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Updated parser/src/scanner.c to be splitted

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Maieul BOYER 2024-09-02 17:43:53 +02:00
parent 78a595ef60
commit b2440780fb
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11 changed files with 415 additions and 363 deletions
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334
parser/src/scanner.c
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@ -1,334 +0,0 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* scanner.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/09/01 14:17:17 by maiboyer #+# #+# */
/* Updated: 2024/09/02 16:25:19 by maiboyer ### ########.fr */
/* */
/* ************************************************************************** */
#include "parser/inner/scanner.h"
#include "me/char/char.h"
#include "me/mem/mem.h"
#include "me/string/string.h"
#include "me/types.h"
#include "me/vec/vec_heredoc.h"
#include "parser/inner/heredoc.h"
#include "parser/parser.h"
#include <assert.h>
bool scan(t_scanner *scanner, TSLexer *lexer, const bool *valid_symbols)
{
if (valid_symbols[CONCAT] && !valid_symbols[ERROR_RECOVERY])
{
if (!(lexer->lookahead == 0 || me_isspace(lexer->lookahead) || lexer->lookahead == '>' || lexer->lookahead == '<' ||
lexer->lookahead == ')' || lexer->lookahead == '(' || lexer->lookahead == ';' || lexer->lookahead == '&' ||
lexer->lookahead == '|' || lexer->lookahead == '{' || lexer->lookahead == '}'))
{
lexer->result_symbol = CONCAT;
if (lexer->lookahead == '`')
{
lexer->mark_end(lexer);
lexer->advance(lexer, false);
while (lexer->lookahead != '`' && !lexer->eof(lexer))
lexer->advance(lexer, false);
if (lexer->eof(lexer))
return false;
if (lexer->lookahead == '`')
lexer->advance(lexer, false);
return me_isspace(lexer->lookahead) || lexer->eof(lexer);
}
if (lexer->lookahead == '\\')
{
lexer->mark_end(lexer);
lexer->advance(lexer, false);
if (lexer->lookahead == '"' || lexer->lookahead == '\'' || lexer->lookahead == '\\')
return true;
if (lexer->eof(lexer))
return false;
}
else
return true;
}
}
if (valid_symbols[IMMEDIATE_DOUBLE_HASH] && !valid_symbols[ERROR_RECOVERY])
{
if (lexer->lookahead == '#')
{
lexer->mark_end(lexer);
lexer->advance(lexer, false);
if (lexer->lookahead == '#')
{
lexer->advance(lexer, false);
if (lexer->lookahead != '}')
{
lexer->result_symbol = IMMEDIATE_DOUBLE_HASH;
lexer->mark_end(lexer);
return true;
}
}
}
}
if (valid_symbols[EMPTY_VALUE] &&
(me_isspace(lexer->lookahead) || lexer->eof(lexer) || lexer->lookahead == ';' || lexer->lookahead == '&'))
return (lexer->result_symbol = EMPTY_VALUE, true);
if ((valid_symbols[HEREDOC_BODY_BEGINNING] || valid_symbols[SIMPLE_HEREDOC_BODY]) && scanner->heredocs.len > 0 &&
!vec_heredoc_last(&scanner->heredocs)->started && !valid_symbols[ERROR_RECOVERY])
return scan_heredoc_content(scanner, lexer, HEREDOC_BODY_BEGINNING, SIMPLE_HEREDOC_BODY);
if (valid_symbols[HEREDOC_END] && scanner->heredocs.len > 0 && scan_heredoc_end_identifier(vec_heredoc_last(&scanner->heredocs), lexer))
{
t_heredoc *heredoc = vec_heredoc_last(&scanner->heredocs);
string_free(heredoc->current_leading_word);
string_free(heredoc->delimiter);
(void)vec_heredoc_pop(&scanner->heredocs, NULL);
return (lexer->result_symbol = HEREDOC_END, true);
}
if (valid_symbols[HEREDOC_CONTENT] && scanner->heredocs.len > 0 && vec_heredoc_last(&scanner->heredocs)->started &&
!valid_symbols[ERROR_RECOVERY])
return scan_heredoc_content(scanner, lexer, HEREDOC_CONTENT, HEREDOC_END);
if (valid_symbols[HEREDOC_START] && !valid_symbols[ERROR_RECOVERY] && scanner->heredocs.len > 0)
return scan_heredoc_start(vec_heredoc_last(&scanner->heredocs), lexer);
if ((valid_symbols[VARIABLE_NAME] || valid_symbols[FILE_DESCRIPTOR] || valid_symbols[HEREDOC_ARROW]) && !valid_symbols[ERROR_RECOVERY])
{
while (true)
{
if ((lexer->lookahead == ' ' || lexer->lookahead == '\t' || lexer->lookahead == '\r' ||
(lexer->lookahead == '\n' && !valid_symbols[NEWLINE])) &&
!valid_symbols[EXPANSION_WORD])
{
lexer->advance(lexer, true);
}
else if (lexer->lookahead == '\\')
{
lexer->advance(lexer, true);
if (lexer->eof(lexer))
{
lexer->mark_end(lexer);
lexer->result_symbol = VARIABLE_NAME;
return true;
}
if (lexer->lookahead == '\r')
lexer->advance(lexer, true);
if (lexer->lookahead == '\n')
lexer->advance(lexer, true);
else
{
if (lexer->lookahead == '\\' && valid_symbols[EXPANSION_WORD])
goto expansion_word;
return false;
}
}
else
break;
}
// no '*', '@', '?', '-', '$', '0', '_'
