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Switch to using FILE* and default YY_INPUT.

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Danila Fedorin 1 year ago
parent
commit
fe1e0a6de0
  1. 1
      code/compiler/13/CMakeLists.txt
  2. 55
      code/compiler/13/parse_driver.cpp
  3. 56
      code/compiler/13/parse_driver.hpp
  4. 18
      code/compiler/13/scanner.l

1
code/compiler/13/CMakeLists.txt

@ -37,6 +37,7 @@ add_executable(compiler
instruction.cpp instruction.hpp
graph.cpp graph.hpp
global_scope.cpp global_scope.hpp
parse_driver.cpp parse_driver.hpp
${BISON_parser_OUTPUTS}
${FLEX_scanner_OUTPUTS}
main.cpp

55
code/compiler/13/parse_driver.cpp

@ -0,0 +1,55 @@
#include "parse_driver.hpp"
#include "scanner.hpp"
#include <sstream>
bool parse_driver::run_parse() {
FILE* stream = fopen(file_name.c_str(), "r");
if(!stream) return false;
string_stream = std::ostringstream();
file_offset = 0;
line_offsets.push_back(0);
yyscan_t scanner;
yylex_init(&scanner);
yyset_in(stream, scanner);
yy::parser parser(scanner, *this);
parser();
yylex_destroy(scanner);
fclose(stream);
file_contents = string_stream.str();
return true;
}
void parse_driver::write(const char* buf, size_t len) {
string_stream.write(buf, len);
file_offset += len;
}
void parse_driver::mark_line() {
line_offsets.push_back(file_offset);
}
size_t parse_driver::get_index(int line, int column) {
assert(line > 0);
assert(line <= line_offsets.size());
size_t file_offset = line_offsets[line-1];
file_offset += column - 1;
return file_offset;
}
size_t parse_driver::get_line_end(int line) {
if(line > line_offsets.size()) return file_contents.size();
return get_index(line+1, 1);
}
void parse_driver::print_highlighted_location(std::ostream& stream, const yy::location& loc) {
size_t print_start = get_index(loc.begin.line, 1);
size_t highlight_start = get_index(loc.begin.line, loc.begin.column);
size_t highlight_end = get_index(loc.end.line, loc.end.column);
size_t print_end = get_line_end(loc.end.line);
const char* content = file_contents.c_str();
stream.write(content + print_start, highlight_start - print_start);
stream << "\033[4;31m";
stream.write(content + highlight_start, highlight_end - highlight_start);
stream << "\033[0m";
stream.write(content + highlight_end, print_end - highlight_end);
}

56
code/compiler/13/parse_driver.hpp

@ -13,7 +13,6 @@ void scanner_destroy(yyscan_t* scanner);
struct parse_driver {
std::string file_name;
std::ifstream file_stream;
std::ostringstream string_stream;
yy::location location;
@ -21,58 +20,17 @@ struct parse_driver {
std::vector<size_t> line_offsets;
definition_group global_defs;
std::string read_file;
std::string file_contents;
parse_driver(const std::string& file)
: file_name(file), file_offset(0) {}
bool run_parse() {
file_stream.open(file_name);
if(!file_stream.good()) return false;
line_offsets.push_back(0);
yyscan_t scanner;
scanner_init(this, &scanner);
yy::parser parser(scanner, *this);
parser();
scanner_destroy(&scanner);
read_file = string_stream.str();
return true;
}
int get() {
int new_char = file_stream.get();
if(new_char == EOF) return EOF;
file_offset++;
if(new_char == '\n') line_offsets.push_back(file_offset);
string_stream.put(new_char);
return new_char;
}
size_t get_index(int line, int column) {
assert(line > 0);
assert(line <= line_offsets.size());
size_t file_offset = line_offsets[line-1];
file_offset += column - 1;
return file_offset;
}
size_t get_line_end(int line) {
if(line > line_offsets.size()) return read_file.size();
return get_index(line+1, 1);
}
void print_highlighted_location(std::ostream& stream, const yy::location& loc) {
size_t print_start = get_index(loc.begin.line, 1);
size_t highlight_start = get_index(loc.begin.line, loc.begin.column);
size_t highlight_end = get_index(loc.end.line, loc.end.column);
size_t print_end = get_line_end(loc.end.line);
const char* content = read_file.c_str();
stream.write(content + print_start, highlight_start - print_start);
stream << "\033[4;31m";
stream.write(content + highlight_start, highlight_end - highlight_start);
stream << "\033[0m";
stream.write(content + highlight_end, print_end - highlight_end);
}
bool run_parse();
void write(const char* buff, size_t len);
void mark_line();
size_t get_index(int line, int column);
size_t get_line_end(int line);
void print_highlighted_location(std::ostream& stream, const yy::location& loc);
};
#define YY_DECL yy::parser::symbol_type yylex(yyscan_t yyscanner, parse_driver& drv)

18
code/compiler/13/scanner.l

@ -1,5 +1,6 @@
%option noyywrap
%option reentrant
%option header-file="scanner.hpp"
%{
#include <iostream>
@ -8,18 +9,12 @@
#include "parse_driver.hpp"
#include "parser.hpp"
#define YY_EXTRA_TYPE parse_driver*
#define YY_USER_ACTION drv.location.step(); drv.location.columns(yyleng);
#define YY_INPUT(buf,result,max_size) \
{ \
int c = yyextra->get(); \
result = (c == EOF) ? YY_NULL : (buf[0] = c, 1); \
}
#define YY_USER_ACTION drv.write(yytext, yyleng); drv.location.step(); drv.location.columns(yyleng);
%}
%%
\n { drv.location.lines(); }
\n { drv.location.lines(); drv.mark_line(); }
[ ]+ {}
\\ { return yy::parser::make_BACKSLASH(drv.location); }
\+ { return yy::parser::make_PLUS(drv.location); }
@ -49,10 +44,3 @@ in { return yy::parser::make_IN(drv.location); }
<<EOF>> { return yy::parser::make_YYEOF(drv.location); }
%%
void scanner_init(parse_driver* d, yyscan_t* scanner) {
yylex_init_extra(d, scanner);
}
void scanner_destroy(yyscan_t* scanner) {
yylex_destroy(*scanner);
}

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