1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | import fnName from "./fnName"; import clauseFromAlts from "./clauseFromAlts"; export const SEPARATOR = '___CLAUSEJS_SEPARATOR___'; export function LevelIn( lvl ) { this.level = lvl; this.isLevelIn = true; } export function LevelOut( lvl ) { this.level = lvl; this.isLevelOut = true; } var multipleArgFragmenter = ( { opts: { named }, exprs } ) => { if ( exprs.length === 0 ) { //empty case return []; } else if ( named ) { return exprs.reduce( ( curr, { name, expr }, idx ) => curr .concat( [ `"${name}"`, ', ', expr, ] ) .concat( idx < exprs.length - 1 ? [ ', ', SEPARATOR ] : [] ) , [] ); } else { return exprs.reduce( ( curr, { expr }, idx ) => curr .concat( [ expr ] ) .concat( idx < exprs.length - 1 ? [ ', ', SEPARATOR ] : [] ), [] ); } }; var singleArgFragmenter = ( { opts: { enclosedClause } } ) => [ enclosedClause ]; var Fragmenters = { 'PRED': ( { opts: { predicate } } ) => [ predicate ], 'WALL': ( { opts: { enclosedClause } } ) => [ enclosedClause ], // TODO 'AND': ( { opts: { conformedExprs } } ) => interpose( conformedExprs.map( clauseFromAlts ), [ ', ', SEPARATOR ] ), 'CAT': multipleArgFragmenter, 'OR': multipleArgFragmenter, 'Z_OR_M': singleArgFragmenter, 'O_OR_M': singleArgFragmenter, 'Z_OR_O': singleArgFragmenter, 'COLL_OF': singleArgFragmenter, 'ANY': () => [], // TODO 'MAP_OF': () => [], // TODO 'SHAPE': ( { opts: { conformedArgs: { shapeArgs: { optionalFields: { opt = null, optional = null } = {}, requiredFields: { req = null, required = null } = {} } } } } ) => { return [ '{ ', SEPARATOR, new LevelIn( 1 ) ] .concat( _trimTrailingSeparator( [].concat( ( req || required ) ? [ 'required: ' ].concat( _fieldDefToFrags( ( req || required ) ) ).concat( [ ', ', SEPARATOR ] ) : [] ) .concat( ( opt || optional ) ? [ 'optional: ' ].concat( _fieldDefToFrags( ( opt || optional ) ) ).concat( [ ', ', SEPARATOR ] ) : [] ) ) ) .concat( [ new LevelOut( 1 ), ' }' ] ) }, 'FCLAUSE': ( { opts: { args, ret, fn } } ) => [ '{ ', SEPARATOR, new LevelIn( 1 ) ].concat( _trimTrailingSeparator( [].concat( args ? [ 'args: ', args, ', ', SEPARATOR ] : [] ) .concat( ret ? [ 'ret: ', ret, ', ', SEPARATOR ] : [] ) .concat( fn ? [ 'fn: ', fnName( fn ), '()', ', ', SEPARATOR ] : [] ) ) ) .concat( [ new LevelOut( 1 ), SEPARATOR, ' }' ] ), }; function _fieldDefToFrags( { fieldDefs: { fields } } ) { var r = [ '{ ', SEPARATOR, new LevelIn( 1 ) ]; for ( let key in fields ) { if ( fields.hasOwnProperty( key ) ) { r.push( `"${key}"` ); r.push( ': ' ); const { keyValExprPair, valExpressionOnly } = fields[ key ]; if ( keyValExprPair ) { let { keyExpression, valExpression } = keyValExprPair; r = r.concat( [ '[', ] ) .concat( [ SEPARATOR, '<keyExpression>: ', clauseFromAlts( keyExpression ), ', ', SEPARATOR, '<valExpression>: ', clauseFromAlts( valExpression ) ] ) .concat( [ ']' ] ); } else if ( valExpressionOnly ) { r.push( clauseFromAlts( valExpressionOnly ) ); } r.push( ', ' ); r.push( SEPARATOR ); } } return r.concat( [ new LevelOut( 1 ), SEPARATOR, ' }' ] ); } function _trimTrailingSeparator( frags ) { if ( frags.length > 0 ) { return frags.slice( 0, frags.length - 2 ); } else { return frags; } } function getFragments( clause ) { const fragmenter = Fragmenters[ clause.type ]; if ( !fragmenter ) { console.error( clause ); throw new Error( `Unsupported clause type ${clause.type}` ); } return fragmenter( clause ); } function interpose( arr, interArr ) { if ( arr.length === 0 ) { return arr; } else { return arr.reduce( ( acc, curr, idx ) => { if ( idx < arr.length - 1 ) { return acc.concat( [ curr ] ).concat( interArr ); } else { return acc.concat( [ curr ] ); } }, [] ); } } export default getFragments; |