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reset yylloc when yyless(0) is called

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Taeer Bar-Yam 2021-09-29 19:37:51 -04:00
parent fd01c48d34
commit f14660d5e2
1 changed files with 6 additions and 0 deletions
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6
src/libexpr/lexer.l
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@ -28,6 +28,8 @@ using namespace nix;
namespace nix { namespace nix {
// backup to recover from yyless(0)
YYLTYPE prev_yylloc;
static void initLoc(YYLTYPE * loc) static void initLoc(YYLTYPE * loc)
{ {
@ -38,6 +40,8 @@ static void initLoc(YYLTYPE * loc)
static void adjustLoc(YYLTYPE * loc, const char * s, size_t len) static void adjustLoc(YYLTYPE * loc, const char * s, size_t len)
{ {
prev_yylloc = *loc;
loc->first_line = loc->last_line; loc->first_line = loc->last_line;
loc->first_column = loc->last_column; loc->first_column = loc->last_column;
@ -210,6 +214,7 @@ or { return OR_KW; }
{HPATH_START}\$\{ { {HPATH_START}\$\{ {
PUSH_STATE(PATH_START); PUSH_STATE(PATH_START);
yyless(0); yyless(0);
*yylloc = prev_yylloc;
} }
<PATH_START>{PATH_SEG} { <PATH_START>{PATH_SEG} {
@ -265,6 +270,7 @@ or { return OR_KW; }
context (it may be ')', ';', or something of that sort) */ context (it may be ')', ';', or something of that sort) */
POP_STATE(); POP_STATE();
yyless(0); yyless(0);
*yylloc = prev_yylloc;
return PATH_END; return PATH_END;
} }