Initial Commit

common/MACRO.HPP

@@ -0,0 +1,94 @@
+#ifndef _COMMON_MACRO_HPP_
+#define _COMMON_MACRO_HPP_
+#ifndef _COMMON_STRING_HPP_
+#include <common/string.hpp>
+#endif
+#ifndef _COMMON_BLOCK_HPP_
+#include <common/block.hpp>
+#endif
+#ifndef _COMMON_WINDOWS_HPP_
+#include <common/windows.hpp>
+#endif
+
+class SymbolTable
+{
+public:
+	SymbolTable();
+	~SymbolTable();
+	void pushSymbol(char symbol);
+	void popSymbol(char &symbol);
+	void popSymbol(void);
+	void popSymbol(int numSymbols);
+	WORD isInSymbols(char symbol);
+private:
+	enum {DefaultTableSize=256};
+	String mSymbolTable;
+	int mCurrentSymbols;
+	int mTableSize;
+};
+
+inline
+SymbolTable::SymbolTable()
+: mCurrentSymbols(0), mTableSize(DefaultTableSize)
+{
+	mSymbolTable.reserve(DefaultTableSize);
+}
+
+inline
+SymbolTable::~SymbolTable()
+{
+}
+
+inline
+void SymbolTable::pushSymbol(char symbol)
+{
+	if(mCurrentSymbols>=mTableSize)return;
+	*((LPSTR)mSymbolTable+mCurrentSymbols)=symbol;
+	mCurrentSymbols++;
+}
+
+inline
+void SymbolTable::popSymbol(char &symbol)
+{
+	if(!mCurrentSymbols)return;
+	--mCurrentSymbols;
+	symbol=*((LPSTR)mSymbolTable+mCurrentSymbols);
+}
+
+inline
+void SymbolTable::popSymbol(void)
+{
+	if(!mCurrentSymbols)return;
+	--mCurrentSymbols;
+}
+
+inline
+void SymbolTable::popSymbol(int numSymbols)
+{
+	if(mCurrentSymbols-numSymbols<0)return;
+	mCurrentSymbols-=numSymbols;
+}
+
+// **********************************************************************************
+
+class Macro : public SymbolTable
+{
+public:
+	Macro(void);
+	~Macro();
+	void processEmbeddedMacro(String &someString);
+private:
+	enum Symbols{EnvMacroStart='$',EnvMacroSync='(',EnvMacroMid=',',EnvMacroEnd=')'};
+	void expandEmbeddedMacro(void);
+	void extractString(String &macroString);
+	String locateFirstEnvironmentString(Block<String> &envStrings);
+	WORD expandFunction(String &atFunction)const;
+  WORD expandLiteral(String &literalString)const;
+	WORD expect(char symbol);
+
+  String mUnsetString;
+	String mInputString;
+	char *mlpPtrString;
+};
+#endif
+