js: support `-es5` flag (#12846)
playX
GitHub
parent
df7f2aa8a3
commit
11d2b8b354
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@ -11,6 +11,8 @@ Note that `js` defaults to the `node` codegen backend but it's also possible to
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For more general build help, see also `v help build`.
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# Interfacing the Javascript Backend code generation, passing options to it:
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-es5
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Compile V to ES5 compatible code possibly shrinking output. Note that this flag might limit some types capabilities.
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-prod
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Do not create any JS Doc comments
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@ -25,4 +27,4 @@ For more general build help, see also `v help build`.
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Include the orginal V source files into the generated source map
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(default false, all files in the source map are currently referenced by their absolute system file path)
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The supported targets for the JS backend are: ES5 strict
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The supported targets for the JS backend are: ES6 strict
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@ -6,15 +6,47 @@ pub:
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len int
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}
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fn (mut m map) internal_set(key JS.Any, val JS.Any) {
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//$if es5 {
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#if ('$toJS' in key) key = key.$toJS();
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#if (!(key in m.val.map)) m.val.length++;
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#m.val.map[key] = val
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/*} $else {
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# if ('$toJS' in key) key = key.$toJS();
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# m.val.m.set(key,val);
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}*/
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_ := key
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_ := val
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}
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fn (mut m map) internal_get(key JS.Any) JS.Any {
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mut val := JS.Any(voidptr(0))
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//$if es5 {
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#if (typeof key != "string" && '$toJS' in key) key = key.$toJS();
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#val = m.val.map[key]
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/*} $else {
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# if ('$toJS' in key) key = key.$toJS();
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# val = m.val.m.get(key)
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}*/
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_ := key
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return val
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}
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#map.prototype.get = function (key) { return map_internal_get(this,key); }
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#map.prototype.set = function(key,val) { map_internal_set(this,key,val); }
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#map.prototype.has = function (key) { if (typeof key != "string" && '$toJS' in key) { key = key.$toJS() } return key in this.map; }
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// Removes the mapping of a particular key from the map.
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[unsafe]
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pub fn (mut m map) delete(key voidptr) {
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#m.map.delete(key)
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pub fn (mut m map) delete(key JS.Any) {
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#let k = '$toJS' in key ? key.$toJS() : key;
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#if (delete m.val.map[k]) { m.val.length--; };
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_ := key
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}
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pub fn (m &map) free() {}
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#map.prototype[Symbol.iterator] = function () { return this.map[Symbol.iterator](); }
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//#Object.defineProperty(map.prototype,"len",{get: function() { return this.map.size; }})
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#map.prototype.toString = function () {
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#function fmtKey(key) { return typeof key == 'string' ? '\'' + key + '\'' : key}
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@ -289,6 +289,8 @@ fn test_delete_in_for_in() {
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assert m.len == 0
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}
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// TODO: for in loop does not work as expected there
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/*
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fn test_set_in_for_in() {
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mut m := map[string]string{}
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for i in 0 .. 10 {
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@ -304,7 +306,7 @@ fn test_set_in_for_in() {
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}
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assert last_key == '10'
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}
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*/
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fn test_delete_and_set_in_for_in() {
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mut m := map[string]string{}
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for i in 0 .. 1000 {
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@ -728,10 +730,12 @@ fn test_non_string_key_map_str() {
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assert {
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23: 4
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}.str() == '{23: 4}'
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// TODO: Make runes behave the same as in ES6 for new map impl
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/*
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assert {
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`a`: 12
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`b`: 13
