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35 lines
1.7 KiB
35 lines
1.7 KiB
ContractDefinition = 'contract' Identifier '{' ContractPart* '}'
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ContractPart = VariableDeclaration ';' | StructDefinition |
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FunctionDefinition | 'public:' | 'private:'
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StructDefinition = 'struct' Identifier '{'
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( VariableDeclaration (';' VariableDeclaration)* )? '}
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FunctionDefinition = 'function' Identifier ParameterList 'const'?
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( 'returns' ParameterList )? Block
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ParameterList = '(' ( VariableDeclaration (',' VariableDeclaration)* )? ')'
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// semantic restriction: mappings and structs (recursively) containing mappings
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// are not allowed in argument lists
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VariableDeclaration = TypeName Identifier
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TypeName = ElementaryTypeName | Identifier | Mapping
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Mapping = 'mapping' '(' ElementaryTypeName '=>' TypeName ')'
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Block = '{' Statement* '}'
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Statement = IfStatement | WhileStatement | Block |
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( Continue | Break | Return | VariableDefinition | Expression ) ';'
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IfStatement = 'if' '(' Expression ')' Statement ( 'else' Statement )?
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WhileStatement = 'while' '(' Expression ')' Statement
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Continue = 'continue' ';'
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Break = 'break' ';'
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Return = 'return' Expression? ';'
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VariableDefinition = VariableDeclaration ( = Expression )? ';'
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Expression = Assignment | UnaryOperation | BinaryOperation | FunctionCall | IndexAccess |
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MemberAccess | PrimaryExpression
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// The expression syntax is actually much more complicated
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Assignment = Expression (AssignmentOp Expression)
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FunctionCall = Expression '(' ( Expression ( ',' Expression )* ) ')'
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MemberAccess = Expression '.' Identifier
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IndexAccess = Expression '[' Expresison ']'
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PrimaryExpression = Identifier | NumberLiteral | StringLiteral | ElementaryTypeName | '(' Expression ')'
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