Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.codegen.processor/src/com/oracle/truffle/codegen/processor/ast/CodeTreeBuilder.java @ 7504:d295ab2902fb
Removed debug log output.
author | Christian Humer <christian.humer@gmail.com> |
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date | Fri, 18 Jan 2013 13:39:04 +0100 |
parents | 6343a09b2ec1 |
children | 5e3d1a68664e |
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/* * Copyright (c) 2012, 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. * * 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 com.oracle.truffle.codegen.processor.ast; import static com.oracle.truffle.codegen.processor.ast.CodeTreeKind.*; import java.util.*; import javax.lang.model.element.*; import javax.lang.model.type.*; import com.oracle.truffle.codegen.processor.*; public class CodeTreeBuilder { private BuilderCodeTree currentElement; private final BuilderCodeTree root; public CodeTreeBuilder() { this.root = new BuilderCodeTree(GROUP, null, null); this.currentElement = root; } public CodeTreeBuilder(CodeTree tree) { this.root = (BuilderCodeTree) tree; this.currentElement = root; } public CodeTreeBuilder statement(String statement) { return startStatement().string(statement).end(); } public CodeTreeBuilder statement(CodeTree statement) { return startStatement().tree(statement).end(); } public static CodeTreeBuilder createBuilder() { return new CodeTreeBuilder(); } public static CodeTree singleString(String s) { return new CodeTreeBuilder().string(s).getTree(); } private CodeTreeBuilder push(CodeTreeKind kind) { return push(new BuilderCodeTree(kind, null, null)); } private CodeTreeBuilder push(String string) { return push(new BuilderCodeTree(CodeTreeKind.STRING, null, string)); } private CodeTreeBuilder push(TypeMirror type) { return push(new BuilderCodeTree(CodeTreeKind.TYPE, type, null)); } private CodeTreeBuilder push(CodeTreeKind kind, TypeMirror type, String string) { return push(new BuilderCodeTree(kind, type, string)); } private CodeTreeBuilder push(BuilderCodeTree tree) { if (currentElement != null) { currentElement.add(tree); } switch (tree.getCodeKind()) { case COMMA_GROUP: case GROUP: case INDENT: currentElement = tree; break; } return this; } private void clearLast(CodeTreeKind kind) { clearLastRec(kind, currentElement.getEnclosedElements()); } public CodeTreeBuilder startStatement() { startGroup(); registerCallBack(new EndCallback() { @Override public void beforeEnd() { string(";").newLine(); } @Override public void afterEnd() { } }); return this; } public CodeTreeBuilder startGroup() { return push(CodeTreeKind.GROUP); } public CodeTreeBuilder startCommaGroup() { return push(CodeTreeKind.COMMA_GROUP); } public CodeTreeBuilder startCall(String callSite) { return startCall(null, callSite); } public CodeTreeBuilder startCall(String receiver, String callSite) { if (receiver == null) { return startGroup().string(callSite).startParanthesesCommaGroup().endAfter(); } else { return startGroup().string(receiver).string(".").string(callSite).startParanthesesCommaGroup().endAfter(); } } public CodeTreeBuilder startStaticCall(TypeMirror type, String methodName) { return startGroup().push(CodeTreeKind.STATIC_METHOD_REFERENCE, type, methodName).startParanthesesCommaGroup().endAfter(); } public CodeTreeBuilder startStaticCall(ExecutableElement method) { return startStaticCall(Utils.findNearestEnclosingType(method).asType(), method.getSimpleName().toString()); } public CodeTreeBuilder staticReference(TypeMirror type, String fieldName) { return push(CodeTreeKind.STATIC_FIELD_REFERENCE, type, fieldName); } private CodeTreeBuilder endAndWhitespaceAfter() { registerCallBack(new EndCallback() { @Override public void beforeEnd() { } @Override public void afterEnd() { string(" "); end(); } }); return this; } private CodeTreeBuilder endAfter() { registerCallBack(new EndCallback() { @Override public void beforeEnd() { } @Override public void afterEnd() { end(); } }); return this; } private CodeTreeBuilder startParanthesesCommaGroup() { startGroup(); string("(").startCommaGroup(); registerCallBack(new EndCallback() { @Override public void beforeEnd() { } @Override public void afterEnd() { string(")"); } }); endAfter(); return this; } public CodeTreeBuilder startParantheses() { startGroup(); string("(").startGroup(); registerCallBack(new EndCallback() { @Override public void beforeEnd() { } @Override public void afterEnd() { string(")"); } }); endAfter(); return this; } public CodeTreeBuilder startDoubleQuote() { startGroup().string("\""); registerCallBack(new EndCallback() { @Override public void beforeEnd() { } @Override public void afterEnd() { string("\""); } }); return this; } public CodeTreeBuilder string(String chunk1) { return push(chunk1); } public CodeTreeBuilder string(String chunk1, String chunk2) { return push(GROUP).string(chunk1).string(chunk2).end(); } public CodeTreeBuilder string(String chunk1, String chunk2, String chunk3) { return