Merge pull request #1967 from def-/more-renames

More renames
This commit is contained in:
Varriount
2015-01-16 21:27:07 -05:00
25 changed files with 237 additions and 237 deletions

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@@ -31,13 +31,13 @@ documentation with only their well-documented code.
Example:
.. code-block:: nim
type TPerson* = object
type Person* = object
## This type contains a description of a person
name: string
age: int
Outputs::
TPerson* = object
Person* = object
name: string
age: int
@@ -268,8 +268,8 @@ The relationship of type to suffix is made by the proc ``complexName`` in the
``compiler/docgen.nim`` file. Here are some examples of complex names for
symbols in the `system module <system.html>`_.
* ``type TSignedInt = int | int8 | int16 | int32 | int64`` **=>**
`#TSignedInt <system.html#TSignedInt>`_
* ``type SignedInt = int | int8 | int16 | int32 | int64`` **=>**
`#SignedInt <system.html#SignedInt>`_
* ``var globalRaiseHook: proc (e: ref E_Base): bool {.nimcall.}`` **=>**
`#globalRaiseHook <system.html#globalRaiseHook>`_
* ``const NimVersion = "0.0.0"`` **=>**
@@ -307,7 +307,7 @@ columns is:
Nim's rules (eg. \`^\` like in `the actors module
<actors.html#^,ptr.TChannel[T]>`_).
2. Base filename plus anchor hyper link (eg.
``algorithm.html#*,int,TSortOrder``).
``algorithm.html#*,int,SortOrder``).
3. Optional human readable string to display as hyper link. If the value is not
present or is the empty string, the hyper link will be rendered
using the term. Prefix whitespace indicates that this entry is

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@@ -173,7 +173,7 @@ The template engine is quite flexible. It is easy to produce a procedure that
writes the template code directly to a file::
#! stdtmpl(emit="f.write") | standard
#proc writeHTMLPage(f: TFile, title, currentTab, content: string,
#proc writeHTMLPage(f: File, title, currentTab, content: string,
# tabs: openArray[string]) =
<head><title>$title</title></head>
<body>

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@@ -213,7 +213,7 @@ tab characters (``\t``). The values of each column are:
``proj.symbolName``.
4. Type/signature. For variables and enums this will contain the
type of the symbol, for procs, methods and templates this will
contain the full unique signature (e.g. ``proc (TFile)``).
contain the full unique signature (e.g. ``proc (File)``).
5. Full path to the file containing the symbol.
6. Line where the symbol is located in the file. Lines start to
count at **1**.
@@ -258,8 +258,8 @@ skEnumField
.. code-block:: nim
Open(filename, fmWrite)
--> col 2: system.TFileMode.fmWrite
col 3: TFileMode
--> col 2: system.FileMode.fmWrite
col 3: FileMode
col 7: ""
@@ -296,7 +296,7 @@ posterior instances of the iterator.
text = "some text"
letters = toSeq(runes(text))
--> col 2: unicode.runes
col 3: iterator (string): TRune
col 3: iterator (string): Rune
col 7: "iterates over any unicode character of the string `s`."
@@ -423,7 +423,7 @@ returned by idetools returns also the pragmas for the proc.
.. code-block:: nim
Open(filename, fmWrite)
--> col 2: system.Open
col 3: proc (var TFile, string, TFileMode, int): bool
col 3: proc (var File, string, FileMode, int): bool
col 7:
"Opens a file named `filename` with given `mode`.
@@ -487,9 +487,9 @@ skType
.. code-block:: nim
proc writeTempFile() =
var output: TFile
--> col 2: system.TFile
col 3: TFile
var output: File
--> col 2: system.File
col 3: File
col 7: ""
@@ -502,11 +502,11 @@ skVar
.. code-block:: nim
proc writeTempFile() =
var output: TFile
var output: File
output.open("/tmp/somefile", fmWrite)
output.write("test")
--> col 2: $MODULE.writeTempFile.output
col 3: TFile
col 3: File
col 7: ""

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@@ -29,9 +29,9 @@ compatibility:
.. code-block:: nim
type
TCallback = proc (s: string) {.raises: [IOError].}
Callback = proc (s: string) {.raises: [IOError].}
var
c: TCallback
c: Callback
proc p(x: string) =
raise newException(OSError, "OS")

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@@ -57,7 +57,7 @@ instructs the compiler to pass the type by value to procs:
.. code-block:: nim
type
TVector {.bycopy, pure.} = object
Vector {.bycopy, pure.} = object
x, y, z: float