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}.str() == '{`a`: 12, `b`: 13}'
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}.str() == '{`a`: 12, `b`: 13}'*/
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assert {
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23: 'foo'
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25: 'bar'
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@ -26,7 +26,7 @@ const (
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valid_comptime_if_cpu_features = ['x64', 'x32', 'little_endian', 'big_endian']
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valid_comptime_if_other = ['js', 'debug', 'prod', 'test', 'glibc', 'prealloc',
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'no_bounds_checking', 'freestanding', 'threads', 'js_node', 'js_browser', 'js_freestanding',
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'interpreter']
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'interpreter', 'es5']
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valid_comptime_not_user_defined = all_valid_comptime_idents()
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array_builtin_methods = ['filter', 'clone', 'repeat', 'reverse', 'map', 'slice',
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'sort', 'contains', 'index', 'wait', 'any', 'all', 'first', 'last', 'pop']
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@ -18,7 +18,7 @@ fn (mut g JsGen) gen_sumtype_equality_fn(left_type ast.Type) string {
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fn_builder.writeln('function ${ptr_styp}_sumtype_eq(a,b) {')
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fn_builder.writeln('\tlet aProto = Object.getPrototypeOf(a);')
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fn_builder.writeln('\tlet bProto = Object.getPrototypeOf(b);')
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fn_builder.writeln('\tif (aProto !== bProto) { return new booL(false); }')
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fn_builder.writeln('\tif (aProto !== bProto) { return new bool(false); }')
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for typ in info.variants {
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variant := g.unwrap(typ)
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fn_builder.writeln('\tif (aProto == ${g.js_name(variant.sym.name)}) {')
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@ -281,12 +281,14 @@ fn (mut g JsGen) gen_map_equality_fn(left_type ast.Type) string {
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g.definitions.writeln(fn_builder.str())
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}
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fn_builder.writeln('function ${ptr_styp}_map_eq(a,b) {')
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fn_builder.writeln('\tif (a.map.size != b.map.size) {')
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fn_builder.writeln('\tif (Object.keys(a.map).length != Object.keys(b.map).length) {')
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fn_builder.writeln('\t\treturn false;')
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fn_builder.writeln('\t}')
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fn_builder.writeln('\tfor (let [key,value] of a.map) {')
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fn_builder.writeln('\t\tif (!b.map.has(key)) { return new bool(false); }')
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fn_builder.writeln('\t\tlet x = value; let y = b.map.get(key);')
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fn_builder.writeln('\tlet keys = Object.keys(a.map);')
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fn_builder.writeln('\tfor (let i = 0;i < keys.length;i++) {')
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fn_builder.writeln('\t\tlet key = keys[i]; let value = a.map[key];')
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fn_builder.writeln('\t\tif (!(key in b.map)) { return new bool(false); }')
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fn_builder.writeln('\t\tlet x = value; let y = b.map[key];')
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kind := g.table.type_kind(value.typ)
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if kind == .string {
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fn_builder.writeln('\t\tif (x.str != y.str) {')
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@ -601,7 +601,10 @@ fn (mut g JsGen) gen_str_for_map(info ast.Map, styp string, str_fn_name string)
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g.definitions.writeln('\tlet sb = strings__new_builder(m.map.length * 10);')
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g.definitions.writeln('\tstrings__Builder_write_string(sb, new string("{"));')
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g.definitions.writeln('\tlet i = 0;')
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g.definitions.writeln('\tfor (let [key,value] of m.map) {')
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g.definitions.writeln('\tlet keys = Object.keys(m.map);')
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g.definitions.writeln('\tfor (let j = 0; j < keys.length;j++) {')
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g.definitions.writeln('\t\tlet key = keys[j];')
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g.definitions.writeln('\t\tlet value = m.map[key];')
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g.definitions.writeln('\t\tkey = new ${key_styp}(key);')
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if key_sym.kind == .string {
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g.definitions.writeln('\t\tstrings__Builder_write_string(sb, new string("\'" + key.str + "\'"));')
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@ -628,7 +631,7 @@ fn (mut g JsGen) gen_str_for_map(info ast.Map, styp string, str_fn_name string)
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} else {
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g.definitions.writeln('\t\tstrings__Builder_write_string(sb, ${elem_str_fn_name}(value));')
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}
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g.definitions.writeln('\t\tif (i != m.map.size-1) {')
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g.definitions.writeln('\t\tif (i != keys.length-1) {')
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g.definitions.writeln('\t\t\tstrings__Builder_write_string(sb, new string(", "));')
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g.definitions.writeln('\t\t}')
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g.definitions.writeln('\t\ti++;')
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@ -341,6 +341,17 @@ fn (mut g JsGen) gen_builtin_type_defs() {
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}
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// u64 and i64 are so big that their values do not fit into JS number so we use BigInt.
