feat(parser): model PostgreSQL type domain and extension DDL

src/main/java/net/sf/jsqlparser/parser/feature/Feature.java

@@ -559,6 +559,10 @@ public enum Feature {
      * @see CreateSequence
      */
     createSequence,
+    /**
+     * Structured type, domain and extension statements.
+     */
+    createType, alterType, createDomain, alterDomain, createExtension, alterExtension,
     /**
      * SQL "CREATE SYNONYM" statement is allowed
      *

src/main/java/net/sf/jsqlparser/statement/RoutineReference.java

@@ -0,0 +1,115 @@
+/*-
+ * #%L
+ * JSQLParser library
+ * %%
+ * Copyright (C) 2004 - 2026 JSQLParser
+ * %%
+ * Dual licensed under GNU LGPL 2.1 or Apache License 2.0
+ * #L%
+ */
+package net.sf.jsqlparser.statement;
+
+import java.util.List;
+import java.util.stream.Collectors;
+import net.sf.jsqlparser.statement.create.table.ColDataType;
+import java.io.Serializable;
+
+public class RoutineReference implements Serializable {
+    private String name;
+    private List<Argument> arguments;
+    private boolean allArguments;
+    private List<Argument> orderByArguments;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public List<Argument> getArguments() {
+        return arguments;
+    }
+
+    public void setArguments(List<Argument> arguments) {
+        this.arguments = arguments;
+    }
+
+    public boolean isAllArguments() {
+        return allArguments;
+    }
+
+    public void setAllArguments(boolean allArguments) {
+        this.allArguments = allArguments;
+    }
+
+    public List<Argument> getOrderByArguments() {
+        return orderByArguments;
+    }
+
+    public void setOrderByArguments(List<Argument> orderByArguments) {
+        this.orderByArguments = orderByArguments;
+    }
+
+    /** A signature argument is a data type, not an invocation expression. */
+    public static class Argument implements Serializable {
+        public enum Mode {
+            IN, OUT, INOUT, VARIADIC
+        }
+
+        private Mode mode;
+        private String name;
+        private ColDataType dataType;
+
+        public Mode getMode() {
+            return mode;
+        }
+
+        public void setMode(Mode mode) {
+            this.mode = mode;
+        }
+
+        public String getName() {
+            return name;
+        }
+
+        public void setName(String name) {
+            this.name = name;
+        }
+
+        public ColDataType getDataType() {
+            return dataType;
+        }
+
+        public void setDataType(ColDataType dataType) {
+            this.dataType = dataType;
+        }
+
+        @Override
+        public String toString() {
+            return (mode == null ? "" : mode + " ") + (name == null ? "" : name + " ") + dataType;
+        }
+    }
+
+    @Override
+    public String toString() {
+        if (arguments == null && !allArguments && orderByArguments == null) {
+            return name;
+        }
+        StringBuilder sql = new StringBuilder(name).append('(');
+        if (allArguments) {
+            sql.append('*');
+        } else if (arguments != null) {
+            sql.append(arguments.stream().map(Object::toString).collect(Collectors.joining(", ")));
+        }
+        if (orderByArguments != null) {
+            if (arguments != null && !arguments.isEmpty()) {
+                sql.append(' ');
+            }
+            sql.append("ORDER BY ").append(orderByArguments.stream().map(Object::toString)
+                    .collect(Collectors.joining(", ")));
+        }
+        return sql.append(')').toString();
+    }
+}

src/main/java/net/sf/jsqlparser/statement/StatementFeatureVisitor.java

@@ -9,6 +9,13 @@
  */
 package net.sf.jsqlparser.statement;
 
+import net.sf.jsqlparser.statement.create.type.CreateType;
+import net.sf.jsqlparser.statement.alter.AlterType;
+import net.sf.jsqlparser.statement.create.domain.CreateDomain;
+import net.sf.jsqlparser.statement.alter.AlterDomain;
+import net.sf.jsqlparser.statement.create.extension.CreateExtension;
+import net.sf.jsqlparser.statement.alter.AlterExtension;
+
 import net.sf.jsqlparser.JSQLParserException;
 import net.sf.jsqlparser.expression.Expression;
 import net.sf.jsqlparser.expression.ExpressionVisitor;
@@ -846,4 +853,46 @@ public <S> Void visit(TableFunction tableFunction, S context) {
             return super.visit(tableFunction, context);
         }
     }
+
+    @Override
+    public <S> Void visit(CreateType statement, S context) {
+        analysis.claimTopLevel();
+        analysis.certain(StmtFeature.MODIFIES_SCHEMA);
+        return null;
+    }
+
+    @Override
+    public <S> Void visit(AlterType statement, S context) {
+        analysis.claimTopLevel();
+        analysis.certain(StmtFeature.MODIFIES_SCHEMA);
+        return null;
+    }
+
+    @Override
+    public <S> Void visit(CreateDomain statement, S context) {
+        analysis.claimTopLevel();
+        analysis.certain(StmtFeature.MODIFIES_SCHEMA);
+        return null;
+    }
+
+    @Override
+    public <S> Void visit(AlterDomain statement, S context) {
+        analysis.claimTopLevel();
+        analysis.certain(StmtFeature.MODIFIES_SCHEMA);
+        return null;
+    }
+
+    @Override
+    public <S> Void visit(CreateExtension statement, S context) {
+        analysis.claimTopLevel();
+        analysis.certain(StmtFeature.MODIFIES_SCHEMA);
+        return null;
+    }
+
+    @Override
+    public <S> Void visit(AlterExtension statement, S context) {
+        analysis.claimTopLevel();
+        analysis.certain(StmtFeature.MODIFIES_SCHEMA);
+        return null;
+    }
 }

src/main/java/net/sf/jsqlparser/statement/StatementVisitor.java

@@ -9,6 +9,13 @@
  */
 package net.sf.jsqlparser.statement;
 
