// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package lex implements lexical analysis for the assembler.
package lex

import (
	"fmt"
	"log"
	"os"
	"strings"
	"text/scanner"

	"cmd/internal/src"
)

// A ScanToken represents an input item. It is a simple wrapping of rune, as

	state := lexText
	if l.insideAction {
		state = lexInsideAction
	}
	for {
		state = state(l)
		if state == nil {
			return l.item
		}
	}
}

// lex creates a new scanner for the input string.
func lex(name, input, left, right string) *lexer {
	if left == "" {
		left = leftDelim
	}
	if right == "" {
		right = rightDelim
	}
	l := &lexer{
		name:         name,

	//	">>" == 1
	//	"->" == 2
	//	"@>" == 3
	r1, ok := p.registerReference(name)
	if !ok {
		return 0
	}
	var op int16
	switch p.next().ScanToken {
	case lex.LSH:
		op = 0
	case lex.RSH:
		op = 1
	case lex.ARR:
		op = 2
	case lex.ROT:
		// following instructions on ARM64 support rotate right
		// AND, ANDS, TST, BIC, BICS, EON, EOR, ORR, MVN, ORN
		op = 3
	}
	tok := p.next()

import org.hamcrest.MatcherAssert.assertThat

import org.junit.Test


class LexerTest {

    @Test
    fun `extracts comments, annotations and top-level blocks`() {

        assertThat(
            lex(
                "/* ... @TaskAction ... */" +
                    "\n// ... @Suppress(\"unused_variable\")" +
                    "\nbuildscript { /*" +
                    "\n ... */" +
                    "\n}" +

// license that can be found in the LICENSE file.

package asm

import (
	"strings"
	"testing"

	"cmd/asm/internal/lex"
)

func tokenize(s string) [][]lex.Token {
	res := [][]lex.Token{}
	if len(s) == 0 {
		return res
	}
	for _, o := range strings.Split(s, ",") {
		res = append(res, lex.Tokenize(o))
	}
	return res
}

func TestErroneous(t *testing.T) {

	type errtest struct {
		pseudo   string

		}
	}
	in.token.text = text
	in.token.endPos = in.pos
}

// peek returns the kind of the next token returned by lex.
func (in *input) peek() tokenKind {
	return in.token.kind
}

// lex is called from the parser to obtain the next input token.
func (in *input) lex() token {
	tok := in.token
	in.readToken()
	return tok
}

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package asm

import (
	"cmd/asm/internal/lex"
	"strings"
	"testing"
	"text/scanner"
)

type exprTest struct {
	input  string
	output int64
	atEOF  bool
}

var exprTests = []exprTest{
	// Simple
	{"0", 0, true},
	{"3", 3, true},
	{"070", 8 * 7, true},

	// s := bytes.NewBuffer([]byte("s.['name'].*.[*].abc.[\"abc\"]"))
	s := bytes.NewBuffer([]byte("S3Object.words.*.id"))
	// s := bytes.NewBuffer([]byte("COUNT(Id)"))
	lex, err := sqlLexer.Lex(s)
	if err != nil {
		t.Fatal(err)
	}
	tokens, err := lexer.ConsumeAll(lex)
	if err != nil {
		t.Fatal(err)
	}
	// for i, t := range tokens {
	// 	fmt.Printf("%d: %#v\n", i, t)
	// }
	if len(tokens) != 7 {

		}
		*errp = e.(error)
	}
}

// startParse initializes the parser, using the lexer.
func (t *Tree) startParse(funcs []map[string]any, lex *lexer, treeSet map[string]*Tree) {
	t.Root = nil
	t.lex = lex
	t.vars = []string{"$"}
	t.funcs = funcs
	t.treeSet = treeSet
	lex.options = lexOptions{
		emitComment: t.Mode&ParseComments != 0,
		breakOK:     !t.hasFunction("break"),
		continueOK:  !t.hasFunction("continue"),

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package asm

import (
	"cmd/asm/internal/lex"
	"strings"
	"testing"
)

type badInstTest struct {
	input, error string
}

func TestAMD64BadInstParser(t *testing.T) {
	testBadInstParser(t, "amd64", []badInstTest{
		// Test AVX512 suffixes.