AST.h

#ifndef AST_H
#define AST_H

typedef enum{
    
    AST_DECLARATION,    //for decleration statement
    AST_ASSIGNMENT,     //for assignment statement
    AST_INCREMENT,      //for increment statement
    AST_DECREMENT,      //for decrement statement
    AST_WRITE,          //for write statement
    AST_WRITE_ELEMENT,  //for elements that will be written
    AST_LOOP,           //for loop statement
    AST_CODEBLOCK,      //for statement list in loop
    AST_VARIABLE,       //for variable
    AST_LITERAL,        //for number or string constants
    AST_NEWLINE,        //for new line
    AST_PROGRAM         //for program statements

}ASTtype;
    //the structure that stores the statement
    typedef struct AST {
    ASTtype type;
    int line ;
    union {
        struct { char* name;  char* value;} declaration; // number x; or number x := value;

        
        
        struct { char* name; struct AST* value; } assignment;  // x += value;
        struct { char* name; struct AST* value; } increment;  // x += value;
        struct { char* name; struct AST* value; } decrement;  // x -= value;

        struct { struct AST** elements; int count; } write;   // write a and "b" and newline;

        struct { char* value; } string_literal;               // "Hello!"
        struct { char* value; } number_literal;               // max 100 digit number
        struct { char* value; } newLine;                      // new line character
        struct { char* name; } variable;                      // x, y, z

        struct { struct AST* times; struct AST* body; } loop; // repeat N times <stmt|block>

        struct { struct AST** statements; int count; int position;} codeblock; // { ... }
        struct { struct AST** statements; int count; int position; } programStatements; //All statements
    };
    
} AST;

#endif