package parser
import (
"errors"
"regexp"
"strings"
"testing"
"github.com/robertkrimen/otto/ast"
"github.com/robertkrimen/otto/file"
)
func firstErr(err error) error {
switch err := err.(type) {
case ErrorList:
return err[0]
}
return err
}
var matchBeforeAfterSeparator = regexp.MustCompile(`(?m)^[ \t]*---$`)
func testParse(src string) (parser *_parser, program *ast.Program, err error) {
defer func() {
if tmp := recover(); tmp != nil {
switch tmp := tmp.(type) {
case string:
if strings.HasPrefix(tmp, "SyntaxError:") {
parser = nil
program = nil
err = errors.New(tmp)
return
}
}
panic(tmp)
}
}()
parser = newParser("", src)
program, err = parser.parse()
return
}
func TestParseFile(t *testing.T) {
tt(t, func() {
_, err := ParseFile(nil, "", `/abc/`, 0)
is(err, nil)
_, err = ParseFile(nil, "", `/(?!def)abc/`, IgnoreRegExpErrors)
is(err, nil)
_, err = ParseFile(nil, "", `/(?!def)abc/`, 0)
is(err, "(anonymous): Line 1:1 Invalid regular expression: re2: Invalid (?!) <lookahead>")
_, err = ParseFile(nil, "", `/(?!def)abc/; return`, IgnoreRegExpErrors)
is(err, "(anonymous): Line 1:15 Illegal return statement")
})
}
func TestParseFunction(t *testing.T) {
tt(t, func() {
test := func(prm, bdy string, expect interface{}) *ast.FunctionLiteral {
function, err := ParseFunction(prm, bdy)
is(firstErr(err), expect)
return function
}
test("a, b,c,d", "", nil)
test("a, b;,c,d", "", "(anonymous): Line 1:15 Unexpected token ;")
test("this", "", "(anonymous): Line 1:11 Unexpected token this")
test("a, b, c, null", "", "(anonymous): Line 1:20 Unexpected token null")
test("a, b,c,d", "return;", nil)
test("a, b,c,d", "break;", "(anonymous): Line 2:1 Illegal break statement")
test("a, b,c,d", "{}", nil)
})
}
func TestParserErr(t *testing.T) {
tt(t, func() {
test := func(input string, expect interface{}) (*ast.Program, *_parser) {
parser := newParser("", input)
program, err := parser.parse()
is(firstErr(err), expect)
return program, parser
}
program, parser := test("", nil)
program, parser = test(`
var abc;
break; do {
} while(true);
`, "(anonymous): Line 3:9 Illegal break statement")
{
stmt := program.Body[1].(*ast.BadStatement)
is(parser.position(stmt.From).Column, 9)
is(parser.position(stmt.To).Column, 16)
is(parser.slice(stmt.From, stmt.To), "break; ")
}
test("{", "(anonymous): Line 1:2 Unexpected end of input")
test("}", "(anonymous): Line 1:1 Unexpected token }")
test("3ea", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("3in", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("3in []", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("3e", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("3e+", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("3e-", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("3x", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("3x0", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("0x", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("09", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("018", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("01.0", "(anonymous): Line 1:3 Unexpected number")
