Method Init

parse/parser/state.go:50–78

Init initializes the state at start of parsing

(src *lexer.File, ast *AST)

// Init initializes the state at start of parsing
func (ps *State) Init(src *lexer.File, ast *AST) {
	// fmt.Println("in init")
	// if ps.Src != nil {
	// 	fmt.Println("was:", ps.Src.Filename)
	// }
	// if src != nil {
	// 	fmt.Println("new:", src.Filename)
	// }
	ps.Src = src
	if ps.AST != nil && ps.AST.This != nil {
		// fmt.Println("deleting old ast")
		ps.AST.DeleteChildren()
	}
	ps.AST = ast
	if ps.AST != nil && ps.AST.This != nil {
		// fmt.Println("deleting new ast")
		ps.AST.DeleteChildren()
	}
	ps.ClearAST()
	ps.Syms.Reset()
	ps.Scopes.Reset()
	ps.Stack.Reset()
	if ps.Src != nil {
		ps.Pos, _ = ps.Src.ValidTokenPos(lexer.PosZero)
	}
	ps.Errs.Reset()
	ps.Trace.Init()
	ps.AllocRules()
}

func (ps *State) ClearAST() {
	ps.Syms.ClearAST()