# String #
###############################################################################
-# Strings are arrays of characters.
-class String
-special AbstractArray[Char]
-special Comparable
-special StringCapable
-
- redef type OTHER: String
+abstract class AbstractString
+special AbstractArrayRead[Char]
+ readable private var _items: NativeString
- redef meth [](index) do return _items[index]
+ redef fun [](index) do return _items[index]
- redef meth []=(index, item)
+ # Create a substring.
+ #
+ # "abcd".substring(1, 2) # --> "bc"
+ # "abcd".substring(-1, 2) # --> "a"
+ # "abcd".substring(1, 0) # --> ""
+ # "abcd".substring(2, 5) # --> "cd"
+ fun substring(from: Int, count: Int): String
do
- if index == length then
- add(item)
- return
+ assert count >= 0
+ count += from
+ if from < 0 then from = 0
+ if count > length then count = length
+ if from < count then
+ var r = new Buffer.with_capacity(count - from)
+ while from < count do
+ r.push(_items[from])
+ from += 1
+ end
+ return r.to_s
+ else
+ return ""
end
- assert index >= 0 and index < length
- _items[index] = item
- end
-
- redef meth add(c)
- do
- if _capacity <= length then enlarge(length + 5)
- _items[length] = c
- _length += 1
end
- redef meth enlarge(cap)
+ # Create a substring with the string beginning at the 'from' position
+ #
+ # "abcd".substring(1) # --> "bcd"
+ # "abcd".substring(-1) # --> "abcd"
+ # "abcd".substring(2) # --> "cd"
+ fun substring_from(from: Int): String
do
- var c = _capacity
- if cap <= c then return
- while c <= cap do c = c * 2 + 2
- var a = calloc_string(c)
- _items.copy_to(a, length, 0, 0)
- _items = a
- _capacity = c
+ assert from < length
+ return substring(from, length - from)
end
- redef meth append(s)
+ # is this string a substring of the 'of' string from pos 'pos'
+ #
+ # "bc".is_substring("abcd",1) # --> true
+ # "bc".is_substring("abcd",2) # --> false
+ fun has_substring(str: String, pos: Int): Bool
do
- if s isa String then
- var sl = s.length
- if _capacity < length + sl then enlarge(length + sl)
- s.items.copy_to(_items, sl, 0, length)
- _length += sl
- else
- super
+ var itsindex = str.length - 1
+ var myindex = pos + itsindex
+ var myitems = _items
+ var itsitems = str._items
+ if myindex > length or itsindex > myindex then return false
+ while itsindex > 0 do
+ if myitems[myindex] != itsitems[itsindex] then return false
+ myindex -= myindex
+ itsindex -= itsindex
end
+ return true
end
- # The concatenation of `self' with `r'
- meth +(s: String): String
- do
- var r = new String.with_capacity(length + s.length)
- r.append(self)
- r.append(s)
- return r
- end
-
- # i repetitions of self
- meth *(i: Int): String
- do
- assert i >= 0
- var r = new String.with_capacity(length * i)
- while i > 0 do
- r.append(self)
- i -= 1
- end
- return r
- end
+ # Is this string prefixed by 'prefix'
+ #
+ # "abc".is_prefix("abcd") # --> true
+ # "bc".is_prefix("abcd") # --> false
+ fun has_prefix(prefix: String): Bool do return has_substring(prefix,0)
- # Clone.
- redef meth to_s: String do return new String.from(self)
+ # Is this string suffixed by 'suffix'
+ #
+ # "abcd".has_suffix("abc") # --> false
+ # "abcd".has_suffix("bcd") # --> true
+ fun has_suffix(suffix: String): Bool do return has_substring(suffix, length - suffix.length)
# If `self' contains only digits, return the corresponding integer
- meth to_i: Int
+ fun to_i: Int
do
# Shortcut
- return to_cstring.atoi
+ return to_s.to_cstring.atoi
end
- # If `self' contains only digits and alpha <= 'f', return the corresponding integer.
- meth to_hex: Int do return a_to(16)
+ # If `self' contains only digits and alpha <= 'f', return the corresponding integer.
