Diff: rpc.h

Revision:

44:24d45a770a51

Parent:

43:e2ed12d17f06

Child:

45:3d775a932e1d

--- a/rpc.h	Fri Oct 26 17:40:46 2012 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,585 +0,0 @@
-/* mbed Microcontroller Library - RPC
- * Copyright (c) 2008-2009 ARM Limited. All rights reserved.
- */ 
- 
-#ifndef MBED_RPC_H
-#define MBED_RPC_H
-
-/**  Helpers for rpc handling.
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <ctype.h>
-#include "Base.h"
-
-#include "PinNames.h"
-#include <stdint.h>
-
-namespace mbed {
-
-/** Parses and returns a value from a string.
- *
- *  @param arg The string to pase
- *  @param next If not NULL a pointer to after the last 
- *    character parsed is written here
- */
-template<typename T> T parse_arg(const char *arg, const char **next);
-
-inline char parse_char(const char *arg, const char **next) {
-    char c = *arg++;
-    if(c == '\\') {
-        c = *arg++;
-        switch(c) {
-        case 'a': c = '\a'; break;
-        case 'b': c = '\b'; break;
-        case 't': c = '\t'; break;
-        case 'n': c = '\n'; break;
-        case 'v': c = '\v'; break;
-        case 'f': c = '\f'; break;
-        case 'r': c = '\r'; break;
-        case 'x': 
-            {
-                /* two-character hexadecimal */
-                char buf[3];
-                buf[0] = *arg++;
-                buf[1] = *arg++;
-                buf[2] = 0;
-                c = strtol(buf, NULL, 16); 
-            }
-            break;
-        default: 
-            if(isdigit(c)) {
-                /* three-character octal */
-                char buf[4];
-                buf[0] = c;
-                buf[1] = *arg++;
-                buf[2] = *arg++;
-                buf[3] = 0;
-                c = strtol(buf, NULL, 8); 
-            }
-            break;
-        }
-    }
-    *next = arg;
-    return c;
-}
-
-/* signed integer types */
-
-template<> inline int parse_arg<int>(const char *arg, const char **next) {
-    if(arg[0] == '\'') {
-        char c = parse_char(arg+1, &arg);
-        if(next != NULL) *next = arg+1;
-        return c;
-    } else {
-        return strtol(arg, const_cast<char**>(next), 0);        
-    }
-}
-
-template<> inline char parse_arg<char>(const char *arg, const char **next) {
-    return parse_arg<int>(arg,next);
-}
-
-template<> inline short int parse_arg<short int>(const char *arg, const char **next) {
-    return parse_arg<int>(arg,next);
-}
-
-template<> inline long int parse_arg<long int>(const char *arg, const char **next) {
-    return parse_arg<int>(arg,next);
-}
-
-template<> inline long long parse_arg<long long>(const char *arg, const char **next) {
-    return strtoll(arg, const_cast<char**>(next), 0);
-}
-
-/* unsigned integer types */
-
-template<> inline unsigned int parse_arg<unsigned int>(const char *arg, const char **next) {
-    if(arg[0] == '\'') {
-        char c = parse_char(arg+1, &arg);
-        if(next != NULL) *next = arg+1;
-        return c;
-    } else {
-        return strtoul(arg, const_cast<char**>(next), 0);        
-    }
-}
-
-template<> inline unsigned char parse_arg<unsigned char>(const char *arg, const char **next) {
-    return parse_arg<unsigned int>(arg,next);
-}
-
-template<> inline unsigned short int parse_arg<unsigned short int>(const char *arg, const char **next) {
-    return parse_arg<unsigned int>(arg,next);
-}
-
-template<> inline unsigned long int parse_arg<unsigned long int>(const char *arg, const char **next) {
-    return parse_arg<unsigned int>(arg,next);
-}
-
-template<> inline unsigned long long parse_arg<unsigned long long>(const char *arg, const char **next) {
-    return strtoull(arg, const_cast<char**>(next), 0);
-}
-
-/* floating types */
-
-template<> inline float parse_arg<float>(const char *arg, const char **next) {
-#if !defined(__ARMCC_VERSION) || __ARMCC_VERSION >= 410000
-    return strtof(arg,const_cast<char**>(next));
-#elif __ARMCC_VERSION >= 310000
-    /* bug in header means no using declaration for strtof */
-    return std::strtof(arg,const_cast<char**>(next));    
-#else
-    /* strtof not supported */
-    return strtod(arg,const_cast<char**>(next));
