X-Git-Url: https://git.saurik.com/cycript.git/blobdiff_plain/62014ea9ffc6c31f053863a89d783475a3937d74..f33b048af6516bdeff373d3eb709f3d445233dc4:/Parser.hpp diff --git a/Parser.hpp b/Parser.hpp index b848c7b..365d1a5 100644 --- a/Parser.hpp +++ b/Parser.hpp @@ -1,3 +1,42 @@ +/* Cycript - Remove Execution Server and Disassembler + * Copyright (C) 2009 Jay Freeman (saurik) +*/ + +/* Modified BSD License {{{ */ +/* + * Redistribution and use in source and binary + * forms, with or without modification, are permitted + * provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the + * above copyright notice, this list of conditions + * and the following disclaimer. + * 2. Redistributions in binary form must reproduce the + * above copyright notice, this list of conditions + * and the following disclaimer in the documentation + * and/or other materials provided with the + * distribution. + * 3. The name of the author may not be used to endorse + * or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ +/* }}} */ + #ifndef CYPARSER_HPP #define CYPARSER_HPP @@ -36,10 +75,6 @@ _finline std::ostream &operator <<(std::ostream &out, const CYThing &rhs) { return out; } -struct CYPart { - virtual void Part(std::ostream &out) const = 0; -}; - struct CYSource : CYNext { @@ -143,6 +178,10 @@ class CYDriver { ~CYDriver(); }; +struct CYPart { + virtual void Part(std::ostream &out) const = 0; +}; + struct CYForInitialiser : CYPart { @@ -153,24 +192,73 @@ struct CYForInInitialiser : { }; +enum CYFlags { + CYNoFlags = 0, + CYNoBrace = (1 << 0), + CYNoFunction = (1 << 1), + CYNoLeader = (1 << 2), + CYNoTrailer = (1 << 3), + CYNoIn = (1 << 4), +}; + struct CYExpression : CYNext, CYForInitialiser, CYForInInitialiser { + virtual unsigned Precedence() const = 0; virtual void Part(std::ostream &out) const; - virtual void Output(std::ostream &out) const = 0; - void Output(std::ostream &out, bool raw) const; + virtual void Output(std::ostream &out, CYFlags flags) const = 0; + void Output(std::ostream &out, unsigned precedence, CYFlags flags) const; + + virtual const char *Word() const { + return NULL; + } }; -_finline std::ostream &operator <<(std::ostream &out, const CYExpression &rhs) { - rhs.Output(out, false); - return out; -} +#define CYAlphabetic(value) \ + virtual bool Alphabetic() const { \ + return value; \ + } + +#define CYPrecedence(value) \ + virtual unsigned Precedence() const { \ + return value; \ + } + +struct CYCompound : + CYExpression +{ + CYExpression *expressions_; + + CYCompound(CYExpression *expressions) : + expressions_(expressions) + { + } + + void AddPrev(CYExpression *expression) { + CYExpression *last(expression); + while (last->next_ != NULL) + last = last->next_; + last->SetNext(expressions_); + expressions_ = expression; + } + + CYPrecedence(17) + + void Output(std::ostream &out, CYFlags flags) const; +}; struct CYLiteral : CYExpression { + CYPrecedence(0) +}; + +struct CYMagic : + CYExpression +{ + CYPrecedence(0) }; struct CYSelectorPart : @@ -199,9 +287,34 @@ struct CYSelector : { } - virtual void Output(std::ostream &out) const; + CYPrecedence(1) + + virtual void Output(std::ostream &out, CYFlags flags) const; }; +struct CYRange { + uint64_t lo_; + uint64_t hi_; + + CYRange(uint64_t lo, uint64_t hi) : + lo_(lo), hi_(hi) + { + } + + bool operator [](uint8_t value) const { + return !