+/* Cycript - Optimizing JavaScript Compiler/Runtime
+ * Copyright (C) 2009-2012 Jay Freeman (saurik)
+*/
+
+/* GNU Lesser General Public License, Version 3 {{{ */
+/*
+ * Cycript is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Cycript 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 Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Cycript. If not, see <http://www.gnu.org/licenses/>.
+**/
+/* }}} */
+
#include "Parser.hpp"
+#include "Replace.hpp"
#include <iomanip>
-#include "Replace.hpp"
+CYFunctionExpression *CYNonLocalize(CYContext &context, CYFunctionExpression *function) {
+ function->nonlocal_ = context.nextlocal_;
+ return function;
+}
+
+CYExpression *CYAdd::Replace(CYContext &context) {
+ CYInfix::Replace(context);
+
+ CYExpression *lhp(lhs_->Primitive(context));
+ CYExpression *rhp(rhs_->Primitive(context));
+
+ CYString *lhs(dynamic_cast<CYString *>(lhp));
+ CYString *rhs(dynamic_cast<CYString *>(rhp));
+
+ if (lhs != NULL || rhs != NULL) {
+ if (lhs == NULL) {
+ lhs = lhp->String(context);
+ if (lhs == NULL)
+ return this;
+ } else if (rhs == NULL) {
+ rhs = rhp->String(context);
+ if (rhs == NULL)
+ return this;
+ }
+
+ return lhs->Concat(context, rhs);
+ }
+
+ if (CYNumber *lhn = lhp->Number(context))
+ if (CYNumber *rhn = rhp->Number(context))
+ return $D(lhn->Value() + rhn->Value());
+
+ return this;
+}
CYExpression *CYAddressOf::Replace(CYContext &context) {
- CYPrefix::Replace(context);
return $C0($M(rhs_, $S("$cya")));
}
-void CYArgument::Replace(CYContext &context) { $T()
+CYArgument *CYArgument::Replace(CYContext &context) { $T(NULL)
context.Replace(value_);
- next_->Replace(context);
+ next_ = next_->Replace(context);
+
+ if (value_ == NULL) {
+ if (next_ == NULL)
+ return NULL;
+ else
+ value_ = $U;
+ }
+
+ return this;
}
CYExpression *CYArray::Replace(CYContext &context) {
elements_->Replace(context);
- return NULL;
+ return this;
}
CYExpression *CYArrayComprehension::Replace(CYContext &context) {
CYVariable *cyv($V("$cyv"));
- return $C0($F(NULL, $P1("$cyv", comprehensions_->Parameters(context)), $$->*
+ return $C0($F(NULL, $P1($L("$cyv"), comprehensions_->Parameters(context)), $$->*
$E($ CYAssign(cyv, $ CYArray()))->*
comprehensions_->Replace(context, $E($C1($M(cyv, $S("push")), expression_)))->*
$ CYReturn(cyv)
CYExpression *CYAssignment::Replace(CYContext &context) {
context.Replace(lhs_);
context.Replace(rhs_);
- return NULL;
+ return this;
}
CYStatement *CYBlock::Replace(CYContext &context) {
- statements_ = statements_->ReplaceAll(context);
- return NULL;
+ context.ReplaceAll(statements_);
+ if (statements_ == NULL)
+ return $ CYEmpty();
+ return this;
}
CYStatement *CYBreak::Replace(CYContext &context) {
- return NULL;
+ return this;
+}
+
+CYExpression *CYCall::AddArgument(CYContext &context, CYExpression *value) {
+ CYArgument **argument(&arguments_);
+ while (*argument != NULL)
+ argument = &(*argument)->next_;
+ *argument = $ CYArgument(value);
+ return this;
}
CYExpression *CYCall::Replace(CYContext &context) {
context.Replace(function_);
arguments_->Replace(context);
- return NULL;
+ return this;
}
-void CYCatch::Replace(CYContext &context) { $T()
+namespace cy {
+namespace Syntax {
+
+void Catch::Replace(CYContext &context) { $T()