-#endif
-}
-
-template<> inline double parse_arg<double>(const char *arg, const char **next) {
-    return strtod(arg,const_cast<char**>(next));
-}
-
-template<> inline long double parse_arg<long double>(const char *arg, const char **next) {
-    return strtod(arg,const_cast<char**>(next));
-}
-
-/* string */
-
-template<> inline char *parse_arg<char*>(const char *arg, const char **next) {
-    const char *ptr = arg;
-    char *res = NULL;
-    if(*arg == '"') {
-        /* quoted string */
-        ptr = ++arg;
-        int len = 0;
-        /* find the end (and length) of the quoted string */
-        for(char c = *ptr; c != 0 && c != '"'; c = *++ptr) {
-            len++;
-            if(c == '\\') {
-                ptr++;
-            }
-        }
-        /* copy the quoted string, and unescape characters */
-        if(len != 0) {
-            res = new char[len+1];
-            char *resptr = res;
-            while(arg != ptr) {
-                *resptr++ = parse_char(arg, &arg);
-            }
-            *resptr = 0;
-        }
-    } else {
-        /* unquoted string */
-        while(isalnum(*ptr) || *ptr=='_') {
-            ptr++;
-        }
-        int len = ptr-arg;
-        if(len!=0) {
-            res = new char[len+1];
-            memcpy(res, arg, len);
-            res[len] = 0;
-        }
-    }
-
-    if(next != NULL) {
-        *next = ptr;
-    }
-    return res;
-}
-
-template<> inline const char *parse_arg<const char*>(const char *arg, const char **next) {
-    return parse_arg<char*>(arg,next);
-}
-
-/* Pins */
-
-
-inline PinName parse_pins(const char *str) {
-    const PinName pin_names[] = {p5, p6, p7, p8, p9, p10, p11, p12, p13, p14
-                                , p15, p16, p17, p18, p19, p20, p21, p22, p23
-                                , p24, p25, p26, p27, p28, p29, p30};
-
-    if(str[0] == 'P') { // Pn_n
-        uint32_t port = str[1] - '0';
-        uint32_t pin = str[3] - '0'; // Pn_n
-        uint32_t pin2 = str[4] - '0'; // Pn_nn
-        if(pin2 <= 9) {
-            pin = pin * 10 + pin2;
-        }
-#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
-        return (PinName)(LPC_GPIO0_BASE + port * 32 + pin);
-#elif defined(TARGET_LPC11U24)
-        return (PinName)(port * 32 + pin);
-#endif
-    } else if(str[0] == 'p') {  // pn
-        uint32_t pin = str[1] - '0'; // pn
-        uint32_t pin2 = str[2] - '0'; // pnn
-        if(pin2 <= 9) {
-                  pin = pin * 10 + pin2;
-        }
-        if(pin < 5 || pin > 30) {
-              return NC;
-        }
-        return pin_names[pin - 5];
-    } else if(str[0] == 'L') {  // LEDn
-        switch(str[3]) {
-            case '1' : return LED1;
-            case '2' : return LED2;
-            case '3' : return LED3;
-            case '4' : return LED4;
-        }
-    } else if(str[0] == 'U') {  // USB?X
-        switch(str[3]) {
-            case 'T' : return USBTX;
-            case 'R' : return USBRX;
-        }
-    }
-    return NC;
-}
-
-template<> inline PinName parse_arg<PinName>(const char *arg, const char **next) {
-    const char *ptr = arg;
-    PinName pinname = NC;
-    while(isalnum(*ptr) || *ptr=='_') {
-        ptr++;
-    }
-    int len = ptr-arg;
-    if(len!=0) {
-        pinname = parse_pins(arg);
-    
-    }
-    if(next != NULL) {
-        *next = ptr;
-    }
-    return pinname;
-}
-
-
-/** Writes a value in to a result string in an appropriate manner
- *
- *  @param val The value to write
- *  @param result A pointer to the array to write the value into
- */
-template<typename T> void write_result(T val, char *result);
-
-/* signed integer types */
-
-template<> inline void write_result<char>(char val, char *result) {
-    result[0] = val;
-    result[1] = '\0';
-}
-
-template<> inline void write_result<short int>(short int val, char *result) {
-    sprintf(result, "%hi", val); 
-}
-
-template<> inline void write_result<int>(int val, char *result) {
-    sprintf(result, "%i", val); 
-}
-
-template<> inline void write_result<long int>(long int val, char *result) {
-    sprintf(result, "%li", val); 
