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import {ABAPRule} from "./_abap_rule";
import {BasicRuleConfig} from "./_basic_rule_config";
import {ABAPObject} from "../objects/_abap_object";
import {Class, Interface} from "../objects";
import * as Statements from "../abap/2_statements/statements";
import * as Expressions from "../abap/2_statements/expressions";
import {InfoClassImplementation, InfoClassDefinition, InfoInterfaceDefinition, InfoMethodDefinition} from "../abap/4_file_information/_abap_file_information";
import {IRuleMetadata, RuleTag} from "./_irule";
import {Identifier} from "../abap/4_file_information/_identifier";
import {ABAPFile} from "../abap/abap_file";
import {EditHelper, IEdit} from "../edit_helper";
// todo: abstract methods from superclass parents(might be multiple), if class is not abstract
export class ImplementMethodsConf extends BasicRuleConfig {
}
interface IMethod {
objectName: string;
method: InfoMethodDefinition;
}
export class ImplementMethods extends ABAPRule {
private conf = new ImplementMethodsConf();
private obj: ABAPObject;
public getMetadata(): IRuleMetadata {
return {
key: "implement_methods",
title: "Implement methods",
shortDescription: `Checks for abstract methods and methods from interfaces which need implementing.`,
tags: [RuleTag.Syntax, RuleTag.Quickfix],
};
}
public getConfig() {
return this.conf;
}
public setConfig(conf: ImplementMethodsConf) {
this.conf = conf;
}
public runParsed(file: ABAPFile, obj: ABAPObject) {
let ret: Issue[] = [];
if (file.getStructure() === undefined) {
return [];
}
this.obj = obj;
for (const classDefinition of file.getInfo().listClassDefinitions()) {
const classImplementation = this.lookupImplementationInObject(classDefinition.name, obj);
ret = ret.concat(this.checkClass(classDefinition, classImplementation));
ret = ret.concat(this.checkInterfaces(classDefinition, classImplementation));
}
return ret;
}
/////////////////////////////////
private lookupImplementationInObject(name: string, obj: ABAPObject) {
for (const sub of obj.getABAPFiles()) {
const impl = sub.getInfo().getClassImplementationByName(name);
if (impl !== undefined) {
return impl;
}
}
return undefined;
}
private lookupDefinitionInObject(name: string) {
for (const sub of this.obj.getABAPFiles()) {
const def = sub.getInfo().getClassDefinitionByName(name);
if (def !== undefined) {
return def;
}
}
return undefined;
}
private checkClass(def: InfoClassDefinition, impl: InfoClassImplementation | undefined): Issue[] {
const ret: Issue[] = [];
for (const md of def.methods) {
const found = impl?.methods.find(m => m.getName().toUpperCase() === md.name.toUpperCase());
if (md.isAbstract === true) {
if (found !== undefined) {
const issue = Issue.atIdentifier(found, "Do not implement abstract method \"" + md.name + "\"", this.getMetadata().key, this.conf.severity);
ret.push(issue);
}
continue;
}
if (impl === undefined) {
const message = "Class implementation for \"" + def.name + "\" not found";
const issue = Issue.atIdentifier(def.identifier, message, this.getMetadata().key, this.conf.severity);
ret.push(issue);
} else if (found === undefined) {
const message = "Implement method \"" + md.name + "\"";
const fix = this.buildFix(impl, md.name);
const issue = Issue.atIdentifier(impl.identifier, message, this.getMetadata().key, this.conf.severity, fix);
ret.push(issue);
}
}
return ret;
}
private buildFix(impl: InfoClassImplementation, methodName: string): IEdit | undefined {
const file = this.obj.getABAPFileByName(impl.identifier.getFilename());
if (file === undefined) {
return undefined;
}
for (const i of file.getStructure()?.findAllStatements(Statements.ClassImplementation) || []) {
const name = i.findFirstExpression(Expressions.ClassName)?.getFirstToken().getStr().toUpperCase();
if (name === impl.identifier.getName().toUpperCase()) {
return EditHelper.insertAt(file, i.getLastToken().getEnd(), `
METHOD ${methodName.toLowerCase()}.
