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Module `dmd.expression`

Defines the bulk of the classes which represent the AST at the expression level.

Specification

($LINK2 https://dlang.org/spec/expression.html, Expressions)

Documentation

https://dlang.org/phobos/dmd_expression.html

Coverage

https://codecov.io/gh/dlang/dmd/src/master/src/dmd/expression.d

Functions

Name	Description
`checkModifiable(exp, sc, flag)`
`doCopyOrMove(sc, e, t)`	Handle the postblit call on lvalue, or the move of rvalue.
`expandTuples(exps, names)`	Expand tuples in-place.
`expToVariable(e)`	Given an Expression, find the variable it really is.
`firstComma(e)`	Find the first non-comma expression.
`getFuncTemplateDecl(s)`	If `s` is a function template, i.e. the only member of a template and that member is a function, return that template.
`hasThis(sc)`	Determine if `this` is available by walking up the enclosing scopes until a function is found.
`isAliasThisTuple(e)`	Expand alias this tuples.
`isArrayConstructionOrAssign(id)`	Verify if the given identifier is any of d_array{ctor,setctor,setassign,assign_l, assign_r}.
`isDefaultInitOp(op)`
`isDotOpDispatch(e)`	check e is exp.opDispatch!(tiargs) or not It's used to switch to UFCS the semantic analysis path
`isNeedThisScope(sc, d)`	Determine if a `this` is needed to access `d`.
`lastComma(e)`	Find the last non-comma expression.
`RealIdentical(x1, x2)`	Test to see if two reals are the same. Regard NaN's as equivalent. Regard +0 and -0 as different.
`typeDotIdExp(loc, type, ident)`	TypeDotIdExp
`valueNoDtor(e)`	If we want the value of this expression, but do not want to call the destructor on it.