-}
-
-template<> inline void write_result<long long int>(long long int val, char *result) {
-    sprintf(result, "%lli", val); 
-}
-
-/* unsigned integer types */
-
-template<> inline void write_result<unsigned char>(unsigned char val, char *result) {
-    result[0] = val;
-    result[1] = '\0';
-}
-
-template<> inline void write_result<unsigned short int>(unsigned short int val, char *result) {
-    sprintf(result, "%hu", val); 
-}
-
-template<> inline void write_result<unsigned int>(unsigned int val, char *result) {
-    sprintf(result, "%u", val); 
-}
-
-template<> inline void write_result<unsigned long int>(unsigned long int val, char *result) {
-    sprintf(result, "%lu", val); 
-}
-
-template<> inline void write_result<unsigned long long int>(unsigned long long int val, char *result) {
-    sprintf(result, "%llu", val); 
-}
-
-/* floating types */
-
-template<> inline void write_result<float>(float val, char *result) {
-    sprintf(result, "%.17g", val); 
-}
-
-template<> inline void write_result<double>(double val, char *result) {
-    sprintf(result, "%.17g", val); 
-}
-
-template<> inline void write_result<long double>(long double val, char *result) {
-    sprintf(result, "%.17Lg", val); 
-}
-
-
-/* string */
-
-template<> inline void write_result<char*>(char *val, char *result) {
-    if(val==NULL) {
-        result[0] = 0;
-    } else {
-        strcpy(result, val);
-    }
-}
-
-template<> inline void write_result<const char*>(const char *val, char *result) {
-    if(val==NULL) {
-        result[0] = 0;
-    } else {
-        strcpy(result, val);
-    }
-}
-
-
-inline const char *next_arg(const char* next) {
-    while(*next == ' ') next++;
-    if(*next == ',' || *next == '?') next++;
-    while(*next == ' ') next++;
-    return next;
-}
-
-
-/** rpc_method_caller
- */
-template<class T, void (T::*member)(const char *,char *)> 
-void rpc_method_caller(Base *this_ptr, const char *arguments, char *result) {
-    (static_cast<T*>(this_ptr)->*member)(arguments,result); 
-}
-
-
-/** rpc_method_caller
- */
-template<class T, void (T::*member)()> 
-void rpc_method_caller(Base *this_ptr, const char *arguments, char *result) { 
-    (static_cast<T*>(this_ptr)->*member)(); 
-    if(result != NULL) {
-        result[0] = '\0';
-    }
-}
-
-
-/** rpc_method_caller
- */
-template<class T, typename A1, void (T::*member)(A1)> 
-void rpc_method_caller(Base *this_ptr, const char *arguments, char *result) {
-
-    const char *next = arguments;
-    A1 arg1 = parse_arg<A1>(next_arg(next),NULL);
-
-    (static_cast<T*>(this_ptr)->*member)(arg1); 
-    if(result != NULL) {
-        result[0] = '\0';
-    }
-}
-
-
-/** rpc_method_caller
- */
-template<class T, typename A1, typename A2, void (T::*member)(A1,A2)> 
-void rpc_method_caller(Base *this_ptr, const char *arguments, char *result) {
-
-    const char *next = arguments;
-    A1 arg1 = parse_arg<A1>(next_arg(next),&next);
-    A2 arg2 = parse_arg<A2>(next_arg(next),NULL);
-
-    (static_cast<T*>(this_ptr)->*member)(arg1,arg2);
-    if(result != NULL) {
-        result[0] = '\0';
-    }
-}
-
-
-/** rpc_method_caller
- */
-template<class T, typename A1, typename A2, typename A3, void (T::*member)(A1,A2,A3)> 
-void rpc_method_caller(Base *this_ptr, const char *arguments, char *result) {
-
-    const char *next = arguments;
-    A1 arg1 = parse_arg<A1>(next_arg(next),&next);
-    A2 arg2 = parse_arg<A2>(next_arg(next),&next);
-    A3 arg3 = parse_arg<A3>(next_arg(next),NULL);
-
-    (static_cast<T*>(this_ptr)->*member)(arg1,arg2,arg3);
-    if(result != NULL) {
-        result[0] = '\0';
-    }
-}
-
-
-/** rpc_method_caller
- */
-template<typename R, class T, R (T::*member)()> 
-void rpc_method_caller(Base *this_ptr, const char *arguments, char *result) { 
-    R res = (static_cast<T*>(this_ptr)->*member)();
-    if(result != NULL) {
-        write_result<R>(res, result);
-    }
-}
-
-
-/** rpc_method_caller
- */
-template<typename R, class T, typename A1, R (T::*member)(A1)> 
-void rpc_method_caller(Base *this_ptr, const char *arguments, char *result) {
-
-    const char *next = arguments;
