Mercurial > hg > truffle
view graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiUtil.java @ 5299:0ebd9cfdc11f
removed @Data annotation
author | Lukas Stadler <lukas.stadler@jku.at> |
---|---|
date | Wed, 25 Apr 2012 13:02:10 +0200 |
parents | cce31bc56c00 |
children | f47c770756e6 |
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/* * Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.max.cri.ci; import static java.lang.reflect.Modifier.*; import java.lang.annotation.*; import java.util.*; import com.oracle.max.cri.ri.*; /** * Miscellaneous collection of utility methods used in the {@code CRI} project. */ public class CiUtil { public static final String NEW_LINE = String.format("%n"); /** * Gets the annotation of a particular type for a formal parameter of a given method. * * @param annotationClass the Class object corresponding to the annotation type * @param parameterIndex the index of a formal parameter of {@code method} * @param method the method for which a parameter annotation is being requested * @return the annotation of type {@code annotationClass} for the formal parameter present, else null * @throws IndexOutOfBoundsException if {@code parameterIndex} does not denote a formal parameter */ public static <T extends Annotation> T getParameterAnnotation(Class<T> annotationClass, int parameterIndex, RiResolvedMethod method) { if (parameterIndex >= 0) { Annotation[][] parameterAnnotations = method.getParameterAnnotations(); for (Annotation a : parameterAnnotations[parameterIndex]) { if (a.annotationType() == annotationClass) { return annotationClass.cast(a); } } } return null; } /** * Extends the functionality of {@link Class#getSimpleName()} to include a non-empty string for anonymous and local * classes. * * @param clazz the class for which the simple name is being requested * @param withEnclosingClass specifies if the returned name should be qualified with the name(s) of the enclosing * class/classes of {@code clazz} (if any). This option is ignored if {@code clazz} denotes an anonymous * or local class. * @return the simple name */ public static String getSimpleName(Class< ? > clazz, boolean withEnclosingClass) { final String simpleName = clazz.getSimpleName(); if (simpleName.length() != 0) { if (withEnclosingClass) { String prefix = ""; Class< ? > enclosingClass = clazz; while ((enclosingClass = enclosingClass.getEnclosingClass()) != null) { prefix = prefix + enclosingClass.getSimpleName() + "."; } return prefix + simpleName; } return simpleName; } // Must be an anonymous or local class final String name = clazz.getName(); int index = name.indexOf('$'); if (index == -1) { return name; } index = name.lastIndexOf('.', index); if (index == -1) { return name; } return name.substring(index + 1); } public static final int K = 1024; public static final int M = 1024 * 1024; public static boolean isOdd(int n) { return (n & 1) == 1; } public static boolean isEven(int n) { return (n & 1) == 0; } /** * Checks whether the specified integer is a power of two. * * @param val the value to check * @return {@code true} if the value is a power of two; {@code false} otherwise */ public static boolean isPowerOf2(int val) { return val != 0 && (val & val - 1) == 0; } /** * Checks whether the specified long is a power of two. * * @param val the value to check * @return {@code true} if the value is a power of two; {@code false} otherwise */ public static boolean isPowerOf2(long val) { return val != 0 && (val & val - 1) == 0; } /** * Computes the log (base 2) of the specified integer, rounding down. (E.g {@code log2(8) = 3}, {@code log2(21) = 4} * ) * * @param val the value * @return the log base 2 of the value */ public static int log2(int val) { assert val > 0 && isPowerOf2(val); return 31 - Integer.numberOfLeadingZeros(val); } /** * Computes the log (base 2) of the specified long, rounding down. (E.g {@code log2(8) = 3}, {@code log2(21) = 4}) * * @param val the value * @return the log base 2 of the value */ public static int log2(long val) { assert val > 0 && isPowerOf2(val); return 63 - Long.numberOfLeadingZeros(val); } public static int align(int size, int align) { assert isPowerOf2(align); return (size + align - 1) & ~(align - 1); } /** * Gets a word with the nth bit set. * * @param n the nth bit to set * @return an integer value with the nth bit set */ public static int nthBit(int n) { return n >= Integer.SIZE ? 