org.mvel.util
Class ParseTools

java.lang.Object
  org.mvel.util.ParseTools

public class ParseTools
extends java.lang.Object

This class contains much of the actual parsing code used by the core parser.

Field Summary

static java.lang.Object[]	EMPTY_OBJ_ARR
static boolean	JDK_14_COMPATIBILITY
static MathProcessor	MATH_PROCESSOR

Constructor Summary

ParseTools()

Method Summary

static int	balancedCapture(char[] chars, int start, char type) This is an important aspect of the core parser tools.
static int[]	balancedCaptureWithLineAccounting(char[] chars, int start, char type)
static java.lang.Class	boxPrimitive(java.lang.Class cls)
static java.lang.String[]	captureContructorAndResidual(char[] cs)
static java.lang.String[]	captureContructorAndResidual(java.lang.String token)
static int	captureStringLiteral(char type, char[] expr, int cursor, int length)
static void	checkNameSafety(java.lang.String name)
static boolean	containsCheck(java.lang.Object compareTo, java.lang.Object compareTest)
static java.lang.Class	createClass(java.lang.String className)
static java.lang.Class	createClassSafe(java.lang.String className)
static int	createClassSignatureHash(java.lang.Class declaring, java.lang.Class[] sig)
static char[]	createShortFormOperativeAssignment(java.lang.String name, char[] statement, int operation)
static boolean	debug(java.lang.String str)
static boolean	debug(java.lang.Throwable t)
static java.lang.reflect.Method	determineActualTargetMethod(java.lang.reflect.Method method)
static java.lang.Object	doOperations(java.lang.Object val1, int operation, java.lang.Object val2)
static VariableResolverFactory	finalLocalVariableFactory(VariableResolverFactory factory)
static java.lang.Class	findClass(VariableResolverFactory factory, java.lang.String name)
static ClassImportResolverFactory	findClassImportResolverFactory(VariableResolverFactory factory)
static StaticMethodImportResolverFactory	findStaticMethodImportResolverFactory(VariableResolverFactory factory)
static java.lang.reflect.Method	getBestCandidate(java.lang.Class[] arguments, java.lang.String method, java.lang.reflect.Method[] methods)
static java.lang.reflect.Method	getBestCandidate(java.lang.Object[] arguments, java.lang.String method, java.lang.reflect.Method[] methods)
static java.lang.reflect.Constructor	getBestConstructorCanadidate(java.lang.Object[] arguments, java.lang.Class cls)
static java.lang.reflect.Constructor[]	getConstructors(java.lang.Class cls)
static java.io.FileWriter	getDebugFileWriter()
static java.lang.reflect.Method	getExactMatch(java.lang.String name, java.lang.Class[] args, java.lang.Class returnType, java.lang.Class cls)
static java.lang.String	getSimpleClassName(java.lang.Class cls) REMOVE THIS WITH JDK1.4 COMPATIBILITY! COMPENSATES FOR LACK OF getSimpleName IN java.lang.Class -- DIE 1.4!
static java.lang.reflect.Method	getWidenedTarget(java.lang.reflect.Method method)
static char	handleEscapeSequence(char escapedChar)
static java.lang.Object	handleParserEgress(java.lang.Object result, boolean returnBigDecimal)
static java.lang.String	handleStringEscapes(char[] input)
static java.lang.Object	increment(java.lang.Object o)
static boolean	isNumericallyCoercible(java.lang.Class target, java.lang.Class parm)
static boolean	isPrimitiveWrapper(java.lang.Class clazz)
static java.io.Serializable	optimizeTree(CompiledExpression compiled)
static java.lang.String[]	parseMethodOrConstructor(char[] parm)
static java.lang.String[]	parseParameterList(char[] parm, int offset, int length)
static java.util.Map<java.lang.String,java.lang.String>	parseParameters(char[] parms)
static java.lang.String	repeatChar(char c, int times)
static int	resolveType(java.lang.Class cls)
static java.io.Serializable	subCompileExpression(char[] expression)
static java.io.Serializable	subCompileExpression(java.lang.String expression)
static char[]	subset(char[] array, int start)
static char[]	subset(char[] array, int start, int length)
static java.lang.Class	unboxPrimitive(java.lang.Class cls)
static java.lang.Object	valueOnly(java.lang.Object o)

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_OBJ_ARR

public static final java.lang.Object[] EMPTY_OBJ_ARR

MATH_PROCESSOR

public static final MathProcessor MATH_PROCESSOR

JDK_14_COMPATIBILITY

public static final boolean JDK_14_COMPATIBILITY

Constructor Detail

ParseTools

public ParseTools()

