com.google.debugging.sourcemap

Interface SourceMapGenerator

All Known Implementing Classes:

SourceMapGeneratorV3

public interface SourceMapGenerator

Collects information mapping the generated (compiled) source back to its original source for debugging purposes

Author:

[email protected] (John Lenz)

Method Summary

Methods

Modifier and Type	Method and Description
void	addMapping(String sourceName, String symbolName, FilePosition sourceStartPosition, FilePosition outputStartPosition, FilePosition outputEndPosition) Adds a mapping for the given node.
void	appendIndexMapTo(Appendable out, String name, List<SourceMapSection> sections) Appends the index source map to the given buffer.
void	appendTo(Appendable out, String name) Appends the source map to the given buffer.
void	reset() Resets the source map for reuse.
void	setStartingPosition(int offsetLine, int offsetIndex) Sets the source code that exists in the buffer for which the generated code is being generated.
void	setWrapperPrefix(String prefix) Sets the prefix used for wrapping the generated source file before it is written.
void	validate(boolean validate) Whether to perform additional validation on the source map.

Method Detail

appendTo

void appendTo(Appendable out,
            String name)
              throws IOException

Appends the source map to the given buffer.

Parameters:

out - The stream to which the map will be appended.

name - The name of the generated source file that this source map represents.

Throws:

IOException

appendIndexMapTo

void appendIndexMapTo(Appendable out,
                    String name,
                    List<SourceMapSection> sections)
                      throws IOException

Appends the index source map to the given buffer.

Parameters:

out - The stream to which the map will be appended.

name - The name of the generated source file that this source map represents.

sections - An ordered list of map sections to include in the index.

Throws:

IOException

reset

void reset()

Resets the source map for reuse. A reset needs to be called between each generated output file.

addMapping

void addMapping(String sourceName,
              @Nullable
              String symbolName,
              FilePosition sourceStartPosition,
              FilePosition outputStartPosition,
              FilePosition outputEndPosition)

Adds a mapping for the given node. Mappings must be added in order.

Parameters:

sourceName - The file name to use in the generate source map to represent this source.

symbolName - The symbol name associated with this position in the source map.

sourceStartPosition - The starting position in the original source for represented range outputStartPosition to outputEndPosition in the generated file.

outputStartPosition - The position on the starting line

outputEndPosition - The position on the ending line.

setWrapperPrefix

void setWrapperPrefix(String prefix)

Sets the prefix used for wrapping the generated source file before it is written. This ensures that the source map is adjusted for the change in character offsets.

Parameters:

prefix - The prefix that is added before the generated source code.

setStartingPosition

void setStartingPosition(int offsetLine,
                       int offsetIndex)

Sets the source code that exists in the buffer for which the generated code is being generated. This ensures that the source map accurately reflects the fact that the source is being appended to an existing buffer and as such, does not start at line 0, position 0 but rather some other line and position.

Parameters:

offsetLine - The index of the current line being printed.

offsetIndex - The column index of the current character being printed.

validate

void validate(boolean validate)

Whether to perform additional validation on the source map.

Parameters:

validate -