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stage2: array types

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Vexu
2020-08-18 12:24:23 +03:00
parent 3eb8f7be10
commit 7c15c9428e
5 changed files with 255 additions and 50 deletions
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67
src-self-hosted/Module.zig
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@@ -2902,7 +2902,7 @@ pub fn floatSub(self: *Module, scope: *Scope, float_type: Type, src: usize, lhs:
return Value.initPayload(val_payload);
}
pub fn singlePtrType(self: *Module, scope: *Scope, src: usize, mutable: bool, elem_ty: Type) error{OutOfMemory}!Type {
pub fn singlePtrType(self: *Module, scope: *Scope, src: usize, mutable: bool, elem_ty: Type) Allocator.Error!Type {
const type_payload = try scope.arena().create(Type.Payload.Pointer);
type_payload.* = .{
.base = .{ .tag = if (mutable) .single_mut_pointer else .single_const_pointer },
@@ -2911,6 +2911,71 @@ pub fn singlePtrType(self: *Module, scope: *Scope, src: usize, mutable: bool, el
return Type.initPayload(&type_payload.base);
}
pub fn optionalType(self: *Module, scope: *Scope, child_type: Type) Allocator.Error!Type {
return Type.initPayload(switch (child_type.tag()) {
.single_const_pointer => blk: {
const payload = try scope.arena().create(Type.Payload.Pointer);
payload.* = .{
.base = .{ .tag = .optional_single_const_pointer },
.pointee_type = child_type.elemType(),
};
break :blk &payload.base;
},
.single_mut_pointer => blk: {
const payload = try scope.arena().create(Type.Payload.Pointer);
payload.* = .{
.base = .{ .tag = .optional_single_mut_pointer },
.pointee_type = child_type.elemType(),
};
break :blk &payload.base;
},
else => blk: {
const payload = try scope.arena().create(Type.Payload.Optional);
payload.* = .{
.child_type = child_type,
};
break :blk &payload.base;
},
});
}
pub fn arrayType(self: *Module, scope: *Scope, len: u64, sentinel: ?Value, elem_type: Type) Allocator.Error!Type {
if (elem_type.eql(Type.initTag(.u8))) {
if (sentinel) |some| {
if (some.eql(Value.initTag(.zero))) {
const payload = try scope.arena().create(Type.Payload.Array_u8_Sentinel0);
payload.* = .{
.len = len,
};
return Type.initPayload(&payload.base);
}
} else {
const payload = try scope.arena().create(Type.Payload.Array_u8);
payload.* = .{
.len = len,
};
return Type.initPayload(&payload.base);
}
}
if (sentinel) |some| {
const payload = try scope.arena().create(Type.Payload.ArraySentinel);
payload.* = .{
.len = len,
.sentinel = some,
.elem_type = elem_type,
};
return Type.initPayload(&payload.base);
}
const payload = try scope.arena().create(Type.Payload.Array);
payload.* = .{
.len = len,
.elem_type = elem_type,
};
return Type.initPayload(&payload.base);
}
pub fn dumpInst(self: *Module, scope: *Scope, inst: *Inst) void {
const zir_module = scope.namespace();
const source = zir_module.getSource(self) catch @panic("dumpInst failed to get source");