+ fun to_hex: Int do return a_to(16)
# If `self' contains only digits and letters, return the corresponding integer in a given base
- meth a_to(base: Int) : Int
+ fun a_to(base: Int) : Int
do
var i = 0
var neg = false
-
+
for c in self
do
var v = c.to_i
end
end
+ # String to upper case
+ fun to_upper: String
+ do
+ var s = new Buffer.with_capacity(length)
+ for i in self do s.add(i.to_upper)
+ return s.to_s
+ end
+
+ # String to lower case
+ fun to_lower : String
+ do
+ var s = new Buffer.with_capacity(length)
+ for i in self do s.add(i.to_lower)
+ return s.to_s
+ end
+
+
+ redef fun output
+ do
+ var i = 0
+ while i < length do
+ _items[i].output
+ i += 1
+ end
+ end
+end
+
+
+class String
+special Comparable
+special AbstractString
+ redef type OTHER: String
+
+ # Create a new string from a given char *.
+ init with_native(nat: NativeString, size: Int)
+ do
+ assert size >= 0
+ _items = nat
+ _length = size
+ end
+
+ # Create a new string from a null terminated char *.
+ init from_cstring(str: NativeString)
+ do
+ var size = str.cstring_length
+ _items = str
+ _length = size
+ end
+
# Return a null terminated char *
- meth to_cstring: NativeString
+ fun to_cstring: NativeString
do
- self[length] = '\0'
- _length -= 1
return _items
end
- # Create a substring.
- #
- # "abcd".substring(1, 2) # --> "bc"
- # "abcd".substring(-1, 2) # --> "a"
- # "abcd".substring(1, 0) # --> ""
- # "abcd".substring(2, 5) # --> "cd"
- meth substring(from: Int, count: Int): String
+ redef fun ==(o)
do
- assert count >= 0
- count += from
- if from < 0 then from = 0
- if count > length then count = length
- if from < count then
- var r = new String.with_capacity(count - from)
- while from < count do
- r.push(_items[from])
- from += 1
+ if not o isa String or o is null then return false
+ var l = length
+ if o.length != l then return false
+ var i = 0
+ var it = _items
+ var oit = o._items
+ while i < l do
+ if it[i] != oit[i] then return false
+ i += 1
+ end
+ return true
+ end
+
+ redef fun <(s)
+ do
+ var i = 0
+ var l1 = length
+ var l2 = s.length
+ var n1 = _items
+ var n2 = s._items
+ while i < l1 and i < l2 do
+ var c1 = n1[i].ascii
+ var c2 = n2[i].ascii
+ if c1 < c2 then
+ return true
+ else if c2 < c1 then
+ return false
end
- return r
+ i += 1
+ end
+ if l1 < l2 then
+ return true
else
- return ""
+ return false
end
end
- # Create a substring with the string beginning at the 'from' position
- #
- # "abcd".substring(1) # --> "bcd"
- # "abcd".substring(-1) # --> "abcd"
- # "abcd".substring(2) # --> "cd"
- meth substring_from(from: Int): String
+ # The concatenation of `self' with `r'
+ fun +(s: String): String
do
- assert from < length
- return substring(from, length - from)
+ var r = new Buffer.with_capacity(length + s.length)
+ r.append(self)
+ r.append(s)
+ return r.to_s
end
- # is this string a substring of the 'of' string from pos 'pos'
- #
- # "bc".is_substring("abcd",1) # --> true
- # "bc".is_substring("abcd",2) # --> false
- meth has_substring(str: String, pos: Int): Bool
+ # i repetitions of self
+ fun *(i: Int): String
do
- var itsindex = str.length - 1
- var myindex = pos + itsindex
- var myitems = _items
- var itsitems = str._items
- if myindex > length or itsindex > myindex then return false
- while itsindex > 0 do
- if myitems[myindex] != itsitems[itsindex] then return false
- myindex -= myindex
- itsindex -= itsindex
+ assert i >= 0
+ var r = new Buffer.with_capacity(length * i)
+ while i > 0 do
+ r.append(self)
+ i -= 1
end
- return true
+ return r.to_s
end
- # Is this string prefixed by 'prefix'
- #
- # "abc".is_prefix("abcd") # --> true
- # "bc".is_prefix("abcd") # --> false
- meth has_prefix(prefix: String): Bool do return has_substring(prefix,0)
+ redef fun to_s do return self
+end
- # Is this string suffixed by 'suffix'
- #
- # "abcd".has_suffix("abc") # --> false
- # "abcd".has_suffix("bcd") # --> true
- meth has_suffix(suffix: String): Bool do return has_substring(suffix, length - suffix.length)
+# Strings are arrays of characters.
