Rustdoc-Json: Add enum discriminant

5 files changed, 119 insertions, 0 deletions

diff --git a/src/test/rustdoc-json/enums/discriminant/basic.rs b/src/test/rustdoc-json/enums/discriminant/basic.rs
new file mode 100644
index 00000000000..8c221615aa7
--- /dev/null
+++ b/src/test/rustdoc-json/enums/discriminant/basic.rs
@@ -0,0 +1,12 @@
+#[repr(i8)]
+pub enum Ordering {
+    // @is "$.index[*][?(@.name=='Less')].inner.variant_inner.expr" '"-1"'
+    // @is "$.index[*][?(@.name=='Less')].inner.variant_inner.value" '"-1"'
+    Less = -1,
+    // @is "$.index[*][?(@.name=='Equal')].inner.variant_inner.expr" '"0"'
+    // @is "$.index[*][?(@.name=='Equal')].inner.variant_inner.value" '"0"'
+    Equal = 0,
+    // @is "$.index[*][?(@.name=='Greater')].inner.variant_inner.expr" '"1"'
+    // @is "$.index[*][?(@.name=='Greater')].inner.variant_inner.value" '"1"'
+    Greater = 1,
+}
diff --git a/src/test/rustdoc-json/enums/discriminant/expr.rs b/src/test/rustdoc-json/enums/discriminant/expr.rs
new file mode 100644
index 00000000000..235b0b47381
--- /dev/null
+++ b/src/test/rustdoc-json/enums/discriminant/expr.rs
@@ -0,0 +1,39 @@
+pub enum Foo {
+    // @is "$.index[*][?(@.name=='Addition')].inner.variant_inner.value" '"0"'
+    // @is "$.index[*][?(@.name=='Addition')].inner.variant_inner.expr" '"{ _ }"'
+    Addition = 0 + 0,
+    // @is "$.index[*][?(@.name=='Bin')].inner.variant_inner.value" '"1"'
+    // @is "$.index[*][?(@.name=='Bin')].inner.variant_inner.expr" '"0b1"'
+    Bin = 0b1,
+    // @is "$.index[*][?(@.name=='Oct')].inner.variant_inner.value" '"2"'
+    // @is "$.index[*][?(@.name=='Oct')].inner.variant_inner.expr" '"0o2"'
+    Oct = 0o2,
+    // @is "$.index[*][?(@.name=='PubConst')].inner.variant_inner.value" '"3"'
+    // @is "$.index[*][?(@.name=='PubConst')].inner.variant_inner.expr" '"THREE"'
+    PubConst = THREE,
+    // @is "$.index[*][?(@.name=='Hex')].inner.variant_inner.value" '"4"'
+    // @is "$.index[*][?(@.name=='Hex')].inner.variant_inner.expr" '"0x4"'
+    Hex = 0x4,
+    // @is "$.index[*][?(@.name=='Cast')].inner.variant_inner.value" '"5"'
+    // @is "$.index[*][?(@.name=='Cast')].inner.variant_inner.expr" '"{ _ }"'
+    Cast = 5 as isize,
+    // @is "$.index[*][?(@.name=='PubCall')].inner.variant_inner.value" '"6"'
+    // @is "$.index[*][?(@.name=='PubCall')].inner.variant_inner.expr" '"{ _ }"'
+    PubCall = six(),
+    // @is "$.index[*][?(@.name=='PrivCall')].inner.variant_inner.value" '"7"'
+    // @is "$.index[*][?(@.name=='PrivCall')].inner.variant_inner.expr" '"{ _ }"'
+    PrivCall = seven(),
+    // @is "$.index[*][?(@.name=='PrivConst')].inner.variant_inner.value" '"8"'
+    // @is "$.index[*][?(@.name=='PrivConst')].inner.variant_inner.expr" '"EIGHT"'
+    PrivConst = EIGHT,
+}
+
+pub const THREE: isize = 3;
+const EIGHT: isize = 8;
+
+pub const fn six() -> isize {
+    6
+}
+const fn seven() -> isize {
+    7
+}
diff --git a/src/test/rustdoc-json/enums/discriminant/limits.rs b/src/test/rustdoc-json/enums/discriminant/limits.rs
new file mode 100644
index 00000000000..8df73d78d23
--- /dev/null
+++ b/src/test/rustdoc-json/enums/discriminant/limits.rs
@@ -0,0 +1,43 @@
+// ignore-tidy-linelength
+#![feature(repr128)]
+#![allow(incomplete_features)]
+
+#[repr(u64)]
+pub enum U64 {
+    // @is "$.index[*][?(@.name=='U64Min')].inner.variant_inner.value" '"0"'
+    // @is "$.index[*][?(@.name=='U64Min')].inner.variant_inner.expr" '"u64::MIN"'
+    U64Min = u64::MIN,
