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Diffstat (limited to 'src/declarative/qml/v4/qv4compiler.cpp')
| -rw-r--r-- | src/declarative/qml/v4/qv4compiler.cpp | 1419 |
1 files changed, 0 insertions, 1419 deletions
diff --git a/src/declarative/qml/v4/qv4compiler.cpp b/src/declarative/qml/v4/qv4compiler.cpp deleted file mode 100644 index 0a0269d903..0000000000 --- a/src/declarative/qml/v4/qv4compiler.cpp +++ /dev/null @@ -1,1419 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the QtDeclarative module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qv4compiler_p.h" -#include "qv4compiler_p_p.h" -#include "qv4program_p.h" -#include "qv4ir_p.h" -#include "qv4irbuilder_p.h" - -#include <private/qdeclarativejsast_p.h> -#include <private/qdeclarativeaccessors_p.h> -#include <private/qdeclarativejsengine_p.h> - -QT_BEGIN_NAMESPACE - -DEFINE_BOOL_CONFIG_OPTION(bindingsDump, QML_BINDINGS_DUMP) -DEFINE_BOOL_CONFIG_OPTION(qmlDisableOptimizer, QML_DISABLE_OPTIMIZER) -DEFINE_BOOL_CONFIG_OPTION(qmlExperimental, QML_EXPERIMENTAL) -DEFINE_BOOL_CONFIG_OPTION(qmlVerboseCompiler, QML_VERBOSE_COMPILER) -DEFINE_BOOL_CONFIG_OPTION(qmlBindingsTestEnv, QML_BINDINGS_TEST) - -static bool qmlBindingsTest = false; -static bool qmlEnableV4 = true; - -using namespace QDeclarativeJS; -QV4CompilerPrivate::QV4CompilerPrivate() - : _function(0) , _block(0) , _discarded(false), registerCount(0) -{ -} - -// -// tracing -// -void QV4CompilerPrivate::trace(int line, int column) -{ - bytecode.clear(); - - this->currentReg = _function->tempCount; - this->registerCount = qMax(this->registerCount, this->currentReg); - - foreach (IR::BasicBlock *bb, _function->basicBlocks) { - if (! bb->isTerminated() && (bb->index + 1) < _function->basicBlocks.size()) - bb->JUMP(_function->basicBlocks.at(bb->index + 1)); - } - - QVector<IR::BasicBlock *> blocks; - trace(&blocks); - currentBlockMask = 0x00000001; - - - for (int i = 0; !_discarded && i < blocks.size(); ++i) { - IR::BasicBlock *block = blocks.at(i); - IR::BasicBlock *next = i + 1 < blocks.size() ? blocks.at(i + 1) : 0; - if (IR::Stmt *terminator = block->terminator()) { - if (IR::CJump *cj = terminator->asCJump()) { - if (cj->iffalse != next) { - IR::Jump *jump = _function->pool->New<IR::Jump>(); - jump->init(cj->iffalse); - block->statements.append(jump); - } - } else if (IR::Jump *j = terminator->asJump()) { - if (j->target == next) { - block->statements.resize(block->statements.size() - 1); - } - } - } - - block->offset = bytecode.size(); - - if (bytecode.isEmpty()) { - if (qmlBindingsTest || bindingsDump()) { - Instr::BindingId id; - id.column = column; - id.line = line; - gen(id); - } - - if (qmlBindingsTest) { - QString str = expression->expression.asScript(); - QByteArray strdata((const char *)str.constData(), str.length() * sizeof(QChar)); - int offset = data.count(); - data += strdata; - - Instr::EnableV4Test test; - test.reg = 0; - test.offset = offset; - test.length = str.length(); - gen(test); - } - } - - bool usic = false; - int patchesCount = patches.count(); - qSwap(usedSubscriptionIdsChanged, usic); - - int blockopIndex = bytecode.size(); - Instr::Block blockop; - blockop.block = currentBlockMask; - gen(blockop); - - foreach (IR::Stmt *s, block->statements) { - if (! _discarded) - s->accept(this); - } - - qSwap(usedSubscriptionIdsChanged, usic); - - if (usic) { - if (currentBlockMask == 0x80000000) { - discard(); - return; - } - currentBlockMask <<= 1; - } else if (! _discarded) { - const int adjust = bytecode.remove(blockopIndex); - // Correct patches - for (int ii = patchesCount; ii < patches.count(); ++ii) - patches[ii].offset -= adjust; - } - } - -#ifdef DEBUG_IR_STRUCTURE - IR::IRDump dump; - for (int i = 0; i < blocks.size(); ++i) { - dump.basicblock(blocks.at(i)); - } -#endif - - - if (! _discarded) { - // back patching - foreach (const Patch &patch, patches) { - V4Instr &instr = bytecode[patch.offset]; - int size = V4Instr::size(instructionType(&instr)); - instr.branchop.offset = patch.block->offset - patch.offset - size; - } - - patches.clear(); - } -} - -void