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Merge pull request #5547 from ethereum/assemblySyntax

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Update assembly grammar part.
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chriseth 2018-12-03 11:18:56 +01:00 committed by GitHub
commit 3159e2a220
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1 changed files with 27 additions and 8 deletions
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35
docs/grammar.txt
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@ -72,7 +72,7 @@ WhileStatement = 'while' '(' Expression ')' Statement
PlaceholderStatement = '_'
SimpleStatement = VariableDefinition | ExpressionStatement
ForStatement = 'for' '(' (SimpleStatement)? ';' (Expression)? ';' (ExpressionStatement)? ')' Statement
InlineAssemblyStatement = 'assembly' StringLiteral? InlineAssemblyBlock
InlineAssemblyStatement = 'assembly' StringLiteral? AssemblyBlock
DoWhileStatement = 'do' Statement 'while' '(' Expression ')'
Continue = 'continue'
Break = 'break'
@ -152,11 +152,30 @@ Fixed = 'fixed' | ( 'fixed' [0-9]+ 'x' [0-9]+ )
Ufixed = 'ufixed' | ( 'ufixed' [0-9]+ 'x' [0-9]+ )
InlineAssemblyBlock = '{' AssemblyItem* '}'
AssemblyItem = Identifier | FunctionalAssemblyExpression | InlineAssemblyBlock | AssemblyVariableDeclaration | AssemblyAssignment | AssemblyLabel | NumberLiteral | StringLiteral | HexLiteral
AssemblyExpression = Identifier | FunctionalAssemblyExpression | NumberLiteral | StringLiteral | HexLiteral
AssemblyVariableDeclaration = 'let' Identifier ':=' AssemblyExpression
AssemblyAssignment = ( Identifier ':=' AssemblyExpression ) | ( '=:' Identifier )
AssemblyLabel = Identifier ':'
FunctionalAssemblyExpression = Identifier '(' AssemblyItem? ( ',' AssemblyItem )* ')'
AssemblyBlock = '{' AssemblyStatement* '}'
AssemblyStatement = AssemblyBlock
| AssemblyFunctionDefinition
| AssemblyVariableDeclaration
| AssemblyAssignment
| AssemblyIf
| AssemblyExpression
| AssemblySwitch
| AssemblyForLoop
| AssemblyBreakContinue
AssemblyFunctionDefinition =
'function' Identifier '(' AssemblyIdentifierList? ')'
( '->' AssemblyIdentifierList )? AssemblyBlock
AssemblyVariableDeclaration = 'let' AssemblyIdentifierList ( ':=' AssemblyExpression )?
AssemblyAssignment = AssemblyIdentifierList ':=' AssemblyExpression
AssemblyExpression = AssemblyFunctionCall | Identifier | Literal
AssemblyIf = 'if' AssemblyExpression AssemblyBlock
AssemblySwitch = 'switch' AssemblyExpression ( Case+ AssemblyDefault? | AssemblyDefault )
AssemblyCase = 'case' Literal AssemblyBlock
AssemblyDefault = 'default' AssemblyBlock
AssemblyForLoop = 'for' AssemblyBlock AssemblyExpression AssemblyBlock AssemblyBlock
AssemblyBreakContinue = 'break' | 'continue'
AssemblyFunctionCall = Identifier '(' ( AssemblyExpression ( ',' AssemblyExpression )* )? ')'
AssemblyIdentifierList = Identifier ( ',' Identifier )*