4.2. Declaration Statements#

Syntax#

TupleDeconstructionStatement = (* var_keyword: *) VAR_KEYWORD? (* Deprecated in 0.5.0 *)
                               (* open_paren: *) OPEN_PAREN
                               (* elements: *) TupleDeconstructionElements
                               (* close_paren: *) CLOSE_PAREN
                               (* equal: *) EQUAL
                               (* expression: *) Expression
                               (* semicolon: *) SEMICOLON;

TupleDeconstructionElements = (* item: *) TupleDeconstructionElement ((* separator: *) COMMA (* item: *) TupleDeconstructionElement)*;

TupleDeconstructionElement = (* member: *) TupleMember?;

TupleMember = (* variant: *) TypedTupleMember
            | (* variant: *) UntypedTupleMember;

TypedTupleMember = (* type_name: *) TypeName
                   (* storage_location: *) StorageLocation?
                   (* name: *) IDENTIFIER;

UntypedTupleMember = (* storage_location: *) StorageLocation?
                     (* name: *) IDENTIFIER;

VariableDeclarationStatement = (* variable_type: *) VariableDeclarationType
                               (* storage_location: *) StorageLocation?
                               (* name: *) IDENTIFIER
                               (* value: *) VariableDeclarationValue?
                               (* semicolon: *) SEMICOLON;

VariableDeclarationType = (* variant: *) TypeName
                        | (* variant: *) VAR_KEYWORD; (* Deprecated in 0.5.0 *)

VariableDeclarationValue = (* equal: *) EQUAL
                           (* expression: *) Expression;

StorageLocation = (* variant: *) MEMORY_KEYWORD
                | (* variant: *) STORAGE_KEYWORD
                | (* variant: *) CALL_DATA_KEYWORD; (* Introduced in 0.5.0 *)

Documentation#