structure String.Range : Type

• start : String.Pos
• stop : String.Pos

A position range inside a string. This type is mostly in combination with syntax trees, as there might not be a single underlying string in this case that could be used for a Substring.

instance String.instInhabitedRange : Inhabited String.Range

instance String.instReprRange : Repr String.Range

instance String.instBEqRange : BEq String.Range

instance String.instHashableRange : Hashable String.Range

def String.Range.contains (r : String.Range) (pos : String.Pos) (includeStop : optParam Bool false) : Bool

def String.Range.includes (super : String.Range) (sub : String.Range) : Bool

def Lean.SourceInfo.updateTrailing (trailing : Substring) : Lean.SourceInfo → Lean.SourceInfo

Syntax AST

inductive Lean.IsNode : Lean.Syntax → Prop

• mk: ∀ (info : Lean.SourceInfo) (kind : Lean.SyntaxNodeKind) (args : Array Lean.Syntax), Lean.IsNode (Lean.Syntax.node info kind args)

def Lean.SyntaxNode : Type

def Lean.unreachIsNodeMissing {β : Sort u_1} (h : Lean.IsNode Lean.Syntax.missing) : β

def Lean.unreachIsNodeAtom {β : Sort u_1} {info : Lean.SourceInfo} {val : String} (h : Lean.IsNode (Lean.Syntax.atom info val)) : β

def Lean.unreachIsNodeIdent {β : Sort u_1} {info : Lean.SourceInfo} {rawVal : Substring} {val : Lake.Name} {preresolved : List Lean.Syntax.Preresolved} (h : Lean.IsNode (Lean.Syntax.ident info rawVal val preresolved)) : β

def Lean.isLitKind (k : Lean.SyntaxNodeKind) : Bool

@[inline]

def Lean.SyntaxNode.getKind (n : Lean.SyntaxNode) : Lean.SyntaxNodeKind

@[inline]

def Lean.SyntaxNode.withArgs {β : Sort u_1} (n : Lean.SyntaxNode) (fn : Array Lean.Syntax → β) : β

@[inline]

def Lean.SyntaxNode.getNumArgs (n : Lean.SyntaxNode) : Nat

@[inline]

def Lean.SyntaxNode.getArg (n : Lean.SyntaxNode) (i : Nat) : Lean.Syntax

@[inline]

def Lean.SyntaxNode.getArgs (n : Lean.SyntaxNode) : Array Lean.Syntax

@[inline]

def Lean.SyntaxNode.modifyArgs (n : Lean.SyntaxNode) (fn : Array Lean.Syntax → Array Lean.Syntax) : Lean.Syntax

def Lean.Syntax.getAtomVal : Lean.Syntax → String

def Lean.Syntax.setAtomVal : Lean.Syntax → String → Lean.Syntax

@[inline]

def Lean.Syntax.ifNode {β : Sort u_1} (stx : Lean.Syntax) (hyes : Lean.SyntaxNode → β) (hno : Unit → β) : β

@[inline]

def Lean.Syntax.ifNodeKind {β : Sort u_1} (stx : Lean.Syntax) (kind : Lean.SyntaxNodeKind) (hyes : Lean.SyntaxNode → β) (hno : Unit → β) : β

def Lean.Syntax.asNode : Lean.Syntax → Lean.SyntaxNode

def Lean.Syntax.getIdAt (stx : Lean.Syntax) (i : Nat) : Lake.Name

@[inline]

def Lean.Syntax.modifyArgs (stx : Lean.Syntax) (fn : Array Lean.Syntax → Array Lean.Syntax) : Lean.Syntax

@[inline]

def Lean.Syntax.modifyArg (stx : Lean.Syntax) (i : Nat) (fn : Lean.Syntax → Lean.Syntax) : Lean.Syntax

@[specialize #[]]

partial def Lean.Syntax.replaceM {m : Type → Type} [Monad m] (fn : Lean.Syntax → m (Option Lean.Syntax)) : Lean.Syntax → m Lean.Syntax

@[specialize #[]]

partial def Lean.Syntax.rewriteBottomUpM {m : Type → Type} [Monad m] (fn : Lean.Syntax → m Lean.Syntax) : Lean.Syntax → m Lean.Syntax

@[inline]

def Lean.Syntax.rewriteBottomUp (fn : Lean.Syntax → Lean.Syntax) (stx : Lean.Syntax) : Lean.Syntax

def Lean.Syntax.updateLeading : Lean.Syntax → Lean.Syntax

Set SourceInfo.leading according to the trailing stop of the preceding token. The result is a round-tripping syntax tree IF, in the input syntax tree,

• all leading stops, atom contents, and trailing starts are correct
• trailing stops are between the trailing start and the next leading stop.