test("01a", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("0x3in[]", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("\"Hello\nWorld\"", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("\u203f = 10", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("x\\", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("x\\\\", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("x\\u005c", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("x\\u002a", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("x\\\\u002a", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("/\n", "(anonymous): Line 1:1 Invalid regular expression: missing /")
test("var x = /(s/g", "(anonymous): Line 1:9 Invalid regular expression: Unterminated group")
test("0 = 1", "(anonymous): Line 1:1 Invalid left-hand side in assignment")
test("func() = 1", "(anonymous): Line 1:1 Invalid left-hand side in assignment")
test("(1 + 1) = 2", "(anonymous): Line 1:2 Invalid left-hand side in assignment")
test("1++", "(anonymous): Line 1:2 Invalid left-hand side in assignment")
test("1--", "(anonymous): Line 1:2 Invalid left-hand side in assignment")
test("--1", "(anonymous): Line 1:1 Invalid left-hand side in assignment")
test("for((1 + 1) in abc) def();", "(anonymous): Line 1:1 Invalid left-hand side in for-in")
test("[", "(anonymous): Line 1:2 Unexpected end of input")
test("[,", "(anonymous): Line 1:3 Unexpected end of input")
test("1 + {", "(anonymous): Line 1:6 Unexpected end of input")
test("1 + { abc:abc", "(anonymous): Line 1:14 Unexpected end of input")
test("1 + { abc:abc,", "(anonymous): Line 1:15 Unexpected end of input")
test("var abc = /\n/", "(anonymous): Line 1:11 Invalid regular expression: missing /")
test("var abc = \"\n", "(anonymous): Line 1:11 Unexpected token ILLEGAL")
test("var if = 0", "(anonymous): Line 1:5 Unexpected token if")
test("abc + 0 = 1", "(anonymous): Line 1:1 Invalid left-hand side in assignment")
test("+abc = 1", "(anonymous): Line 1:1 Invalid left-hand side in assignment")
test("1 + (", "(anonymous): Line 1:6 Unexpected end of input")
test("\n\n\n{", "(anonymous): Line 4:2 Unexpected end of input")
test("\n/* Some multiline\ncomment */\n)", "(anonymous): Line 4:1 Unexpected token )")
// TODO
//{ set 1 }
//{ get 2 }
//({ set: s(if) { } })
//({ set s(.) { } })
//({ set: s() { } })
//({ set: s(a, b) { } })
//({ get: g(d) { } })
//({ get i() { }, i: 42 })
//({ i: 42, get i() { } })
//({ set i(x) { }, i: 42 })
//({ i: 42, set i(x) { } })
//({ get i() { }, get i() { } })
//({ set i(x) { }, set i(x) { } })
test("function abc(if) {}", "(anonymous): Line 1:14 Unexpected token if")
test("function abc(true) {}", "(anonymous): Line 1:14 Unexpected token true")
test("function abc(false) {}", "(anonymous): Line 1:14 Unexpected token false")
test("function abc(null) {}", "(anonymous): Line 1:14 Unexpected token null")
test("function null() {}", "(anonymous): Line 1:10 Unexpected token null")
test("function true() {}", "(anonymous): Line 1:10 Unexpected token true")
test("function false() {}", "(anonymous): Line 1:10 Unexpected token false")
test("function if() {}", "(anonymous): Line 1:10 Unexpected token if")
test("a b;", "(anonymous): Line 1:3 Unexpected identifier")
test("if.a", "(anonymous): Line 1:3 Unexpected token .")
test("a if", "(anonymous): Line 1:3 Unexpected token if")
test("a class", "(anonymous): Line 1:3 Unexpected reserved word")
test("break\n", "(anonymous): Line 1:1 Illegal break statement")
test("break 1;", "(anonymous): Line 1:7 Unexpected number")