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@@ -9,17 +9,17 @@ The following example shows a generic binary tree can be modelled:
.. code-block:: nim
type
TBinaryTree[T] = object # TBinaryTree is a generic type with
BinaryTreeObj[T] = object # BinaryTreeObj is a generic type with
# with generic param ``T``
le, ri: ref TBinaryTree[T] # left and right subtrees; may be nil
le, ri: BinaryTree[T] # left and right subtrees; may be nil
data: T # the data stored in a node
PBinaryTree[T] = ref TBinaryTree[T] # a shorthand for notational convenience
BinaryTree[T] = ref BinaryTreeObj[T] # a shorthand for notational convenience
proc newNode[T](data: T): PBinaryTree[T] = # constructor for a node
proc newNode[T](data: T): BinaryTree[T] = # constructor for a node
new(result)
result.data = data
proc add[T](root: var PBinaryTree[T], n: PBinaryTree[T]) =
proc add[T](root: var BinaryTree[T], n: BinaryTree[T]) =
if root == nil:
root = n
else:
@@ -40,7 +40,7 @@ The following example shows a generic binary tree can be modelled:
return
it = it.ri
iterator inorder[T](root: PBinaryTree[T]): T =
iterator inorder[T](root: BinaryTree[T]): T =
# inorder traversal of a binary tree
# recursive iterators are not yet implemented, so this does not work in
# the current compiler!
@@ -49,7 +49,7 @@ The following example shows a generic binary tree can be modelled:
if root.ri != nil: yield inorder(root.ri)
var
root: PBinaryTree[string] # instantiate a PBinaryTree with the type string
root: BinaryTree[string] # instantiate a BinaryTree with the type string
add(root, newNode("hallo")) # instantiates generic procs ``newNode`` and
add(root, newNode("world")) # ``add``
for str in inorder(root):
@@ -64,10 +64,10 @@ therefore very useful for type specialization within generic code:
.. code-block:: nim
type
TTable[TKey, TValue] = object
keys: seq[TKey]
values: seq[TValue]
when not (TKey is string): # nil value for strings used for optimization
Table[Key, Value] = object
keys: seq[Key]
values: seq[Value]
when not (Key is string): # nil value for strings used for optimization
deletedKeys: seq[bool]
@@ -127,9 +127,9 @@ more complex type classes:
.. code-block:: nim
# create a type class that will match all tuple and object types
type TRecordType = tuple or object
type RecordType = tuple or object
proc printFields(rec: TRecordType) =
proc printFields(rec: RecordType) =
for key, value in fieldPairs(rec):
echo key, " = ", value
@@ -175,11 +175,11 @@ type parameters of the matched generic type. They can be easily accessed using
the dot syntax:
.. code-block:: nim
type TMatrix[T, Rows, Columns] = object
type Matrix[T, Rows, Columns] = object
...
proc `[]`(m: TMatrix, row, col: int): TMatrix.T =
m.data[col * high(TMatrix.Columns) + row]
proc `[]`(m: Matrix, row, col: int): Matrix.T =
m.data[col * high(Matrix.Columns) + row]
Alternatively, the `type` operator can be used over the proc params for similar
effect when anonymous or distinct type classes are used.
@@ -195,7 +195,7 @@ type, this results in another more specific type class:
# seq[T1] is the same as just `seq`, but T1 will be allowed to bind
# to a single type, while the signature is being matched
TMatrix[Ordinal] # Any TMatrix instantiation using integer values
Matrix[Ordinal] # Any Matrix instantiation using integer values
As seen in the previous example, in such instantiations, it's not necessary to
supply all type parameters of the generic type, because any missing ones will
@@ -292,18 +292,18 @@ at definition and the context at instantiation are considered:
.. code-block:: nim
type
TIndex = distinct int
Index = distinct int
proc `==` (a, b: TIndex): bool {.borrow.}
proc `==` (a, b: Index): bool {.borrow.}
var a = (0, 0.TIndex)
var b = (0, 0.TIndex)
var a = (0, 0.Index)
var b = (0, 0.Index)
echo a == b # works!
In the example the generic ``==`` for tuples (as defined in the system module)
uses the ``==`` operators of the tuple's components. However, the ``==`` for
the ``TIndex`` type is defined *after* the ``==`` for tuples; yet the example
the ``Index`` type is defined *after* the ``==`` for tuples; yet the example
compiles as the instantiation takes the currently defined symbols into account
too.

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@@ -261,9 +261,9 @@ A character is not an Unicode character but a single byte. The reason for this
is efficiency: for the overwhelming majority of use-cases, the resulting
programs will still handle UTF-8 properly as UTF-8 was specially designed for
this. Another reason is that Nim can thus support ``array[char, int]`` or
``set[char]`` efficiently as many algorithms rely on this feature. The `TRune`
``set[char]`` efficiently as many algorithms rely on this feature. The `Rune`
type is used for Unicode characters, it can represent any Unicode character.
``TRune`` is declared in the `unicode module <unicode.html>`_.
``Rune`` is declared in the `unicode module <unicode.html>`_.
Numerical constants

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@@ -128,22 +128,22 @@ modules don't need to import a module's dependencies:
.. code-block:: nim
# module B
type TMyObject* = object
type MyObject* = object
.. code-block:: nim
# module A
import B
export B.TMyObject
export B.MyObject
proc `$`*(x: TMyObject): string = "my object"
proc `$`*(x: MyObject): string = "my object"
.. code-block:: nim
# module C
import A
# B.TMyObject has been imported implicitly here:
var x: TMyObject
# B.MyObject has been imported implicitly here:
var x: MyObject
echo($x)

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@@ -89,12 +89,12 @@ collector to not consider objects of this type as part of a cycle:
.. code-block:: nim
type
PNode = ref TNode
TNode {.acyclic, final.} = object
left, right: PNode
Node = ref NodeObj
NodeObj {.acyclic, final.} = object
left, right: Node
data: string
In the example a tree structure is declared with the ``TNode`` type. Note that
In the example a tree structure is declared with the ``Node`` type. Note that
the type definition is recursive and the GC has to assume that objects of
this type may form a cyclic graph. The ``acyclic`` pragma passes the
information that this cannot happen to the GC. If the programmer uses the
@@ -106,9 +106,9 @@ memory, but nothing worse happens.
.. code-block:: nim
type
PNode = acyclic ref TNode
TNode = object
left, right: PNode
Node = acyclic ref NodeObj
NodeObj = object
left, right: Node
data: string
@@ -129,13 +129,13 @@ structure:
.. code-block:: nim
type
TNodeKind = enum nkLeaf, nkInner
TNode {.final, shallow.} = object
case kind: TNodeKind
NodeKind = enum nkLeaf, nkInner
Node {.final, shallow.} = object
case kind: NodeKind
of nkLeaf:
strVal: string
of nkInner:
children: seq[TNode]
children: seq[Node]
pure pragma

