com.plotnix.jex.adapters
Class InterpretingCompiler

java.lang.Object
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  +--com.plotnix.jex.Compiler
        |
        +--com.plotnix.jex.adapters.InterpretingCompiler

public class InterpretingCompiler

extends Compiler

A wrapper for an interpreter that makes it behave like a compiler. Each compilation method checks the syntax of the expression and wraps the expression into an InterpretedExpression, which is a wrapper for the expression string.

Version:

$Revision$

Author:

Dmitri Plotnikov

Constructor Summary

InterpretingCompiler(Interpreter interpreter)

Method Summary

Expression	compileExpression(java.lang.String expression) Compiles an expression intended for evaluation that produces a value.
IterationExpression	compileIterationExpression(java.lang.String expression) Compiles an expression describing an iteration.
VariableExpression	compileVariableExpression(java.lang.String expression) Compiles an expression describing the left hand side of an assignment.

Methods inherited from class com.plotnix.jex.Compiler

getCompiler, getCompilerImplementation

Methods inherited from class java.lang.Object

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

Constructor Detail

InterpretingCompiler

public InterpretingCompiler(Interpreter interpreter)

Parameters:

interpreter - is the interpreter that needs to be wrapped

Method Detail

compileExpression

public Expression compileExpression(java.lang.String expression)

Description copied from class: Compiler

Compiles an expression intended for evaluation that produces a value. For example, "2+2" will be a valid argument for this method for many expression languages.

May throw an UnsupportedOperationException.

Overrides:

compileExpression in class Compiler

See Also:

Compiler.compileExpression(String)

compileIterationExpression

public IterationExpression compileIterationExpression(java.lang.String expression)

Description copied from class: Compiler

Compiles an expression describing an iteration. For example, "addressBook//phone" is a valid argument for this method for an XPath compiler.

May throw an UnsupportedOperationException.

Overrides:

compileIterationExpression in class Compiler

See Also:

Compiler.compileIterationExpression(String)

compileVariableExpression

public VariableExpression compileVariableExpression(java.lang.String expression)

Description copied from class: Compiler

Compiles an expression describing the left hand side of an assignment. For example, "addressBook/contact[name="John Doe"]/phone" is a valid argument for this method for an XPath compiler.

May throw an UnsupportedOperationException.

Overrides:

compileVariableExpression in class Compiler

See Also:

Compiler.compileVariableExpression(String)