test("for (;;) { break 1; }", "(anonymous): Line 1:18 Unexpected number")
test("continue\n", "(anonymous): Line 1:1 Illegal continue statement")
test("continue 1;", "(anonymous): Line 1:10 Unexpected number")
test("for (;;) { continue 1; }", "(anonymous): Line 1:21 Unexpected number")
test("throw", "(anonymous): Line 1:1 Unexpected end of input")
test("throw;", "(anonymous): Line 1:6 Unexpected token ;")
test("throw \n", "(anonymous): Line 1:1 Unexpected end of input")
test("for (var abc, def in {});", "(anonymous): Line 1:19 Unexpected token in")
test("for ((abc in {});;);", nil)
test("for ((abc in {}));", "(anonymous): Line 1:17 Unexpected token )")
test("for (+abc in {});", "(anonymous): Line 1:1 Invalid left-hand side in for-in")
test("if (false)", "(anonymous): Line 1:11 Unexpected end of input")
test("if (false) abc(); else", "(anonymous): Line 1:23 Unexpected end of input")
test("do", "(anonymous): Line 1:3 Unexpected end of input")
test("while (false)", "(anonymous): Line 1:14 Unexpected end of input")
test("for (;;)", "(anonymous): Line 1:9 Unexpected end of input")
test("with (abc)", "(anonymous): Line 1:11 Unexpected end of input")
test("try {}", "(anonymous): Line 1:1 Missing catch or finally after try")
test("try {} catch {}", "(anonymous): Line 1:14 Unexpected token {")
test("try {} catch () {}", "(anonymous): Line 1:15 Unexpected token )")
test("\u203f = 1", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
// TODO
// const x = 12, y;
// const x, y = 12;
// const x;
// if(true) let a = 1;
// if(true) const a = 1;
test(`new abc()."def"`, "(anonymous): Line 1:11 Unexpected string")
test("/*", "(anonymous): Line 1:3 Unexpected end of input")
test("/**", "(anonymous): Line 1:4 Unexpected end of input")
test("/*\n\n\n", "(anonymous): Line 4:1 Unexpected end of input")
test("/*\n\n\n*", "(anonymous): Line 4:2 Unexpected end of input")
test("/*abc", "(anonymous): Line 1:6 Unexpected end of input")
test("/*abc *", "(anonymous): Line 1:9 Unexpected end of input")
test("\n]", "(anonymous): Line 2:1 Unexpected token ]")
test("\r\n]", "(anonymous): Line 2:1 Unexpected token ]")
test("\n\r]", "(anonymous): Line 3:1 Unexpected token ]")
test("//\r\n]", "(anonymous): Line 2:1 Unexpected token ]")
test("//\n\r]", "(anonymous): Line 3:1 Unexpected token ]")
test("/abc\\\n/", "(anonymous): Line 1:1 Invalid regular expression: missing /")
test("//\r \n]", "(anonymous): Line 3:1 Unexpected token ]")
test("/*\r\n*/]", "(anonymous): Line 2:3 Unexpected token ]")
test("/*\r \n*/]", "(anonymous): Line 3:3 Unexpected token ]")
test("\\\\", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("\\u005c", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("\\abc", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("\\u0000", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("\\u200c = []", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("\\u200D = []", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test(`"\`, "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test(`"\u`, "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("return", "(anonymous): Line 1:1 Illegal return statement")
test("continue", "(anonymous): Line 1:1 Illegal continue statement")
test("break", "(anonymous): Line 1:1 Illegal break statement")
