mirror of
https://github.com/fluencelabs/parity-wasm
synced 2025-06-24 12:12:05 +00:00
101 lines
2.8 KiB
Rust
101 lines
2.8 KiB
Rust
use std::io;
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use super::{Deserialize, Serialize, Error, VarUint7, VarUint32};
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/// Internal reference of the exported entry.
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#[derive(Debug, Clone, Copy)]
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pub enum Internal {
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/// Function reference.
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Function(u32),
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/// Table reference.
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Table(u32),
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/// Memory reference.
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Memory(u32),
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/// Global reference.
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Global(u32),
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}
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impl Deserialize for Internal {
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type Error = Error;
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fn deserialize<R: io::Read>(reader: &mut R) -> Result<Self, Self::Error> {
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let kind = VarUint7::deserialize(reader)?;
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match kind.into() {
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0x00 => Ok(Internal::Function(VarUint32::deserialize(reader)?.into())),
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0x01 => Ok(Internal::Table(VarUint32::deserialize(reader)?.into())),
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0x02 => Ok(Internal::Memory(VarUint32::deserialize(reader)?.into())),
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0x03 => Ok(Internal::Global(VarUint32::deserialize(reader)?.into())),
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_ => Err(Error::UnknownInternalKind(kind.into())),
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}
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}
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}
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impl Serialize for Internal {
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type Error = Error;
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fn serialize<W: io::Write>(self, writer: &mut W) -> Result<(), Self::Error> {
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let (bt, arg) = match self {
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Internal::Function(arg) => (0x00, arg),
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Internal::Table(arg) => (0x01, arg),
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Internal::Memory(arg) => (0x02, arg),
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Internal::Global(arg) => (0x03, arg),
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};
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VarUint7::from(bt).serialize(writer)?;
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VarUint32::from(arg).serialize(writer)?;
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Ok(())
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}
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}
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/// Export entry.
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#[derive(Debug)]
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pub struct ExportEntry {
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field_str: String,
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internal: Internal,
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}
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impl ExportEntry {
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/// New export entry
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pub fn new(field: String, internal: Internal) -> Self {
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ExportEntry {
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field_str: field,
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internal: internal
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}
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}
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/// Public name
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pub fn field(&self) -> &str { &self.field_str }
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/// Public name (mutable)
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pub fn field_mut(&mut self) -> &mut str { &mut self.field_str }
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/// Internal reference of the export entry.
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pub fn internal(&self) -> &Internal { &self.internal }
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/// Internal reference of the export entry (mutable).
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pub fn internal_mut(&mut self) -> &mut Internal { &mut self.internal }
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}
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impl Deserialize for ExportEntry {
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type Error = Error;
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fn deserialize<R: io::Read>(reader: &mut R) -> Result<Self, Self::Error> {
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let field_str = String::deserialize(reader)?;
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let internal = Internal::deserialize(reader)?;
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Ok(ExportEntry {
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field_str: field_str,
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internal: internal,
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})
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}
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}
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impl Serialize for ExportEntry {
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type Error = Error;
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fn serialize<W: io::Write>(self, writer: &mut W) -> Result<(), Self::Error> {
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self.field_str.serialize(writer)?;
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self.internal.serialize(writer)?;
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Ok(())
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}
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} |