Rename placeholder param-info classes

stfx/clap/stfx-clap.h

@@ -519,13 +519,13 @@ struct Plugin : public clap_plugin {
 			return v;
 		}
 		template<class RP>
-		PInfoPlaceholder range(const char *key, RP &param) {
+		RangeParamIgnore range(const char *key, RP &param) {
 			double v = param;
 			(*this)(key, v);
 			return {};
 		}
 		template<class SP>
-		PInfoPlaceholder stepped(const char *key, SP &param) {
+		SteppedParamIgnore stepped(const char *key, SP &param) {
 			int v = param;
 			(*this)(key, v);
 			return {};
@@ -540,14 +540,14 @@ struct Plugin : public clap_plugin {
 			return v;
 		}
 		template<class RP>
-		PInfoPlaceholder range(const char *key, RP &param) {
+		RangeParamIgnore range(const char *key, RP &param) {
 			double v = param;
 			(*this)(key, v);
 			param = v;
 			return {};
 		}
 		template<class SP>
-		PInfoPlaceholder stepped(const char *key, SP &param) {
+		SteppedParamIgnore stepped(const char *key, SP &param) {
 			int v = param;
 			(*this)(key, v);
 			param = v;

stfx/stfx-library.h

@@ -95,30 +95,44 @@ namespace stfx {
 	}
 
 	// When we want to ignore parameter info (covers both range and stepped)
-	struct PInfoPlaceholder {
+	struct RangeParamIgnore {
-		PInfoPlaceholder & info(const char*, const char*) {
+		RangeParamIgnore & info(const char*, const char*) {
 			return *this;
 		}
-		PInfoPlaceholder & info(std::string, std::string) {
+		RangeParamIgnore & range(double low, double high) {
 			return *this;
 		}
-		template<typename V1, typename V2>
+		RangeParamIgnore & range(double low, double mid, double high) {
-		PInfoPlaceholder & range(V1, V2) {
-			return *this;
-		}
-		template<typename V1, typename V2, typename V3>
-		PInfoPlaceholder & range(V1, V2, V3) {
 			return *this;
 		}
+		/* Always takes a suffix.  Units registered first are preferred when formatting values
+		Optional arguments (any can be omitted if the order is correct):
+			precision:
+				int: decimalDigits
+			display mapping (e.g. for value in Hz, display in kHz):
+				double displayToValue(double)
+				double valueToDisplay(double)
+			valid range:
+				double low
+				double high
+		*/
 		template<class ...Args>
-		PInfoPlaceholder & unit(Args...) {
+		RangeParamIgnore & unit(const char *suffix, Args...) {
 			return *this;
 		}
-		PInfoPlaceholder & exact(double, const char *) {
+		RangeParamIgnore & exact(double, const char *) {
+			return *this;
+		}
+	};
+	struct SteppedParamIgnore {
+		SteppedParamIgnore & info(const char*, const char*) {
+			return *this;
+		}
+		SteppedParamIgnore & range(int low, int high) {
 			return *this;
 		}
 		template<typename ...Args>
-		PInfoPlaceholder & label(Args ...) {
+		SteppedParamIgnore & label(Args ...) {
 			return *this;
 		}
 	};
@@ -353,12 +367,12 @@ namespace stfx {
 			std::vector<LibraryParam<int> *> stepParams;
 
 			// Add registered parameters to the list
-			PInfoPlaceholder range(const char *, LibraryParam<double> &param, const char *codeExpr=nullptr) {
+			RangeParamIgnore range(const char *, LibraryParam<double> &param, const char *codeExpr=nullptr) {
 				(void)codeExpr;
 				rangeParams.push_back(&param);
 				return {};
 			}
-			PInfoPlaceholder stepped(const char *, LibraryParam<int> &param, const char *codeExpr=nullptr) {
+			SteppedParamIgnore stepped(const char *, LibraryParam<int> &param, const char *codeExpr=nullptr) {
 				(void)codeExpr;
 				stepParams.push_back(&param);
 				return {};