reimplement pixel graphics - mu - Soul of a tiny new machine. More thorough tests → More comprehensible and rewrite-friendly software → More resilient society.

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author	Kartik K. Agaram <vc@akkartik.com>	2021-04-19 21:05:57 -0700
committer	Kartik K. Agaram <vc@akkartik.com>	2021-04-19 21:05:57 -0700
commit	34596b6ee9811a3f1a5bf94d307f6527cb7467b1 (patch)
tree	f443bd426bce78e677f0b4879cec0775156e6b1c /html/linux/bootstrap/018jump_disp32.cc.html
parent	c22874a97f9e22f00b78b46b0647ea97325370f4 (diff)
download	mu-34596b6ee9811a3f1a5bf94d307f6527cb7467b1.tar.gz

reimplement pixel graphics

Before: we always drew pixels atop characters, and we only drew pixels
that were explicitly requested.

After: we always draw pixels atop characters, and we only draw pixels that
don't have color 0.

Both semantics should be identical as long as pixels are never drawn atop
characters.

Diffstat (limited to 'html/linux/bootstrap/018jump_disp32.cc.html')

0 files changed, 0 insertions, 0 deletions

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#
#
#            Nim's Runtime Library
#        (c) Copyright 2015 Andreas Rumpf
#
#    See the file "copying.txt", included in this
#    distribution, for details about the copyright.
#

# The current PCRE version information.

const
  PCRE_MAJOR* = 8
  PCRE_MINOR* = 36
  PCRE_PRERELEASE* = true
  PCRE_DATE* = "2014-09-26"

# When an application links to a PCRE DLL in Windows, the symbols that are
# imported have to be identified as such. When building PCRE, the appropriate
# export setting is defined in pcre_internal.h, which includes this file. So we
# don't change existing definitions of PCRE_EXP_DECL and PCRECPP_EXP_DECL.

# By default, we use the standard "extern" declarations.

# Allow for C++ users

# Public options. Some are compile-time only, some are run-time only, and some
# are both. Most of the compile-time options are saved with the compiled regex
# so that they can be inspected during studying (and therefore JIT compiling).
# Note that pcre_study() has its own set of options. Originally, all the options
# defined here used distinct bits. However, almost all the bits in a 32-bit word
# are now used, so in order to conserve them, option bits that were previously
# only recognized at matching time (i.e. by pcre_exec() or pcre_dfa_exec()) may
# also be used for compile-time options that affect only compiling and are not
# relevant for studying or JIT compiling.
#
# Some options for pcre_compile() change its behaviour but do not affect the
# behaviour of the execution functions. Other options are passed through to the
# execution functions and affect their behaviour, with or without affecting the
# behaviour of pcre_compile().
#
# Options that can be passed to pcre_compile() are tagged Cx below, with these
# variants:
#
# C1   Affects compile only
# C2   Does not affect compile; affects exec, dfa_exec
# C3   Affects compile, exec, dfa_exec
# C4   Affects compile, exec, dfa_exec, study
# C5   Affects compile, exec, study
#
# Options that can be set for pcre_exec() and/or pcre_dfa_exec() are flagged
# with E and D, respectively. They take precedence over C3, C4, and C5 settings
# passed from pcre_compile(). Those that are compatible with JIT execution are
# flagged with J.

