All files / src/abap/5_syntax/expressions method_call_chain.ts

96.06% Statements 122/127
86.88% Branches 53/61
100% Functions 2/2
96.06% Lines 122/127

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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 1271x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 237x 237x 237x 237x 237x 237x 237x 237x 237x 237x     237x 237x 237x 81x 81x 226x 237x 291x 291x     291x 291x 185x 185x 185x 185x 185x 185x 185x 185x 50x 50x 46x 46x 185x 135x 135x 135x 135x 135x 185x 8x 8x 8x 8x 8x 8x 185x 185x 2x 185x 7x 183x 147x 147x 147x 178x 178x 185x 147x 185x 29x 29x 291x   106x 1x 1x 291x 202x 202x 202x 1x 1x 1x 1x 237x 59x 59x 59x 59x 17x 17x 17x 59x 3x 3x 39x 39x 237x 33x 178x 59x 145x 5x 86x 81x 81x 34x 34x 81x 47x 47x 1x 1x
import {ExpressionNode} from "../../nodes";
import {CurrentScope} from "../_current_scope";
import * as Expressions from "../../2_statements/expressions";
import {AbstractType} from "../../types/basic/_abstract_type";
import {VoidType, ObjectReferenceType} from "../../types/basic";
import {FieldChain} from "./field_chain";
import {INode} from "../../nodes/_inode";
import {ObjectOriented} from "../_object_oriented";
import {NewObject} from "./new_object";
import {Cast} from "./cast";
import {BuiltIn} from "../_builtin";
import {MethodCallParam} from "./method_call_param";
import {IReferenceExtras, ReferenceType} from "../_reference";
import {ComponentName} from "./component_name";
import {AttributeName} from "./attribute_name";
import {ClassDefinition} from "../../types/class_definition";
 
export class MethodCallChain {
  public runSyntax(
    node: ExpressionNode,
    scope: CurrentScope,
    filename: string,
    targetType?: AbstractType): AbstractType | undefined {
 
    const helper = new ObjectOriented(scope);
    const children = node.getChildren().slice();
 
    const first = children.shift();
    if (first === undefined) {
      throw new Error("MethodCallChain, first child expected");
    }
 
    let context: AbstractType | undefined = this.findTop(first, scope, targetType, filename);
    if (first.get() instanceof Expressions.MethodCall) {
      children.unshift(first);
    }
 
    while (children.length > 0) {
      const current = children.shift();
      if (current === undefined) {
        break;
      }
 
      if (current instanceof ExpressionNode && current.get() instanceof Expressions.MethodCall) {
        // for built-in methods set className to undefined
        const className = context instanceof ObjectReferenceType ? context.getIdentifierName() : undefined;
        const methodToken = current.findDirectExpression(Expressions.MethodName)?.getFirstToken();
        const methodName = methodToken?.getStr();
        const def = scope.findObjectDefinition(className);
        // eslint-disable-next-line prefer-const
        let {method, def: foundDef} = helper.searchMethodName(def, methodName);
        if (method === undefined && current === first) {
          method = new BuiltIn().searchBuiltin(methodName?.toUpperCase());
          if (method) {
            scope.addReference(methodToken, method, ReferenceType.BuiltinMethodReference, filename);
          }
        } else {
          const extra: IReferenceExtras = {
            ooName: foundDef?.getName(),
            ooType: foundDef instanceof ClassDefinition ? "CLAS" : "INTF"};
          scope.addReference(methodToken, method, ReferenceType.MethodReference, filename, extra);
        }
        if (methodName?.includes("~")) {
          const name = methodName.split("~")[0];
          const idef = scope.findInterfaceDefinition(name);
          if (idef) {
            scope.addReference(methodToken, idef, ReferenceType.ObjectOrientedReference, filename);
          }
        }
 
        if (method === undefined && methodName?.toUpperCase() === "CONSTRUCTOR") {
          context = undefined; // todo, this is a workaround, constructors always exists
        } else if (method === undefined && !(context instanceof VoidType)) {
          throw new Error("Method \"" + methodName + "\" not found, methodCallChain");
        } else if (method) {
          const ret = method.getParameters().getReturning()?.getType();
          context = ret;
        }
 
        const param = current.findDirectExpression(Expressions.MethodCallParam);
        if (param && method) {
          new MethodCallParam().runSyntax(param, scope, method, filename);
        } else if (param && context instanceof VoidType) {
          new MethodCallParam().runSyntax(param, scope, context, filename);
        }
      } else if (current instanceof ExpressionNode && current.get() instanceof Expressions.ComponentName) {
        context = new ComponentName().runSyntax(context, current);
      } else if (current instanceof ExpressionNode && current.get() instanceof Expressions.AttributeName) {
        context = new AttributeName().runSyntax(context, current, scope, filename);
      }
    }
 
    return context;
  }
 
//////////////////////////////////////
 
  private findTop(first: INode, scope: CurrentScope, targetType: AbstractType | undefined, filename: string): AbstractType | undefined {
    if (first.get() instanceof Expressions.ClassName) {
      const token = first.getFirstToken();
      const className = token.getStr();
      const classDefinition = scope.findObjectDefinition(className);
      if (classDefinition === undefined && scope.getDDIC().inErrorNamespace(className) === false) {
        const extra: IReferenceExtras = {ooName: className, ooType: "Void"};
        scope.addReference(token, undefined, ReferenceType.ObjectOrientedVoidReference, filename, extra);
        return new VoidType(className);
      } else if (classDefinition === undefined) {
        throw new Error("Class " + className + " not found");
      }
      scope.addReference(first.getFirstToken(), classDefinition, ReferenceType.ObjectOrientedReference, filename);
      return new ObjectReferenceType(classDefinition);
    } else if (first instanceof ExpressionNode && first.get() instanceof Expressions.FieldChain) {
      return new FieldChain().runSyntax(first, scope, filename, ReferenceType.DataReadReference);
    } else if (first instanceof ExpressionNode && first.get() instanceof Expressions.NewObject) {
      return new NewObject().runSyntax(first, scope, targetType, filename);
    } else if (first instanceof ExpressionNode && first.get() instanceof Expressions.Cast) {
      return new Cast().runSyntax(first, scope, targetType, filename);
    } else {
      const meType = scope.findVariable("me")?.getType();
      if (meType) {
        return meType;
      }
    }
    return undefined;
  }
 
}