All files / src/rules preferred_compare_operator.ts

100% Statements 101/101
94.44% Branches 17/18
100% Functions 9/9
100% Lines 101/101

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 1011x 1x 1x 1x 1x 1x 1x 1x 1x 21992x 21992x 21992x 21992x 1x 10997x 10997x 10997x 10997x 10997x 10997x 10997x 32817x 32817x 32817x 32817x 32817x 32817x 32817x 32817x 32817x 32817x 32817x 10997x 10997x 20x 20x 10997x 10997x 10444x 10444x 10997x 10997x 261x 261x 10997x 10997x 306x 306x 306x 306x 306x 12x 12x 294x 294x 306x 54x 54x 54x 20x 20x 54x 294x 294x 294x 10997x 10997x 306x 238x 238x 238x 238x 238x 238x 238x 238x 238x 238x 238x 238x 238x 238x 238x 306x 10997x 10997x 20x 20x 20x 20x 19x 19x 19x 19x 1x 1x 1x 1x 20x 10997x 10997x
import * as Expressions from "../abap/2_statements/expressions";
import {Issue} from "../issue";
import {ABAPRule} from "./_abap_rule";
import {BasicRuleConfig} from "./_basic_rule_config";
import {EditHelper} from "../edit_helper";
import {AbstractToken} from "../abap/1_lexer/tokens/abstract_token";
import {IRuleMetadata, RuleTag} from "./_irule";
import {ABAPFile} from "../abap/abap_file";
 
export class PreferredCompareOperatorConf extends BasicRuleConfig {
  /** Operators which are not allowed */
  public badOperators: string[] = ["EQ", "><", "NE", "GE", "GT", "LT", "LE"];
}
 
export class PreferredCompareOperator extends ABAPRule {
 
  private conf = new PreferredCompareOperatorConf();
 
  private readonly operatorMapping: Map<string, string> = new Map<string, string>();
 
  public getMetadata(): IRuleMetadata {
    return {
      key: "preferred_compare_operator",
      title: "Preferred compare operator",
      shortDescription: `Configure undesired operator variants`,
      tags: [RuleTag.SingleFile, RuleTag.Quickfix],
      badExample: `IF foo EQ bar.
ENDIF.`,
      goodExample: `IF foo = bar.
ENDIF.`,
    };
  }
 
  private getDescription(operator: string): string {
    return "Compare operator \"" + operator + "\" not preferred";
  }
 
  public getConfig() {
    return this.conf;
  }
 
  public setConfig(conf: PreferredCompareOperatorConf) {
    this.conf = conf;
  }
 
  public runParsed(file: ABAPFile) {
    this.buildMapping();
    const issues: Issue[] = [];
 
    const struc = file.getStructure();
    if (struc === undefined) {
      return [];
    }
 
    const operators = struc.findAllExpressionsMulti([Expressions.CompareOperator, Expressions.SQLCompareOperator]);
    for (const op of operators) {
      const token = op.getLastToken();
      // todo, performance, lookup in hash map instead(JS object)
      if (this.conf.badOperators.indexOf(token.getStr().toUpperCase()) >= 0) {
        issues.push(this.createIssue(token, file));
      }
    }
 
    return issues;
  }
 
  private buildMapping() {
    if (this.operatorMapping.size === 0) {
      this.operatorMapping.set("EQ", "=");
      this.operatorMapping.set("><", "<>");
      this.operatorMapping.set("NE", "<>");
      this.operatorMapping.set("GE", ">=");
      this.operatorMapping.set("GT", ">");
      this.operatorMapping.set("LT", "<");
      this.operatorMapping.set("LE", "<=");
 
      this.operatorMapping.set("=", "EQ");
      this.operatorMapping.set("<>", "NE");
      this.operatorMapping.set(">=", "GE");
      this.operatorMapping.set(">", "GT");
      this.operatorMapping.set("<", "LT");
      this.operatorMapping.set("<=", "LE");
    }
  }
 
  private createIssue(token: AbstractToken, file: ABAPFile): Issue {
    const message = this.getDescription(token.getStr());
    const replacementToken = this.operatorMapping?.get(token.getStr());
    // values in badOperators can be entered by the user and may not necessarily be actual operators
    if (replacementToken) {
      const fix = EditHelper.replaceRange(file, token.getStart(), token.getEnd(), replacementToken);
      const issue = Issue.atToken(file, token, message, this.getMetadata().key, this.conf.severity, fix);
      return issue;
    }
    else {
      const issue = Issue.atToken(file, token, message, this.getMetadata().key, this.conf.severity);
      return issue;
    }
  }
 
}