+ CYScope scope(true, context, code_.statements_);
+
+ context.Replace(name_);
+ context.scope_->Declare(context, name_, CYIdentifierCatch);
+
code_.Replace(context);
+ scope.Close();
}
+} }
+
void CYClause::Replace(CYContext &context) { $T()
context.Replace(case_);
- statements_ = statements_->ReplaceAll(context);
+ context.ReplaceAll(statements_);
next_->Replace(context);
}
+CYStatement *CYComment::Replace(CYContext &context) {
+ return this;
+}
+
CYExpression *CYCompound::Replace(CYContext &context) {
- expressions_ = expressions_->ReplaceAll(context);
- return NULL;
+ context.ReplaceAll(expressions_);
+ if (expressions_ == NULL)
+ return NULL;
+ return this;
+}
+
+CYExpression *CYCompound::Primitive(CYContext &context) {
+ CYExpression *expression(expressions_);
+ if (expression == NULL)
+ return NULL;
+ while (expression->next_ != NULL)
+ expression = expression->next_;
+ return expression->Primitive(context);
}
CYFunctionParameter *CYComprehension::Parameters(CYContext &context) const { $T(NULL)
context.Replace(test_);
context.Replace(true_);
context.Replace(false_);
- return NULL;
+ return this;
+}
+
+void CYContext::NonLocal(CYStatement *&statements) {
+ CYContext &context(*this);
+
+ if (nextlocal_ != NULL && nextlocal_->identifier_ != NULL) {
+ CYIdentifier *cye($I("$cye")->Replace(context));
+ CYIdentifier *unique(nextlocal_->identifier_->Replace(context));
+
+ CYStatement *declare(
+ $ CYVar($L1($ CYDeclaration(unique, $ CYObject()))));
+
+ cy::Syntax::Catch *rescue(
+ $ cy::Syntax::Catch(cye, $$->*
+ $ CYIf($ CYIdentical($M($V(cye), $S("$cyk")), $V(unique)), $$->*
+ $ CYReturn($M($V(cye), $S("$cyv"))))->*
+ $ cy::Syntax::Throw($V(cye))));
+
+ context.Replace(declare);
+ rescue->Replace(context);
+
+ statements = $$->*
+ declare->*
+ $ cy::Syntax::Try(statements, rescue, NULL);
+ }
+}
+
+CYIdentifier *CYContext::Unique() {
+ return $ CYIdentifier(apr_psprintf($pool, "$cy%u", unique_++));
}
CYStatement *CYContinue::Replace(CYContext &context) {
- return NULL;
+ return this;
}
-CYExpression *CYDeclaration::ForEachIn(CYContext &context) {
- return $ CYVariable(identifier_);
+CYStatement *CYDebugger::Replace(CYContext &context) {
+ return this;
}
-void CYDeclaration::Replace(CYContext &context) {
- context.Replace(initialiser_);
+CYAssignment *CYDeclaration::Assignment(CYContext &context) {
+ if (initialiser_ == NULL)
+ return NULL;
+
+ CYAssignment *value($ CYAssign(Variable(context), initialiser_));
+ initialiser_ = NULL;
+ return value;
+}
+
+CYVariable *CYDeclaration::Variable(CYContext &context) {
+ return $V(identifier_);
+}
+
+CYStatement *CYDeclaration::ForEachIn(CYContext &context, CYExpression *value) {
+ return $ CYVar($L1($ CYDeclaration(identifier_, value)));
+}
+
+CYExpression *CYDeclaration::Replace(CYContext &context) {
+ context.Replace(identifier_);
+ context.scope_->Declare(context, identifier_, CYIdentifierVariable);
+ return Variable(context);
}
void CYDeclarations::Replace(CYContext &context) { $T()
next_->Replace(context);
}
+CYProperty *CYDeclarations::Property(CYContext &context) { $T(NULL)
+ return $ CYProperty(declaration_->identifier_, declaration_->initialiser_, next_->Property(context));
+}
+
+CYFunctionParameter *CYDeclarations::Parameter(CYContext &context) { $T(NULL)