-    A1 arg1 = parse_arg<A1>(next_arg(next),NULL);
-
-    R res = (static_cast<T*>(this_ptr)->*member)(arg1);
-    if(result != NULL) {
-        write_result<R>(res, result);
-    }
-}
-
-
-/** rpc_method_caller
- */
-template<typename R, class T, typename A1, typename A2, R (T::*member)(A1,A2)> 
-void rpc_method_caller(Base *this_ptr, const char *arguments, char *result) {
-
-    const char *next = arguments;
-    A1 arg1 = parse_arg<A1>(next_arg(next),&next);
-    A2 arg2 = parse_arg<A2>(next_arg(next),NULL);
-
-    R res = (static_cast<T*>(this_ptr)->*member)(arg1,arg2);
-    if(result != NULL) {
-        write_result<R>(res, result);
-    }
-}
-
-
-/** rpc_method_caller
- */
-template<typename R, class T, typename A1, typename A2, typename A3, R (T::*member)(A1,A2,A3)> 
-void rpc_method_caller(Base *this_ptr, const char *arguments, char *result) {
-
-    const char *next = arguments;
-    A1 arg1 = parse_arg<A1>(next_arg(next),&next);
-    A2 arg2 = parse_arg<A2>(next_arg(next),&next);
-    A3 arg3 = parse_arg<A3>(next_arg(next),NULL);
-
-    R res = (static_cast<T*>(this_ptr)->*member)(arg1,arg2,arg3);
-    if(result != NULL) {
-        write_result<R>(res, result);
-    }
-}
-
-
-/** rpc_function caller
- */
-template<typename R, R (*func)()>
-void rpc_function_caller(const char *arguments, char *result) {
-    R res = (*func)();
-    if(result != NULL) {
-        write_result<R>(res, result);
-    }
-}
-
-
-/** rpc_function caller
- */
-template<typename R, typename A1, R (*func)(A1)>
-void rpc_function_caller(const char *arguments, char *result) {
-    A1 arg1 = parse_arg<A1>(next_arg(arguments),NULL);
-    R res = (*func)(arg1);
-    if(result != NULL) {
-        write_result<R>(res, result);
-    }
-}
-
-
-/** rpc_function caller
- */
-template<typename R, typename A1, typename A2, R (*func)(A1,A2)>
-void rpc_function_caller(const char *arguments, char *result) {
-
-    const char *next = arguments;
-    A1 arg1 = parse_arg<A1>(next_arg(next),&next);
-    A2 arg2 = parse_arg<A2>(next_arg(next),NULL);
-
-    R res = (*func)(arg1,arg2);
-    if(result != NULL) {
-        write_result<R>(res, result);
-    }
-}
-
-
-/** rpc_function caller
- */
-template<typename R, typename A1, typename A2, typename A3, R (*func)(A1,A2,A3)>
-void rpc_function_caller(const char *arguments, char *result) {
-
-    const char *next = arguments;
-    A1 arg1 = parse_arg<A1>(next_arg(next),&next);
-    A2 arg2 = parse_arg<A2>(next_arg(next),&next);
-    A3 arg3 = parse_arg<A3>(next_arg(next),NULL);
-
-    R res = (*func)(arg1,arg2,arg3);
-    if(result != NULL) {
-        write_result<R>(res, result);
-    }
-}
-
-
-/** rpc_function caller
- */
-template<typename R, typename A1, typename A2, typename A3, typename A4, R (*func)(A1,A2,A3,A4)>
-void rpc_function_caller(const char *arguments, char *result) {
-
-    const char *next = arguments;
-    A1 arg1 = parse_arg<A1>(next_arg(next),&next);
-    A2 arg2 = parse_arg<A2>(next_arg(next),&next);
-    A3 arg3 = parse_arg<A3>(next_arg(next),&next);
-    A4 arg4 = parse_arg<A4>(next_arg(next),NULL);
-
-    R res = (*func)(arg1,arg2,arg3,arg4);
-    if(result != NULL) {
-        write_result<R>(res, result);
-    }
-}
-
-
-struct rpc_method { 
-    const char *name;
-    typedef void (*caller_t)(Base*, const char*, char*);
-    typedef const struct rpc_method *(*super_t)(Base*);
-    union {
-        caller_t caller;
-        super_t super;
-    };
-};
-
-template<class C>
-const struct rpc_method *rpc_super(Base *this_ptr) {
-    return static_cast<C*>(this_ptr)->C::get_rpc_methods();
-}
-
-#define RPC_METHOD_END { NULL, NULL }
-#define RPC_METHOD_SUPER(C) { NULL, (rpc_method::caller_t)(rpc_method::super_t)rpc_super<C> }
-
-/** Parse a string describing a call and then do it
- *
- * @param call A pointer to a string describing the call, which has
- *   the form /object/method arg ... argn. Arguments are
- *   delimited by space characters, and the string is terminated
- *   by a null character.
- * @param result A pointer to an array to write the result into.
- */
-bool rpc(const char *buf, char *result = 0);
-
-
-} // namespace mbed
-
-#endif