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Macro docs additions (#12270)
* small macros doc additions
* more changes
* fixes [ci skip]
* capitalization, couple additions
* nkNodeKind to nnkNodeKind
(cherry picked from commit c20778d2d3)
This commit is contained in:
committed by
narimiran
parent
8a0012de42
commit
0ea770c8f0
@@ -121,13 +121,13 @@ type
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type
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NimIdent* {.deprecated.} = object of RootObj
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## represents a Nim identifier in the AST. **Note**: This is only
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## Represents a Nim identifier in the AST. **Note**: This is only
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## rarely useful, for identifier construction from a string
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## use ``ident"abc"``.
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NimSymObj = object # hidden
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NimSym* {.deprecated.} = ref NimSymObj
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## represents a Nim *symbol* in the compiler; a *symbol* is a looked-up
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## Represents a Nim *symbol* in the compiler; a *symbol* is a looked-up
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## *ident*.
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@@ -141,45 +141,46 @@ const
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proc `!`*(s: string): NimIdent {.magic: "StrToIdent", noSideEffect, deprecated:
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"Deprecated since version 0.18.0: Use 'ident' or 'newIdentNode' instead.".}
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## constructs an identifier from the string `s`
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## Constructs an identifier from the string `s`.
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proc toNimIdent*(s: string): NimIdent {.magic: "StrToIdent", noSideEffect, deprecated:
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"Deprecated since version 0.18.0: Use 'ident' or 'newIdentNode' instead.".}
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## constructs an identifier from the string `s`
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## Constructs an identifier from the string `s`.
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proc `==`*(a, b: NimIdent): bool {.magic: "EqIdent", noSideEffect, deprecated:
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"Deprecated since version 0.18.1; Use '==' on 'NimNode' instead.".}
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## compares two Nim identifiers
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## Compares two Nim identifiers.
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proc `==`*(a, b: NimNode): bool {.magic: "EqNimrodNode", noSideEffect.}
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## compares two Nim nodes
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## Compare two Nim nodes. Return true if nodes are structurally
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## equivalent. This means two independently created nodes can be equal.
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proc `==`*(a, b: NimSym): bool {.magic: "EqNimrodNode", noSideEffect, deprecated:
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"Deprecated since version 0.18.1; Use '==(NimNode, NimNode)' instead.".}
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## compares two Nim symbols
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## Compares two Nim symbols.
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{.pop.}
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proc sameType*(a, b: NimNode): bool {.magic: "SameNodeType", noSideEffect.} =
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## compares two Nim nodes' types. Return true if the types are the same,
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## Compares two Nim nodes' types. Return true if the types are the same,
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## eg. true when comparing alias with original type.
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discard
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proc len*(n: NimNode): int {.magic: "NLen", noSideEffect.}
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## returns the number of children of `n`.
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## Returns the number of children of `n`.
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proc `[]`*(n: NimNode, i: int): NimNode {.magic: "NChild", noSideEffect.}
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## get `n`'s `i`'th child.
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## Get `n`'s `i`'th child.
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proc `[]`*(n: NimNode, i: BackwardsIndex): NimNode = n[n.len - i.int]
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## get `n`'s `i`'th child.
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## Get `n`'s `i`'th child.
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template `^^`(n: NimNode, i: untyped): untyped =
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(when i is BackwardsIndex: n.len - int(i) else: int(i))
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proc `[]`*[T, U](n: NimNode, x: HSlice[T, U]): seq[NimNode] =
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## slice operation for NimNode.
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## returns a seq of child of `n` who inclusive range [n[x.a], n[x.b]].
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## Slice operation for NimNode.
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## Returns a seq of child of `n` who inclusive range [n[x.a], n[x.b]].
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let xa = n ^^ x.a
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let L = (n ^^ x.b) - xa + 1
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result = newSeq[NimNode](L)
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@@ -188,10 +189,10 @@ proc `[]`*[T, U](n: NimNode, x: HSlice[T, U]): seq[NimNode] =
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proc `[]=`*(n: NimNode, i: int, child: NimNode) {.magic: "NSetChild",
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noSideEffect.}
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## set `n`'s `i`'th child to `child`.
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## Set `n`'s `i`'th child to `child`.
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proc `[]=`*(n: NimNode, i: BackwardsIndex, child: NimNode) =
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## set `n`'s `i`'th child to `child`.
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## Set `n`'s `i`'th child to `child`.
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n[n.len - i.int] = child
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template `or`*(x, y: NimNode): NimNode =
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@@ -220,10 +221,10 @@ proc add*(father: NimNode, children: varargs[NimNode]): NimNode {.
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## Returns the `father` node so that calls can be nested.
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proc del*(father: NimNode, idx = 0, n = 1) {.magic: "NDel", noSideEffect.}
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## deletes `n` children of `father` starting at index `idx`.
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## Deletes `n` children of `father` starting at index `idx`.
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proc kind*(n: NimNode): NimNodeKind {.magic: "NKind", noSideEffect.}
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## returns the `kind` of the node `n`.
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## Returns the `kind` of the node `n`.
