All files / src/rules obsolete_statement.ts

99.36% Statements 468/471
98.41% Branches 124/126
100% Functions 7/7
99.36% Lines 468/471

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 4721x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 18738x 1x 9378x 9378x 9378x 9378x 9378x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 27986x 9378x 9378x 8898x 8898x 9378x 9378x 216x 216x 9378x 9378x 338x 338x 338x 338x 338x 338x 338x 1455x 1455x 1455x 1455x 1455x 1455x 1455x 1455x 1455x 1455x 1435x 1435x 1455x 27x 26x 26x 26x 26x 26x 27x 27x 1455x 1455x 1x 1x 1x 1455x 1455x 1x 1x 1x 1455x 1455x 1x 1x 1x 1455x 1455x 4x 4x 4x 2x 2x 2x 2x 4x 1455x 1455x 3x 3x 3x 2x 2x 2x 2x 2x 3x 3x 3x 3x 1455x 1455x 1455x 1455x 1455x 3x 3x 1x 1x 1x 3x 1455x 1455x 28x 28x 28x 4x 4x 4x 4x 28x 28x 1455x 1455x 1455x 1455x 1455x 1455x 33x 33x 5x 5x 5x 33x 1455x 1455x 115x 115x 1x 1x 1x 115x 1455x 1455x 1455x 114x 2x 2x 2x 2x 2x 2x 114x 1455x 1455x 3x 3x 1x 1x 1x 3x 1455x 1455x 2x 2x 2x 2x 1455x 1455x 2x 2x 1x 1x 1x 2x 1455x 1455x 6x 6x 1x 1x 1x 6x 1455x 1455x 2x 2x 2x 1x 1x 1x 2x 1455x 1455x 2x 2x 2x 1x 1x 1x 2x 1455x 1455x 4x 4x 1x 1x 1x 4x 1455x 1455x 1x 1x 1x 1455x 1455x 32x 1x 1x 1x 32x 1455x 1455x 1455x 1455x 1455x 1455x 1455x 1455x 8x 8x 1x 1x 1x 8x 1455x 1455x 1448x 6x 2x 2x 2x 6x 1442x 1442x 1442x 1442x 1442x 14x 14x 14x 14x 2x 1x 1x 1x 2x 12x 1x 1x 1x 1x 1x 14x 1442x 1448x 1455x 338x 338x 9378x 9378x 26x 3x 1x 1x 2x 2x 2x 23x 4x 4x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 4x 19x 19x 5x 5x 5x 5x 5x 5x 3x 3x 2x 2x 2x 5x 5x 5x 14x 14x 4x 4x 4x 4x 4x 4x 2x 2x 2x 2x 2x 4x 4x 4x 10x 6x 1x 1x 5x 5x 5x 5x 5x 5x 6x 3x 3x 2x 2x 2x 5x 5x 5x 5x 5x 4x 4x 4x 4x 4x 2x 2x 2x 2x 2x 4x 4x 4x 4x 4x       9378x  
import * as Statements from "../abap/2_statements/statements";
import * as Expressions from "../abap/2_statements/expressions";
import {Issue} from "../issue";
import {ABAPRule} from "./_abap_rule";
import {ABAPFile} from "../abap/abap_file";
import {BasicRuleConfig} from "./_basic_rule_config";
import {Position} from "../position";
import {IRuleMetadata, RuleTag} from "./_irule";
import {Version} from "../version";
import {EditHelper, IEdit} from "../edit_helper";
import {IStatement} from "../abap/2_statements/statements/_statement";
import {ExpressionNode, StatementNode} from "../abap/nodes";
import {SourceFieldSymbol} from "../abap/2_statements/expressions";
 
