[lang] Create a signature building function from a formal parameter p…

…rovider.

Signed-off-by: Stéphane Galland <galland@arakhne.org>

plugins/io.sarl.lang/src/io/sarl/lang/signature/ActionSignatureProvider.java

@@ -75,6 +75,14 @@ public interface ActionSignatureProvider {
 	 */
 	SignatureKey createSignatureIDFromJvmModel(boolean isVarargs, EList<JvmFormalParameter> parameters);
 
+	/** Build an identifier for the given parameters.
+	 *
+	 * @param isVarargs - indicates if the signature has a variatic parameter.
+	 * @param provider - the provider of the formal parameters.
+	 * @return the id.
+	 */
+	SignatureKey createSignatureID(boolean isVarargs, FormalParameterProvider provider);
+
 	/** Build an identifier for the given parameters.
 	 * <p>
 	 * The given parameter must following the format of the value given
@@ -126,4 +134,36 @@ public interface ActionSignatureProvider {
 	 */
 	InferredActionSignature getSignatures(ActionNameKey actionID, SignatureKey signatureID);
 
+	/** An object able to provide the name and the type of a formal parameter.
+	 *
+	 * @author $Author: sgalland$
+	 * @version $FullVersion$
+	 * @mavengroupid $GroupId$
+	 * @mavenartifactid $ArtifactId$
+	 */
+	public interface FormalParameterProvider {
+
+		/** Replies the number of formal parameters.
+		 *
+		 * @return the number of formal parameters.
+		 */
+		int getFormalParameterCount();
+
+		/** Replies the name of the formal parameter at the given position.
+		 *
+		 * @param position - the position of the formal parameter.
+		 * @return the name of the formal parameter.
+		 */
+		String getFormalParameterName(int position);
+
+		/** Replies the type of the formal parameter at the given position.
+		 *
+		 * @param position - the position of the formal parameter.
+		 * @param isVarargs - indicates if the parameter should be considered as a vararg parameter.
+		 * @return the type of the formal parameter.
+		 */
+		String getFormalParameterType(int position, boolean isVarargs);
+
+	}
+
 }

plugins/io.sarl.lang/src/io/sarl/lang/signature/DefaultActionSignatureProvider.java

@@ -240,6 +240,27 @@ public SignatureKey createSignatureIDFromJvmModel(boolean isVarargs, EList<JvmFo
 		return sig;
 	}
 
+	@Override
+	public SignatureKey createSignatureID(boolean isVarargs,
+			FormalParameterProvider provider) {
+		int count = provider.getFormalParameterCount();
+		SignatureKey sig = new SignatureKey(isVarargs, count);
+		if (count > 0) {
+			if (isVarargs) {
+				--count;
+				for (int i = 0; i < count; ++i) {
+					sig.add(provider.getFormalParameterType(i, false));
+				}
+				sig.add(provider.getFormalParameterType(count, true));
+			} else {
+				for (int i = 0; i < count; ++i) {
+					sig.add(provider.getFormalParameterType(i, false));
+				}
+			}
+		}
+		return sig;
+	}
+
 	@Override
 	public SignatureKey createSignatureIDForVoid() {
 		return new SignatureKey(false, 0);