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proc intVal*(n: NimNode): BiggestInt {.magic: "NIntVal", noSideEffect.}
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## Returns an integer value from any integer literal or enum field symbol.
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@@ -244,17 +245,20 @@ proc getImpl*(s: NimSym): NimNode {.magic: "GetImpl", noSideEffect, deprecated:
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when defined(nimSymKind):
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proc symKind*(symbol: NimNode): NimSymKind {.magic: "NSymKind", noSideEffect.}
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proc getImpl*(symbol: NimNode): NimNode {.magic: "GetImpl", noSideEffect.}
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## Returns a copy of the declaration of a symbol or `nil`.
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proc strVal*(n: NimNode): string {.magic: "NStrVal", noSideEffect.}
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## retrieve the implementation of `symbol`. `symbol` can be a
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## routine or a const.
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## Returns the string value of an identifier, symbol, comment, or string literal.
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##
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## See also:
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## * `strVal= proc<#strVal=,NimNode,string>`_ for setting the string value.
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proc `$`*(i: NimIdent): string {.magic: "NStrVal", noSideEffect, deprecated:
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"Deprecated since version 0.18.1; Use 'strVal' instead.".}
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## converts a Nim identifier to a string
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## Converts a Nim identifier to a string.
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proc `$`*(s: NimSym): string {.magic: "NStrVal", noSideEffect, deprecated:
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"Deprecated since version 0.18.1; Use 'strVal' instead.".}
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## converts a Nim symbol to a string
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## Converts a Nim symbol to a string.
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else: # bootstrapping substitute
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proc getImpl*(symbol: NimNode): NimNode =
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@@ -278,22 +282,28 @@ else: # bootstrapping substitute
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when defined(nimSymImplTransform):
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proc getImplTransformed*(symbol: NimNode): NimNode {.magic: "GetImplTransf", noSideEffect.}
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## for a typed proc returns the AST after transformation pass
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## For a typed proc returns the AST after transformation pass.
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when defined(nimHasSymOwnerInMacro):
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proc owner*(sym: NimNode): NimNode {.magic: "SymOwner", noSideEffect.}
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## accepts node of kind nnkSym and returns its owner's symbol.
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## result is also mnde of kind nnkSym if owner exists otherwise
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## nnkNilLit is returned
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## Accepts a node of kind `nnkSym` and returns its owner's symbol.
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## The meaning of 'owner' depends on `sym`'s `NimSymKind` and declaration
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## context. For top level declarations this is an `nskModule` symbol,
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## for proc local variables an `nskProc` symbol, for enum/object fields an
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## `nskType` symbol, etc. For symbols without an owner, `nil` is returned.
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##
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## See also:
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## * `symKind proc<#symKind,NimNode>`_ to get the kind of a symbol
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## * `getImpl proc<#getImpl,NimNode>`_ to get the declaration of a symbol
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when defined(nimHasInstantiationOfInMacro):
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proc isInstantiationOf*(instanceProcSym, genProcSym: NimNode): bool {.magic: "SymIsInstantiationOf", noSideEffect.}
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## check if proc symbol is instance of the generic proc symbol
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## useful to check proc symbols against generic symbols
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## returned by `bindSym`
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## Checks if a proc symbol is an instance of the generic proc symbol.
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## Useful to check proc symbols against generic symbols
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## returned by `bindSym`.
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proc getType*(n: NimNode): NimNode {.magic: "NGetType", noSideEffect.}
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## with 'getType' you can access the node's `type`:idx:. A Nim type is
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## With 'getType' you can access the node's `type`:idx:. A Nim type is
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## mapped to a Nim AST too, so it's slightly confusing but it means the same
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## API can be used to traverse types. Recursive types are flattened for you
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## so there is no danger of infinite recursions during traversal. To
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@@ -301,10 +311,7 @@ proc getType*(n: NimNode): NimNode {.magic: "NGetType", noSideEffect.}
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## kind of type it is, call `typeKind` on getType's result.
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proc getType*(n: typedesc): NimNode {.magic: "NGetType", noSideEffect.}
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## Returns the Nim type node for given type. This can be used to turn macro
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## typedesc parameter into proper NimNode representing type, since typedesc
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## are an exception in macro calls - they are not mapped implicitly to
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## NimNode like any other arguments.
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## Version of ``getType`` which takes a ``typedesc``.
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proc typeKind*(n: NimNode): NimTypeKind {.magic: "NGetType", noSideEffect.}
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## Returns the type kind of the node 'n' that should represent a type, that
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@@ -333,8 +340,8 @@ proc getTypeInst*(n: typedesc): NimNode {.magic: "NGetType", noSideEffect.}
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proc getTypeImpl*(n: NimNode): NimNode {.magic: "NGetType", noSideEffect.} =
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## Returns the `type`:idx: of a node in a form matching the implementation
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## of the type. Any intermediate aliases are expanded to arrive at the final
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## type implementation. You can instead use ``getImpl`` on a symbol if you
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## of the type. Any intermediate aliases are expanded to arrive at the final
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## type implementation. You can instead use ``getImpl`` on a symbol if you
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## want to find the intermediate aliases.
