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31 lines
608 B
Markdown
31 lines
608 B
Markdown
# Semantic Core grammar
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This is an EBNF grammar for the (experimental) core IR language.
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```
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expr ::= expr '.' expr
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| expr ' '+ expr
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| '{' expr (';' expr)* ';'? '}'
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| 'if' expr 'then' expr 'else' expr
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| ('lexical' | 'import' | 'load') expr
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| lit
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| 'let'? lvalue '=' expr
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| '(' expr ')'
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lvalue ::= ident
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| parens expr
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lit ::= '#true'
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| '#false'
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| 'unit'
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| 'frame'
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| lambda
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| ident
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lambda ::= ('λ' | '\') ident ('->' | '→') expr
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ident ::= [A-z_] ([A-z0-9_])*
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| '#{' [^{}]+ '}'
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| '"' [^"]+ '"'
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```
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