+ return $ CYFunctionParameter($ CYDeclaration(declaration_->identifier_), next_->Parameter(context));
+}
+
+CYArgument *CYDeclarations::Argument(CYContext &context) { $T(NULL)
+ return $ CYArgument(declaration_->initialiser_, next_->Argument(context));
+}
+
+CYCompound *CYDeclarations::Compound(CYContext &context) { $T(NULL)
+ CYCompound *compound(next_->Compound(context) ?: $ CYCompound());
+ if (CYAssignment *assignment = declaration_->Assignment(context))
+ compound->AddPrev(assignment);
+ return compound;
+}
+
CYExpression *CYDirectMember::Replace(CYContext &context) {
- Replace_(context);
- return NULL;
+ context.Replace(object_);
+ context.Replace(property_);
+ return this;
}
CYStatement *CYDoWhile::Replace(CYContext &context) {
context.Replace(test_);
context.Replace(code_);
- return NULL;
+ return this;
}
void CYElement::Replace(CYContext &context) { $T()
}
CYStatement *CYExpress::Replace(CYContext &context) {
+ while (CYExpress *express = dynamic_cast<CYExpress *>(next_)) {
+ CYCompound *compound(dynamic_cast<CYCompound *>(express->expression_));
+ if (compound == NULL)
+ compound = $ CYCompound(express->expression_);
+ compound->AddPrev(expression_);
+ expression_ = compound;
+ SetNext(express->next_);
+ }
+
context.Replace(expression_);
- return NULL;
+ if (expression_ == NULL)
+ return $ CYEmpty();
+
+ return this;
+}
+
+CYExpression *CYExpression::AddArgument(CYContext &context, CYExpression *value) {
+ return $C1(this, value);
}
CYExpression *CYExpression::ClassName(CYContext &context, bool object) {
return this;
}
-CYExpression *CYExpression::ForEachIn(CYContext &context) {
- return this;
+CYStatement *CYExpression::ForEachIn(CYContext &context, CYExpression *value) {
+ return $E($ CYAssign(this, value));
}
-CYExpression *CYExpression::ReplaceAll(CYContext &context) { $T(NULL)
- CYExpression *replace(this);
- context.Replace(replace);
+CYAssignment *CYExpression::Assignment(CYContext &context) {
+ return NULL;
+}
- if (CYExpression *next = next_->ReplaceAll(context))
- replace->SetNext(next);
- else
- replace->SetNext(next_);
+CYNumber *CYFalse::Number(CYContext &context) {
+ return $D(0);
+}
+
+CYString *CYFalse::String(CYContext &context) {
+ return $S("false");
+}
- return replace;
+CYExpression *CYFatArrow::Replace(CYContext &context) {
+ CYFunctionExpression *function($ CYFunctionExpression(NULL, parameters_, code_));
+ function->this_.SetNext(context.this_);
+ return function;
}
void CYFinally::Replace(CYContext &context) { $T()
}
CYStatement *CYFor::Replace(CYContext &context) {
- // XXX: initialiser_
+ context.Replace(initialiser_);
context.Replace(test_);
context.Replace(increment_);
context.Replace(code_);
- return NULL;
+ return this;
+}
+
+CYCompound *CYForDeclarations::Replace(CYContext &context) {
+ declarations_->Replace(context);
+ return declarations_->Compound(context);
}
+// XXX: this still feels highly suboptimal
CYStatement *CYForIn::Replace(CYContext &context) {
- // XXX: initialiser_
+ if (CYAssignment *assignment = initialiser_->Assignment(context))
+ return $ CYBlock($$->*
+ $E(assignment)->*
+ this
+ );
+
+ context.Replace(initialiser_);
context.Replace(set_);
context.Replace(code_);
- return NULL;
+ return this;
}
