Add copy of part 2 project for part 3
This commit is contained in:
parent
6d280731e4
commit
cf3d2f5d8b
|
|
@ -0,0 +1,128 @@
|
|||
#pragma once
|
||||
#include <memory>
|
||||
#include <vector>
|
||||
|
||||
struct ast {
|
||||
virtual ~ast() = default;
|
||||
};
|
||||
|
||||
using ast_ptr = std::unique_ptr<ast>;
|
||||
|
||||
struct pattern {
|
||||
virtual ~pattern() = default;
|
||||
};
|
||||
|
||||
using pattern_ptr = std::unique_ptr<pattern>;
|
||||
|
||||
struct branch {
|
||||
pattern_ptr pat;
|
||||
ast_ptr expr;
|
||||
|
||||
branch(pattern_ptr p, ast_ptr a)
|
||||
: pat(std::move(p)), expr(std::move(a)) {}
|
||||
};
|
||||
|
||||
using branch_ptr = std::unique_ptr<branch>;
|
||||
|
||||
struct constructor {
|
||||
std::string name;
|
||||
std::vector<std::string> types;
|
||||
|
||||
constructor(std::string n, std::vector<std::string> ts)
|
||||
: name(std::move(n)), types(std::move(ts)) {}
|
||||
};
|
||||
|
||||
using constructor_ptr = std::unique_ptr<constructor>;
|
||||
|
||||
struct definition {
|
||||
virtual ~definition() = default;
|
||||
};
|
||||
|
||||
using definition_ptr = std::unique_ptr<definition>;
|
||||
|
||||
enum binop {
|
||||
PLUS,
|
||||
MINUS,
|
||||
TIMES,
|
||||
DIVIDE
|
||||
};
|
||||
|
||||
struct ast_int : public ast {
|
||||
int value;
|
||||
|
||||
explicit ast_int(int v)
|
||||
: value(v) {}
|
||||
};
|
||||
|
||||
struct ast_lid : public ast {
|
||||
std::string id;
|
||||
|
||||
explicit ast_lid(std::string i)
|
||||
: id(std::move(i)) {}
|
||||
};
|
||||
|
||||
struct ast_uid : public ast {
|
||||
std::string id;
|
||||
|
||||
explicit ast_uid(std::string i)
|
||||
: id(std::move(i)) {}
|
||||
};
|
||||
|
||||
struct ast_binop : public ast {
|
||||
binop op;
|
||||
ast_ptr left;
|
||||
ast_ptr right;
|
||||
|
||||
ast_binop(binop o, ast_ptr l, ast_ptr r)
|
||||
: op(o), left(std::move(l)), right(std::move(r)) {}
|
||||
};
|
||||
|
||||
struct ast_app : public ast {
|
||||
ast_ptr left;
|
||||
ast_ptr right;
|
||||
|
||||
ast_app(ast_ptr l, ast_ptr r)
|
||||
: left(std::move(l)), right(std::move(r)) {}
|
||||
};
|
||||
|
||||
struct ast_case : public ast {
|
||||
ast_ptr of;
|
||||
std::vector<branch_ptr> branches;
|
||||
|
||||
ast_case(ast_ptr o, std::vector<branch_ptr> b)
|
||||
: of(std::move(o)), branches(std::move(b)) {}
|
||||
};
|
||||
|
||||
struct pattern_var : public pattern {
|
||||
std::string var;
|
||||
|
||||
pattern_var(std::string v)
|
||||
: var(std::move(v)) {}
|
||||
};
|
||||
|
||||
struct pattern_constr : public pattern {
|
||||
std::string constr;
|
||||
std::vector<std::string> params;
|
||||
|
||||
pattern_constr(std::string c, std::vector<std::string> p)
|
||||
: constr(std::move(c)), params(std::move(p)) {}
|
||||
};
|
||||
|
||||
struct definition_defn : public definition {
|
||||
std::string name;
|
||||
std::vector<std::string> params;
|
||||
ast_ptr body;
|
||||
|
||||
definition_defn(std::string n, std::vector<std::string> p, ast_ptr b)
|
||||
: name(std::move(n)), params(std::move(p)), body(std::move(b)) {
|
||||
|
||||
}
|
||||
};
|
||||
|
||||
struct definition_data : public definition {
|
||||
std::string name;
|
||||
std::vector<constructor_ptr> constructors;
