chore: flat out the file structure

This commit is contained in:
2026-09-11 18:48:16 +02:00
parent 959d0a7773
commit 3b98f77c08
78 changed files with 76 additions and 40 deletions
+346
View File
@@ -0,0 +1,346 @@
#ifndef FURC_FRONT_AST_HPP
#define FURC_FRONT_AST_HPP
#include <cstdint>
#include <optional>
#include <string>
#include <vector>
namespace furc {
struct comp_stmt_node;
struct if_stmt_node;
struct while_stmt_node;
struct return_stmt_node;
struct var_decl_node;
struct func_decl_node;
struct var_read_expr_node;
struct func_call_expr_node;
struct group_expr_node;
struct binary_op_expr_node;
struct unary_op_expr_node;
struct if_expr_node;
struct int_lit_node;
struct char_lit_node;
struct ast_visitor {
ast_visitor() = default;
virtual ~ast_visitor() = default;
ast_visitor(ast_visitor&&) noexcept = default;
ast_visitor& operator=(ast_visitor&&) noexcept = default;
ast_visitor(const ast_visitor&) = default;
ast_visitor& operator=(const ast_visitor&) = default;
virtual void visit_comp_stmt_node(const comp_stmt_node& node) {}
virtual void visit_if_stmt_node(const if_stmt_node& node) {}
virtual void visit_while_stmt_node(const while_stmt_node& node) {}
virtual void visit_return_stmt_node(const return_stmt_node& node) {}
virtual void visit_var_decl_node(const var_decl_node& node) {}
virtual void visit_func_decl_node(const func_decl_node& node) {}
virtual void visit_var_read_expr_node(const var_read_expr_node& node) {}
virtual void visit_func_call_expr_node(const func_call_expr_node& node) {}
virtual void visit_group_expr_node(const group_expr_node& node) {}
virtual void visit_binary_op_expr_node(const binary_op_expr_node& node) {}
virtual void visit_unary_op_expr_node(const unary_op_expr_node& node) {}
virtual void visit_if_expr_node(const if_expr_node& node) {}
virtual void visit_int_lit_node(const int_lit_node& node) {}
virtual void visit_char_lit_node(const char_lit_node& node) {}
};
struct ast_type {
enum type_e {
Void = 0,
S8,
U8,
S16,
U16,
S32,
U32,
S64,
U64,
} type = Void;
};
class ast_node {
public:
enum category_e {
Statement,
Declaration,
Expression,
Literal,
};
public:
ast_node() = default;
virtual ~ast_node() = default;
ast_node(ast_node&&) noexcept = default;
ast_node& operator=(ast_node&&) noexcept = default;
ast_node(const ast_node&) = delete;
ast_node& operator=(const ast_node&) = delete;
public:
virtual category_e category() const = 0;
virtual void accept(ast_visitor& visitor) const = 0;
};
using ast_node_cat = ast_node::category_e;
class stmt_node : public ast_node {
public:
enum stmt_type_e {
Declaration = 0,
Expression,
Compound,
If,
While,
Return,
};
public:
category_e category() const override { return ast_node_cat::Statement; }
virtual stmt_type_e stmt_type() const = 0;
};
struct comp_stmt_node final : public stmt_node {
stmt_type_e stmt_type() const override { return Compound; }
void accept(ast_visitor& visitor) const override { visitor.visit_comp_stmt_node(*this); }
std::vector<stmt_node*> stmts;
};
class expr_node;
struct if_stmt_node final : public stmt_node {
stmt_type_e stmt_type() const override { return If; }
void accept(ast_visitor& visitor) const override { visitor.visit_if_stmt_node(*this); }
expr_node* cond = nullptr;
stmt_node* thenBranch = nullptr;
stmt_node* elseBranch = nullptr;
};
struct while_stmt_node final : public stmt_node {
stmt_type_e stmt_type() const override { return While; }
void accept(ast_visitor& visitor) const override { visitor.visit_while_stmt_node(*this); }
expr_node* cond = nullptr;
stmt_node* body = nullptr;
};
struct return_stmt_node final : public stmt_node {
stmt_type_e stmt_type() const override { return Return; }
void accept(ast_visitor& visitor) const override { visitor.visit_return_stmt_node(*this); }
expr_node* value = nullptr;
};
class decl_node : public stmt_node {
public:
enum decl_type_e {
Variable,
Function
};
public:
category_e category() const override { return ast_node_cat::Declaration; }
