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| author | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2016-01-20 16:34:42 +0100 |
|---|---|---|
| committer | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2016-01-20 16:34:42 +0100 |
| commit | 5d8b7eb3e1f6030dfb1677af7a6ca9e2f1ebc11a (patch) | |
| tree | a3f1db7dc4c77a0c4bc969ce3423294f5bbf7bc2 /src/libexpr/lexer.l | |
| parent | 84e01203a72e8b8b5fefea93ed4a8dbdaef519ea (diff) | |
Revert "Revert "next try for "don't abort when given unmatched '}' with 'start-condition stack underflow'. This fixes #751"""
This reverts commit b669d3d2e83d3c50238751b57cff3ed0ca39bc8a.
Diffstat (limited to 'src/libexpr/lexer.l')
| -rw-r--r-- | src/libexpr/lexer.l | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/src/libexpr/lexer.l b/src/libexpr/lexer.l index 1f2957ec7..478f41641 100644 --- a/src/libexpr/lexer.l +++ b/src/libexpr/lexer.l @@ -8,6 +8,7 @@ %x STRING %x IND_STRING +%x INSIDE_DOLLAR_CURLY %{ @@ -93,6 +94,8 @@ URI [a-zA-Z][a-zA-Z0-9\+\-\.]*\:[a-zA-Z0-9\%\/\?\:\@\&\=\+\$\,\-\_\.\!\~ %% +<INITIAL,INSIDE_DOLLAR_CURLY>{ + if { return IF; } then { return THEN; } @@ -124,11 +127,15 @@ or { return OR_KW; } return INT; } -\$\{ { PUSH_STATE(INITIAL); return DOLLAR_CURLY; } -\{ { PUSH_STATE(INITIAL); return '{'; } -\} { POP_STATE(); return '}'; } +\$\{ { PUSH_STATE(INSIDE_DOLLAR_CURLY); return DOLLAR_CURLY; } +} + +\} { return '}'; } +<INSIDE_DOLLAR_CURLY>\} { POP_STATE(); return '}'; } +\{ { return '{'; } +<INSIDE_DOLLAR_CURLY>\{ { PUSH_STATE(INSIDE_DOLLAR_CURLY); return '{'; } -\" { PUSH_STATE(STRING); return '"'; } +<INITIAL,INSIDE_DOLLAR_CURLY>\" { PUSH_STATE(STRING); return '"'; } <STRING>([^\$\"\\]|\$[^\{\"\\]|\\.|\$\\.)*\$/\" | <STRING>([^\$\"\\]|\$[^\{\"\\]|\\.|\$\\.)+ { /* It is impossible to match strings ending with '$' with one @@ -137,11 +144,11 @@ or { return OR_KW; } yylval->e = unescapeStr(data->symbols, yytext); return STR; } -<STRING>\$\{ { PUSH_STATE(INITIAL); return DOLLAR_CURLY; } +<STRING>\$\{ { PUSH_STATE(INSIDE_DOLLAR_CURLY); return DOLLAR_CURLY; } <STRING>\" { POP_STATE(); return '"'; } <STRING>. return yytext[0]; /* just in case: shouldn't be reached */ -\'\'(\ *\n)? { PUSH_STATE(IND_STRING); return IND_STRING_OPEN; } +<INITIAL,INSIDE_DOLLAR_CURLY>\'\'(\ *\n)? { PUSH_STATE(IND_STRING); return IND_STRING_OPEN; } <IND_STRING>([^\$\']|\$[^\{\']|\'[^\'\$])+ { yylval->e = new ExprIndStr(yytext); return IND_STR; @@ -158,7 +165,7 @@ or { return OR_KW; } yylval->e = unescapeStr(data->symbols, yytext + 2); return IND_STR; } -<IND_STRING>\$\{ { PUSH_STATE(INITIAL); return DOLLAR_CURLY; } +<IND_STRING>\$\{ { PUSH_STATE(INSIDE_DOLLAR_CURLY); return DOLLAR_CURLY; } <IND_STRING>\'\' { POP_STATE(); return IND_STRING_CLOSE; } <IND_STRING>\' { yylval->e = new ExprIndStr("'"); @@ -166,6 +173,8 @@ or { return OR_KW; } } <IND_STRING>. return yytext[0]; /* just in case: shouldn't be reached */ +<INITIAL,INSIDE_DOLLAR_CURLY>{ + {PATH} { yylval->path = strdup(yytext); return PATH; } {HPATH} { yylval->path = strdup(yytext); return HPATH; } {SPATH} { yylval->path = strdup(yytext); return SPATH; } @@ -177,6 +186,7 @@ or { return OR_KW; } . return yytext[0]; +} %% |