58 lines
1.1 KiB
Plaintext
58 lines
1.1 KiB
Plaintext
module IBAF-Start
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imports
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IBAF-Statements
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IBAF-Expressions
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Funcons
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// Language "IBAFlang"
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lexical syntax // Language
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LEX-keyword = "else"
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LEX-keyword = "false"
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LEX-keyword = "if"
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LEX-keyword = "true"
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LEX-keyword = "while"
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LEX-keyword = "int"
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syntax // Language
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context-free syntax // Language
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L-start.L-start--L-statement-S =
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L-statement*
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L-keyword.LEX-keyword =
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LEX-keyword
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context-free syntax // Semantics
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FCT.T-start =
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"start" "[:" L-start ":]"
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FCT-Quoted.LEX-keyword = LEX-keyword
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context-free syntax // Desugaring
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variables // Meta-variables
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L-start = "(:START" [1-9]? ":)" {prefer}
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L-start? = "(:START" [1-9]? "?:)" {prefer}
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L-start* = "(:START" [1-9]? "*:)" {prefer}
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L-start+ = "(:START" [1-9]? "+:)" {prefer}
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L-statement* = "..." [1-9]? {prefer}
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// SDF comments
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lexical syntax
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LEX-id = LEX-keyword {reject}
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lexical restrictions
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LEX-id -/- [A-Za-z0-9]
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context-free syntax
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L-exp.L-exp--L-exp-PLUS-L-exp =
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L-exp "+" L-exp
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{assoc}
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L-exp.L-exp--L-exp-AMPERSAND-AMPERSAND-L-exp =
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L-exp "&&" L-exp
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{assoc}
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sorts // ASTs
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T-start
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