All files / src/rules implement_methods.ts

92.2% Statements 130/141
75.82% Branches 69/91
100% Functions 22/22
91.97% Lines 126/137

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 2841x 1x 1x     1x 1x   1x     1x       1x               1x 7292x       21668x                 7008x       114x       161x   161x 14x     147x   147x 99x   99x 3x 3x 3x 3x     96x 96x     147x           100x 109x 109x 97x     3x       1x 1x 1x 1x             96x   96x 29x   29x 2x 1x 1x   2x     27x 2x 2x 2x 2x       96x       4x 4x       4x 4x 4x 4x                     32x   32x 2x 2x 2x     30x       36x   36x 36x   30x 30x 30x 29x 29x       6x     36x         23x 8x   23x 5x 5x 5x 5x       23x       1x 1x 1x 1x                               96x   96x 27x   27x 2x 25x 2x     23x 13x 1x     12x 2x 2x 2x 2x         94x       13x 13x   13x   6x 1x 1x 1x         13x 1x 1x 1x       12x 4x 4x 4x     4x 4x 2x         10x       4x 2x 2x 2x 2x 2x         2x      
import {Issue} from "../issue";
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);
 
      if (classImplementation === undefined) {
        const message = "Class implementation for \"" + classDefinition.name + "\" not found";
        const issue = Issue.atIdentifier(classDefinition.identifier, message, this.getMetadata().key, this.conf.severity);
        ret.push(issue);
        continue;
      }
 
      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);
      Eif (def !== undefined) {
        return def;
      }
    }
    return undefined;
  }
 
  private checkClass(def: InfoClassDefinition, impl: InfoClassImplementation): 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 (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());
    Iif (file === undefined) {
      return undefined;
    }
 
    for (const i of file.getStructure()?.findAllStatements(Statements.ClassImplementation) || []) {
      const name = i.findFirstExpression(Expressions.ClassName)?.getFirstToken().getStr().toUpperCase();
      Eif (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);
      Eif (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);
    Eif (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): 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 + "\"";
          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);
        }
      }
    }
 
    return ret;
  }
 
  private isImplemented(m: IMethod, def: InfoClassDefinition, impl: InfoClassImplementation): boolean {
    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) {
        Eif (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);
      Eif (clas) {
        return this.isImplemented(m, clas?.def, clas?.impl);
      }
    }
 
    if (found === undefined) {
      for (const i of def.interfaces) {
        const idef = this.findInterfaceByName(i.name);
        Iif (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) {
      Eif (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());
        Eif (found) {
          return true;
        }
      }
    }
 
    return false;
  }
 
}