Michael Fabian 'Xaymar' Dirks
91 lines
3.1 KiB
C++
91 lines
3.1 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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#pragma once
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#include <list>
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#include <memory>
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#include <optional>
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#include <string>
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#include "../lexer.hpp"
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#include "../types.hpp"
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// BlitzBasic Built-Ins
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// - Include: Followed by a String, which is the file to include at this location.
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// - Const: Defines one or more constants, which can not be modified.
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// - Local: Defines one or more local variables, which can be modified.
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// - Global: Defines one or more global variables, which can be modified from anywhere.
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// - Dim: Defines a dynamically resizable array, globally accessible and modifyable.
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// - If, Then, ElseIf, EndIf: Your classic If.
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// - Select, Case, Default, End Select: Your classic Select.
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// - For, To, Step, Next: Your classic For loop.
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// - While, Wend: Your classic While loop.
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// - Repeat, Until, Forever: Similar to While/Wend, but the condition is at the end and will only loop if the condition is false.
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// - Exit: Exit from any currently active loops. I guess this allows leaving Repeat/Forever combinations.
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// - True, False: True and False. What, did you expect something else?
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// - Stop: Pause the program for the debugger, if there happens to be one.
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// - End: Terminate the program.
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// - Goto: Jump to a specific label, without setting the return address.
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// - Gosub, Return: Jump to a specific label (subroutine), setting the return address appropriately, and Return from it eventually.
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// - Function, Return, End Function: Defines a function, and allows returning values. Yes, I know, End itself terminates the program, this is a special case. Thanks younger Sibly.
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// - And, Or, Not: Logical operator, self-explanatory really.
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#undef NULL
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namespace blitz {
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namespace ast {
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struct node {
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std::vector<blitz::token> tokens;
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virtual ~node() = default;
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};
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struct variable : public node {
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std::string name;
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blitz::types::type type;
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std::string struct_name;
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virtual ~variable();
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static bool can_parse(std::shared_ptr<blitz::lexer> lexer);
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static std::shared_ptr<blitz::ast::node> try_parse(std::shared_ptr<blitz::lexer> lexer);
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};
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struct value : public node {
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enum class variant {
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UNKNOWN,
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NULL,
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BOOL,
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INTEGER,
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UNSIGNED_INTEGER,
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REAL,
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STRING,
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} type;
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union {
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bool b;
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intmax_t i;
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uintmax_t ui;
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double f;
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} number;
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std::string text;
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virtual ~value();
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static bool can_parse(std::shared_ptr<blitz::lexer> lexer);
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static std::shared_ptr<blitz::ast::node> try_parse(std::shared_ptr<blitz::lexer> lexer);
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};
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struct declare : public node {
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// Local, Global
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bool global;
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std::list<std::shared_ptr<blitz::ast::node>> nodes;
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virtual ~declare();
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static bool can_parse(std::shared_ptr<blitz::lexer> lexer);
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static std::shared_ptr<blitz::ast::node> try_parse(std::shared_ptr<blitz::lexer> lexer);
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};
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struct expression : public node {};
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} // namespace ast
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} // namespace blitz
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