Struct LanguageStandardSettings 

pub struct LanguageStandardSettings {
    pub c_standard: Option<StandardDeclaration<CStandard>>,
    pub cxx_standard: Option<StandardDeclaration<CxxStandard>>,
    pub interface_c_standard: Option<StandardDeclaration<InterfaceRequirement<CStandard>>>,
    pub interface_cxx_standard: Option<StandardDeclaration<InterfaceRequirement<CxxStandard>>>,
    pub gnu_extensions: Option<bool>,
}

The language fields shared by [package] and [target.<name>]: the four standard fields (c-standard / cxx-standard / interface-c-standard / interface-cxx-standard) plus the gnu-extensions boolean. At [package] level each standard field may also be the { workspace = true } opt-in marker; target-level fields are always Declared (the parser rejects markers there). gnu-extensions is a plain boolean (no marker form): target level overrides package level, defaulting to false. It selects GNU-extension compiler flag spellings only and never participates in interface compatibility.

Fields

c_standard: Option<StandardDeclaration<CStandard>>

cxx_standard: Option<StandardDeclaration<CxxStandard>>

interface_c_standard: Option<StandardDeclaration<InterfaceRequirement<CStandard>>>

interface_cxx_standard: Option<StandardDeclaration<InterfaceRequirement<CxxStandard>>>

gnu_extensions: Option<bool>

Implementations

impl LanguageStandardSettings

pub fn is_empty(&self) -> bool

pub fn c_standard_value(&self) -> Option<CStandard>

Resolved C implementation standard, when declared or inherited.

pub fn cxx_standard_value(&self) -> Option<CxxStandard>

Resolved C++ implementation standard, when declared or inherited.

pub fn interface_c_standard_value( &self, ) -> Option<InterfaceRequirement<CStandard>>

Resolved C interface requirement, when declared or inherited.

pub fn interface_cxx_standard_value( &self, ) -> Option<InterfaceRequirement<CxxStandard>>

Resolved C++ interface requirement, when declared or inherited.

pub fn workspace_marker_field(&self) -> Option<&'static str>

First field carrying the unresolved { workspace = true } marker, for error reporting.

Trait Implementations

impl Clone for LanguageStandardSettings

fn clone(&self) -> LanguageStandardSettings

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for LanguageStandardSettings

impl Debug for LanguageStandardSettings

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for LanguageStandardSettings

fn default() -> LanguageStandardSettings

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for LanguageStandardSettings

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for LanguageStandardSettings

impl PartialEq for LanguageStandardSettings

fn eq(&self, other: &LanguageStandardSettings) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for LanguageStandardSettings

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for LanguageStandardSettings