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implemented optional arguments

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This commit is contained in:
Marc Zinnschlag 2010-08-22 12:47:56 +02:00
parent 17135a6403
commit f4e79a48f0
7 changed files with 344 additions and 239 deletions
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46
components/compiler/exprparser.hpp
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@ -15,7 +15,7 @@ namespace Compiler
class ExprParser : public Parser
{
Locals& mLocals;
Locals& mLocals;
Literals& mLiterals;
std::vector<char> mOperands;
std::vector<char> mOperators;
@ -26,35 +26,35 @@ namespace Compiler
bool mArgument;
std::string mExplicit;
bool mRefOp;
int getPriority (char op) const;
char getOperandType (int Index = 0) const;
char getOperandType (int Index = 0) const;
char getOperator() const;
bool isOpen() const;
void popOperator();
void popOperand();
void replaceBinaryOperands();
void pop();
void pushIntegerLiteral (int value);
void pushFloatLiteral (float value);
void pushBinaryOperator (char c);
void close();
void parseArguments (const std::string& arguments, Scanner& scanner);
int parseArguments (const std::string& arguments, Scanner& scanner);
public:
ExprParser (ErrorHandler& errorHandler, Context& context, Locals& locals,
Literals& literals, bool argument = false);
///< constructor
@ -84,20 +84,22 @@ namespace Compiler
virtual bool parseSpecial (int code, const TokenLoc& loc, Scanner& scanner);
///< Handle a special character token.
/// \return fetch another token?
void reset();
///< Reset parser to clean state.
char append (std::vector<Interpreter::Type_Code>& code);
///< Generate code for parsed expression.
/// \return Type ('l': integer, 'f': float)
void parseArguments (const std::string& arguments, Scanner& scanner,
int parseArguments (const std::string& arguments, Scanner& scanner,
std::vector<Interpreter::Type_Code>& code, bool invert = false);
///< Parse sequence of arguments specified by \a arguments.
/// \param arguments Each character represents one arguments ('l': integer,
/// 'f': float, 'S': string, 'c': string (case smashed))
/// 'f': float, 'S': string, 'c': string (case smashed), '/': following arguments are
/// optional)
/// \param invert Store arguments in reverted order.
/// \return number of optional arguments
};
}