartialEq, Debug)]
|
||||
pub enum FalseVariant {
|
||||
No,
|
||||
Off,
|
||||
False,
|
||||
Zero,
|
||||
EmptyString,
|
||||
}
|
||||
|
||||
impl TryFrom<&str> for FalseVariant {
|
||||
type Error = ();
|
||||
|
||||
fn try_from(value: &str) -> Result<Self, Self::Error> {
|
||||
match value {
|
||||
"no" => Ok(Self::No),
|
||||
"off" => Ok(Self::Off),
|
||||
"false" => Ok(Self::False),
|
||||
"zero" => Ok(Self::Zero),
|
||||
"" => Ok(Self::EmptyString),
|
||||
_ => Err(()),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl TryFrom<&str> for Boolean {
|
||||
type Error = ();
|
||||
|
||||
fn try_from(value: &str) -> Result<Self, Self::Error> {
|
||||
let value = value.to_lowercase();
|
||||
let value = value.as_str();
|
||||
if let Ok(v) = TrueVariant::try_from(value) {
|
||||
return Ok(Self::True(v));
|
||||
}
|
||||
|
||||
if let Ok(v) = FalseVariant::try_from(value) {
|
||||
return Ok(Self::False(v));
|
||||
}
|
||||
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
|
||||
// todo!()
|
||||
#[derive(PartialEq, Debug)]
|
||||
pub struct Integer {}
|
||||
|
||||
#[derive(PartialEq, Debug)]
|
||||
pub struct Color {
|
||||
foreground: ColorValue,
|
||||
background: Option<ColorValue>,
|
||||
attributes: Vec<ColorAttribute>,
|
||||
}
|
||||
|
||||
#[derive(PartialEq, Debug)]
|
||||
enum ColorValue {
|
||||
Normal,
|
||||
Black,
|
||||
BrightBlack,
|
||||
Red,
|
||||
BrightRed,
|
||||
Green,
|
||||
BrightGreen,
|
||||
Yellow,
|
||||
BrightYellow,
|
||||
Blue,
|
||||
BrightBlue,
|
||||
Magenta,
|
||||
BrightMagenta,
|
||||
Cyan,
|
||||
BrightCyan,
|
||||
White,
|
||||
BrightWhite,
|
||||
Ansi(u8),
|
||||
Rgb(u8, u8, u8),
|
||||
}
|
||||
|
||||
#[derive(PartialEq, Debug)]
|
||||
enum ColorAttribute {
|
||||
Bold,
|
||||
NoBold,
|
||||
Dim,
|
||||
NoDim,
|
||||
Ul,
|
||||
NoUl,
|
||||
Blink,
|
||||
NoBlink,
|
||||
Reverse,
|
||||
NoReverse,
|
||||
Italic,
|
||||
NoItalic,
|
||||
Strike,
|
||||
NoStrike,
|
||||
}
|
||||
|
||||
#[derive(PartialEq, Debug)]
|
||||
struct Pathname<'a>(&'a str);
|
||||
Reference in a new issue