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@@ -121,21 +121,21 @@ different; for this a special setter syntax is needed:
.. code-block:: nim
type
TSocket* = object of TObject
Socket* = object of RootObj
FHost: int # cannot be accessed from the outside of the module
# the `F` prefix is a convention to avoid clashes since
# the accessors are named `host`
proc `host=`*(s: var TSocket, value: int) {.inline.} =
proc `host=`*(s: var Socket, value: int) {.inline.} =
## setter of hostAddr
s.FHost = value
proc host*(s: TSocket): int {.inline.} =
proc host*(s: Socket): int {.inline.} =
## getter of hostAddr
s.FHost
var
s: TSocket
s: Socket
s.host = 34 # same as `host=`(s, 34)

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@@ -118,11 +118,11 @@ initialized and does not rely on syntactic properties:
.. code-block:: nim
type
TMyObject = object {.requiresInit.}
MyObject = object {.requiresInit.}
proc p() =
# the following is valid:
var x: TMyObject
var x: MyObject
if someCondition():
x = a()
else:

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@@ -67,7 +67,7 @@ special ``:`` syntax:
.. code-block:: nim
template withFile(f, fn, mode: expr, actions: stmt): stmt {.immediate.} =
var f: TFile
var f: File
if open(f, fn, mode):
try:
actions
@@ -140,12 +140,12 @@ shadowed by the same argument name even when fully qualified:
# module 'm'
type
TLev = enum
Lev = enum
levA, levB
var abclev = levB
template tstLev(abclev: TLev) =
template tstLev(abclev: Lev) =
echo abclev, " ", m.abclev
tstLev(levA)
@@ -157,12 +157,12 @@ But the global symbol can properly be captured by a ``bind`` statement:
# module 'm'
type
TLev = enum
Lev = enum
levA, levB
var abclev = levB
template tstLev(abclev: TLev) =
template tstLev(abclev: Lev) =
bind m.abclev
echo abclev, " ", m.abclev
@@ -202,7 +202,7 @@ template parameter, it is an inject'ed symbol:
.. code-block:: nim
template withFile(f, fn, mode: expr, actions: stmt): stmt {.immediate.} =
block:
var f: TFile # since 'f' is a template param, it's injected implicitly
var f: File # since 'f' is a template param, it's injected implicitly
...
withFile(txt, "ttempl3.txt", fmWrite):

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@@ -223,21 +223,21 @@ all the arguments, but also the matched operators in reverse polish notation:
import macros
type
TMatrix = object
Matrix = object
dummy: int
proc `*`(a, b: TMatrix): TMatrix = discard
proc `+`(a, b: TMatrix): TMatrix = discard
proc `-`(a, b: TMatrix): TMatrix = discard
proc `$`(a: TMatrix): string = result = $a.dummy
proc mat21(): TMatrix =
proc `*`(a, b: Matrix): Matrix = discard
proc `+`(a, b: Matrix): Matrix = discard
proc `-`(a, b: Matrix): Matrix = discard
proc `$`(a: Matrix): string = result = $a.dummy
proc mat21(): Matrix =
result.dummy = 21
macro optM{ (`+`|`-`|`*`) ** a }(a: TMatrix): expr =
macro optM{ (`+`|`-`|`*`) ** a }(a: Matrix): expr =
echo treeRepr(a)
result = newCall(bindSym"mat21")
var x, y, z: TMatrix
var x, y, z: Matrix
echo x + y * z - x
@@ -267,7 +267,7 @@ parameter is of the type ``varargs`` it is treated specially and it can match
template optWrite{
write(f, x)
((write|writeln){w})(f, y)
}(x, y: varargs[expr], f: TFile, w: expr) =
}(x, y: varargs[expr], f: File, w: expr) =
w(f, x, y)
@@ -294,7 +294,7 @@ The following example shows how some form of hoisting can be implemented:
.. code-block:: nim
import pegs
template optPeg{peg(pattern)}(pattern: string{lit}): TPeg =
template optPeg{peg(pattern)}(pattern: string{lit}): Peg =
var gl {.global, gensym.} = peg(pattern)
gl
@@ -341,21 +341,21 @@ The ``call`` constraint is particularly useful to implement a move
optimization for types that have copying semantics:
.. code-block:: nim
proc `[]=`*(t: var TTable, key: string, val: string) =
proc `[]=`*(t: var Table, key: string, val: string) =
## puts a (key, value)-pair into `t`. The semantics of string require
## a copy here:
let idx = findInsertionPosition(key)
t[idx] = key
t[idx] = val
proc `[]=`*(t: var TTable, key: string{call}, val: string{call}) =
proc `[]=`*(t: var Table, key: string{call}, val: string{call}) =
## puts a (key, value)-pair into `t`. Optimized version that knows that
## the strings are unique and thus don't need to be copied:
let idx = findInsertionPosition(key)
shallowCopy t[idx], key
shallowCopy t[idx], val
var t: TTable
var t: Table
# overloading resolution ensures that the optimized []= is called here:
t[f()] = g()

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@@ -49,17 +49,17 @@ can then only be used in *destructible contexts* and as parameters:
.. code-block:: nim
type
TMyObj = object
MyObj = object
x, y: int
p: pointer
proc destroy(o: var TMyObj) {.override.} =
proc destroy(o: var MyObj) {.override.} =
if o.p != nil: dealloc o.p
proc open: TMyObj =
result = TMyObj(x: 1, y: 2, p: alloc(3))
proc open: MyObj =
result = MyObj(x: 1, y: 2, p: alloc(3))
proc work(o: TMyObj) =
proc work(o: MyObj) =
echo o.x
# No destructor invoked here for 'o' as 'o' is a parameter.