0 : 1 << n; } /** * Gets a word with the right-most n bits set. * * @param n the number of right most bits to set * @return an integer value with the right-most n bits set */ public static int rightNBits(int n) { return nthBit(n) - 1; } /** * Converts a given type to its Java programming language name. The following are examples of strings returned by * this method: * * <pre> * qualified == true: * java.lang.Object * int * boolean[][] * qualified == false: * Object * int * boolean[][] * </pre> * * @param riType the type to be converted to a Java name * @param qualified specifies if the package prefix of the type should be included in the returned name * @return the Java name corresponding to {@code riType} */ public static String toJavaName(RiType riType, boolean qualified) { CiKind kind = riType.kind(false); if (kind.isPrimitive() || kind == CiKind.Void) { return kind.javaName; } return internalNameToJava(riType.name(), qualified); } /** * Converts a given type to its Java programming language name. The following are examples of strings returned by * this method: * * <pre> * java.lang.Object * int * boolean[][] * </pre> * * @param riType the type to be converted to a Java name * @return the Java name corresponding to {@code riType} */ public static String toJavaName(RiType riType) { return (riType == null) ? null : internalNameToJava(riType.name(), true); } public static String internalNameToJava(String name, boolean qualified) { switch (name.charAt(0)) { case 'L': { String result = name.substring(1, name.length() - 1).replace('/', '.'); if (!qualified) { final int lastDot = result.lastIndexOf('.'); if (lastDot != -1) { result = result.substring(lastDot + 1); } } return result; } case '[': return internalNameToJava(name.substring(1), qualified) + "[]"; default: if (name.length() != 1) { throw new IllegalArgumentException("Illegal internal name: " + name); } return CiKind.fromPrimitiveOrVoidTypeChar(name.charAt(0)).javaName; } } /** * Gets a string for a given method formatted according to a given format specification. A format specification is * composed of characters that are to be copied verbatim to the result and specifiers that denote an attribute of * the method that is to be copied to the result. A specifier is a single character preceded by a '%' character. The * accepted specifiers and the method attributes they denote are described below: * * <pre> * Specifier | Description | Example(s) * ----------+------------------------------------------------------------------------------------------ * 'R' | Qualified return type | "int" "java.lang.String" * 'r' | Unqualified return type | "int" "String" * 'H' | Qualified holder | "java.util.Map.Entry" * 'h' | Unqualified holder | "Entry" * 'n' | Method name | "add" * 'P' | Qualified parameter types, separated by ', ' | "int, java.lang.String" * 'p' | Unqualified parameter types, separated by ', ' | "int, String" * 'f' | Indicator if method is unresolved, static or virtual | "unresolved" "static" "virtual" * '%' | A '%' character | "%" * </pre> * * @param format a format specification * @param method the method to be formatted * @param kinds if {@code true} then the types in {@code method}'s signature are printed in the * {@linkplain CiKind#jniName JNI} form of their {@linkplain CiKind kind} * @return the result of formatting this method according to {@code format} * @throws IllegalFormatException if an illegal specifier is encountered in {@code format} */ public static String format(String format, RiMethod method) throws IllegalFormatException { final StringBuilder sb = new StringBuilder(); int index = 0; RiSignature sig = null; while (index < format.length()) { final char ch = format.charAt(index++); if (ch == '%') { if (index >= format.length()) { throw new UnknownFormatConversionException("An unquoted '%' character cannot terminate a method format specification"); } final char specifier = format.charAt(index++); boolean qualified = false; switch (specifier) { case 'R': qualified = true; // fall through case 'r': { if (sig == null) { sig = method.signature(); } sb.append(toJavaName(sig.returnType(null), qualified)); break; } case 'H': qualified = true; // fall through case 'h': { sb.append(toJavaName(method.holder(), qualified)); break; } case 'n': { sb.append(method.name()); break; } case 'P': qualified = true; // fall through case 'p': { if (sig == null) { sig = method.signature(); } for (int i = 0; i < sig.argumentCount(false); i++) { if (i != 0) { sb.append(", "); } sb.append(toJavaName(sig.argumentTypeAt(i, null), qualified)); } break; } case 'f': { sb.append(!