test("switch (abc) { default: continue; }", "(anonymous): Line 1:25 Illegal continue statement")
test("do { abc } *", "(anonymous): Line 1:12 Unexpected token *")
test("while (true) { break abc; }", "(anonymous): Line 1:16 Undefined label 'abc'")
test("while (true) { continue abc; }", "(anonymous): Line 1:16 Undefined label 'abc'")
test("abc: while (true) { (function(){ break abc; }); }", "(anonymous): Line 1:34 Undefined label 'abc'")
test("abc: while (true) { (function(){ abc: break abc; }); }", nil)
test("abc: while (true) { (function(){ continue abc; }); }", "(anonymous): Line 1:34 Undefined label 'abc'")
test(`abc: if (0) break abc; else {}`, nil)
test(`abc: if (0) { break abc; } else {}`, nil)
test(`abc: if (0) { break abc } else {}`, nil)
test("abc: while (true) { abc: while (true) {} }", "(anonymous): Line 1:21 Label 'abc' already exists")
if false {
// TODO When strict mode is implemented
test("(function () { 'use strict'; delete abc; }())", "")
}
test("_: _: while (true) {]", "(anonymous): Line 1:4 Label '_' already exists")
test("_:\n_:\nwhile (true) {]", "(anonymous): Line 2:1 Label '_' already exists")
test("_:\n _:\nwhile (true) {]", "(anonymous): Line 2:4 Label '_' already exists")
test("/Xyzzy(?!Nothing happens)/",
"(anonymous): Line 1:1 Invalid regular expression: re2: Invalid (?!) <lookahead>")
test("function(){}", "(anonymous): Line 1:9 Unexpected token (")
test("\n/*/", "(anonymous): Line 2:4 Unexpected end of input")
test("/*/.source", "(anonymous): Line 1:11 Unexpected end of input")
test("/\\1/.source", "(anonymous): Line 1:1 Invalid regular expression: re2: Invalid \\1 <backreference>")
test("var class", "(anonymous): Line 1:5 Unexpected reserved word")
test("var if", "(anonymous): Line 1:5 Unexpected token if")
test("object Object", "(anonymous): Line 1:8 Unexpected identifier")
test("[object Object]", "(anonymous): Line 1:9 Unexpected identifier")
test("\\u0xyz", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test(`for (var abc, def in {}) {}`, "(anonymous): Line 1:19 Unexpected token in")
test(`for (abc, def in {}) {}`, "(anonymous): Line 1:1 Invalid left-hand side in for-in")
test(`for (var abc=def, ghi=("abc" in {}); true;) {}`, nil)
{
// Semicolon insertion
test("this\nif (1);", nil)
test("while (1) { break\nif (1); }", nil)
test("throw\nif (1);", "(anonymous): Line 1:1 Illegal newline after throw")
test("(function(){ return\nif (1); })", nil)
test("while (1) { continue\nif (1); }", nil)
test("debugger\nif (1);", nil)
}
{ // Reserved words
test("class", "(anonymous): Line 1:1 Unexpected reserved word")
test("abc.class = 1", nil)
test("var class;", "(anonymous): Line 1:5 Unexpected reserved word")
test("const", "(anonymous): Line 1:1 Unexpected reserved word")
test("abc.const = 1", nil)
test("var const;", "(anonymous): Line 1:5 Unexpected reserved word")
test("enum", "(anonymous): Line 1:1 Unexpected reserved word")
test("abc.enum = 1", nil)
test("var enum;", "(anonymous): Line 1:5 Unexpected reserved word")
test("export", "(anonymous): Line 1:1 Unexpected reserved word")
test("abc.export = 1", nil)
test("var export;", "(anonymous): Line 1:5 Unexpected reserved word")
test("extends", "(anonymous): Line 1:1 Unexpected reserved word")
test("abc.extends = 1", nil)
test("var extends;", "(anonymous): Line 1:5 Unexpected reserved word")
