1 files changed, 71 insertions, 43 deletions
diff --git a/indra/llcommon/llsdutil.h b/indra/llcommon/llsdutil.h
index 501600f1d9..6a6c396687 100644
--- a/indra/llcommon/llsdutil.h
+++ b/indra/llcommon/llsdutil.h
@@ -35,62 +35,32 @@
 #ifndef LL_LLSDUTIL_H
 #define LL_LLSDUTIL_H
 
-#include "llsd.h"
-
-// vector3
-class LLVector3;
-LLSD ll_sd_from_vector3(const LLVector3& vec);
-LLVector3 ll_vector3_from_sd(const LLSD& sd, S32 start_index = 0);
-
-// vector4
-class LLVector4;
-LLSD ll_sd_from_vector4(const LLVector4& vec);
-LLVector4 ll_vector4_from_sd(const LLSD& sd, S32 start_index = 0);
-
-// vector3d (double)
-class LLVector3d;
-LLSD ll_sd_from_vector3d(const LLVector3d& vec);
-LLVector3d ll_vector3d_from_sd(const LLSD& sd, S32 start_index = 0);
-
-// vector2
-class LLVector2;
-LLSD ll_sd_from_vector2(const LLVector2& vec);
-LLVector2 ll_vector2_from_sd(const LLSD& sd);
-
-// Quaternion
-class LLQuaternion;
-LLSD ll_sd_from_quaternion(const LLQuaternion& quat);
-LLQuaternion ll_quaternion_from_sd(const LLSD& sd);
-
-// color4
-class LLColor4;
-LLSD ll_sd_from_color4(const LLColor4& c);
-LLColor4 ll_color4_from_sd(const LLSD& sd);
+class LLSD;
 
 // U32
-LLSD ll_sd_from_U32(const U32);
-U32 ll_U32_from_sd(const LLSD& sd);
+LL_COMMON_API LLSD ll_sd_from_U32(const U32);
+LL_COMMON_API U32 ll_U32_from_sd(const LLSD& sd);
 
 // U64
-LLSD ll_sd_from_U64(const U64);
-U64 ll_U64_from_sd(const LLSD& sd);
+LL_COMMON_API LLSD ll_sd_from_U64(const U64);
+LL_COMMON_API U64 ll_U64_from_sd(const LLSD& sd);
 
 // IP Address
-LLSD ll_sd_from_ipaddr(const U32);
-U32 ll_ipaddr_from_sd(const LLSD& sd);
+LL_COMMON_API LLSD ll_sd_from_ipaddr(const U32);
+LL_COMMON_API U32 ll_ipaddr_from_sd(const LLSD& sd);
 
 // Binary to string
-LLSD ll_string_from_binary(const LLSD& sd);
+LL_COMMON_API LLSD ll_string_from_binary(const LLSD& sd);
 
 //String to binary
-LLSD ll_binary_from_string(const LLSD& sd);
+LL_COMMON_API LLSD ll_binary_from_string(const LLSD& sd);
 
 // Serializes sd to static buffer and returns pointer, useful for gdb debugging.
-char* ll_print_sd(const LLSD& sd);
+LL_COMMON_API char* ll_print_sd(const LLSD& sd);
 
 // Serializes sd to static buffer and returns pointer, using "pretty printing" mode.
-char* ll_pretty_print_sd_ptr(const LLSD* sd);
-char* ll_pretty_print_sd(const LLSD& sd);
+LL_COMMON_API char* ll_pretty_print_sd_ptr(const LLSD* sd);
+LL_COMMON_API char* ll_pretty_print_sd(const LLSD& sd);
 
 //compares the structure of an LLSD to a template LLSD and stores the
 //"valid" values in a 3rd LLSD. Default values
@@ -99,11 +69,69 @@ char* ll_pretty_print_sd(const LLSD& sd);
 //Returns false if the test is of same type but values differ in type
 //Otherwise, returns true
 
-BOOL compare_llsd_with_template(
+LL_COMMON_API BOOL compare_llsd_with_template(
 	const LLSD& llsd_to_test,
 	const LLSD& template_llsd,
 	LLSD& resultant_llsd);
 
+/**
+ * Recursively determine whether a given LLSD data block "matches" another
+ * LLSD prototype. The returned string is empty() on success, non-empty() on
+ * mismatch.
+ *
+ * This function tests structure (types) rather than data values. It is
+ * intended for when a consumer expects an LLSD block with a particular
+ * structure, and must succinctly detect whether the arriving block is
+ * well-formed. For instance, a test of the form:
+ * @code
+ * if (! (data.has("request") && data.has("target") && data.has("modifier") ...))
+ * @endcode
+ * could instead be expressed by initializing a prototype LLSD map with the
+ * required keys and writing:
+ * @code
+ * if (! llsd_matches(prototype, data).empty())
+ * @endcode
+ *
+ * A non-empty return value is an error-message fragment intended to indicate
+ * to (English-speaking) developers where in the prototype structure the
+ * mismatch occurred.
+ *
+ * * If a slot in the prototype isUndefined(), then anything is valid at that
+ *   place in the real object. (Passing prototype == LLSD() matches anything
+ *   at all.)
+ * * An array in the prototype must match a data array at least that large.
+ *   (Additional entries in the data array are ignored.) Every isDefined()
+ *   entry in the prototype array must match the corresponding entry in the
+ *   data array.
+ * * A map in the prototype must match a map in the data. Every key in the
+ *   prototype map must match a corresponding key in the data map. (Additional
+ *   keys in the data map are ignored.) Every isDefined() value in the
+ *   prototype map must match the corresponding key's value in the data map.
+ * * Scalar values in the prototype are tested for @em type rather than value.
+ *   For instance, a String in the prototype matches any String at all. In
+ *   effect, storing an Integer at a particular place in the prototype asserts
+ *   that the caller intends to apply asInteger() to the corresponding slot in
+ *   the data.
+ * * A String in the prototype matches String, Boolean, Integer, Real, UUID,
+ *   Date and URI, because asString() applied to any of these produces a
+ *   meaningful result.
+ * * Similarly, a Boolean, Integer or Real in the prototype can match any of
+ *   Boolean, Integer or Real in the data -- or even String.
+ * * UUID matches UUID or String.
+ * * Date matches Date or String.
+ * * URI matches URI or String.
+ * * Binary in the prototype matches only Binary in the data.
+ *
+ * @TODO: when a Boolean, Integer or Real in the prototype matches a String in
+ * the data, we should examine the String @em value to ensure it can be
+ * meaningfully converted to the requested type. The same goes for UUID, Date
+ * and URI.
+ */
+LL_COMMON_API std::string llsd_matches(const LLSD& prototype, const LLSD& data, const std::string& pfx="");
+
+/// Deep equality
+LL_COMMON_API bool llsd_equals(const LLSD& lhs, const LLSD& rhs);
+
 // Simple function to copy data out of input & output iterators if
 // there is no need for casting.
 template<typename Input> LLSD llsd_copy_array(Input iter, Input end)