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113 lines
4.3 KiB
C++
113 lines
4.3 KiB
C++
#ifndef COMPILER_EXTENSIONS_H_INCLUDED
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#define COMPILER_EXTENSIONS_H_INCLUDED
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#include <string>
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#include <map>
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#include <vector>
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#include <components/interpreter/types.hpp>
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namespace Compiler
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{
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class Literals;
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/// Typedef for script arguments string
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/** Every character reperesents an argument to the command. All arguments are required until a /, after which
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every argument is optional. <BR>
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Eg: fff/f represents 3 required floats followed by one optional float <BR>
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f - Float <BR>
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c - String, case smashed <BR>
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l - Integer <BR>
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s - Short <BR>
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S - String, case preserved <BR>
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x - Optional, ignored string argument
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X - Optional, ignored integer argument
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**/
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typedef std::string ScriptArgs;
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/// Typedef for script return char
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/** The character represents the type of data being returned. <BR>
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f - float <BR>
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S - String (Cell names) <BR>
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l - Integer
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**/
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typedef char ScriptReturn;
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/// \brief Collection of compiler extensions
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class Extensions
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{
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struct Function
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{
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char mReturn;
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ScriptArgs mArguments;
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int mCode;
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int mCodeExplicit;
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int mSegment;
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};
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struct Instruction
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{
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ScriptArgs mArguments;
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int mCode;
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int mCodeExplicit;
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int mSegment;
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};
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int mNextKeywordIndex;
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std::map<std::string, int> mKeywords;
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std::map<int, Function> mFunctions;
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std::map<int, Instruction> mInstructions;
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public:
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Extensions();
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int searchKeyword (const std::string& keyword) const;
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///< Return extension keyword code, that is assigned to the string \a keyword.
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/// - if no match is found 0 is returned.
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/// - keyword must be all lower case.
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bool isFunction (int keyword, ScriptReturn& returnType, ScriptArgs& argumentType,
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bool& explicitReference) const;
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///< Is this keyword registered with a function? If yes, return return and argument
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/// types.
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/// \param explicitReference In: has explicit reference; Out: set to false, if
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/// explicit reference is not available for this instruction.
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bool isInstruction (int keyword, ScriptArgs& argumentType,
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bool& explicitReference) const;
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///< Is this keyword registered with a function? If yes, return argument types.
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/// \param explicitReference In: has explicit reference; Out: set to false, if
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/// explicit reference is not available for this instruction.
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void registerFunction (const std::string& keyword, ScriptReturn returnType,
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const ScriptArgs& argumentType, int code, int codeExplicit = -1);
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///< Register a custom function
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/// - keyword must be all lower case.
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/// - keyword must be unique
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/// - if explicit references are not supported, segment5codeExplicit must be set to -1
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/// \note Currently only segment 3 and segment 5 opcodes are supported.
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void registerInstruction (const std::string& keyword,
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const ScriptArgs& argumentType, int code, int codeExplicit = -1);
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///< Register a custom instruction
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/// - keyword must be all lower case.
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/// - keyword must be unique
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/// - if explicit references are not supported, segment5codeExplicit must be set to -1
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/// \note Currently only segment 3 and segment 5 opcodes are supported.
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void generateFunctionCode (int keyword, std::vector<Interpreter::Type_Code>& code,
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Literals& literals, const std::string& id, int optionalArguments) const;
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///< Append code for function to \a code.
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void generateInstructionCode (int keyword, std::vector<Interpreter::Type_Code>& code,
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Literals& literals, const std::string& id, int optionalArguments) const;
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///< Append code for function to \a code.
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void listKeywords (std::vector<std::string>& keywords) const;
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///< Append all known keywords to \a kaywords.
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};
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}
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#endif
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