if (!valid_symbols[EXPANSION_WORD] && (lexer->lookahead == '*' || lexer->lookahead == '@' || lexer->lookahead == '?' ||
lexer->lookahead == '-' || lexer->lookahead == '0' || lexer->lookahead == '_'))
{
lexer->mark_end(lexer);
lexer->advance(lexer, false);
if (lexer->lookahead == '=' || lexer->lookahead == '[' || lexer->lookahead == ':' || lexer->lookahead == '-' ||
lexer->lookahead == '%' || lexer->lookahead == '#' || lexer->lookahead == '/')
return false;
if (valid_symbols[EXTGLOB_PATTERN] && me_isspace(lexer->lookahead))
{
lexer->mark_end(lexer);
lexer->result_symbol = EXTGLOB_PATTERN;
return true;
}
}
if (valid_symbols[HEREDOC_ARROW] && lexer->lookahead == '<')
{
lexer->advance(lexer, false);
if (lexer->lookahead == '<')
{
lexer->advance(lexer, false);
if (lexer->lookahead == '-')
{
lexer->advance(lexer, false);
t_heredoc heredoc = heredoc_new();
heredoc.allows_indent = true;
vec_heredoc_push(&scanner->heredocs, heredoc);
lexer->result_symbol = HEREDOC_ARROW_DASH;
}
else
{
t_heredoc heredoc = heredoc_new();
vec_heredoc_push(&scanner->heredocs, heredoc);
lexer->result_symbol = HEREDOC_ARROW;
}
return true;
}
return false;
}
bool is_number = true;
if (me_isdigit(lexer->lookahead))
lexer->advance(lexer, false);
else if (me_isalpha(lexer->lookahead) || lexer->lookahead == '_')
{
is_number = false;
lexer->advance(lexer, false);
}
else
{
if (lexer->lookahead == '{')
goto brace_start;
if (valid_symbols[EXPANSION_WORD])
goto expansion_word;
if (valid_symbols[EXTGLOB_PATTERN])
goto extglob_pattern;
return false;
}
while (true)
{
if (me_isdigit(lexer->lookahead))
lexer->advance(lexer, false);
else if (me_isalpha(lexer->lookahead) || lexer->lookahead == '_')
{
is_number = false;
lexer->advance(lexer, false);
}
else
break;
}
if (is_number && valid_symbols[FILE_DESCRIPTOR] && (lexer->lookahead == '>' || lexer->lookahead == '<'))
{
lexer->result_symbol = FILE_DESCRIPTOR;
return true;
}
if (valid_symbols[VARIABLE_NAME])
{
if (lexer->lookahead == '+')
{
lexer->mark_end(lexer);
lexer->advance(lexer, false);
if (lexer->lookahead == '=' || lexer->lookahead == ':')
{
lexer->result_symbol = VARIABLE_NAME;
return true;
}
return false;
}
if (lexer->lookahead == '/')
{
return false;
}
if (lexer->lookahead == '=' || lexer->lookahead == '[' || (lexer->lookahead == ':' && !valid_symbols[OPENING_PAREN]) ||
lexer->lookahead == '%' || (lexer->lookahead == '#' && !is_number) || lexer->lookahead == '@' || (lexer->lookahead == '-'))
{
lexer->mark_end(lexer);
lexer->result_symbol = VARIABLE_NAME;
return true;
}
if (lexer->lookahead == '?')
{
lexer->mark_end(lexer);
lexer->advance(lexer, false);
lexer->result_symbol = VARIABLE_NAME;
return me_isalpha(lexer->lookahead);
}
}
return false;
}
if (valid_symbols[BARE_DOLLAR] && !valid_symbols[ERROR_RECOVERY] && scan_bare_dollar(lexer))
return true;
extglob_pattern:
expansion_word:
if (valid_symbols[EXPANSION_WORD])
{
bool advanced_once = false;
bool advance_once_space = false;
while (true)
{
if (lexer->lookahead == '\"')
return false;
if (lexer->lookahead == '$')
{
lexer->mark_end(lexer);
lexer->advance(lexer, false);
if (lexer->lookahead == '{' || lexer->lookahead == '(' || lexer->lookahead == '\'' || me_isalnum(lexer->lookahead))
{
lexer->result_symbol = EXPANSION_WORD;
return advanced_once;
}
advanced_once = true;
}
if (lexer->lookahead == '}')
{
lexer->mark_end(lexer);
lexer->result_symbol = EXPANSION_WORD;
return advanced_once || advance_once_space;
}
if (lexer->lookahead == '(' && !(advanced_once || advance_once_space))
{
lexer->mark_end(lexer);
lexer->advance(lexer, false);
while (lexer->lookahead != ')' && !lexer->eof(lexer))
{
if (lexer->lookahead == '$')
{
lexer->mark_end(lexer);
lexer->advance(lexer, false);
if (lexer->lookahead == '{' || lexer->lookahead == '(' || lexer->lookahead == '\'' || me_isalnum(lexer->lookahead))
{
lexer->result_symbol = EXPANSION_WORD;
return advanced_once;
}
advanced_once = true;
}
else
{
advanced_once = advanced_once || !me_isspace(lexer->lookahead);
advance_once_space = advance_once_space || me_isspace(lexer->lookahead);
lexer->advance(lexer, false);
}
}
lexer->mark_end(lexer);
if (lexer->lookahead == ')')
{
advanced_once = true;
lexer->advance(lexer, false);
lexer->mark_end(lexer);
if (lexer->lookahead == '}')
return false;
}
else
return false;
}
if (lexer->lookahead == '\'')
return false;
if (lexer->eof(lexer))
return false;
advanced_once = advanced_once || !me_isspace(lexer->lookahead);
advance_once_space = advance_once_space || me_isspace(lexer->lookahead);
lexer->advance(lexer, false);
}
}
brace_start:
return false;
}