 
export class ObsoleteStatementConf extends BasicRuleConfig {
  /** Check for REFRESH statement */
  public refresh: boolean = true;
  /** Check for COMPUTE statement */
  public compute: boolean = true;
  /** Check for ADD statement */
  public add: boolean = true;
  /** Check for SUBTRACT statement */
  public subtract: boolean = true;
  /** Check for MULTIPLY statement */
  public multiply: boolean = true;
  /** Check for DIVIDE statement */
  public divide: boolean = true;
  /** Check for MOVE statement */
  public move: boolean = true;
  /** Checks for usages of IS REQUESTED */
  public requested: boolean = true;
  /** Checks for usages of OCCURS */
  public occurs: boolean = true;
  /** Checks for SET EXTENDED CHECK */
  public setExtended: boolean = true;
  /** Checks for WITH HEADER LINE */
  public withHeaderLine: boolean = true;
  /** Checks for FIELD-SYMBOLS ... STRUCTURE */
  public fieldSymbolStructure: boolean = true;
  /** Checks for TYPE-POOLS */
  public typePools: boolean = true;
  /** Checks for addition LOAD */
  public load: boolean = true;
  /** Checks for PARAMETER */
  public parameter: boolean = true;
  /** Checks for RANGES */
  public ranges: boolean = true;
  /** Checks for COMMUNICATION */
  public communication: boolean = true;
  /** Checks for PACK */
  public pack: boolean = true;
  /** Checks for SELECT without INTO */
  public selectWithoutInto: boolean = true;
  /** FREE MEMORY, without ID */
  public freeMemory: boolean = true;
  /** Checks for EXIT FROM SQL */
  public exitFromSQL: boolean = true;
  /** Checks for SORT itab BY <fs> */
  public sortByFS: boolean = true;
  /** Checks for CALL TRANSFORMATION OBJECTS */
  public callTransformation: boolean = true;
  /** Check for POSIX REGEX usage */
  public regex: boolean = true;
  /** Check for OCCURENCES vs OCCURRENCES usage */
  public occurences: boolean = true;
  /** Check for CLIENT SPECIFIED */
  public clientSpecified: boolean = true;
  /** Check for FORM DEFINITION */
  public formDefinition: boolean = true;
  /** Check for FORM IMPLEMENTATION */
  public formImplementation: boolean = true;
}
 
export class ObsoleteStatement extends ABAPRule {
 
  private conf = new ObsoleteStatementConf();
 
  public getMetadata(): IRuleMetadata {
    return {
      key: "obsolete_statement",
      title: "Obsolete statements",
      shortDescription: `Checks for usages of certain obsolete statements`,
      tags: [RuleTag.SingleFile, RuleTag.Styleguide, RuleTag.Quickfix],
      extendedInformation: `
https://github.com/SAP/styleguides/blob/main/clean-abap/CleanABAP.md#prefer-functional-to-procedural-language-constructs
 
https://github.com/SAP/styleguides/blob/main/clean-abap/CleanABAP.md#avoid-obsolete-language-elements
 
SET EXTENDED CHECK: https://help.sap.com/doc/abapdocu_751_index_htm/7.51/en-us/abapset_extended_check.htm
 
IS REQUESTED: https://help.sap.com/doc/abapdocu_750_index_htm/7.50/en-US/abenlogexp_requested.htm
 
WITH HEADER LINE: https://help.sap.com/doc/abapdocu_750_index_htm/7.50/en-US/abapdata_header_line.htm
 
FIELD-SYMBOLS STRUCTURE: https://help.sap.com/doc/abapdocu_751_index_htm/7.51/en-us/abapfield-symbols_obsolete_typing.htm
 
TYPE-POOLS: from 702, https://help.sap.com/doc/abapdocu_752_index_htm/7.52/en-US/abennews-71-program_load.htm
 
LOAD addition: from 702, https://help.sap.com/doc/abapdocu_752_index_htm/7.52/en-US/abennews-71-program_load.htm
 
COMMUICATION: https://help.sap.com/doc/abapdocu_751_index_htm/7.51/en-us/abapcommunication.htm
 
OCCURS: https://help.sap.com/doc/abapdocu_751_index_htm/7.51/en-us/abapdata_occurs.htm
 
PARAMETER: https://help.sap.com/doc/abapdocu_751_index_htm/7.51/en-US/abapparameter.htm
 
RANGES: https://help.sap.com/doc/abapdocu_752_index_htm/7.52/en-US/abapranges.htm
 
