private static appendDiagnosticsFromProblemTokens()

in src/language/semantics/xsltTokenDiagnostics.ts [1891:2007]
117 lines of code
31 McCabe index (conditional complexity)

  private static appendDiagnosticsFromProblemTokens(
    variableRefDiagnostics: vscode.Diagnostic[],
    tokens: BaseToken[]
  ): vscode.Diagnostic[] {
    tokens.forEach((token) => {
      let line = token.line
      let endChar = token.startCharacter + token.length
      let tokenValue = token.value
      let msg: string
      let errCode = DiagnosticCode.none
      let diagnosticMetadata: vscode.DiagnosticTag[] = []
      let severity = vscode.DiagnosticSeverity.Error
      switch (token.error) {
        case ErrorType.AxisName:
          msg = `XPath: Invalid axis name: '${tokenValue}`
          break
        case ErrorType.BracketNesting:
          let matchingChar: any =
            XsltTokenDiagnostics.getMatchingSymbol(tokenValue)
          msg =
            matchingChar.length === 0
              ? `XPath: No match found for '${tokenValue}'`
              : `'${tokenValue}' has no matching '${matchingChar}'`
          diagnosticMetadata = [vscode.DiagnosticTag.Unnecessary]
          break
        case ErrorType.ElementNesting:
          msg = `XML: Start tag '${tokenValue}' has no matching close tag`
          break
        case ErrorType.ExpectedElseAfterThen:
          msg = `XML: Expected 'else' but found '${tokenValue}'`
          break
        case ErrorType.ExpectedDollarAfterComma:
          msg = `XML: Expected '$' but found '${tokenValue}'`
          break
        case ErrorType.EntityName:
          msg = `XML: Invalid entity name '${tokenValue}'`
          break
        case ErrorType.XPathKeyword:
          msg = `XPath: Found: '${tokenValue}' expected keyword or operator`
          break
        case ErrorType.DuplicateParameterName:
          msg = `XSLT: Duplicate parameter name: '${tokenValue}'`
          break
        case ErrorType.XSLTKeyUnresolved:
          msg = `XSLT: xsl:key declaration with name '${tokenValue}' not found`
          break
        case ErrorType.AccumulatorNameUnresolved:
          msg = `XSLT: xsl:accumulator with name '${tokenValue}' not found`
          break
        case ErrorType.XPathUnexpected:
          msg = `XPath: Expression context - unexpected token here: ${tokenValue} `
          break
        case ErrorType.XPathFunctionUnexpected:
          msg = `XPath: Unexpected function after expression: '${tokenValue}()' `
          break
        case ErrorType.XPathName:
          msg = `XPath: Invalid name: '${tokenValue}'`
          break
        case ErrorType.XPathOperatorUnexpected:
          msg = `XPath: Operator unexpected at this position: '${tokenValue}'`
          break
        case ErrorType.XPathAwaiting:
          msg = `XPath: Expected expression following: '${tokenValue}'`
          break
        case ErrorType.XPathStringLiteral:
          msg = `String literal not terminated properly: ${tokenValue}`
          break
        case ErrorType.XPathFunction:
          let parts = tokenValue.split('#')
          msg = `XPath: Function: '${parts[0]}' with ${parts[1]} arguments not found`
          break
        case ErrorType.XPathTypeName:
          msg = `XPath: Invalid type: '${tokenValue}'`
          break
        case ErrorType.XPathFunctionNamespace:
          let partsNs = tokenValue.split('#')
          msg = `XPath: Undeclared prefix in function: '${partsNs[0]}'`
          break
        case ErrorType.XPathExpectedComplex:
          const expected = tokenValue === ':=' ? 'in' : ':='
          msg = `XPath: '${tokenValue}' is invalid here, expected  '${expected}'`
          break
        case ErrorType.XPathPrefix:
          msg = `XPath: Undeclared prefix in name: '${tokenValue}'`
          break
        case ErrorType.DuplicateVarName:
          msg = `XSLT: Duplicate global variable/parameter name: '${tokenValue}'`
          break
        case ErrorType.DuplicateFnName:
          msg = `XSLT: Duplicate function name and arity: '${tokenValue}'`
          break
        case ErrorType.DuplicateTemplateName:
          msg = `XSLT: Duplicate xsl:template name '${tokenValue}'`
          break
        case ErrorType.DuplicateAccumulatorName:
          msg = `XSLT: Duplicate xsl:accumulator name '${tokenValue}'`
          break
        default:
          msg = 'Unexepected Error'
          break
      }
      if (token.startCharacter > -1 && endChar > -1) {
        variableRefDiagnostics.push({
          code: errCode,
          message: msg,
          range: new vscode.Range(
            new vscode.Position(line, token.startCharacter),
            new vscode.Position(line, endChar)
          ),
          severity: severity,
          tags: diagnosticMetadata,
          source: '',
        })
      }
    })
    return variableRefDiagnostics
  }