CYFunctionParameter *CYForInComprehension::Parameter(CYContext &context) const {
- return $ CYFunctionParameter(name_);
+ return $ CYFunctionParameter($ CYDeclaration(name_));
}
CYStatement *CYForInComprehension::Replace(CYContext &context, CYStatement *statement) const {
- return $ CYForIn($ CYVariable(name_), set_, CYComprehension::Replace(context, statement));
+ return $ CYForIn($V(name_), set_, CYComprehension::Replace(context, statement));
}
-CYStatement *CYForEachIn::Replace(CYContext &context) {
- CYVariable *cys($V("$cys")), *cyt($V("$cyt"));
+CYStatement *CYForOf::Replace(CYContext &context) {
+ if (CYAssignment *assignment = initialiser_->Assignment(context))
+ return $ CYBlock($$->*
+ $E(assignment)->*
+ this
+ );
+
+ CYIdentifier *cys($I("$cys")), *cyt($I("$cyt"));
- return $ CYWith($ CYObject($ CYProperty($S("$cys"), $D(0), $ CYProperty($S("$cyt"), $D(0)))), $ CYBlock($$->*
- $E($ CYAssign(cys, set_))->*
- $ CYForIn(cyt, cys, $ CYBlock($$->*
- $E($ CYAssign(initialiser_->ForEachIn(context), $M(cys, cyt)))->*
+ return $ CYLetStatement($L2($ CYDeclaration(cys, set_), $ CYDeclaration(cyt)), $$->*
+ $ CYForIn($V(cyt), $V(cys), $ CYBlock($$->*
+ initialiser_->ForEachIn(context, $M($V(cys), $V(cyt)))->*
code_
))
- ));
+ );
}
-CYFunctionParameter *CYForEachInComprehension::Parameter(CYContext &context) const {
- return $ CYFunctionParameter(name_);
+CYFunctionParameter *CYForOfComprehension::Parameter(CYContext &context) const {
+ return $ CYFunctionParameter($ CYDeclaration(name_));
}
-CYStatement *CYForEachInComprehension::Replace(CYContext &context, CYStatement *statement) const {
- CYVariable *cys($V("$cys")), *name($ CYVariable(name_));
+CYStatement *CYForOfComprehension::Replace(CYContext &context, CYStatement *statement) const {
+ CYIdentifier *cys($I("cys"));
- return $E($C0($F(NULL, $P1("$cys"), $$->*
- $E($ CYAssign(cys, set_))->*
- $ CYForIn(name, cys, $ CYBlock($$->*
- $E($ CYAssign(name, $M(cys, name)))->*
+ return $E($C0($F(NULL, $P1($L("$cys")), $$->*
+ $E($ CYAssign($V(cys), set_))->*
+ $ CYForIn($V(name_), $V(cys), $ CYBlock($$->*
+ $E($ CYAssign($V(name_), $M($V(cys), $V(name_))))->*
CYComprehension::Replace(context, statement)
))
)));
}
-void CYFunction::Replace_(CYContext &context) {
+void CYFunction::Inject(CYContext &context) {
+ context.Replace(name_);
+ context.scope_->Declare(context, name_, CYIdentifierOther);
+}
+
+void CYFunction::Replace_(CYContext &context, bool outer) {
+ if (outer)
+ Inject(context);
+
+ CYThisScope *_this(context.this_);
+ context.this_ = CYGetLast(&this_);
+
+ CYNonLocal *nonlocal(context.nonlocal_);
+ CYNonLocal *nextlocal(context.nextlocal_);
+
+ bool localize;
+ if (nonlocal_ != NULL) {
+ localize = false;
+ context.nonlocal_ = nonlocal_;
+ } else {
+ localize = true;
+ nonlocal_ = $ CYNonLocal();
+ context.nextlocal_ = nonlocal_;
+ }
+
+ CYScope scope(!localize, context, code_.statements_);
+
+ if (!outer && name_ != NULL)
+ Inject(context);
+
+ parameters_->Replace(context, code_);
code_.Replace(context);
+
+ if (CYIdentifier *identifier = this_.identifier_)
+ code_.statements_ = $$->*
+ $ CYVar($L1($ CYDeclaration(identifier, $ CYThis())))->*
+ code_.statements_;
+
+ if (localize)
+ context.NonLocal(code_.statements_);
+
