X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flanguage%2Fexpressions%2FChangeLog;h=98df4a36e43af697f9ac6ac697ab1f7e09eebf5e;hb=ecd26ec19e9f8a58079a1c5fa06b39484787ab7e;hp=ab68d8ca94128844bdaea66a9435bd4a826c14e7;hpb=6492b3b49661963dc6d78201a1eb3927fdf54b68;p=pspp-builds.git

diff --git a/src/language/expressions/ChangeLog b/src/language/expressions/ChangeLog
index ab68d8ca..98df4a36 100644
--- a/src/language/expressions/ChangeLog
+++ b/src/language/expressions/ChangeLog
@@ -1,3 +1,55 @@
+Sat Dec 16 12:20:14 2006  Ben Pfaff  <blp@gnu.org>
+
+	* operations.def: Reverse order of arguments to DATEDIFF, for
+	compatibility.  Thanks to Daniel Williams
+	<Daniel.E.Williams@state.or.us> for reporting this bug.
+
+Wed Dec 13 19:30:26 2006  Ben Pfaff  <blp@gnu.org>
+
+	Implement support for DATESUM, DATEDIFF expression functions.  See
+	patch #5637.
+	
+	* helpers.c (enum date_unit): New enum.
+	[!HAVE_TRUNC] (trunc): New function.
+	(recognize_unit): New function.
+	(year_diff): New function.
+	(month_diff): New function.
+	(quarter_diff): New function.
+	(date_unit_duration): New function.
+	(expr_date_difference): New function.
+	(enum date_sum_method): New function.
+	(recognize_method): New function.
+	(add_months): New function.
+	(expr_date_sum): New function.
+	
+	* operations.def: Implement DATESUM, DATEDIFF functions.  Mark
+	VALUELABEL no_abbrev.
+
+Sun Dec 10 16:49:33 2006  Ben Pfaff  <blp@gnu.org>
+
+	* operations.def: Implement VALUELABEL function.  Add DATEDIFF,
+	DATESUM unimplemented stubs.
+
+	* parse.c (type_coercion_core): Add support for OP_var type, which
+	is a name for a numeric or string variable.
+	(is_compatible) New function.
+	(check_operator) Only require values to be compatible with their
+	expected types, not identical.
+	(is_valid_node) Ditto.
+	(compare_names) Always return mismatch if the command name can't
+	be abbreviated.
+	(lookup_function_helper) Pass the new OPF_NO_ABBREV flag to the
+	comparison function.
+
+	* generate.pl (init_all_types): Add support for a type just called
+	"var" that may be a numeric or string variable name.  Also, add a
+	no_abbrev option that prevents a function name from being
+	abbreviated (in case of naming conflict otherwise).
+	
+	* parse.inc.pl: Output OPF_NO_ABBREV flag.
+
+	* private.h: Add OPF_NO_ABBREV flag.
+
 Wed Jul 12 21:03:17 2006  Ben Pfaff  <blp@gnu.org>
 
 	* evaluate.c (cmd_debug_evaluate): Don't try to resize a null