upstream/mercurial-mirror Files · mercurial/bitmanipulation.h

templatekw: add new-style template expansion to {manifest}...

templatekw: add new-style template expansion to {manifest} The goal is to allow us to easily access to nested data. The dot operator will be introduced later so we can write '{p1.files}' instead of '{revset("p1()") % "{files}"}' for example. In the example above, 'p1' needs to carry a mapping dict along with its string representation. If it were a list or a dict, it could be wrapped semi-transparently with the _hybrid class, but for non-list/dict types, it would be difficult to proxy all necessary functions to underlying value type because several core operations may conflict with the ones of the underlying value: - hash(value) should be different from hash(wrapped(value)), which means dict[wrapped(value)] would be invalid - 'value == wrapped(value)' would be false, breaks 'ifcontains' - len(wrapped(value)) may be either len(value) or len(iter(wrapped(value))) So the wrapper has no proxy functions and its scope designed to be minimal. It's unwrapped at eval*() functions so we don't have to care for a wrapped object unless it's really needed: # most template functions just call evalfuncarg() unwrapped_value = evalfuncarg(context, mapping, args[n]) # if wrapped value is needed, use evalrawexp() maybe_wrapped_value = evalrawexp(context, mapping, args[n]) Another idea was to wrap every template variable with a tagging class, but which seemed uneasy without a static type checker. This patch updates {manifest} to a mappable as an example.

Martin von Zweigbergk - - Load All Authors

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        Maciej Fijalkowski
    
internals: move the bitmanipulation routines into its own file...

              r29444
            
      #ifndef _HG_BITMANIPULATION_H_

      #define _HG_BITMANIPULATION_H_

        Martin von Zweigbergk
    
bitmanipulation: add missing include of string.h...

              r32646
            
      #include <string.h>

        Maciej Fijalkowski
    
internals: move the bitmanipulation routines into its own file...

              r29444
            
      #include "compat.h"

      static inline uint32_t getbe32(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((d[0] << 24) |

      		(d[1] << 16) |

      		(d[2] << 8) |

      		(d[3]));

      }

      static inline int16_t getbeint16(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((d[0] << 8) |

      		(d[1]));

      }

      static inline uint16_t getbeuint16(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((d[0] << 8) |

      		(d[1]));

      }

      static inline void putbe32(uint32_t x, char *c)

      {

      	c[0] = (x >> 24) & 0xff;

      	c[1] = (x >> 16) & 0xff;

      	c[2] = (x >> 8) & 0xff;

      	c[3] = (x) & 0xff;

      }

      static inline double getbefloat64(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	double ret;

      	int i;

      	uint64_t t = 0;

      	for (i = 0; i < 8; i++) {

      		t = (t<<8) + d[i];

      	}

      	memcpy(&ret, &t, sizeof(t));

      	return ret;

      }

      #endif

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Maciej Fijalkowski internals: move the bitmanipulation routines into its own file...	r29444	#ifndef _HG_BITMANIPULATION_H_
		#define _HG_BITMANIPULATION_H_

Martin von Zweigbergk bitmanipulation: add missing include of string.h...	r32646	#include <string.h>

Maciej Fijalkowski internals: move the bitmanipulation routines into its own file...	r29444	#include "compat.h"

		static inline uint32_t getbe32(const char *c)
		{
		const unsigned char d = (const unsigned char )c;

		return ((d[0] << 24) \|
		(d[1] << 16) \|
		(d[2] << 8) \|
		(d[3]));
		}

		static inline int16_t getbeint16(const char *c)
		{
		const unsigned char d = (const unsigned char )c;

		return ((d[0] << 8) \|
		(d[1]));
		}

		static inline uint16_t getbeuint16(const char *c)
		{
		const unsigned char d = (const unsigned char )c;

		return ((d[0] << 8) \|
		(d[1]));
		}

		static inline void putbe32(uint32_t x, char *c)
		{
		c[0] = (x >> 24) & 0xff;
		c[1] = (x >> 16) & 0xff;
		c[2] = (x >> 8) & 0xff;
		c[3] = (x) & 0xff;
		}

		static inline double getbefloat64(const char *c)
		{
		const unsigned char d = (const unsigned char )c;
		double ret;
		int i;
		uint64_t t = 0;
		for (i = 0; i < 8; i++) {
		t = (t<<8) + d[i];
		}
		memcpy(&ret, &t, sizeof(t));
		return ret;
		}

		#endif