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Groovy example source code file (CompilePhase.java)

This example Groovy source code file (CompilePhase.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

canonicalization, class_generation, class_generation, compilephase, compilephase, conversion, finalization, initialization, instruction_selection, output, parsing, parsing, semantic_analysis, semantic_analysis

The Groovy CompilePhase.java source code

/*
 * Copyright 2003-2007 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.codehaus.groovy.control;

/**
* The phases of the GroovyCompiler. This is an enum facade on top of the 
* Phases object. In general, prefer using this object over Phases. 
*
* @author Hamlet D'Arcy
*/ 
public enum CompilePhase {

    /**
    * source files are opened and environment configured
    */ 
    INITIALIZATION(Phases.INITIALIZATION),
    
    /**
    * the grammar is used to to produce tree of tokens representing the source code
    */ 
    PARSING(Phases.PARSING),
    
    /**
    * An abstract syntax tree (AST) is created from token trees
    */ 
    CONVERSION(Phases.CONVERSION),
    
    /**
    * Performs consistency and validity checks that the grammar can't check for, and resolves classes
    */ 
    SEMANTIC_ANALYSIS(Phases.SEMANTIC_ANALYSIS),
    
    /**
    * Complete building the AST
    */ 
    CANONICALIZATION(Phases.CANONICALIZATION),
    
    /**
    * instruction set is chosen, for example java5 or pre java5
    */ 
    INSTRUCTION_SELECTION(Phases.INSTRUCTION_SELECTION),
    
    /**
    * creates the binary output in memory
    */ 
    CLASS_GENERATION(Phases.CLASS_GENERATION),
    
    /**
    * write the binary output to the file system
    */ 
    OUTPUT(Phases.OUTPUT),
    
    /**
    * Perform any last cleanup
    */ 
    FINALIZATION(Phases.FINALIZATION),
    ;

    /**
    * The phases as an array, with a null entry. 
    */ 
    public static CompilePhase[] phases = {
        null,
        INITIALIZATION,
        PARSING,
        CONVERSION,
        SEMANTIC_ANALYSIS,
        CANONICALIZATION,
        INSTRUCTION_SELECTION,
        CLASS_GENERATION,
        OUTPUT,
        FINALIZATION,
    };

    int phaseNumber;
    CompilePhase(int phaseNumber) {
        this.phaseNumber = phaseNumber;
    }

    /**
    * Returns the underlieng integer Phase number. 
    */ 
    public int getPhaseNumber() {
        return phaseNumber;
    }

    /**
     * Returns the CompilePhase for the given integer phase number.
     * @param phaseNumber
     *      the phase number
     * @return
     *      the CompilePhase or null if not found
     */
    public static CompilePhase fromPhaseNumber(int phaseNumber) {
        for (CompilePhase phase : values()) {
            if (phase.phaseNumber == phaseNumber) {
                return phase;
            }
        }
        return null;
    }
}

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