[−][src]Enum ggbasm::ast::Expr
Assembly uses constant expressions to avoid copying magic numbers around. Expr represents these constant expressions.
The run method evaluates the constant expression. The get_2bytes, get_byte and get_bit_index evaluate the constant expression but also convert to a specific low level type needed by instructions.
Variants
Ident(String)
Const(i64)
Binary(Box<BinaryExpr>)
Unary(Box<UnaryExpr>)
Methods
impl Expr
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pub fn binary(left: Expr, operator: BinaryOperator, right: Expr) -> Expr
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pub fn unary(expr: Expr, operator: UnaryOperator) -> Expr
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pub fn get_2bytes(
&self,
constants: &HashMap<String, i64>
) -> Result<[u8; 2], ExprRunError>
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&self,
constants: &HashMap<String, i64>
) -> Result<[u8; 2], ExprRunError>
pub fn get_byte(
&self,
constants: &HashMap<String, i64>
) -> Result<u8, ExprRunError>
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&self,
constants: &HashMap<String, i64>
) -> Result<u8, ExprRunError>
pub fn get_bit_index(
&self,
constants: &HashMap<String, i64>
) -> Result<u8, ExprRunError>
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&self,
constants: &HashMap<String, i64>
) -> Result<u8, ExprRunError>
pub fn run(&self, constants: &HashMap<String, i64>) -> Result<i64, ExprRunError>
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Trait Implementations
impl PartialEq<Expr> for Expr
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impl Clone for Expr
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fn clone(&self) -> Expr
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fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl Debug for Expr
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Auto Trait Implementations
impl Sync for Expr
impl Send for Expr
impl Unpin for Expr
impl RefUnwindSafe for Expr
impl UnwindSafe for Expr
Blanket Implementations
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> SetParameter for T
fn set<T>(&mut self, value: T) -> <T as Parameter<Self>>::Result where
T: Parameter<Self>,
T: Parameter<Self>,
Sets value
as a parameter of self
.