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// Coded by Ralf Westram (coder@reallysoft.de) in March 2011 //
// Institute of Microbiology (Technical University Munich) //
// http://www.arb-home.de/ //
#ifndef AISC_PARSER_H
#define AISC_PARSER_H
#ifndef AISC_TOKEN_H
#include "aisc_token.h"
#endif
#ifndef AISC_LOCATION_H
#include "aisc_location.h"
#endif
#ifndef AISC_INLINE_H
#include "aisc_inline.h"
#endif
#ifndef ATTRIBUTES_H
#include <attributes.h>
#endif
enum CommandType {
NO_COMMAND,
CT_IF = 1,
CT_ENDIF,
CT_ELSE,
CT_FOR,
CT_NEXT,
CT_ENDFOR,
CT_ELSEIF,
CT_FUNCTION,
CT_LABEL,
CT_OTHER_CMD,
};
struct Code {
Code *next;
char *str;
Location source;
CommandType command;
const Command *cmd;
mutable struct for_data *fd;
Code *IF;
Code *ELSE;
Code *ENDIF;
Code *FOR;
Code *NEXT;
Code *ENDFOR;
Code() {
memset(this, 0, sizeof(*this));
}
Code(const Code& other)
: next(other.next),
str(nulldup(other.str)),
source(other.source),
command(other.command),
cmd(other.cmd),
fd(other.fd),
IF(other.IF),
ELSE(other.ELSE),
ENDIF(other.ENDIF),
FOR(other.FOR),
NEXT(other.NEXT),
ENDFOR(other.ENDFOR)
{}
DECLARE_ASSIGNMENT_OPERATOR(Code);
~Code() {
delete next;
free(str);
}
void set_command(CommandType command_, const char *args) {
command = command_;
SKIP_SPACE_LF(args);
freedup(str, args);
}
void print_error_internal(const char *err, const char *launcher_file, int launcher_line) const {
source.print_error_internal(err, launcher_file, launcher_line);
}
void print_warning_internal(const char *warn, const char *launcher_file, int launcher_line) const {
source.print_warning_internal(warn, launcher_file, launcher_line);
}
};
class Parser : virtual Noncopyable {
// used to parse 'Data' and 'Code'
int lastchar;
const char *last_line_start;
Location loc;
int error_flag;
void get_byte(const char *& io) {
lastchar = *(io++);
if (is_LF(lastchar)) {
last_line_start = io;
++loc;
}
}
const char *currentLocation(const char *io);
void p_err(const char *io, const char *error);
void p_errf(const char *io, const char *formatString, ...) __ATTR__FORMAT_MEMBER(2);
void p_err_empty_braces(const char *io) { p_err(io, "{} found, missing contents"); }
void p_err_exp_line_terminator(const char *io) { p_err(io, "missing ',' or ';' or 'newline'"); }
void p_err_ill_atWord(const char *io) { p_err(io, "only header definitions may start with '@'"); }
void p_err_exp_atWord(const char *io) { p_err(io, "all words in header-definitions have to start with '@'"); }
void p_err_expected(const char *io, const char *expect) { p_errf(io, "Expected to see %s", expect); }
void p_err_exp_but_saw(const char *io, const char *expect, const char *saw) { p_errf(io, "Expected to see %s, but saw %s", expect, saw); }
void p_err_exp_string_but_saw(const char *io, const char *saw) { p_err_exp_but_saw(io, "string", saw); }
void p_err_exp_but_saw_EOF(const char *io, const char *expect) { p_err_exp_but_saw(io, expect, "end of file"); }
inline void expect_line_terminator(const char *in) {
if (!is_SEP_LF_EOS(lastchar)) p_err_exp_line_terminator(in);
}
void expect_and_skip_closing_brace(const char *& in, const char *openingBraceLocation) {
if (lastchar != '}') {
p_err_expected(in, "'}'");
fprintf(stderr, "%s: opening brace was here\n", openingBraceLocation);
}
get_byte(in);
}
void expect_and_skip(const char *& in, char expect) {
if (lastchar != expect) {
char buf[] = "'x'";
buf[1] = expect;
p_err_expected(in, buf);
}
get_byte(in);
}
void skip_over_spaces(const char *& in) { while (is_SPACE(lastchar)) get_byte(in); }
void skip_over_spaces_and_comments(const char *& in) {
skip_over_spaces(in);
if (lastchar == '#') { // comment -> skip rest of line
while (!is_LF_EOS(lastchar)) get_byte(in);
}
}
void skip_over_spaces_and_comments_multiple_lines(const char *& in) {
while (1) {
skip_over_spaces_and_comments(in);
if (!is_LF(lastchar)) break;
get_byte(in);
}
}
void copyWordTo(const char*& in, char*& out) {
while (!is_SPACE_SEP_LF_EOS(lastchar)) {
*(out++) = lastchar;
get_byte(in);
}
}
void copyTillQuotesTo(const char*& in, char*& out);
char *readWord(const char *& in);
char *SETSOURCE(const char *& in, enum TOKEN& foundTokenType);
char *parse_token(const char *& in, enum TOKEN& foundTokenType);
Token *parseBrace(const char *& in, const char *key);
TokenList *parseTokenList(const char *& in, class HeaderList& headerList);
public:
Parser() {
lastchar = ' ';
last_line_start = NULL;
error_flag = 0;
}
int get_sourceline() const { return loc.get_linenr(); }
const char *get_sourcename() const { return loc.get_path(); }
const Location& get_location() const { return loc; }
void set_source(const Location& other) {
aisc_assert(loc != other);
loc = other;
}
void set_source(const char *path, int linenumber) {
set_source(Location(linenumber, path));
}
void set_line_start(const char *start, int offset_in_line) {
last_line_start = start-offset_in_line;
lastchar = ' ';
}
TokenListBlock *parseTokenListBlock(const char *& in);
class Code *parse_program(const char *in, const char *filename);
};
#else
#error aisc_parser.h included twice
#endif // AISC_PARSER_H
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