PACK: https://help.sap.com/doc/abapdocu_751_index_htm/7.51/en-us/abappack.htm
 
MOVE: https://help.sap.com/doc/abapdocu_751_index_htm/7.51/en-us/abapmove_obs.htm
 
SELECT without INTO: https://help.sap.com/doc/abapdocu_731_index_htm/7.31/en-US/abapselect_obsolete.htm
SELECT COUNT(*) is considered okay
 
FREE MEMORY: https://help.sap.com/doc/abapdocu_752_index_htm/7.52/en-us/abapfree_mem_id_obsolete.htm
 
SORT BY FS: https://help.sap.com/doc/abapdocu_752_index_htm/7.52/en-US/abapsort_itab_obsolete.htm
 
CALL TRANSFORMATION OBJECTS: https://help.sap.com/doc/abapdocu_752_index_htm/7.52/en-US/abapcall_transformation_objects.htm
 
POSIX REGEX: https://help.sap.com/doc/abapdocu_755_index_htm/7.55/en-US/index.htm
 
OCCURENCES: check for OCCURENCES vs OCCURRENCES
 
CLIENT SPECIFIED, from 754: https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm?file=abapselect_client_obsolete.htm`,
    };
  }
 
  public getConfig() {
    return this.conf;
  }
 
  public setConfig(conf: ObsoleteStatementConf) {
    this.conf = conf;
  }
 
  public runParsed(file: ABAPFile) {
    const issues: Issue[] = [];
 
    const statements = file.getStatements();
    let prev: Position | undefined = undefined;
    const configVersion = this.reg.getConfig().getVersion();
 
    for (const staNode of statements) {
      const sta = staNode.get();
      if ((sta instanceof Statements.Refresh && this.conf.refresh)
          || (sta instanceof Statements.Compute && this.conf.compute)
          || (sta instanceof Statements.Add && this.conf.add)
          || (sta instanceof Statements.Subtract && this.conf.subtract)
          || (sta instanceof Statements.ClassDefinitionLoad && this.conf.load && configVersion >= Version.v702)
          || (sta instanceof Statements.InterfaceLoad && this.conf.load && configVersion >= Version.v702)
          || (sta instanceof Statements.Multiply && this.conf.multiply)
          || (sta instanceof Statements.Divide && this.conf.divide)
          || (sta instanceof Statements.Move && this.conf.move
          && staNode.getTokens()[0].getStr().toUpperCase() === "MOVE"
          && staNode.getTokens()[1].getStr() !== "-"
          && staNode.getTokens()[1].getStr().toUpperCase() !== "EXACT") ) {
        if (prev === undefined || staNode.getStart().getCol() !== prev.getCol() || staNode.getStart().getRow() !== prev.getRow()) {
          const message = "Statement \"" + staNode.getFirstToken().getStr() + "\" is obsolete";
          const fix = this.getFix(file, sta, staNode);
          const issue = Issue.atStatement(file, staNode, message, this.getMetadata().key, this.conf.severity, fix);
          issues.push(issue);
        }
        prev = staNode.getStart();
      }
 
      if (this.conf.setExtended && sta instanceof Statements.SetExtendedCheck) {
        const issue = Issue.atStatement(file, staNode, "SET EXTENDED CHECK is obsolete", this.getMetadata().key, this.conf.severity);
        issues.push(issue);
      }
 
      if (this.conf.communication && sta instanceof Statements.Communication) {
        const issue = Issue.atStatement(file, staNode, "COMMUNICATION is obsolete", this.getMetadata().key, this.conf.severity);
        issues.push(issue);
      }
 
      if (this.conf.pack && sta instanceof Statements.Pack) {
        const issue = Issue.atStatement(file, staNode, "PACK is obsolete", this.getMetadata().key, this.conf.severity);
        issues.push(issue);
      }
 
      if (this.conf.parameter && sta instanceof Statements.Parameter) {
        const token = staNode.getFirstToken();
 
        if (token.getStr().toUpperCase() === "PARAMETER") {
          const fix = EditHelper.replaceToken(file, token, "PARAMETERS");
          const issue = Issue.atStatement(file, staNode, "Use PARAMETERS instead of PARAMETER", this.getMetadata().key, this.conf.severity, fix);
          issues.push(issue);
        }
      }
 
