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import * as Statements from "../abap/2_statements/statements";
import {ABAPRule} from "./_abap_rule";
import {BasicRuleConfig} from "./_basic_rule_config";
import {RuleTag} from "./_irule";
import {ABAPFile} from "../abap/abap_file";
export class NestingConf extends BasicRuleConfig {
/** Maximum allowed nesting depth */
public depth: number = 5;
}
export class Nesting extends ABAPRule {
private conf = new NestingConf();
public getMetadata() {
return {
key: "nesting",
title: "Check nesting depth",
shortDescription: `Checks for methods exceeding a maximum nesting depth`,
extendedInformation: `https://github.com/SAP/styleguides/blob/main/clean-abap/CleanABAP.md#keep-the-nesting-depth-low
https://docs.abapopenchecks.org/checks/74/`,
tags: [RuleTag.Styleguide, RuleTag.SingleFile],
};
}
private getDescription(max: string): string {
return "Reduce nesting depth to max " + max;
}
public getConfig() {
return this.conf;
}
public setConfig(conf: NestingConf) {
this.conf = conf;
}
public runParsed(file: ABAPFile) {
const issues: Issue[] = [];
let depth: number = 0;
for (const statement of file.getStatements()) {
const type = statement.get();
if (type instanceof Statements.If
|| type instanceof Statements.Case
|| type instanceof Statements.While
|| type instanceof Statements.Loop
|| type instanceof Statements.SelectLoop
|| type instanceof Statements.Do
|| type instanceof Statements.Try) {
depth = depth + 1;
} else if (type instanceof Statements.EndIf
|| type instanceof Statements.EndCase
|| type instanceof Statements.EndWhile
|| type instanceof Statements.EndLoop
|| type instanceof Statements.EndSelect
|| type instanceof Statements.EndDo
|| type instanceof Statements.EndTry) {
depth = depth - 1;
}
if (depth > this.conf.depth) {
const pos = statement.getFirstToken().getStart();
const issue = Issue.atPosition(
file,
pos,
this.getDescription(this.conf.depth.toString()),
this.getMetadata().key,
this.conf.severity);
issues.push(issue);
break; // only one finding per file
}
}
return issues;
}
} |