QV4CompilerPrivate::trace(QVector<IR::BasicBlock *> *blocks) -{ - for (int i = 0; i < _function->basicBlocks.size(); ++i) { - IR::BasicBlock *block = _function->basicBlocks.at(i); - - while (! blocks->contains(block)) { - blocks->append(block); - - if (IR::Stmt *terminator = block->terminator()) { - if (IR::CJump *cj = terminator->asCJump()) - block = cj->iffalse; - else if (IR::Jump *j = terminator->asJump()) - block = j->target; - } - } - } -} - -void QV4CompilerPrivate::traceExpression(IR::Expr *e, quint8 r) -{ - if (!e) { - discard(); - } else { - qSwap(currentReg, r); - e->accept(this); - qSwap(currentReg, r); - } -} - -// -// expressions -// -void QV4CompilerPrivate::visitConst(IR::Const *e) -{ - switch (e->type) { - case IR::BoolType: { - Instr::LoadBool i; - i.reg = currentReg; - i.value = e->value; - gen(i); - } break; - - case IR::IntType: { - Instr::LoadInt i; - i.reg = currentReg; - i.value = e->value; - gen(i); - } break; - - case IR::RealType: { - Instr::LoadReal i; - i.reg = currentReg; - i.value = e->value; - gen(i); - } break; - - default: - if (qmlVerboseCompiler()) - qWarning() << Q_FUNC_INFO << "unexpected type"; - discard(); - } -} - -void QV4CompilerPrivate::visitString(IR::String *e) -{ - registerLiteralString(currentReg, e->value); -} - -void QV4CompilerPrivate::visitName(IR::Name *e) -{ - if (e->base) { - // fetch the object and store it in reg. - traceExpression(e->base, currentReg); - } else { - _subscribeName.clear(); - } - - if (e->storage == IR::Name::RootStorage) { - - Instr::LoadRoot instr; - instr.reg = currentReg; - gen(instr); - - if (e->symbol == IR::Name::IdObject) { - // The ID is a reference to the root object - return; - } - - } else if (e->storage == IR::Name::ScopeStorage) { - - Instr::LoadScope instr; - instr.reg = currentReg; - gen(instr); - - _subscribeName << contextName(); - - } else if (e->storage == IR::Name::IdStorage) { - - Instr::LoadId instr; - instr.reg = currentReg; - instr.index = e->idObject->idIndex; - gen(instr); - - _subscribeName << QLatin1String("$$$ID_") + *e->id; - - if (blockNeedsSubscription(_subscribeName)) { - Instr::SubscribeId sub; - sub.reg = currentReg; - sub.offset = subscriptionIndex(_subscribeName); - sub.index = instr.index; - gen(sub); - } - - return; - } else { - // No action needed - } - - switch (e->symbol) { - case IR::Name::Unbound: - case IR::Name::IdObject: - case IR::Name::Slot: - case IR::Name::Object: { - Q_ASSERT(!"Unreachable"); - discard(); - } break; - - case IR::Name::AttachType: { - _subscribeName << *e->id; - - Instr::LoadAttached attached; - attached.output = currentReg; - attached.reg = currentReg; - attached.exceptionId = exceptionId(e->line, e->column); - if (e->declarativeType->attachedPropertiesId() == -1) - discard(); - attached.id = e->declarativeType->attachedPropertiesId(); - gen(attached); - } break; - - case IR::Name::Property: { - _subscribeName << *e->id; - - if (e->property->coreIndex == -1) { - QMetaProperty prop; - e->property->load(prop, QDeclarativeEnginePrivate::get(engine)); - } - - const int propTy = e->property->propType; - QDeclarativeRegisterType regType; - - switch (propTy) { - case QMetaType::QReal: - regType = QRealType; - break; - case QMetaType::Bool: - regType = BoolType; - break; - case QMetaType::Int: - regType = IntType; - break; - case QMetaType::QString: - regType = QStringType; - break; - case QMetaType::QUrl: - regType = QUrlType; - break; - case QMetaType::QColor: - regType = QColorType; - break; - - default: - if (propTy == QDeclarativeMetaType::QQuickAnchorLineMetaTypeId()) { - regType = PODValueType; - } else if (QDeclarativeMetaType::isQObject(propTy)) { - regType = QObjectStarType; - } else { - if (qmlVerboseCompiler()) - qWarning() << "Discard unsupported property type:" << QMetaType::typeName(propTy); - discard(); // Unsupported type - return; - } - - break; - } // switch - - if (e->property->hasAccessors()) { - Instr::FetchAndSubscribe fetch; - fetch.reg = currentReg; - fetch.subscription = subscriptionIndex(_subscribeName); - fetch.exceptionId = exceptionId(e->line, e->column); - fetch.valueType = regType; - fetch.property = *e->property; - gen(fetch); - } else { - if (blockNeedsSubscription(_subscribeName) && e->property->notifyIndex != -1) { - Instr::Subscribe sub; - sub.reg = currentReg; - sub.offset = subscriptionIndex(_subscribeName); - sub.index = e->property->notifyIndex; - gen(sub); - } - - Instr::Fetch fetch; - fetch.reg = currentReg; - fetch.index = e->property->coreIndex; - fetch.exceptionId = exceptionId(e->line, e->column); - fetch.valueType = regType; - gen(fetch); - } - - } break; - } // switch -} - -void QV4CompilerPrivate::visitTemp(IR::Temp *e) -{ - if (currentReg != e->index) { - Instr::Copy i; - i.reg = currentReg; - i.src = e->index; - gen(i); - } -} - -void QV4CompilerPrivate::visitUnop(IR::Unop *e) -{ - quint8 src = currentReg; - - if (IR::Temp *temp = e->expr->asTemp()) { - src = temp->index; - } else { - traceExpression(e->expr, src); - } - - switch (e->op) { - case IR::OpInvalid: - Q_ASSERT(!"unreachable"); - break; - - case IR::OpIfTrue: - convertToBool(e->expr, src); - if (src != currentReg) { - Instr::Copy i; - i.reg = currentReg; - i.src = src; - gen(i); - } - break; - - case IR::OpNot: { - Instr::UnaryNot i; - convertToBool(e->expr, src); - i.output = currentReg; - i.src = src; - gen(i); - } break; - - case IR::OpUMinus: - if (e->expr->type == IR::RealType) { - Instr::UnaryMinusReal i; - i.output = currentReg; - i.src = src; - gen(i); - } else if (e->expr->type == IR::IntType) { - convertToReal(e->expr, currentReg); - Instr::UnaryMinusReal i; - i.output = currentReg; - i.src = src; - gen(i); - } else { - discard(); - } - break; - - case IR::OpUPlus: - if (e->expr->type == IR::RealType) { - Instr::UnaryPlusReal i; - i.output = currentReg; - i.src = src; - gen(i); - } else if (e->expr->type == IR::IntType) { - convertToReal(e->expr, currentReg); - Instr::UnaryPlusReal i; - i.output = currentReg; - i.src = src; - gen(i); - } else { - discard(); - } - break; - - case IR::OpCompl: - // TODO - discard(); - break; - - case IR::OpBitAnd: - case IR::OpBitOr: - case IR::OpBitXor: - case IR::OpAdd: - case IR::OpSub: - case IR::OpMul: - case IR::OpDiv: - case IR::OpMod: - case IR::OpLShift: - case IR::OpRShift: - case IR::OpURShift: - case IR::OpGt: - case IR::OpLt: - case IR::OpGe: - case IR::OpLe: - case IR::OpEqual: - case IR::OpNotEqual: - case IR::OpStrictEqual: - case IR::OpStrictNotEqual: - case IR::OpAnd: - case IR::OpOr: - Q_ASSERT(!"unreachable"); - break; - } // switch -} - -void QV4CompilerPrivate::convertToReal(IR::Expr *expr, int reg) -{ - if (expr->type == IR::RealType) - return; - - switch (expr->type) { - case IR::BoolType: { - Instr::ConvertBoolToReal i; - i.output = i.src = reg; - gen(i); - } break; - - case IR::IntType: { - Instr::ConvertIntToReal i; - i.output = i.src = reg; - gen(i); - } break; - - case IR::RealType: - // nothing to do - return; - - default: - discard(); - break; - } // switch -} - -void QV4CompilerPrivate::convertToInt(IR::Expr *expr, int reg) -{ - if (expr->type == IR::IntType) - return; - - switch (expr->type) { - case IR::BoolType: { - Instr::ConvertBoolToInt i; - i.output = i.src = reg; - gen(i); - } break; - - case IR::IntType: - // nothing to do - return; - - case IR::RealType: { - Instr::ConvertRealToInt i; - i.output = i.src = reg; - gen(i); - } break; - - default: - discard(); - break; - } // switch -} - -void QV4CompilerPrivate::convertToBool(IR::Expr *expr, int reg) -{ - if (expr->type == IR::BoolType) - return; - - switch (expr->type) { - case IR::BoolType: - // nothing to do - break; - - case IR::IntType: { - Instr::ConvertIntToBool i; - i.output = i.src = reg; - gen(i); - } break; - - case IR::RealType: { - Instr::ConvertRealToBool i; - i.output = i.src = reg; - gen(i); - } return; - - case IR::StringType: { - Instr::ConvertStringToBool i; - i.output = i.src = reg; - gen(i); - } return; - - case IR::ColorType: { - Instr::ConvertColorToBool i; - i.output = i.src = reg; - gen(i); - } return; - - default: - discard(); - break; - } // switch -} - -quint8 QV4CompilerPrivate::instructionOpcode(IR::Binop *e) -{ - switch (e->op) { - case IR::OpInvalid: - return V4Instr::Noop; - - case IR::OpIfTrue: - case IR::OpNot: - case IR::OpUMinus: - case IR::OpUPlus: - case IR::OpCompl: - return V4Instr::Noop; - - case IR::OpBitAnd: - return V4Instr::BitAndInt; - - case IR::OpBitOr: - return V4Instr::BitOrInt; - - case IR::OpBitXor: - return V4Instr::BitXorInt; - - case IR::OpAdd: - if (e->type == IR::StringType) - return V4Instr::AddString; - return V4Instr::AddReal; - - case IR::OpSub: - return V4Instr::SubReal; - - case IR::OpMul: - return V4Instr::MulReal; - - case IR::OpDiv: - return V4Instr::DivReal; - - case IR::OpMod: - return V4Instr::ModReal; - - case IR::OpLShift: - return V4Instr::LShiftInt; - - case IR::OpRShift: - return V4Instr::RShiftInt; - - case IR::OpURShift: - return V4Instr::URShiftInt; - - case IR::OpGt: - if (e->left->type == IR::StringType) - return V4Instr::GtString; - return V4Instr::GtReal; - - case IR::OpLt: - if (e->left->type == IR::StringType) - return V4Instr::LtString; - return V4Instr::LtReal; - - case IR::OpGe: - if (e->left->type == IR::StringType) - return V4Instr::GeString; - return V4Instr::GeReal; - - case IR::OpLe: - if (e->left->type == IR::StringType) - return V4Instr::LeString; - return V4Instr::LeReal; - - case IR::OpEqual: - if (e->left->type == IR::StringType) - return V4Instr::EqualString; - return V4Instr::EqualReal; - - case IR::OpNotEqual: - if (e->left->type == IR::StringType) - return V4Instr::NotEqualString; - return V4Instr::NotEqualReal; - - case IR::OpStrictEqual: - if (e->left->type == IR::StringType) - return V4Instr::StrictEqualString; - return V4Instr::StrictEqualReal; - - case IR::OpStrictNotEqual: - if (e->left->type == IR::StringType) - return V4Instr::StrictNotEqualString; - return V4Instr::StrictNotEqualReal; - - case IR::OpAnd: - case IR::OpOr: - return V4Instr::Noop; - - } // switch - - return V4Instr::Noop; -} - -void QV4CompilerPrivate::visitBinop(IR::Binop *e) -{ - int left = currentReg; - int right = currentReg + 1; - - if (e->left->asTemp() && e->type != IR::StringType) // Not sure if the e->type != String test is needed - left = e->left->asTemp()->index; - else - traceExpression(e->left, left); - - if (IR::Temp *t = e->right->asTemp()) - right = t->index; - else - traceExpression(e->right, right); - - if (e->left->type != e->right->type) { - if (qmlVerboseCompiler()) - qWarning().nospace() << "invalid operands to binary operator " << IR::binaryOperator(e->op) - << "(`" << IR::binaryOperator(e->left->type) - << "' and `" - << IR::binaryOperator(e->right->type) - << "'"; - discard(); - return; - } - - switch (e->op) { - case IR::OpInvalid: - discard(); - break; - - // unary - case IR::OpIfTrue: - case IR::OpNot: - case IR::OpUMinus: - case IR::OpUPlus: - case IR::OpCompl: - discard(); - break; - - case IR::OpBitAnd: - case IR::OpBitOr: - case IR::OpBitXor: - case IR::OpLShift: - case IR::OpRShift: - case IR::OpURShift: - convertToInt(e->left, left); - convertToInt(e->right, right); - break; - - case IR::OpAdd: - if (e->type != IR::StringType) { - convertToReal(e->left, left); - convertToReal(e->right, right); - } - break; - - case IR::OpSub: - case IR::OpMul: - case IR::OpDiv: - case IR::OpMod: - convertToReal(e->left, left); - convertToReal(e->right, right); - break; - - case IR::OpGt: - case IR::OpLt: - case IR::OpGe: - case IR::OpLe: - case IR::OpEqual: - case IR::OpNotEqual: - case IR::OpStrictEqual: - case IR::OpStrictNotEqual: - if (e->left->type != IR::StringType) { - convertToReal(e->left, left); - convertToReal(e->right, right); - } - break; - - case IR::OpAnd: - case IR::OpOr: - discard(); // ### unreachable - break; - } // switch - - const quint8 opcode = instructionOpcode(e); - if (opcode != V4Instr::Noop) { - V4Instr instr; - instr.binaryop.output = currentReg; - instr.binaryop.left = left; - instr.binaryop.right = right; - gen(static_cast<V4Instr::Type>(opcode), instr); - } -} - -void QV4CompilerPrivate::visitCall(IR::Call *call) -{ - if (IR::Name *name = call->base->asName()) { - IR::Expr *arg = call->onlyArgument(); - if (arg != 