      if (this.conf.ranges && sta instanceof Statements.Ranges) {
        const children = staNode.getChildren();
        let fix = undefined;
        if (children.length === 5) {
          const simpleNameString = children[1].concatTokens();
          const fieldSubString = children[3].concatTokens();
          const replacement = "TYPES " + simpleNameString + " LIKE RANGE OF " + fieldSubString + ".";
          fix = EditHelper.replaceRange(file, staNode.getStart(), staNode.getEnd(), replacement);
        }
 
        const issue = Issue.atStatement(file, staNode, "Use LIKE RANGE OF instead of RANGES", this.getMetadata().key, this.conf.severity, fix);
        issues.push(issue);
      }
 
      if (this.conf.selectWithoutInto
          && (sta instanceof Statements.Select || sta instanceof Statements.SelectLoop)
          && staNode.findFirstExpression(Expressions.SQLIntoStructure) === undefined
          && staNode.findFirstExpression(Expressions.SQLIntoTable) === undefined) {
        const concat = staNode.findFirstExpression(Expressions.SQLFieldList)?.concatTokens().toUpperCase();
        if (concat !== "COUNT(*)" && concat !== "COUNT( * )") {
          const issue = Issue.atStatement(file, staNode, "SELECT without INTO", this.getMetadata().key, this.conf.severity);
          issues.push(issue);
        }
      }
 
      if (this.conf.requested && sta instanceof Statements.If) {
        for (const compare of staNode.findAllExpressions(Expressions.Compare)) {
          const token = compare.findDirectTokenByText("REQUESTED");
          if (token) {
            const fix = EditHelper.replaceToken(file, token, "SUPPLIED");
            const issue = Issue.atToken(file, token, "IS REQUESTED is obsolete", this.getMetadata().key, this.conf.severity, fix);
            issues.push(issue);
          }
        }
      }
 
      if (this.conf.occurs) {
        if ((sta instanceof Statements.Describe)
          || (sta instanceof Statements.Ranges)
          || (sta instanceof Statements.DataBegin)
          || (sta instanceof Statements.TypeBegin)) {
          const token = staNode.findDirectTokenByText("OCCURS");
          if (token) {
            const issue = Issue.atToken(file, token, "OCCURS is obsolete", this.getMetadata().key, this.conf.severity);
            issues.push(issue);
          }
        }
 
        for (const dataDef of staNode.findAllExpressions(Expressions.DataDefinition)) {
          const token = dataDef.findDirectExpression(Expressions.TypeTable)?.findDirectTokenByText("OCCURS");
          if (token) {
            const issue = Issue.atToken(file, token, "OCCURS is obsolete", this.getMetadata().key, this.conf.severity);
            issues.push(issue);
          }
        }
      }
 
      if (this.conf.withHeaderLine === true && sta instanceof Statements.Data) {
        if (staNode.concatTokens().toUpperCase().includes("WITH HEADER LINE")) {
          const token = staNode.getTokens().find(t => t.getStr().toUpperCase() === "WITH");
          if (token) {
            const issue = Issue.atToken(file, token, "WITH HEADER LINE is obsolete", this.getMetadata().key, this.conf.severity);
            issues.push(issue);
          }
        }
      }
 
      if (this.conf.fieldSymbolStructure && sta instanceof Statements.FieldSymbol){
        const token = staNode.findDirectTokenByText("STRUCTURE");
        if (token) {
          const issue = Issue.atToken(file, token, "FIELD-SYMBOLS ... STRUCTURE is obsolete", this.getMetadata().key, this.conf.severity);
          issues.push(issue);
        }
      }
 
      if (this.conf.typePools && sta instanceof Statements.TypePools && configVersion >= Version.v702){
        const fix = EditHelper.deleteStatement(file, staNode);
        const issue = Issue.atStatement(file, staNode, "Statement \"TYPE-POOLS\" is obsolete", this.getMetadata().key, this.conf.severity, fix);
        issues.push(issue);
      }
 