RETURN. " todo, implement method
ENDMETHOD.`);
}
}
return undefined;
}
private findInterface(identifier: Identifier, name: string): InfoInterfaceDefinition | Issue | undefined {
const idef = this.findInterfaceByName(name);
if (idef === undefined) {
const message = "Implemented interface \"" + name + "\" not found";
const issue = Issue.atIdentifier(identifier, message, this.getMetadata().key, this.conf.severity);
return issue;
}
return idef;
}
private findInterfaceByName(name: string): InfoInterfaceDefinition | undefined {
let idef: InfoInterfaceDefinition | undefined = undefined;
const intf = this.reg.getObject("INTF", name) as Interface | undefined;
if (intf === undefined) {
// lookup in localfiles
for (const file of this.obj.getABAPFiles()) {
const found = file.getInfo().getInterfaceDefinitionByName(name);
if (found) {
idef = found;
break;
}
}
} else {
idef = intf.getMainABAPFile()?.getInfo().listInterfaceDefinitions()[0];
}
return idef;
}
/** including implemented super interfaces */
private findInterfaceMethods(idef: InfoInterfaceDefinition): IMethod[] {
const methods = idef.methods.map((m) => {
return {objectName: idef.name, method: m};
});
for (const i of idef.interfaces) {
const sup = this.findInterface(idef.identifier, i.name);
if (sup !== undefined && !(sup instanceof Issue)) {
sup.methods.forEach(m => {
methods.push({objectName: sup.name, method: m});
});
}
}
return methods;
}
private findClass(name: string): {def: InfoClassDefinition, impl: InfoClassImplementation} | undefined {
let def = this.lookupDefinitionInObject(name);
let impl = this.lookupImplementationInObject(name, this.obj);
if (def && impl) {
return {def, impl};
}
const global = this.reg.getObject("CLAS", name) as Class | undefined;
if (global) {
def = global.getClassDefinition();
impl = this.lookupImplementationInObject(name, global);
if (def && impl) {
return {def, impl};
}
}
return undefined;
}
private checkInterfaces(def: InfoClassDefinition, impl: InfoClassImplementation | undefined): Issue[] {
const ret: Issue[] = [];
for (const interfaceInfo of def.interfaces) {
const idef = this.findInterface(def.identifier, interfaceInfo.name);
if (idef === undefined || interfaceInfo.partial === true || interfaceInfo.allAbstract === true) {
continue; // ignore parser errors in interface
} else if (idef instanceof Issue) {
return [idef];
}
for (const m of this.findInterfaceMethods(idef)) {
if (interfaceInfo.abstractMethods.includes(m.method.name.toUpperCase())) {
continue;
}
if (this.isImplemented(m, def, impl) === false) {
const message = "Implement method \"" + m.method.name + "\" from interface \"" + m.objectName + "\"";
if (impl) {
const fix = this.buildFix(impl, m.objectName + "~" + m.method.name);
const issue = Issue.atIdentifier(impl.identifier, message, this.getMetadata().key, this.conf.severity, fix);
ret.push(issue);
} else {
const issue = Issue.atIdentifier(def.identifier, message, this.getMetadata().key, this.conf.severity);
ret.push(issue);
}
}
}
}
return ret;
}
private isImplemented(m: IMethod, def: InfoClassDefinition, impl: InfoClassImplementation | undefined): boolean {
if (impl === undefined) {
return false;
}
const name = m.objectName + "~" + m.method.name;
let found = impl.methods.find(m => m.getName().toUpperCase() === name.toUpperCase());
if (found === undefined) {
// try looking for ALIASes
for (const alias of def.aliases) {
if (alias.component.toUpperCase() === name.toUpperCase()) {
found = impl.methods.find(m => m.getName().toUpperCase() === alias.name.toUpperCase());
break;
}
}
}
if (found === undefined && def.superClassName !== undefined) {
const clas = this.findClass(def.superClassName);
if (clas) {
return this.isImplemented(m, clas?.def, clas?.impl);
}
}
if (found === undefined) {
for (const i of def.interfaces) {
const idef = this.findInterfaceByName(i.name);
if (idef === undefined) {
continue;
}
const ali = this.viaAliasInInterface(m, idef, impl);
if (ali) {
return ali;
}
}
}
return found !== undefined;
}
private viaAliasInInterface(m: IMethod, intf: InfoInterfaceDefinition, impl: InfoClassImplementation): boolean {
for (const a of intf.aliases) {
if (a.component.toUpperCase() === m.objectName.toUpperCase() + "~" + m.method.name.toUpperCase()) {
const name = intf.name + "~" + a.name;
const found = impl.methods.find(m => m.getName().toUpperCase() === name.toUpperCase());
if (found) {
return true;
}
}
}
return false;
}
} |