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-rw-r--r--creg/json_feature_map_lexer.ll137
1 files changed, 0 insertions, 137 deletions
diff --git a/creg/json_feature_map_lexer.ll b/creg/json_feature_map_lexer.ll
deleted file mode 100644
index f9ce7977..00000000
--- a/creg/json_feature_map_lexer.ll
+++ /dev/null
@@ -1,137 +0,0 @@
-%option nounput
-%{
-
-#include "json_feature_map_lexer.h"
-#include "fdict.h"
-#include "fast_sparse_vector.h"
-
-#define YY_DECL int json_fmap_yylex (void)
-#undef YY_INPUT
-#define YY_INPUT(buf, result, max_size) (result = jfmap_stream->read(buf, max_size).gcount())
-#define YY_SKIP_YYWRAP 1
-int yywrap() { return 1; }
-
-JSONFeatureMapLexer::FeatureMapCallback json_fmap_callback = NULL;
-void* json_fmap_callback_extra = NULL;
-std::istream* jfmap_stream = NULL;
-bool fl = true;
-unsigned spos = 0;
-char featname[16000];
-#define MAX_FEATS 20000
-std::pair<int, float> featmap[MAX_FEATS];
-unsigned curfeat = 0;
-std::string instid;
-
-inline unsigned unicode_escape_to_utf8(uint16_t w1, uint16_t w2, char* putf8) {
- uint32_t cp;
- if((w1 & 0xfc00) == 0xd800) {
- if((w2 & 0xfc00) == 0xdc00) {
- cp = 0x10000 + (((static_cast<uint32_t>(w1) & 0x3ff) << 10) | (w2 & 0x3ff));
- } else {
- abort();
- }
- } else {
- cp = w1;
- }
-
-
- if(cp < 0x80) {
- putf8[0] = static_cast<char>(cp);
- return 1;
- } else if(cp < 0x0800) {
- putf8[0] = 0xc0 | ((cp >> 6) & 0x1f);
- putf8[1] = 0x80 | (cp & 0x3f);
- return 2;
- } else if(cp < 0x10000) {
- putf8[0] = 0xe0 | ((cp >> 6) & 0x0f);
- putf8[1] = 0x80 | ((cp >> 6) & 0x3f);
- putf8[2] = 0x80 | (cp & 0x3f);
- return 3;
- } else if(cp < 0x1fffff) {
- putf8[0] = 0xf0 | ((cp >> 18) & 0x07);
- putf8[1] = 0x80 | ((cp >> 12) & 0x3f);
- putf8[2] = 0x80 | ((cp >> 6) & 0x3f);
- putf8[3] = 0x80 | (cp & 0x3f);
- return 4;
- } else {
- abort();
- }
- return 0;
-}
-
-%}
-
-ID [^ \t\n\r]+
-HEX_D [a-fA-F0-9]
-INT [-]?[0-9]+
-DOUBLE {INT}((\.[0-9]+)?([eE][-+]?[0-9]+)?)
-WS [ \t\r\n]
-LCB [{]
-RCB [}]
-UNESCAPED_CH [^\"\\\b\n\r\f\t]
-
-%x JSON PREVAL STRING JSONVAL POSTVAL DOUBLE
-%%
-
-<INITIAL>{ID} { instid = yytext; BEGIN(JSON); }
-
-<JSON>{WS}*{LCB}{WS}* { BEGIN(PREVAL); }
-
-<JSON>{WS}*{LCB}{WS}*{RCB}\n* {const SparseVector<float> x;
- json_fmap_callback(instid, x, json_fmap_callback_extra);
- curfeat = 0;
- BEGIN(INITIAL);}
-
-<PREVAL>\" { BEGIN(STRING); spos=0; }
-
-<STRING>\" { featname[spos] = 0;
- featmap[curfeat].first = FD::Convert(featname);
- BEGIN(JSONVAL);
- }
-<STRING>{UNESCAPED_CH} { featname[spos++] = yytext[0]; }
-<STRING>\\\" { featname[spos++] = '"'; }
-<STRING>\\\\ { featname[spos++] = '\\'; }
-<STRING>\\\/ { featname[spos++] = '/'; }
-<STRING>\\b { }
-<STRING>\\f { }
-<STRING>\\n { }
-<STRING>\\r { }
-<STRING>\\t { }
-<STRING>\\u{HEX_D}{HEX_D}{HEX_D}{HEX_D} { uint16_t hex = strtol(&yytext[2], NULL, 16);
- spos += unicode_escape_to_utf8(hex, 0, &featname[spos++])-1;
- }
-
-<JSONVAL>{WS}*:{WS}* { BEGIN(DOUBLE); }
-<DOUBLE>{DOUBLE} { featmap[curfeat++].second = strtod(yytext, 0);
- BEGIN(POSTVAL); }
-
-<POSTVAL>{WS}*,{WS}* { BEGIN(PREVAL); }
-<POSTVAL>{WS}*{RCB}\n* {
- const SparseVector<float> x(&featmap[0], &featmap[curfeat]);
- json_fmap_callback(instid, x, json_fmap_callback_extra);
- curfeat = 0;
- BEGIN(INITIAL);
- }
-
-<PREVAL,POSTVAL,DOUBLE,JSONVAL,INITIAL>. { std::cerr << "bad input: " << yytext << std::endl; abort(); }
-
-%%
-
-void JSONFeatureMapLexer::ReadRules(std::istream* in, FeatureMapCallback func, void* extra) {
- json_fmap_callback = func;
- json_fmap_callback_extra = extra;
- jfmap_stream = in;
- json_fmap_yylex();
-}
-
-#if 0
-void cb(const std::string& id, const SparseVector<float>& fmap, void* extra) {
- (void) extra;
- static int cc = 0;
- cc++;
-}
-
-int main() {
- JSONFeatureMapLexer::ReadRules(&std::cin, cb, NULL);
-}
-#endif