      if (this.conf.freeMemory && sta instanceof Statements.FreeMemory) {
        const concat = staNode.concatTokens().toUpperCase();
        if (concat === "FREE MEMORY.") {
          const issue = Issue.atStatement(file, staNode, "Statement \"FREE MEMORY\" without ID is obsolete", this.getMetadata().key, this.conf.severity);
          issues.push(issue);
        }
      }
 
      if (this.conf.exitFromSQL && sta instanceof Statements.Exit) {
        const concat = staNode.concatTokens().toUpperCase();
        if (concat === "EXIT FROM SQL.") {
          const issue = Issue.atStatement(file, staNode, "Statement \"EXIT FROM SQL\" is obsolete", this.getMetadata().key, this.conf.severity);
          issues.push(issue);
        }
      }
 
      if (this.conf.sortByFS && sta instanceof Statements.Sort) {
        const afterBy = staNode.findExpressionAfterToken("BY");
 
        if (afterBy instanceof ExpressionNode && afterBy.get() instanceof SourceFieldSymbol) {
          const issue = Issue.atStatement(file, staNode, "Statement \"SORT itab BY <fs>\" is obsolete", this.getMetadata().key, this.conf.severity);
          issues.push(issue);
        }
      }
 
      if (this.conf.callTransformation && sta instanceof Statements.CallTransformation) {
        const objects = staNode.findExpressionAfterToken("OBJECTS");
 
        if (objects) {
          const issue = Issue.atStatement(file, staNode, "Use PARAMETERS instead of OBJECTS", this.getMetadata().key, this.conf.severity);
          issues.push(issue);
        }
      }
 
      if (this.conf.occurences && sta instanceof Statements.Replace) {
        const concat = staNode.concatTokens().toUpperCase();
        if (concat.includes(" OCCURENCES ")) {
          const issue = Issue.atStatement(file, staNode, "Use \"OCCURRENCES\"", this.getMetadata().key, this.conf.severity);
          issues.push(issue);
        }
      }
 
      if (this.conf.formDefinition && sta instanceof Statements.FormDefinition) {
        const issue = Issue.atStatement(file, staNode, "FORM DEFINITION", this.getMetadata().key, this.conf.severity);
        issues.push(issue);
      }
 
      if (this.conf.formImplementation && sta instanceof Statements.Form) {
        if (staNode.findDirectTokenByText("IMPLEMENTATION")) {
          const issue = Issue.atStatement(file, staNode, "FORM IMPLEMENTATION", this.getMetadata().key, this.conf.severity);
          issues.push(issue);
        }
      }
 
      if (configVersion >= Version.v754 && this.conf.clientSpecified
          && (sta instanceof Statements.Select
          || sta instanceof Statements.SelectLoop
          || sta instanceof Statements.DeleteDatabase
          || sta instanceof Statements.InsertDatabase
          || sta instanceof Statements.ModifyDatabase
          || sta instanceof Statements.UpdateDatabase)) {
        const concat = staNode.concatTokens().toUpperCase();
        if (concat.includes(" CLIENT SPECIFIED")) {
          const issue = Issue.atStatement(file, staNode, "Use USING CLIENT", this.getMetadata().key, this.conf.severity);
          issues.push(issue);
        }
      }
 
      if (configVersion >= Version.v756 && this.conf.regex) {
        if (sta instanceof Statements.Find || sta instanceof Statements.Replace) {
          if (staNode.findFirstExpression(Expressions.FindType)?.concatTokens().includes("REGEX")) {
            const issue = Issue.atStatement(file, staNode, "REGEX obsolete, use PCRE", this.getMetadata().key, this.conf.severity);
            issues.push(issue);
          }
        }
        else {
          const classNameExpression = staNode.findAllExpressions(Expressions.ClassName);
          const methodNameExpression = staNode.findAllExpressions(Expressions.MethodName);
 
          if (classNameExpression.length !== 0 && methodNameExpression.length !== 0) {
            const className = classNameExpression[0].concatTokens();
            const methodName = methodNameExpression[0].concatTokens();
 