+ context.nextlocal_ = nextlocal;
+ context.nonlocal_ = nonlocal;
+
+ context.this_ = _this;
+
+ scope.Close();
}
CYExpression *CYFunctionExpression::Replace(CYContext &context) {
- Replace_(context);
- return NULL;
+ Replace_(context, false);
+ return this;
+}
+
+void CYFunctionParameter::Replace(CYContext &context, CYBlock &code) { $T()
+ CYAssignment *assignment(initialiser_->Assignment(context));
+ context.Replace(initialiser_);
+
+ next_->Replace(context, code);
+
+ if (assignment != NULL)
+ // XXX: this cast is quite incorrect
+ code.AddPrev($ CYIf($ CYIdentical($ CYTypeOf(dynamic_cast<CYExpression *>(initialiser_)), $S("undefined")), $$->*
+ $E(assignment)
+ ));
}
CYStatement *CYFunctionStatement::Replace(CYContext &context) {
- Replace_(context);
- return NULL;
+ Replace_(context, true);
+ return this;
+}
+
+CYIdentifier *CYIdentifier::Replace(CYContext &context) {
+ if (replace_ != NULL && replace_ != this)
+ return replace_->Replace(context);
+ replace_ = context.scope_->Lookup(context, this);
+ return replace_;
}
CYStatement *CYIf::Replace(CYContext &context) {
context.Replace(test_);
context.Replace(true_);
context.Replace(false_);
- return NULL;
+ return this;
}
CYFunctionParameter *CYIfComprehension::Parameter(CYContext &context) const {
}
CYExpression *CYIndirect::Replace(CYContext &context) {
- CYPrefix::Replace(context);
return $M(rhs_, $S("$cyi"));
}
CYExpression *CYIndirectMember::Replace(CYContext &context) {
- Replace_(context);
return $M($ CYIndirect(object_), property_);
}
CYExpression *CYInfix::Replace(CYContext &context) {
context.Replace(lhs_);
context.Replace(rhs_);
- return NULL;
+ return this;
}
CYStatement *CYLabel::Replace(CYContext &context) {
context.Replace(statement_);
- return NULL;
+ return this;
}
-void CYMember::Replace_(CYContext &context) {
- context.Replace(object_);
- context.Replace(property_);
+CYStatement *CYLetStatement::Replace(CYContext &context) {
+ return $E($ CYCall(CYNonLocalize(context, $ CYFunctionExpression(NULL, declarations_->Parameter(context), code_)), declarations_->Argument(context)));
+}
+
+namespace cy {
+namespace Syntax {
+
+CYExpression *New::AddArgument(CYContext &context, CYExpression *value) {
+ CYSetLast(arguments_) = $ CYArgument(value);
+ return this;
}
-CYExpression *CYNew::Replace(CYContext &context) {
+CYExpression *New::Replace(CYContext &context) {
context.Replace(constructor_);
arguments_->Replace(context);
- return NULL;
+ return this;
+}
+
+} }
+
+CYNumber *CYNull::Number(CYContext &context) {
+ return $D(0);
+}
+
+CYString *CYNull::String(CYContext &context) {
+ return $S("null");
+}
+
+CYNumber *CYNumber::Number(CYContext &context) {
+ return this;
+}
+
+CYString *CYNumber::String(CYContext &context) {
+ // XXX: there is a precise algorithm for this
+ return $S(apr_psprintf($pool, "%.17g", Value()));
}
CYExpression *CYObject::Replace(CYContext &context) {
properties_->Replace(context);
- return NULL;
+ return this;
}
CYExpression *CYPostfix::Replace(CYContext &context) {
context.Replace(lhs_);
- return NULL;
+ return this;
}
CYExpression *CYPrefix::Replace(CYContext &context) {
context.Replace(rhs_);
- return NULL;
+ return this;
+}
+
+// XXX: this is evil evil black magic. don't ask, don't tell... don't believe!
