# DEPRECATED : Use self.chars.last_index_of_from instead
fun last_index_of_from(item: Char, pos: Int): Int do return chars.last_index_of_from(item, pos)
+ # Concatenates `o` to `self`
+ #
+ # assert "hello" + "world" == "helloworld"
+ # assert "" + "hello" + "" == "hello"
+ fun +(o: Text): SELFTYPE is abstract
+
# Gets an iterator on the chars of self
#
# DEPRECATED : Use self.chars.iterator instead
end
return retarr.reversed
end
+
+ # Concatenates self `i` times
+ #
+ #~~~nit
+ # assert "abc" * 4 == "abcabcabcabc"
+ # assert "abc" * 1 == "abc"
+ # assert "abc" * 0 == ""
+ # var b = new Buffer
+ # b.append("天地")
+ # b = b * 4
+ # assert b == "天地天地天地天地"
+ #~~~
+ fun *(i: Int): SELFTYPE is abstract
+
+ # Insert `s` at `pos`.
+ #
+ #~~~nit
+ # assert "helloworld".insert_at(" ", 5) == "hello world"
+ # var b = new Buffer
+ # b.append("Hello世界")
+ # b = b.insert_at(" beautiful ", 5)
+ # assert b == "Hello beautiful 世界"
+ #~~~
+ fun insert_at(s: String, pos: Int): SELFTYPE is abstract
+
+ # Returns a reversed version of self
+ #
+ # assert "hello".reversed == "olleh"
+ # assert "bob".reversed == "bob"
+ # assert "".reversed == ""
+ fun reversed: SELFTYPE is abstract
+
+ # A upper case version of `self`
+ #
+ # assert "Hello World!".to_upper == "HELLO WORLD!"
+ fun to_upper: SELFTYPE is abstract
+
+ # A lower case version of `self`
+ #
+ # assert "Hello World!".to_lower == "hello world!"
+ fun to_lower : SELFTYPE is abstract
+
+ # Takes a camel case `self` and converts it to snake case
+ #
+ # assert "randomMethodId".to_snake_case == "random_method_id"
+ #
+ # The rules are the following:
+ #
+ # An uppercase is always converted to a lowercase
+ #
+ # assert "HELLO_WORLD".to_snake_case == "hello_world"
+ #
+ # An uppercase that follows a lowercase is prefixed with an underscore
+ #
+ # assert "HelloTheWORLD".to_snake_case == "hello_the_world"
+ #
+ # An uppercase that follows an uppercase and is followed by a lowercase, is prefixed with an underscore
+ #
+ # assert "HelloTHEWorld".to_snake_case == "hello_the_world"
+ #
+ # All other characters are kept as is; `self` does not need to be a proper CamelCased string.
+ #
+ # assert "=-_H3ll0Th3W0rld_-=".to_snake_case == "=-_h3ll0th3w0rld_-="
+ fun to_snake_case: SELFTYPE is abstract
+
+ # Takes a snake case `self` and converts it to camel case
+ #
+ # assert "random_method_id".to_camel_case == "randomMethodId"
+ #
+ # If the identifier is prefixed by an underscore, the underscore is ignored
+ #
+ # assert "_private_field".to_camel_case == "_privateField"
+ #
+ # If `self` is upper, it is returned unchanged
+ #
+ # assert "RANDOM_ID".to_camel_case == "RANDOM_ID"
+ #
+ # If there are several consecutive underscores, they are considered as a single one
+ #
+ # assert "random__method_id".to_camel_case == "randomMethodId"
+ fun to_camel_case: SELFTYPE is abstract
+
+ # Returns a capitalized `self`
+ #
+ # Letters that follow a letter are lowercased
+ # Letters that follow a non-letter are upcased.
+ #
+ # If `keep_upper = true`, already uppercase letters are not lowercased.
+ #
+ # SEE : `Char::is_letter` for the definition of letter.
+ #
+ # assert "jAVASCRIPT".capitalized == "Javascript"
+ # assert "i am root".capitalized == "I Am Root"
+ # assert "ab_c -ab0c ab\nc".capitalized == "Ab_C -Ab0C Ab\nC"
+ # assert "preserve my ACRONYMS".capitalized(keep_upper=true) == "Preserve My ACRONYMS"
+ fun capitalized(keep_upper: nullable Bool): SELFTYPE do
+ if length == 0 then return self
+
+ var buf = new Buffer.with_cap(length)
+ buf.capitalize(keep_upper=keep_upper, src=self)
+ return buf.to_s
+ end
end
# All kinds of array-based text representations.
redef fun to_s do return self
redef fun clone do return self
- # Concatenates `o` to `self`
- #
- # assert "hello" + "world" == "helloworld"
- # assert "" + "hello" + "" == "hello"
- fun +(o: Text): SELFTYPE is abstract
-
- # Concatenates self `i` times
- #
- # assert "abc" * 4 == "abcabcabcabc"
- # assert "abc" * 1 == "abc"
- # assert "abc" * 0 == ""
- fun *(i: Int): SELFTYPE is abstract
-
- # Insert `s` at `pos`.
