forked from M-Labs/nac3
core/model: add CSlice & Exception models
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@ -44,6 +44,7 @@ pub mod llvm_intrinsics;
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pub mod model;
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pub mod numpy;
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pub mod stmt;
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pub mod structs;
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#[cfg(test)]
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mod test;
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50
nac3core/src/codegen/structs/cslice.rs
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50
nac3core/src/codegen/structs/cslice.rs
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@ -0,0 +1,50 @@
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use crate::codegen::{model::*, CodeGenContext};
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/// Fields of [`CSlice<'ctx>`].
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pub struct CSliceFields<'ctx> {
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/// Pointer to the data.
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pub base: Field<PointerModel<ByteModel>>,
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/// Number of bytes of the data.
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pub len: Field<SizeTModel<'ctx>>,
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}
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/// See <https://crates.io/crates/cslice>.
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///
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/// Additionally, see <https://github.com/m-labs/artiq/blob/b0d2705c385f64b6e6711c1726cd9178f40b598e/artiq/firmware/libeh/eh_artiq.rs>)
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/// for ARTIQ-specific notes.
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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pub struct CSlice<'ctx> {
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pub sizet: SizeTModel<'ctx>,
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}
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impl<'ctx> StructKind<'ctx> for CSlice<'ctx> {
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type Fields = CSliceFields<'ctx>;
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fn struct_name(&self) -> &'static str {
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"CSlice"
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}
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fn build_fields(&self, builder: &mut FieldBuilder<'ctx>) -> Self::Fields {
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Self::Fields {
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base: builder.add_field_auto("content"),
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len: builder.add_field("length", self.sizet),
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}
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}
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}
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impl<'ctx> StructModel<CSlice<'ctx>> {
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/// Create a [`CSlice`].
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///
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/// `base` and `len` must be LLVM global constants.
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pub fn create_const(
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&self,
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ctx: &CodeGenContext<'ctx, '_>,
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base: Pointer<'ctx, ByteModel>,
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len: SizeT<'ctx>,
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) -> Struct<'ctx, CSlice<'ctx>> {
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let value = self
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.get_struct_type(ctx.ctx)
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.const_named_struct(&[base.value.into(), len.value.into()]);
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self.believe_value(value)
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}
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}
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78
nac3core/src/codegen/structs/exception.rs
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78
nac3core/src/codegen/structs/exception.rs
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@ -0,0 +1,78 @@
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use crate::codegen::model::*;
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use super::cslice::CSlice;
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/// The LLVM int type of an Exception ID.
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pub type ExceptionId = Int32;
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/// Fields of [`Exception<'ctx>`]
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///
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/// The definition came from `pub struct Exception<'a>` in
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/// <https://github.com/m-labs/artiq/blob/master/artiq/firmware/libeh/eh_artiq.rs>.
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pub struct ExceptionFields<'ctx> {
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/// nac3core's ID of the exception
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pub exception_id: Field<NIntModel<ExceptionId>>,
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/// The name of the file this `Exception` was raised in.
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pub filename: Field<StructModel<CSlice<'ctx>>>,
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/// The line number in the file this `Exception` was raised in.
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pub line: Field<NIntModel<Int32>>,
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/// The column number in the file this `Exception` was raised in.
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pub column: Field<NIntModel<Int32>>,
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/// The name of the Python function this `Exception` was raised in.
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pub function_name: Field<StructModel<CSlice<'ctx>>>,
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/// The message of this Exception.
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///
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/// The message can optionally contain integer parameters `{0}`, `{1}`, and `{2}` in its string,
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/// where they will be substituted by `params[0]`, `params[1]`, and `params[2]` respectively (as `int64_t`s).
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/// Here is an example:
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///
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/// ```ignore
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/// "Index {0} is out of bounds! List only has {1} element(s)."
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/// ```
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///
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/// In this case, `params[0]` and `params[1]` must be specified, and `params[2]` is ***unused***.
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/// Having only 3 parameters is a constraint in ARTIQ.
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pub message: Field<StructModel<CSlice<'ctx>>>,
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pub params: [Field<NIntModel<Int64>>; 3],
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}
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/// nac3core & ARTIQ's Exception
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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pub struct Exception<'ctx> {
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/// The `SizeT` type of this string.
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pub sizet: SizeTModel<'ctx>,
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}
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impl<'ctx> StructKind<'ctx> for Exception<'ctx> {
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type Fields = ExceptionFields<'ctx>;
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fn struct_name(&self) -> &'static str {
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"Exception"
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}
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fn build_fields(&self, builder: &mut FieldBuilder<'ctx>) -> Self::Fields {
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let str = StructModel(CSlice { sizet: self.sizet });
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let exception_id = builder.add_field_auto("exception_id");
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let file_name = builder.add_field("file_name", str);
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let line = builder.add_field_auto("line");
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let column = builder.add_field_auto("column");
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let function_name = builder.add_field("function_name", str);
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let message = builder.add_field("message", str);
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let params = [
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builder.add_field_auto("param0"),
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builder.add_field_auto("param1"),
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builder.add_field_auto("param2"),
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];
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Self::Fields {
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exception_id,
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filename: file_name,
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line,
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column,
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function_name,
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message,
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params,
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}
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}
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}
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2
nac3core/src/codegen/structs/mod.rs
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2
nac3core/src/codegen/structs/mod.rs
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@ -0,0 +1,2 @@
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pub mod cslice;
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pub mod exception;
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