Package com.tonic.analysis.execution.invoke

Class StringConcatHandler

java.lang.Object

com.tonic.analysis.execution.invoke.StringConcatHandler

public final class StringConcatHandler
extends Object

Interpreter-side implementation of StringConcatFactory call sites, expanding recipe strings into concatenated results.

Field Summary

Fields

Modifier and Type	Field	Description
static char	TAG_ARG
static char	TAG_CONST

Constructor Summary

Constructors

Constructor	Description
StringConcatHandler()

Method Summary

Modifier and Type	Method	Description
int	countConstants(String recipe)	Counts the constant markers in a recipe.
int	countDynamicArgs(String recipe)	Counts the dynamic-argument markers in a recipe.
String	executeConcat(ConcreteValue[] stackArgs)	Concatenates the stack arguments in order for a recipe-less call site.
String	executeConcat(ConcreteValue[] stackArgs, String recipe, Object[] constants)	Builds the concatenated string, expanding the recipe's argument and constant markers in order.
int	getExpectedArgCount(String descriptor)	Counts the parameters declared in a call site descriptor.
boolean	hasRecipe(InvokeDynamicInfo info)	Checks whether the call site variant carries a recipe constant.
boolean	isStringConcat(InvokeDynamicInfo info)	Checks whether the call site's bootstrap method is a StringConcatFactory entry point.
String	parseRecipe(String recipe)	Renders a recipe readably, replacing tag characters with {arg} and {const} markers.

Methods inherited from class java.lang.Object

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

Field Detail

TAG_ARG

public static final char TAG_ARG

See Also:

Constant Field Values

TAG_CONST

public static final char TAG_CONST

See Also:

Constant Field Values

Constructor Detail

StringConcatHandler

public StringConcatHandler()

Method Detail

executeConcat

public String executeConcat(ConcreteValue[] stackArgs,
                            String recipe,
                            Object[] constants)

Builds the concatenated string, expanding the recipe's argument and constant markers in order.

Parameters:

stackArgs - the dynamic argument values popped from the stack

recipe - the concat recipe, or null or empty for plain concatenation

constants - the bootstrap constant arguments, may be null

Returns:

the concatenated string

executeConcat

public String executeConcat(ConcreteValue[] stackArgs)

Concatenates the stack arguments in order for a recipe-less call site.

Parameters:

stackArgs - the dynamic argument values popped from the stack

Returns:

the concatenated string

isStringConcat

public boolean isStringConcat(InvokeDynamicInfo info)

Checks whether the call site's bootstrap method is a StringConcatFactory entry point.

Parameters:

info - the invokedynamic call site information, may be null

Returns:

true if the bootstrap is makeConcat or makeConcatWithConstants

hasRecipe

public boolean hasRecipe(InvokeDynamicInfo info)

Checks whether the call site variant carries a recipe constant.

Parameters:

info - the invokedynamic call site information

Returns:

true if the bootstrap is makeConcatWithConstants

getExpectedArgCount

public int getExpectedArgCount(String descriptor)

Counts the parameters declared in a call site descriptor.

Parameters:

descriptor - the call site method descriptor, may be null

Returns:

the parameter count, or 0 for a malformed descriptor

parseRecipe

public String parseRecipe(String recipe)

Renders a recipe readably, replacing tag characters with {arg} and {const} markers.

Parameters:

recipe - the concat recipe, may be null

Returns:

the readable form, or an empty string for null

countDynamicArgs

public int countDynamicArgs(String recipe)

Counts the dynamic-argument markers in a recipe.

Parameters:

recipe - the concat recipe, may be null

Returns:

the number of argument slots

countConstants

public int countConstants(String recipe)

Counts the constant markers in a recipe.

Parameters:

recipe - the concat recipe, may be null

Returns:

the number of constant slots