- #
- # assert "helloworld".insert_at(" ", 5) == "hello world"
- fun insert_at(s: String, pos: Int): SELFTYPE is abstract
-
- redef fun substrings is abstract
-
- # Returns a reversed version of self
- #
- # assert "hello".reversed == "olleh"
- # assert "bob".reversed == "bob"
- # assert "".reversed == ""
- fun reversed: SELFTYPE is abstract
-
- # A upper case version of `self`
- #
- # assert "Hello World!".to_upper == "HELLO WORLD!"
- fun to_upper: SELFTYPE is abstract
-
- # A lower case version of `self`
- #
- # assert "Hello World!".to_lower == "hello world!"
- fun to_lower : SELFTYPE is abstract
-
- # Takes a camel case `self` and converts it to snake case
- #
- # assert "randomMethodId".to_snake_case == "random_method_id"
- #
- # The rules are the following:
- #
- # An uppercase is always converted to a lowercase
- #
- # assert "HELLO_WORLD".to_snake_case == "hello_world"
- #
- # An uppercase that follows a lowercase is prefixed with an underscore
- #
- # assert "HelloTheWORLD".to_snake_case == "hello_the_world"
- #
- # An uppercase that follows an uppercase and is followed by a lowercase, is prefixed with an underscore
- #
- # assert "HelloTHEWorld".to_snake_case == "hello_the_world"
- #
- # All other characters are kept as is; `self` does not need to be a proper CamelCased string.
- #
- # assert "=-_H3ll0Th3W0rld_-=".to_snake_case == "=-_h3ll0th3w0rld_-="
- fun to_snake_case: SELFTYPE
- do
- if self.is_lower then return self
-
- var new_str = new Buffer.with_cap(self.length)
- var prev_is_lower = false
- var prev_is_upper = false
-
- for i in [0..length[ do
- var char = chars[i]
- if char.is_lower then
- new_str.add(char)
- prev_is_lower = true
- prev_is_upper = false
- else if char.is_upper then
- if prev_is_lower then
- new_str.add('_')
- else if prev_is_upper and i+1 < length and chars[i+1].is_lower then
- new_str.add('_')
- end
- new_str.add(char.to_lower)
- prev_is_lower = false
- prev_is_upper = true
- else
- new_str.add(char)
- prev_is_lower = false
- prev_is_upper = false
- end
- end
- return new_str.to_s
- end
- # Takes a snake case `self` and converts it to camel case
- #
- # assert "random_method_id".to_camel_case == "randomMethodId"
- #
- # If the identifier is prefixed by an underscore, the underscore is ignored
- #
- # assert "_private_field".to_camel_case == "_privateField"
- #
- # If `self` is upper, it is returned unchanged
- #
- # assert "RANDOM_ID".to_camel_case == "RANDOM_ID"
- #
- # If there are several consecutive underscores, they are considered as a single one
- #
- # assert "random__method_id".to_camel_case == "randomMethodId"
- fun to_camel_case: SELFTYPE
- do
+ redef fun to_camel_case do
if self.is_upper then return self
- var new_str = new Buffer
- var is_first_char = true
- var follows_us = false
-
- for i in [0..length[ do
- var char = chars[i]
- if is_first_char then
- new_str.add(char)
- is_first_char = false
- else if char == '_' then
- follows_us = true
- else if follows_us then
- new_str.add(char.to_upper)
- follows_us = false
- else
- new_str.add(char)
- end
- end
-
+ var new_str = new Buffer.with_cap(length)
+ new_str.append self
+ new_str.camel_case
return new_str.to_s
end
- # Returns a capitalized `self`
- #
- # Letters that follow a letter are lowercased
- # Letters that follow a non-letter are upcased.
- #
- # If `keep_upper = true`, already uppercase letters are not lowercased.
- #
- # SEE : `Char::is_letter` for the definition of letter.
