andr3/zls
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

explain how AstGen will diverge from zig codebase

Browse Source
This commit is contained in:
Techarix 2023-02-14 22:53:05 +01:00 committed by Techatrix
parent 4215edbc33
commit 018569888f
2 changed files with 13 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/stage2/AstGen.zig
View File

@ -1,4 +1,11 @@
//! Ingests an AST and produces ZIR code.
//!
//! TODO
//! In contrast to the upstream zig codebase, generating Zir
//! will not fail after encountering compile errors but will
//! instead try to ignore or patch these errors.
//! If this is not possible, an `unknown` instructions will be emitted.
const AstGen = @This();
const std = @import("std");

11
src/stage2/Zir.zig
View File

@ -2065,10 +2065,6 @@ pub const Inst = struct {
/// The tag type is specified so that it is safe to bitcast between `[]u32`
/// and `[]Ref`.
pub const Ref = enum(u32) {
/// This Ref does not correspond to any ZIR instruction or constant
/// value and may instead be used as a sentinel to indicate null.
none,
u1_type,
u8_type,
i8_type,
@ -2130,6 +2126,7 @@ pub const Inst = struct {
const_slice_u8_type,
anyerror_void_error_union_type,
generic_poison_type,
unknown_type,
/// `undefined` (untyped)
undef,
@ -2160,9 +2157,13 @@ pub const Inst = struct {
/// Used for generic parameters where the type and value
/// is not known until generic function instantiation.
generic_poison,
unknown,
ref_start_index,
/// This Ref does not correspond to any ZIR instruction or constant
/// value and may instead be used as a sentinel to indicate null.
none = std.math.maxInt(u32),
_,
};
@ -3839,7 +3840,7 @@ pub fn getFnInfo(zir: Zir, fn_inst: Inst.Index) FnInfo {
};
}
const ref_start_index: u32 = @enumToInt(Inst.Ref.ref_start_index);
pub const ref_start_index: u32 = @enumToInt(Inst.Ref.ref_start_index);
pub fn indexToRef(inst: Inst.Index) Inst.Ref {
return @intToEnum(Inst.Ref, ref_start_index + inst);