Remark: after parsing, all SourceInfo.leading fields are empty. The Syntax argument is the output produced by the parser for source. This function "fixes" the source.leading field.

Additionally, we try to choose "nicer" splits between leading and trailing stops according to some heuristics so that e.g. comments are associated to the (intuitively) correct token.

Note that the SourceInfo.trailing fields must be correct. The implementation of this Function relies on this property.

partial def Lean.Syntax.updateTrailing (trailing : Substring) : Lean.Syntax → Lean.Syntax

partial def Lean.Syntax.getTailWithPos : Lean.Syntax → Option Lean.Syntax

def Lean.Syntax.identComponents (stx : Lean.Syntax) (nFields? : optParam (Option Nat) none) : List Lean.Syntax

Split an ident into its dot-separated components while preserving source info. Macro scopes are first erased. For example, `foo.bla.boo._@._hyg.4 ↦ [`foo, `bla, `boo]. If nFields is set, we take that many fields from the end and keep the remaining components as one name. For example, `foo.bla.boo with (nFields := 1) ↦ [`foo.bla, `boo].

def Lean.Syntax.identComponents.nameComps (n : Lake.Name) (nFields? : Option Nat) : List Lake.Name

structure Lean.Syntax.TopDown : Type

• firstChoiceOnly : Bool
• stx : Lean.Syntax

def Lean.Syntax.topDown (stx : Lean.Syntax) (firstChoiceOnly : optParam Bool false) : Lean.Syntax.TopDown

for _ in stx.topDown iterates through each node and leaf in stx top-down, left-to-right. If firstChoiceOnly is true, only visit the first argument of each choice node.

instance Lean.Syntax.instForInTopDownSyntax {m : Type u_1 → Type u_2} : ForIn m Lean.Syntax.TopDown Lean.Syntax

@[specialize #[]]

partial def Lean.Syntax.instForInTopDownSyntax.loop {m : Type u_1 → Type u_2} : {β : Type u_1} → [inst : Monad m] → (Lean.Syntax → β → m (ForInStep β)) → Bool → Lean.Syntax → β → [inst : Inhabited β] → m (ForInStep β)

partial def Lean.Syntax.reprint (stx : Lean.Syntax) : Option String

def Lean.Syntax.reprint.reprintLeaf (info : Lean.SourceInfo) (val : String) : String

def Lean.Syntax.hasMissing (stx : Lean.Syntax) : Bool

def Lean.Syntax.getRange? (stx : Lean.Syntax) (canonicalOnly : optParam Bool false) : Option String.Range

structure Lean.Syntax.Traverser : Type

• cur : Lean.Syntax
• parents : Array Lean.Syntax
• idxs : Array Nat

Represents a cursor into a syntax tree that can be read, written, and advanced down/up/left/right. Indices are allowed to be out-of-bound, in which case cur is Syntax.missing. If the Traverser is used linearly, updates are linear in the Syntax object as well.

def Lean.Syntax.Traverser.fromSyntax (stx : Lean.Syntax) : Lean.Syntax.Traverser

def Lean.Syntax.Traverser.setCur (t : Lean.Syntax.Traverser) (stx : Lean.Syntax) : Lean.Syntax.Traverser

def Lean.Syntax.Traverser.down (t : Lean.Syntax.Traverser) (idx : Nat) : Lean.Syntax.Traverser

Advance to the idx-th child of the current node.

def Lean.Syntax.Traverser.up (t : Lean.Syntax.Traverser) : Lean.Syntax.Traverser

Advance to the parent of the current node, if any.

def Lean.Syntax.Traverser.left (t : Lean.Syntax.Traverser) : Lean.Syntax.Traverser

Advance to the left sibling of the current node, if any.

def Lean.Syntax.Traverser.right (t : Lean.Syntax.Traverser) : Lean.Syntax.Traverser

Advance to the right sibling of the current node, if any.

class Lean.Syntax.MonadTraverser (m : Type → Type) : Type 1

• st : MonadState Lean.Syntax.Traverser m

Monad class that gives read/write access to a Traverser.

def Lean.Syntax.MonadTraverser.getCur {m : Type → Type} [Monad m] [t : Lean.Syntax.MonadTraverser m] : m Lean.Syntax

def Lean.Syntax.MonadTraverser.setCur {m : Type → Type} [t : Lean.Syntax.MonadTraverser m] (stx : Lean.Syntax) : m Unit

def Lean.Syntax.MonadTraverser.goDown {m : Type → Type} [t : Lean.Syntax.MonadTraverser m] (idx : Nat) : m Unit

def Lean.Syntax.MonadTraverser.goUp {m : Type → Type} [t : Lean.Syntax.MonadTraverser m] : m Unit

def Lean.Syntax.MonadTraverser.goLeft {m : Type → Type} [t : Lean.Syntax.MonadTraverser m] : m Unit

def Lean.Syntax.MonadTraverser.goRight {m : Type → Type} [t : Lean.Syntax.MonadTraverser m] : m Unit

def Lean.Syntax.MonadTraverser.getIdx {m : Type → Type} [Monad m] [t : Lean.Syntax.MonadTraverser m] : m Nat