stmt_type_e stmt_type() const override { return Declaration; }
virtual decl_type_e decl_type() const = 0;
};
struct var_decl_node final : public decl_node {
decl_type_e decl_type() const override { return Variable; }
void accept(ast_visitor& visitor) const override { visitor.visit_var_decl_node(*this); }
std::string name;
ast_type type;
expr_node* init = nullptr;
};
struct func_decl_node final : public decl_node {
decl_type_e decl_type() const override { return Function; }
void accept(ast_visitor& visitor) const override { visitor.visit_func_decl_node(*this); }
struct def_s {
comp_stmt_node body;
std::vector<expr_node*> preConds;
std::vector<expr_node*> postConds;
};
std::string name;
ast_type type;
std::vector<var_decl_node> params;
std::optional<def_s> def;
};
class expr_node : public stmt_node {
public:
enum expr_type_e {
Literal,
VarRead,
FunctionCall,
Group,
BinaryOp,
UnaryOp,
If,
};
public:
category_e category() const override { return ast_node_cat::Expression; }
stmt_type_e stmt_type() const override { return Expression; }
virtual expr_type_e expr_type() const = 0;
};
struct var_read_expr_node final : public expr_node {
expr_type_e expr_type() const override { return VarRead; }
void accept(ast_visitor& visitor) const override { visitor.visit_var_read_expr_node(*this); }
std::string name;
var_read_expr_node(std::string&& name)
: name(std::move(name)) {}
};
struct func_call_expr_node final : public expr_node {
expr_type_e expr_type() const override { return FunctionCall; }
void accept(ast_visitor& visitor) const override { visitor.visit_func_call_expr_node(*this); }
expr_node* lhs = nullptr;
std::vector<expr_node*> args;
};
struct group_expr_node final : public expr_node {
expr_type_e expr_type() const override { return Group; }
void accept(ast_visitor& visitor) const override { visitor.visit_group_expr_node(*this); }
expr_node* inner = nullptr;
};
struct binary_op_expr_node final : public expr_node {
enum binary_op_type {
Add = 0,
Sub,
Mul,
Div,
Mod,
Shl,
Shr,
BinAnd,
BinOr,
BinXor,
And,
Or,
Equals,
NotEquals,
LessThan,
LessEquals,
GreaterThan,
GreaterEquals,
};
expr_type_e expr_type() const override { return BinaryOp; }
void accept(ast_visitor& visitor) const override { visitor.visit_binary_op_expr_node(*this); }
expr_node* lhs = nullptr;
expr_node* rhs = nullptr;
binary_op_type type = Add;
};
struct unary_op_expr_node final : public expr_node {
enum unary_op_type {
Positive = 0,
Negative,
PreInc,
PreDec,
PostInc,
PostDec,
BinNot,
Not,
Sizeof,
Pointerof,
Lengthof,
};
expr_type_e expr_type() const override { return UnaryOp; }
void accept(ast_visitor& visitor) const override { visitor.visit_unary_op_expr_node(*this); }
expr_node* lhs = nullptr;
unary_op_type type = Positive;
};
struct if_expr_node final : public expr_node {
expr_type_e expr_type() const override { return If; }
void accept(ast_visitor& visitor) const override { visitor.visit_if_expr_node(*this); }
expr_node* cond = nullptr;
expr_node* thenExpr = nullptr;
expr_node* elseExpr = nullptr;
};
class lit_node : public expr_node {
public:
enum lit_type_e {
Integer,
Char,
};
public:
category_e category() const override { return ast_node_cat::Literal; }
expr_type_e expr_type() const override { return Literal; }
virtual lit_type_e lit_type() const = 0;
};
struct int_lit_node final : public lit_node {
int_lit_node(std::uint64_t value)
: value(value) {}
lit_type_e lit_type() const override { return Integer; }
void accept(ast_visitor& visitor) const override { visitor.visit_int_lit_node(*this); }
std::uint64_t value;
};
struct char_lit_node final : public lit_node {
char_lit_node(char value)
: value(value) {}
lit_type_e lit_type() const override { return Char; }
void accept(ast_visitor& visitor) const override { visitor.visit_char_lit_node(*this); }
char value;
};
struct ast {
std::vector<decl_node*> decls;
};
} // namespace furc
#endif // FURC_FRONT_AST_HPP
+47
