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Code Issues Releases Activity

Add Lean lexer (#1071)

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Resolves #908
This commit is contained in:
Michał Dobranowski
2025-04-20 00:13:51 +02:00
committed by GitHub
parent 5409db0af0
commit 22859e6281
3 changed files with 272 additions and 0 deletions
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56
lexers/embedded/lean.xml Normal file
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<lexer>
<config>
<name>Lean4</name>
<alias>lean4</alias>
<alias>lean</alias>
<filename>*.lean</filename>
<mime_type>text/x-lean4</mime_type>
<mime_type>text/x-lean</mime_type>
</config>
<rules>
<state name="expression">
<rule pattern="\s+"><token type="TextWhitespace"/></rule>
<rule pattern="/--"><token type="LiteralStringDoc"/><push state="docstring"/></rule>
<rule pattern="/-"><token type="Comment"/><push state="comment"/></rule>
<rule pattern="--.*$"><token type="CommentSingle"/></rule>
<rule pattern="\b(Type|Prop|Sort)\b"><token type="KeywordType"/></rule>
<rule pattern="\b(sorry|admit)\b"><token type="GenericError"/></rule>
<rule pattern="(!=|\#|\&amp;|\&amp;\&amp;|\*|\+|\-|/|@|!|\-\.|\-&gt;|\.|\.\.|\.\.\.|::|:&gt;|;|;;|&lt;|&lt;\-|=|==|&gt;|_|\||\|\||\~|=&gt;|&lt;=|&gt;=|/\\|\\/|∀|Π|λ|↔|∧|∨|≠|≤|≥|¬|⁻¹|⬝|▸|→|∃|≈|×|⌞|⌟|≡|⟨|⟩|↦)"><token type="NameBuiltinPseudo"/></rule>
<rule pattern="(\(|\)|:|\{|\}|\[|\]|⦃|⦄|:=|,)"><token type="Operator"/></rule>
<rule pattern="(?![λΠΣ])[_a-zA-Zα-ωΑ-Ωϊ-ϻἀ-῾℀-⅏𝒜-𝖟](?:(?![λΠΣ])[_a-zA-Zα-ωΑ-Ωϊ-ϻἀ-῾℀-⅏𝒜-𝖟0-9&#x27;ⁿ-₉ₐ-ₜᵢ-ᵪ!?])*"><token type="Name"/></rule>
<rule pattern="``?(?![λΠΣ])[_a-zA-Zα-ωΑ-Ωϊ-ϻἀ-῾℀-⅏𝒜-𝖟](?:(?![λΠΣ])[_a-zA-Zα-ωΑ-Ωϊ-ϻἀ-῾℀-⅏𝒜-𝖟0-9&#x27;ⁿ-₉ₐ-ₜᵢ-ᵪ!?])*(\.(?![λΠΣ])[_a-zA-Zα-ωΑ-Ωϊ-ϻἀ-῾℀-⅏𝒜-𝖟](?:(?![λΠΣ])[_a-zA-Zα-ωΑ-Ωϊ-ϻἀ-῾℀-⅏𝒜-𝖟0-9&#x27;ⁿ-₉ₐ-ₜᵢ-ᵪ!?])*)*"><token type="LiteralStringSymbol"/></rule>
<rule pattern="(?&lt;=\.)\d+"><token type="LiteralNumber"/></rule>
<rule pattern="(\d+\.\d*)([eE][+-]?[0-9]+)?"><token type="LiteralNumberFloat"/></rule>
<rule pattern="\d+"><token type="LiteralNumberInteger"/></rule>
<rule pattern="&quot;"><token type="LiteralStringDouble"/><push state="string"/></rule>
<rule pattern="[~?][a-z][\w\&#x27;]*:"><token type="NameVariable"/></rule>
<rule pattern="\S"><token type="NameBuiltinPseudo"/></rule>
</state>
<state name="root">
<rule pattern="\b(import|unif_hint|renaming|inline|hiding|lemma|variable|theorem|axiom|inductive|structure|universe|alias|\#help|precedence|postfix|prefix|infix|infixl|infixr|notation|\#eval|\#check|\#reduce|\#exit|end|private|using|namespace|instance|section|protected|export|set_option|extends|open|example|\#print|opaque|def|macro|elab|syntax|macro_rules|\#reduce|where|abbrev|noncomputable|class|attribute|\#synth|mutual|scoped|local)\b"><token type="KeywordNamespace"/></rule>
<rule pattern="\b(forall|fun|obtain|from|have|show|assume|let|if|else|then|by|in|with|calc|match|nomatch|do|at)\b"><token type="Keyword"/></rule>
<rule pattern="@\["><token type="KeywordDeclaration"/><push state="attribute"/></rule>
<rule><include state="expression"/></rule>
</state>
<state name="attribute">
<rule pattern="\]"><token type="KeywordDeclaration"/><pop depth="1"/></rule>
<rule><include state="expression"/></rule>
</state>
<state name="comment">
<rule pattern="[^/-]+"><token type="CommentMultiline"/></rule>
<rule pattern="/-"><token type="CommentMultiline"/><push/></rule>
<rule pattern="-/"><token type="CommentMultiline"/><pop depth="1"/></rule>
<rule pattern="[/-]"><token type="CommentMultiline"/></rule>
</state>
<state name="docstring">
<rule pattern="[^/-]+"><token type="LiteralStringDoc"/></rule>
<rule pattern="-/"><token type="LiteralStringDoc"/><pop depth="1"/></rule>
<rule pattern="[/-]"><token type="LiteralStringDoc"/></rule>
</state>
<state name="string">
<rule pattern="[^\\&quot;]+"><token type="LiteralStringDouble"/></rule>
<rule pattern="\\[n&quot;\\\n]"><token type="LiteralStringEscape"/></rule>
<rule pattern="&quot;"><token type="LiteralStringDouble"/><pop depth="1"/></rule>
</state>
</rules>
</lexer>