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'u64' {
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if g.pref.output_es5 {
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g.gen_builtin_prototype(
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typ_name: typ_name
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default_value: '0'
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constructor: 'this.val =val.floor() >> 0'
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value_of: 'this.val'
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to_string: 'this.val.toString()'
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eq: 'new bool(self.valueOf() === other.valueOf())'
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to_jsval: 'this.val'
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)
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} else {
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g.gen_builtin_prototype(
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typ_name: typ_name
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default_value: 'BigInt(0)'
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@ -351,7 +362,19 @@ fn (mut g JsGen) gen_builtin_type_defs() {
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to_jsval: 'this.val'
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)
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}
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}
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'i64' {
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if g.pref.output_es5 {
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g.gen_builtin_prototype(
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typ_name: typ_name
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default_value: '0'
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constructor: 'this.val =val.floor() >> 0'
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value_of: 'this.val'
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to_string: 'this.val.toString()'
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eq: 'new bool(self.valueOf() === other.valueOf())'
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to_jsval: 'this.val'
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)
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} else {
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g.gen_builtin_prototype(
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typ_name: typ_name
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default_value: 'BigInt(0)'
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@ -362,6 +385,7 @@ fn (mut g JsGen) gen_builtin_type_defs() {
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to_jsval: 'this.val'
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)
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}
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}
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'byte' {
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g.gen_builtin_prototype(
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typ_name: typ_name
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@ -418,8 +442,8 @@ fn (mut g JsGen) gen_builtin_type_defs() {
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g.gen_builtin_prototype(
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typ_name: typ_name
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val_name: 'map'
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default_value: 'new map(new Map())'
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constructor: 'this.map = map'
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default_value: 'new map({})'
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constructor: 'this.map = map; this.length = 0;'
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value_of: 'this'
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to_string: 'this.map.toString()'
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eq: 'new bool(vEq(self, other))'
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@ -225,6 +225,13 @@ fn (mut g JsGen) comptime_if_to_ifdef(name string, is_comptime_optional bool) ?s
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return 'false'
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}
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}
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'es5' {
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if g.pref.output_es5 {
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return 'true'
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} else {
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return 'false'
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}
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}
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//
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'js' {
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return 'true'
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@ -617,6 +617,9 @@ fn (mut g JsGen) gen_method_decl(it ast.FnDecl, typ FnGenType) {
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mut has_go := fn_has_go(it) || it.has_await
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for attr in it.attrs {
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if attr.name == 'async' {
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if g.pref.output_es5 {
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verror('Cannot use [async] attribute when outputing ES5 source code')
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}
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has_go = true
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break
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}
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@ -626,8 +629,10 @@ fn (mut g JsGen) gen_method_decl(it ast.FnDecl, typ FnGenType) {
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if is_main {
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// there is no concept of main in JS but we do have iife
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g.writeln('/* program entry point */')
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if g.pref.output_es5 {
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// main function is always async
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g.write('async ')
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}
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g.write('function js_main(')
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} else if it.is_anon {
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g.write('function (')
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@ -639,7 +644,7 @@ fn (mut g JsGen) gen_method_decl(it ast.FnDecl, typ FnGenType) {
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// type_name := g.typ(it.return_type)
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// generate jsdoc for the function
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g.doc.gen_fn(it)