const
  CASELESS*          = 0x00000001  # C1
  MULTILINE*         = 0x00000002  # C1
  DOTALL*            = 0x00000004  # C1
  EXTENDED*          = 0x00000008  # C1
  ANCHORED*          = 0x00000010  # C4 E D
  DOLLAR_ENDONLY*    = 0x00000020  # C2
  EXTRA*             = 0x00000040  # C1
  NOTBOL*            = 0x00000080  #    E D J
  NOTEOL*            = 0x00000100  #    E D J
  UNGREEDY*          = 0x00000200  # C1
  NOTEMPTY*          = 0x00000400  #    E D J
  UTF8*              = 0x00000800  # C4        )
  UTF16*             = 0x00000800  # C4        ) Synonyms
  UTF32*             = 0x00000800  # C4        )
  NO_AUTO_CAPTURE*   = 0x00001000  # C1
  NO_UTF8_CHECK*     = 0x00002000  # C1 E D J  )
  NO_UTF16_CHECK*    = 0x00002000  # C1 E D J  ) Synonyms
  NO_UTF32_CHECK*    = 0x00002000  # C1 E D J  )
  AUTO_CALLOUT*      = 0x00004000  # C1
  PARTIAL_SOFT*      = 0x00008000  #    E D J  ) Synonyms
  PARTIAL*           = 0x00008000  #    E D J  )

# This pair use the same bit.
const
  NEVER_UTF*         = 0x00010000  # C1        ) Overlaid
  DFA_SHORTEST*      = 0x00010000  #      D    ) Overlaid

# This pair use the same bit.
const
  NO_AUTO_POSSESS*   = 0x00020000  # C1        ) Overlaid
  DFA_RESTART*       = 0x00020000  #      D    ) Overlaid

const
  FIRSTLINE*         = 0x00040000  # C3
  DUPNAMES*          = 0x00080000  # C1
  NEWLINE_CR*        = 0x00100000  # C3 E D
  NEWLINE_LF*        = 0x00200000  # C3 E D
  NEWLINE_CRLF*      = 0x00300000  # C3 E D
  NEWLINE_ANY*       = 0x00400000  # C3 E D
  NEWLINE_ANYCRLF*   = 0x00500000  # C3 E D
  BSR_ANYCRLF*       = 0x00800000  # C3 E D
  BSR_UNICODE*       = 0x01000000  # C3 E D
  JAVASCRIPT_COMPAT* = 0x02000000  # C5
  NO_START_OPTIMIZE* = 0x04000000  # C2 E D    ) Synonyms
  NO_START_OPTIMISE* = 0x04000000  # C2 E D    )
  PARTIAL_HARD*      = 0x08000000  #    E D J
  NOTEMPTY_ATSTART*  = 0x10000000  #    E D J
  UCP*               = 0x20000000  # C3

# Exec-time and get/set-time error codes
const
  ERROR_NOMATCH*          =  -1
  ERROR_NULL*             =  -2
  ERROR_BADOPTION*        =  -3
  ERROR_BADMAGIC*         =  -4
  ERROR_UNKNOWN_OPCODE*   =  -5
  ERROR_UNKNOWN_NODE*     =  -5 ## For backward compatibility
  ERROR_NOMEMORY*         =  -6
  ERROR_NOSUBSTRING*      =  -7
  ERROR_MATCHLIMIT*       =  -8
  ERROR_CALLOUT*          =  -9 ## Never used by PCRE itself
  ERROR_BADUTF8*          = -10 ## Same for 8/16/32
  ERROR_BADUTF16*         = -10 ## Same for 8/16/32
  ERROR_BADUTF32*         = -10 ## Same for 8/16/32
  ERROR_BADUTF8_OFFSET*   = -11 ## Same for 8/16
  ERROR_BADUTF16_OFFSET*  = -11 ## Same for 8/16
  ERROR_PARTIAL*          = -12
  ERROR_BADPARTIAL*       = -13
  ERROR_INTERNAL*         = -14
  ERROR_BADCOUNT*         = -15
  ERROR_DFA_UITEM*        = -16
  ERROR_DFA_UCOND*        = -17
  ERROR_DFA_UMLIMIT*      = -18
  ERROR_DFA_WSSIZE*       = -19
  ERROR_DFA_RECURSE*      = -20
  ERROR_RECURSIONLIMIT*   = -21
  ERROR_NULLWSLIMIT*      = -22 ## No longer actually used
  ERROR_BADNEWLINE*       = -23
  ERROR_BADOFFSET*        = -24
  ERROR_SHORTUTF8*        = -25
  ERROR_SHORTUTF16*       = -25 ## Same for 8/16
  ERROR_RECURSELOOP*      = -26
  ERROR_JIT_STACKLIMIT*   = -27
  ERROR_BADMODE*          = -28
  ERROR_BADENDIANNESS*    = -29
  ERROR_DFA_BADRESTART*   = -30
  ERROR_JIT_BADOPTION*    = -31
  ERROR_BADLENGTH*        = -32
  ERROR_UNSET*            = -33

