protospec-build 0.3.0

One binary format language to rule them all, One binary format language to find them, One binary format language to bring them all and in the darkness bind them.
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use super::*;
pub struct PreludeImportResolver<T: ImportResolver + 'static>(pub T);

impl<T: ImportResolver + 'static> ImportResolver for PreludeImportResolver<T> {
    fn normalize_import(&self, import: &str) -> Result<String> {
        self.0.normalize_import(import)
    }

    fn resolve_import(&self, import: &str) -> Result<Option<String>> {
        self.0.resolve_import(import)
    }

    fn resolve_ffi_transform(&self, transform: &str) -> Result<Option<ForeignTransformObj>> {
        Ok(match transform {
            "base64" => Some(Box::new(Base64Transform)),
            "gzip" => Some(Box::new(GzipTransform)),
            x => self.0.resolve_ffi_transform(x)?,
        })
    }

    fn resolve_ffi_type(&self, import: &str) -> Result<Option<ForeignTypeObj>> {
        Ok(match import {
            "v8" => Some(Box::new(VarInt::new(ScalarType::I8))),
            "v16" => Some(Box::new(VarInt::new(ScalarType::I16))),
            "v32" => Some(Box::new(VarInt::new(ScalarType::I32))),
            "v64" => Some(Box::new(VarInt::new(ScalarType::I64))),
            "v128" => Some(Box::new(VarInt::new(ScalarType::I128))),
            "utf8" => Some(Box::new(Utf8)),
            "utf16" => Some(Box::new(Utf16)),
            x => self.0.resolve_ffi_type(x)?,
        })
    }

    fn resolve_ffi_function(&self, name: &str) -> Result<Option<ForeignFunctionObj>> {
        Ok(match name {
            "len" => Some(Box::new(LenFunction)),
            "pad" => Some(Box::new(PadFunction)),
            x => self.0.resolve_ffi_function(x)?,
        })
    }
}