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package hil
import (
"sync"
"github.com/hashicorp/hil/ast"
)
var parserLock sync.Mutex
var parserResult ast.Node
// Parse parses the given program and returns an executable AST tree.
func Parse(v string) (ast.Node, error) {
// Unfortunately due to the way that goyacc generated parsers are
// formatted, we can only do a single parse at a time without a lot
// of extra work. In the future we can remove this limitation.
parserLock.Lock()
defer parserLock.Unlock()
// Reset our globals
parserResult = nil
// Create the lexer
lex := &parserLex{Input: v}
// Parse!
parserParse(lex)
return parserResult, lex.Err
}
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