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simgear/nasal/lex.c: show line and column if illegal character is found.

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Makes it easier to track down e.g. missing quotes in Nasal source within .xml
files.
This commit is contained in:
Julian Smith 2021-06-06 12:42:26 +01:00
parent 95239fea87
commit 0da173cfd8
1 changed files with 17 additions and 0 deletions
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17
simgear/nasal/lex.c
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@ -1,5 +1,7 @@
#include "parse.h" #include "parse.h"
#include <stdio.h>
// Static table of recognized lexemes in the language // Static table of recognized lexemes in the language
static const struct Lexeme { static const struct Lexeme {
char* str; char* str;
@ -391,6 +393,21 @@ void naLex(struct Parser* p)
newToken(p, i, TOK_SYMBOL, p->buf+i, symlen, 0); newToken(p, i, TOK_SYMBOL, p->buf+i, symlen, 0);
i += symlen; i += symlen;
} else { } else {
//const char* line_begin = p->buf;
int line = 1;
int column = 0;
for (int j=0; j<i; ++j) {
if (p->buf[j] == '\n') {
line += 1;
column = 0;
//line_begin = p->buf + j + 1;
}
else {
column += 1;
}
}
fprintf(stderr, "%s:%i: illegal character 0x%x at line=%i column=%i.\n",
__FILE__, __LINE__, c, line, column);
error(p, "illegal character", i); error(p, "illegal character", i);
} }
} }