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@@ -5,15 +5,15 @@ Example:
.. code-block:: nim
type # example demonstrating mutually recursive types
PNode = ref TNode # a traced pointer to a TNode
TNode = object
le, ri: PNode # left and right subtrees
sym: ref TSym # leaves contain a reference to a TSym
Node = ref NodeObj # a traced pointer to a NodeObj
NodeObj = object
le, ri: Node # left and right subtrees
sym: ref Sym # leaves contain a reference to a Sym
TSym = object # a symbol
name: string # the symbol's name
line: int # the line the symbol was declared in
code: PNode # the symbol's abstract syntax tree
Sym = object # a symbol
name: string # the symbol's name
line: int # the line the symbol was declared in
code: Node # the symbol's abstract syntax tree
A type section begins with the ``type`` keyword. It contains multiple
type definitions. A type definition binds a type to a name. Type definitions

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@@ -10,7 +10,7 @@ As their name suggests, static params must be known at compile-time:
.. code-block:: nim
proc precompiledRegex(pattern: static[string]): TRegEx =
proc precompiledRegex(pattern: static[string]): RegEx =
var res {.global.} = re(pattern)
return res
@@ -35,7 +35,7 @@ predicate:
# The following proc will be compiled once for each unique static
# value and also once for the case handling all run-time values:
proc re(pattern: semistatic[string]): TRegEx =
proc re(pattern: semistatic[string]): RegEx =
when isStatic(pattern):
result = precompiledRegex(pattern)
else:
@@ -74,8 +74,8 @@ instantiation type using the param name:
echo "allocating ", T.name
new(result)
var n = TNode.new
var tree = new(TBinaryTree[int])
var n = Node.new
var tree = new(BinaryTree[int])
When multiple typedesc params are present, they act like a distinct type class
(i.e. they will bind freely to different types). To force a bind-once behavior

