# Syntax (old)

### Statements

```PEG
ExpressionStatement     ← Expression ';'
```

### Expressions

```PEG
AssignmentTargetExpression ← identifier ATEElementSuffix*
ATEElementSuffix           ← '[' Expression ']' /
                             '.' identifier /
                             '->' identifier

AtomicExpression           ← identifier /
                             constant /
                             string-literal /
                             '(' Expression ')'

ObjectExpression           ← AtomicExpression ObjectSuffix* /
                             ArrayLiteralExpression /
                             StructLiteralExpression
ObjectSuffix               ← '[' Expression ']' /
                             '(' CommasExpressionList? ')' /
                             '.' identifier /
                             '->' identifier
CommasExpressionList       ← Expression ',' CommasExpressionList? /
                             Expression ','?
ArrayLiteralExpression     ← '{' CommasExpressionList '}'
StructLiteralExpression    ← '{' StructLiteralBody '}'
StructLiteralBody          ← StructLiteralElement ',' StructLiteralBody? /
                             StructLiteralElement ','?
StructLiteralElement       ← '.' identifier '=' Expression

FactorExpression           ← '(' Type ')' FactorExpression /
                             '&' FactorExpression /
                             '*' FactorExpression /
                             '+' FactorExpression /
                             '-' FactorExpression /
                             '~' FactorExpression /
                             '!' FactorExpression /
                             'sizeof' FactorExpression /
                             'sizeof' Type /
                             ObjectExpression

TermExpression             ← FactorExpression TermSuffix*
TermSuffix                 ← '*' FactorExpression /
                             '/' FactorExpression /
                             '%' FactorExpression

ArithmeticExpression       ← TermExpression ArithmeticSuffix*
ArithmeticSuffix           ← '+' TermExpression /
                             '-' TermExpression

BitwiseOpExpression        ← ArithmeticExpression '<<' ArithmeticExpression /
                             ArithmeticExpression '>>' ArithmeticExpression /
                             ArithmeticExpression '^' ArithmeticExpression /
                             ArithmeticExpression ('&' ArithmeticExpression)+ /
                             ArithmeticExpression ('|' ArithmeticExpression)+ /
                             ArithmeticExpression

ComparisonExpression       ← BitwiseOpExpression '==' BitwiseOpExpression /
                             BitwiseOpExpression '!=' BitwiseOpExpression /
                             BitwiseOpExpression '<=' BitwiseOpExpression /
                             BitwiseOpExpression '>=' BitwiseOpExpression /
                             BitwiseOpExpression '<' BitwiseOpExpression /
                             BitwiseOpExpression '>' BitwiseOpExpression /
                             BitwiseOpExpression

Expression                 ← ComparisonExpression ('&&' ComparisonExpression)+ /
                             ComparisonExpression ('||' ComparisonExpression)+ /
                             ComparisonExpression
```