mirror of
https://github.com/MontFerret/ferret.git
synced 2025-12-27 23:43:40 +02:00
24752c0f48
* Updated ANTLR and other dependencies. Upgraded Go version * Updated unit tests * Updated CodeQL * Fixed linting errors * Updated build pipeline * Reverted refactoring of build pipeline * Removed outdated examples from E2E tests
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
//go:generate antlr -Xexact-output-dir -o fql -package fql -visitor -Dlanguage=Go antlr/FqlLexer.g4 antlr/FqlParser.g4
|
|
package parser
|
|
|
|
import (
|
|
"github.com/antlr4-go/antlr/v4"
|
|
|
|
"github.com/MontFerret/ferret/pkg/parser/fql"
|
|
)
|
|
|
|
type Parser struct {
|
|
tree *fql.FqlParser
|
|
}
|
|
|
|
func New(query string) *Parser {
|
|
input := antlr.NewInputStream(query)
|
|
// converts tokens to upper case, so now it doesn't matter
|
|
// in which case the tokens were entered
|
|
upper := newCaseChangingStream(input, true)
|
|
|
|
lexer := fql.NewFqlLexer(upper)
|
|
stream := antlr.NewCommonTokenStream(lexer, antlr.TokenDefaultChannel)
|
|
|
|
p := fql.NewFqlParser(stream)
|
|
p.BuildParseTrees = true
|
|
|
|
return &Parser{tree: p}
|
|
}
|
|
|
|
func (p *Parser) GetLiteralNames() []string {
|
|
return p.tree.GetLiteralNames()[:]
|
|
}
|
|
|
|
func (p *Parser) AddErrorListener(listener antlr.ErrorListener) {
|
|
p.tree.AddErrorListener(listener)
|
|
}
|
|
|
|
func (p *Parser) Visit(visitor fql.FqlParserVisitor) interface{} {
|
|
return visitor.VisitProgram(p.tree.Program().(*fql.ProgramContext))
|
|
}
|
|
|
|
func (p *Parser) Walk(listener fql.FqlParserListener) {
|
|
antlr.ParseTreeWalkerDefault.Walk(listener, p.tree.Program())
|
|
}
|