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import {MemoryFile} from "../../files/memory_file";
import {IRegistry} from "../../_iregistry";
import {RenameDataElement} from "./rename_data_element";
import {RenameDomain} from "./rename_domain";
import {RenameGlobalClass} from "./rename_global_class";
import {RenameGlobalInterface} from "./rename_global_interface";
import {RenameTable} from "./rename_table";
import {RenameTableType} from "./rename_table_type";
import {ObjectRenamer} from "./_object_renamer";
export interface IRenameResult {
deletedFiles: Set<string>;
addedFiles: Set<string>;
updatedFiles: Set<string>;
}
export class Renamer {
private readonly reg: IRegistry;
public constructor(reg: IRegistry) {
this.reg = reg;
}
/** Applies the renaming to the objects and files in the registry,
* after renaming the registry is not parsed */
public rename(type: string, oldName: string, newName: string): IRenameResult {
const edits = this.buildEdits(type, oldName, newName);
if (edits === undefined) {
throw new Error("no changes could be determined");
} else if (edits.changes) {
throw new Error("only documentChanges expected");
}
const result = this.apply(edits);
this.reg.findIssues(); // hmm, this builds the ddic references
return result;
}
/** Builds edits, but does not apply to registry, used by LSP */
public buildEdits(type: string, oldName: string, newName: string): WorkspaceEdit | undefined {
this.reg.parse(); // the registry must be parsed to dermine references
const obj = this.reg.getObject(type, oldName);
if (obj === undefined) {
throw new Error("rename, object not found");
} else if (newName.length > obj.getAllowedNaming().maxLength) {
// todo, also do not allow strange characters and spaces
throw new Error("Name not allowed");
}
const r = this.factory(type);
return r.buildEdits(obj, oldName.toUpperCase(), newName);
}
//////////////////
private factory(type: string): ObjectRenamer {
switch (type) {
case "CLAS":
return new RenameGlobalClass(this.reg);
case "DTEL":
return new RenameDataElement(this.reg);
case "DOMA":
return new RenameDomain(this.reg);
case "TABL":
return new RenameTable(this.reg);
case "TTYP":
return new RenameTableType(this.reg);
case "INTF":
return new RenameGlobalInterface(this.reg);
default:
throw new Error("Renaming of " + type + " not yet supported");
}
}
private apply(edits: WorkspaceEdit): IRenameResult {
const renames: RenameFile[] = [];
const result: IRenameResult = {
addedFiles: new Set<string>(),
deletedFiles: new Set<string>(),
updatedFiles: new Set<string>(),
};
// assumption: only renames or text changes, no deletes or creates
for (const dc of edits.documentChanges || []) {
if (TextDocumentEdit.is(dc)) {
this.applyEdit(dc);
result.updatedFiles.add(dc.textDocument.uri);
} else if (RenameFile.is(dc)) {
renames.push(dc);
} else {
throw new Error("unexpected documentChange type");
}
}
for (const rename of renames) {
result.updatedFiles.delete(rename.oldUri);
result.deletedFiles.add(rename.oldUri);
result.addedFiles.add(rename.newUri);
}
this.applyRenames(renames);
return result;
}
private applyEdit(dc: TextDocumentEdit) {
const file = this.reg.getFileByName(dc.textDocument.uri);
if (file === undefined) {
throw new Error("file " + dc.textDocument.uri + " not found");
}
const rows = file.getRawRows();
for (const e of dc.edits) {
if (e.range.start.line !== e.range.end.line) {
throw new Error("applyEdit, start and end line differ");
}
const before = rows[e.range.start.line];
rows[e.range.start.line] = before.substring(0, e.range.start.character) +
e.newText +
before.substring(e.range.end.character);
}
const newFile = new MemoryFile(dc.textDocument.uri, rows.join("\n"));
this.reg.updateFile(newFile);
}
private applyRenames(renames: RenameFile[]) {
for (const r of renames) {
const old = this.reg.getFileByName(r.oldUri);
if (old === undefined) {
throw new Error("applyRenames, old not found");
}
const newFile = new MemoryFile(r.newUri, old.getRaw());
this.reg.removeFile(old);
this.reg.addFile(newFile);
}
}
} |