# Specific error codes for UTF-8 validity checks
const
  UTF8_ERR0*  =  0
  UTF8_ERR1*  =  1
  UTF8_ERR2*  =  2
  UTF8_ERR3*  =  3
  UTF8_ERR4*  =  4
  UTF8_ERR5*  =  5
  UTF8_ERR6*  =  6
  UTF8_ERR7*  =  7
  UTF8_ERR8*  =  8
  UTF8_ERR9*  =  9
  UTF8_ERR10* = 10
  UTF8_ERR11* = 11
  UTF8_ERR12* = 12
  UTF8_ERR13* = 13
  UTF8_ERR14* = 14
  UTF8_ERR15* = 15
  UTF8_ERR16* = 16
  UTF8_ERR17* = 17
  UTF8_ERR18* = 18
  UTF8_ERR19* = 19
  UTF8_ERR20* = 20
  UTF8_ERR21* = 21
  UTF8_ERR22* = 22 # Unused (was non-character)

# Specific error codes for UTF-16 validity checks
const
  UTF16_ERR0* = 0
  UTF16_ERR1* = 1
  UTF16_ERR2* = 2
  UTF16_ERR3* = 3
  UTF16_ERR4* = 4 # Unused (was non-character)

# Specific error codes for UTF-32 validity checks
const
  UTF32_ERR0* = 0
  UTF32_ERR1* = 1
  UTF32_ERR2* = 2 # Unused (was non-character)
  UTF32_ERR3* = 3

# Request types for pcre_fullinfo()
const
  INFO_OPTIONS*             =  0
  INFO_SIZE*                =  1
  INFO_CAPTURECOUNT*        =  2
  INFO_BACKREFMAX*          =  3
  INFO_FIRSTBYTE*           =  4
  INFO_FIRSTCHAR*           =  4 ## For backwards compatibility
  INFO_FIRSTTABLE*          =  5
  INFO_LASTLITERAL*         =  6
  INFO_NAMEENTRYSIZE*       =  7
  INFO_NAMECOUNT*           =  8
  INFO_NAMETABLE*           =  9
  INFO_STUDYSIZE*           = 10
  INFO_DEFAULT_TABLES*      = 11
  INFO_OKPARTIAL*           = 12
  INFO_JCHANGED*            = 13
  INFO_HASCRORLF*           = 14
  INFO_MINLENGTH*           = 15
  INFO_JIT*                 = 16
  INFO_JITSIZE*             = 17
  INFO_MAXLOOKBEHIND*       = 18
  INFO_FIRSTCHARACTER*      = 19
  INFO_FIRSTCHARACTERFLAGS* = 20
  INFO_REQUIREDCHAR*        = 21
  INFO_REQUIREDCHARFLAGS*   = 22
  INFO_MATCHLIMIT*          = 23
  INFO_RECURSIONLIMIT*      = 24
  INFO_MATCH_EMPTY*         = 25

# Request types for pcre_config(). Do not re-arrange, in order to remain
# compatible.
const
  CONFIG_UTF8*                   =  0
  CONFIG_NEWLINE*                =  1
  CONFIG_LINK_SIZE*              =  2
  CONFIG_POSIX_MALLOC_THRESHOLD* =  3
  CONFIG_MATCH_LIMIT*            =  4
  CONFIG_STACKRECURSE*           =  5
  CONFIG_UNICODE_PROPERTIES*     =  6
  CONFIG_MATCH_LIMIT_RECURSION*  =  7
  CONFIG_BSR*                    =  8
  CONFIG_JIT*                    =  9
  CONFIG_UTF16*                  = 10
  CONFIG_JITTARGET*              = 11
  CONFIG_UTF32*                  = 12
  CONFIG_PARENS_LIMIT*           = 13