|
||||
|
||||
definition_data(std::string n, std::vector<constructor_ptr> cs)
|
||||
: name(std::move(n)), constructors(std::move(cs)) {}
|
||||
};
|
||||
|
|
@ -0,0 +1 @@
|
|||
rm -f parser.o parser.cpp parser.hpp stack.hh scanner.cpp scanner.o type.o a.out
|
||||
|
|
@ -0,0 +1,6 @@
|
|||
bison -o parser.cpp -d parser.y
|
||||
flex -o scanner.cpp scanner.l
|
||||
g++ -c -o scanner.o scanner.cpp
|
||||
g++ -c -o parser.o parser.cpp
|
||||
g++ -c -o type.o type.cpp
|
||||
g++ main.cpp parser.o scanner.o type.o
|
||||
|
|
@ -0,0 +1,15 @@
|
|||
#include "ast.hpp"
|
||||
#include "parser.hpp"
|
||||
#include "type.hpp"
|
||||
|
||||
void yy::parser::error(const std::string& msg) {
|
||||
std::cout << "An error occured: " << msg << std::endl;
|
||||
}
|
||||
|
||||
extern std::vector<definition_ptr> program;
|
||||
|
||||
int main() {
|
||||
yy::parser parser;
|
||||
parser.parse();
|
||||
std::cout << program.size() << std::endl;
|
||||
}
|
||||
|
|
@ -0,0 +1,135 @@
|
|||
%{
|
||||
#include <string>
|
||||
#include <iostream>
|
||||
#include "ast.hpp"
|
||||
#include "parser.hpp"
|
||||
|
||||
std::vector<definition_ptr> program;
|
||||
extern yy::parser::symbol_type yylex();
|
||||
|
||||
%}
|
||||
|
||||
%token PLUS
|
||||
%token TIMES
|
||||
%token MINUS
|
||||
%token DIVIDE
|
||||
%token <int> INT
|
||||
%token DEFN
|
||||
%token DATA
|
||||
%token CASE
|
||||
%token OF
|
||||
%token OCURLY
|
||||
%token CCURLY
|
||||
%token OPAREN
|
||||
%token CPAREN
|
||||
%token COMMA
|
||||
%token ARROW
|
||||
%token EQUAL
|
||||
%token <std::string> LID
|
||||
%token <std::string> UID
|
||||
|
||||
%language "c++"
|
||||
%define api.value.type variant
|
||||
%define api.token.constructor
|
||||
|
||||
%type <std::vector<std::string>> lowercaseParams
|
||||
%type <std::vector<definition_ptr>> program definitions
|
||||
%type <std::vector<branch_ptr>> branches
|
||||
%type <std::vector<constructor_ptr>> constructors
|
||||
%type <ast_ptr> aAdd aMul case app appBase
|
||||
%type <definition_ptr> definition defn data
|
||||
%type <branch_ptr> branch
|
||||
%type <pattern_ptr> pattern
|
||||
%type <constructor_ptr> constructor
|
||||
|
||||
%start program
|
||||
|
||||
%%
|
||||
|
||||
program
|
||||
: definitions { program = std::move($1); }
|
||||
;
|
||||
|
||||
definitions
|
||||
: definitions definition { $$ = std::move($1); $$.push_back(std::move($2)); }
|
||||
| definition { $$ = std::vector<definition_ptr>(); $$.push_back(std::move($1)); }
|
||||
;
|
||||
|
||||
definition
|
||||
: defn { $$ = std::move($1); }
|
||||
| data { $$ = std::move($1); }
|
||||
;
|
||||
|
||||
defn
|
||||
: DEFN LID lowercaseParams EQUAL OCURLY aAdd CCURLY
|
||||
{ $$ = definition_ptr(
|
||||
new definition_defn(std::move($2), std::move($3), std::move($6))); }
|
||||
;
|
||||
|
||||
lowercaseParams
|
||||
: %empty { $$ = std::vector<std::string>(); }
|
||||
| lowercaseParams LID { $$ = std::move($1); $$.push_back(std::move($2)); }
|
||||
;
|
||||
|
||||
aAdd
|
||||
: aAdd PLUS aMul { $$ = ast_ptr(new ast_binop(PLUS, std::move($1), std::move($3))); }
|
||||
| aAdd MINUS aMul { $$ = ast_ptr(new ast_binop(MINUS, std::move($1), std::move($3))); }
|
||||
