Enum AstConstantValue

pub enum AstConstantValue {
    Integer(AstConstantInteger),
    Fp(AstConstantFp),
    Pointer(AstType, AstAddressConstant),
    String {
        ascii: Vec<String>,
    },
}

A constant value that was either parsed from a literal or was evaluated from a constant expression.

Variants

Integer(AstConstantInteger)

A constant integer value.

Fp(AstConstantFp)

Pointer(AstType, AstAddressConstant)

A pointer address constant from evaluating a static storage pointer initializer. See AstAddressConstant for more examples.

static int *p = 0;
static char *str = "hello";

String

A constant string value from evaluating a static storage character array initializer.

static char text[4] = "abcd";

Fields

ascii: Vec<String>

Implementations

impl AstConstantValue

pub fn get_ast_type(&self) -> AstType

Gets the AST type of the constant value.

pub fn is_pointer_address_constant(&self) -> bool

Is the constant value a pointer address constant?

pub fn is_zero(&self) -> bool

Is the constant value equal to zero?

pub fn has_negative_value(&self) -> bool

Is the constant value below zero? Always false for unsigned types.

pub fn cast_to(self, cast_to_type: &AstType) -> Self

Converts the constant value to a different type, performing the appropriate cast for C.

Trait Implementations

impl Clone for AstConstantValue

fn clone(&self) -> AstConstantValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AstConstantValue

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

Formats the value using the given formatter.

impl Display for AstConstantValue

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

Formats the value using the given formatter.

impl From<AstConstantValue> for AstStaticStorageInitializer

fn from(value: AstConstantValue) -> Self

Converts to this type from the input type.

impl PartialEq for AstConstantValue

fn eq(&self, other: &AstConstantValue) -> 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 StructuralPartialEq for AstConstantValue