saola-schema-ast 0.1.0

Abstract Syntax Tree representation for Prisma Schema Language
Documentation 
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use std::sync::Arc;

use serde::{Deserialize, Deserializer};

/// A Prisma schema document.
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
pub struct SourceFile {
    contents: Contents,
}

impl<'de> Deserialize<'de> for SourceFile {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: Deserializer<'de>,
    {
        let s: String = serde::de::Deserialize::deserialize(deserializer)?;
        Ok(s.into())
    }
}

impl Default for SourceFile {
    fn default() -> Self {
        Self {
            contents: Contents::Static(""),
        }
    }
}

impl SourceFile {
    pub fn new_static(content: &'static str) -> Self {
        Self {
            contents: Contents::Static(content),
        }
    }

    pub fn new_allocated(s: Arc<str>) -> Self {
        Self {
            contents: Contents::Allocated(s),
        }
    }

    pub fn as_str(&self) -> &str {
        match self.contents {
            Contents::Static(s) => s,
            Contents::Allocated(ref s) => s,
        }
    }
}

impl From<&str> for SourceFile {
    fn from(s: &str) -> Self {
        Self::new_allocated(Arc::from(s.to_owned().into_boxed_str()))
    }
}

impl From<&String> for SourceFile {
    fn from(s: &String) -> Self {
        Self::new_allocated(Arc::from(s.to_owned().into_boxed_str()))
    }
}

impl From<Box<str>> for SourceFile {
    fn from(s: Box<str>) -> Self {
        Self::new_allocated(Arc::from(s))
    }
}

impl From<Arc<str>> for SourceFile {
    fn from(s: Arc<str>) -> Self {
        Self::new_allocated(s)
    }
}

impl From<String> for SourceFile {
    fn from(s: String) -> Self {
        Self::new_allocated(Arc::from(s.into_boxed_str()))
    }
}

#[derive(Debug, Clone)]
enum Contents {
    Static(&'static str),
    Allocated(Arc<str>),
}

impl std::hash::Hash for Contents {
    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
        match self {
            Contents::Static(s) => (*s).hash(state),
            Contents::Allocated(s) => {
                let s: &str = s;

                s.hash(state);
            }
        }
    }
}

impl Eq for Contents {}

impl PartialEq for Contents {
    fn eq(&self, other: &Self) -> bool {
        match (self, other) {
            (Contents::Static(l), Contents::Static(r)) => l == r,
            (Contents::Allocated(l), Contents::Allocated(r)) => l == r,
            (Contents::Static(l), Contents::Allocated(r)) => *l == &**r,
            (Contents::Allocated(l), Contents::Static(r)) => &**l == *r,
        }
    }
}