c622b3f8d3959b7f3eb53f3f4aec9b9e61c76989
kent
  Thu Aug 15 12:03:17 2019 -0700
Added strexParseFile function, so can parse files as well as strings.  Also added import operator, which is going to be so helpful for debugging and reusing complicated expressions.

diff --git src/inc/strex.h src/inc/strex.h
index ac5320c..403700d 100644
--- src/inc/strex.h
+++ src/inc/strex.h
@@ -7,25 +7,28 @@
 /* Parsing out something into strex */
 struct strexParse;    /* A parser generated tree */
 
 typedef char* (*StrexLookup)(void *symbols, char *key);
 /* Callback to lookup value of key in a symbol table. */
 
 struct strexParse *strexParseString(char *s, char *fileName, int fileLineNumber,
     void *symbols, StrexLookup lookup);
 /* Parse out string expression in s and return root of tree. The fileName and 
  * fileLineNumber are just used in the error message.  Ideally they should help 
  * the user navigate to where the problem was. 
  *    If symbols is non-null then it and lookup will be used together to complain
  *    about missing variables rather than just generating empty strings when 
  *    they are referenced. */
 
+struct strexParse *strexParseFile(char *fileName, void *symbols, StrexLookup lookup);
+/* Similar to strexParseString, but get input from a file rather than a string */
+
 void strexParseDump(struct strexParse *p, int depth, FILE *f);
 /* Dump out strexParse tree and children for debugging.  Usual depth is 0. */
 
 /* Evaluating a parsed out strex expression */
 char *strexEvalAsString(struct strexParse *p, void *symbols, StrexLookup lookup);
 /* Evaluating a strex expression on a symbol table with a lookup function for variables and
  * return result as a string value. */
 
 #endif /* STREX_H */