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@@ -257,8 +257,8 @@ the resulting programs will still handle UTF-8 properly as UTF-8 was specially
designed for this.
Another reason is that Nim can support ``array[char, int]`` or
``set[char]`` efficiently as many algorithms rely on this feature. The
`TRune` type is used for Unicode characters, it can represent any Unicode
character. ``TRune`` is declared in the `unicode module <unicode.html>`_.
`Rune` type is used for Unicode characters, it can represent any Unicode
character. ``Rune`` is declared in the `unicode module <unicode.html>`_.
@@ -591,38 +591,38 @@ An example:
# This is an example how an abstract syntax tree could be modelled in Nim
type
TNodeKind = enum # the different node types
NodeKind = enum # the different node types
nkInt, # a leaf with an integer value
nkFloat, # a leaf with a float value
nkString, # a leaf with a string value
nkAdd, # an addition
nkSub, # a subtraction
nkIf # an if statement
PNode = ref TNode
TNode = object
case kind: TNodeKind # the ``kind`` field is the discriminator
Node = ref NodeObj
NodeObj = object
case kind: NodeKind # the ``kind`` field is the discriminator
of nkInt: intVal: int
of nkFloat: floatVal: float
of nkString: strVal: string
of nkAdd, nkSub:
leftOp, rightOp: PNode
leftOp, rightOp: Node
of nkIf:
condition, thenPart, elsePart: PNode
condition, thenPart, elsePart: Node
# create a new case object:
var n = PNode(kind: nkIf, condition: nil)
var n = Node(kind: nkIf, condition: nil)
# accessing n.thenPart is valid because the ``nkIf`` branch is active:
n.thenPart = PNode(kind: nkFloat, floatVal: 2.0)
n.thenPart = Node(kind: nkFloat, floatVal: 2.0)
# the following statement raises an `EInvalidField` exception, because
# the following statement raises an `FieldError` exception, because
# n.kind's value does not fit and the ``nkString`` branch is not active:
n.strVal = ""
# invalid: would change the active object branch:
n.kind = nkInt
var x = PNode(kind: nkAdd, leftOp: PNode(kind: nkInt, intVal: 4),
rightOp: PNode(kind: nkInt, intVal: 2))
var x = Node(kind: nkAdd, leftOp: Node(kind: nkInt, intVal: 4),
rightOp: Node(kind: nkInt, intVal: 2))
# valid: does not change the active object branch:
x.kind = nkSub
@@ -672,13 +672,13 @@ dereferencing operations for reference types:
.. code-block:: nim
type
PNode = ref TNode
TNode = object
le, ri: PNode
Node = ref NodeObj
NodeObj = object
le, ri: Node
data: int
var
n: PNode
n: Node
new(n)
n.data = 9
# no need to write n[].data; in fact n[].data is highly discouraged!
@@ -717,10 +717,10 @@ memory manually:
.. code-block:: nim
type
TData = tuple[x, y: int, s: string]
Data = tuple[x, y: int, s: string]
# allocate memory for TData on the heap:
var d = cast[ptr TData](alloc0(sizeof(TData)))
# allocate memory for Data on the heap:
var d = cast[ptr Data](alloc0(sizeof(Data)))
# create a new string on the garbage collected heap:
d.s = "abc"
@@ -736,7 +736,7 @@ never be freed. The example also demonstrates two important features for low
level programming: the ``sizeof`` proc returns the size of a type or value
in bytes. The ``cast`` operator can circumvent the type system: the compiler
is forced to treat the result of the ``alloc0`` call (which returns an untyped
pointer) as if it would have the type ``ptr TData``. Casting should only be
pointer) as if it would have the type ``ptr Data``. Casting should only be
done if it is unavoidable: it breaks type safety and bugs can lead to
mysterious crashes.
@@ -855,13 +855,13 @@ Examples:
.. code-block:: nim
type
TOnMouseMove = proc (x, y: int) {.closure.}
OnMouseMove = proc (x, y: int) {.closure.}
proc onMouseMove(mouseX, mouseY: int) =
# has default calling convention
echo "x: ", mouseX, " y: ", mouseY
proc setOnMouseMove(mouseMoveEvent: TOnMouseMove) = discard
proc setOnMouseMove(mouseMoveEvent: OnMouseMove) = discard
# ok, 'onMouseMove' has the default calling convention, which is compatible
# to 'closure':
@@ -962,33 +962,33 @@ types are a perfect tool to model different currencies:
.. code-block:: nim
type
TDollar = distinct int
TEuro = distinct int
Dollar = distinct int
Euro = distinct int
var
d: TDollar
e: TEuro
d: Dollar
e: Euro
echo d + 12
# Error: cannot add a number with no unit and a ``TDollar``
# Error: cannot add a number with no unit and a ``Dollar``
Unfortunately, ``d + 12.TDollar`` is not allowed either,
because ``+`` is defined for ``int`` (among others), not for ``TDollar``. So
Unfortunately, ``d + 12.Dollar`` is not allowed either,
because ``+`` is defined for ``int`` (among others), not for ``Dollar``. So
a ``+`` for dollars needs to be defined:
.. code-block::
proc `+` (x, y: TDollar): TDollar =
result = TDollar(int(x) + int(y))
proc `+` (x, y: Dollar): Dollar =
result = Dollar(int(x) + int(y))
It does not make sense to multiply a dollar with a dollar, but with a
number without unit; and the same holds for division:
.. code-block::
proc `*` (x: TDollar, y: int): TDollar =
result = TDollar(int(x) * y)
proc `*` (x: Dollar, y: int): Dollar =
result = Dollar(int(x) * y)
proc `*` (x: int, y: TDollar): TDollar =
result = TDollar(x * int(y))
proc `*` (x: int, y: Dollar): Dollar =
result = Dollar(x * int(y))
proc `div` ...
@@ -999,15 +999,15 @@ The pragma `borrow`:idx: has been designed to solve this problem; in principle
it generates the above trivial implementations:
.. code-block:: nim
proc `*` (x: TDollar, y: int): TDollar {.borrow.}
proc `*` (x: int, y: TDollar): TDollar {.borrow.}
proc `div` (x: TDollar, y: int): TDollar {.borrow.}
proc `*` (x: Dollar, y: int): Dollar {.borrow.}
proc `*` (x: int, y: Dollar): Dollar {.borrow.}
proc `div` (x: Dollar, y: int): Dollar {.borrow.}
The ``borrow`` pragma makes the compiler use the same implementation as
the proc that deals with the distinct type's base type, so no code is
generated.
But it seems all this boilerplate code needs to be repeated for the ``TEuro``
But it seems all this boilerplate code needs to be repeated for the ``Euro``
currency. This can be solved with templates_.
.. code-block:: nim
@@ -1037,8 +1037,8 @@ currency. This can be solved with templates_.
multiplicative(typ, base)
comparable(typ)
defineCurrency(TDollar, int)
defineCurrency(TEuro, int)
defineCurrency(Dollar, int)
defineCurrency(Euro, int)
The borrow pragma can also be used to annotate the distinct type to allow
@@ -1071,7 +1071,7 @@ values is vulnerable to the famous `SQL injection attack`:idx:\:
.. code-block:: nim
import strutils
proc query(db: TDbHandle, statement: string) = ...
proc query(db: DbHandle, statement: string) = ...
var
username: string
@@ -1081,13 +1081,13 @@ values is vulnerable to the famous `SQL injection attack`:idx:\:
This can be avoided by distinguishing strings that contain SQL from strings
that don't. Distinct types provide a means to introduce a new string type
``TSQL`` that is incompatible with ``string``:
``SQL`` that is incompatible with ``string``:
.. code-block:: nim
type
TSQL = distinct string
SQL = distinct string
proc query(db: TDbHandle, statement: TSQL) = ...
proc query(db: DbHandle, statement: SQL) = ...
var
username: string
@@ -1098,28 +1098,28 @@ that don't. Distinct types provide a means to introduce a new string type
It is an essential property of abstract types that they **do not** imply a
subtype relation between the abtract type and its base type. Explict type
conversions from ``string`` to ``TSQL`` are allowed:
conversions from ``string`` to ``SQL`` are allowed:
.. code-block:: nim
import strutils, sequtils
proc properQuote(s: string): TSQL =
proc properQuote(s: string): SQL =
# quotes a string properly for an SQL statement
return TSQL(s)
return SQL(s)
proc `%` (frmt: TSQL, values: openarray[string]): TSQL =
proc `%` (frmt: SQL, values: openarray[string]): SQL =
# quote each argument:
let v = values.mapIt(TSQL, properQuote(it))
let v = values.mapIt(SQL, properQuote(it))
# we need a temporary type for the type conversion :-(
type TStrSeq = seq[string]
type StrSeq = seq[string]
# call strutils.`%`:
result = TSQL(string(frmt) % TStrSeq(v))
result = SQL(string(frmt) % StrSeq(v))
db.query("SELECT FROM users WHERE name = '$1'".TSQL % [username])
db.query("SELECT FROM users WHERE name = '$1'".SQL % [username])
Now we have compile-time checking against SQL injection attacks. Since
``"".TSQL`` is transformed to ``TSQL("")`` no new syntax is needed for nice
looking ``TSQL`` string literals. The hypothetical ``TSQL`` type actually
``"".SQL`` is transformed to ``SQL("")`` no new syntax is needed for nice
looking ``SQL`` string literals. The hypothetical ``SQL`` type actually
exists in the library as the `TSqlQuery type <db_sqlite.html#TSqlQuery>`_ of
modules like `db_sqlite <db_sqlite.html>`_.