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runnableExamples:
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type
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@@ -393,6 +400,14 @@ proc `ident=`*(n: NimNode, val: NimIdent) {.magic: "NSetIdent", noSideEffect, de
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# bracket[0] = fake # constructs a mixed array with ints and floats!
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proc `strVal=`*(n: NimNode, val: string) {.magic: "NSetStrVal", noSideEffect.}
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## Sets the string value of a string literal or comment.
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## Setting `strVal` is disallowed for `nnkIdent` and `nnkSym` nodes; a new node
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## must be created using `ident` or `bindSym` instead.
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##
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## See also:
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## * `strVal proc<#strVal,NimNode>`_ for getting the string value.
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## * `ident proc<#ident,string>`_ for creating an identifier.
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## * `bindSym proc<#bindSym%2C%2CBindSymRule>`_ for binding a symbol.
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proc newNimNode*(kind: NimNodeKind,
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lineInfoFrom: NimNode = nil): NimNode
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@@ -407,47 +422,47 @@ proc copyNimNode*(n: NimNode): NimNode {.magic: "NCopyNimNode", noSideEffect.}
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proc copyNimTree*(n: NimNode): NimNode {.magic: "NCopyNimTree", noSideEffect.}
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proc error*(msg: string, n: NimNode = nil) {.magic: "NError", benign.}
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## writes an error message at compile time. The optional ``n: NimNode``
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## Writes an error message at compile time. The optional ``n: NimNode``
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## parameter is used as the source for file and line number information in
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## the compilation error message.
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proc warning*(msg: string, n: NimNode = nil) {.magic: "NWarning", benign.}
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## writes a warning message at compile time
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## Writes a warning message at compile time.
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proc hint*(msg: string, n: NimNode = nil) {.magic: "NHint", benign.}
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## writes a hint message at compile time
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## Writes a hint message at compile time.
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proc newStrLitNode*(s: string): NimNode {.compileTime, noSideEffect.} =
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## creates a string literal node from `s`
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## Creates a string literal node from `s`.
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result = newNimNode(nnkStrLit)
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result.strVal = s
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proc newCommentStmtNode*(s: string): NimNode {.compileTime, noSideEffect.} =
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## creates a comment statement node
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## Creates a comment statement node.
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result = newNimNode(nnkCommentStmt)
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result.strVal = s
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proc newIntLitNode*(i: BiggestInt): NimNode {.compileTime.} =
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## creates a int literal node from `i`
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## Creates an int literal node from `i`.
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result = newNimNode(nnkIntLit)
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result.intVal = i
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proc newFloatLitNode*(f: BiggestFloat): NimNode {.compileTime.} =
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## creates a float literal node from `f`
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## Creates a float literal node from `f`.
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result = newNimNode(nnkFloatLit)
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result.floatVal = f
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{.push warnings: off.}
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proc newIdentNode*(i: NimIdent): NimNode {.compileTime, deprecated.} =
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## creates an identifier node from `i`
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## Creates an identifier node from `i`.
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result = newNimNode(nnkIdent)
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result.ident = i
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{.pop.}
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proc newIdentNode*(i: string): NimNode {.magic: "StrToIdent", noSideEffect, compilerproc.}
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## creates an identifier node from `i`. It is simply an alias for
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## Creates an identifier node from `i`. It is simply an alias for
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## ``ident(string)``. Use that, it's shorter.
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@@ -463,35 +478,35 @@ type
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proc bindSym*(ident: string | NimNode, rule: BindSymRule = brClosed): NimNode {.
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magic: "NBindSym", noSideEffect.}
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## creates a node that binds `ident` to a symbol node. The bound symbol
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## Ceates a node that binds `ident` to a symbol node. The bound symbol
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## may be an overloaded symbol.
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## if `ident` is a NimNode, it must have nkIdent kind.
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## If ``rule == brClosed`` either an ``nkClosedSymChoice`` tree is
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## returned or ``nkSym`` if the symbol is not ambiguous.
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## If ``rule == brOpen`` either an ``nkOpenSymChoice`` tree is
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## returned or ``nkSym`` if the symbol is not ambiguous.
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## If ``rule == brForceOpen`` always an ``nkOpenSymChoice`` tree is
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## if `ident` is a NimNode, it must have ``nnkIdent`` kind.
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## If ``rule == brClosed`` either an ``nnkClosedSymChoice`` tree is
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## returned or ``nnkSym`` if the symbol is not ambiguous.
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## If ``rule == brOpen`` either an ``nnkOpenSymChoice`` tree is
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## returned or ``nnkSym`` if the symbol is not ambiguous.
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## If ``rule == brForceOpen`` always an ``nnkOpenSymChoice`` tree is
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## returned even if the symbol is not ambiguous.
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##
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## experimental feature:
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## use {.experimental: "dynamicBindSym".} to activate it
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## if called from template / regular code, `ident` and `rule` must be
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## Experimental feature:
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## use {.experimental: "dynamicBindSym".} to activate it.
