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192 changes: 192 additions & 0 deletions
192
naga/src/front/wgsl/parse/directive/language_extension.rs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,192 @@ | ||
| #[cfg(test)] | ||
| use strum::IntoEnumIterator; | ||
|
|
||
| #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)] | ||
| pub(crate) enum LanguageExtension { | ||
| #[allow(unused)] | ||
| Implemented(ImplementedLanguageExtension), | ||
| Unimplemented(UnimplementedLanguageExtension), | ||
| } | ||
|
|
||
| impl LanguageExtension { | ||
| #[cfg(test)] | ||
| const NAGA_REPLACE_ME_WITH_A_REAL_EXTENSION_PLZ: &'static str = | ||
| "naga_replace_me_with_a_real_extension_plz"; | ||
| const READONLY_AND_READWRITE_STORAGE_TEXTURES: &'static str = | ||
| "readonly_and_readwrite_storage_textures"; | ||
| const PACKED4X8_INTEGER_DOT_PRODUCT: &'static str = "packed_4x8_integer_dot_product"; | ||
| const UNRESTRICTED_POINTER_PARAMETERS: &'static str = "unrestricted_pointer_parameters"; | ||
| const POINTER_COMPOSITE_ACCESS: &'static str = "pointer_composite_access"; | ||
|
|
||
| pub fn from_ident(s: &str) -> Option<Self> { | ||
| Some(match s { | ||
| #[cfg(test)] | ||
| Self::NAGA_REPLACE_ME_WITH_A_REAL_EXTENSION_PLZ => { | ||
| Self::Implemented(ImplementedLanguageExtension::NagaReplaceMeWithARealExtensionPlz) | ||
| } | ||
| Self::READONLY_AND_READWRITE_STORAGE_TEXTURES => Self::Unimplemented( | ||
| UnimplementedLanguageExtension::ReadOnlyAndReadWriteStorageTextures, | ||
| ), | ||
| Self::PACKED4X8_INTEGER_DOT_PRODUCT => { | ||
| Self::Unimplemented(UnimplementedLanguageExtension::Packed4x8IntegerDotProduct) | ||
| } | ||
| Self::UNRESTRICTED_POINTER_PARAMETERS => { | ||
| Self::Unimplemented(UnimplementedLanguageExtension::UnrestrictedPointerParameters) | ||
| } | ||
| Self::POINTER_COMPOSITE_ACCESS => { | ||
| Self::Unimplemented(UnimplementedLanguageExtension::PointerCompositeAccess) | ||
| } | ||
| _ => return None, | ||
| }) | ||
| } | ||
|
|
||
| pub fn to_ident(self) -> &'static str { | ||
| match self { | ||
| Self::Implemented(kind) => match kind { | ||
| #[cfg(test)] | ||
| ImplementedLanguageExtension::NagaReplaceMeWithARealExtensionPlz => { | ||
| Self::NAGA_REPLACE_ME_WITH_A_REAL_EXTENSION_PLZ | ||
| } | ||
| }, | ||
| Self::Unimplemented(kind) => match kind { | ||
| UnimplementedLanguageExtension::ReadOnlyAndReadWriteStorageTextures => { | ||
| Self::READONLY_AND_READWRITE_STORAGE_TEXTURES | ||
| } | ||
| UnimplementedLanguageExtension::Packed4x8IntegerDotProduct => { | ||
| Self::PACKED4X8_INTEGER_DOT_PRODUCT | ||
| } | ||
| UnimplementedLanguageExtension::UnrestrictedPointerParameters => { | ||
| Self::UNRESTRICTED_POINTER_PARAMETERS | ||
| } | ||
| UnimplementedLanguageExtension::PointerCompositeAccess => { | ||
| Self::POINTER_COMPOSITE_ACCESS | ||
| } | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| fn iter() -> impl Iterator<Item = Self> { | ||
| let implemented = ImplementedLanguageExtension::iter().map(Self::Implemented); | ||
| let unimplemented = UnimplementedLanguageExtension::iter().map(Self::Unimplemented); | ||
| implemented.chain(unimplemented) | ||
| } | ||
| } | ||
|
|
||
| #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)] | ||
| #[cfg_attr(test, derive(strum::EnumIter))] | ||
| pub(crate) enum ImplementedLanguageExtension { | ||
| #[cfg(test)] | ||
| NagaReplaceMeWithARealExtensionPlz, | ||
| } | ||
|
|
||
| #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)] | ||
| #[cfg_attr(test, derive(strum::EnumIter))] | ||
