/* * Copyright (c) 1994, 2004, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.tools.tree; import sun.tools.java.*;import sun.tools.asm.Assembler;import sun.tools.asm.LocalVariable;import sun.tools.asm.Label;import java.io.PrintStream;import java.util.Hashtable; /** * WARNING: The contents of this source file are not part of any * supported API. Code that depends on them does so at its own risk: * they are subject to change or removal without notice. */publicclass CatchStatement extends Statement { int mod; Expression texpr; Identifier id; Statement body; LocalMember field; /** * Constructor */ public CatchStatement(long where, Expression texpr, IdentifierToken id, Statement body) { super(CATCH, where); this.mod = id.getModifiers(); this.texpr = texpr; this.id = id.getName(); this.body = body; } /** @deprecated */ @Deprecated public CatchStatement(long where, Expression texpr, Identifier id, Statement body) { super(CATCH, where); this.texpr = texpr; this.id = id; this.body = body; } /** * Check statement */ Vset check(Environment env, Context ctx, Vset vset, Hashtable exp) { vset = reach(env, vset); ctx = new Context(ctx, this); Type type = texpr.toType(env, ctx); try { if (ctx.getLocalField(id) != null) { env.error(where, "local.redefined", id); } if (type.isType(TC_ERROR)) { // error message printed out elsewhere } else if (!type.isType(TC_CLASS)) { env.error(where, "catch.not.throwable", type); } else { ClassDefinition def = env.getClassDefinition(type); if (!def.subClassOf(env, env.getClassDeclaration(idJavaLangThrowable))) { env.error(where, "catch.not.throwable", def); } } field = new LocalMember(where, ctx.field.getClassDefinition(), mod, type, id); ctx.declare(env, field); vset.addVar(field.number); return body.check(env, ctx, vset, exp); } catch (ClassNotFound e) { env.error(where, "class.not.found", e.name, opNames[op]); return vset; } } /** * Inline */ public Statement inline(Environment env, Context ctx) { ctx = new Context(ctx, this); if (field.isUsed()) { ctx.declare(env, field); } if (body != null) { body = body.inline(env, ctx); } return this; } /** * Create a copy of the statement for method inlining */ public Statement copyInline(Context ctx, boolean valNeeded) { CatchStatement s = (CatchStatement)clone(); if (body != null) { s.body = body.copyInline(ctx, valNeeded); } if (field != null) { s.field = field.copyInline(ctx); } return s; } /** * Compute cost of inlining this statement */ public int costInline(int thresh, Environment env, Context ctx){ int cost = 1; if (body != null) { cost += body.costInline(thresh, env,ctx); } return cost; } /** * Code */ public void code(Environment env, Context ctx, Assembler asm) { CodeContext newctx = new CodeContext(ctx, this); if (field.isUsed()) { newctx.declare(env, field); asm.add(where, opc_astore, new LocalVariable(field, field.number)); } else { asm.add(where, opc_pop); } if (body != null) { body.code(env, newctx, asm); } //asm.add(newctx.breakLabel); } /** * Print */ public void print(PrintStream out, int indent) { super.print(out, indent); out.print("catch ("); texpr.print(out); out.print(" " + id + ") "); if (body != null) { body.print(out, indent); } else { out.print("<empty>"); } }}
/*
* Copyright (c) 1994, 2004, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.tools.tree;
import sun.tools.java.*;
import sun.tools.asm.Assembler;
import sun.tools.asm.LocalVariable;
import sun.tools.asm.Label;
import java.io.PrintStream;
import java.util.Hashtable;
/**
* WARNING: The contents of this source file are not part of any
* supported API. Code that depends on them does so at its own risk:
* they are subject to change or removal without notice.
*/
public
class CatchStatement extends Statement {
int mod;
Expression texpr;
Identifier id;
Statement body;
LocalMember field;
/**
* Constructor
*/
public CatchStatement(long where, Expression texpr, IdentifierToken id, Statement body) {
super(CATCH, where);
this.mod = id.getModifiers();
this.texpr = texpr;
this.id = id.getName();
this.body = body;
}
/** @deprecated */
@Deprecated
public CatchStatement(long where, Expression texpr, Identifier id, Statement body) {
super(CATCH, where);
this.texpr = texpr;
this.id = id;
this.body = body;
}
/**
* Check statement
*/
Vset check(Environment env, Context ctx, Vset vset, Hashtable exp) {
vset = reach(env, vset);
ctx = new Context(ctx, this);
Type type = texpr.toType(env, ctx);
try {
if (ctx.getLocalField(id) != null) {
env.error(where, "local.redefined", id);
}
if (type.isType(TC_ERROR)) {
// error message printed out elsewhere
} else if (!type.isType(TC_CLASS)) {
env.error(where, "catch.not.throwable", type);
} else {
ClassDefinition def = env.getClassDefinition(type);
if (!def.subClassOf(env,
env.getClassDeclaration(idJavaLangThrowable))) {
env.error(where, "catch.not.throwable", def);
}
}
field = new LocalMember(where, ctx.field.getClassDefinition(), mod, type, id);
ctx.declare(env, field);
vset.addVar(field.number);
return body.check(env, ctx, vset, exp);
} catch (ClassNotFound e) {
env.error(where, "class.not.found", e.name, opNames[op]);
return vset;
}
}
/**
* Inline
*/
public Statement inline(Environment env, Context ctx) {
ctx = new Context(ctx, this);
if (field.isUsed()) {
ctx.declare(env, field);
}
if (body != null) {
body = body.inline(env, ctx);
}
return this;
}
/**
* Create a copy of the statement for method inlining
*/
public Statement copyInline(Context ctx, boolean valNeeded) {
CatchStatement s = (CatchStatement)clone();
if (body != null) {
s.body = body.copyInline(ctx, valNeeded);
}
if (field != null) {
s.field = field.copyInline(ctx);
}
return s;
}
/**
* Compute cost of inlining this statement
*/
public int costInline(int thresh, Environment env, Context ctx){
int cost = 1;
if (body != null) {
cost += body.costInline(thresh, env,ctx);
}
return cost;
}
/**
* Code
*/
public void code(Environment env, Context ctx, Assembler asm) {
CodeContext newctx = new CodeContext(ctx, this);
if (field.isUsed()) {
newctx.declare(env, field);
asm.add(where, opc_astore, new LocalVariable(field, field.number));
} else {
asm.add(where, opc_pop);
}
if (body != null) {
body.code(env, newctx, asm);
}
//asm.add(newctx.breakLabel);
}
/**
* Print
*/
public void print(PrintStream out, int indent) {
super.print(out, indent);
out.print("catch (");
texpr.print(out);
out.print(" " + id + ") ");
if (body != null) {
body.print(out, indent);
} else {
out.print("<empty>");
}
}
}