View File

@@ -311,8 +311,8 @@ underlying C ``struct`` in a ``sizeof`` expression:
.. code-block:: Nim
type
TDIR* {.importc: "DIR", header: "<dirent.h>",
final, pure, incompleteStruct.} = object
DIR* {.importc: "DIR", header: "<dirent.h>",
final, pure, incompleteStruct.} = object
Compile pragma
@@ -418,8 +418,8 @@ interfacing with libraries written in C++:
irr = "<irrlicht/irrlicht.h>"
type
TIrrlichtDevice {.final, header: irr, importc: "IrrlichtDevice".} = object
PIrrlichtDevice = ptr TIrrlichtDevice
IrrlichtDeviceObj {.final, header: irr, importc: "IrrlichtDevice".} = object
IrrlichtDevice = ptr IrrlichtDeviceObj
proc createDevice(): PIrrlichtDevice {.
header: irr, importc: "createDevice".}
@@ -465,11 +465,11 @@ allows *sloppy* interfacing with libraries written in Objective C:
""".}
type
TId {.importc: "id", header: "<objc/Object.h>", final.} = distinct int
Id {.importc: "id", header: "<objc/Object.h>", final.} = distinct int
proc newGreeter: TId {.importobjc: "Greeter new", nodecl.}
proc greet(self: TId, x, y: int) {.importobjc: "greet", nodecl.}
proc free(self: TId) {.importobjc: "free", nodecl.}
proc newGreeter: Id {.importobjc: "Greeter new", nodecl.}
proc greet(self: Id, x, y: int) {.importobjc: "greet", nodecl.}
proc free(self: Id) {.importobjc: "free", nodecl.}
var g = newGreeter()
g.greet(12, 34)

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@@ -213,7 +213,7 @@ example ``*`` should not be greedy, so ``\[.*?\]`` should be used instead.
PEG construction
----------------
There are two ways to construct a PEG in Nim code:
(1) Parsing a string into an AST which consists of `TPeg` nodes with the
(1) Parsing a string into an AST which consists of `Peg` nodes with the
`peg` proc.
(2) Constructing the AST directly with proc calls. This method does not
support constructing rules, only simple expressions and is not as

View File

@@ -8,9 +8,9 @@ can also be used to include elements (and ranges of elements):
.. code-block:: nim
type
TCharSet = set[char]
CharSet = set[char]
var
x: TCharSet
x: CharSet
x = {'a'..'z', '0'..'9'} # This constructs a set that contains the
# letters from 'a' to 'z' and the digits
# from '0' to '9'

View File

@@ -1350,11 +1350,11 @@ integer.
.. code-block:: nim
type
TPerson = tuple[name: string, age: int] # type representing a person:
# a person consists of a name
# and an age
Person = tuple[name: string, age: int] # type representing a person:
# a person consists of a name
# and an age
var
person: TPerson
person: Person
person = (name: "Peter", age: 30)
# the same, but less readable:
person = ("Peter", 30)
@@ -1373,7 +1373,7 @@ integer.
# The following line does not compile, they are different tuples!
#person = building
# --> Error: type mismatch: got (tuple[street: string, number: int])
# but expected 'TPerson'
# but expected 'Person'
# The following works because the field names and types are the same.
var teacher: tuple[name: string, age: int] = ("Mark", 42)