push(GROUP).string(chunk1).string(chunk2).string(chunk3).end(); } public CodeTreeBuilder string(String chunk1, String chunk2, String chunk3, String chunk4) { return push(GROUP).string(chunk1).string(chunk2).string(chunk3).string(chunk4).end(); } public CodeTreeBuilder tree(CodeTree treeToAdd) { return push((BuilderCodeTree) treeToAdd).end(); } public CodeTreeBuilder string(String chunk1, String chunk2, String chunk3, String chunk4, String... chunks) { push(GROUP).string(chunk1).string(chunk2).string(chunk3).string(chunk4); for (int i = 0; i < chunks.length; i++) { string(chunks[i]); } return end(); } public CodeTreeBuilder dot() { return string("."); } public CodeTreeBuilder newLine() { return push(NEW_LINE); } public CodeTreeBuilder startWhile() { return startGroup().string("while ").startParanthesesCommaGroup().endAndWhitespaceAfter().startGroup().endAfter(); } public CodeTreeBuilder startIf() { return startGroup().string("if ").startParanthesesCommaGroup().endAndWhitespaceAfter().startGroup().endAfter(); } public CodeTreeBuilder startElseIf() { clearLast(CodeTreeKind.NEW_LINE); return startGroup().string(" else if ").startParanthesesCommaGroup().endAndWhitespaceAfter().startGroup().endAfter(); } public CodeTreeBuilder startElseBlock() { clearLast(CodeTreeKind.NEW_LINE); return startGroup().string(" else ").startBlock().endAfter(); } private boolean clearLastRec(CodeTreeKind kind, List<CodeTree> children) { for (int i = children.size() - 1; i >= 0; i--) { CodeTree child = children.get(i); if (child.getCodeKind() == kind) { children.remove(children.get(i)); return true; } else { if (clearLastRec(kind, child.getEnclosedElements())) { return true; } } } return false; } public CodeTreeBuilder startCase() { startGroup().string("case "); registerCallBack(new EndCallback() { @Override public void beforeEnd() { string(" :").newLine(); } @Override public void afterEnd() { } }); return this; } public CodeTreeBuilder caseDefault() { return startGroup().string("default :").newLine().end(); } public CodeTreeBuilder startSwitch() { return startGroup().string("switch ").startParanthesesCommaGroup().endAndWhitespaceAfter(); } public CodeTreeBuilder startReturn() { ExecutableElement method = findMethod(); if (method != null && Utils.isVoid(method.getReturnType())) { startGroup(); registerCallBack(new EndCallback() { @Override public void beforeEnd() { string(";").newLine(); // complete statement to execute } @Override public void afterEnd() { string("return").string(";").newLine(); // emit a return; } }); return this; } else { return startStatement().string("return "); } } public CodeTreeBuilder startAssert() { return startStatement().string("assert "); } public CodeTreeBuilder startNew(TypeMirror uninializedNodeClass) { return startGroup().string("new ").type(uninializedNodeClass).startParanthesesCommaGroup().endAfter(); } public CodeTreeBuilder startNew(String typeName) { return startGroup().string("new ").string(typeName).startParanthesesCommaGroup().endAfter(); } public CodeTreeBuilder startIndention() { return push(CodeTreeKind.INDENT); } public CodeTreeBuilder end() { BuilderCodeTree tree = currentElement; EndCallback callback = tree.getAtEndListener(); if (callback != null) { callback.beforeEnd(); toParent(); callback.afterEnd(); } else { toParent(); } return this; } private void toParent() { Element parent = currentElement.getEnclosingElement(); if (currentElement != root) { this.currentElement = (BuilderCodeTree) parent; } else { this.currentElement = root; } } public CodeTreeBuilder startBlock() { startGroup(); string("{").newLine().startIndention(); registerCallBack(new EndCallback() { @Override public void beforeEnd() { } @Override public void afterEnd() { string("}").newLine(); } }); endAfter(); return this; } private void registerCallBack(EndCallback callback) { currentElement.registerAtEnd(callback); } public CodeTreeBuilder declaration(TypeMirror type, String name, CodeTree init) { if (Utils.isVoid(type)) { startStatement(); tree(init); end(); } else { startStatement(); type(type); string(" "); string(name); if (init != null) { string(" = "); tree(init); } end(); // statement } return this; } public CodeTreeBuilder declaration(TypeMirror type, String name, CodeTreeBuilder init) { if (init == this) { throw new IllegalArgumentException("Recursive builder usage."); } return declaration(type, name, init.getTree()); } public CodeTreeBuilder declaration(TypeMirror type, String name) { return declaration(type, name, (CodeTree) null); } public CodeTreeBuilder create() { return new CodeTreeBuilder(); } public CodeTreeBuilder type(TypeMirror type) { return push(type); } public CodeTreeBuilder typeLiteral(TypeMirror type) { return startGroup().type(type).string(".class").end(); } private void assertRoot() { if (currentElement != root) { throw new IllegalStateException("CodeTreeBuilder was not ended properly."); } } public CodeTreeBuilder startCaseBlock() { return startIndention(); } public CodeTreeBuilder startThrow() { return startStatement().string("throw "); } public CodeTree getTree() { assertRoot(); return root; } public CodeTree getRoot() { return root; } public CodeTreeBuilder cast(TypeMirror type, CodeTree content) { if (Utils.isVoid(type)) { tree(content); return this; } else if (Utils.getQualifiedName(type).equals("java.lang.Object")) { tree(content); return this; } else { return startGroup().string("(").type(type).string(")").string(" ").tree(content).end(); } } public CodeTreeBuilder startSuperCall() { return string("super").startParanthesesCommaGroup(); } public CodeTreeBuilder returnFalse() { return startReturn().string("false").end(); } public CodeTreeBuilder returnStatement() { return statement("return"); } public ExecutableElement findMethod() { Element element = currentElement; while (element != null && (element.getKind() != ElementKind.METHOD)) { element = element.getEnclosingElement(); } return element != null ? (ExecutableElement) element : null; } public CodeTreeBuilder returnTrue() { return startReturn().string("true").end(); } public CodeTreeBuilder instanceOf(String var, TypeMirror type) { string(var); TypeElement element = Utils.fromTypeMirror(type); if (element == null) { throw new IllegalArgumentException("Cannot call instanceof for a non supported type: " + type.getKind()); } string(" instanceof ").type(type); return this; } public CodeTreeBuilder defaultValue(TypeMirror mirror) { switch (mirror.getKind()) { case VOID: return string(""); case ARRAY: case DECLARED: case PACKAGE: case NULL: return string("null"); case BOOLEAN: return string("false"); case BYTE: return string("(byte) 0"); case CHAR: return string("(char) 0"); case DOUBLE: return string("0.0D"); case LONG: return string("0L"); case INT: return string("0"); case FLOAT: return string("0.0F"); case SHORT: return string("(short) 0"); default: throw new AssertionError(); } } public CodeTreeBuilder assertFalse() { return startAssert().string("false").end(); } public CodeTreeBuilder breakStatement() { return statement("break"); } public CodeTreeBuilder isNull() { return string(" == null"); } public CodeTreeBuilder isNotNull() { return string(" != null"); } public CodeTreeBuilder is(CodeTree tree) { return string(" == ").tree(tree); } public CodeTreeBuilder startTryBlock() { return string("try ").startBlock(); } public CodeTreeBuilder startCatchBlock(TypeMirror exceptionType, String localVarName) { clearLast(CodeTreeKind.NEW_LINE); string(" catch (").type(exceptionType).string(" ").string(localVarName).string(") "); return startBlock(); } public CodeTreeBuilder startFinallyBlock() { clearLast(CodeTreeKind.NEW_LINE); string(" finally "); return startBlock(); } public CodeTreeBuilder null_() { return string("null"); } private static class BuilderCodeTree extends CodeTree { private EndCallback atEndListener; public BuilderCodeTree(CodeTreeKind kind, TypeMirror type, String string) { super(kind, type, string); } public void registerAtEnd(EndCallback atEnd) { if (this.atEndListener != null) { this.atEndListener = new CompoundCallback(this.atEndListener, atEnd); } else { this.atEndListener = atEnd; } } public EndCallback getAtEndListener() { return atEndListener; } @Override public String toString() { final StringBuilder b = new StringBuilder(); acceptCodeElementScanner(new Printer(b), null); return b.toString(); } private static class CompoundCallback implements EndCallback { private final EndCallback callback1; private final EndCallback callback2; public CompoundCallback(EndCallback callback1, EndCallback callback2) { this.callback1 = callback1; this.callback2 = callback2; } @Override public void afterEnd() { callback1.afterEnd(); callback2.afterEnd(); } @Override public void beforeEnd() { callback1.beforeEnd(); callback1.beforeEnd(); } } } private interface EndCallback { void beforeEnd(); void afterEnd(); } private static class Printer extends CodeElementScanner<Void, Void> { private int indent; private boolean newLine; private final String ln = "\n"; private final StringBuilder b; Printer(StringBuilder b) { this.b = b; } @Override public void visitTree(CodeTree e, Void p) { switch (e.getCodeKind()) { case COMMA_GROUP: List<CodeTree> children = e.getEnclosedElements(); for (int i = 0; i < children.size(); i++) { children.get(i).acceptCodeElementScanner(this, p); if (i < e.getEnclosedElements().size() - 1) { b.append(", "); } } break; case GROUP: super.visitTree(e, p); break; case INDENT: indent(); super.visitTree(e, p); dedent(); break; case NEW_LINE: writeLn(); break; case STRING: if (e.getString() != null) { write(e.getString()); } else { write("null"); } break; case TYPE: write(Utils.getSimpleName(e.getType())); break; default: assert false; return; } } private void indent() { indent++; } private void dedent() { indent--; } private void writeLn() { write(ln); newLine = true; } private void write(String m) { if (newLine && m != ln) { writeIndent(); newLine = false; } b.append(m); } private void writeIndent() { for (int i = 0; i < indent; i++) { b.append(" "); } } } }