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

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import {ver, seq, tok, altPrio, optPrio, regex, Expression} from "../combi";
import {WParenLeftW, WParenRightW, WDashW, ParenLeftW, WPlus, WPlusW, Dash, ParenRightW} from "../../1_lexer/tokens";
import {CondBody, SwitchBody, ComponentChain, FieldChain, ReduceBody, TypeNameOrInfer,
  MethodCallChain, ArithOperator, Cond, Constant, StringTemplate, ConvBody, CorrespondingBody, ValueBody, FilterBody, Arrow} from ".";
import {Version} from "../../../version";
import {IStatementRunnable} from "../statement_runnable";
import {TextElement} from "./text_element";
import {AttributeChain} from "./attribute_chain";
import {Dereference} from "./dereference";
 
// todo, COND and SWITCH are quite similar?
 
// this class is used quite often, so its nice to have the differentiating tokens part of it
 
export class Source extends Expression {
  public getRunnable(): IStatementRunnable {
    const comp = seq(tok(Dash), ComponentChain);
    const attr = seq(Arrow, AttributeChain);
    const method = seq(MethodCallChain, optPrio(altPrio(attr, comp)), optPrio(Dereference));
 
    const rparen = tok(WParenRightW);
    const rparenNoSpace = altPrio(tok(ParenRightW), tok(WParenRightW));
 
// paren used for eg. "( 2 + 1 ) * 4"
    const paren = seq(tok(WParenLeftW),
                      Source,
                      rparen);
 
    const after = seq(altPrio("&", "&&", ArithOperator), Source);
 
    const bool = seq(altPrio(ver(Version.v702, regex(/^BOOLC$/i)),
                             ver(Version.v740sp08, regex(/^XSDBOOL$/i))),
                     tok(ParenLeftW),
                     Cond,
                     ")");
 
    const prefix = altPrio(tok(WDashW), tok(WPlus), tok(WPlusW), "BIT-NOT");
 
    const old = seq(optPrio(prefix), altPrio(Constant,
                                             StringTemplate,
                                             TextElement,
                                             bool,
                                             method,
                                             seq(FieldChain, optPrio(Dereference)),
                                             paren),
                    optPrio(after));
 
    const corr = ver(Version.v740sp05, seq("CORRESPONDING",
                                           TypeNameOrInfer,
                                           tok(ParenLeftW),
                                           CorrespondingBody,
                                           rparen,
                                           optPrio(after)));
 
    const conv = ver(Version.v740sp02, seq("CONV",
                                           TypeNameOrInfer,
                                           tok(ParenLeftW),
                                           ConvBody,
                                           rparenNoSpace,
                                           optPrio(after)));
 
    const swit = ver(Version.v740sp02, seq("SWITCH",
                                           TypeNameOrInfer,
                                           tok(ParenLeftW),
                                           SwitchBody,
                                           rparenNoSpace,
                                           optPrio(after)));
 
    const value = ver(Version.v740sp02, seq("VALUE",
                                            TypeNameOrInfer,
                                            tok(ParenLeftW),
                                            ValueBody,
                                            rparenNoSpace,
                                            optPrio(after)));
 
    const cond = ver(Version.v740sp02, seq("COND",
                                           TypeNameOrInfer,
                                           tok(ParenLeftW),
                                           CondBody,
                                           rparenNoSpace,
                                           optPrio(after)));
 
    const reff = ver(Version.v740sp02, seq("REF",
                                           TypeNameOrInfer,
                                           tok(ParenLeftW),
                                           Source,
                                           optPrio("OPTIONAL"),
                                           rparen));
 
    const exact = ver(Version.v740sp02, seq("EXACT",
                                            TypeNameOrInfer,
                                            tok(ParenLeftW),
                                            Source,
                                            rparen,
                                            optPrio(after)));
 
    const filter = ver(Version.v740sp08,
                       seq("FILTER",
                           TypeNameOrInfer,
                           tok(ParenLeftW),
                           FilterBody,
                           rparen));
 
    const reduce = ver(Version.v740sp08,
                       seq("REDUCE",
                           TypeNameOrInfer,
                           tok(ParenLeftW),
                           ReduceBody,
                           rparen,
                           optPrio(after)));
 
    const ret = altPrio(filter, reff, corr, conv, value, cond, exact, swit, reduce, old);
 
    return ret;
  }
}