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## If called from template / regular code, `ident` and `rule` must be
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## constant expression / literal value.
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## if called from macros / compile time procs / static blocks,
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## If called from macros / compile time procs / static blocks,
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## `ident` and `rule` can be VM computed value.
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proc genSym*(kind: NimSymKind = nskLet; ident = ""): NimNode {.
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magic: "NGenSym", noSideEffect.}
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## generates a fresh symbol that is guaranteed to be unique. The symbol
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## Generates a fresh symbol that is guaranteed to be unique. The symbol
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## needs to occur in a declaration context.
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proc callsite*(): NimNode {.magic: "NCallSite", benign, deprecated:
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"Deprecated since v0.18.1; use varargs[untyped] in the macro prototype instead".}
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## returns the AST of the invocation expression that invoked this macro.
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## Returns the AST of the invocation expression that invoked this macro.
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proc toStrLit*(n: NimNode): NimNode {.compileTime.} =
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## converts the AST `n` to the concrete Nim code and wraps that
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## in a string literal node
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## Converts the AST `n` to the concrete Nim code and wraps that
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## in a string literal node.
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return newStrLitNode(repr(n))
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type
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@@ -500,27 +515,29 @@ type
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line*,column*: int
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proc `$`*(arg: LineInfo): string =
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## Return a string representation in the form `filepath(line, column)`.
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# BUG: without `result = `, gives compile error
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result = arg.filename & "(" & $arg.line & ", " & $arg.column & ")"
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#proc lineinfo*(n: NimNode): LineInfo {.magic: "NLineInfo", noSideEffect.}
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## returns the position the node appears in the original source file
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## in the form filename(line, col)
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# ## returns the position the node appears in the original source file
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# ## in the form filename(line, col)
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proc getLine(arg: NimNode): int {.magic: "NLineInfo", noSideEffect.}
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proc getColumn(arg: NimNode): int {.magic: "NLineInfo", noSideEffect.}
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proc getFile(arg: NimNode): string {.magic: "NLineInfo", noSideEffect.}
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proc copyLineInfo*(arg: NimNode, info: NimNode) {.magic: "NLineInfo", noSideEffect.}
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## copy lineinfo from info node
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## Copy lineinfo from ``info``.
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proc lineInfoObj*(n: NimNode): LineInfo {.compileTime.} =
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## returns ``LineInfo`` of ``n``, using absolute path for ``filename``
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## Returns ``LineInfo`` of ``n``, using absolute path for ``filename``.
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result.filename = n.getFile
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result.line = n.getLine
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result.column = n.getColumn
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proc lineInfo*(arg: NimNode): string {.compileTime.} =
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## Return line info in the form `filepath(line, column)`.
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$arg.lineInfoObj
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proc internalParseExpr(s: string): NimNode {.
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@@ -586,25 +603,25 @@ proc quote*(bl: typed, op = "``"): NimNode {.magic: "QuoteAst", noSideEffect.}
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## echo `info` & ": Check failed: " & `expString`
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proc expectKind*(n: NimNode, k: NimNodeKind) {.compileTime.} =
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## checks that `n` is of kind `k`. If this is not the case,
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## Checks that `n` is of kind `k`. If this is not the case,
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## compilation aborts with an error message. This is useful for writing
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## macros that check the AST that is passed to them.
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if n.kind != k: error("Expected a node of kind " & $k & ", got " & $n.kind, n)
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proc expectMinLen*(n: NimNode, min: int) {.compileTime.} =
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## checks that `n` has at least `min` children. If this is not the case,
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## Checks that `n` has at least `min` children. If this is not the case,
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## compilation aborts with an error message. This is useful for writing
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## macros that check its number of arguments.
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if n.len < min: error("macro expects a node with " & $min & " children", n)
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proc expectLen*(n: NimNode, len: int) {.compileTime.} =
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## checks that `n` has exactly `len` children. If this is not the case,
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## Checks that `n` has exactly `len` children. If this is not the case,
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## compilation aborts with an error message. This is useful for writing
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## macros that check its number of arguments.
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if n.len != len: error("macro expects a node with " & $len & " children", n)
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proc expectLen*(n: NimNode, min, max: int) {.compileTime.} =
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## checks that `n` has a number of children in the range ``min..max``.
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## Checks that `n` has a number of children in the range ``min..max``.
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## If this is not the case, compilation aborts with an error message.