+    // @is "$.index[*][?(@.name=='U64Max')].inner.variant_inner.value" '"18446744073709551615"'
+    // @is "$.index[*][?(@.name=='U64Max')].inner.variant_inner.expr" '"u64::MAX"'
+    U64Max = u64::MAX,
+}
+
+#[repr(i64)]
+pub enum I64 {
+    // @is "$.index[*][?(@.name=='I64Min')].inner.variant_inner.value" '"-9223372036854775808"'
+    // @is "$.index[*][?(@.name=='I64Min')].inner.variant_inner.expr" '"i64::MIN"'
+    I64Min = i64::MIN,
+    // @is "$.index[*][?(@.name=='I64Max')].inner.variant_inner.value" '"9223372036854775807"'
+    // @is "$.index[*][?(@.name=='I64Max')].inner.variant_inner.expr" '"i64::MAX"'
+    I64Max = i64::MAX,
+}
+
+#[repr(u128)]
+pub enum U128 {
+    // @is "$.index[*][?(@.name=='U128Min')].inner.variant_inner.value" '"0"'
+    // @is "$.index[*][?(@.name=='U128Min')].inner.variant_inner.expr" '"u128::MIN"'
+    U128Min = u128::MIN,
+    // @is "$.index[*][?(@.name=='U128Max')].inner.variant_inner.value" '"340282366920938463463374607431768211455"'
+    // @is "$.index[*][?(@.name=='U128Max')].inner.variant_inner.expr" '"u128::MAX"'
+    U128Max = u128::MAX,
+}
+
+#[repr(i128)]
+pub enum I128 {
+    // @is "$.index[*][?(@.name=='I128Min')].inner.variant_inner.value" '"-170141183460469231731687303715884105728"'
+    // @is "$.index[*][?(@.name=='I128Min')].inner.variant_inner.expr" '"i128::MIN"'
+    I128Min = i128::MIN,
+    // @is "$.index[*][?(@.name=='I128Max')].inner.variant_inner.value" '"170141183460469231731687303715884105727"'
+    // @is "$.index[*][?(@.name=='I128Max')].inner.variant_inner.expr" '"i128::MAX"'
+    I128Max = i128::MAX,
+}
diff --git a/src/test/rustdoc-json/enums/discriminant/num_underscore_and_suffix.rs b/src/test/rustdoc-json/enums/discriminant/num_underscore_and_suffix.rs
new file mode 100644
index 00000000000..3417baa0760
--- /dev/null
+++ b/src/test/rustdoc-json/enums/discriminant/num_underscore_and_suffix.rs
@@ -0,0 +1,15 @@
+#[repr(u32)]
+pub enum Foo {
+    // @is "$.index[*][?(@.name=='Basic')].inner.variant_inner.value" '"0"'
+    // @is "$.index[*][?(@.name=='Basic')].inner.variant_inner.expr" '"0"'
+    Basic = 0,
+    // @is "$.index[*][?(@.name=='Suffix')].inner.variant_inner.value" '"10"'
+    // @is "$.index[*][?(@.name=='Suffix')].inner.variant_inner.expr" '"10u32"'
+    Suffix = 10u32,
+    // @is "$.index[*][?(@.name=='Underscore')].inner.variant_inner.value" '"100"'
+    // @is "$.index[*][?(@.name=='Underscore')].inner.variant_inner.expr" '"1_0_0"'
+    Underscore = 1_0_0,
+    // @is "$.index[*][?(@.name=='SuffixUnderscore')].inner.variant_inner.value" '"1000"'
+    // @is "$.index[*][?(@.name=='SuffixUnderscore')].inner.variant_inner.expr" '"1_0_0_0u32"'
+    SuffixUnderscore = 1_0_0_0u32,
+}
diff --git a/src/test/rustdoc-json/enums/discriminant/only_some_have_discriminant.rs b/src/test/rustdoc-json/enums/discriminant/only_some_have_discriminant.rs
new file mode 100644
index 00000000000..6af944a2219
--- /dev/null
+++ b/src/test/rustdoc-json/enums/discriminant/only_some_have_discriminant.rs
@@ -0,0 +1,10 @@
+pub enum Foo {
+    // @is "$.index[*][?(@.name=='Has')].inner.variant_inner" '{"expr":"0", "value":"0"}'
+    Has = 0,
+    // @is "$.index[*][?(@.name=='Doesnt')].inner.variant_inner" null
+    Doesnt,
+    // @is "$.index[*][?(@.name=='AlsoDoesnt')].inner.variant_inner" null
+    AlsoDoesnt,
+    // @is "$.index[*][?(@.name=='AlsoHas')].inner.variant_inner" '{"expr":"44", "value":"44"}'
+    AlsoHas = 44,
+}