Showing the changes to java/pkg/sun/tools/tree/AssignAddExpression.java (1 of 18352 files). Show all
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| 1 | /* | ||
| 2 | * Copyright (c) 1994, 2003, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.tools.tree; | ||
| 27 | |||
| 28 | import sun.tools.java.*; | ||
| 29 | import sun.tools.asm.Assembler; | ||
| 30 | |||
| 31 | /** | ||
| 32 | * WARNING: The contents of this source file are not part of any | ||
| 33 | * supported API. Code that depends on them does so at its own risk: | ||
| 34 | * they are subject to change or removal without notice. | ||
| 35 | */ | ||
| 36 | public | ||
| 37 | class AssignAddExpression extends AssignOpExpression { | ||
| 38 | /** | ||
| 39 | * Constructor | ||
| 40 | */ | ||
| 41 | public AssignAddExpression(long where, Expression left, Expression right) { | ||
| 42 | super(ASGADD, where, left, right); | ||
| 43 | } | ||
| 44 | |||
| 45 | |||
| 46 | /** | ||
| 47 | * The cost of inlining this statement | ||
| 48 | */ | ||
| 49 | public int costInline(int thresh, Environment env, Context ctx) { | ||
| 50 | return type.isType(TC_CLASS) ? 25 : super.costInline(thresh, env, ctx); | ||
| 51 | } | ||
| 52 | |||
| 53 | /** | ||
| 54 | * Code | ||
| 55 | */ | ||
| 56 | void code(Environment env, Context ctx, Assembler asm, boolean valNeeded) { | ||
| 57 | if (itype.isType(TC_CLASS)) { | ||
| 58 | // Create code for String += <value> | ||
| 59 | try { | ||
| 60 | // Create new string buffer. | ||
| 61 | Type argTypes[] = {Type.tString}; | ||
| 62 | ClassDeclaration c = | ||
| 63 | env.getClassDeclaration(idJavaLangStringBuffer); | ||
| 64 | |||
| 65 | if (updater == null) { | ||
| 66 | |||
| 67 | // No access method is needed. | ||
| 68 | |||
| 69 | asm.add(where, opc_new, c); | ||
| 70 | asm.add(where, opc_dup); | ||
| 71 | // stack: ...<buffer><buffer> | ||
| 72 | int depth = left.codeLValue(env, ctx, asm); | ||
| 73 | codeDup(env, ctx, asm, depth, 2); // copy past 2 string buffers | ||
| 74 | // stack: ...[<getter args>]<buffer><buffer>[<getter args>] | ||
| 75 | // where <buffer> isn't yet initialized, and the <getter args> | ||
| 76 | // has length depth and is whatever is needed to get/set the | ||
| 77 | // value | ||
| 78 | left.codeLoad(env, ctx, asm); | ||
| 79 | left.ensureString(env, ctx, asm); // Why is this needed? | ||
| 80 | // stack: ...[<getter args>]<buffer><buffer><string> | ||
| 81 | // call .<init>(String) | ||
| 82 | ClassDefinition sourceClass = ctx.field.getClassDefinition(); | ||
| 83 | MemberDefinition f = c.getClassDefinition(env) | ||
| 84 | .matchMethod(env, sourceClass, | ||
| 85 | idInit, argTypes); | ||
| 86 | asm.add(where, opc_invokespecial, f); | ||
| 87 | // stack: ...[<getter args>]<initialized buffer> | ||
| 88 | // .append(value).toString() | ||
| 89 | right.codeAppend(env, ctx, asm, c, false); | ||
| 90 | f = c.getClassDefinition(env) | ||
| 91 | .matchMethod(env, sourceClass, idToString); | ||
| 92 | asm.add(where, opc_invokevirtual, f); | ||
| 93 | // stack: ...[<getter args>]<string> | ||
| 94 | // dup the string past the <getter args>, if necessary. | ||
| 95 | if (valNeeded) { | ||
| 96 | codeDup(env, ctx, asm, Type.tString.stackSize(), depth); | ||
| 97 | // stack: ...<string>[<getter args>]<string> | ||
| 98 | } | ||
| 99 | // store | ||
| 100 | left.codeStore(env, ctx, asm); | ||
| 101 | |||
| 102 | } else { | ||
| 103 | |||
| 104 | // Access method is required. | ||
| 105 | // (Handling this case fixes 4102566.) | ||
| 106 | |||
| 107 | updater.startUpdate(env, ctx, asm, false); | ||
| 108 | // stack: ...[<getter args>]<string> | ||
| 109 | left.ensureString(env, ctx, asm); // Why is this needed? | ||
| 110 | asm.add(where, opc_new, c); | ||
| 111 | // stack: ...[<getter args>]<string><buffer> | ||
| 112 | asm.add(where, opc_dup_x1); | ||
| 113 | // stack: ...[<getter args>]<buffer><string><buffer> | ||
| 114 | asm.add(where, opc_swap); | ||
| 115 | // stack: ...[<getter args>]<buffer><buffer><string> | ||
| 116 | // call .<init>(String) | ||
| 117 | ClassDefinition sourceClass = ctx.field.getClassDefinition(); | ||
| 118 | MemberDefinition f = c.getClassDefinition(env) | ||
| 119 | .matchMethod(env, sourceClass, | ||
| 120 | idInit, argTypes); | ||
| 121 | asm.add(where, opc_invokespecial, f); | ||
| 122 | // stack: ...[<getter args>]<initialized buffer> | ||
| 123 | // .append(value).toString() | ||
| 124 | right.codeAppend(env, ctx, asm, c, false); | ||
| 125 | f = c.getClassDefinition(env) | ||
| 126 | .matchMethod(env, sourceClass, idToString); | ||
| 127 | asm.add(where, opc_invokevirtual, f); | ||
| 128 | // stack: .. [<getter args>]<string> | ||
| 129 | updater.finishUpdate(env, ctx, asm, valNeeded); | ||
| 130 | |||
| 131 | } | ||
| 132 | |||
| 133 | } catch (ClassNotFound e) { | ||
| 134 | throw new CompilerError(e); | ||
| 135 | } catch (AmbiguousMember e) { | ||
| 136 | throw new CompilerError(e); | ||
| 137 | } | ||
| 138 | } else { | ||
| 139 | super.code(env, ctx, asm, valNeeded); | ||
| 140 | } | ||
| 141 | } | ||
| 142 | |||
| 143 | /** | ||
| 144 | * Code | ||
| 145 | */ | ||
| 146 | void codeOperation(Environment env, Context ctx, Assembler asm) { | ||
| 147 | asm.add(where, opc_iadd + itype.getTypeCodeOffset()); | ||
| 148 | } | ||
| 149 | } | ||