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| 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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 23015x 23015x 23015x 23015x 1x 11511x 11511x 11511x 11511x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 34375x 11511x 11511x 10978x 10978x 11511x 11511x 251x 251x 11511x 11511x 280x 280x 280x 280x 12x 12x 268x 268x 268x 268x 268x 268x 280x 1573x 1573x 1573x 1573x 1573x 75x 75x 75x 1498x 1573x 1475x 1475x 1498x 1498x 1573x 1573x 1423x 1423x 75x 75x 75x 75x 1573x 5x 2x 2x 3x 3x 3x 3x 73x 73x 73x 73x 1573x 1573x 1573x 1x 1x 1x 1573x 268x 268x 268x 11511x 11511x | import {Issue} from "../issue";
import {ABAPRule} from "./_abap_rule";
import {BasicRuleConfig} from "./_basic_rule_config";
import {IRuleMetadata, RuleTag} from "./_irule";
import {ABAPFile} from "../abap/abap_file";
import * as Statements from "../abap/2_statements/statements";
import {EditHelper} from "../edit_helper";
import {Comment} from "../abap/2_statements/statements/_statement";
export class UnnecessaryReturnConf extends BasicRuleConfig {
/** Allow empty METHODs + FORMs + FUNCTION-MODULEs */
public allowEmpty = false;
}
export class UnnecessaryReturn extends ABAPRule {
private conf = new UnnecessaryReturnConf();
public getMetadata(): IRuleMetadata {
return {
key: "unnecessary_return",
title: "Unnecessary Return",
shortDescription: `Finds unnecessary RETURN statements`,
extendedInformation: `Finds unnecessary RETURN statements`,
tags: [RuleTag.SingleFile, RuleTag.Quickfix],
badExample: `FORM hello1.
WRITE 'world'.
RETURN.
ENDFORM.
FORM foo.
IF 1 = 2.
RETURN.
ENDIF.
ENDFORM.`,
goodExample: `FORM hello2.
WRITE 'world'.
ENDFORM.`,
};
}
public getConfig() {
return this.conf;
}
public setConfig(conf: UnnecessaryReturnConf) {
this.conf = conf;
}
public runParsed(file: ABAPFile) {
const issues: Issue[] = [];
const structure = file.getStructure();
if (structure === undefined) {
return [];
}
const message = "Unnecessary RETURN";
const statements = file.getStatements();
let statementCounter = 0;
for (let i = 0; i < statements.length; i++) {
const node = statements[i];
const nodeType = node.get();
if (nodeType instanceof Statements.MethodImplementation
|| nodeType instanceof Statements.Form
|| nodeType instanceof Statements.FunctionModule) {
statementCounter = 0;
continue;
}
if (!(nodeType instanceof Comment)) {
statementCounter++;
}
if (!(nodeType instanceof Statements.EndMethod
|| nodeType instanceof Statements.EndForm
|| nodeType instanceof Statements.EndFunction)) {
continue;
}
const prev = statements[i - 1];
if (prev
&& prev.get() instanceof Statements.Return
&& prev.getChildren().length === 2) {
if (this.conf.allowEmpty === true && statementCounter === 2) {
continue;
}
const fix = EditHelper.deleteStatement(file, prev);
issues.push(Issue.atStatement(file, prev, message, this.getMetadata().key, this.getConfig().severity, fix));
}
// note: ENDTRY is not checked, it will usually just make it an empty catch handler, which is also bad
const prevprev = statements[i - 2];
if (prev && prevprev
&& prevprev.get() instanceof Statements.Return
&& prevprev.getChildren().length === 2
&& prev.get() instanceof Statements.EndIf) {
const fix = EditHelper.deleteStatement(file, prevprev);
issues.push(Issue.atStatement(file, prevprev, message, this.getMetadata().key, this.getConfig().severity, fix));
}
}
return issues;
}
} |