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@@ -56,19 +56,19 @@ Objects have access to their type at runtime. There is an
.. code-block:: nim
type
TPerson = object of RootObj
Person = object of RootObj
name*: string # the * means that `name` is accessible from other modules
age: int # no * means that the field is hidden from other modules
TStudent = object of TPerson # TStudent inherits from TPerson
id: int # with an id field
Student = object of Person # Student inherits from Person
id: int # with an id field
var
student: TStudent
person: TPerson
assert(student of TStudent) # is true
student: Student
person: Person
assert(student of Student) # is true
# object construction:
student = TStudent(name: "Anton", age: 5, id: 2)
student = Student(name: "Anton", age: 5, id: 2)
Object fields that should be visible from outside the defining module have to
be marked by ``*``. In contrast to tuples, different object types are
@@ -100,15 +100,15 @@ Example:
.. code-block:: nim
type
PNode = ref TNode # a traced reference to a TNode
TNode = object
le, ri: PNode # left and right subtrees
sym: ref TSym # leaves contain a reference to a TSym
Node = ref NodeObj # a traced reference to a NodeObj
NodeObj = object
le, ri: Node # left and right subtrees
sym: ref Sym # leaves contain a reference to a Sym
TSym = object # a symbol
name: string # the symbol's name
line: int # the line the symbol was declared in
code: PNode # the symbol's abstract syntax tree
Sym = object # a symbol
name: string # the symbol's name
line: int # the line the symbol was declared in
code: PNode # the symbol's abstract syntax tree
Type conversions
@@ -126,11 +126,11 @@ The syntax for type conversions is ``destination_type(expression_to_convert)``
(like an ordinary call):
.. code-block:: nim
proc getID(x: TPerson): int =
TStudent(x).id
proc getID(x: Person): int =
Student(x).id
The ``InvalidObjectConversionError`` exception is raised if ``x`` is not a
``TStudent``.
``Student``.
Object variants
@@ -144,16 +144,16 @@ An example:
# This is an example how an abstract syntax tree could be modeled in Nim
type
TNodeKind = enum # the different node types
NodeKind = enum # the different node types
nkInt, # a leaf with an integer value
nkFloat, # a leaf with a float value
nkString, # a leaf with a string value
nkAdd, # an addition
nkSub, # a subtraction
nkIf # an if statement
PNode = ref TNode
TNode = object
case kind: TNodeKind # the ``kind`` field is the discriminator
Node = ref NodeObj
NodeObj = object
case kind: NodeKind # the ``kind`` field is the discriminator
of nkInt: intVal: int
of nkFloat: floatVal: float
of nkString: strVal: string
@@ -228,21 +228,21 @@ is needed:
.. code-block:: nim
type
TSocket* = object of RootObj
Socket* = object of RootObj
FHost: int # cannot be accessed from the outside of the module
# the `F` prefix is a convention to avoid clashes since
# the accessors are named `host`
proc `host=`*(s: var TSocket, value: int) {.inline.} =
proc `host=`*(s: var Socket, value: int) {.inline.} =
## setter of hostAddr
s.FHost = value
proc host*(s: TSocket): int {.inline.} =
proc host*(s: Socket): int {.inline.} =
## getter of hostAddr
s.FHost
var
s: TSocket
s: Socket
s.host = 34 # same as `host=`(s, 34)
(The example also shows ``inline`` procedures.)
@@ -253,10 +253,10 @@ The ``[]`` array access operator can be overloaded to provide
.. code-block:: nim
type
TVector* = object
Vector* = object
x, y, z: float
proc `[]=`* (v: var TVector, i: int, value: float) =
proc `[]=`* (v: var Vector, i: int, value: float) =
# setter
case i
of 0: v.x = value
@@ -264,7 +264,7 @@ The ``[]`` array access operator can be overloaded to provide
of 2: v.z = value
else: assert(false)
proc `[]`* (v: TVector, i: int): float =
proc `[]`* (v: Vector, i: int): float =
# getter
case i
of 0: result = v.x
@@ -313,27 +313,27 @@ dispatching:
.. code-block:: nim
type
TThing = object of RootObj
TUnit = object of TThing
Thing = object of RootObj
Unit = object of Thing
x: int
method collide(a, b: TThing) {.inline.} =
method collide(a, b: Thing) {.inline.} =
quit "to override!"
method collide(a: TThing, b: TUnit) {.inline.} =
method collide(a: Thing, b: Unit) {.inline.} =
echo "1"
method collide(a: TUnit, b: TThing) {.inline.} =
method collide(a: Unit, b: Thing) {.inline.} =
echo "2"
var
a, b: TUnit
a, b: Unit
collide(a, b) # output: 2
As the example demonstrates, invocation of a multi-method cannot be ambiguous:
Collide 2 is preferred over collide 1 because the resolution works from left to
right. Thus ``TUnit, TThing`` is preferred over ``TThing, TUnit``.
right. Thus ``Unit, Thing`` is preferred over ``Thing, Unit``.
**Perfomance note**: Nim does not produce a virtual method table, but
generates dispatch trees. This avoids the expensive indirect branch for method
@@ -479,18 +479,18 @@ containers:
.. code-block:: nim
type
TBinaryTree[T] = object # TBinaryTree is a generic type with
# with generic param ``T``
le, ri: ref TBinaryTree[T] # left and right subtrees; may be nil
data: T # the data stored in a node
PBinaryTree*[T] = ref TBinaryTree[T] # type that is exported
BinaryTreeObj[T] = object # BinaryTree is a generic type with
# with generic param ``T``
le, ri: BinaryTree[T] # left and right subtrees; may be nil
data: T # the data stored in a node
BinaryTree*[T] = ref BinaryTreeObj[T] # type that is exported
proc newNode*[T](data: T): PBinaryTree[T] =
proc newNode*[T](data: T): BinaryTree[T] =
# constructor for a node
new(result)
result.data = data
proc add*[T](root: var PBinaryTree[T], n: PBinaryTree[T]) =
proc add*[T](root: var BinaryTree[T], n: BinaryTree[T]) =
# insert a node into the tree
if root == nil:
root = n
@@ -511,15 +511,15 @@ containers:
return
it = it.ri
proc add*[T](root: var PBinaryTree[T], data: T) =
proc add*[T](root: var BinaryTree[T], data: T) =
# convenience proc:
add(root, newNode(data))
iterator preorder*[T](root: PBinaryTree[T]): T =
iterator preorder*[T](root: BinaryTree[T]): T =
# Preorder traversal of a binary tree.
# Since recursive iterators are not yet implemented,
# this uses an explicit stack (which is more efficient anyway):
var stack: seq[PBinaryTree[T]] = @[root]
var stack: seq[BinaryTree[T]] = @[root]
while stack.len > 0:
var n = stack.pop()
while n != nil:
@@ -528,7 +528,7 @@ containers:
n = n.le # and follow the left pointer
var
root: PBinaryTree[string] # instantiate a PBinaryTree with ``string``
root: BinaryTree[string] # instantiate a BinaryTree with ``string``
add(root, newNode("hello")) # instantiates ``newNode`` and ``add``
add(root, "world") # instantiates the second ``add`` proc
for str in preorder(root):
@@ -863,7 +863,7 @@ precisely made for compilation time (just like `gorge <system.html#gorge>`_
which executes an external program and captures its output).
The interesting thing is that our macro does not return a runtime `Table
<tables.html#TTable>`_ object. Instead, it builds up Nim source code into
<tables.html#Table>`_ object. Instead, it builds up Nim source code into
the ``source`` variable. For each line of the configuration file a ``const``
variable will be generated (line 15). To avoid conflicts we prefix these
variables with ``cfg``. In essence, what the compiler is doing is replacing