+import net.sf.jsqlparser.statement.create.type.CreateType;
+import net.sf.jsqlparser.statement.alter.AlterType;
+import net.sf.jsqlparser.statement.create.domain.CreateDomain;
+import net.sf.jsqlparser.statement.alter.AlterDomain;
+import net.sf.jsqlparser.statement.create.extension.CreateExtension;
+import net.sf.jsqlparser.statement.alter.AlterExtension;
+
 import net.sf.jsqlparser.statement.alter.Alter;
 import net.sf.jsqlparser.statement.alter.AlterSession;
 import net.sf.jsqlparser.statement.alter.AlterSystemStatement;
@@ -393,4 +400,51 @@ default void visit(CreatePolicy createPolicy) {
         this.visit(createPolicy, null);
     }
 
+    default <S> T visit(CreateType statement, S context) {
+        return null;
+    }
+
+    default void visit(CreateType statement) {
+        visit(statement, null);
+    }
+
+    default <S> T visit(AlterType statement, S context) {
+        return null;
+    }
+
+    default void visit(AlterType statement) {
+        visit(statement, null);
+    }
+
+    default <S> T visit(CreateDomain statement, S context) {
+        return null;
+    }
+
+    default void visit(CreateDomain statement) {
+        visit(statement, null);
+    }
+
+    default <S> T visit(AlterDomain statement, S context) {
+        return null;
+    }
+
+    default void visit(AlterDomain statement) {
+        visit(statement, null);
+    }
+
+    default <S> T visit(CreateExtension statement, S context) {
+        return null;
+    }
+
+    default void visit(CreateExtension statement) {
+        visit(statement, null);
+    }
+
+    default <S> T visit(AlterExtension statement, S context) {
+        return null;
+    }
+
+    default void visit(AlterExtension statement) {
+        visit(statement, null);
+    }
 }

src/main/java/net/sf/jsqlparser/statement/StatementVisitorAdapter.java

@@ -9,9 +9,17 @@
  */
 package net.sf.jsqlparser.statement;
 
+import net.sf.jsqlparser.statement.create.type.CreateType;
+import net.sf.jsqlparser.statement.alter.AlterType;
+import net.sf.jsqlparser.statement.create.domain.CreateDomain;
+import net.sf.jsqlparser.statement.alter.AlterDomain;
+import net.sf.jsqlparser.statement.create.extension.CreateExtension;
+import net.sf.jsqlparser.statement.alter.AlterExtension;
+
 import net.sf.jsqlparser.expression.ExpressionVisitor;
 import net.sf.jsqlparser.expression.ExpressionVisitorAdapter;
 import net.sf.jsqlparser.schema.Column;
+import net.sf.jsqlparser.schema.Table;
 import net.sf.jsqlparser.schema.Partition;
 import net.sf.jsqlparser.statement.alter.Alter;
 import net.sf.jsqlparser.statement.alter.AlterExpression;
@@ -596,4 +604,56 @@ public <S> T visit(Import imprt, S context) {
     public <S> T visit(Export export, S context) {
         return null;
     }
+
+    @Override
+    public <S> T visit(CreateType statement, S context) {
+
+        return null;
+    }
+
+    @Override
+    public <S> T visit(AlterType statement, S context) {
+
+        return null;
+    }
+
+    @Override
+    public <S> T visit(CreateDomain statement, S context) {
+        if (statement.getDefaultExpression() != null) {
+            statement.getDefaultExpression().accept(expressionVisitor, context);
+        }
+        statement.getConstraints().forEach(constraint -> {
+            if (constraint.getExpression() != null) {
+                constraint.getExpression().accept(expressionVisitor, context);
+            }
+        });
+        return null;
+    }
+
+    @Override
+    public <S> T visit(AlterDomain statement, S context) {
+        if (statement.getDefaultExpression() != null) {
+            statement.getDefaultExpression().accept(expressionVisitor, context);
+        }
+        if (statement.getConstraint() != null
+                && statement.getConstraint().getExpression() != null) {
+            statement.getConstraint().getExpression().accept(expressionVisitor, context);
+        }
+        return null;
+    }
+
+    @Override
+    public <S> T visit(CreateExtension statement, S context) {
+
+        return null;
+    }
+
+    @Override
+    public <S> T visit(AlterExtension statement, S context) {
+        if (statement.getMember() != null && statement.getMember().isTable()) {
+            new Table(statement.getMember().getName())
+                    .accept(fromItemVisitor, context);
+        }
+        return null;
+    }
 }