Package org.mozilla.javascript.ast

## Class ErrorCollector

- java.lang.Object
- - org.mozilla.javascript.ast.ErrorCollector

- All Implemented Interfaces:
    `IdeErrorReporter`, `ErrorReporter`

      public class ErrorCollector
      extends java.lang.Object
      implements IdeErrorReporter

  An error reporter that gathers the errors and warnings for later display. This a useful `ErrorReporter` when the `CompilerEnvirons` is set to ide-mode (for IDEs).

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `ErrorCollector()` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `error​(java.lang.String message, java.lang.String sourceName, int fileOffset, int length)` | Report an error.
    `void` | `error​(java.lang.String message, java.lang.String sourceName, int line, java.lang.String lineSource, int lineOffset)` | This is not called during AST generation.
    `java.util.List<ParseProblem>` | `getErrors()` | Returns the list of errors and warnings produced during parsing.
    `EvaluatorException` | `runtimeError​(java.lang.String message, java.lang.String sourceName, int line, java.lang.String lineSource, int lineOffset)` | Creates an EvaluatorException that may be thrown.
    `java.lang.String` | `toString()` |
    `void` | `warning​(java.lang.String message, java.lang.String sourceName, int offset, int length)` | Report a warning.
    `void` | `warning​(java.lang.String message, java.lang.String sourceName, int line, java.lang.String lineSource, int lineOffset)` | This is not called during AST generation.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### ErrorCollector

          public ErrorCollector()

  - ### Method Detail

    - #### warning

          public void warning​(java.lang.String message,
                              java.lang.String sourceName,
                              int line,
                              java.lang.String lineSource,
                              int lineOffset)

      This is not called during AST generation. `warning(String,String,int,int)` is used instead.
      Specified by:
        `warning` in interface `ErrorReporter`
      Parameters:
        `message` - a String describing the warning
        `sourceName` - a String describing the JavaScript source where the warning occured; typically a filename or URL
        `line` - the line number associated with the warning
        `lineSource` - the text of the line (may be null)
        `lineOffset` - the offset into lineSource where problem was detected
      Throws:
        `java.lang.UnsupportedOperationException`

    - #### warning

          public void warning​(java.lang.String message,
                              java.lang.String sourceName,
                              int offset,
                              int length)

      Report a warning.

      The implementing class may choose to ignore the warning if it desires.

      Specified by:
        `warning` in interface `IdeErrorReporter`
      Parameters:
        `message` - a `String` describing the warning
        `sourceName` - a `String` describing the JavaScript source where the warning occured; typically a filename or URL
        `offset` - the warning's 0-indexed char position in the input stream
        `length` - the length of the region contributing to the warning

    - #### error

          public void error​(java.lang.String message,
                            java.lang.String sourceName,
                            int line,
                            java.lang.String lineSource,
                            int lineOffset)

      This is not called during AST generation. `warning(String,String,int,int)` is used instead.
      Specified by:
        `error` in interface `ErrorReporter`
      Parameters:
        `message` - a String describing the error
        `sourceName` - a String describing the JavaScript source where the error occured; typically a filename or URL
        `line` - the line number associated with the error
        `lineSource` - the text of the line (may be null)
        `lineOffset` - the offset into lineSource where problem was detected
      Throws:
        `java.lang.UnsupportedOperationException`

    - #### error

          public void error​(java.lang.String message,
                            java.lang.String sourceName,
                            int fileOffset,
                            int length)

      Report an error.

      The implementing class is free to throw an exception if it desires.

      If execution has not yet begun, the JavaScript engine is free to find additional errors rather than terminating the translation. It will not execute a script that had errors, however.

      Specified by:
        `error` in interface `IdeErrorReporter`
      Parameters:
        `message` - a String describing the error
        `sourceName` - a String describing the JavaScript source where the error occured; typically a filename or URL
        `fileOffset` - 0-indexed char position of the error in the input stream
        `length` - the length of the region contributing to the error

    - #### runtimeError

          public EvaluatorException runtimeError​(java.lang.String message,
                                                 java.lang.String sourceName,
                                                 int line,
                                                 java.lang.String lineSource,
                                                 int lineOffset)

      Creates an EvaluatorException that may be thrown.

      runtimeErrors, unlike errors, will always terminate the current script.

      Specified by:
        `runtimeError` in interface `ErrorReporter`
      Parameters:
        `message` - a String describing the error
        `sourceName` - a String describing the JavaScript source where the error occured; typically a filename or URL
        `line` - the line number associated with the error
        `lineSource` - the text of the line (may be null)
        `lineOffset` - the offset into lineSource where problem was detected
      Returns:
        an EvaluatorException that will be thrown.

    - #### getErrors

          public java.util.List<ParseProblem> getErrors()

      Returns the list of errors and warnings produced during parsing.

    - #### toString

          public java.lang.String toString()

      Overrides:
        `toString` in class `java.lang.Object`