+class Buffer
+special AbstractString
+special Comparable
+special StringCapable
+special AbstractArray[Char]
+
+ redef type OTHER: String
+
+ redef fun []=(index, item)
+ do
+ if index == length then
+ add(item)
+ return
+ end
+ assert index >= 0 and index < length
+ _items[index] = item
+ end
+
+ redef fun add(c)
+ do
+ if _capacity <= length then enlarge(length + 5)
+ _items[length] = c
+ _length += 1
+ end
- redef meth <(s)
+ redef fun enlarge(cap)
+ do
+ var c = _capacity
+ if cap <= c then return
+ while c <= cap do c = c * 2 + 2
+ var a = calloc_string(c+1)
+ _items.copy_to(a, length, 0, 0)
+ _items = a
+ _capacity = c
+ end
+
+ redef fun append(s)
+ do
+ if s isa String then
+ var sl = s.length
+ if _capacity < length + sl then enlarge(length + sl)
+ s.items.copy_to(_items, sl, 0, length)
+ _length += sl
+ else
+ super
+ end
+ end
+
+ redef fun to_s: String
+ do
+ var l = length
+ var a = calloc_string(l+1)
+ _items.copy_to(a, l, 0, 0)
+
+ # Ensure the afterlast byte is '\0' to nul-terminated char *
+ a[length] = '\0'
+
+ return new String.with_native(a, length)
+ end
+
+ redef fun <(s)
do
var i = 0
var l1 = length
do
assert cap >= 0
# _items = new NativeString.calloc(cap)
- _items = calloc_string(cap)
+ _items = calloc_string(cap+1)
_capacity = cap
_length = 0
end
- # Create a new string from a given char *.
- init with_native(nat: NativeString, size: Int)
- do
- assert size >= 0
- _items = nat
- _capacity = size
- _length = size
- end
-
- # Create a new string from a null terminated char *.
- init from_cstring(str: NativeString)
+ redef fun ==(o)
do
- var size = str.cstring_length
- _items = str
- _capacity = size + 1 # Since there is a trailing \n
- _length = size
- end
-
- # Create a string of `count' chararter `c'
- init filled_with(c: Char, count: Int)
- do
- with_capacity(count)
- var i = 0
- while i < count do
- _items[i] = c
- i += 1
- end
- _length = count
- end
-
- redef meth output
- do
- var i = 0
- while i < length do
- _items[i].output
- i += 1
- end
- end
-
- redef meth ==(o)
- do
- if not o isa String or o is null then return false
- assert o isa String
+ if not o isa Buffer or o is null then return false
var l = length
if o.length != l then return false
var i = 0
return true
end
- # String to upper case
- meth to_upper: String
- do
- var s = new String.with_capacity(length)
- for i in self do s.add(i.to_upper)
- return s
- end
-
- # String to lower case
- meth to_lower : String
- do
- var s = new String.with_capacity(length)
- for i in self do s.add(i.to_lower)
- return s
- end
-
- readable private attr _items: NativeString
- readable private attr _capacity: Int
+ readable private var _capacity: Int
end
###############################################################################
###############################################################################
redef class Object
- # meth class_name: String is extern intern # The name of the class
+ # fun class_name: String is extern intern # The name of the class
# User redeable representation of `self'.
- meth to_s: String do return inspect
+ fun to_s: String do return inspect
# Developper readable representation of `self'.
# Usualy, it uses the form "<CLASSNAME:#OBJECTID bla bla bla>"
- meth inspect: String
+ fun inspect: String
do
var r = inspect_head
- r.add('>')
+ # r.add('>')
return r
end
# Return "<CLASSNAME:#OBJECTID".
# This fuction is mainly used with the redefinition of the inspect(0) method
- protected meth inspect_head: String
+ protected fun inspect_head: String
do
return "<{object_id.to_hex}"
end
- protected meth args: IndexedCollection[String]
+ protected fun args: IndexedCollection[String]
do
return sys.args
end
end
redef class Bool
- redef meth to_s
+ redef fun to_s
do
if self then
return once "true"
end
redef class Int
- meth fill_string(s: String, base: Int, signed: Bool)
+ fun fill_buffer(s: Buffer, base: Int, signed: Bool)
