diff options
| -rw-r--r-- | bridge/src/org/aspectj/bridge/SourceLocation.java | 296 |
1 files changed, 162 insertions, 134 deletions
diff --git a/bridge/src/org/aspectj/bridge/SourceLocation.java b/bridge/src/org/aspectj/bridge/SourceLocation.java index e68a45f89..490eb65fb 100644 --- a/bridge/src/org/aspectj/bridge/SourceLocation.java +++ b/bridge/src/org/aspectj/bridge/SourceLocation.java @@ -13,159 +13,187 @@ package org.aspectj.bridge; - import java.io.File; import org.aspectj.util.LangUtil; /** - * Immutable source location. - * This guarantees that the source file is not null - * and that the numeric values are positive and line <= endLine. + * Immutable source location. This guarantees that the source file is not null and that the numeric values are positive and line <= + * endLine. + * * @see org.aspectj.lang.reflect.SourceLocation * @see org.aspectj.compiler.base.parser.SourceInfo * @see org.aspectj.tools.ide.SourceLine * @see org.aspectj.testing.harness.ErrorLine */ public class SourceLocation implements ISourceLocation, java.io.Serializable { - + private static final long serialVersionUID = -5434765814401009794L; + private transient int cachedHashcode = -1; + /** used when SourceLocation is not available */ - public static final ISourceLocation UNKNOWN - = new SourceLocation(ISourceLocation.NO_FILE, 0, 0, 0); - - /** @throws IllegalArgumentException if the input would not be a valid line */ - public static final void validLine(int line) { - if (line < 0) { - throw new IllegalArgumentException("negative line: " + line); - } else if (line > ISourceLocation.MAX_LINE) { - throw new IllegalArgumentException("line too large: " + line); - } - } - - /** @throws IllegalArgumentException if the input would not be a valid column */ - public static final void validColumn(int column) { - if (column < 0) { - throw new IllegalArgumentException("negative column: " + column); - } else if (column > ISourceLocation.MAX_COLUMN) { - throw new IllegalArgumentException("column too large: " + column); - } - } - - private final File sourceFile; - private final int startLine; - private final int column; - private final int endLine; - private int offset; - private final String context; - private boolean noColumn; - private String sourceFileName; - - /** - * Same as SourceLocation(file, line, line, 0), - * except that column is not rendered during toString() - */ - public SourceLocation(File file, int line) { - this(file, line, line, NO_COLUMN); - } - - /** same as SourceLocation(file, line, endLine, ISourceLocation.NO_COLUMN) */ - public SourceLocation(File file, int line, int endLine) { - this(file, line, endLine, ISourceLocation.NO_COLUMN); - } - - /** - * @param file File of the source; if null, use ISourceLocation.NO_FILE, not null - * @param line int starting line of the location - positive number - * @param endLine int ending line of the location - <= starting line - * @param column int character position of starting location - positive number - */ - public SourceLocation(File file, int line, int endLine, int column) { - this(file, line, endLine, column, (String) null); - } - - public SourceLocation(File file, int line, int endLine, int column, String context) { - if (column == NO_COLUMN) { - column = 0; - noColumn = true; - } - if (null == file) { - file = ISourceLocation.NO_FILE; - } - validLine(line); - validLine(endLine); - LangUtil.throwIaxIfFalse(line <= endLine , line + " > " + endLine); - LangUtil.throwIaxIfFalse(column >= 0, "negative column: " + column); - this.sourceFile = file; - this.startLine = line; - this.column = column; - this.endLine = endLine; - this.context = context; - } - - public SourceLocation(File file, int line, int endLine, int column, String context, String sourceFileName) { - this(file,line,endLine,column,context); - this.sourceFileName = sourceFileName; - } - - public File getSourceFile() { - return sourceFile; - } - public int getLine() { - return startLine; - } - - /** - * @return int actual column or 0 if not available per constructor treatment - * of ISourceLocation.NO_COLUMN - */ - public int getColumn() { - return column; - } - - public int getEndLine() { - return endLine; - } - - /** @return null String or application-specific context */ - public String getContext() { - return context; - } - - /** @return String {context\n}{file:}line{:column} */ - public String toString() { - StringBuffer sb = new StringBuffer(); - if (null != context) { - sb.append(context); - sb.append(LangUtil.EOL); - } - if (sourceFile != ISourceLocation.NO_FILE) { - sb.append(sourceFile.getPath()); - } - if (startLine > 0) { - sb.append(":"); - sb.append(startLine); //"" + startLine + "-" + endLine); - } - if (!noColumn) { - sb.append(":" + column); - } - if (offset>=0) { - sb.append("::"+offset); - } - return sb.toString(); - } - - // XXX Ctors for this type should know about an offset, rather than - // it being set through these methods - but there are just too many - // ctors at the moment! It needs sorting out. - public int getOffset() { return offset;} - public void setOffset(int i) { offset=i;} + public