| aMul { $$ = std::move($1); }
|
||||
;
|
||||
|
||||
aMul
|
||||
: aMul TIMES app { $$ = ast_ptr(new ast_binop(TIMES, std::move($1), std::move($3))); }
|
||||
| aMul DIVIDE app { $$ = ast_ptr(new ast_binop(DIVIDE, std::move($1), std::move($3))); }
|
||||
| app { $$ = std::move($1); }
|
||||
;
|
||||
|
||||
app
|
||||
: app appBase { $$ = ast_ptr(new ast_app(std::move($1), std::move($2))); }
|
||||
| appBase { $$ = std::move($1); }
|
||||
;
|
||||
|
||||
appBase
|
||||
: INT { $$ = ast_ptr(new ast_int($1)); }
|
||||
| LID { $$ = ast_ptr(new ast_lid(std::move($1))); }
|
||||
| UID { $$ = ast_ptr(new ast_uid(std::move($1))); }
|
||||
| OPAREN aAdd CPAREN { $$ = std::move($2); }
|
||||
| case { $$ = std::move($1); }
|
||||
;
|
||||
|
||||
case
|
||||
: CASE aAdd OF OCURLY branches CCURLY
|
||||
{ $$ = ast_ptr(new ast_case(std::move($2), std::move($5))); }
|
||||
;
|
||||
|
||||
branches
|
||||
: branches COMMA branch { $$ = std::move($1); $1.push_back(std::move($3)); }
|
||||
| branch { $$ = std::vector<branch_ptr>(); $$.push_back(std::move($1));}
|
||||
;
|
||||
|
||||
branch
|
||||
: pattern ARROW OCURLY aAdd CCURLY
|
||||
{ $$ = branch_ptr(new branch(std::move($1), std::move($4))); }
|
||||
;
|
||||
|
||||
pattern
|
||||
: LID { $$ = pattern_ptr(new pattern_var(std::move($1))); }
|
||||
| UID lowercaseParams
|
||||
{ $$ = pattern_ptr(new pattern_constr(std::move($1), std::move($2))); }
|
||||
;
|
||||
|
||||
data
|
||||
: DATA UID EQUAL OCURLY constructors CCURLY
|
||||
{ $$ = definition_ptr(new definition_data(std::move($2), std::move($5))); }
|
||||
;
|
||||
|
||||
constructors
|
||||
: constructors COMMA constructor { $$ = std::move($1); $$.push_back(std::move($3)); }
|
||||
| constructor
|
||||
{ $$ = std::vector<constructor_ptr>(); $$.push_back(std::move($1)); }
|
||||
;
|
||||
|
||||
constructor
|
||||
: UID lowercaseParams
|
||||
{ $$ = constructor_ptr(new constructor(std::move($1), std::move($2))); }
|
||||
;
|
||||
|
||||
|
|
@ -0,0 +1,34 @@
|
|||
%option noyywrap
|
||||
|
||||
%{
|
||||
#include <iostream>
|
||||
#include "ast.hpp"
|
||||
#include "parser.hpp"
|
||||
|
||||
#define YY_DECL yy::parser::symbol_type yylex()
|
||||
|
||||
%}
|
||||
|
||||
%%
|
||||
|
||||
[ \n]+ {}
|
||||
\+ { return yy::parser::make_PLUS(); }
|
||||
\* { return yy::parser::make_TIMES(); }
|
||||
- { return yy::parser::make_MINUS(); }
|
||||
\/ { return yy::parser::make_DIVIDE(); }
|
||||
[0-9]+ { return yy::parser::make_INT(atoi(yytext)); }
|
||||
defn { return yy::parser::make_DEFN(); }
|
||||
data { return yy::parser::make_DATA(); }
|
||||
case { return yy::parser::make_CASE(); }
|
||||
of { return yy::parser::make_OF(); }
|
||||
\{ { return yy::parser::make_OCURLY(); }
|
||||
\} { return yy::parser::make_CCURLY(); }
|
||||
\( { return yy::parser::make_OPAREN(); }
|
||||
\) { return yy::parser::make_CPAREN(); }
|
||||
, { return yy::parser::make_COMMA(); }
|
||||
-> { return yy::parser::make_ARROW(); }
|
||||
= { return yy::parser::make_EQUAL(); }
|
||||
[a-z][a-zA-Z]* { return yy::parser::make_LID(std::string(yytext)); }
|
||||
[A-Z][a-zA-Z]* { return yy::parser::make_UID(std::string(yytext)); }
|
||||
|
||||
%%
|
||||
Loading…
Reference in New Issue