(method instanceof RiResolvedMethod) ? "unresolved" : isStatic(((RiResolvedMethod) method).accessFlags()) ? "static" : "virtual"); break; } case '%': { sb.append('%'); break; } default: { throw new UnknownFormatConversionException(String.valueOf(specifier)); } } } else { sb.append(ch); } } return sb.toString(); } /** * Gets a string for a given field formatted according to a given format specification. A format specification is * composed of characters that are to be copied verbatim to the result and specifiers that denote an attribute of * the field that is to be copied to the result. A specifier is a single character preceded by a '%' character. The * accepted specifiers and the field attributes they denote are described below: * * <pre> * Specifier | Description | Example(s) * ----------+------------------------------------------------------------------------------------------ * 'T' | Qualified type | "int" "java.lang.String" * 't' | Unqualified type | "int" "String" * 'H' | Qualified holder | "java.util.Map.Entry" * 'h' | Unqualified holder | "Entry" * 'n' | Field name | "age" * 'f' | Indicator if field is unresolved, static or instance | "unresolved" "static" "instance" * '%' | A '%' character | "%" * </pre> * * @param format a format specification * @param field the field to be formatted * @param kinds if {@code true} then {@code field}'s type is printed in the {@linkplain CiKind#jniName JNI} form of * its {@linkplain CiKind kind} * @return the result of formatting this field according to {@code format} * @throws IllegalFormatException if an illegal specifier is encountered in {@code format} */ public static String format(String format, RiField field) throws IllegalFormatException { final StringBuilder sb = new StringBuilder(); int index = 0; RiType type = field.type(); while (index < format.length()) { final char ch = format.charAt(index++); if (ch == '%') { if (index >= format.length()) { throw new UnknownFormatConversionException("An unquoted '%' character cannot terminate a field format specification"); } final char specifier = format.charAt(index++); boolean qualified = false; switch (specifier) { case 'T': qualified = true; // fall through case 't': { sb.append(toJavaName(type, qualified)); break; } case 'H': qualified = true; // fall through case 'h': { sb.append(toJavaName(field.holder(), qualified)); break; } case 'n': { sb.append(field.name()); break; } case 'f': { sb.append(!(field instanceof RiResolvedField) ? "unresolved" : isStatic(((RiResolvedField) field).accessFlags()) ? "static" : "instance"); break; } case '%': { sb.append('%'); break; } default: { throw new UnknownFormatConversionException(String.valueOf(specifier)); } } } else { sb.append(ch); } } return sb.toString(); } /** * Converts a Java source-language class name into the internal form. * * @param className the class name * @return the internal name form of the class name */ public static String toInternalName(String className) { return "L" + className.replace('.', '/') + ";"; } /** * Creates a set that uses reference-equality instead of {@link Object#equals(Object)} when comparing values. * * @param <T> the type of elements in the set * @return a set based on reference-equality */ public static <T> Set<T> newIdentityHashSet() { return Collections.newSetFromMap(new IdentityHashMap<T, Boolean>()); } /** * Prepends the String {@code indentation} to every line in String {@code lines}, including a possibly non-empty * line following the final newline. */ public static String indent(String lines, String indentation) { if (lines.length() == 0) { return lines; } final String newLine = "\n"; if (lines.endsWith(newLine)) { return indentation + (lines.substring(0, lines.length() - 