this.to_ast = function()

in src/parser/WDL/hermes/wdl_parser.js [182:241]

• 60 lines of code
• 24 McCabe index (conditional complexity)

  this.to_ast = function() {
    var name;
    if (this.list == true) {
      if (this.children.length == 0) {
        return new AstList([]);
      }
      var end = this.children.length - 1;
      var list = [];
      for (var i = 0; i < this.children.length; i++) {
        if (this.children[i] instanceof Terminal && this.children[i].id == this.listSeparator)
          continue;
        list.push(this.children[i].to_ast());
      }
      return new AstList(list);
    }
    else if (this.isExpr == true) {
      if (this.astTransform instanceof AstTransformSubstitution) {
        return this.children[this.astTransform.idx].to_ast();
      }
      else if (this.astTransform instanceof AstTransformNodeCreator) {
        var parameters = {}
        for (name in this.astTransform.parameters) {
          var idx = this.astTransform.parameters[name];
          var child = null;
          if (idx == '$') {
            child = this.children[0];
          } else if (this.children[0] instanceof ParseTree && this.children[0].isNud && !this.children[0].isPrefix && !this.isExprNud && !this.isInfix) {
            if (idx < this.children[0].nudMorphemeCount) {
              child = this.children[0].children[idx]
            } else {
              var index = idx - this.children[0].nudMorphemeCount + 1
              child = this.children[index]
            }
          } else if (this.children.length == 1 && !(this.children[0] instanceof ParseTree) && !(this.children[0] instanceof Array)) {
            return this.children[0];
          } else {
            child = this.children[idx];
          }
          parameters[name] = child.to_ast()
        }
        return new Ast(this.astTransform.name, parameters);
      }
    }
    else {
      if (this.astTransform instanceof AstTransformSubstitution) {
        return this.children[this.astTransform.idx].to_ast()
      } else if (this.astTransform instanceof AstTransformNodeCreator) {
        var parameters = {};
        for (name in this.astTransform.parameters) {
          parameters[name] = this.children[this.astTransform.parameters[name]].to_ast();
        }
        return new Ast(this.astTransform.name, parameters);
        return x;
      } else if (this.children.length) {
        return this.children[0].to_ast();
      } else {
        return null;
      }
    }
  }