Classes

Name	Description
`AddAssignExp`	`x += y`
`AddExp`	The addition operator, `x + y`
`AddrExp`	The 'address of' operator, `&p`
`AndAssignExp`	`x &= y`
`AndExp`	The bitwise 'and' operator, `x & y`
`ArrayExp`	e1 [ a0, a1, a2, a3 ,... ]
`ArrayLengthExp`	The `.length` property of an array
`ArrayLiteralExp`	[ e1, e2, e3, ... ]
`AssertExp`	An assert expression, `assert(x == y)`
`AssignExp`	The assignment / initialization operator, `=`
`AssocArrayLiteralExp`	[ key0 : value0, key1 : value1, ... ]
`BinAssignExp`	Binary operator assignment, `+=` `-=` `*=` etc.
`BinExp`	Base class for binary operators
`BlitExp`	A bit-for-bit copy from `e2` to `e1`
`CallExp`
`CastExp`	The type cast operator, `cast(T) x`
`CatAssignExp`	The `~=` operator.
`CatDcharAssignExp`	The `~=` operator when appending a single `dchar`
`CatElemAssignExp`	The `~=` operator when appending a single element
`CatExp`	The concatenation operator, `x ~ y`
`CmpExp`	A comparison operator, `<` `<=` `>` `>=`
`ComExp`	The bitwise complement operator, `~x`
`CommaExp`
`ComplexExp`	A compile-time complex number (deprecated)
`CompoundLiteralExp`	C11 6.5.2.5 ( type-name ) { initializer-list }
`CondExp`	The ternary operator, `econd ? e1 : e2`
`ConstructExp`
`DeclarationExp`	Declaration of a symbol
`DefaultInitExp`	A special keyword when used as a function's default argument
`DelegateExp`
`DelegateFuncptrExp`	The `dg.funcptr` property, pointing to the delegate's function
`DelegatePtrExp`	The `dg.ptr` property, pointing to the delegate's 'context'
`DeleteExp`	The delete operator, `delete x` (deprecated)
`DivAssignExp`	`x /= y`
`DivExp`	The division operator, `x / y`
`DollarExp`	The dollar operator used when indexing or slicing an array. E.g `a[$]`, `a[1 .. $]` etc.
`DotExp`
`DotIdExp`
`DotTemplateExp`	Mainly just a placeholder
`DotTemplateInstanceExp`	foo.bar!(args)
`DotTypeExp`
`DotVarExp`
`DsymbolExp`	Won't be generated by parser.
`EqualExp`	`==` and `!=`
`ErrorExp`	Use this expression for error recovery.
`Expression`
`FileInitExp`	The `__FILE__` token as a default argument
`FuncExp`	Function/Delegate literal
`FuncInitExp`	The `__FUNCTION__` token as a default argument
`GenericExp`	C11 6.5.1.1 Generic Selection For ImportC
`HaltExp`	Generates a halt instruction
`IdentifierExp`	An identifier in the context of an expression (as opposed to a declaration)
`IdentityExp`	`is` and `!is`
`ImportExp`	An import expression, `import("file.txt")`
`IndexExp`	e1 [ e2 ]
`InExp`	The `in` operator, `"a" in ["a": 1]`
`IntegerExp`	A compile-time known integer value
`IntervalExp`	Mainly just a placeholder
`IsExp`	is(targ id tok tspec) is(targ id == tok2)
`LineInitExp`	The `__LINE__` token as a default argument
`LogicalExp`	The logical 'and' / 'or' operator, `X && Y` / `X \|\| Y`
`LoweredAssignExp`	When an assignment expression is lowered to a druntime call this class is used to store the lowering. It essentially behaves the same as an AssignExp, but it is used to not waste space for other AssignExp that are not lowered to anything.
`MinAssignExp`	`x -= y`
`MinExp`	The minus operator, `x - y`
`MixinExp`	A string mixin, `mixin("x")`
`ModAssignExp`	`x %= y`
`ModExp`	The modulo operator, `x % y`
`ModuleInitExp`	The `__MODULE__` token as a default argument
`MulAssignExp`	`x *= y`
`MulExp`	The multiplication operator, `x * y`
`NegExp`	The negation operator, `-x`
`NewAnonClassExp`	class baseclasses { } (arguments)
`NewExp`	newtype(arguments)
`NotExp`	The logical not operator, `!x`
`NullExp`	A compile-time known `null` value
`ObjcClassReferenceExp`	Objective-C class reference expression.
`OrAssignExp`	`x \|= y`
`OrExp`	The bitwise 'or' operator, `x \| y`
`OverExp`	Overload Set
`PostExp`	The postfix increment/decrement operator, `i++` / `i--`
`PowAssignExp`	`x ^^= y`
`PowExp`	The 'power' operator, `x ^^ y`
`PreExp`	The prefix increment/decrement operator, `++i` / `--i`
`PrettyFuncInitExp`	The `__PRETTY_FUNCTION__` token as a default argument
`PtrExp`	The pointer dereference operator, `*p`
`RealExp`	A compile-time known floating point number
`RemoveExp`	Associative array removal, `aa.remove(arg)`
`ScopeExp`	Mainly just a placeholder of Package, Module, Nspace, and TemplateInstance (including TemplateMixin)
`ShlAssignExp`	`x <<= y`
`ShlExp`	The 'shift left' operator, `x << y`
`ShrAssignExp`	`x >>= y`
`ShrExp`	The 'shift right' operator, `x >> y`
`SliceExp`	e1 [lwr .. upr]
`StringExp`
`StructLiteralExp`	sd( e1, e2, e3, ... )
`SuperExp`
`SymbolExp`
`SymOffExp`	Offset from symbol
`TemplateExp`	Mainly just a placeholder
`ThisExp`
`ThrowExp`	`throw <e1>` as proposed by DIP 1034.
`TraitsExp`	_traits(identifier, args...)
`TupleExp`	A sequence of expressions
`TypeExp`	Mainly just a placeholder
`TypeidExp`	typeid(int)
`UAddExp`	The unary add operator, `+x`
`UnaExp`	Base class for unary operators
`UshrAssignExp`	`x >>>= y`
`UshrExp`	The 'unsigned shift right' operator, `x >>> y`
`VarExp`	Variable
`VectorArrayExp`	e1.array property for vectors.
`VectorExp`
`VoidInitExp`	An uninitialized value, generated from void initializers.
`XorAssignExp`	`x ^= y`
`XorExp`	The bitwise 'xor' operator, `x ^ y`

Structs

Name	Description
`ArgumentList`	The arguments of a function call
`UnionExp`

Enums

Name	Description
`Modifiable`	Return value for `checkModifiable`
`ModifyFlags`	Specifies how the checkModify deals with certain situations

Manifest constants

Name	Type	Description
`stageApply`		apply is running
`stageInlineScan`		inlineScan is running
`stageOptimize`		optimize is running
`stageScrub`		scrubReturnValue is running
`stageSearchPointers`		hasNonConstPointers is running
`stageToCBuffer`		toCBuffer is running

Authors

Walter Bright

License

Boost License 1.0