All files / src/rules indentation.ts

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import {Issue} from "../issue";
import {ABAPRule} from "./_abap_rule";
import {IObject} from "../objects/_iobject";
import {Class} from "../objects";
import {BasicRuleConfig} from "./_basic_rule_config";
import {IIndentationOptions} from "../pretty_printer/indentation_options";
import {Indent} from "../pretty_printer/indent";
import * as Statements from "../abap/2_statements/statements";
import * as Expressions from "../abap/2_statements/expressions";
import {IRuleMetadata, RuleTag} from "./_irule";
import {DDIC} from "../ddic";
import {Position, VirtualPosition} from "../position";
import {EditHelper} from "../edit_helper";
import {ABAPFile} from "../abap/abap_file";
 
export class IndentationConf extends BasicRuleConfig {
  /** Ignore global exception classes */
  public ignoreExceptions: boolean = true;
  /** Align TRY CATCH, TRY and CATCH should have the same indentation */
  public alignTryCatch: boolean = false;
  /** Add indentation for SELECTION SCREEN BLOCK, standard pretty printer indents this from 754 */
  public selectionScreenBlockIndentation: boolean = false;
  public globalClassSkipFirst: boolean = false;
  public ignoreGlobalClassDefinition: boolean = false;
  public ignoreGlobalInterface: boolean = false;
}
 
export class Indentation extends ABAPRule {
  private conf = new IndentationConf();
 
  public getMetadata(): IRuleMetadata {
    return {
      key: "indentation",
      title: "Indentation",
      shortDescription: `Checks indentation`,
      tags: [RuleTag.Whitespace, RuleTag.Quickfix, RuleTag.SingleFile],
    };
  }
 
  public getConfig() {
    return this.conf;
  }
 
  public setConfig(conf: IndentationConf) {
    this.conf = conf;
  }
 
  public runParsed(file: ABAPFile, obj: IObject) {
    const MAX_ISSUES = 100;
    let skip = false;
 
    if (file.getStructure() === undefined) {
      return []; // syntax error in file
    }
 
    if (obj instanceof Class) {
      const definition = obj.getClassDefinition();
      const ddic = new DDIC(this.reg);
      if (definition === undefined) {
        return [];
      } else if (this.conf.ignoreExceptions && ddic.isException(definition, obj)) {
        return [];
      }
    }
 
    const indentOpts: IIndentationOptions = {
      selectionScreenBlockIndentation: this.conf?.selectionScreenBlockIndentation,
      alignTryCatch: this.conf?.alignTryCatch,
      globalClassSkipFirst: this.conf.globalClassSkipFirst,
    };
 
    const expected = new Indent(indentOpts).getExpectedIndents(file);
    const ret: Issue[] = [];
 
    for (const statement of file.getStatements()) {
      const position = statement.getFirstToken().getStart();
      if (position instanceof VirtualPosition) {
        continue;
      }
 
      const indent = expected.shift();
 
      if (this.conf.ignoreGlobalClassDefinition) {
        if (statement.get() instanceof Statements.ClassDefinition
          && statement.findFirstExpression(Expressions.ClassGlobal)) {
          skip = true;
          continue;
        } else if (skip === true && statement.get() instanceof Statements.EndClass) {
          skip = false;
          continue;
        } else if (skip === true) {
          continue;
        }
      }
 
      if (this.conf.ignoreGlobalInterface) {
        if (statement.get() instanceof Statements.Interface
          && statement.findFirstExpression(Expressions.ClassGlobal)) {
          skip = true;
          continue;
        } else if (skip === true && statement.get() instanceof Statements.EndInterface) {
          skip = false;
          continue;
        } else if (skip === true) {
          continue;
        }
      }
 
      if (indent && indent > 0 && indent !== position.getCol()) {
        const expected = indent - 1;
        const fix = EditHelper.replaceRange(file, new Position(position.getRow(), 1), position, " ".repeat(expected));
        const message = "Indentation problem, expected " + expected + " spaces";
        const issue = Issue.atPosition(file, position, message, this.getMetadata().key, this.conf.severity, fix);
        ret.push(issue);
        if (ret.length >= MAX_ISSUES) {
          break;
        }
      }
    }
 
    return ret;
  }
}