All files / src/abap/2_statements/expressions field_length.ts

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import {seq, optPrio, altPrio, tok, regex as reg, Expression, starPrio} from "../combi";
import {ParenLeft, ParenRightW, Plus} from "../../1_lexer/tokens";
import {SourceFieldSymbol, ComponentName, ArrowOrDash, SourceField} from ".";
import {IStatementRunnable} from "../statement_runnable";
 
export class FieldLength extends Expression {
  public getRunnable(): IStatementRunnable {
    const named = seq(altPrio(SourceField, SourceFieldSymbol),
                      starPrio(seq(ArrowOrDash, ComponentName)));
 
    const normal = seq(optPrio(tok(Plus)),
                       altPrio(reg(/^\d+$/), named));
 
    const length = seq(tok(ParenLeft),
                       altPrio(normal, "*"),
                       tok(ParenRightW));
 
    return length;
  }
}