Library/ccalc-0.5.1/mparser.h

@@ -0,0 +1,80 @@
+/*
+    Math parser for CCalc library.
+*/
+#include "strmap.h"
+#include "lexer.h"
+#include "pack.h"
+
+//#define RUSSIAN 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define MAX_STACK_SIZE 32
+
+extern const double DblErR;
+extern const double DblNiN;
+
+typedef enum {
+    // Binary
+    OP_SHL, OP_SHR, OP_POW,
+    OP_LOGIC_NEQ, OP_LOGIC_GEQ, OP_LOGIC_LEQ,
+    OP_LOGIC_AND, OP_LOGIC_OR, // Logical
+    OP_COMSTART, OP_ASSIGN, // For internal needs
+    OP_OBR, // Special
+    OP_ADD, OP_SUB, OP_MUL, OP_DIV, OP_MOD, OP_UNK, // Arithmetic
+    OP_XOR, OP_NOT, OP_AND, OP_OR, // Bitwise
+    OP_EQU, OP_GREATER, OP_LESS,
+    OP_LOGIC, OP_LOGIC_SEP, OP_CBR, OP_COMMA, // Logical
+    OP_FORMULAEND, // For script
+    OP_FUNC_ONEARG, OP_FUNC_MULTIARG // Special
+} OperType_t;
+
+typedef struct {
+    char       *str;
+    double	value;
+} Parameter;
+
+typedef double (*OneArgFunc) ( double arg );
+typedef char* (*MultiArgFunc) ( int paramcnt, double *args, 
+				 hqStrMap *strparams, double *result );
+typedef int (*PrmSrchFunc) ( const char *str, int len, double *value,
+			     void *param );
+
+#pragma pack(push,1)
+
+typedef struct {
+    OperType_t	OperType;
+    void       *Func;
+    char	PrevValTop;
+    hqStrMap   *StrParams;
+} Operation;
+
+typedef struct {
+    /* public */
+    hqStrMap   *Parameters;	// List of numeric veriables
+    hqStrMap   *ExtFunctions;   // List of multi-argument external functions
+    PrmSrchFunc MoreParams;	// Function for calculating unhandled parameters
+    void       *ParamFuncParam; // Parameter given to this function
+    /* private */
+    Operation	OpStack[MAX_STACK_SIZE];
+    double	ValStack[MAX_STACK_SIZE];
+    int		OpTop, ValTop;
+    int		ObrDist;
+    hqLexer     Lexer;
+    int		script;
+    hqStrMap   *VarParams;
+} hqMathParser;
+
+#pragma pack(pop)
+
+/* API */
+
+hqMathParser* MathParser_Create( char *MoreLetters );
+void MathParser_Destroy( hqMathParser* parser );
+char* MathParser_Parse( hqMathParser* parser, const char *Formula, double *result );
+
+#ifdef __cplusplus
+}
+#endif