View File
@@ -0,0 +1,47 @@
#ifndef FURC_FRONT_LEXER_HPP
#define FURC_FRONT_LEXER_HPP
#include "furc/front/token.hpp"
#include <cstddef>
#include <deque>
#include <string_view>
namespace furc {
class lexer {
public:
lexer(std::string_view filepath, std::string_view content)
: m_filepath(filepath), m_content(content) {}
~lexer() = default;
lexer(lexer&&) noexcept = default;
lexer& operator=(lexer&&) noexcept = default;
lexer(const lexer&) = delete;
lexer& operator=(const lexer&) = delete;
public:
token next_token();
token peek_token(std::size_t offset = 0);
private:
token get_token();
void next();
constexpr char get(std::size_t offset = 0) const;
void skip_spaces();
constexpr token::location location() const;
private:
std::string_view m_filepath;
std::string_view m_content;
std::size_t m_cursor = 0;
std::size_t m_row = 0;
std::size_t m_lineStart = 0;
std::deque<token> m_peekToken;
};
} // namespace furc
#endif // FURC_FRONT_LEXER_HPP
+51
View File
@@ -0,0 +1,51 @@
#ifndef FURC_FRONT_PARSER_HPP
#define FURC_FRONT_PARSER_HPP
#include "furc/front/ast.hpp"
#include "furc/front/lexer.hpp"
#include "furlang/arena.hpp"
#include <stdexcept>
namespace furc {
class parser {
public:
parser(lexer&& lexer, furlang::arena& arena)
: m_lexer(std::move(lexer)), m_arena(&arena) {}
~parser() = default;
parser(parser&&) noexcept = default;
parser& operator=(parser&&) noexcept = default;
parser(const parser&) = delete;
parser& operator=(const parser&) = delete;
public:
ast parse();
private:
stmt_node* parse_stmt();
decl_node* parse_decl();
expr_node* parse_expr();
ast_type parse_type();
comp_stmt_node parse_comp();
expr_node* parse_expr_primary();
expr_node* parse_expr_unary();
expr_node* parse_expr_right(expr_node* lhs, std::uint32_t precedence = 15);
private:
template <typename... Types>
token eat_token(Types... types) {
auto token = m_lexer.next_token();
if (((token.type == types) || ...)) return token;
throw std::runtime_error("unexpected token");
}
private:
lexer m_lexer;
furlang::arena* m_arena;
};
} // namespace furc
#endif // FURC_FRONT_PARSER_HPP
+218
View File
@@ -0,0 +1,218 @@
#ifndef FURC_FRONT_TOKEN_HPP
#define FURC_FRONT_TOKEN_HPP
#include <cstddef>
#include <cstdint>
#include <ostream>
#include <string_view>
namespace furc {
struct token {
enum type {
Identifier = 0,
Integer,
String,
Char,
LParen, /**< `(` */
RParen, /**< `)` */
LBrace, /**< `{` */
RBrace, /**< `}` */
LBracket, /**< `[` */
RBracket, /**< `]` */
Semicolon, /**< `;` */
Colon, /**< `:` */
Comma, /**< `,` */
Dot, /**< `.` */
Plus, /**< `+` */
Minus, /**< `-` */
Star, /**< `*` */
Slash, /**< `/` */
Percent, /**< `%` */
DblLT, /**< `<<` */
DblGT, /**< `>>` */
Ampersand, /**< `&` */
Pipe, /**< `|` */
Hat, /**< `^` */
DblAmpersand, /**< `&&` */
DblPipe, /**< `||` */
DblPlus, /**< `++` */
DblMinus, /**< `--` */
Tilde, /**< `~` */
ExMark, /**< `!` */
CatEars, /**< `^^` */
Equals, /**< `=` */
PlusEquals, /**< `+=` */
MinusEquals, /**< `-=` */
StarEquals, /**< `*=` */
SlashEquals, /**< `/=` */
PercentEquals, /**< `%=` */
AmpersandEquals, /**< `&=` */
PipeEquals, /**< `|=` */
HatEquals, /**< `^=` */
DblEquals, /**< `==` */
ExEquals, /**< `!=` */
LessThan, /**< `<` */
LessEquals, /**< `<=` */
GreaterThan, /**< `>` */
GreaterEquals, /**< `>=` */
SlimArrow, /**< `->` */
// My brother just another me
FatArrow, /**< `=>` */
Monkey, /**< `@` */
Sha256, /**< `#` */
Func, /**< `func` */
Return, /**< `return` */
If, /**< `if` */
Else, /**< `else` */
While, /**< `while` */
Public, /**< `public` */
Private, /**< `private` */
Pre, /**< `pre` */
Post, /**< `post` */
Pointerof, /**< `pointerof` */
Sizeof, /**< `sizeof` */
Lengthof, /**< `lengthof` */
S8, /**< `s8` */
U8, /**< `u8` */
S16, /**< `s16` */
U16, /**< `u16` */
S32, /**< `s32` */
U32, /**< `u32` */
S64, /**< `s64` */
U64, /**< `u64` */
// Errors:
UnexpectedCharacter,
UnexpectedEOF,
InvalidInteger,
EndOfFile,
} type;
union value {
std::nullptr_t null = nullptr;
