These changes allow AEL to better check ${} constructs within $[...], that are concatenated with text.

I modified and added rules in ast_expr2.fl to better handle
the concatenations.

I added some default routines to ast_expr2.y so the standalone would
compile. It also looks like I haven't run this thru bison since 2.1, so
it's good to get this updated.

The Makefile has comments added now for check_expr2 and check_expr to
explain what they are for, and how to run them. 

The testexpr2s stuff has been removed, in favor of check_expr2.

expr2.testinput has been updated to include the two expressions
that inspired these changes (from mcnobody on #asterisk this morning)
The regression has been run and all looks well.



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@179807 65c4cc65-6c06-0410-ace0-fbb531ad65f3

utils/Makefile

@@ -15,7 +15,17 @@
 
 .PHONY: clean all uninstall
 
-# to get check_expr, add it to the ALL_UTILS list
+# to get check_expr, add it to the ALL_UTILS list -- this is a somewhat old checking
+#     program that wants an ael file for input, and will check each $[] expr for
+#     possible (old) problems, like spacing around operators, which dates back to
+#     the 1.2 days. The neat part is that it will actually evaluate the expressions.
+#     Users could use this to quickly check expressions in their .ael file.
+# to get check_expr2, add it to the ALL_UTILS list -- this is a program that will
+#     read in a file containing expressions (as if they were in $[ ]), one per line. 
+#     It will, of course signal any syntax errors. Devs (like murf) should use this whenever
+#     changes are made to ast_expr2.y or ast_expr2.fl (or the corresponding .c files),
+#     as a regression test. Others (mere mortals?) need not bother, but they are
+#     more than welcome to play! The regression test itself is in expr2.testinput.
 ALL_UTILS:=astman smsq stereorize streamplayer aelparse muted
 UTILS:=$(ALL_UTILS)
 
@@ -93,6 +103,10 @@ ast_expr2f.o: ASTCFLAGS+=-DSTANDALONE_AEL -I../main -Wno-unused
 
 check_expr: check_expr.o ast_expr2.o ast_expr2f.o
 
+check_expr2: ast_expr2.c ast_expr2f.o
+	gcc -DSTANDALONE ast_expr2.c ast_expr2f.o -o check_expr2
+	check_expr2 expr2.testinput
+
 aelbison.c: ../pbx/ael/ael.tab.c
 	@cp $< $@
 aelbison.o: aelbison.c ../pbx/ael/ael.tab.h ../include/asterisk/ael_structs.h
@@ -112,13 +126,6 @@ aelparse.o: ASTCFLAGS+=-I../pbx -DSTANDALONE_AEL -Wno-unused
 
 aelparse: aelparse.o aelbison.o pbx_ael.o ael_main.o ast_expr2f.o ast_expr2.o strcompat.o
 
-testexpr2s: ../main/ast_expr2f.c ../main/ast_expr2.c ../main/ast_expr2.h
-	$(CC) -g -c -I../include -DSTANDALONE_AEL ../main/ast_expr2f.c -o ast_expr2f.o
-	$(CC) -g -c -I../include -DSTANDALONE_AEL ../main/ast_expr2.c -o ast_expr2.o
-	$(CC) -g -o testexpr2s ast_expr2f.o ast_expr2.o
-	rm ast_expr2.o ast_expr2f.o 
-	./testexpr2s expr2.testinput
-
 smsq: smsq.o strcompat.o
 smsq: LIBS+=$(POPT_LIB)
 

utils/expr2.testinput

@@ -90,3 +90,5 @@ x != x
 3
 something
 043
+${GLOBAL(ULKOPREFIX)}9${x}
+512059${x}