compilers-2019 main repository for lab works

1. Short description about my chosen theme

Program with OCR-system, which loads photo and document, and compares it.

2. Description of my language (types, built-in functions etc.)

Types: photo(as string path to photo), document(as string path to document), var(another object).
Built-in functions: print(parameter), read(parameter), load(parameter).
Statement: if-else, switch-case.
Operators: =, ==, !=, >, >=, <, <=.

3. Description

Interpreter consists of lexical analyzer, syntax analyzer, semantic analyzer and translator(class Interpreter).
For lexer it uses class Token, TokenKind and Lexer(in folder Lexer).
For syntax it uses class Parser(folder Parser) and different kind of parser, description of Expression, Statement, Declaration (folder Syntax).
For semantic it uses parserTree and class Semantic.
After all tests use translator.

Example

Source code:

func main()
{
    photo a;
    photo b;
    photo c;
    a = "E:\test1.png";
    b = "E:\test2.png";
    c = "E:\test1.png";
    switch(c)
    {
         case a: print(a);
         case b: print(b);
    }
}
main();

In this example the first thing is creating function main without parameters. Next step is declaration of variables a, b and c with type photo and assignment of string literal with full path with name. After that call switch-case statement, in which c variable is checked for equality with other photo. If variable is equal in one of the cases, execute function print to output information about photo to standart output stream. After creating execute function main.

Output:

functional print "test1.png"