+#define MappingSet "0etnirsoalfucdphmgyvbxTwSNECAFjDLkMOIBPqzRH$_WXUVGYKQJZ"
+//#define MappingSet "0abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_"
+
+namespace {
+ struct IdentifierUsageLess :
+ std::binary_function<CYIdentifier *, CYIdentifier *, bool>
+ {
+ _finline bool operator ()(CYIdentifier *lhs, CYIdentifier *rhs) const {
+ if (lhs->usage_ != rhs->usage_)
+ return lhs->usage_ > rhs->usage_;
+ return lhs < rhs;
+ }
+ };
+
+ typedef std::set<CYIdentifier *, IdentifierUsageLess> IdentifierUsages;
}
void CYProgram::Replace(CYContext &context) {
- statements_ = statements_->ReplaceAll(context);
+ CYScope scope(true, context, statements_);
+
+ context.nextlocal_ = $ CYNonLocal();
+ context.ReplaceAll(statements_);
+ context.NonLocal(statements_);
+
+ scope.Close();
+
+ size_t offset(0);
+
+ CYCStringSet external;
+ for (CYIdentifierValueSet::const_iterator i(scope.identifiers_.begin()); i != scope.identifiers_.end(); ++i)
+ external.insert((*i)->Word());
+
+ IdentifierUsages usages;
+
+ if (offset < context.rename_.size())
+ CYForEach (i, context.rename_[offset].identifier_)
+ usages.insert(i);
+
+ // XXX: totalling the probable occurrences and sorting by them would improve the result
+ for (CYIdentifierUsageVector::const_iterator i(context.rename_.begin()); i != context.rename_.end(); ++i, ++offset) {
+ //std::cout << *i << ":" << (*i)->offset_ << std::endl;
+
+ const char *name;
+
+ if (context.options_.verbose_)
+ name = apr_psprintf($pool, "$%"APR_SIZE_T_FMT"", offset);
+ else {
+ char id[8];
+ id[7] = '\0';
+
+ id:
+ unsigned position(7), local(offset + 1);
+
+ do {
+ unsigned index(local % (sizeof(MappingSet) - 1));
+ local /= sizeof(MappingSet) - 1;
+ id[--position] = MappingSet[index];
+ } while (local != 0);
+
+ if (external.find(id + position) != external.end()) {
+ ++offset;
+ goto id;
+ }
+
+ name = apr_pstrmemdup($pool, id + position, 7 - position);
+ // XXX: at some point, this could become a keyword
+ }
+
+ CYForEach (identifier, i->identifier_)
+ identifier->Set(name);
+ }
}
void CYProperty::Replace(CYContext &context) { $T()
context.Replace(value_);
next_->Replace(context);
+ if (value_ == NULL)
+ value_ = $U;
}
CYStatement *CYReturn::Replace(CYContext &context) {
+ if (context.nonlocal_ != NULL) {
+ CYProperty *value(value_ == NULL ? NULL : $ CYProperty($S("$cyv"), value_));
+ return $ cy::Syntax::Throw($ CYObject(
+ $ CYProperty($S("$cyk"), $V(context.nonlocal_->Target(context)), value)
+ ));
+ }
+
context.Replace(value_);
- return NULL;
+ return this;
}
-CYStatement *CYStatement::ReplaceAll(CYContext &context) { $T(NULL)
- CYStatement *replace(this);
- context.Replace(replace);
+CYExpression *CYRubyBlock::Replace(CYContext &context) {
+ // XXX: this needs to do something much more epic to handle return
+ return call_->AddArgument(context, proc_->Replace(context));
+}
- if (CYStatement *next = next_->ReplaceAll(context))
- replace->SetNext(next);
