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