(value >> 7) && (value >> 6 ? hi_ : lo_) >> (value & 0x3f) & 0x1; + } + + void operator()(uint8_t value) { + if (value >> 7) + return; + (value >> 6 ? hi_ : lo_) |= uint64_t(0x1) << (value & 0x3f); + } +}; + +extern CYRange WordStartRange_; +extern CYRange WordEndRange_; + struct CYString : CYLiteral, CYName @@ -229,7 +342,20 @@ struct CYString : return Value(); } - virtual void Output(std::ostream &out) const; + virtual const char *Word() const { + if (size_ == 0 || !WordStartRange_[value_[0]]) + return NULL; + for (size_t i(1); i != size_; ++i) + if (!WordEndRange_[value_[i]]) + return NULL; + return Value(); + } + + virtual void Output(std::ostream &out) const { + return Output(out, CYNoFlags); + } + + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYNumber : @@ -251,7 +377,11 @@ struct CYNumber : throw; } - virtual void Output(std::ostream &out) const; + virtual void Output(std::ostream &out) const { + return Output(out, CYNoFlags); + } + + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYNull : @@ -263,26 +393,26 @@ struct CYNull : { } - virtual void Output(std::ostream &out) const; + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYThis : CYWord, - CYExpression + CYMagic { CYThis() : CYWord("this") { } - virtual void Output(std::ostream &out) const; + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYBoolean : CYLiteral { virtual bool Value() const = 0; - virtual void Output(std::ostream &out) const; + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYFalse : @@ -294,9 +424,7 @@ struct CYFalse : { } - virtual bool Value() const { - return false; - } + virtual bool Value() const; }; struct CYTrue : @@ -308,9 +436,7 @@ struct CYTrue : { } - virtual bool Value() const { - return true; - } + virtual bool Value() const; }; struct CYVariable : @@ -323,7 +449,9 @@ struct CYVariable : { } - virtual void Output(std::ostream &out) const; + CYPrecedence(0) + + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYPrefix : @@ -336,9 +464,10 @@ struct CYPrefix : { } + virtual bool Alphabetic() const = 0; virtual const char *Operator() const = 0; - virtual void Output(std::ostream &out) const; + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYInfix : @@ -353,9 +482,10 @@ struct CYInfix : { } + virtual bool Alphabetic() const = 0; virtual const char *Operator() const = 0; - virtual void Output(std::ostream &out) const; + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYPostfix : @@ -370,18 +500,24 @@ struct CYPostfix : virtual const char *Operator() const = 0; - virtual void Output(std::ostream &out) const; + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYAssignment : - CYInfix + CYExpression { + CYExpression *lhs_; + CYExpression *rhs_; + CYAssignment(CYExpression *lhs, CYExpression *rhs) : - CYInfix(lhs, rhs) + lhs_(lhs), + rhs_(rhs) { } virtual const char *Operator() const = 0; + + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYArgument : @@ -397,7 +533,7 @@ struct CYArgument : { } - void Output(std::ostream &out, bool send) const; + void Output(std::ostream &out) const; }; struct CYBlank : @@ -449,7 +585,7 @@ struct CYArray : { } - virtual void Output(std::ostream &out) const; + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYDeclaration : @@ -486,14 +622,73 @@ struct CYDeclarations : virtual void Output(std::ostream &out) const; }; -struct CYParameter : - CYNext, +struct CYField : + CYNext +{ + virtual void Output(std::ostream &out) const; +}; + +struct CYMessageParameter : + CYNext +{ + CYWord *tag_; + CYExpression *type_; + CYIdentifier *name_; + + CYMessageParameter(CYWord *tag, CYExpression *type, CYIdentifier *name) : + tag_(tag), + type_(type), + name_(name) + { + } +}; + +struct CYMessage : + CYSource +{ + bool instance_; + CYExpression *type_; + CYMessageParameter *parameter_; + CYSource *body_; + + CYMessage(bool instance, CYExpression *type, CYMessageParameter *parameter, CYSource *body) : + instance_(instance), + type_(type), + parameter_(parameter), + body_(body) + { + } + + virtual void Output(std::ostream &out) const; +}; + +struct CYClass : + CYSource +{ + CYIdentifier *name_; + CYExpression *super_; + CYField *fields_; + CYMessage *messages_; + + CYClass(CYIdentifier *name, CYExpression *super, CYField *fields, CYMessage *messages) : + name_(name), + super_(super), + fields_(fields), + messages_(messages) + { + } + + virtual void Output(std::ostream &out) const; +}; + +struct CYFunctionParameter : + CYNext, CYThing { CYIdentifier *name_; - CYParameter(CYIdentifier *name, CYParameter *next) : - CYNext(next), + CYFunctionParameter(CYIdentifier *name, CYFunctionParameter *next) : + CYNext(next), name_(name) { } @@ -563,7 +758,7 @@ struct CYObject : { } - void Output(std::ostream &out) const; + void Output(std::ostream &out, CYFlags flags) const; }; struct CYCatch : @@ -581,19 +776,21 @@ struct CYCatch : virtual void Output(std::ostream &out) const; }; -struct CYMessage : +struct CYSend : CYExpression { CYExpression *self_; CYArgument *arguments_; - CYMessage(CYExpression *self, CYArgument *arguments) : + CYSend(CYExpression *self, CYArgument *arguments) : self_(self), arguments_(arguments) { } - virtual void Output(std::ostream &out) const; + CYPrecedence(0) + + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYMember : @@ -608,7 +805,9 @@ struct CYMember : { } - virtual void Output(std::ostream &out) const; + CYPrecedence(1) + + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYNew : @@ -623,7 +822,9 @@ struct CYNew : { } - virtual void Output(std::ostream &out) const; + CYPrecedence(1) + + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYCall : @@ -638,7 +839,9 @@ struct CYCall : { } - virtual void Output(std::ostream &out) const; + CYPrecedence(2) + + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYIf : @@ -692,24 +895,26 @@ struct CYLambda : CYExpression { CYIdentifier *name_; - CYParameter *parameters_; + CYFunctionParameter *parameters_; CYSource *body_; - CYLambda(CYIdentifier *name, CYParameter *parameters, CYSource *body) : + CYLambda(CYIdentifier *name, CYFunctionParameter *parameters, CYSource *body) : name_(name), parameters_(parameters), body_(body) { } - virtual void Output(std::ostream &out) const; + CYPrecedence(0) + + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYFunction : CYLambda, CYSource { - CYFunction(CYIdentifier *name, CYParameter *parameters, CYSource *body) : + CYFunction(CYIdentifier *name, CYFunctionParameter *parameters, CYSource *body) : CYLambda(name, parameters, body) { } @@ -844,12 +1049,15 @@ struct CYCondition : CYExpression *false_; CYCondition(CYExpression *test, CYExpression *_true, CYExpression *_false) : + test_(test), true_(_true), false_(_false) { } - virtual void Output(std::ostream &out) const; + CYPrecedence(15) + + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYAddressOf : @@ -864,7 +1072,10 @@ struct CYAddressOf : return "&"; } - virtual void Output(std::ostream &out) const; + CYAlphabetic(false) + CYPrecedence(2) + + virtual void Output(std::ostream &out, CYFlags flags) const; }; struct CYIndirect : @@ -879,7 +1090,10 @@ struct CYIndirect : return "*"; } - virtual void Output(std::ostream &out) const; + CYAlphabetic(false) + CYPrecedence(1) + + virtual void Output(std::ostream &out, CYFlags flags) const; }; #define CYPostfix_(op, name) \ @@ -890,13 +1104,15 @@ struct CYIndirect : CYPostfix(lhs) \ { \ } \ + \ + CYPrecedence(3) \ \ virtual const char *Operator() const { \ return op; \ } \ }; -#define CYPrefix_(op, name) \ +#define CYPrefix_(alphabetic, op, name) \ struct CY ## name : \ CYPrefix \ { \ @@ -904,13 +1120,16 @@ struct CYIndirect : CYPrefix(rhs) \ { \ } \ + \ + CYAlphabetic(alphabetic) \ + CYPrecedence(4) \ \ virtual const char *Operator() const { \ return op; \ } \ }; -#define CYInfix_(op, name) \ +#define CYInfix_(alphabetic, precedence, op, name) \ struct CY ## name : \ CYInfix \ { \ @@ -918,6 +1137,9 @@ struct CYIndirect : CYInfix(lhs, rhs) \ { \ } \ + \ + CYAlphabetic(alphabetic) \ + CYPrecedence(precedence) \ \ virtual const char *Operator() const { \ return op; \ @@ -932,6 +1154,8 @@ struct CYIndirect : CYAssignment(lhs, rhs) \ { \ } \ + \ + CYPrecedence(16) \ \ virtual const char *Operator() const { \ return op; \ @@ -941,38 +1165,38 @@ struct CYIndirect : CYPostfix_("++", PostIncrement) CYPostfix_("--", PostDecrement) -CYPrefix_("delete", Delete) -CYPrefix_("void", Void) -CYPrefix_("typeof", TypeOf) -CYPrefix_("++", PreIncrement) -CYPrefix_("--", PreDecrement) -CYPrefix_("-", Negate) -CYPrefix_("~", BitwiseNot) -CYPrefix_("!", LogicalNot) - -CYInfix_("*", Multiply) -CYInfix_("/", Divide) -CYInfix_("%", Modulus) -CYInfix_("+", Add) -CYInfix_("-", Subtract) -CYInfix_("<<", ShiftLeft) -CYInfix_(">>", ShiftRightSigned) -CYInfix_(">>>", ShiftRightUnsigned) -CYInfix_("<", Less) -CYInfix_(">", Greater) -CYInfix_("<=", LessOrEqual) -CYInfix_(">=", GreaterOrEqual) -CYInfix_("instanceof", InstanceOf) -CYInfix_("in", In) -CYInfix_("==", Equal) -CYInfix_("!=", NotEqual) -CYInfix_("===", Identical) -CYInfix_("!==", NotIdentical) -CYInfix_("&", BitwiseAnd) -CYInfix_("^", BitwiseXOr) -CYInfix_("|", BitwiseOr) -CYInfix_("&&", LogicalAnd) -CYInfix_("||", LogicalOr) +CYPrefix_(true, "delete", Delete) +CYPrefix_(true, "void", Void) +CYPrefix_(true, "typeof", TypeOf) +CYPrefix_(false, "++", PreIncrement) +CYPrefix_(false, "--", PreDecrement) +CYPrefix_(false, "-", Negate) +CYPrefix_(false, "~", BitwiseNot) +CYPrefix_(false, "!", LogicalNot) + +CYInfix_(false, 5, "*", Multiply) +CYInfix_(false, 5, "/", Divide) +CYInfix_(false, 5, "%", Modulus) +CYInfix_(false, 6, "+", Add) +CYInfix_(false, 6, "-", Subtract) +CYInfix_(false, 7, "<<", ShiftLeft) +CYInfix_(false, 7, ">>", ShiftRightSigned) +CYInfix_(false, 7, ">>>", ShiftRightUnsigned) +CYInfix_(false, 8, "<", Less) +CYInfix_(false, 8, ">", Greater) +CYInfix_(false, 8, "<=", LessOrEqual) +CYInfix_(false, 8, ">=", GreaterOrEqual) +CYInfix_(true, 8, "instanceof", InstanceOf) +CYInfix_(true, 8, "in", In) +CYInfix_(false, 9, "==", Equal) +CYInfix_(false, 9, "!=", NotEqual) +CYInfix_(false, 9, "===", Identical) +CYInfix_(false, 9, "!==", NotIdentical) +CYInfix_(false, 10, "&", BitwiseAnd) +CYInfix_(false, 11, "^", BitwiseXOr) +CYInfix_(false, 12, "|", BitwiseOr) +CYInfix_(false, 13, "&&", LogicalAnd) +CYInfix_(false, 14, "||", LogicalOr) CYAssignment_("=", ) CYAssignment_("*=", Multiply)