- #
- # assert "jAVASCRIPT".capitalized == "Javascript"
- # assert "i am root".capitalized == "I Am Root"
- # assert "ab_c -ab0c ab\nc".capitalized == "Ab_C -Ab0C Ab\nC"
- # assert "preserve my ACRONYMS".capitalized(keep_upper=true) == "Preserve My ACRONYMS"
- fun capitalized(keep_upper: nullable Bool): SELFTYPE do
- if length == 0 then return self
+ redef fun to_snake_case do
+ if self.is_lower then return self
- var buf = new Buffer.with_cap(length)
- buf.capitalize(keep_upper=keep_upper, src=self)
- return buf.to_s
+ var new_str = new Buffer.with_cap(self.length)
+ new_str.append self
+ new_str.snake_case
+ return new_str.to_s
end
end
# NOTE: Use only if sure about `from` and `length`, no checks
# or bound recalculation is done
fun append_substring_impl(s: Text, from, length: Int) do
- var pos = from
- for i in [0 .. length[ do
- self.add s[pos]
+ var max = from + length
+ for i in [from .. max[ do add s[i]
+ end
+
+ redef fun *(i) do
+ var ret = new Buffer.with_cap(byte_length * i)
+ for its in [0 .. i[ do ret.append self
+ return ret
+ end
+
+ redef fun insert_at(s, pos) do
+ var obuf = new Buffer.with_cap(byte_length + s.byte_length)
+ obuf.append_substring(self, 0, pos)
+ obuf.append s
+ obuf.append_substring(self, pos, length - pos)
+ return obuf
+ end
+
+ # Inserts `s` at position `pos`
+ #
+ #~~~nit
+ # var b = new Buffer
+ # b.append "美しい世界"
+ # b.insert(" nit ", 3)
+ # assert b == "美しい nit 世界"
+ #~~~
+ fun insert(s: Text, pos: Int) is abstract
+
+ # Inserts `c` at position `pos`
+ #
+ #~~~nit
+ # var b = new Buffer
+ # b.append "美しい世界"
+ # b.insert_char(' ', 3)
+ # assert b == "美しい 世界"
+ #~~~
+ fun insert_char(c: Char, pos: Int) is abstract
+
+ # Removes a substring from `self` at position `pos`
+ #
+ # NOTE: `length` defaults to 1, expressed in chars
+ #
+ #~~~nit
+ # var b = new Buffer
+ # b.append("美しい 世界")
+ # b.remove_at(3)
+ # assert b == "美しい世界"
+ # b.remove_at(1, 2)
+ # assert b == "美世界"
+ #~~~
+ fun remove_at(pos: Int, length: nullable Int) is abstract
+
+ redef fun reversed do
+ var ret = clone
+ ret.reverse
+ return ret
+ end
+
+ redef fun to_upper do
+ var ret = clone
+ ret.upper
+ return ret
+ end
+
+ redef fun to_lower do
+ var ret = clone
+ ret.lower
+ return ret
+ end
+
+ redef fun to_snake_case do
+ var ret = clone
+ ret.snake_case
+ return ret
+ end
+
+ # Takes a camel case `self` and converts it to snake case
+ #
+ # SEE: `to_snake_case`
+ fun snake_case do
+ if self.is_lower then return
+ var prev_is_lower = false
+ var prev_is_upper = false
+
+ var i = 0
+ while i < length do
+ var char = chars[i]
+ if char.is_lower then
+ prev_is_lower = true
+ prev_is_upper = false
+ else if char.is_upper then
+ if prev_is_lower then
+ insert_char('_', i)
+ i += 1
+ else if prev_is_upper and i + 1 < length and self[i + 1].is_lower then
+ insert_char('_', i)
+ i += 1
+ end
+ self[i] = char.to_lower
+ prev_is_lower = false
+ prev_is_upper = true
+ else
+ prev_is_lower = false
+ prev_is_upper = false
+ end
+ i += 1
+ end
+ end
+
+ redef fun to_camel_case
+ do
+ var new_str = clone
+ new_str.camel_case
+ return new_str
+ end
+
+ # Takes a snake case `self` and converts it to camel case
+ #
+ # SEE: `to_camel_case`
+ fun camel_case do
+ if is_upper then return
+
+ var underscore_count = 0
+
+ var pos = 1
+ while pos < length do
+ var char = self[pos]
+ if char == '_' then
+ underscore_count += 1
+ else if underscore_count > 0 then
+ pos -= underscore_count
+ remove_at(pos, underscore_count)
+ self[pos] = char.to_upper
+ underscore_count = 0
+ end
pos += 1
end
+ if underscore_count > 0 then remove_at(pos - underscore_count - 1, underscore_count)
+ end
+
+ redef fun capitalized(keep_upper) do
+ if length == 0 then return self
+
+ var buf = new Buffer.with_cap(byte_length)
+ buf.capitalize(keep_upper=keep_upper, src=self)
+ return buf
end
end
nitlanguage / nit.git / commitdiff