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329 lines
7.1 KiB
329 lines
7.1 KiB
%{
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package query
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import (
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"fmt"
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"strconv"
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"strings"
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"time"
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)
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func logDebugGrammar(format string, v ...interface{}) {
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if debugParser {
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logger.Printf(format, v...)
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}
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}
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%}
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%union {
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s string
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n int
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f float64
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q Query
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pf *float64}
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%token tSTRING tPHRASE tPLUS tMINUS tCOLON tBOOST tNUMBER tSTRING tGREATER tLESS
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tEQUAL tTILDE
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%type <s> tSTRING
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%type <s> tPHRASE
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%type <s> tNUMBER
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%type <s> posOrNegNumber
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%type <s> tTILDE
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%type <s> tBOOST
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%type <q> searchBase
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%type <pf> searchSuffix
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%type <n> searchPrefix
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%%
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input:
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searchParts {
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logDebugGrammar("INPUT")
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};
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searchParts:
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searchPart searchParts {
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logDebugGrammar("SEARCH PARTS")
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}
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searchPart {
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logDebugGrammar("SEARCH PART")
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};
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searchPart:
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searchPrefix searchBase searchSuffix {
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query := $2
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if $3 != nil {
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if query, ok := query.(BoostableQuery); ok {
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query.SetBoost(*$3)
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}
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}
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switch($1) {
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case queryShould:
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yylex.(*lexerWrapper).query.AddShould(query)
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case queryMust:
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yylex.(*lexerWrapper).query.AddMust(query)
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case queryMustNot:
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yylex.(*lexerWrapper).query.AddMustNot(query)
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}
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};
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searchPrefix:
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/* empty */ {
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$$ = queryShould
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}
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tPLUS {
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logDebugGrammar("PLUS")
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$$ = queryMust
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}
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tMINUS {
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logDebugGrammar("MINUS")
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$$ = queryMustNot
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};
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searchBase:
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tSTRING {
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str := $1
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logDebugGrammar("STRING - %s", str)
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var q FieldableQuery
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if strings.HasPrefix(str, "/") && strings.HasSuffix(str, "/") {
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q = NewRegexpQuery(str[1:len(str)-1])
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} else if strings.ContainsAny(str, "*?"){
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q = NewWildcardQuery(str)
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} else {
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q = NewMatchQuery(str)
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}
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$$ = q
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}
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tSTRING tTILDE {
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str := $1
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fuzziness, err := strconv.ParseFloat($2, 64)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("invalid fuzziness value: %v", err))
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}
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logDebugGrammar("FUZZY STRING - %s %f", str, fuzziness)
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q := NewMatchQuery(str)
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q.SetFuzziness(int(fuzziness))
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$$ = q
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}
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tSTRING tCOLON tSTRING tTILDE {
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field := $1
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str := $3
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fuzziness, err := strconv.ParseFloat($4, 64)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("invalid fuzziness value: %v", err))
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}
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logDebugGrammar("FIELD - %s FUZZY STRING - %s %f", field, str, fuzziness)
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q := NewMatchQuery(str)
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q.SetFuzziness(int(fuzziness))
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q.SetField(field)
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$$ = q
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}
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tNUMBER {
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str := $1
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logDebugGrammar("STRING - %s", str)
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q1 := NewMatchQuery(str)
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val, err := strconv.ParseFloat($1, 64)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("error parsing number: %v", err))
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}
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inclusive := true
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q2 := NewNumericRangeInclusiveQuery(&val, &val, &inclusive, &inclusive)
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q := NewDisjunctionQuery([]Query{q1,q2})
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q.queryStringMode = true
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$$ = q
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}
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tPHRASE {
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phrase := $1
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logDebugGrammar("PHRASE - %s", phrase)
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q := NewMatchPhraseQuery(phrase)
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$$ = q
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}
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tSTRING tCOLON tSTRING {
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field := $1
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str := $3
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logDebugGrammar("FIELD - %s STRING - %s", field, str)
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var q FieldableQuery
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if strings.HasPrefix(str, "/") && strings.HasSuffix(str, "/") {
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q = NewRegexpQuery(str[1:len(str)-1])
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} else if strings.ContainsAny(str, "*?"){
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q = NewWildcardQuery(str)
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} else {
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q = NewMatchQuery(str)
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}
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q.SetField(field)
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$$ = q
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}
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tSTRING tCOLON posOrNegNumber {
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field := $1