test("import", "(anonymous): Line 1:1 Unexpected reserved word")
test("abc.import = 1", nil)
test("var import;", "(anonymous): Line 1:5 Unexpected reserved word")
test("super", "(anonymous): Line 1:1 Unexpected reserved word")
test("abc.super = 1", nil)
test("var super;", "(anonymous): Line 1:5 Unexpected reserved word")
}
{ // Reserved words (strict)
test(`implements`, nil)
test(`abc.implements = 1`, nil)
test(`var implements;`, nil)
test(`interface`, nil)
test(`abc.interface = 1`, nil)
test(`var interface;`, nil)
test(`let`, nil)
test(`abc.let = 1`, nil)
test(`var let;`, nil)
test(`package`, nil)
test(`abc.package = 1`, nil)
test(`var package;`, nil)
test(`private`, nil)
test(`abc.private = 1`, nil)
test(`var private;`, nil)
test(`protected`, nil)
test(`abc.protected = 1`, nil)
test(`var protected;`, nil)
test(`public`, nil)
test(`abc.public = 1`, nil)
test(`var public;`, nil)
test(`static`, nil)
test(`abc.static = 1`, nil)
test(`var static;`, nil)
test(`yield`, nil)
test(`abc.yield = 1`, nil)
test(`var yield;`, nil)
}
})
}
func TestParser(t *testing.T) {
tt(t, func() {
test := func(source string, chk interface{}) *ast.Program {
_, program, err := testParse(source)
is(firstErr(err), chk)
return program
}
test(`
abc
--
[]
`, "(anonymous): Line 3:13 Invalid left-hand side in assignment")
test(`
abc--
[]
`, nil)
test("1\n[]\n", "(anonymous): Line 2:2 Unexpected token ]")
test(`
function abc() {
}
abc()
`, nil)
program := test("", nil)
test("//", nil)
test("/* */", nil)
test("/** **/", nil)
test("/*****/", nil)
test("/*", "(anonymous): Line 1:3 Unexpected end of input")
test("#", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("/**/#", "(anonymous): Line 1:5 Unexpected token ILLEGAL")
test("new +", "(anonymous): Line 1:5 Unexpected token +")
program = test(";", nil)
is(len(program.Body), 1)
is(program.Body[0].(*ast.EmptyStatement).Semicolon, file.Idx(1))
program = test(";;", nil)
is(len(program.Body), 2)
is(program.Body[0].(*ast.EmptyStatement).Semicolon, file.Idx(1))
is(program.Body[1].(*ast.EmptyStatement).Semicolon, file.Idx(2))
program = test("1.2", nil)
is(len(program.Body), 1)
is(program.Body[0].(*ast.ExpressionStatement).Expression.(*ast.NumberLiteral).Literal, "1.2")
program = test("/* */1.2", nil)
is(len(program.Body), 1)
is(program.Body[0].(*ast.ExpressionStatement).Expression.(*ast.NumberLiteral).Literal, "1.2")
program = test("\n", nil)
is(len(program.Body), 0)
test(`
if (0) {
abc = 0
}
else abc = 0
`, nil)
test("if (0) abc = 0 else abc = 0", "(anonymous): Line 1:16 Unexpected token else")
test(`
if (0) {
abc = 0
} else abc = 0
`, nil)
test(`
if (0) {
abc = 1
} else {
}
`, nil)
test(`
do {
} while (true)
`, nil)
test(`
try {
} finally {
}
`, nil)
test(`
try {
} catch (abc) {
} finally {
}
`, nil)
test(`
try {
}
catch (abc) {
}
finally {
}
`, nil)
test(`try {} catch (abc) {} finally {}`, nil)
test(`
do {
do {
} while (0)
} while (0)
`, nil)
test(`
(function(){
try {
if (
1
) {
return 1
}
return 0
} finally {
}
})()
`, nil)
test("abc = ''\ndef", nil)
test("abc = 1\ndef", nil)
test("abc = Math\ndef", nil)
test(`"\'"`, nil)
test(`
abc = function(){
}
abc = 0
`, nil)
test("abc.null = 0", nil)
test("0x41", nil)
test(`"\d"`, nil)
test(`(function(){return this})`, nil)
test(`
Object.defineProperty(Array.prototype, "0", {
value: 100,
writable: false,