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## This is useful for writing macros that check its number of arguments.
|
||||
if n.len < min or n.len > max:
|
||||
@@ -612,13 +629,13 @@ proc expectLen*(n: NimNode, min, max: int) {.compileTime.} =
|
||||
|
||||
proc newTree*(kind: NimNodeKind,
|
||||
children: varargs[NimNode]): NimNode {.compileTime.} =
|
||||
## produces a new node with children.
|
||||
## Produces a new node with children.
|
||||
result = newNimNode(kind)
|
||||
result.add(children)
|
||||
|
||||
proc newCall*(theProc: NimNode,
|
||||
args: varargs[NimNode]): NimNode {.compileTime.} =
|
||||
## produces a new call node. `theProc` is the proc that is called with
|
||||
## Produces a new call node. `theProc` is the proc that is called with
|
||||
## the arguments ``args[0..]``.
|
||||
result = newNimNode(nnkCall)
|
||||
result.add(theProc)
|
||||
@@ -628,7 +645,7 @@ proc newCall*(theProc: NimNode,
|
||||
|
||||
proc newCall*(theProc: NimIdent, args: varargs[NimNode]): NimNode {.compileTime, deprecated:
|
||||
"Deprecated since v0.18.1; use 'newCall(string, ...)' or 'newCall(NimNode, ...)' instead".} =
|
||||
## produces a new call node. `theProc` is the proc that is called with
|
||||
## Produces a new call node. `theProc` is the proc that is called with
|
||||
## the arguments ``args[0..]``.
|
||||
result = newNimNode(nnkCall)
|
||||
result.add(newIdentNode(theProc))
|
||||
@@ -638,91 +655,91 @@ proc newCall*(theProc: NimIdent, args: varargs[NimNode]): NimNode {.compileTime,
|
||||
|
||||
proc newCall*(theProc: string,
|
||||
args: varargs[NimNode]): NimNode {.compileTime.} =
|
||||
## produces a new call node. `theProc` is the proc that is called with
|
||||
## Produces a new call node. `theProc` is the proc that is called with
|
||||
## the arguments ``args[0..]``.
|
||||
result = newNimNode(nnkCall)
|
||||
result.add(newIdentNode(theProc))
|
||||
result.add(args)
|
||||
|
||||
proc newLit*(c: char): NimNode {.compileTime.} =
|
||||
## produces a new character literal node.
|
||||
## Produces a new character literal node.
|
||||
result = newNimNode(nnkCharLit)
|
||||
result.intVal = ord(c)
|
||||
|
||||
proc newLit*(i: int): NimNode {.compileTime.} =
|
||||
## produces a new integer literal node.
|
||||
## Produces a new integer literal node.
|
||||
result = newNimNode(nnkIntLit)
|
||||
result.intVal = i
|
||||
|
||||
proc newLit*(i: int8): NimNode {.compileTime.} =
|
||||
## produces a new integer literal node.
|
||||
## Produces a new integer literal node.
|
||||
result = newNimNode(nnkInt8Lit)
|
||||
result.intVal = i
|
||||
|
||||
proc newLit*(i: int16): NimNode {.compileTime.} =
|
||||
## produces a new integer literal node.
|
||||
## Produces a new integer literal node.
|
||||
result = newNimNode(nnkInt16Lit)
|
||||
result.intVal = i
|
||||
|
||||
proc newLit*(i: int32): NimNode {.compileTime.} =
|
||||
## produces a new integer literal node.
|
||||
## Produces a new integer literal node.
|
||||
result = newNimNode(nnkInt32Lit)
|
||||
result.intVal = i
|
||||
|
||||
proc newLit*(i: int64): NimNode {.compileTime.} =
|
||||
## produces a new integer literal node.
|
||||
## Produces a new integer literal node.
|
||||
result = newNimNode(nnkInt64Lit)
|
||||
result.intVal = i
|
||||
|
||||
proc newLit*(i: uint): NimNode {.compileTime.} =
|
||||
## produces a new unsigned integer literal node.
|
||||
## Produces a new unsigned integer literal node.
|
||||
result = newNimNode(nnkUIntLit)
|
||||
result.intVal = BiggestInt(i)
|
||||
|
||||
proc newLit*(i: uint8): NimNode {.compileTime.} =
|
||||
## produces a new unsigned integer literal node.
|
||||
## Produces a new unsigned integer literal node.
|
||||
result = newNimNode(nnkUInt8Lit)
|
||||
result.intVal = BiggestInt(i)
|
||||
|
||||
proc newLit*(i: uint16): NimNode {.compileTime.} =
|
||||
## produces a new unsigned integer literal node.
|
||||
## Produces a new unsigned integer literal node.
|
||||
result = newNimNode(nnkUInt16Lit)
|
||||
result.intVal = BiggestInt(i)
|
||||
|
||||
proc newLit*(i: uint32): NimNode {.compileTime.} =
|
||||
## produces a new unsigned integer literal node.
|
||||
## Produces a new unsigned integer literal node.
|
||||
result = newNimNode(nnkUInt32Lit)
|
||||
result.intVal = BiggestInt(i)
|
||||
|
||||
proc newLit*(i: uint64): NimNode {.compileTime.} =
|
||||
## produces a new unsigned integer literal node.
|
||||
## Produces a new unsigned integer literal node.
|
||||
result = newNimNode(nnkUInt64Lit)
|
||||
result.intVal = BiggestInt(i)
