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/*
* Copyright (c) 2000, 2020, Oracle and/or its affiliates.
*
* Licensed under the Universal Permissive License v 1.0 as shown at
* http://oss.oracle.com/licenses/upl.
*/
package com.tangosol.dev.compiler.java;
import com.tangosol.dev.assembler.CodeAttribute;
import com.tangosol.dev.assembler.Iconst;
import com.tangosol.dev.compiler.CompilerException;
import com.tangosol.dev.compiler.Context;
import com.tangosol.dev.component.DataType;
import com.tangosol.util.ErrorList;
import java.util.Map;
/**
* Implements a char literal expression.
*
* @version 1.00, 10/05/98
* @author Cameron Purdy
*/
public class CharExpression extends LiteralExpression
{
// ----- construction ---------------------------------------------------
/**
* Construct a CharExpression.
*
* @param block the containing block
* @param literal the literal token
*/
public CharExpression(Block block, Token literal)
{
super(block, literal);
}
// ----- code generation ------------------------------------------------
/**
* Perform semantic checks, parse tree re-organization, name binding,
* and optimizations.
*
* @param ctx the compiler context
* @param setUVars the set of potentially unassigned variables
* @param setFVars the set of potentially assigned final variables
* @param mapThrown the set of potentially thrown checked exceptions
* @param errlist the error list
*
* @return the resulting language element (typically this)
*
* @exception CompilerException thrown if an error occurs that should
* stop the compilation process
*/
protected Element precompile(Context ctx, DualSet setUVars, DualSet setFVars, Map mapThrown, ErrorList errlist)
throws CompilerException
{
setType(DataType.CHAR);
return this;
}
/**
* Perform final optimizations and code generation.
*
* @param ctx the compiler context
* @param code the assembler code attribute to compile to
* @param fReached true if this language element is reached (JLS 14.19)
* @param errlist the error list to log errors to
*
* @return true if the element can complete normally (JLS 14.1)
*
* @exception CompilerException thrown if an error occurs that should
* stop the compilation process
*/
protected boolean compile(Context ctx, CodeAttribute code, boolean fReached, ErrorList errlist)
throws CompilerException
{
code.add(new Iconst(((LiteralToken) getEndToken()).charValue()));
return fReached;
}
// ----- Expression methods ---------------------------------------------
/**
* Determine the constant value of the expression. For a literal
* expression, the constant value is the value of the literal token.
*
* @return the constant value of the expression
*/
public Object getValue()
{
return Integer.valueOf(((LiteralToken) getEndToken()).intValue());
}
// ----- data members ---------------------------------------------------
/**
* The class name.
*/
private static final String CLASS = "CharExpression";
}