Method Detail

parseMethodOrConstructor

public static java.lang.String[] parseMethodOrConstructor(char[] parm)

parseParameterList

public static java.lang.String[] parseParameterList(char[] parm,
                                                    int offset,
                                                    int length)

getBestCandidate

public static java.lang.reflect.Method getBestCandidate(java.lang.Object[] arguments,
                                                        java.lang.String method,
                                                        java.lang.reflect.Method[] methods)

getBestCandidate

public static java.lang.reflect.Method getBestCandidate(java.lang.Class[] arguments,
                                                        java.lang.String method,
                                                        java.lang.reflect.Method[] methods)

getExactMatch

public static java.lang.reflect.Method getExactMatch(java.lang.String name,
                                                     java.lang.Class[] args,
                                                     java.lang.Class returnType,
                                                     java.lang.Class cls)

getWidenedTarget

public static java.lang.reflect.Method getWidenedTarget(java.lang.reflect.Method method)

getBestConstructorCanadidate

public static java.lang.reflect.Constructor getBestConstructorCanadidate(java.lang.Object[] arguments,
                                                                         java.lang.Class cls)

createClassSafe

public static java.lang.Class createClassSafe(java.lang.String className)

createClass

public static java.lang.Class createClass(java.lang.String className)
                                   throws java.lang.ClassNotFoundException

Throws:

java.lang.ClassNotFoundException

getConstructors

public static java.lang.reflect.Constructor[] getConstructors(java.lang.Class cls)

captureContructorAndResidual

public static java.lang.String[] captureContructorAndResidual(java.lang.String token)

captureContructorAndResidual

public static java.lang.String[] captureContructorAndResidual(char[] cs)

boxPrimitive

public static java.lang.Class boxPrimitive(java.lang.Class cls)

unboxPrimitive

public static java.lang.Class unboxPrimitive(java.lang.Class cls)

containsCheck

public static boolean containsCheck(java.lang.Object compareTo,
                                    java.lang.Object compareTest)

createClassSignatureHash

public static int createClassSignatureHash(java.lang.Class declaring,
                                           java.lang.Class[] sig)

handleEscapeSequence

public static char handleEscapeSequence(char escapedChar)

createShortFormOperativeAssignment

public static char[] createShortFormOperativeAssignment(java.lang.String name,
                                                        char[] statement,
                                                        int operation)

finalLocalVariableFactory

public static VariableResolverFactory finalLocalVariableFactory(VariableResolverFactory factory)

findClassImportResolverFactory

public static ClassImportResolverFactory findClassImportResolverFactory(VariableResolverFactory factory)

findStaticMethodImportResolverFactory

public static StaticMethodImportResolverFactory findStaticMethodImportResolverFactory(VariableResolverFactory factory)

findClass

public static java.lang.Class findClass(VariableResolverFactory factory,
                                        java.lang.String name)
                                 throws java.lang.ClassNotFoundException

Throws:

java.lang.ClassNotFoundException

debug

public static boolean debug(java.lang.String str)

debug

public static boolean debug(java.lang.Throwable t)

subset

public static char[] subset(char[] array,
                            int start,
                            int length)

subset

public static char[] subset(char[] array,
                            int start)

resolveType

public static int resolveType(java.lang.Class cls)

valueOnly

public static java.lang.Object valueOnly(java.lang.Object o)

isNumericallyCoercible

public static boolean isNumericallyCoercible(java.lang.Class target,
                                             java.lang.Class parm)

handleParserEgress

public static java.lang.Object handleParserEgress(java.lang.Object result,
                                                  boolean returnBigDecimal)

determineActualTargetMethod

public static java.lang.reflect.Method determineActualTargetMethod(java.lang.reflect.Method method)

doOperations

public static java.lang.Object doOperations(java.lang.Object val1,
                                            int operation,
                                            java.lang.Object val2)

increment

public static java.lang.Object increment(java.lang.Object o)

parseParameters

public static java.util.Map<java.lang.String,java.lang.String> parseParameters(char[] parms)

balancedCapture

public static int balancedCapture(char[] chars,
                                  int start,
                                  char type)

This is an important aspect of the core parser tools. This method is used throughout the core parser and sub-lexical parsers to capture a balanced capture between opening and terminating tokens such as: ( [ { ' "

For example: ((foo + bar + (bar - foo)) * 20;

If a balanced capture is performed from position 2, we get "(foo + bar + (bar - foo))" back.
If a balanced capture is performed from position 15, we get "(bar - foo)" back.
Etc.

Parameters:

chars -

start -

type -

Returns:

balancedCaptureWithLineAccounting

public static int[] balancedCaptureWithLineAccounting(char[] chars,
                                                      int start,
                                                      char type)

handleStringEscapes

public static java.lang.String handleStringEscapes(char[] input)

captureStringLiteral

public static int captureStringLiteral(char type,
                                       char[] expr,
                                       int cursor,
                                       int length)

getSimpleClassName

public static java.lang.String getSimpleClassName(java.lang.Class cls)

REMOVE THIS WITH JDK1.4 COMPATIBILITY! COMPENSATES FOR LACK OF getSimpleName IN java.lang.Class -- DIE 1.4!

Parameters:

cls - -- class reference

Returns:

Simple name of class

checkNameSafety

public static void checkNameSafety(java.lang.String name)

getDebugFileWriter

public static java.io.FileWriter getDebugFileWriter()
                                             throws java.io.IOException

Throws:

java.io.IOException

isPrimitiveWrapper

public static boolean isPrimitiveWrapper(java.lang.Class clazz)

subCompileExpression

public static java.io.Serializable subCompileExpression(java.lang.String expression)

subCompileExpression

public static java.io.Serializable subCompileExpression(char[] expression)

optimizeTree

public static java.io.Serializable optimizeTree(CompiledExpression compiled)

repeatChar

public static java.lang.String repeatChar(char c,
                                          int times)