|
||||
|
||||
proc newLit*(b: bool): NimNode {.compileTime.} =
|
||||
## produces a new boolean literal node.
|
||||
## Produces a new boolean literal node.
|
||||
result = if b: bindSym"true" else: bindSym"false"
|
||||
|
||||
when false:
|
||||
# the float type is not really a distinct type as described in https://github.com/nim-lang/Nim/issues/5875
|
||||
proc newLit*(f: float): NimNode {.compileTime.} =
|
||||
## produces a new float literal node.
|
||||
## Produces a new float literal node.
|
||||
result = newNimNode(nnkFloatLit)
|
||||
result.floatVal = f
|
||||
|
||||
proc newLit*(f: float32): NimNode {.compileTime.} =
|
||||
## produces a new float literal node.
|
||||
## Produces a new float literal node.
|
||||
result = newNimNode(nnkFloat32Lit)
|
||||
result.floatVal = f
|
||||
|
||||
proc newLit*(f: float64): NimNode {.compileTime.} =
|
||||
## produces a new float literal node.
|
||||
## Produces a new float literal node.
|
||||
result = newNimNode(nnkFloat64Lit)
|
||||
result.floatVal = f
|
||||
|
||||
when declared(float128):
|
||||
proc newLit*(f: float128): NimNode {.compileTime.} =
|
||||
## produces a new float literal node.
|
||||
## Produces a new float literal node.
|
||||
result = newNimNode(nnkFloat128Lit)
|
||||
result.floatVal = f
|
||||
|
||||
@@ -771,12 +788,12 @@ proc newLit*(arg: tuple): NimNode {.compileTime.} =
|
||||
result.add nnkExprColonExpr.newTree(newIdentNode(a), newLit(b))
|
||||
|
||||
proc newLit*(s: string): NimNode {.compileTime.} =
|
||||
## produces a new string literal node.
|
||||
## Produces a new string literal node.
|
||||
result = newNimNode(nnkStrLit)
|
||||
result.strVal = s
|
||||
|
||||
proc nestList*(op: NimNode; pack: NimNode): NimNode {.compileTime.} =
|
||||
## nests the list `pack` into a tree of call expressions:
|
||||
## Nests the list `pack` into a tree of call expressions:
|
||||
## ``[a, b, c]`` is transformed into ``op(a, op(c, d))``.
|
||||
## This is also known as fold expression.
|
||||
if pack.len < 1:
|
||||
@@ -786,7 +803,7 @@ proc nestList*(op: NimNode; pack: NimNode): NimNode {.compileTime.} =
|
||||
result = newCall(op, pack[i], result)
|
||||
|
||||
proc nestList*(op: NimNode; pack: NimNode; init: NimNode): NimNode {.compileTime.} =
|
||||
## nests the list `pack` into a tree of call expressions:
|
||||
## Nests the list `pack` into a tree of call expressions:
|
||||
## ``[a, b, c]`` is transformed into ``op(a, op(c, d))``.
|
||||
## This is also known as fold expression.
|
||||
result = init
|
||||
@@ -973,37 +990,37 @@ macro dumpLispImm*(s: untyped): untyped {.deprecated.} = echo s.lispRepr
|
||||
## Deprecated. Use `dumpLisp` instead.
|
||||
|
||||
proc newEmptyNode*(): NimNode {.compileTime, noSideEffect.} =
|
||||
## Create a new empty node
|
||||
## Create a new empty node.
|
||||
result = newNimNode(nnkEmpty)
|
||||
|
||||
proc newStmtList*(stmts: varargs[NimNode]): NimNode {.compileTime.}=
|
||||
## Create a new statement list
|
||||
## Create a new statement list.
|
||||
result = newNimNode(nnkStmtList).add(stmts)
|
||||
|
||||
proc newPar*(exprs: varargs[NimNode]): NimNode {.compileTime.}=
|
||||
## Create a new parentheses-enclosed expression
|
||||
## Create a new parentheses-enclosed expression.
|
||||
newNimNode(nnkPar).add(exprs)
|
||||
|
||||
proc newBlockStmt*(label, body: NimNode): NimNode {.compileTime.} =
|
||||
## Create a new block statement with label
|
||||
## Create a new block statement with label.
|
||||
return newNimNode(nnkBlockStmt).add(label, body)
|
||||
|
||||
proc newBlockStmt*(body: NimNode): NimNode {.compileTime.} =
|
||||
## Create a new block: stmt
|
||||
## Create a new block: stmt.
|
||||
return newNimNode(nnkBlockStmt).add(newEmptyNode(), body)
|
||||
|
||||
proc newVarStmt*(name, value: NimNode): NimNode {.compileTime.} =
|
||||
## Create a new var stmt
|
||||
## Create a new var stmt.
|
||||
return newNimNode(nnkVarSection).add(
|
||||
newNimNode(nnkIdentDefs).add(name, newNimNode(nnkEmpty), value))
|
||||
|
||||
proc newLetStmt*(name, value: NimNode): NimNode {.compileTime.} =
|
||||
## Create a new let stmt
|
||||
## Create a new let stmt.
|
||||
return newNimNode(nnkLetSection).add(
|
||||
newNimNode(nnkIdentDefs).add(name, newNimNode(nnkEmpty), value))
