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Rudimentary support for reporting the line number of syntax errors.

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This commit is contained in:
David Gibson 2005-10-19 16:00:31 +10:00
parent b4ac04952a
commit 86dbcbd1e4
2 changed files with 22 additions and 4 deletions
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19
dtc-lexer.l
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@ -18,7 +18,7 @@
* USA
*/
%option noyywrap nounput
%option noyywrap nounput yylineno
%x CELLDATA
%x BYTESTRING
@ -43,24 +43,30 @@ REFCHAR ({PROPCHAR}|{UNITCHAR}|[/@])
#define DPRINT(fmt, ...) do { } while (0)
#endif
%}
%%
\"[^"]*\" {
yylloc.first_line = yylineno;
DPRINT("String: %s\n", yytext);
yylval.data = data_copy_escape_string(yytext+1,
yyleng-2);
yylloc.first_line = yylineno;
return DT_STRING;
}
"/memreserve/" {
yylloc.first_line = yylineno;
DPRINT("Keyword: /memreserve/\n");
BEGIN(MEMRESERVE);
return DT_MEMRESERVE;
}
<MEMRESERVE>[0-9a-fA-F]+ {
yylloc.first_line = yylineno;
if (yyleng > 2*sizeof(yylval.addr)) {
fprintf(stderr, "Address value %s too large\n",
yytext);
@ -72,12 +78,14 @@ REFCHAR ({PROPCHAR}|{UNITCHAR}|[/@])
}
<MEMRESERVE>";" {
yylloc.first_line = yylineno;
DPRINT("/MEMRESERVE\n");
BEGIN(INITIAL);
return ';';
}
<CELLDATA>[0-9a-fA-F]+ {
yylloc.first_line = yylineno;
if (yyleng > 2*sizeof(yylval.cval)) {
fprintf(stderr,
"Cell value %s too long\n", yytext);
@ -88,36 +96,42 @@ REFCHAR ({PROPCHAR}|{UNITCHAR}|[/@])
}
<CELLDATA>">" {
yylloc.first_line = yylineno;
DPRINT("/CELLDATA\n");
BEGIN(INITIAL);
return '>';
}
<CELLDATA>\&{REFCHAR}* {
yylloc.first_line = yylineno;
DPRINT("Ref: %s\n", yytext+1);
yylval.str = strdup(yytext+1);
return DT_REF;
}
<BYTESTRING>[0-9a-fA-F]{2} {
yylloc.first_line = yylineno;
yylval.byte = strtol(yytext, NULL, 16);
DPRINT("Byte: %02x\n", (int)yylval.byte);
return DT_BYTE;
}
<BYTESTRING>"]" {
yylloc.first_line = yylineno;
DPRINT("/BYTESTRING\n");
BEGIN(INITIAL);
return ']';
}
{PROPCHAR}+ {
yylloc.first_line = yylineno;
DPRINT("PropName: %s\n", yytext);
yylval.str = strdup(yytext);
return DT_PROPNAME;
}
{PROPCHAR}+(@{UNITCHAR}+)? {
yylloc.first_line = yylineno;
DPRINT("NodeName: %s\n", yytext);
yylval.str = strdup(yytext);
return DT_NODENAME;
@ -125,6 +139,7 @@ REFCHAR ({PROPCHAR}|{UNITCHAR}|[/@])
[a-zA-Z_][a-zA-Z0-9_]*: {
yylloc.first_line = yylineno;
DPRINT("Label: %s\n", yytext);
yylval.str = strdup(yytext);
yylval.str[yyleng-1] = '\0';
@ -134,6 +149,7 @@ REFCHAR ({PROPCHAR}|{UNITCHAR}|[/@])
<*>{WS}+ /* eat whitespace */
<*>"/*"([^*]|\*+[^*/])*\*+"/" {
yylloc.first_line = yylineno;
DPRINT("Comment: %s\n", yytext);
/* eat comments */
}
@ -141,6 +157,7 @@ REFCHAR ({PROPCHAR}|{UNITCHAR}|[/@])
<*>"//".*\n /* eat line comments */
<*>. {
yylloc.first_line = yylineno;
switch (yytext[0]) {
case '<':
DPRINT("CELLDATA\n");