90 lines
2.6 KiB
Plaintext
90 lines
2.6 KiB
Plaintext
# This grammar is inspired by the "fancier grammar" tab of the nearley playground : https://omrelli.ug/nearley-playground
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# Look for the PEMDAS system : Parentheses, Exponents (omitted here), Multiplication, and you should guess the rest :)
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@preprocessor esmodule
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@{%
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import {string, filteredVariable, variable, temporalVariable, operation, boolean, number, percentage } from './grammarFunctions'
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%}
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main ->
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AdditionSubstraction {% id %}
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| Comparison {% id %}
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| NonNumericTerminal {% id %}
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NumericTerminal ->
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Variable {% id %}
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| TemporalVariable {% id %}
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| FilteredVariable {% id %}
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| percentage {% id %}
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| number {% id %}
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Parentheses -> "(" AdditionSubstraction ")" {% ([,e]) => e %}
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| NumericTerminal {% id %}
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ComparisonOperator -> ">" | "<" | ">=" | "<=" | "=" | "!="
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Comparison -> Comparable _ ComparisonOperator _ Comparable {% operation('comparison')%}
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Comparable -> ( AdditionSubstraction | NonNumericTerminal) {% ([[e]]) => e %}
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NonNumericTerminal ->
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Boolean {% id %}
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| String {% id %}
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| NegatedVariable {% id %}
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NegatedVariable -> "≠" _ Variable {% ([,,{variable}]) => ({'≠': {explanation: variable} }) %}
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FilteredVariable -> Variable _ Filter {% filteredVariable %}
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Filter -> "[" VariableFragment "]" {% ([,filter]) => filter %}
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TemporalVariable -> Variable _ TemporalTransform {% temporalVariable %}
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TemporalTransform -> "[" Temporality "]" {% d =>d[1] %}
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Temporality -> "annuel" | "mensuel" {% id %}
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#-----
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# Addition and subtraction
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AdditionSubstraction -> AdditionSubstraction _ AdditionSubstractionOperator _ MultiplicationDivision {% operation('calculation') %}
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| MultiplicationDivision {% id %}
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AdditionSubstractionOperator -> "+" {% id %}
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| "-" {% id %}
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MultiplicationDivisionOperator -> "*" {% id %}
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| "/" {% id %}
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# Multiplication and division
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MultiplicationDivision -> MultiplicationDivision _ MultiplicationDivisionOperator _ Parentheses {% operation('calculation') %}
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| Parentheses {% id %}
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Variable -> VariableFragment (_ Dot _ VariableFragment {% ([,,,fragment]) => fragment %}):*
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{% variable %}
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String -> "'" [ .'a-zA-Z\-\u00C0-\u017F ]:+ "'" {% string %}
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VariableFragment -> VariableWord (_ VariableWord {% d=> ' ' + d[1] %}):* {% d => d[0] + d[1].join('') %}
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VariableWord -> [a-zA-Z\u00C0-\u017F] [\-'a-zA-Z\u00C0-\u017F]:* {% d => d[0] + d[1].join('') %}
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Dot -> [\.] {% d => null %}
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_ -> [\s] {% d => null %}
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number -> [0-9]:+ ([\.] [0-9]:+):? {% number %}
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percentage -> [0-9]:+ ([\.] [0-9]:+):? [\%] {% percentage %}
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Boolean -> (
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"oui"
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| "non" ) {% boolean %}
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