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Brain_Fuck
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code cleanup

main
Brett 2023-11-20 17:26:37 -05:00
parent 308f7876ba
commit 9402da5f79
7 changed files with 1569 additions and 258 deletions
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2
include/bf_mips_codegen.h
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@ -11,6 +11,6 @@
#include <bf_tokenizer.h>
#include <fstream>
void codegen(const std::vector<token_t>& tokens, std::ostream& out);
void codegen(tokenizer& tokenizer, std::ostream& out);
#endif //BRAINFUCK_MISC_BF_MIPS_CODEGEN_H

48
include/bf_tokenizer.h
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@ -27,13 +27,53 @@ enum class bf_token
struct token_t
{
bf_token token;
std::optional<std::string> name = {};
std::optional<uint64_t> name = {};
explicit token_t(bf_token token): token(token) {}
explicit token_t(bf_token token): token(token)
{}
};
std::vector<token_t> tokenize(const std::string& program);
std::vector<token_t>& bf_name(std::vector<token_t>& tokens);
typedef std::optional<std::reference_wrapper<const token_t>> optional_token;
class tokenizer
{
private:
std::vector<token_t> tokens;
size_t conditionalCount = 0;
size_t currentIndex = 0;
void tokenize(const std::string& program);
void bf_name();
public:
explicit tokenizer(const std::string& program)
{
tokenize(program);
bf_name();
}
inline bool hasNext(){
return currentIndex < tokens.size();
}
inline void advance(){
currentIndex++;
}
inline optional_token next() {
if (currentIndex >= tokens.size())
return {};
return tokens[currentIndex++];
}
inline optional_token peek(){
if (currentIndex >= tokens.size())
return {};
return tokens[currentIndex];
}
void print(size_t index = 0);
};
#endif //BRAINFUCK_MISC_BF_TOKENIZER_H

1587
mips.asm
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File diff suppressed because it is too large Load Diff

8
squares.bf Normal file
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@ -0,0 +1,8 @@
++++[>+++++<-]>[<+++++>-]+<+[
>[>+>+<<-]++>>[<<+>>-]>>>[-]++>[-]+
>>>+[[-]++++++>>>]<<<[[<++++++++<++>>-]+<.<[>----<-]<]
<<[>>>>>[>>>[-]+++++++++<[>-<-]+++++++++>[-[<->-]+[<<<]]<[>+<-]>]<<-]<<-
]
[Outputs square numbers from 0 to 10000.
Daniel B Cristofani (cristofdathevanetdotcom)
http://www.hevanet.com/cristofd/brainfuck/]

75
src/bf_mips_codegen.cpp
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@ -27,22 +27,22 @@ std::string preamble = ".data\n"
void process_print(const std::vector<token_t>& tokens, size_t index);
void codegen(const std::vector<token_t>& tokens, std::ostream& out)
void codegen(tokenizer& tokenizer, std::ostream& out)
{
out << preamble;
size_t index = 0;
// skip past comments
if (tokens[index].token == bf_token::OPEN)
if (tokenizer.next().value().get().token == bf_token::OPEN)
while (tokens[index].token != bf_token::CLOSE)
index++;
process_print(tokens, index);
tokenizer.print(index);
size_t sp = 0;
while (index < tokens.size())
{
auto& token = tokens[index++];
std::string name{"UNNAMED"};
uint64_t name = 0;
if (token.name.has_value())
name = token.name.value();
switch (token.token)
@ -75,76 +75,17 @@ void codegen(const std::vector<token_t>& tokens, std::ostream& out)
break;
case bf_token::OPEN:
out << "\tlb $t1, ($t0)\n"
<< "\tbeqz $t1, BF_CLOSE_" << name << "_" << std::to_string(sp) << '\n'
<< "BF_OPEN_" << name << "_" << std::to_string(sp) << ":\n";
<< "\tbeqz $t1, BF_CLOSE_" << name << "_" << sp << '\n'
<< "BF_OPEN_" << name << "_" << sp << ":\n";
sp++;
break;
case bf_token::CLOSE:
sp--;
out << "\tlb $t1, ($t0)\n"
<< "\tbnez $t1, BF_OPEN_" << name << "_" << std::to_string(sp) << '\n'
<< "BF_CLOSE_" << name << "_" << std::to_string(sp) << ":\n";
<< "\tbnez $t1, BF_OPEN_" << name << "_" << sp << '\n'
<< "BF_CLOSE_" << name << "_" << sp << ":\n";
break;
}
}
}
inline void tabulate(size_t v)
{
for (size_t i = 0; i < v; i++)
std::cout << '\t';
}
void process_print(const std::vector<token_t>& tokens, size_t index)
{
size_t sp = 0;
while (index < tokens.size())
{
auto& token = tokens[index++];
switch (token.token)
{
case bf_token::INC_DP:
tabulate(sp);
std::cout << "Increase DP\n";
break;
case bf_token::DEC_DP:
tabulate(sp);
std::cout << "Decrease DP\n";
break;
case bf_token::INC_DV:
tabulate(sp);
std::cout << "Increase DV\n";
break;
case bf_token::DEC_DV:
tabulate(sp);
std::cout << "Decrease DV\n";
break;
case bf_token::PRINT:
tabulate(sp);
std::cout << "Print\n";
break;
case bf_token::READ:
tabulate(sp);
std::cout << "Read\n";
break;
case bf_token::OPEN:
tabulate(sp);
std::cout << "If(";
if (token.name.has_value())
std::cout << token.name.value() << "\n";
else
std::cout << "UNNAMED" << "\n";
sp++;
break;
case bf_token::CLOSE:
sp--;
tabulate(sp);
if (token.name.has_value())
std::cout << token.name.value();
else
std::cout << "UNNAMED";
std::cout << ")\n";
break;
}
}
}