@[inline]

def Lean.SyntaxNode.getIdAt (n : Lean.SyntaxNode) (i : Nat) : Lake.Name

def Lean.mkListNode (args : Array Lean.Syntax) : Lean.Syntax

def Lean.Syntax.isQuot : Lean.Syntax → Bool

def Lean.Syntax.getQuotContent (stx : Lean.Syntax) : Lean.Syntax

def Lean.Syntax.isAntiquot : Lean.Syntax → Bool

def Lean.Syntax.isAntiquots (stx : Lean.Syntax) : Bool

def Lean.Syntax.getCanonicalAntiquot (stx : Lean.Syntax) : Lean.Syntax

def Lean.Syntax.mkAntiquotNode (kind : Lake.Name) (term : Lean.Syntax) (nesting : optParam Nat 0) (name : optParam (Option String) none) (isPseudoKind : optParam Bool false) : Lean.Syntax

def Lean.Syntax.isEscapedAntiquot (stx : Lean.Syntax) : Bool

def Lean.Syntax.unescapeAntiquot (stx : Lean.Syntax) : Lean.Syntax

def Lean.Syntax.getAntiquotTerm (stx : Lean.Syntax) : Lean.Syntax

def Lean.Syntax.antiquotKind? : Lean.Syntax → Option (Lean.SyntaxNodeKind × Bool)

Return kind of parser expected at this antiquotation, and whether it is a "pseudo" kind (see mkAntiquot).

def Lean.Syntax.antiquotKinds (stx : Lean.Syntax) : List (Lean.SyntaxNodeKind × Bool)

def Lean.Syntax.antiquotSpliceKind? : Lean.Syntax → Option Lean.SyntaxNodeKind

def Lean.Syntax.isAntiquotSplice (stx : Lean.Syntax) : Bool

def Lean.Syntax.getAntiquotSpliceContents (stx : Lean.Syntax) : Array Lean.Syntax

def Lean.Syntax.getAntiquotSpliceSuffix (stx : Lean.Syntax) : Lean.Syntax

def Lean.Syntax.mkAntiquotSpliceNode (kind : Lean.SyntaxNodeKind) (contents : Array Lean.Syntax) (suffix : String) (nesting : optParam Nat 0) : Lean.Syntax

def Lean.Syntax.antiquotSuffixSplice? : Lean.Syntax → Option Lean.SyntaxNodeKind

def Lean.Syntax.isAntiquotSuffixSplice (stx : Lean.Syntax) : Bool

def Lean.Syntax.getAntiquotSuffixSpliceInner (stx : Lean.Syntax) : Lean.Syntax

def Lean.Syntax.mkAntiquotSuffixSpliceNode (kind : Lean.SyntaxNodeKind) (inner : Lean.Syntax) (suffix : String) : Lean.Syntax

def Lean.Syntax.isTokenAntiquot (stx : Lean.Syntax) : Bool

def Lean.Syntax.isAnyAntiquot (stx : Lean.Syntax) : Bool

@[inline, reducible]

abbrev Lean.Syntax.Stack : Type

List of Syntax nodes in which each succeeding element is the parent of the current. The associated index is the index of the preceding element in the list of children of the current element.

def Lean.Syntax.findStack? (root : Lean.Syntax) (visit : Lean.Syntax → Bool) (accept : optParam (Lean.Syntax → Bool) fun stx => !Lean.Syntax.hasArgs stx) : Option Lean.Syntax.Stack

Return stack of syntax nodes satisfying visit, starting with such a node that also fulfills accept (default "is leaf"), and ending with the root.

partial def Lean.Syntax.findStack?.go (visit : Lean.Syntax → Bool) (accept : optParam (Lean.Syntax → Bool) fun stx => !Lean.Syntax.hasArgs stx) (stack : Lean.Syntax.Stack) (stx : Lean.Syntax) : Option Lean.Syntax.Stack

def Lean.Syntax.Stack.matches (stack : Lean.Syntax.Stack) (pattern : List (Option Lean.SyntaxNodeKind)) : Bool

Compare the SyntaxNodeKinds in pattern to those of the Syntax elements in stack. Return false if stack is shorter than pattern.