Programming Language : SelfScript

Group Members: 20200808051 Neslihan AKKOÇ , 20200808041 Uğur AKIN

Introduction

• Our language name is : SelfScript

• Takes a file with extension .self

• SelfScript is a high-level programming language designed for ease of use and readability. It supports a wide range of data types, control structures, and operator functionalities, making it suitable for various application domains.

Explanations about the language

• Data Types: SelfScript supports integer, float, string, and boolean data types.

• Control Structures: It includes if-else statements and loops (both for and while loops) for efficient flow control. Example loopy(i<5) //when user uses it like this it is a while loop loopy(i:3; i < 8 ; i++ ) // in this stuation it performs as a for loop

• Method Declarations: Methods are declared using the metoot keyword followed by the method signature and a block of statements, allowing for modular code organization and reusability. Example : metoot add(a, b) { echo a + b }

• Operator Support: SelfScript provides comprehensive support for arithmetic and logical operators, enabling developers to perform complex computations and logical operations.

• Commenting: Comments can be added using the // syntax, allowing developers to annotate their code for better understanding.

Syntax Explanation:

• Data Types : Integer, float, string, boolean.

• Control Structures : if-else statements, loops(both for and while loops)

• Method Declarations : Methods are declared using the keyword 'metoot' followed by the method signature and a block of statements, allowing for modular code organization.

• Operator Supports : We implemented support for arithmetic and logical operators

• Comment Support : Comments are denoted by //.

• You can run your program by running the makefile and giving it to SelfScript as input:

make ./SelfScript < example.self

Syntax in BNF

::= <statement_list>

<statement_list> ::= | <statement_list>

::= <assignment_statement> | <conditional_statement> | <loop_statement> | <output_statement> | <return_statement> | <comment_statement> | <method_declaration>

<assignment_statement> ::= '=' ';'

<conditional_statement> ::= <if_statement> | <else_if_statement> | <else_statement>

<if_statement> ::= 'whynot' '(' ')'

<else_if_statement> ::= 'whynotagain' '(' ')'

<else_statement> ::= 'otherwise'

<loop_statement> ::= 'loopy' <loop_type>

<loop_type> ::= <while_loop> | <for_loop>

<while_loop> ::= '(' ')'

<for_loop> ::= '(' <init_statement> ';' ';' <update_statement> ')'

<init_statement> ::= <assignment_statement>

<update_statement> ::= <assignment_statement>

<output_statement> ::= 'giggle' '(' ')' ';'

<return_statement> ::= 'echo' ';'

<comment_statement> ::= '//' <comment_text>

<method_declaration> ::= 'metoot' <method_signature>

<method_signature> ::= '(' <parameter_list> ')' <parameter_list> ::= | <parameter_list> ',' ::=

::= '{' <statement_list> '}'

::= | <add_operator>

::= | <mult_operator>

::= | | '(' ')' | <unary_operator>

::= | | |

::= [0-9]+

::= [0-9]+.[0-9]+

::= '"' '"'

::= 'true' | 'false'

::= [a-zA-Z_][a-zA-Z0-9_]*

::= |

::= | | <special_character>

::= [a-zA-Z]

::= [0-9]

<special_character> ::= [!@#$%^&*()_+{}[]:;<>,.?/~`|-]

<add_operator> ::= '+' | '-'

<mult_operator> ::= '*' | '/'

<unary_operator> ::= '!' | 'not'