std::uint64_t integer;
std::string_view string;
char character;
} value;
struct location {
std::string_view filepath;
std::size_t row = 0;
std::size_t col = 0;
} loc;
token(location loc, enum type type)
: loc(loc), type(type) {}
token(location loc, std::uint64_t integer)
: loc(loc), type(Integer) {
value.integer = integer;
}
token(location loc, enum type type, std::string_view string)
: loc(loc), type(type) {
value.string = string;
}
token(location loc, enum type type, char character)
: loc(loc), type(type) {
value.character = character;
}
friend std::ostream& operator<<(std::ostream& os, const token& token) {
switch (token.type) {
case token::Identifier: return os << token.value.string;
case token::String: return os << '"' << token.value.string << '"';
case token::Char: return os << '\'' << token.value.character << '\'';
case token::Integer: return os << token.value.integer;
case token::LParen: return os << "(";
case token::RParen: return os << ")";
case token::LBrace: return os << "{";
case token::RBrace: return os << "}";
case token::LBracket: return os << "[";
case token::RBracket: return os << "]";
case token::Semicolon: return os << ";";
case token::Colon: return os << ":";
case token::Comma: return os << ",";
case token::Dot: return os << ".";
case token::Plus: return os << "+";
case token::Minus: return os << "-";
case token::Star: return os << "*";
case token::Slash: return os << "/";
case token::Percent: return os << "%";
case token::DblLT: return os << "<<";
case token::DblGT: return os << ">>";
case token::Ampersand: return os << "&";
case token::Pipe: return os << "|";
case token::Hat: return os << "^";
case token::DblAmpersand: return os << "&&";
case token::DblPipe: return os << "||";
case token::DblPlus: return os << "++";
case token::DblMinus: return os << "--";
case token::Tilde: return os << "~";
case token::ExMark: return os << "!";
case token::CatEars: return os << "^^";
case token::Equals: return os << "=";
case token::PlusEquals: return os << "+=";
case token::MinusEquals: return os << "-=";
case token::StarEquals: return os << "*=";
case token::SlashEquals: return os << "/=";
case token::PercentEquals: return os << "%=";
case token::AmpersandEquals: return os << "&=";
case token::PipeEquals: return os << "|=";
case token::HatEquals: return os << "^=";
case token::DblEquals: return os << "==";
case token::ExEquals: return os << "!=";
case token::LessThan: return os << "<";
case token::LessEquals: return os << "<=";
case token::GreaterThan: return os << ">";
case token::GreaterEquals: return os << ">=";
case token::SlimArrow: return os << "->";
case token::FatArrow: return os << "=>";
case token::Monkey: return os << "@";
case token::Sha256: return os << "#";
case token::Func: return os << "func";
case token::Return: return os << "return";
case token::If: return os << "if";
case token::Else: return os << "else";
case token::While: return os << "while";
case token::Public: return os << "public";
case token::Private: return os << "private";
case token::Pre: return os << "pre";
case token::Post: return os << "post";
case token::Pointerof: return os << "pointerof";
case token::Sizeof: return os << "sizeof";
case token::Lengthof: return os << "lengthof";
case token::S8: return os << "s8";
case token::U8: return os << "u8";
case token::S16: return os << "s16";
case token::U16: return os << "u16";
case token::S32: return os << "s32";
case token::U32: return os << "u32";
case token::S64: return os << "s64";
case token::U64: return os << "u64";
case token::UnexpectedCharacter: return os << "Unexpected character `" << token.value.character << "`";
case token::UnexpectedEOF: return os << "Unexpected End Of File";
case token::InvalidInteger: return os << "Invalid Integer";
case token::EndOfFile: return os << "End Of File";
}
return os;
}
};
using token_t = enum token::type;
} // namespace furc
#endif // FURC_FRONT_TOKEN_HPP