All files / src/abap/5_syntax/statements loop.ts

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import * as Expressions from "../../2_statements/expressions";
import {StatementNode} from "../../nodes";
import {VoidType, TableType, UnknownType, DataReference, AnyType, DataType} from "../../types/basic";
import {Target} from "../expressions/target";
import {Source} from "../expressions/source";
import {InlineData} from "../expressions/inline_data";
import {InlineFS} from "../expressions/inline_fs";
import {FSTarget} from "../expressions/fstarget";
import {ComponentCond} from "../expressions/component_cond";
import {Dynamic} from "../expressions/dynamic";
import {StatementSyntax} from "../_statement_syntax";
import {LoopGroupBy} from "../expressions/loop_group_by";
import {AbstractType} from "../../types/basic/_abstract_type";
import {SyntaxInput, syntaxIssue} from "../_syntax_input";
 
export class Loop implements StatementSyntax {
  public runSyntax(node: StatementNode, input: SyntaxInput): void {
    const loopTarget = node.findDirectExpression(Expressions.LoopTarget);
 
    let target = loopTarget?.findDirectExpression(Expressions.Target);
    const targetType = target ? new Target().runSyntax(target, input) : undefined;
    if (target === undefined) {
      target = node.findDirectExpression(Expressions.FSTarget);
    }
 
    const write = loopTarget?.findDirectTokenByText("ASSIGNING") !== undefined;
 
    const sources = node.findDirectExpressions(Expressions.Source);
    let firstSource = node.findDirectExpression(Expressions.SimpleSource2);
    if (firstSource === undefined) {
      firstSource = sources[0];
    }
    let sourceType = firstSource ? new Source().runSyntax(firstSource, input, targetType, write) : undefined;
    let rowType: AbstractType | undefined = undefined;
 
    const concat = node.concatTokens().toUpperCase();
    if (sourceType === undefined) {
      // if its a dynpro table control loop, then dont issue error
      if (concat !== "LOOP.") {
        const message = "No source type determined";
        input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
      }
    } else if (sourceType instanceof UnknownType) {
      const message = "Loop, not a table type, " + sourceType.getError();
      input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
      sourceType = new VoidType("Loop, not a table type");
    } else if (sourceType instanceof TableType
        && target === undefined
        && sourceType.isWithHeader() === false
        && node.getChildren().length === 4) {
      const message = "Loop, no header line";
      input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
    } else if (!(sourceType instanceof TableType)
        && !(sourceType instanceof AnyType)
        && !(sourceType instanceof DataType)
        && !(sourceType instanceof VoidType)
        && concat.startsWith("LOOP AT GROUP ") === false) {
      const message = "Loop, not a table type";
      input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
    } else if (loopTarget === undefined
        && sourceType instanceof TableType
        && sourceType.isWithHeader() === false) {
      const message = "Loop, no header";
      input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
    }
 
    const targetConcat = loopTarget?.concatTokens().toUpperCase();
    if (sourceType instanceof TableType) {
      rowType = sourceType.getRowType();
      sourceType = rowType;
      if (targetConcat?.startsWith("REFERENCE INTO ")) {
        sourceType = new DataReference(sourceType);
      }
    }
 
    if (targetConcat
        && targetConcat.startsWith("TRANSPORTING ")
        && node.findDirectTokenByText("WHERE") === undefined) {
      const message = "Loop, TRANSPORTING NO FIELDS only with WHERE";
      input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
      return;
    }
 
    const inline = target?.findDirectExpression(Expressions.InlineData);
    if (inline) {
      new InlineData().runSyntax(inline, input, sourceType);
    }
 
    for (const s of sources) {
      if (s === firstSource) {
        continue;
      }
      new Source().runSyntax(s, input);
    }
 
    const inlinefs = target?.findDirectExpression(Expressions.InlineFS);
    if (inlinefs) {
      new InlineFS().runSyntax(inlinefs, input, sourceType);
    } else {
      const fstarget = loopTarget?.findDirectExpression(Expressions.FSTarget);
      if (fstarget) {
        new FSTarget().runSyntax(fstarget, input, sourceType);
      }
    }
 
    for (const t of node.findDirectExpressions(Expressions.ComponentCond)) {
      new ComponentCond().runSyntax(t, input, rowType);
    }
 
    for (const t of node.findDirectExpressions(Expressions.Dynamic)) {
      new Dynamic().runSyntax(t, input);
    }
 
    const group = node.findDirectExpression(Expressions.LoopGroupBy);
    if (group) {
      new LoopGroupBy().runSyntax(group, input);
    }
 
  }
}