- else
- replace->SetNext(next_);
+CYExpression *CYRubyProc::Replace(CYContext &context) {
+ return CYNonLocalize(context, $ CYFunctionExpression(NULL, parameters_, code_));
+}
- return replace;
+CYScope::CYScope(bool transparent, CYContext &context, CYStatement *&statements) :
+ transparent_(transparent),
+ context_(context),
+ statements_(statements),
+ parent_(context.scope_)
+{
+ context_.scope_ = this;
+}
+
+CYScope::~CYScope() {
+}
+
+void CYScope::Close() {
+ context_.scope_ = parent_;
+ Scope(context_, statements_);
+}
+
+void CYScope::Declare(CYContext &context, CYIdentifier *identifier, CYIdentifierFlags flags) {
+ if (!transparent_ || flags == CYIdentifierArgument || flags == CYIdentifierCatch)
+ internal_.insert(CYIdentifierAddressFlagsMap::value_type(identifier, flags));
+ else if (parent_ != NULL)
+ parent_->Declare(context, identifier, flags);
+}
+
+CYIdentifier *CYScope::Lookup(CYContext &context, CYIdentifier *identifier) {
+ std::pair<CYIdentifierValueSet::iterator, bool> insert(identifiers_.insert(identifier));
+ return *insert.first;
+}
+
+void CYScope::Merge(CYContext &context, CYIdentifier *identifier) {
+ std::pair<CYIdentifierValueSet::iterator, bool> insert(identifiers_.insert(identifier));
+ if (!insert.second) {
+ if ((*insert.first)->offset_ < identifier->offset_)
+ (*insert.first)->offset_ = identifier->offset_;
+ identifier->replace_ = *insert.first;
+ (*insert.first)->usage_ += identifier->usage_ + 1;
+ }
+}
+
+namespace {
+ struct IdentifierOffset {
+ size_t offset_;
+ CYIdentifierFlags flags_;
+ size_t usage_;
+ CYIdentifier *identifier_;
+
+ IdentifierOffset(CYIdentifier *identifier, CYIdentifierFlags flags) :
+ offset_(identifier->offset_),
+ flags_(flags),
+ usage_(identifier->usage_),
+ identifier_(identifier)
+ {
+ }
+ };
+
+ struct IdentifierOffsetLess :
+ std::binary_function<const IdentifierOffset &, const IdentifierOffset &, bool>
+ {
+ _finline bool operator ()(const IdentifierOffset &lhs, const IdentifierOffset &rhs) const {
+ if (lhs.offset_ != rhs.offset_)
+ return lhs.offset_ < rhs.offset_;
+ if (lhs.flags_ != rhs.flags_)
+ return lhs.flags_ < rhs.flags_;
+ /*if (lhs.usage_ != rhs.usage_)
+ return lhs.usage_ < rhs.usage_;*/
+ return lhs.identifier_ < rhs.identifier_;
+ }
+ };
+
+ typedef std::set<IdentifierOffset, IdentifierOffsetLess> IdentifierOffsets;
+}
+
+void CYScope::Scope(CYContext &context, CYStatement *&statements) {
+ if (parent_ == NULL)
+ return;
+
+ CYDeclarations *last(NULL), *curr(NULL);
+
+ IdentifierOffsets offsets;
+
+ for (CYIdentifierAddressFlagsMap::const_iterator i(internal_.begin()); i != internal_.end(); ++i)
+ if (i->second != CYIdentifierMagic)
+ offsets.insert(IdentifierOffset(i->first, i->second));
+
+ size_t offset(0);
+
+ for (IdentifierOffsets::const_iterator i(offsets.begin()); i != offsets.end(); ++i) {
+ if (i->flags_ == CYIdentifierVariable) {
+ CYDeclarations *next($ CYDeclarations($ CYDeclaration(i->identifier_)));
