Add ColumnOf definitions

src/column-types.ts

@@ -0,0 +1,115 @@
+import type { ColumnShorthand } from "./columns";
+import type { Table } from "./table";
+
+export const ColumnOf = {
+  PrimaryKey: {
+    type: "INTEGER",
+    primary: true,
+    autoincrement: true,
+  },
+
+  Text: {
+    type: "TEXT",
+    nullable: false,
+  },
+
+  Int: {
+    type: "INTEGER",
+    nullable: false,
+  },
+
+  Real: {
+    type: "REAL",
+    nullable: false,
+  },
+
+  ForeignKey(otherTable: Table<unknown>, cascade = false): ColumnShorthand {
+    return {
+      type: otherTable.primaryColumnType(),
+      references: otherTable.reference(),
+      nullable: false,
+      cascade
+    };
+  },
+
+  Nullable: {
+    Text: {
+      type: "TEXT",
+      nullable: true,
+
+    },
+
+    Int: {
+      type: "INTEGER",
+      nullable: true,
+    },
+
+    Real: {
+      type: "REAL",
+      nullable: true,
+    },
+
+    ForeignKey(otherTable: Table<unknown>, cascade = false): ColumnShorthand {
+      return {
+        type: otherTable.primaryColumnType(),
+        references: otherTable.reference(),
+        nullable: true,
+        cascade,
+      };
+    },
+  },
+
+  Unique: {
+    Text: {
+      type: "TEXT",
+      nullable: false,
+      unique: true,
+    },
+
+    Int: {
+      type: "INTEGER",
+      nullable: false,
+      unique: true,
+    },
+
+    Real: {
+      type: "REAL",
+      nullable: false,
+      unique: true,
+    },
+
+    ForeignKey(otherTable: Table<unknown>, cascade = false): ColumnShorthand {
+      return {
+        type: otherTable.primaryColumnType(),
+        references: otherTable.reference(),
+        nullable: false,
+        unique: true,
+        cascade,
+      };
+    },
+  },
+
+  Defaulted: {
+    Text(defaultValue: string): ColumnShorthand {
+      return {
+        type: "TEXT",
+        default: defaultValue,
+      }
+    },
+
+    Int(defaultValue: number): ColumnShorthand {
+      return {
+        type: "INTEGER",
+        default: defaultValue,
+      } as const;
+    },
+
+    Real(defaultValue: number): ColumnShorthand {
+      return {
+        type: "REAL",
+        default: defaultValue,
+      } as const;
+    }
+  },
+
+} as const;

src/index.ts

@@ -1,5 +1,6 @@
 import type { Column, ColumnShorthand, DataType } from "./columns";
 import { Prequel } from "./prequel";
 import { Table } from "./table";
+import { ColumnOf } from "./column-types";
 
-export { Prequel, Table, type DataType, type Column, type ColumnShorthand };
+export { Prequel, Table, ColumnOf, type DataType, type Column, type ColumnShorthand };