100
src/bf_tokenizer.cpp
View File

@ -6,11 +6,25 @@
#include <bf_tokenizer.h>
#include <sstream>
#include <random>
#include <iostream>
std::vector<token_t> tokenize(const std::string& program)
std::string generateName()
{
std::vector<token_t> tokens;
std::stringstream ss;
ss << std::hex;
static std::random_device rd;
static std::seed_seq seed{rd(), rd(), rd(), rd()};
static std::mt19937_64 gen(seed);
static std::uniform_int_distribution<int> dis(0, 15);
for (int i = 0; i < 24; i++)
ss << dis(gen);
return ss.str();
}
void tokenizer::tokenize(const std::string& program)
{
size_t index = 0;
while (index < program.size())
{
@ -46,33 +60,16 @@ std::vector<token_t> tokenize(const std::string& program)
}
index++;
}
return tokens;
}
std::string generateName()
{
std::stringstream ss;
ss << std::hex;
std::random_device rd;
std::seed_seq seed{rd(), rd(), rd(), rd()};
std::mt19937_64 gen(seed);
std::uniform_int_distribution<int> dis(0, 15);
for (int i = 0; i < 24; i++)
ss << dis(gen);
return ss.str();
}
std::vector<token_t>& bf_name(std::vector<token_t>& tokens)
void tokenizer::bf_name()
{
size_t search_index = 0;
while (search_index < tokens.size())
{
if (tokens[search_index].token == bf_token::OPEN)
{
auto name = generateName();
auto name = ++conditionalCount;
size_t sp = 1;
size_t search_2 = search_index;
tokens[search_index].name = name;
@ -89,5 +86,64 @@ std::vector<token_t>& bf_name(std::vector<token_t>& tokens)
}
search_index++;
}
return tokens;
}
inline void tabulate(signed long long v)
{
for (signed long long i = 0; i < v; i++)
std::cout << '\t';
}
void tokenizer::print(size_t index)
{
signed long long sp = 1;
while (index < tokens.size())
{
auto& token = tokens[index++];
switch (token.token)
{
case bf_token::INC_DP:
tabulate(sp);
std::cout << "Increase DP\n";
break;
case bf_token::DEC_DP:
tabulate(sp);
std::cout << "Decrease DP\n";
break;
case bf_token::INC_DV:
tabulate(sp);
std::cout << "Increase DV\n";
break;
case bf_token::DEC_DV:
tabulate(sp);
std::cout << "Decrease DV\n";
break;
case bf_token::PRINT:
tabulate(sp);
std::cout << "Print\n";
break;
case bf_token::READ:
tabulate(sp);
std::cout << "Read\n";
break;
case bf_token::OPEN:
tabulate(sp);
std::cout << "If(";
if (token.name.has_value())
std::cout << token.name.value() << "\n";
else
std::cout << "UNNAMED" << "\n";
sp++;
break;
case bf_token::CLOSE:
sp--;
tabulate(sp);
if (token.name.has_value())
std::cout << token.name.value();
else
std::cout << "UNNAMED";
std::cout << ")\n";
break;
}
}
}

7
src/main.cpp
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@ -8,16 +8,15 @@
int main(int argc, const char** argv)
{
std::string file{"../helloworld.bf"};
std::string file{"../life.bf"};
if (argc > 1)
file = argv[1];
auto program = blt::fs::loadBrainFuckFile(file);
std::ofstream out{"../mips.asm"};
auto tokens = tokenize(program);
bf_name(tokens);
codegen(tokens, out);
tokenizer tokenizer(program);
codegen(tokenizer, out);
return 0;
}