new operation in control blocks

ChangeLog

@@ -1,5 +1,6 @@
 2010-04-11 Dietmar Warning
- * Robert Larice patch to allow ternary operation in control blocks:
+ * Robert Larice patch to allow new operations in control blocks:
+ * examples/new-check-3.sp, new-check-4.sp
  * src/include/fteparse.h, ngspice.h
  * src/frontend/parse*.*, evaluate.c, Makefile.am, src/misc/string.c, stringutil.h
 

examples/control_structs/new-check-3.sp

@@ -0,0 +1,96 @@
+new ft_getpnames parser check 3, try ternary
+
+* (compile (concat "tmp-1/ng-spice-rework/src/ngspice "  buffer-file-name) t)
+
+VIN  1 0  DC=0
+
+.control
+
+dc VIN 0 10 5
+
+* trying the ternary
+
+let checks = 0
+
+let const0 = 0
+let const5 = 5
+let const6 = 6
+
+
+let tmp = const0 ? const5 : const6
+if tmp eq const6
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+let tmp = const6 ? const5 : const6
+if tmp eq const5
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+define foo(a,b,d) a ? b : d
+
+if foo(const0,const5,const6) eq const6
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+if foo(const6,const5,const6) eq const5
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+let vec7 = 7*unitvec(7)
+let vec8 = 8*unitvec(8)
+
+if length(const5 ? vec7 : vec8) eq 7
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+if length(const0 ? vec7 : vec8) eq 8
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+* FIXME, "1 ? 1:1" (without spaces around of ':') doesnt work,
+*   "1:1" is a lexem, WHY !!!
+*   ist that an old artifact, (ancient hierarchical name separator ':')
+*
+*print length(1?1:1)
+
+*if (1 ? 1:1) eq 1
+if (1 ? 1 : 1) eq 1
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+print @vin[dc]
+
+* '"' survives, and will be processed in the ft_getpnames() lexer, that is PPlex()
+*   where the string will be unqoted
+*   thats used vor weired variable names, for example "zero(1)"
+let foo = "vec8"
+if foo eq vec8
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+if checks eq 8
+  echo "INFO: ok"
+else
+  echo "ERROR:"
+end
+
+.endc
+
+.end

examples/control_structs/new-check-4.sp

@@ -0,0 +1,111 @@
+demonstrate < etc in ft_getpnames
+
+* (compile (concat "tmp-1/ng-spice-rework/src/ngspice " buffer-file-name) t)
+
+VIN  1 0  DC=0
+
+.control
+
+dc VIN 0 10 5
+
+let checks = 0
+
+let const0 = 0
+let const5 = 5
+let const6 = 6
+
+* check some relational operators, which are in danger to mixed up
+*   with csh semantic, that is IO redirection
+
+if const5 < const6
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+if const6 > const5
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+if const5 >= const5
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+if const5 <= const5
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+if const5 = const5
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+* check some wired non-equality operators
+*   note: there are some awkward tranformations ahead of the ft_getpnames lexer
+*     transforming "><" into "> <"
+*     and          "<>" into "< >"
+*   note: "!=" would have been in serious danger to be fooled up within
+*     csh history mechanism
+
+if const6 <> const5
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+if const6 >< const5
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+
+* check some boolean operators, which are in danger to be mixed up
+*   with csh semantic, `&' background '|' pipe  '~' homedirectory
+
+if const5 & const5
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+if const0 | const5
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+if ~ const0
+  let checks = checks + 1
+else
+  echo "ERROR:"
+end
+
+* note:
+*   "!=" would be in danger, '!' triggers the csh history mechanism
+*if const5 != const6
+*  echo "just trying"
+*end
+
+
+* Note: csh semantics swallows the '>' and '<' operators
+*   on most of the com lines
+* witnessed by
+let tmp = const5 > unwanted_output_file_1
+define foo(a,b) a > unwanted_output_file_2
+print const0 > unwanted_output_file_3
+
+if checks eq 10
+  echo "INFO: ok"
+end
+
+.endc
+
+.end