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| author | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2016-01-19T19·33+0100 |
|---|---|---|
| committer | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2016-01-19T19·33+0100 |
| commit | 8120b6fb8a4924f8ae717bba9bbda4a2f89e2141 (patch) | |
| tree | 18836791d45604a39d7294fef3f13e391b8af07b /src/libexpr/lexer.l | |
| parent | 4c8098f30cb3f29322bc35d0d65b88daf9c5f865 (diff) | |
Revert "don't abort when given unmatched '}' with 'start-condition stack underflow'. This fixes #751"
This reverts commit 8d22b26448a091c76ab972c0b0603daac5e255e4. It breaks Nixpkgs: $ nix-env -qa error: syntax error, unexpected IND_STR, expecting '}', at /home/eelco/Dev/nixpkgs-stable/pkgs/top-level/python-packages.nix:7605:8
Diffstat (limited to 'src/libexpr/lexer.l')
| -rw-r--r-- | src/libexpr/lexer.l | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/src/libexpr/lexer.l b/src/libexpr/lexer.l index 791b72a8b52c..1f2957ec71ad 100644 --- a/src/libexpr/lexer.l +++ b/src/libexpr/lexer.l @@ -8,7 +8,6 @@ %x STRING %x IND_STRING -%x INSIDE_DOLLAR_CURLY %{ @@ -94,8 +93,6 @@ URI [a-zA-Z][a-zA-Z0-9\+\-\.]*\:[a-zA-Z0-9\%\/\?\:\@\&\=\+\$\,\-\_\.\!\~ %% -<INITIAL,INSIDE_DOLLAR_CURLY>{ - if { return IF; } then { return THEN; } @@ -127,15 +124,11 @@ or { return OR_KW; } return INT; } -\$\{ { PUSH_STATE(INSIDE_DOLLAR_CURLY); return DOLLAR_CURLY; } -\{ { return '{'; } -} - -\} { return '}'; } -<INSIDE_DOLLAR_CURLY>\} { POP_STATE(); return '}'; } - -<INITIAL,INSIDE_DOLLAR_CURLY>\" { PUSH_STATE(STRING); return '"'; } +\$\{ { PUSH_STATE(INITIAL); return DOLLAR_CURLY; } +\{ { PUSH_STATE(INITIAL); return '{'; } +\} { POP_STATE(); return '}'; } +\" { PUSH_STATE(STRING); return '"'; } <STRING>([^\$\"\\]|\$[^\{\"\\]|\\.|\$\\.)*\$/\" | <STRING>([^\$\"\\]|\$[^\{\"\\]|\\.|\$\\.)+ { /* It is impossible to match strings ending with '$' with one @@ -144,11 +137,11 @@ or { return OR_KW; } yylval->e = unescapeStr(data->symbols, yytext); return STR; } -<STRING>\$\{ { PUSH_STATE(INSIDE_DOLLAR_CURLY); return DOLLAR_CURLY; } +<STRING>\$\{ { PUSH_STATE(INITIAL); return DOLLAR_CURLY; } <STRING>\" { POP_STATE(); return '"'; } <STRING>. return yytext[0]; /* just in case: shouldn't be reached */ -<INITIAL,INSIDE_DOLLAR_CURLY>\'\'(\ *\n)? { PUSH_STATE(IND_STRING); return IND_STRING_OPEN; } +\'\'(\ *\n)? { PUSH_STATE(IND_STRING); return IND_STRING_OPEN; } <IND_STRING>([^\$\']|\$[^\{\']|\'[^\'\$])+ { yylval->e = new ExprIndStr(yytext); return IND_STR; @@ -165,7 +158,7 @@ or { return OR_KW; } yylval->e = unescapeStr(data->symbols, yytext + 2); return IND_STR; } -<IND_STRING>\$\{ { PUSH_STATE(INSIDE_DOLLAR_CURLY); return DOLLAR_CURLY; } +<IND_STRING>\$\{ { PUSH_STATE(INITIAL); return DOLLAR_CURLY; } <IND_STRING>\'\' { POP_STATE(); return IND_STRING_CLOSE; } <IND_STRING>\' { yylval->e = new ExprIndStr("'"); @@ -173,8 +166,6 @@ 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; } @@ -186,7 +177,6 @@ or { return OR_KW; } . return yytext[0]; -} %% |