001: /*
002: * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
003: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004: *
005: * This code is free software; you can redistribute it and/or modify it
006: * under the terms of the GNU General Public License version 2 only, as
007: * published by the Free Software Foundation. Sun designates this
008: * particular file as subject to the "Classpath" exception as provided
009: * by Sun in the LICENSE file that accompanied this code.
010: *
011: * This code is distributed in the hope that it will be useful, but WITHOUT
012: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014: * version 2 for more details (a copy is included in the LICENSE file that
015: * accompanied this code).
016: *
017: * You should have received a copy of the GNU General Public License version
018: * 2 along with this work; if not, write to the Free Software Foundation,
019: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020: *
021: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022: * CA 95054 USA or visit www.sun.com if you need additional information or
023: * have any questions.
024: */
025:
026: package com.sun.codemodel.internal;
027:
028: import java.util.ArrayList;
029: import java.util.List;
030:
031: /**
032: * JMethod invocation
033: */
034: public final class JInvocation extends JExpressionImpl implements
035: JStatement {
036:
037: /**
038: * Object expression upon which this method will be invoked, or null if
039: * this is a constructor invocation
040: */
041: private JGenerable object;
042:
043: /**
044: * Name of the method to be invoked
045: */
046: private String name;
047:
048: private boolean isConstructor = false;
049:
050: /**
051: * List of argument expressions for this method invocation
052: */
053: private List<JExpression> args = new ArrayList<JExpression>();
054:
055: /**
056: * If isConstructor==true, this field keeps the type to be created.
057: */
058: private JType type = null;
059:
060: /**
061: * Invokes a method on an object.
062: *
063: * @param object
064: * JExpression for the object upon which
065: * the named method will be invoked,
066: * or null if none
067: *
068: * @param name
069: * Name of method to invoke
070: */
071: JInvocation(JExpression object, String name) {
072: this ((JGenerable) object, name);
073: }
074:
075: /**
076: * Invokes a static method on a class.
077: */
078: JInvocation(JClass type, String name) {
079: this ((JGenerable) type, name);
080: }
081:
082: private JInvocation(JGenerable object, String name) {
083: this .object = object;
084: if (name.indexOf('.') >= 0)
085: throw new IllegalArgumentException(
086: "JClass name contains '.': " + name);
087: this .name = name;
088: }
089:
090: /**
091: * Invokes a constructor of an object (i.e., creates
092: * a new object.)
093: *
094: * @param c
095: * Type of the object to be created. If this type is
096: * an array type, added arguments are treated as array
097: * initializer. Thus you can create an expression like
098: * <code>new int[]{1,2,3,4,5}</code>.
099: */
100: JInvocation(JType c) {
101: this .isConstructor = true;
102: this .type = c;
103: }
104:
105: /**
106: * Add an expression to this invocation's argument list
107: *
108: * @param arg
109: * Argument to add to argument list
110: */
111: public JInvocation arg(JExpression arg) {
112: if (arg == null)
113: throw new IllegalArgumentException();
114: args.add(arg);
115: return this ;
116: }
117:
118: /**
119: * Adds a literal argument.
120: *
121: * Short for {@code arg(JExpr.lit(v))}
122: */
123: public JInvocation arg(String v) {
124: return arg(JExpr.lit(v));
125: }
126:
127: public void generate(JFormatter f) {
128: if (isConstructor && type.isArray()) {
129: // [RESULT] new T[]{arg1,arg2,arg3,...};
130: f.p("new").g(type).p('{');
131: } else {
132: if (isConstructor)
133: f.p("new").g(type).p('(');
134: else if (object != null)
135: f.g(object).p('.').p(name).p('(');
136: else
137: f.id(name).p('(');
138: }
139:
140: f.g(args);
141:
142: if (isConstructor && type.isArray())
143: f.p('}');
144: else
145: f.p(')');
146:
147: if (type instanceof JDefinedClass
148: && ((JDefinedClass) type).isAnonymous()) {
149: ((JAnonymousClass) type).declareBody(f);
150: }
151: }
152:
153: public void state(JFormatter f) {
154: f.g(this ).p(';').nl();
155: }
156:
157: }
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