# Request types for pcre_study(). Do not re-arrange, in order to remain
# compatible.
const
  STUDY_JIT_COMPILE*              = 0x0001
  STUDY_JIT_PARTIAL_SOFT_COMPILE* = 0x0002
  STUDY_JIT_PARTIAL_HARD_COMPILE* = 0x0004
  STUDY_EXTRA_NEEDED*             = 0x0008

# Bit flags for the pcre[16|32]_extra structure. Do not re-arrange or redefine
# these bits, just add new ones on the end, in order to remain compatible.
const
  EXTRA_STUDY_DATA*            = 0x0001
  EXTRA_MATCH_LIMIT*           = 0x0002
  EXTRA_CALLOUT_DATA*          = 0x0004
  EXTRA_TABLES*                = 0x0008
  EXTRA_MATCH_LIMIT_RECURSION* = 0x0010
  EXTRA_MARK*                  = 0x0020
  EXTRA_EXECUTABLE_JIT*        = 0x0040

# Types
type
  Pcre* = object
  Pcre16* = object
  Pcre32* = object
  JitStack* = object
  JitStack16* = object
  JitStack32* = object

when defined(nimHasStyleChecks):
  {.push styleChecks: off.}

# The structure for passing additional data to pcre_exec(). This is defined in
# such as way as to be extensible. Always add new fields at the end, in order
# to remain compatible.
type
  ExtraData* = object
    flags*: clong                  ## Bits for which fields are set
    study_data*: pointer           ## Opaque data from pcre_study()
    match_limit*: clong            ## Maximum number of calls to match()
    callout_data*: pointer         ## Data passed back in callouts
    tables*: pointer               ## Pointer to character tables
    match_limit_recursion*: clong  ## Max recursive calls to match()
    mark*: pointer                 ## For passing back a mark pointer
    executable_jit*: pointer       ## Contains a pointer to a compiled jit code

# The structure for passing out data via the pcre_callout_function. We use a
# structure so that new fields can be added on the end in future versions,
# without changing the API of the function, thereby allowing old clients to
# work without modification.
type
  CalloutBlock* = object
    version*         : cint       ## Identifies version of block
    # ------------------------ Version 0 -------------------------------
    callout_number*  : cint       ## Number compiled into pattern
    offset_vector*   : ptr cint   ## The offset vector
    subject*         : cstring    ## The subject being matched
    subject_length*  : cint       ## The length of the subject
    start_match*     : cint       ## Offset to start of this match attempt
    current_position*: cint       ## Where we currently are in the subject
    capture_top*     : cint       ## Max current capture
    capture_last*    : cint       ## Most recently closed capture
    callout_data*    : pointer    ## Data passed in with the call
    # ------------------- Added for Version 1 --------------------------
    pattern_position*: cint       ## Offset to next item in the pattern
    next_item_length*: cint       ## Length of next item in the pattern
    # ------------------- Added for Version 2 --------------------------
    mark*            : pointer    ## Pointer to current mark or NULL
    # ------------------------------------------------------------------

when defined(nimHasStyleChecks):
  {.pop.}

# User defined callback which provides a stack just before the match starts.
type
  JitCallback* = proc (a: pointer): ptr JitStack {.cdecl.}


when not defined(usePcreHeader):
  when hostOS == "windows":
    when defined(nimOldDlls):
      const pcreDll = "pcre.dll"
    elif defined(cpu64):
      const pcreDll = "pcre64.dll"
    else:
      const pcreDll = "pcre32.dll"
  elif hostOS == "macosx":
    const pcreDll = "libpcre(.3|.1|).dylib"
  else:
    const pcreDll = "libpcre.so(.3|.1|)"
  {.push dynlib: pcreDll.}
else:
  {.push header: "<pcre.h>".}