View File

@@ -513,7 +513,7 @@ proc bounds*(c: Captures,
when not useUnicode:
type
TRune = char
Rune = char
template fastRuneAt(s, i, ch: expr) =
ch = s[i]
inc(i)

View File

@@ -514,7 +514,7 @@ proc bounds*(c: Captures,
when not useUnicode:
type
TRune = char
Rune = char
template fastRuneAt(s, i, ch: expr) =
ch = s[i]
inc(i)

View File

@@ -533,7 +533,7 @@ proc bounds*(c: TCaptures,
when not useUnicode:
type
TRune = char
Rune = char
template fastRuneAt(s, i, ch: expr) =
ch = s[i]
inc(i)
@@ -563,7 +563,7 @@ proc rawMatch*(s: string, p: TPeg, start: int, c: var TCaptures): int {.
result = -1
of pkLetter:
if s[start] != '\0':
var a: TRune
var a: Rune
result = start
fastRuneAt(s, result, a)
if isAlpha(a): dec(result, start)
@@ -572,7 +572,7 @@ proc rawMatch*(s: string, p: TPeg, start: int, c: var TCaptures): int {.
result = -1
of pkLower:
if s[start] != '\0':
var a: TRune
var a: Rune
result = start
fastRuneAt(s, result, a)
if isLower(a): dec(result, start)
@@ -581,7 +581,7 @@ proc rawMatch*(s: string, p: TPeg, start: int, c: var TCaptures): int {.
result = -1
of pkUpper:
if s[start] != '\0':
var a: TRune
var a: Rune
result = start
fastRuneAt(s, result, a)
if isUpper(a): dec(result, start)
@@ -590,7 +590,7 @@ proc rawMatch*(s: string, p: TPeg, start: int, c: var TCaptures): int {.
result = -1
of pkTitle:
if s[start] != '\0':
var a: TRune
var a: Rune
result = start
fastRuneAt(s, result, a)
if isTitle(a): dec(result, start)
@@ -599,7 +599,7 @@ proc rawMatch*(s: string, p: TPeg, start: int, c: var TCaptures): int {.
result = -1
of pkWhitespace:
if s[start] != '\0':
var a: TRune
var a: Rune
result = start
fastRuneAt(s, result, a)
if isWhitespace(a): dec(result, start)
@@ -623,7 +623,7 @@ proc rawMatch*(s: string, p: TPeg, start: int, c: var TCaptures): int {.
of pkTerminalIgnoreCase:
var
i = 0
a, b: TRune
a, b: Rune
result = start
while i < len(p.term):
fastRuneAt(p.term, i, a)
@@ -635,15 +635,15 @@ proc rawMatch*(s: string, p: TPeg, start: int, c: var TCaptures): int {.
of pkTerminalIgnoreStyle:
var
i = 0
a, b: TRune
a, b: Rune
result = start
while i < len(p.term):
while true:
fastRuneAt(p.term, i, a)
if a != TRune('_'): break
if a != Rune('_'): break
while true:
fastRuneAt(s, result, b)
if b != TRune('_'): break
if b != Rune('_'): break
if toLower(a) != toLower(b):
result = -1
break
@@ -865,7 +865,7 @@ template `=~`*(s: string, pattern: TPeg): expr =
## else:
## echo("syntax error")
##
when not definedInScope(matches):
when not declaredInScope(matches):
var matches {.inject.}: array[0..MaxSubpatterns-1, string]
match(s, pattern, matches)
@@ -964,7 +964,7 @@ proc transformFile*(infile, outfile: string,
## error occurs. This is supposed to be used for quick scripting.
var x = readFile(infile)
if not isNil(x):
var f: TFile
var f: File
if open(f, outfile, fmWrite):
write(f, x.parallelReplace(subs))
close(f)
@@ -1404,8 +1404,8 @@ proc arrowIsNextTok(c: TPegLexer): bool =
# ----------------------------- parser ----------------------------------------
type
EInvalidPeg* = object of EInvalidValue ## raised if an invalid
## PEG has been detected
EInvalidPeg* = object of ValueError ## raised if an invalid
## PEG has been detected
TPegParser = object of TPegLexer ## the PEG parser object
tok: TToken
nonterms: seq[PNonTerminal]