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str := $3
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logDebugGrammar("FIELD - %s STRING - %s", field, str)
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q1 := NewMatchQuery(str)
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q1.SetField(field)
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val, err := strconv.ParseFloat($3, 64)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("error parsing number: %v", err))
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}
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inclusive := true
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q2 := NewNumericRangeInclusiveQuery(&val, &val, &inclusive, &inclusive)
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q2.SetField(field)
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q := NewDisjunctionQuery([]Query{q1,q2})
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q.queryStringMode = true
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$$ = q
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}
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tSTRING tCOLON tPHRASE {
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field := $1
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phrase := $3
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logDebugGrammar("FIELD - %s PHRASE - %s", field, phrase)
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q := NewMatchPhraseQuery(phrase)
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q.SetField(field)
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$$ = q
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}
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tSTRING tCOLON tGREATER posOrNegNumber {
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field := $1
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min, err := strconv.ParseFloat($4, 64)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("error parsing number: %v", err))
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}
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minInclusive := false
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logDebugGrammar("FIELD - GREATER THAN %f", min)
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q := NewNumericRangeInclusiveQuery(&min, nil, &minInclusive, nil)
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q.SetField(field)
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$$ = q
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}
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tSTRING tCOLON tGREATER tEQUAL posOrNegNumber {
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field := $1
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min, err := strconv.ParseFloat($5, 64)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("error parsing number: %v", err))
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}
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minInclusive := true
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logDebugGrammar("FIELD - GREATER THAN OR EQUAL %f", min)
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q := NewNumericRangeInclusiveQuery(&min, nil, &minInclusive, nil)
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q.SetField(field)
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$$ = q
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}
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tSTRING tCOLON tLESS posOrNegNumber {
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field := $1
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max, err := strconv.ParseFloat($4, 64)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("error parsing number: %v", err))
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}
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maxInclusive := false
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logDebugGrammar("FIELD - LESS THAN %f", max)
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q := NewNumericRangeInclusiveQuery(nil, &max, nil, &maxInclusive)
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q.SetField(field)
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$$ = q
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}
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tSTRING tCOLON tLESS tEQUAL posOrNegNumber {
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field := $1
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max, err := strconv.ParseFloat($5, 64)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("error parsing number: %v", err))
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}
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maxInclusive := true
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logDebugGrammar("FIELD - LESS THAN OR EQUAL %f", max)
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q := NewNumericRangeInclusiveQuery(nil, &max, nil, &maxInclusive)
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q.SetField(field)
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$$ = q
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}
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tSTRING tCOLON tGREATER tPHRASE {
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field := $1
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minInclusive := false
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phrase := $4
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logDebugGrammar("FIELD - GREATER THAN DATE %s", phrase)
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minTime, err := queryTimeFromString(phrase)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("invalid time: %v", err))
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}
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q := NewDateRangeInclusiveQuery(minTime, time.Time{}, &minInclusive, nil)
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q.SetField(field)
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$$ = q
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}
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tSTRING tCOLON tGREATER tEQUAL tPHRASE {
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field := $1
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minInclusive := true
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phrase := $5
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logDebugGrammar("FIELD - GREATER THAN OR EQUAL DATE %s", phrase)
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minTime, err := queryTimeFromString(phrase)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("invalid time: %v", err))
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}
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q := NewDateRangeInclusiveQuery(minTime, time.Time{}, &minInclusive, nil)
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q.SetField(field)
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$$ = q
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}
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tSTRING tCOLON tLESS tPHRASE {
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field := $1
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maxInclusive := false
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phrase := $4
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logDebugGrammar("FIELD - LESS THAN DATE %s", phrase)
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maxTime, err := queryTimeFromString(phrase)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("invalid time: %v", err))
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}
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q := NewDateRangeInclusiveQuery(time.Time{}, maxTime, nil, &maxInclusive)
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q.SetField(field)
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$$ = q
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}
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tSTRING tCOLON tLESS tEQUAL tPHRASE {
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field := $1
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maxInclusive := true
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phrase := $5
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logDebugGrammar("FIELD - LESS THAN OR EQUAL DATE %s", phrase)
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maxTime, err := queryTimeFromString(phrase)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("invalid time: %v", err))
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}
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q := NewDateRangeInclusiveQuery(time.Time{}, maxTime, nil, &maxInclusive)
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q.SetField(field)
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$$ = q
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};
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searchSuffix:
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/* empty */ {
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$$ = nil
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}
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tBOOST {
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$$ = nil
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boost, err := strconv.ParseFloat($1, 64)
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if err != nil {
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yylex.(*lexerWrapper).lex.Error(fmt.Sprintf("invalid boost value: %v", err))
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} else {
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$$ = &boost
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}
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logDebugGrammar("BOOST %f", boost)
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};
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posOrNegNumber:
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tNUMBER {
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$$ = $1
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}
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tMINUS tNUMBER {
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$$ = "-" + $2
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};
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