|
||||
|
||||
proc newConstStmt*(name, value: NimNode): NimNode {.compileTime.} =
|
||||
## Create a new const stmt
|
||||
## Create a new const stmt.
|
||||
newNimNode(nnkConstSection).add(
|
||||
newNimNode(nnkConstDef).add(name, newNimNode(nnkEmpty), value))
|
||||
|
||||
@@ -1011,13 +1028,13 @@ proc newAssignment*(lhs, rhs: NimNode): NimNode {.compileTime.} =
|
||||
return newNimNode(nnkAsgn).add(lhs, rhs)
|
||||
|
||||
proc newDotExpr*(a, b: NimNode): NimNode {.compileTime.} =
|
||||
## Create new dot expression
|
||||
## a.dot(b) -> `a.b`
|
||||
## Create new dot expression.
|
||||
## a.dot(b) -> `a.b`
|
||||
return newNimNode(nnkDotExpr).add(a, b)
|
||||
|
||||
proc newColonExpr*(a, b: NimNode): NimNode {.compileTime.} =
|
||||
## Create new colon expression
|
||||
## newColonExpr(a, b) -> `a: b`
|
||||
## Create new colon expression.
|
||||
## newColonExpr(a, b) -> `a: b`
|
||||
newNimNode(nnkExprColonExpr).add(a, b)
|
||||
|
||||
proc newIdentDefs*(name, kind: NimNode;
|
||||
@@ -1053,11 +1070,11 @@ proc newIdentDefs*(name, kind: NimNode;
|
||||
newNimNode(nnkIdentDefs).add(name, kind, default)
|
||||
|
||||
proc newNilLit*(): NimNode {.compileTime.} =
|
||||
## New nil literal shortcut
|
||||
## New nil literal shortcut.
|
||||
result = newNimNode(nnkNilLit)
|
||||
|
||||
proc last*(node: NimNode): NimNode {.compileTime.} = node[node.len-1]
|
||||
## Return the last item in nodes children. Same as `node[^1]`
|
||||
## Return the last item in nodes children. Same as `node[^1]`.
|
||||
|
||||
|
||||
const
|
||||
@@ -1068,7 +1085,7 @@ const
|
||||
nnkCallStrLit, nnkHiddenCallConv}
|
||||
|
||||
proc expectKind*(n: NimNode; k: set[NimNodeKind]) {.compileTime.} =
|
||||
## checks that `n` is of kind `k`. If this is not the case,
|
||||
## Checks that `n` is of kind `k`. If this is not the case,
|
||||
## compilation aborts with an error message. This is useful for writing
|
||||
## macros that check the AST that is passed to them.
|
||||
if n.kind notin k: error("Expected one of " & $k & ", got " & $n.kind, n)
|
||||
@@ -1078,7 +1095,7 @@ proc newProc*(name = newEmptyNode();
|
||||
body: NimNode = newStmtList();
|
||||
procType = nnkProcDef;
|
||||
pragmas: NimNode = newEmptyNode()): NimNode {.compileTime.} =
|
||||
## shortcut for creating a new proc
|
||||
## Shortcut for creating a new proc.
|
||||
##
|
||||
## The ``params`` array must start with the return type of the proc,
|
||||
## followed by a list of IdentDefs which specify the params.
|
||||
@@ -1156,7 +1173,7 @@ proc newEnum*(name: NimNode, fields: openArray[NimNode],
|
||||
return typeSect
|
||||
|
||||
proc copyChildrenTo*(src, dest: NimNode) {.compileTime.}=
|
||||
## Copy all children from `src` to `dest`
|
||||
## Copy all children from `src` to `dest`.
|
||||
for i in 0 ..< src.len:
|
||||
dest.add src[i].copyNimTree
|
||||
|
||||
@@ -1189,15 +1206,15 @@ proc `params=`* (someProc: NimNode; params: NimNode) {.compileTime.}=
|
||||
someProc[3] = params
|
||||
|
||||
proc pragma*(someProc: NimNode): NimNode {.compileTime.} =
|
||||
## Get the pragma of a proc type
|
||||
## These will be expanded
|
||||
## Get the pragma of a proc type.
|
||||
## These will be expanded.
|
||||
if someProc.kind == nnkProcTy:
|
||||
result = someProc[1]
|
||||
else:
|
||||
someProc.expectRoutine
|
||||
result = someProc[4]
|
||||
proc `pragma=`*(someProc: NimNode; val: NimNode) {.compileTime.}=
|
||||
## Set the pragma of a proc type
|
||||
## Set the pragma of a proc type.
|
||||
expectKind(val, {nnkEmpty, nnkPragma})
|
||||
if someProc.kind == nnkProcTy:
|
||||
someProc[1] = val
|
||||
@@ -1206,7 +1223,7 @@ proc `pragma=`*(someProc: NimNode; val: NimNode) {.compileTime.}=
