Michael Fabian 'Xaymar' Dirks
103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
// AUTOGENERATED COPYRIGHT HEADER START
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// Copyright (C) 2017-2025 Michael Fabian 'Xaymar' Dirks <info@xaymar.com>
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// AUTOGENERATED COPYRIGHT HEADER END
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#include <clocale>
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#include <iostream>
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#include "compiler.hpp"
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#include "error.hpp"
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#include "lexer.hpp"
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#include "parser.hpp"
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int main(int argc, char** argv)
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{
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try {
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std::setlocale(LC_ALL, "en_US.UTF-8");
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std::cout << argv[1] << std::endl;
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blitz::lexer lex(argv[1]);
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for (blitz::token token = lex.next(); (token.type != blitz::token::variant::ENDOFFILE); token = lex.next()) {
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switch (token.type) {
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case blitz::token::variant::COMMENT:
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std::cout << token.text;
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break;
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case blitz::token::variant::SYMBOL:
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std::cout << token.text << " ";
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break;
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case blitz::token::variant::TEXT:
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case blitz::token::variant::INTEGER:
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case blitz::token::variant::REAL:
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std::cout << token.text << " ";
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break;
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case blitz::token::variant::STRING:
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std::cout << "\"" << token.text << "\""
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<< " ";
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break;
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case blitz::token::variant::NEWLINE:
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std::cout << std::endl;
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break;
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default:
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std::cout << token.to_string() << " ";
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break;
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}
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if (token.type == blitz::token::variant::UNKNOWN) {
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std::cin.get();
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}
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}
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blitz::parser pars(argv[1]);
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//std::cin.get();
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return 0;
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} catch (blitz::error const& ex) {
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std::cout << ex.file() << std::endl;
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std::cout << "Line " << ex.at().first << ", Char " << ex.at().second << ": " << ex.what() << std::endl;
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return 1;
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} catch (std::runtime_error const& ex) {
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std::cout << ex.what() << std::endl;
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return 1;
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}
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}
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// BlitzBasic is a strange but powerful language in the right hands. While it has
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// somewhat unusual syntax and rules at times, it does not usually have ambigious
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// syntax and rules like C and C++ do. Overall, the quirks can be easily explained
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// and shouldn't cause odd problems.
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//
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// 1. Variables can be automatically defined if you did not define them before.
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// ```
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// Local var1 ; Local Variable definition of var1
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// Global var2 ; Global Variable definition of var2
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// var1 = var3 ; Automatic definition of var3 as Local Variable
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// ```
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//
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// 2. Names are not unique, and case-insensitive
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// ```
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// Local myName ; Defines myName as Local
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// Local MyName ; Defines MyName as Local, should error because myName has already been defined.
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// Function myName() : End Function ; Defines myName as Function
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// Type myName ; Defines myName as Type
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// Field Bla
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// End Type
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// ```
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//
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// 3. Function calls don't always need Parenthesis:
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// ```
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// Local myName
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// Function myName() : End Function
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// If myName() Then : EndIf ; <- Calls myName
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// myName ; <- Calls myName, because there is no = after it.
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// ```
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//
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// 4. Int(TypeVariable) returns the pointer to the TypeVariable:
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// ```
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// Type myName
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// Field Bla
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// End Type
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// Local myName.myName = New myName
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// Print Int(myName) ; <- Prints the address of the object contained in myName.
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// ```
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//
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// As this is a Basic language, there is no concept of undefined or uninitialized anything. Every behavior is well defined.
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