1)).replace(newLine, newLine + indentation) + newLine; } return indentation + lines.replace(newLine, newLine + indentation); } /** * Formats the values in a frame as a tabulated string. * * @param frame * @return the values in {@code frame} as a tabulated string */ public static String tabulateValues(CiFrame frame) { int cols = Math.max(frame.numLocals, Math.max(frame.numStack, frame.numLocks)); assert cols > 0; ArrayList<Object> cells = new ArrayList<>(); cells.add(""); for (int i = 0; i < cols; i++) { cells.add(i); } cols++; if (frame.numLocals != 0) { cells.add("locals:"); cells.addAll(Arrays.asList(frame.values).subList(0, frame.numLocals)); cells.addAll(Collections.nCopies(cols - frame.numLocals - 1, "")); } if (frame.numStack != 0) { cells.add("stack:"); cells.addAll(Arrays.asList(frame.values).subList(frame.numLocals, frame.numLocals + frame.numStack)); cells.addAll(Collections.nCopies(cols - frame.numStack - 1, "")); } if (frame.numLocks != 0) { cells.add("locks:"); cells.addAll(Arrays.asList(frame.values).subList(frame.numLocals + frame.numStack, frame.values.length)); cells.addAll(Collections.nCopies(cols - frame.numLocks - 1, "")); } Object[] cellArray = cells.toArray(); for (int i = 0; i < cellArray.length; i++) { if ((i % cols) != 0) { cellArray[i] = "|" + cellArray[i]; } } return CiUtil.tabulate(cellArray, cols, 1, 1); } /** * Formats a given table as a string. The value of each cell is produced by {@link String#valueOf(Object)}. * * @param cells the cells of the table in row-major order * @param cols the number of columns per row * @param lpad the number of space padding inserted before each formatted cell value * @param rpad the number of space padding inserted after each formatted cell value * @return a string with one line per row and each column left-aligned */ public static String tabulate(Object[] cells, int cols, int lpad, int rpad) { int rows = (cells.length + (cols - 1)) / cols; int[] colWidths = new int[cols]; for (int col = 0; col < cols; col++) { for (int row = 0; row < rows; row++) { int index = col + (row * cols); if (index < cells.length) { Object cell = cells[index]; colWidths[col] = Math.max(colWidths[col], String.valueOf(cell).length()); } } } StringBuilder sb = new StringBuilder(); String nl = NEW_LINE; for (int row = 0; row < rows; row++) { for (int col = 0; col < cols; col++) { int index = col + (row * cols); if (index < cells.length) { for (int i = 0; i < lpad; i++) { sb.append(' '); } Object cell = cells[index]; String s = String.valueOf(cell); int w = s.length(); sb.append(s); while (w < colWidths[col]) { sb.append(' '); w++; } for (int i = 0; i < rpad; i++) { sb.append(' '); } } } sb.append(nl); } return sb.toString(); } /** * Convenient shortcut for calling {@link #appendLocation(StringBuilder, RiMethod, int)} without having to supply a * a {@link StringBuilder} instance and convert the result to a string. */ public static String toLocation(RiResolvedMethod method, int bci) { return appendLocation(new StringBuilder(), method, bci).toString(); } /** * Appends a string representation of a location specified by a given method and bci to a given * {@link StringBuilder}. If a stack trace element with a non-null file name and non-negative line number is * {@linkplain RiMethod#toStackTraceElement(int) available} for the given method, then the string returned is the * {@link StackTraceElement#toString()} value of the stack trace element, suffixed by the bci location. For example: * * <pre> * java.lang.String.valueOf(String.java:2930) [bci: 12] * </pre> * * Otherwise, the string returned is the value of {@code CiUtil.format("%H.%n(%p)"}, suffixed by the bci location. * For example: * * <pre> * java.lang.String.valueOf(int) [bci: 12] * </pre> * * @param sb * @param method * @param bci * @return */ public static StringBuilder appendLocation(StringBuilder sb, RiResolvedMethod method, int bci) { if (method != null) { StackTraceElement ste = method.toStackTraceElement(bci); if (ste.getFileName() != null && ste.getLineNumber() > 0) { sb.append(ste); } else { sb.append(CiUtil.format("%H.