+ if (last == NULL)
+ last = next;
+ if (curr != NULL)
+ curr->SetNext(next);
+ curr = next;
+ }
+
+ if (offset < i->offset_)
+ offset = i->offset_;
+ if (context.rename_.size() <= offset)
+ context.rename_.resize(offset + 1);
+
+ CYIdentifierUsage &rename(context.rename_[offset++]);
+ i->identifier_->SetNext(rename.identifier_);
+ rename.identifier_ = i->identifier_;
+ rename.usage_ += i->identifier_->usage_ + 1;
+ }
+
+ if (last != NULL) {
+ CYVar *var($ CYVar(last));
+ var->SetNext(statements);
+ statements = var;
+ }
+
+ for (CYIdentifierValueSet::const_iterator i(identifiers_.begin()); i != identifiers_.end(); ++i)
+ if (internal_.find(*i) == internal_.end()) {
+ //std::cout << *i << '=' << offset << std::endl;
+ if ((*i)->offset_ < offset)
+ (*i)->offset_ = offset;
+ parent_->Merge(context, *i);
+ }
+}
+
+CYString *CYString::Concat(CYContext &context, CYString *rhs) const {
+ size_t size(size_ + rhs->size_);
+ char *value($ char[size + 1]);
+ memcpy(value, value_, size_);
+ memcpy(value + size_, rhs->value_, rhs->size_);
+ value[size] = '\0';
+ return $S(value, size);
+}
+
+CYNumber *CYString::Number(CYContext &context) {
+ // XXX: there is a precise algorithm for this
+ return NULL;
+}
+
+CYString *CYString::String(CYContext &context) {
+ return this;
}
CYStatement *CYSwitch::Replace(CYContext &context) {
context.Replace(value_);
clauses_->Replace(context);
- return NULL;
+ return this;
}
CYExpression *CYThis::Replace(CYContext &context) {
- return NULL;
+ if (context.this_ != NULL)
+ return $V(context.this_->Identifier(context));
+ return this;
}
-CYStatement *CYThrow::Replace(CYContext &context) {
+namespace cy {
+namespace Syntax {
+
+CYStatement *Throw::Replace(CYContext &context) {
context.Replace(value_);
- return NULL;
+ return this;
}
+} }
+
CYExpression *CYTrivial::Replace(CYContext &context) {
- return NULL;
+ return this;
+}
+
+CYNumber *CYTrue::Number(CYContext &context) {
+ return $D(1);
+}
+
+CYString *CYTrue::String(CYContext &context) {
+ return $S("true");
}
-CYStatement *CYTry::Replace(CYContext &context) {
+namespace cy {
+namespace Syntax {
+
+CYStatement *Try::Replace(CYContext &context) {
code_.Replace(context);
catch_->Replace(context);
finally_->Replace(context);
- return NULL;
+ return this;
}
+} }
+
CYStatement *CYVar::Replace(CYContext &context) {
declarations_->Replace(context);
- return NULL;
+ return $E(declarations_->Compound(context));
}
CYExpression *CYVariable::Replace(CYContext &context) {
- return NULL;
+ context.Replace(name_);
+ return this;
}
CYStatement *CYWhile::Replace(CYContext &context) {
context.Replace(test_);
context.Replace(code_);
- return NULL;
+ return this;
}
CYStatement *CYWith::Replace(CYContext &context) {
context.Replace(scope_);
context.Replace(code_);
- return NULL;
+ return this;
}
CYExpression *CYWord::ClassName(CYContext &context, bool object) {
projects / cycript.git / blobdiff