configurable: true
});
abc = [101];
abc.hasOwnProperty("0") && abc[0] === 101;
`, nil)
test(`new abc()`, nil)
test(`new {}`, nil)
test(`
limit = 4
result = 0
while (limit) {
limit = limit - 1
if (limit) {
}
else {
break
}
result = result + 1
}
`, nil)
test(`
while (0) {
if (0) {
continue
}
}
`, nil)
test("var \u0061\u0062\u0063 = 0", nil)
// 7_3_1
test("var test7_3_1\nabc = 66;", nil)
test("var test7_3_1\u2028abc = 66;", nil)
// 7_3_3
test("//\u2028 =;", "(anonymous): Line 2:2 Unexpected token =")
// 7_3_10
test("var abc = \u2029;", "(anonymous): Line 2:1 Unexpected token ;")
test("var abc = \\u2029;", "(anonymous): Line 1:11 Unexpected token ILLEGAL")
test("var \\u0061\\u0062\\u0063 = 0;", nil)
test("'", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
test("'\nstr\ning\n'", "(anonymous): Line 1:1 Unexpected token ILLEGAL")
// S7.6_A4.3_T1
test(`var $\u0030 = 0;`, nil)
// S7.6.1.1_A1.1
test(`switch = 1`, "(anonymous): Line 1:8 Unexpected token =")
// S7.8.3_A2.1_T1
test(`.0 === 0.0`, nil)
// 7.8.5-1
test("var regExp = /\\\rn/;", "(anonymous): Line 1:14 Invalid regular expression: missing /")
// S7.8.5_A1.1_T2
test("var regExp = /=/;", nil)
// S7.8.5_A1.2_T1
test("/*/", "(anonymous): Line 1:4 Unexpected end of input")
// Sbp_7.9_A9_T3
test(`
do {
;
} while (false) true
`, nil)
// S7.9_A10_T10
test(`
{a:1
} 3
`, nil)
test(`
abc
++def
`, nil)
// S7.9_A5.2_T1
test(`
for(false;false
) {
break;
}
`, "(anonymous): Line 3:13 Unexpected token )")
// S7.9_A9_T8
test(`
do {};
while (false)
`, "(anonymous): Line 2:18 Unexpected token ;")
// S8.4_A5
test(`
"x\0y"
`, nil)
// S9.3.1_A6_T1
test(`
10e10000
`, nil)
// 10.4.2-1-5
test(`
"abc\
def"
`, nil)
test("'\\\n'", nil)
test("'\\\r\n'", nil)
//// 11.13.1-1-1
test("42 = 42;", "(anonymous): Line 1:1 Invalid left-hand side in assignment")
// S11.13.2_A4.2_T1.3
test(`
abc /= "1"
`, nil)
// 12.1-1
test(`
try{};catch(){}
`, "(anonymous): Line 2:13 Missing catch or finally after try")
// 12.1-3
test(`
try{};finally{}
`, "(anonymous): Line 2:13 Missing catch or finally after try")
// S12.6.3_A11.1_T3
test(`
while (true) {
break abc;
}
`, "(anonymous): Line 3:17 Undefined label 'abc'")
// S15.3_A2_T1
test(`var x / = 1;`, "(anonymous): Line 1:7 Unexpected token /")
test(`
function abc() {
if (0)
return;
else {
}
}
`, nil)
test("//\u2028 var =;", "(anonymous): Line 2:6 Unexpected token =")
test(`
throw
{}
`, "(anonymous): Line 2:13 Illegal newline after throw")
// S7.6.1.1_A1.11
test(`
function = 1
`, "(anonymous): Line 2:22 Unexpected token =")
// S7.8.3_A1.2_T1
test(`0e1`, nil)
test("abc = 1; abc\n++", "(anonymous): Line 2:3 Unexpected end of input")
// ---
test("({ get abc() {} })", nil)
test(`for (abc.def in {}) {}`, nil)
test(`while (true) { break }`, nil)
test(`while (true) { continue }`, nil)
test(`abc=/^(?:(\w+:)\/{2}(\w+(?:\.\w+)*\/?)|(.{0,2}\/{1}))?([/.]*?(?:[^?]+)?\/)?((?:[^/?]+)\.(\w+))(?:\?(\S+)?)?$/,def=/^(?:(\w+:)\/{2})|(.{0,2}\/{1})?([/.]*?(?:[^?]+)?\/?)?$/`, nil)
test(`(function() { try {} catch (err) {} finally {} return })`, nil)
test(`0xde0b6b3a7640080.toFixed(0)`, nil)
test(`/[^-._0-9A-Za-z\xb7\xc0-\xd6\xd8-\xf6\xf8-\u037d\u37f-\u1fff\u200c-\u200d\u203f\u2040\u2070-\u218f]/`, nil)
test(`/[\u0000-\u0008\u000B-\u000C\u000E-\u001F\uD800-\uDFFF\uFFFE-\uFFFF]/`, nil)
test("var abc = 1;\ufeff", nil)
