1 files changed, 110 insertions, 0 deletions
diff --git a/gi/pyp-topics/src/contexts_lexer.l b/gi/pyp-topics/src/contexts_lexer.l
new file mode 100644
index 00000000..61189a73
--- /dev/null
+++ b/gi/pyp-topics/src/contexts_lexer.l
@@ -0,0 +1,110 @@
+%{
+#include "contexts_lexer.h"
+
+#include <string>
+#include <iostream>
+#include <sstream>
+#include <cstring>
+#include <cassert>
+
+int lex_line = 0;
+std::istream* contextslex_stream = NULL;
+ContextsLexer::ContextsCallback contexts_callback = NULL;
+void* contexts_callback_extra = NULL;
+
+#undef YY_INPUT
+#define YY_INPUT(buf, result, max_size) (result = contextslex_stream->read(buf, max_size).gcount())
+
+#define YY_SKIP_YYWRAP 1
+int num_phrases = 0;
+int yywrap() { return 1; }
+
+#define MAX_TOKEN_SIZE 255
+std::string contextslex_tmp_token(MAX_TOKEN_SIZE, '\0');
+ContextsLexer::PhraseContextsType current_contexts;
+
+#define MAX_CONTEXT_SIZE 255
+//std::string tmp_context[MAX_CONTEXT_SIZE];
+ContextsLexer::Context tmp_context;
+
+
+void contextslex_reset() {
+  current_contexts.phrase.clear();
+  current_contexts.contexts.clear();
+  current_contexts.counts.clear();
+  tmp_context.clear();
+}
+
+%}
+
+INT [\-+]?[0-9]+|inf|[\-+]inf
+
+%x CONTEXT COUNT COUNT_END
+%%
+
+<INITIAL>[^\t]+	{ 
+    contextslex_reset();
+    current_contexts.phrase.assign(yytext, yyleng);
+    BEGIN(CONTEXT);
+  }
+<INITIAL>\t	{ 
+    ; 
+  }
+
+<INITIAL,CONTEXT,COUNT>\n	{
+    std::cerr << "ERROR: contexts_lexer.l: unexpected newline while trying to read phrase|context|count." << std::endl;
+    abort();
+  }
+
+<CONTEXT>\|\|\|	{
+    current_contexts.contexts.push_back(tmp_context);
+    tmp_context.clear();
+		BEGIN(COUNT);
+	}
+<CONTEXT>[^ \t]+	{ 
+		contextslex_tmp_token.assign(yytext, yyleng);
+    tmp_context.push_back(contextslex_tmp_token);
+  }
+<CONTEXT>[ \t]+	{ ; }
+
+<COUNT>[ \t]+	{ ; }
+<COUNT>C={INT} { 
+		current_contexts.counts.push_back(atoi(yytext+2));
+    BEGIN(COUNT_END);
+  }
+<COUNT>.	{ 
+    std::cerr << "ERROR: contexts_lexer.l: unexpected content while reading count." << std::endl;
+    abort();
+  }
+
+<COUNT_END>[ \t]+  { ; }
+<COUNT_END>\|\|\|	{
+		BEGIN(CONTEXT);
+  }
+<COUNT_END>\n {
+    //std::cerr << "READ:" << current_contexts.phrase << " with " << current_contexts.contexts.size() 
+    //  << " contexts, and " << current_contexts.counts.size() << " counts." << std::endl;
+		contexts_callback(current_contexts, contexts_callback_extra);
+    current_contexts.phrase.clear();
+    current_contexts.contexts.clear();
+    current_contexts.counts.clear();
+		BEGIN(INITIAL);
+  }
+<COUNT_END>.  { 
+		contextslex_tmp_token.assign(yytext, yyleng);
+    std::cerr << "ERROR: contexts_lexer.l: unexpected content while looking for ||| closing count." << std::endl;
+    abort();
+  }
+
+%%
+
+#include "../../../decoder/filelib.h" 
+
+void ContextsLexer::ReadContexts(std::istream* in, ContextsLexer::ContextsCallback func, void* extra) {
+  lex_line = 1;
+  contextslex_stream = in;
+  contexts_callback_extra = extra,
+  contexts_callback = func;
+  yylex();
+}
+