            if (className === "cl_abap_regex") {
              if (methodName === "create_posix") {
                const issue = Issue.atStatement(file, staNode, "create_posix obsolete, use create_pcre", this.getMetadata().key, this.conf.severity);
                issues.push(issue);
              }
            }
            else if (className === "cl_abap_matcher") {
              if (methodName.includes("posix")) {
                const issue = Issue.atStatement(file, staNode, "posix methods obsolete, use pcre methods", this.getMetadata().key, this.conf.severity);
                issues.push(issue);
              }
            }
          }
        }
      }
    }
    return issues;
  }
 
  private getFix(file: ABAPFile, statement: IStatement, statementNode: StatementNode): IEdit | undefined {
    if (statement instanceof Statements.Refresh) {
      if (statementNode.getChildren().length === 6) {
        return undefined;
      }
 
      return EditHelper.replaceToken(file, statementNode.getFirstToken(), "CLEAR");
    }
    else if (statement instanceof Statements.Compute) {
      const children = statementNode.getChildren();
      if (children.length === 5) {
        const tokenForDeletion = statementNode.getFirstToken();
        let endPosition = tokenForDeletion.getEnd();
        endPosition = new Position(endPosition.getRow(), endPosition.getCol() + 1);
        return EditHelper.deleteRange(file, tokenForDeletion.getStart(), endPosition);
      }
      else {
        const targetString = children[2].concatTokens();
        const sourceString = children[4].concatTokens();
        const replacement = targetString + " = EXACT #( " + sourceString + " ).";
        return EditHelper.replaceRange(file, statementNode.getStart(), statementNode.getEnd(), replacement);
      }
    }
    else if (statement instanceof Statements.Add ||
            statement instanceof Statements.Subtract) {
      const children = statementNode.getChildren();
      const sourceString = children[1].concatTokens();
      const targetString = children[3].concatTokens();
      let replacement = "";
 
      if (statement instanceof Statements.Add) {
        replacement = targetString + " = " + targetString + " + " + sourceString + ".";
      }
      else if (statement instanceof Statements.Subtract) {
        replacement = targetString + " = " + targetString + " - " + sourceString + ".";
      }
 
      return EditHelper.replaceRange(file, statementNode.getStart(), statementNode.getEnd(), replacement);
    }
    else if (statement instanceof Statements.Multiply ||
          statement instanceof Statements.Divide) {
      const children = statementNode.getChildren();
      const targetString = children[1].concatTokens();
      const sourceString = children[3].concatTokens();
      let replacement = "";
 
      if (statement instanceof Statements.Multiply) {
        replacement = targetString + " = " + targetString + " * " + sourceString + ".";
      }
      else if (statement instanceof Statements.Divide) {
        replacement = targetString + " = " + targetString + " / " + sourceString + ".";
      }
 
      return EditHelper.replaceRange(file, statementNode.getStart(), statementNode.getEnd(), replacement);
    }
    else if (statement instanceof Statements.Move) {
      if (statementNode.getColon() !== undefined) {
        return undefined;
      }
 
      const children = statementNode.getChildren();
      const sourceString = children[1].concatTokens();
      const targetString = children[3].concatTokens();
 
      let operator = children[2].concatTokens();
      if (operator === "TO") {
        operator = " = ";
      }
      else {
        operator = " ?= ";
      }
 
      const replacement = targetString + operator + sourceString + ".";
 
      return EditHelper.replaceRange(file, statementNode.getStart(), statementNode.getEnd(), replacement);
    }
    else if (statement instanceof Statements.ClassDefinitionLoad ||
            statement instanceof Statements.InterfaceLoad) {
 
      let token = undefined;
      if (statement instanceof Statements.ClassDefinitionLoad) {
        token = statementNode.getChildren()[3].getFirstToken();
      }
      else {
        token = statementNode.getChildren()[2].getFirstToken();
      }
 
      let startPosition = token.getStart();
      startPosition = new Position(startPosition.getRow(), startPosition.getCol() - 1);
      return EditHelper.deleteRange(file, startPosition, token.getEnd());
    }

    return undefined;
  }
}