|
||||
someProc[4] = val
|
||||
|
||||
proc addPragma*(someProc, pragma: NimNode) {.compileTime.} =
|
||||
## Adds pragma to routine definition
|
||||
## Adds pragma to routine definition.
|
||||
someProc.expectKind(RoutineNodes + {nnkProcTy})
|
||||
var pragmaNode = someProc.pragma
|
||||
if pragmaNode.isNil or pragmaNode.kind == nnkEmpty:
|
||||
@@ -1242,7 +1259,7 @@ proc `body=`*(someProc: NimNode, val: NimNode) {.compileTime.} =
|
||||
proc basename*(a: NimNode): NimNode {.compileTime, benign.}
|
||||
|
||||
proc `$`*(node: NimNode): string {.compileTime.} =
|
||||
## Get the string of an identifier node
|
||||
## Get the string of an identifier node.
|
||||
case node.kind
|
||||
of nnkPostfix:
|
||||
result = node.basename.strVal & "*"
|
||||
@@ -1256,7 +1273,7 @@ proc `$`*(node: NimNode): string {.compileTime.} =
|
||||
badNodeKind node, "$"
|
||||
|
||||
proc ident*(name: string): NimNode {.magic: "StrToIdent", noSideEffect.}
|
||||
## Create a new ident node from a string
|
||||
## Create a new ident node from a string.
|
||||
|
||||
iterator items*(n: NimNode): NimNode {.inline.} =
|
||||
## Iterates over the children of the NimNode ``n``.
|
||||
@@ -1288,22 +1305,22 @@ template findChild*(n: NimNode; cond: untyped): NimNode {.dirty.} =
|
||||
res
|
||||
|
||||
proc insert*(a: NimNode; pos: int; b: NimNode) {.compileTime.} =
|
||||
## Insert node B into A at pos
|
||||
## Insert node ``b`` into node ``a`` at ``pos``.
|
||||
if len(a)-1 < pos:
|
||||
## add some empty nodes first
|
||||
# add some empty nodes first
|
||||
for i in len(a)-1..pos-2:
|
||||
a.add newEmptyNode()
|
||||
a.add b
|
||||
else:
|
||||
## push the last item onto the list again
|
||||
## and shift each item down to pos up one
|
||||
# push the last item onto the list again
|
||||
# and shift each item down to pos up one
|
||||
a.add(a[a.len-1])
|
||||
for i in countdown(len(a) - 3, pos):
|
||||
a[i + 1] = a[i]
|
||||
a[pos] = b
|
||||
|
||||
proc basename*(a: NimNode): NimNode =
|
||||
## Pull an identifier from prefix/postfix expressions
|
||||
## Pull an identifier from prefix/postfix expressions.
|
||||
case a.kind
|
||||
of nnkIdent: return a
|
||||
of nnkPostfix, nnkPrefix: return a[1]
|
||||
@@ -1347,7 +1364,7 @@ proc unpackInfix*(node: NimNode): tuple[left: NimNode; op: string;
|
||||
result = (node[1], $node[0], node[2])
|
||||
|
||||
proc copy*(node: NimNode): NimNode {.compileTime.} =
|
||||
## An alias for copyNimTree().
|
||||
## An alias for `copyNimTree<#copyNimTree,NimNode>`_.
|
||||
return node.copyNimTree()
|
||||
|
||||
when defined(nimVmEqIdent):
|
||||
@@ -1388,7 +1405,7 @@ else:
|
||||
|
||||
|
||||
proc eqIdent*(a, b: string): bool = cmpIgnoreStyle(a, b) == 0
|
||||
## Check if two idents are identical.
|
||||
## Check if two idents are equal.
|
||||
|
||||
proc eqIdent*(node: NimNode; s: string): bool {.compileTime.} =
|
||||
## Check if node is some identifier node (``nnkIdent``, ``nnkSym``, etc.)
|
||||
@@ -1403,7 +1420,7 @@ else:
|
||||
result = false
|
||||
|
||||
proc hasArgOfName*(params: NimNode; name: string): bool {.compileTime.}=
|
||||
## Search nnkFormalParams for an argument.
|
||||
## Search ``nnkFormalParams`` for an argument.
|
||||
expectKind(params, nnkFormalParams)
|
||||
for i in 1 ..< params.len:
|
||||
template node: untyped = params[i]
|
||||
@@ -1411,7 +1428,7 @@ proc hasArgOfName*(params: NimNode; name: string): bool {.compileTime.}=
|
||||
return true
|
||||
|
||||
proc addIdentIfAbsent*(dest: NimNode, ident: string) {.compileTime.} =
|
||||
## Add ident to dest if it is not present. This is intended for use
|
||||
## Add ``ident`` to ``dest`` if it is not present. This is intended for use
|
||||
## with pragmas.
|
||||
for node in dest.children:
|
||||
case node.kind
|
||||
@@ -1585,7 +1602,7 @@ macro getCustomPragmaVal*(n: typed, cp: typed{nkSym}): untyped =
|
||||
|
||||
when not defined(booting):
|
||||
template emit*(e: static[string]): untyped {.deprecated.} =
|
||||
## accepts a single string argument and treats it as nim code
|
||||
## Accepts a single string argument and treats it as nim code
|
||||
## that should be inserted verbatim in the program
|
||||
## Example:
|
||||
##
|
||||
|
||||
Reference in New Issue
Block a user