{.push cdecl, importc: "pcre_$1".}

# Exported PCRE functions

proc compile*(pattern: cstring,
              options: cint,
              errptr: ptr cstring,
              erroffset: ptr cint,
              tableptr: pointer): ptr Pcre

proc compile2*(pattern: cstring,
               options: cint,
               errorcodeptr: ptr cint,
               errptr: ptr cstring,
               erroffset: ptr cint,
               tableptr: pointer): ptr Pcre

proc config*(what: cint,
             where: pointer): cint

proc copy_named_substring*(code: ptr Pcre,
                           subject: cstring,
                           ovector: ptr cint,
                           stringcount: cint,
                           stringname: cstring,
                           buffer: cstring,
                           buffersize: cint): cint

proc copy_substring*(subject: cstring,
                     ovector: ptr cint,
                     stringcount: cint,
                     stringnumber: cint,
                     buffer: cstring,
                     buffersize: cint): cint

proc dfa_exec*(code: ptr Pcre,
               extra: ptr ExtraData,
               subject: cstring,
               length: cint,
               startoffset: cint,
               options: cint,
               ovector: ptr cint,
               ovecsize: cint,
               workspace: ptr cint,
               wscount: cint): cint

proc exec*(code: ptr Pcre,
           extra: ptr ExtraData,
           subject: cstring,
           length: cint,
           startoffset: cint,
           options: cint,
           ovector: ptr cint,
           ovecsize: cint): cint

proc jit_exec*(code: ptr Pcre,
               extra: ptr ExtraData,
               subject: cstring,
               length: cint,
               startoffset: cint,
               options: cint,
               ovector: ptr cint,
               ovecsize: cint,
               jstack: ptr JitStack): cint

proc free_substring*(stringptr: cstring)

proc free_substring_list*(stringptr: cstringArray)

proc fullinfo*(code: ptr Pcre,
               extra: ptr ExtraData,
               what: cint,
               where: pointer): cint

proc get_named_substring*(code: ptr Pcre,
                          subject: cstring,
                          ovector: ptr cint,
                          stringcount: cint,
                          stringname: cstring,
                          stringptr: cstringArray): cint

proc get_stringnumber*(code: ptr Pcre,
                       name: cstring): cint

proc get_stringtable_entries*(code: ptr Pcre,
                              name: cstring,
                              first: cstringArray,
                              last: cstringArray): cint

proc get_substring*(subject: cstring,
                    ovector: ptr cint,
                    stringcount: cint,
                    stringnumber: cint,
                    stringptr: cstringArray): cint

proc get_substring_list*(subject: cstring,
                         ovector: ptr cint,
                         stringcount: cint,
                         listptr: ptr cstringArray): cint

proc maketables*(): pointer

proc refcount*(code: ptr Pcre,
               adjust: cint): cint

proc study*(code: ptr Pcre,
            options: cint,
            errptr: ptr cstring): ptr ExtraData

proc free_study*(extra: ptr ExtraData)

proc version*(): cstring

# Utility functions for byte order swaps.

proc pattern_to_host_byte_order*(code: ptr Pcre,
                                 extra: ptr ExtraData,
                                 tables: pointer): cint

# JIT compiler related functions.

proc jit_stack_alloc*(startsize: cint,
                      maxsize: cint): ptr JitStack

proc jit_stack_free*(stack: ptr JitStack)

proc assign_jit_stack*(extra: ptr ExtraData,
                       callback: JitCallback,
                       data: pointer)

proc jit_free_unused_memory*()


# There was an odd function with `var cstring` instead of `ptr`
proc study*(code: ptr Pcre,
            options: cint,
            errptr: var cstring): ptr ExtraData {.deprecated.}

{.pop.}
{.pop.}


type
  PPcre* {.deprecated.} = ptr Pcre
  PJitStack* {.deprecated.} = ptr JitStack


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