Parse EBNF: Difference between revisions
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(Added PicoLisp) |
(Want to {{improve}} both examples.) |
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=={{header|PicoLisp}}== |
=={{header|PicoLisp}}== |
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{{improve|PicoLisp|This is not an EBNF parser. It never uses EBNF. It is a calculator parser, but there is already a calculator parser at [[Arithmetic evaluation#PicoLisp]]. One should adjust this solution to parse the EBNF language, not the calculator language.}} |
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<lang PicoLisp>(de parse (Str) |
<lang PicoLisp>(de parse (Str) |
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(let *L (str Str "") |
(let *L (str Str "") |
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=={{header|Tcl}}== |
=={{header|Tcl}}== |
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{{improve|PicoLisp|This is not an EBNF parser. It never uses EBNF. It is a calculator parser, but there is already a calculator parser at [[Arithmetic evaluation#Tcl]]. One should adjust this solution to parse the EBNF language, not the calculator language.}} |
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Demonstration lexer and parser. Note that this parser supports parenthesized expressions, making the grammar recursive. |
Demonstration lexer and parser. Note that this parser supports parenthesized expressions, making the grammar recursive. |
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<lang tcl>package require Tcl 8.6 |
<lang tcl>package require Tcl 8.6 |
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