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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 {SyntaxLogic} from "../abap/5_syntax/syntax";
import {ABAPObject} from "../objects/_abap_object";
import {ISpaghettiScopeNode} from "../abap/5_syntax/_spaghetti_scope";
import {ReferenceType} from "../abap/5_syntax/_reference";
import {MethodDefinition} from "../abap/types";
import {Position} from "../position";
export class StaticCallViaInstanceConf extends BasicRuleConfig {
/** Allow in test class includes */
public allowInTestclassIncludes?: boolean = false;
}
export class StaticCallViaInstance extends ABAPRule {
private conf = new StaticCallViaInstanceConf();
public getMetadata(): IRuleMetadata {
return {
key: "static_call_via_instance",
title: "Static call via instance variable",
shortDescription: `Static method call via instance variable`,
extendedInformation: `https://github.com/SAP/styleguides/blob/main/clean-abap/CleanABAP.md#dont-call-static-methods-through-instance-variables`,
tags: [RuleTag.Styleguide],
badExample: `METHOD run.
NEW lcl_helper( )->static_method( ).
ENDMETHOD.`,
goodExample: `METHOD run.
lcl_helper=>static_method( ).
ENDMETHOD.`,
};
}
public getConfig() {
return this.conf;
}
public setConfig(conf: StaticCallViaInstanceConf) {
this.conf = conf;
}
public runParsed(file: ABAPFile, obj: ABAPObject): Issue[] {
const issues: Issue[] = [];
if (this.getConfig().allowInTestclassIncludes === true && file.getFilename().includes(".testclasses.")) {
return [];
}
const staticMethodCalls = this.listMethodCalls(file.getFilename(), new SyntaxLogic(this.reg, obj).run().spaghetti.getTop());
const tokens = file.getTokens();
for (let i = 0; i < tokens.length - 1; i++) {
const token = tokens[i];
if (token.getStr() !== "->") {
continue;
}
const next = tokens[i + 1];
for (const s of staticMethodCalls) {
if (s.equals(next!.getStart())) {
const message = "Avoid calling static method via instance";
issues.push(Issue.atToken(file, token, message, this.getMetadata().key));
break;
}
}
}
return issues;
}
private listMethodCalls(filename: string, node: ISpaghettiScopeNode): Position[] {
const ret: Position[] = [];
for (const r of node.getData().references) {
if (r.referenceType !== ReferenceType.MethodReference || r.position.getFilename() !== filename) {
continue;
}
if (r.resolved instanceof MethodDefinition && r.resolved.isStatic() === true) {
ret.push(r.position.getStart());
}
}
for (const child of node.getChildren()) {
ret.push(...this.listMethodCalls(filename, child));
}
return ret;
}
}
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