diff options
Diffstat (limited to 'node_modules/node-sass/src/libsass/src/lexer.cpp')
| -rw-r--r-- | node_modules/node-sass/src/libsass/src/lexer.cpp | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/node_modules/node-sass/src/libsass/src/lexer.cpp b/node_modules/node-sass/src/libsass/src/lexer.cpp deleted file mode 100644 index be7f677..0000000 --- a/node_modules/node-sass/src/libsass/src/lexer.cpp +++ /dev/null @@ -1,181 +0,0 @@ -#include "sass.hpp" -#include <cctype> -#include <iostream> -#include <iomanip> -#include "lexer.hpp" -#include "constants.hpp" - - -namespace Sass { - using namespace Constants; - - namespace Prelexer { - - //#################################### - // BASIC CHARACTER MATCHERS - //#################################### - - // Match standard control chars - const char* kwd_at(const char* src) { return exactly<'@'>(src); } - const char* kwd_dot(const char* src) { return exactly<'.'>(src); } - const char* kwd_comma(const char* src) { return exactly<','>(src); }; - const char* kwd_colon(const char* src) { return exactly<':'>(src); }; - const char* kwd_star(const char* src) { return exactly<'*'>(src); }; - const char* kwd_plus(const char* src) { return exactly<'+'>(src); }; - const char* kwd_minus(const char* src) { return exactly<'-'>(src); }; - const char* kwd_slash(const char* src) { return exactly<'/'>(src); }; - - //#################################### - // implement some function that do exist in the standard - // but those are locale aware which brought some trouble - // this even seems to improve performance by quite a bit - //#################################### - - bool is_alpha(const char& chr) - { - return unsigned(chr - 'A') <= 'Z' - 'A' || - unsigned(chr - 'a') <= 'z' - 'a'; - } - - bool is_space(const char& chr) - { - // adapted the technique from is_alpha - return chr == ' ' || unsigned(chr - '\t') <= '\r' - '\t'; - } - - bool is_digit(const char& chr) - { - // adapted the technique from is_alpha - return unsigned(chr - '0') <= '9' - '0'; - } - - bool is_number(const char& chr) - { - // adapted the technique from is_alpha - return is_digit(chr) || chr == '-' || chr == '+'; - } - - bool is_xdigit(const char& chr) - { - // adapted the technique from is_alpha - return unsigned(chr - '0') <= '9' - '0' || - unsigned(chr - 'a') <= 'f' - 'a' || - unsigned(chr - 'A') <= 'F' - 'A'; - } - - bool is_punct(const char& chr) - { - // locale independent - return chr == '.'; - } - - bool is_alnum(const char& chr) - { - return is_alpha(chr) || is_digit(chr); - } - - // check if char is outside ascii range - bool is_unicode(const char& chr) - { - // check for unicode range - return unsigned(chr) > 127; - } - - // check if char is outside ascii range - // but with specific ranges (copied from Ruby Sass) - bool is_nonascii(const char& chr) - { - unsigned int cmp = unsigned(chr); - return ( - (cmp >= 128 && cmp <= 15572911) || - (cmp >= 15630464 && cmp <= 15712189) || - (cmp >= 4036001920) - ); - } - - // check if char is within a reduced ascii range - // valid in a uri (copied from Ruby Sass) - bool is_uri_character(const char& chr) - { - unsigned int cmp = unsigned(chr); - return (cmp > 41 && cmp < 127) || - cmp == ':' || cmp == '/'; - } - - // check if char is within a reduced ascii range - // valid for escaping (copied from Ruby Sass) - bool is_escapable_character(const char& chr) - { - unsigned int cmp = unsigned(chr); - return cmp > 31 && cmp < 127; - } - - // Match word character (look ahead) - bool is_character(const char& chr) - { - // valid alpha, numeric or unicode char (plus hyphen) - return is_alnum(chr) || is_unicode(chr) || chr == '-'; - } - - //#################################### - // BASIC CLASS MATCHERS - //#################################### - - // create matchers that advance the position - const char* space(const char* src) { return is_space(*src) ? src + 1 : 0; } - const char* alpha(const char* src) { return is_alpha(*src) ? src + 1 : 0; } - const char* unicode(const char* src) { return is_unicode(*src) ? src + 1 : 0; } - const char* nonascii(const char* src) { return is_nonascii(*src) ? src + 1 : 0; } - const char* digit(const char* src) { return is_digit(*src) ? src + 1 : 0; } - const char* xdigit(const char* src) { return is_xdigit(*src) ? src + 1 : 0; } - const char* alnum(const char* src) { return is_alnum(*src) ? src + 1 : 0; } - const char* punct(const char* src) { return is_punct(*src) ? src + 1 : 0; } - const char* hyphen(const char* src) { return *src && *src == '-' ? src + 1 : 0; } - const char* character(const char* src) { return is_character(*src) ? src + 1 : 0; } - const char* uri_character(const char* src) { return is_uri_character(*src) ? src + 1 : 0; } - const char* escapable_character(const char* src) { return is_escapable_character(*src) ? src + 1 : 0; } - - // Match multiple ctype characters. - const char* spaces(const char* src) { return one_plus<space>(src); } - const char* digits(const char* src) { return one_plus<digit>(src); } - const char* hyphens(const char* src) { return one_plus<hyphen>(src); } - - // Whitespace handling. - const char* no_spaces(const char* src) { return negate< space >(src); } - const char* optional_spaces(const char* src) { return zero_plus< space >(src); } - - // Match any single character. - const char* any_char(const char* src) { return *src ? src + 1 : src; } - - // Match word boundary (zero-width lookahead). - const char* word_boundary(const char* src) { return is_character(*src) || *src == '#' ? 0 : src; } - - // Match linefeed /(?:\n|\r\n?)/ - const char* re_linebreak(const char* src) - { - // end of file or unix linefeed return here - if (*src == 0 || *src == '\n') return src + 1; - // a carriage return may optionally be followed by a linefeed - if (*src == '\r') return *(src + 1) == '\n' ? src + 2 : src + 1; - // no linefeed - return 0; - } - - // Assert string boundaries (/\Z|\z|\A/) - // This is a zero-width positive lookahead - const char* end_of_line(const char* src) - { - // end of file or unix linefeed return here - return *src == 0 || *src == '\n' || *src == '\r' ? src : 0; - } - - // Assert end_of_file boundary (/\z/) - // This is a zero-width positive lookahead - const char* end_of_file(const char* src) - { - // end of file or unix linefeed return here - return *src == 0 ? src : 0; - } - - } -} |