| pub(crate) enum UnimplementedLanguageExtension { | ||
| ReadOnlyAndReadWriteStorageTextures, | ||
| Packed4x8IntegerDotProduct, | ||
| UnrestrictedPointerParameters, | ||
| PointerCompositeAccess, | ||
| } | ||
|
|
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| impl UnimplementedLanguageExtension { | ||
| pub(crate) fn tracking_issue_num(self) -> u16 { | ||
| match self { | ||
| Self::ReadOnlyAndReadWriteStorageTextures => todo!(), | ||
| Self::Packed4x8IntegerDotProduct => todo!(), | ||
| Self::UnrestrictedPointerParameters => todo!(), | ||
| Self::PointerCompositeAccess => todo!(), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| mod test { | ||
| use itertools::Itertools; | ||
| use strum::IntoEnumIterator; | ||
|
|
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| use crate::front::wgsl::assert_parse_err; | ||
|
|
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| use super::{ImplementedLanguageExtension, LanguageExtension}; | ||
|
|
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| #[test] | ||
| fn implemented() { | ||
| #[derive(Clone, Debug, strum::EnumIter)] | ||
| enum Count { | ||
| ByItself, | ||
| WithOther, | ||
| } | ||
|
|
||
| #[derive(Clone, Debug, strum::EnumIter)] | ||
| enum Separation { | ||
| SameLineNoSpace, | ||
| SameLine, | ||
| MultiLine, | ||
| } | ||
|
|
||
| #[derive(Clone, Debug, strum::EnumIter)] | ||
| enum TrailingComma { | ||
| Yes, | ||
| No, | ||
| } | ||
|
|
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| #[track_caller] | ||
| fn test_requires(before: &str, idents: &[&str], ident_sep: &str, after: &str) { | ||
| let ident_list = idents.join(ident_sep); | ||
| let shader = format!("requires{before}{ident_list}{after};"); | ||
| let expected_msg = "".to_string(); | ||
| assert_parse_err(&shader, &expected_msg); | ||
| } | ||
|
|
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| let implemented_extensions = | ||
| ImplementedLanguageExtension::iter().map(LanguageExtension::Implemented); | ||
|
|
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| let iter = implemented_extensions | ||
| .clone() | ||
| .cartesian_product(Count::iter()) | ||
| .cartesian_product(Separation::iter()) | ||
| .cartesian_product(TrailingComma::iter()); | ||
| for (((extension, count), separation), trailing_comma) in iter { | ||
| let before; | ||
| let ident_sep; | ||
| match separation { | ||
| Separation::SameLine => { | ||
| before = " "; | ||
| ident_sep = ", "; | ||
| } | ||
| Separation::SameLineNoSpace => { | ||
| before = " "; | ||
| ident_sep = ","; | ||
| } | ||
| Separation::MultiLine => { | ||
| before = "\n "; | ||
| ident_sep = ",\n "; | ||
| } | ||
| } | ||
| let after = match trailing_comma { | ||
| TrailingComma::Yes => ident_sep, | ||
| TrailingComma::No => before, | ||
| }; | ||
| match count { | ||
| Count::ByItself => test_requires(before, &[extension.to_ident()], ident_sep, after), | ||
| Count::WithOther => { | ||
| for other_extension in implemented_extensions.clone() { | ||
| for list in [[extension, other_extension], [other_extension, extension]] { | ||
| let list = list.map(|e| e.to_ident()); | ||
| test_requires(before, &list, ident_sep, after); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
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| #[test] | ||
| fn unimplemented() {} | ||
|
|
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| #[test] | ||
| fn unknown() {} | ||
|
|
||
| #[test] | ||
| fn malformed() {} | ||
| } |
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