@flowscripter/mpeg-sdl-parser/tests/lezer/test_cases/if_statement.txt

ISO/IEC 14496-34 Syntactic Description Language (MPEG SDL) parser implemented in TypeScript

# With braces in clauses

class A {if(i==1){i++;}else if(i==2){i--;}else{j++;}}

==>

Specification(
    ClassDeclaration(
        class
        Whitespace
        Identifier
        Whitespace
        OpenBrace
        IfStatement(
            if
            OpenParenthesis
            BinaryExpression(
                UnaryExpression(
                    Identifier
                )
                RelationalEqual
                UnaryExpression(
                    IntegerLiteral
                )
            )
            CloseParenthesis
            CompoundStatement(
                OpenBrace
                ExpressionStatement(
                    UnaryExpression(
                        UnaryExpression(
                            Identifier
                        )
                        PostfixIncrement
                    )
                    Semicolon
                )
                CloseBrace
            )
            else
            Whitespace
            IfStatement(
                if
                OpenParenthesis
                BinaryExpression(
                    UnaryExpression(
                        Identifier
                    )
                    RelationalEqual
                    UnaryExpression(
                        IntegerLiteral
                    )
                )
                CloseParenthesis
                CompoundStatement(
                    OpenBrace
                    ExpressionStatement(
                        UnaryExpression(
                            UnaryExpression(
                                Identifier
                            )
                            PostfixDecrement
                        )
                        Semicolon
                    )
                    CloseBrace
                )
                else
                CompoundStatement(
                    OpenBrace
                    ExpressionStatement(
                        UnaryExpression(
                            UnaryExpression(
                                Identifier
                            )
                            PostfixIncrement
                        )
                        Semicolon
                    )
                    CloseBrace
                )
            )
        )
        CloseBrace
    )
)

# No braces and no else if clause

class A {if(i==1)i++;else j++;}

==>


Specification(
    ClassDeclaration(
        class
        Whitespace
        Identifier
        Whitespace
        OpenBrace
        IfStatement(
            if
            OpenParenthesis
            BinaryExpression(
                UnaryExpression(
                    Identifier
                )
                RelationalEqual
                UnaryExpression(
                    IntegerLiteral
                )
            )
            CloseParenthesis
            ExpressionStatement(
                UnaryExpression(
                    UnaryExpression(
                        Identifier
                    )
                    PostfixIncrement
                )
                Semicolon
            )
            else
            Whitespace
            ExpressionStatement(
                UnaryExpression(
                    UnaryExpression(
                        Identifier
                    )
                    PostfixIncrement
                )
                Semicolon
            )
        )
        CloseBrace
    )
)