# Fill `s' with the digits in base 'base' of `self' (and with the '-' sign if 'signed' and negative).
# assume < to_c max const of char
do
end
# return displayable int in base 10 and signed
- redef meth to_s do return to_base(10,true)
+ redef fun to_s do return to_base(10,true)
# return displayable int in hexadecimal (unsigned (not now))
- meth to_hex: String do return to_base(16,false)
+ fun to_hex: String do return to_base(16,false)
# return displayable int in base base and signed
- meth to_base(base: Int, signed: Bool): String
+ fun to_base(base: Int, signed: Bool): String
do
var l = digit_count(base)
- var s = new String.filled_with(' ', l)
- fill_string(s, base, signed)
- return s
+ var s = new Buffer.from(" " * l)
+ fill_buffer(s, base, signed)
+ return s.to_s
end
end
redef class Float
- redef meth to_s do return to_precision(6)
+ redef fun to_s do return to_precision(6)
# `self' representation with `nb' digits after the '.'.
- meth to_precision(nb: Int): String
+ fun to_precision(nb: Int): String
do
if nb == 0 then return to_i.to_s
end
redef class Char
- redef meth to_s
+ redef fun to_s
do
- var s = new String.with_capacity(1)
+ var s = new Buffer.with_capacity(1)
s[0] = self
- return s
+ return s.to_s
end
end
redef class Collection[E]
# Concatenate elements.
- redef meth to_s
+ redef fun to_s
do
- var s = new String
+ var s = new Buffer
for e in self do if e != null then s.append(e.to_s)
- return s
+ return s.to_s
end
# Concatenate and separate each elements with `sep'.
- meth join(sep: String): String
+ fun join(sep: String): String
do
if is_empty then return ""
- var s = new String # Result
+ var s = new Buffer # Result
# Concat first item
var i = iterator
if e != null then s.append(e.to_s)
i.next
end
- return s
+ return s.to_s
+ end
+end
+
+redef class Array[E]
+ # Fast implementation
+ redef fun to_s
+ do
+ var s = new Buffer
+ var i = 0
+ var l = length
+ while i < l do
+ var e = self[i]
+ if e != null then s.append(e.to_s)
+ i += 1
+ end
+ return s.to_s
end
end
redef class Map[K,V]
# Concatenate couple of 'key value' separate by 'couple_sep' and separate each couple with `sep'.
- meth map_join(sep: String, couple_sep: String): String
+ fun map_join(sep: String, couple_sep: String): String
do
if is_empty then return ""
- var s = new String # Result
+ var s = new Buffer # Result
# Concat first item
var i = iterator
if e != null then s.append("{k}{couple_sep}{e}")
i.next
end
- return s
+ return s.to_s
end
end
# Native strings are simple C char *
class NativeString
- meth [](index: Int): Char is intern
- meth []=(index: Int, item: Char) is intern
- meth copy_to(dest: NativeString, length: Int, from: Int, to: Int) is intern
+ fun [](index: Int): Char is intern
+ fun []=(index: Int, item: Char) is intern
+ fun copy_to(dest: NativeString, length: Int, from: Int, to: Int) is intern
# Position of the first nul character.
- meth cstring_length: Int
+ fun cstring_length: Int
do
var l = 0
while self[l] != '\0' do l += 1
return l
end
- meth atoi: Int is intern
+ fun atoi: Int is intern
end
# StringCapable objects can create native strings
class StringCapable
- protected meth calloc_string(size: Int): NativeString is intern
+ protected fun calloc_string(size: Int): NativeString is intern
end
redef class Sys
- attr _args_cache: IndexedCollection[String]
+ var _args_cache: nullable IndexedCollection[String]
- redef meth args: IndexedCollection[String]
+ redef fun args: IndexedCollection[String]
do
if _args_cache == null then init_args
- return _args_cache
+ return _args_cache.as(not null)
end
-
+
# The name of the program as given by the OS
- meth program_name: String
+ fun program_name: String
do
return new String.from_cstring(native_argv(0))
end
# Initialize `args' with the contents of `native_argc' and `native_argv'.
- private meth init_args
+ private fun init_args
do
var argc = native_argc
var args = new Array[String].with_capacity(0)
_args_cache = args
end
- private meth native_argc: Int is extern "kernel_Sys_Sys_native_argc_0" # First argument of the main C function.
+ private fun native_argc: Int is extern "kernel_Sys_Sys_native_argc_0" # First argument of the main C function.
- private meth native_argv(i: Int): NativeString is extern "kernel_Sys_Sys_native_argv_1" # Second argument of the main C function.
+ private fun native_argv(i: Int): NativeString is extern "kernel_Sys_Sys_native_argv_1" # Second argument of the main C function.
end
nitlanguage / nit.git / blobdiff