static final ISourceLocation UNKNOWN = new SourceLocation(ISourceLocation.NO_FILE, 0, 0, 0); + + /** @throws IllegalArgumentException if the input would not be a valid line */ + public static final void validLine(int line) { + if (line < 0) { + throw new IllegalArgumentException("negative line: " + line); + } else if (line > ISourceLocation.MAX_LINE) { + throw new IllegalArgumentException("line too large: " + line); + } + } + + /** @throws IllegalArgumentException if the input would not be a valid column */ + public static final void validColumn(int column) { + if (column < 0) { + throw new IllegalArgumentException("negative column: " + column); + } else if (column > ISourceLocation.MAX_COLUMN) { + throw new IllegalArgumentException("column too large: " + column); + } + } + + private final File sourceFile; + private final int startLine; + private final int column; + private final int endLine; + private int offset; + private final String context; + private boolean noColumn; + private String sourceFileName; + + /** + * Same as SourceLocation(file, line, line, 0), except that column is not rendered during toString() + */ + public SourceLocation(File file, int line) { + this(file, line, line, NO_COLUMN); + } + + /** same as SourceLocation(file, line, endLine, ISourceLocation.NO_COLUMN) */ + public SourceLocation(File file, int line, int endLine) { + this(file, line, endLine, ISourceLocation.NO_COLUMN); + } + + /** + * @param file File of the source; if null, use ISourceLocation.NO_FILE, not null + * @param line int starting line of the location - positive number + * @param endLine int ending line of the location - <= starting line + * @param column int character position of starting location - positive number + */ + public SourceLocation(File file, int line, int endLine, int column) { + this(file, line, endLine, column, (String) null); + } + + public SourceLocation(File file, int line, int endLine, int column, String context) { + if (column == NO_COLUMN) { + column = 0; + noColumn = true; + } + if (null == file) { + file = ISourceLocation.NO_FILE; + } + validLine(line); + validLine(endLine); + LangUtil.throwIaxIfFalse(line <= endLine, line + " > " + endLine); + LangUtil.throwIaxIfFalse(column >= 0, "negative column: " + column); + this.sourceFile = file; + this.startLine = line; + this.column = column; + this.endLine = endLine; + this.context = context; + } + + public SourceLocation(File file, int line, int endLine, int column, String context, String sourceFileName) { + this(file, line, endLine, column, context); + this.sourceFileName = sourceFileName; + } + + public File getSourceFile() { + return sourceFile; + } + + public int getLine() { + return startLine; + } + + /** + * @return int actual column or 0 if not available per constructor treatment of ISourceLocation.NO_COLUMN + */ + public int getColumn() { + return column; + } + + public int getEndLine() { + return endLine; + } + + /** @return null String or application-specific context */ + public String getContext() { + return context; + } + + /** @return String {context\n}{file:}line{:column} */ + public String toString() { + StringBuffer sb = new StringBuffer(); + if (null != context) { + sb.append(context); + sb.append(LangUtil.EOL); + } + if (sourceFile != ISourceLocation.NO_FILE) { + sb.append(sourceFile.getPath()); + } + if (startLine > 0) { + sb.append(":"); + sb.append(startLine); // "" + startLine + "-" + endLine); + } + if (!noColumn) { + sb.append(":" + column); + } + if (offset >= 0) { + sb.append("::" + offset); + } + return sb.toString(); + } + + // XXX Ctors for this type should know about an offset, rather than + // it being set through these methods - but there are just too many + // ctors at the moment! It needs sorting out. + public int getOffset() { + return offset; + } + + public void setOffset(int i) { + cachedHashcode = -1; + offset = i; + } public String getSourceFileName() { return sourceFileName; } + public boolean equals(Object obj) { + if (!(obj instanceof SourceLocation)) { + return false; + } + SourceLocation o = (SourceLocation) obj; + return startLine == o.startLine && column == o.column && endLine == o.endLine && offset == o.offset + && (sourceFile == null ? o.sourceFile == null : sourceFile.equals(o.sourceFile)) + && (context == null ? o.context == null : context.equals(o.context)) && noColumn == o.noColumn + && (sourceFileName == null ? o.sourceFileName == null : sourceFileName.equals(o.sourceFileName)); + } + public int hashCode() { + if (cachedHashcode == -1) { + cachedHashcode = (sourceFile == null ? 0 : sourceFile.hashCode()); + cachedHashcode = cachedHashcode * 37 + startLine; + cachedHashcode = cachedHashcode * 37 + column; + cachedHashcode = cachedHashcode * 37 + endLine; + cachedHashcode = cachedHashcode * 37 + offset; + cachedHashcode = cachedHashcode * 37 + (context == null ? 0 : context.hashCode()); + cachedHashcode = cachedHashcode * 37 + (noColumn ? 0 : 1); + cachedHashcode = cachedHashcode * 37 + (sourceFileName == null ? 0 : sourceFileName.hashCode()); + } + return cachedHashcode; + } } |