test("\ufeff/* var abc = 1; */", nil)
test(`if (-0x8000000000000000<=abc&&abc<=0x8000000000000000) {}`, nil)
test(`(function(){debugger;return this;})`, nil)
test(`
`, nil)
test(`
var abc = ""
debugger
`, nil)
test(`
var abc = /\[\]$/
debugger
`, nil)
test(`
var abc = 1 /
2
debugger
`, nil)
})
}
func Test_parseStringLiteral(t *testing.T) {
tt(t, func() {
test := func(have, want string) {
have, err := parseStringLiteral(have)
is(err, nil)
is(have, want)
}
test("", "")
test("1(\\\\d+)", "1(\\d+)")
test("\\u2029", "\u2029")
test("abc\\uFFFFabc", "abc\uFFFFabc")
test("[First line \\\nSecond line \\\n Third line\\\n. ]",
"[First line Second line Third line. ]")
test("\\u007a\\x79\\u000a\\x78", "zy\nx")
// S7.8.4_A4.2_T3
test("\\a", "a")
test("\u0410", "\u0410")
// S7.8.4_A5.1_T1
test("\\0", "\u0000")
// S8.4_A5
test("\u0000", "\u0000")
// 15.5.4.20
test("'abc'\\\n'def'", "'abc''def'")
// 15.5.4.20-4-1
test("'abc'\\\r\n'def'", "'abc''def'")
// Octal
test("\\0", "\000")
test("\\00", "\000")
test("\\000", "\000")
test("\\09", "\0009")
test("\\009", "\0009")
test("\\0009", "\0009")
test("\\1", "\001")
test("\\01", "\001")
test("\\001", "\001")
test("\\0011", "\0011")
test("\\1abc", "\001abc")
test("\\\u4e16", "\u4e16")
// err
test = func(have, want string) {
have, err := parseStringLiteral(have)
is(err.Error(), want)
is(have, "")
}
test(`\u`, `invalid escape: \u: len("") != 4`)
test(`\u0`, `invalid escape: \u: len("0") != 4`)
test(`\u00`, `invalid escape: \u: len("00") != 4`)
test(`\u000`, `invalid escape: \u: len("000") != 4`)
test(`\x`, `invalid escape: \x: len("") != 2`)
test(`\x0`, `invalid escape: \x: len("0") != 2`)
test(`\x0`, `invalid escape: \x: len("0") != 2`)
})
}
func Test_parseNumberLiteral(t *testing.T) {
tt(t, func() {
test := func(input string, expect interface{}) {
result, err := parseNumberLiteral(input)
is(err, nil)
is(result, expect)
}
test("0", 0)
test("0x8000000000000000", float64(9.223372036854776e+18))
})
}
func TestPosition(t *testing.T) {
tt(t, func() {
parser := newParser("", "// Lorem ipsum")
// Out of range, idx0 (error condition)
is(parser.slice(0, 1), "")
is(parser.slice(0, 10), "")
// Out of range, idx1 (error condition)
is(parser.slice(1, 128), "")
is(parser.str[0:0], "")
is(parser.slice(1, 1), "")
is(parser.str[0:1], "/")
is(parser.slice(1, 2), "/")
is(parser.str[0:14], "// Lorem ipsum")
is(parser.slice(1, 15), "// Lorem ipsum")
parser = newParser("", "(function(){ return 0; })")
program, err := parser.parse()
is(err, nil)
var node ast.Node
node = program.Body[0].(*ast.ExpressionStatement).Expression.(*ast.FunctionLiteral)
is(node.Idx0(), file.Idx(2))
is(node.Idx1(), file.Idx(25))
is(parser.slice(node.Idx0(), node.Idx1()), "function(){ return 0; }")
is(parser.slice(node.Idx0(), node.Idx1()+1), "function(){ return 0; })")
is(parser.slice(node.Idx0(), node.Idx1()+2), "")
is(node.(*ast.FunctionLiteral).Source, "function(){ return 0; }")
node = program
is(node.Idx0(), file.Idx(2))
is(node.Idx1(), file.Idx(25))
is(parser.slice(node.Idx0(), node.Idx1()), "function(){ return 0; }")
parser = newParser("", "(function(){ return abc; })")
program, err = parser.parse()
is(err, nil)
node = program.Body[0].(*ast.ExpressionStatement).Expression.(*ast.FunctionLiteral)
is(node.(*ast.FunctionLiteral).Source, "function(){ return abc; }")
})
}