16
lexers/testdata/lean.actual vendored Normal file
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def f(x : Nat) : Nat := x + 1
-- comment
theorem thm (p q r : Prop) : p ∧ (q ∨ r) → (p ∧ q) ∨ (p ∧ r) := by
intro ⟨hp, hqr⟩
show (p ∧ q) ∨ (p ∧ r)
cases hqr with
| inl hq =>
have hpq : p ∧ q := And.intro hp hq
apply Or.inl
exact hpq
| inr hr =>
have hpr : p ∧ r := And.intro hp hr
apply Or.inr
exact hpr

200
lexers/testdata/lean.expected vendored Normal file
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@@ -0,0 +1,200 @@
[
{"type":"KeywordNamespace","value":"def"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"f"},
{"type":"Operator","value":"("},
{"type":"Name","value":"x"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":":"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"Nat"},
{"type":"Operator","value":")"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":":"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"Nat"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":":"},
{"type":"NameBuiltinPseudo","value":"="},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"x"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"+"},
{"type":"TextWhitespace","value":" "},
{"type":"LiteralNumberInteger","value":"1"},
{"type":"TextWhitespace","value":"\n\n"},
{"type":"CommentSingle","value":"-- comment"},
{"type":"TextWhitespace","value":"\n\n"},
{"type":"KeywordNamespace","value":"theorem"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"thm"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":"("},
{"type":"Name","value":"p"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"q"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"r"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":":"},
{"type":"TextWhitespace","value":" "},
{"type":"KeywordType","value":"Prop"},
{"type":"Operator","value":")"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":":"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"p"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"∧"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":"("},
{"type":"Name","value":"q"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"∨"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"r"},
{"type":"Operator","value":")"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"→"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":"("},
{"type":"Name","value":"p"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"∧"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"q"},
{"type":"Operator","value":")"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"∨"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":"("},
{"type":"Name","value":"p"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"∧"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"r"},
{"type":"Operator","value":")"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":":"},
{"type":"NameBuiltinPseudo","value":"="},
{"type":"TextWhitespace","value":" "},
{"type":"Keyword","value":"by"},
{"type":"TextWhitespace","value":"\n "},
{"type":"Name","value":"intro"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"⟨"},
{"type":"Name","value":"hp"},
{"type":"Operator","value":","},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"hqr"},
{"type":"NameBuiltinPseudo","value":"⟩"},
{"type":"TextWhitespace","value":"\n "},
{"type":"Keyword","value":"show"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":"("},
{"type":"Name","value":"p"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"∧"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"q"},
{"type":"Operator","value":")"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"∨"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":"("},
{"type":"Name","value":"p"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"∧"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"r"},
{"type":"Operator","value":")"},
{"type":"TextWhitespace","value":"\n "},
{"type":"Name","value":"cases"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"hqr"},
{"type":"TextWhitespace","value":" "},
{"type":"Keyword","value":"with"},
{"type":"TextWhitespace","value":"\n "},
{"type":"NameBuiltinPseudo","value":"|"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"inl"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"hq"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"=\u003e"},
{"type":"TextWhitespace","value":"\n "},
{"type":"Keyword","value":"have"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"hpq"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":":"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"p"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"∧"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"q"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":":"},
{"type":"NameBuiltinPseudo","value":"="},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"And"},
{"type":"NameBuiltinPseudo","value":"."},
{"type":"Name","value":"intro"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"hp"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"hq"},
{"type":"TextWhitespace","value":"\n "},
{"type":"Name","value":"apply"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"Or"},
{"type":"NameBuiltinPseudo","value":"."},
{"type":"Name","value":"inl"},
{"type":"TextWhitespace","value":"\n "},
{"type":"Name","value":"exact"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"hpq"},
{"type":"TextWhitespace","value":"\n "},
{"type":"NameBuiltinPseudo","value":"|"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"inr"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"hr"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"=\u003e"},
{"type":"TextWhitespace","value":"\n "},
{"type":"Keyword","value":"have"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"hpr"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":":"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"p"},
{"type":"TextWhitespace","value":" "},
{"type":"NameBuiltinPseudo","value":"∧"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"r"},
{"type":"TextWhitespace","value":" "},
{"type":"Operator","value":":"},
{"type":"NameBuiltinPseudo","value":"="},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"And"},
{"type":"NameBuiltinPseudo","value":"."},
{"type":"Name","value":"intro"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"hp"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"hr"},
{"type":"TextWhitespace","value":"\n "},
{"type":"Name","value":"apply"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"Or"},
{"type":"NameBuiltinPseudo","value":"."},
{"type":"Name","value":"inr"},
{"type":"TextWhitespace","value":"\n "},
{"type":"Name","value":"exact"},
{"type":"TextWhitespace","value":" "},
{"type":"Name","value":"hpr"},
{"type":"TextWhitespace","value":"\n"}
]