0 && arg->type == IR::RealType) { - traceExpression(arg, currentReg); - - switch (name->builtin) { - case IR::NoBuiltinSymbol: - break; - - case IR::MathSinBultinFunction: { - Instr::MathSinReal i; - i.output = i.src = currentReg; - gen(i); - } return; - - case IR::MathCosBultinFunction: { - Instr::MathCosReal i; - i.output = i.src = currentReg; - gen(i); - } return; - - case IR::MathRoundBultinFunction: { - Instr::MathRoundReal i; - i.output = i.src = currentReg; - gen(i); - } return; - - case IR::MathFloorBultinFunction: { - Instr::MathFloorReal i; - i.output = i.src = currentReg; - gen(i); - } return; - - case IR::MathPIBuiltinConstant: - break; - } // switch - } - } - - if (qmlVerboseCompiler()) - qWarning() << "TODO:" << Q_FUNC_INFO << __LINE__; - discard(); -} - - -// -// statements -// -void QV4CompilerPrivate::visitExp(IR::Exp *s) -{ - traceExpression(s->expr, currentReg); -} - -void QV4CompilerPrivate::visitMove(IR::Move *s) -{ - IR::Temp *target = s->target->asTemp(); - Q_ASSERT(target != 0); - - quint8 dest = target->index; - - if (target->type != s->source->type) { - quint8 src = dest; - - if (IR::Temp *t = s->source->asTemp()) - src = t->index; - else - traceExpression(s->source, dest); - - V4Instr::Type opcode = V4Instr::Noop; - IR::Type targetTy = s->target->type; - IR::Type sourceTy = s->source->type; - - if (sourceTy == IR::UrlType) { - switch (targetTy) { - case IR::BoolType: - case IR::StringType: - // nothing to do. V4 will generate optimized - // url-to-xxx conversions. - break; - default: { - // generate a UrlToString conversion and fix - // the type of the source expression. - V4Instr conv; - conv.unaryop.output = V4Instr::ConvertUrlToString; - conv.unaryop.src = src; - gen(opcode, conv); - - sourceTy = IR::StringType; - break; - } - } // switch - } - - if (targetTy == IR::BoolType) { - switch (sourceTy) { - case IR::IntType: opcode = V4Instr::ConvertIntToBool; break; - case IR::RealType: opcode = V4Instr::ConvertRealToBool; break; - case IR::StringType: opcode = V4Instr::ConvertStringToBool; break; - case IR::UrlType: opcode = V4Instr::ConvertUrlToBool; break; - case IR::ColorType: opcode = V4Instr::ConvertColorToBool; break; - default: break; - } // switch - } else if (targetTy == IR::IntType) { - switch (sourceTy) { - case IR::BoolType: opcode = V4Instr::ConvertBoolToInt; break; - case IR::RealType: { - if (s->isMoveForReturn) - opcode = V4Instr::MathRoundReal; - else - opcode = V4Instr::ConvertRealToInt; - break; - } - case IR::StringType: opcode = V4Instr::ConvertStringToInt; break; - default: break; - } // switch - } else if (targetTy == IR::RealType) { - switch (sourceTy) { - case IR::BoolType: opcode = V4Instr::ConvertBoolToReal; break; - case IR::IntType: opcode = V4Instr::ConvertIntToReal; break; - case IR::StringType: opcode = V4Instr::ConvertStringToReal; break; - default: break; - } // switch - } else if (targetTy == IR::StringType) { - switch (sourceTy) { - case IR::BoolType: opcode = V4Instr::ConvertBoolToString; break; - case IR::IntType: opcode = V4Instr::ConvertIntToString; break; - case IR::RealType: opcode = V4Instr::ConvertRealToString; break; - case IR::UrlType: opcode = V4Instr::ConvertUrlToString; break; - case IR::ColorType: opcode = V4Instr::ConvertColorToString; break; - default: break; - } // switch - } else if (targetTy == IR::UrlType) { - V4Instr convToString; - convToString.unaryop.output = dest; - convToString.unaryop.src = src; - - // try to convert the source expression to a string. - switch (sourceTy) { - case IR::BoolType: gen(V4Instr::ConvertBoolToString, convToString); sourceTy = IR::StringType; break; - case IR::IntType: gen(V4Instr::ConvertIntToString, convToString); sourceTy = IR::StringType; break; - case IR::RealType: gen(V4Instr::ConvertRealToString, convToString); sourceTy = IR::StringType; break; - case IR::ColorType: gen(V4Instr::ConvertColorToString, convToString); sourceTy = IR::StringType; break; - default: break; - } // switch - - if (sourceTy == IR::StringType) - opcode = V4Instr::ConvertStringToUrl; - } else if (targetTy == IR::ColorType) { - switch (sourceTy) { - case IR::StringType: opcode = V4Instr::ConvertStringToColor; break; - default: break; - } // switch - } - if (opcode != V4Instr::Noop) { - V4Instr conv; - conv.unaryop.output = dest; - conv.unaryop.src = src; - gen(opcode, conv); - - if (s->isMoveForReturn && opcode == V4Instr::ConvertStringToUrl) { - V4Instr resolveUrl; - resolveUrl.unaryop.output = dest; - resolveUrl.unaryop.src = dest; - gen(V4Instr::ResolveUrl, resolveUrl); - } - } else { - discard(); - } - } else { - traceExpression(s->source, dest); - } -} - -void QV4CompilerPrivate::visitJump(IR::Jump *s) -{ - patches.append(Patch(s->target, bytecode.size())); - - Instr::Branch i; - i.offset = 0; // ### backpatch - gen(i); -} - -void QV4CompilerPrivate::visitCJump(IR::CJump *s) -{ - traceExpression(s->cond, currentReg); - - patches.append(Patch(s->iftrue, bytecode.size())); - - Instr::BranchTrue i; - i.reg = currentReg; - i.offset = 0; // ### backpatch - gen(i); -} - -void QV4CompilerPrivate::visitRet(IR::Ret *s) -{ - Q_ASSERT(s->expr != 0); - - int storeReg = currentReg; - - if (IR::Temp *temp = s->expr->asTemp()) { - storeReg = temp->index; - } else { - traceExpression(s->expr, storeReg); - } - - if (qmlBindingsTest) { - Instr::TestV4Store test; - test.reg = storeReg; - switch (s->type) { - case IR::StringType: - test.regType = QMetaType::QString; - break; - case IR::UrlType: - test.regType = QMetaType::QUrl; - break; - case IR::ColorType: - test.regType = QMetaType::QColor; - break; - case IR::SGAnchorLineType: - test.regType = QDeclarativeMetaType::QQuickAnchorLineMetaTypeId(); - break; - case IR::ObjectType: - test.regType = QMetaType::QObjectStar; - break; - case IR::BoolType: - test.regType = QMetaType::Bool; - break; - case IR::IntType: - test.regType = QMetaType::Int; - break; - case IR::RealType: - test.regType = QMetaType::QReal; - break; - default: - discard(); - return; - } - gen(test); - } - - Instr::Store store; - store.output = 0; - store.index = expression->property->index; - store.reg = storeReg; - store.exceptionId = exceptionId(s->line, s->column); - gen(store); -} - -void QV4Compiler::dump(const QByteArray &programData) -{ - const QV4Program *program = (const QV4Program *)programData.constData(); - - qWarning() << "Program.bindings:" << program->bindings; - qWarning() << "Program.dataLength:" << program->dataLength; - qWarning() << "Program.subscriptions:" << program->subscriptions; - qWarning() << "Program.indentifiers:" << program->identifiers; - - const int programSize = program->instructionCount; - const char *start = program->instructions(); - const char *end = start + programSize; - Bytecode bc; - bc.dump(start, end); -} - -/*! -Clear the state associated with attempting to compile a specific binding. -This does not clear the global "committed binding" states. -*/ -void QV4CompilerPrivate::resetInstanceState() -{ - data = committed.data; - exceptions = committed.exceptions; - usedSubscriptionIds.clear(); - subscriptionIds = committed.subscriptionIds; - registeredStrings = committed.registeredStrings; - bytecode.clear(); - patches.clear(); - pool.clear(); - currentReg = 0; -} - -/*! -Mark the last compile as successful, and add it to the "committed data" -section. - -Returns the index for the committed binding. -*/ -int QV4CompilerPrivate::commitCompile() -{ - int rv = committed.count(); - committed.offsets << committed.bytecode.count(); - committed.dependencies << usedSubscriptionIds; - committed.bytecode.append(bytecode.constData(), bytecode.size()); - committed.data = data; - committed.exceptions = exceptions; - committed.subscriptionIds = subscriptionIds; - committed.registeredStrings = registeredStrings; - return rv; -} - -bool QV4CompilerPrivate::compile(QDeclarativeJS::AST::Node *node) -{ - resetInstanceState(); - - if (expression->property->type == -1) - return false; - - AST::SourceLocation location; - if (AST::ExpressionNode *astExpression = node->expressionCast()) { - location = astExpression->firstSourceLocation(); - } else if (AST::Statement *astStatement = node->statementCast()) { - if (AST::Block *block = AST::cast<AST::Block *>(astStatement)) - location = block->lbraceToken; - else if (AST::IfStatement *ifStmt = AST::cast<AST::IfStatement *>(astStatement)) - location = ifStmt->ifToken; - else - return false; - } else { - return false; - } - - IR::Function thisFunction(&pool), *function = &thisFunction; - - QV4IRBuilder irBuilder(expression, engine); - if (!irBuilder(function, node)) - return false; - - bool discarded = false; - qSwap(_discarded, discarded); - qSwap(_function, function); - trace(location.startLine, location.startColumn); - qSwap(_function, function); - qSwap(_discarded, discarded); - - if (qmlVerboseCompiler()) { - QTextStream qerr(stderr, QIODevice::WriteOnly); - if (discarded) - qerr << "======== TODO ====== " << endl; - else - qerr << "==================== " << endl; - qerr << "\tline: " << location.startLine - << "\tcolumn: " << location.startColumn - << endl; - foreach (IR::BasicBlock *bb, function->basicBlocks) - bb->dump(qerr); - qerr << endl; - } - - if (discarded || subscriptionIds.count() > 0xFFFF || registeredStrings.count() > 0xFFFF || registerCount > 31) - return false; - - return true; -} - -// Returns a reg -int QV4CompilerPrivate::registerLiteralString(quint8 reg, const QStringRef &str) -{ - // ### string cleanup - - QByteArray strdata((const char *)str.constData(), str.length() * sizeof(QChar)); - int offset = data.count(); - data += strdata; - - Instr::LoadString string; - string.reg = reg; - string.offset = offset; - string.length = str.length(); - gen(string); - - return reg; -} - -// Returns an identifier offset -int QV4CompilerPrivate::registerString(const QString &string) -{ - Q_ASSERT(!string.isEmpty()); - - QPair<int, int> *iter = registeredStrings.value(string); - - if (!iter) { - quint32 len = string.length(); - QByteArray lendata((const char *)&len, sizeof(quint32)); - QByteArray strdata((const char *)string.constData(), string.length() * sizeof(QChar)); - strdata.prepend(lendata); - int rv = data.count(); - data += strdata; - - iter = ®isteredStrings[string]; - *iter = qMakePair(registeredStrings.count(), rv); - } - - Instr::InitString reg; - reg.offset = iter->first; - reg.dataIdx = iter->second; - gen(reg); - return reg.offset; -} - -/*! -Returns true if the current expression has not already subscribed to \a sub in currentBlockMask. -*/ -bool QV4CompilerPrivate::blockNeedsSubscription(const QStringList &sub) -{ - QString str = sub.join(QLatin1String(".")); - - int *iter = subscriptionIds.value(str); - if (!iter) - return true; - - quint32 *uiter = usedSubscriptionIds.value(*iter); - if (!uiter) - return true; - else - return !(*uiter & currentBlockMask); -} - -int QV4CompilerPrivate::subscriptionIndex(const QStringList &sub) -{ - QString str = sub.join(QLatin1String(".")); - int *iter = subscriptionIds.value(str); - if (!iter) { - int count = subscriptionIds.count(); - iter = &subscriptionIds[str]; - *iter = count; - } - quint32 &u = usedSubscriptionIds[*iter]; - if (!(u & currentBlockMask)) { - u |= currentBlockMask; - usedSubscriptionIdsChanged = true; - } - return *iter; -} - -quint32 QV4CompilerPrivate::subscriptionBlockMask(const QStringList &sub) -{ - QString str = sub.join(QLatin1String(".")); - - int *iter = subscriptionIds.value(str); - Q_ASSERT(iter != 0); - - quint32 *uiter = usedSubscriptionIds.value(*iter); - Q_ASSERT(uiter != 0); - - return *uiter; -} - -quint8 QV4CompilerPrivate::exceptionId(quint32 line, quint32 column) -{ - quint8 rv = 0xFF; - if (exceptions.count() < 0xFF) { - rv = (quint8)exceptions.count(); - quint64 e = line; - e <<= 32; - e |= column; - exceptions.append(e); - } - return rv; -} - -quint8 QV4CompilerPrivate::exceptionId(QDeclarativeJS::AST::ExpressionNode *n) -{ - quint8 rv = 0xFF; - if (n && exceptions.count() < 0xFF) { - QDeclarativeJS::AST::SourceLocation l = n->firstSourceLocation(); - rv = exceptionId(l.startLine, l.startColumn); - } - return rv; -} - -QV4Compiler::QV4Compiler() -: d(new QV4CompilerPrivate) -{ - qmlBindingsTest |= qmlBindingsTestEnv(); -} - -QV4Compiler::~QV4Compiler() -{ - delete d; d = 0; -} - -/* -Returns true if any bindings were compiled. -*/ -bool QV4Compiler::isValid() const -{ - return !d->committed.bytecode.isEmpty(); -} - -/* --1 on failure, otherwise the binding index to use. -*/ -int QV4Compiler::compile(const Expression &expression, QDeclarativeEnginePrivate *engine) -{ - if (!expression.expression.asAST()) return false; - - if (!qmlExperimental() && expression.property->isValueTypeSubProperty) - return -1; - - if (qmlDisableOptimizer() || !qmlEnableV4) - return -1; - - d->expression = &expression; - d->engine = engine; - - if (d->compile(expression.expression.asAST())) { - return d->commitCompile(); - } else { - return -1; - } -} - -QByteArray QV4CompilerPrivate::buildSignalTable() const -{ - QHash<int, QList<QPair<int, quint32> > > table; - - for (int ii = 0; ii < committed.count(); ++ii) { - const QDeclarativeAssociationList<int, quint32> &deps = committed.dependencies.at(ii); - for (QDeclarativeAssociationList<int, quint32>::const_iterator iter = deps.begin(); iter != deps.end(); ++iter) - table[iter->first].append(qMakePair(ii, iter->second)); - } - - QVector<quint32> header; - QVector<quint32> data; - for (int ii = 0; ii < committed.subscriptionIds.count(); ++ii) { - header.append(committed.subscriptionIds.count() + data.count()); - const QList<QPair<int, quint32> > &bindings = table[ii]; - data.append(bindings.count()); - for (int jj = 0; jj < bindings.count(); ++jj) { - data.append(bindings.at(jj).first); - data.append(bindings.at(jj).second); - } - } - header << data; - - return QByteArray((const char *)header.constData(), header.count() * sizeof(quint32)); -} - -QByteArray QV4CompilerPrivate::buildExceptionData() const -{ - QByteArray rv; - rv.resize(committed.exceptions.count() * sizeof(quint64)); - ::memcpy(rv.data(), committed.exceptions.constData(), rv.size()); - return rv; -} - -/* -Returns the compiled program. -*/ -QByteArray QV4Compiler::program() const -{ - QByteArray programData; - - if (isValid()) { - QV4Program prog; - prog.bindings = d->committed.count(); - - Bytecode bc; - QV4CompilerPrivate::Instr::Jump jump; - jump.reg = -1; - - for (int ii = 0; ii < d->committed.count(); ++ii) { - jump.count = d->committed.count() - ii - 1; - jump.count*= V4InstrMeta<V4Instr::Jump>::Size; - jump.count+= d->committed.offsets.at(ii); - bc.append(jump); - } - - - QByteArray bytecode; - bytecode.reserve(bc.size() + d->committed.bytecode.size()); - bytecode.append(bc.constData(), bc.size()); - bytecode.append(d->committed.bytecode.constData(), d->committed.bytecode.size()); - - QByteArray data = d->committed.data; - while (data.count() % 4) data.append('\0'); - prog.signalTableOffset = data.count(); - data += d->buildSignalTable(); - while (data.count() % 4) data.append('\0'); - prog.exceptionDataOffset = data.count(); - data += d->buildExceptionData(); - - prog.dataLength = 4 * ((data.size() + 3) / 4); - prog.subscriptions = d->committed.subscriptionIds.count(); - prog.identifiers = d->committed.registeredStrings.count(); - prog.instructionCount = bytecode.count(); - int size = sizeof(QV4Program) + bytecode.count(); - size += prog.dataLength; - - programData.resize(size); - memcpy(programData.data(), &prog, sizeof(QV4Program)); - if (prog.dataLength) - memcpy((char *)((QV4Program *)programData.data())->data(), data.constData(), - data.size()); - memcpy((char *)((QV4Program *)programData.data())->instructions(), bytecode.constData(), - bytecode.count()); - } - - if (bindingsDump()) { - qWarning().nospace() << "Subscription slots:"; - - for (QDeclarativeAssociationList<QString, int>::ConstIterator iter = d->committed.subscriptionIds.begin(); - iter != d->committed.subscriptionIds.end(); - ++iter) { - qWarning().nospace() << " " << iter->first << "\t-> " << iter->second; - } - - QV4Compiler::dump(programData); - } - - return programData; -} - -void QV4Compiler::enableBindingsTest(bool e) -{ - if (e) - qmlBindingsTest = true; - else - qmlBindingsTest = qmlBindingsTestEnv(); -} - -void QV4Compiler::enableV4(bool e) -{ - qmlEnableV4 = e; -} - -QT_END_NAMESPACE |