%n(%p)", method)); } } else { sb.append("Null method"); } return sb.append(" [bci: ").append(bci).append(']'); } /** * Appends a formatted code position to a {@link StringBuilder}. * * @param sb the {@link StringBuilder} to append to * @param pos the code position to format and append to {@code sb} * @return the value of {@code sb} */ public static StringBuilder append(StringBuilder sb, CiCodePos pos) { appendLocation(sb.append("at "), pos.method, pos.bci); if (pos.caller != null) { sb.append(NEW_LINE); append(sb, pos.caller); } return sb; } /** * Appends a formatted frame to a {@link StringBuilder}. * * @param sb the {@link StringBuilder} to append to * @param frame the frame to format and append to {@code sb} * @return the value of {@code sb} */ public static StringBuilder append(StringBuilder sb, CiFrame frame) { appendLocation(sb.append("at "), frame.method, frame.bci); if (frame.values != null && frame.values.length > 0) { sb.append(NEW_LINE); String table = tabulateValues(frame); String[] rows = table.split(NEW_LINE); for (int i = 0; i < rows.length; i++) { String row = rows[i]; if (!row.trim().isEmpty()) { sb.append(" ").append(row); if (i != rows.length - 1) { sb.append(NEW_LINE); } } } } if (frame.caller() != null) { sb.append(NEW_LINE); append(sb, frame.caller()); } else if (frame.caller != null) { sb.append(NEW_LINE); append(sb, frame.caller); } return sb; } /** * Formats a location present in a register or frame reference map. */ public static class RefMapFormatter { /** * The size of a stack slot. */ public final int slotSize; /** * The register used as the frame pointer. */ public final CiRegister fp; public final CiArchitecture arch; /** * The offset (in bytes) from the slot pointed to by {@link #fp} to the slot corresponding to bit 0 in the frame * reference map. */ public final int refMapToFPOffset; public RefMapFormatter(CiArchitecture arch, int slotSize, CiRegister fp, int refMapToFPOffset) { this.arch = arch; this.slotSize = slotSize; this.fp = fp; this.refMapToFPOffset = refMapToFPOffset; } public String formatStackSlot(int frameRefMapIndex) { int refMapOffset = frameRefMapIndex * slotSize; int fpOffset = refMapOffset + refMapToFPOffset; if (fpOffset >= 0) { return fp + "+" + fpOffset; } return fp.name + fpOffset; } public String formatRegister(int regRefMapIndex) { return arch.registers[regRefMapIndex].toString(); } } /** * Appends a formatted debug info to a {@link StringBuilder}. * * @param sb the {@link StringBuilder} to append to * @param info the debug info to format and append to {@code sb} * @return the value of {@code sb} */ public static StringBuilder append(StringBuilder sb, CiDebugInfo info, RefMapFormatter formatter) { String nl = NEW_LINE; if (info.hasRegisterRefMap()) { sb.append(" reg-ref-map:"); CiBitMap bm = info.registerRefMap; if (formatter != null) { for (int reg = bm.nextSetBit(0); reg >= 0; reg = bm.nextSetBit(reg + 1)) { sb.append(" " + formatter.formatRegister(reg)); } } sb.append(' ').append(bm).append(nl); } if (info.hasStackRefMap()) { sb.append("frame-ref-map:"); CiBitMap bm = info.frameRefMap; if (formatter != null) { for (int i = bm.nextSetBit(0); i >= 0; i = bm.nextSetBit(i + 1)) { sb.append(" " + formatter.formatStackSlot(i)); } } sb.append(' ').append(bm).append(nl); } CiFrame frame = info.frame(); if (frame != null) { append(sb, frame); } else if (info.codePos != null) { append(sb, info.codePos); } return sb; } public static CiKind[] signatureToKinds(RiResolvedMethod method) { CiKind receiver = isStatic(method.accessFlags()) ? null : method.holder().kind(true); return signatureToKinds(method.signature(), receiver); } public static CiKind[] signatureToKinds(RiSignature signature, CiKind receiverKind) { int args = signature.argumentCount(false); CiKind[] result; int i = 0; if (receiverKind != null) { result = new CiKind[args + 1]; result[0] = receiverKind; i = 1; } else { result = new CiKind[args]; } for (int j = 0; j < args; j++) { result[i + j] = signature.argumentKindAt(j, true); } return result; } public static Class< ? >[] signatureToTypes(RiSignature signature, RiResolvedType accessingClass) { int count = signature.argumentCount(false); Class< ? >[] result = new Class< ? >[count]; for (int i = 0; i < result.length; ++i) { result[i] = signature.argumentTypeAt(i, accessingClass).resolve(accessingClass).toJava(); } return result; } }