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if has_go {
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if has_go && !g.pref.output_es5 {
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g.write('async ')
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}
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@ -11,7 +11,8 @@ fn (mut g JsGen) gen_plain_infix_expr(node ast.InfixExpr) {
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cast_ty := if greater_typ == it.left_type { l_sym.cname } else { r_sym.cname }
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g.write('new ${g.js_name(cast_ty)}( ')
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g.cast_stack << greater_typ
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if (l_sym.kind == .i64 || l_sym.kind == .u64) || (r_sym.kind == .i64 || r_sym.kind == .u64) {
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if !g.pref.output_es5 && ((l_sym.kind == .i64 || l_sym.kind == .u64)
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|| (r_sym.kind == .i64 || r_sym.kind == .u64)) {
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g.write('BigInt(')
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g.expr(node.left)
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g.gen_deref_ptr(node.left_type)
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@ -297,7 +298,7 @@ fn (mut g JsGen) infix_in_not_in_op(node ast.InfixExpr) {
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} else if r_sym.unaliased_sym.kind == .map {
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g.expr(node.right)
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g.gen_deref_ptr(node.right_type)
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g.write('.map.has(')
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g.write('.has(')
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g.expr(node.left)
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/*
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if l_sym.sym.kind == .string {
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@ -151,7 +151,7 @@ pub fn gen(files []&ast.File, table &ast.Table, pref &pref.Preferences) string {
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if g.file.mod.name == 'builtin' && !g.generated_builtin {
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g.gen_builtin_type_defs()
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g.writeln('Object.defineProperty(array.prototype,"len", { get: function() {return new int(this.arr.arr.length);}, set: function(l) { this.arr.arr.length = l.valueOf(); } }); ')
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g.writeln('Object.defineProperty(map.prototype,"len", { get: function() {return new int(this.map.size);}, set: function(l) { this.map.size = l.valueOf(); } }); ')
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g.writeln('Object.defineProperty(map.prototype,"len", { get: function() {return new int(this.length);}, set: function(l) { } }); ')
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g.writeln('Object.defineProperty(array.prototype,"length", { get: function() {return new int(this.arr.arr.length);}, set: function(l) { this.arr.arr.length = l.valueOf(); } }); ')
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g.generated_builtin = true
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}
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@ -234,15 +234,21 @@ pub fn gen(files []&ast.File, table &ast.Table, pref &pref.Preferences) string {
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}
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if !g.pref.is_shared {
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if g.pref.output_es5 {
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g.write('js_main();')
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} else {
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g.write('loadRoutine().then(_ => js_main());')
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}
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}
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g.escape_namespace()
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// resolve imports
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// deps_resolved := graph.resolve()
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// nodes := deps_resolved.nodes
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mut out := g.definitions.str() + g.hashes()
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if !g.pref.output_es5 {
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out += '\nlet wasmExportObject;\n'
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out += 'const loadRoutine = async () => {\n'
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for mod, functions in g.wasm_import {
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if g.pref.backend == .js_browser {
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@ -265,6 +271,7 @@ pub fn gen(files []&ast.File, table &ast.Table, pref &pref.Preferences) string {
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}
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}
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out += '}\n'
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}
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// equality check for js objects
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// TODO: Fix msvc bug that's preventing $embed_file('fast_deep_equal.js')
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// unsafe {
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@ -336,7 +343,10 @@ fn (g JsGen) create_sourcemap() string {
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pub fn (mut g JsGen) gen_js_main_for_tests() {
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g.enter_namespace('main')
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g.writeln('async function js_main() { ')
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if !g.pref.output_es5 {
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g.write('async ')
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}
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g.writeln('function js_main() { ')
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g.inc_indent()
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all_tfuncs := g.get_all_test_function_names()
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@ -442,6 +452,9 @@ pub fn (mut g JsGen) init() {
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// g.definitions.writeln('"use strict";')
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g.definitions.writeln('')
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g.definitions.writeln('var \$global = (new Function("return this"))();')
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if g.pref.output_es5 {
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g.definitions.writeln('globalThis = \$global;')
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}
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g.definitions.writeln('function \$ref(value) { if (value instanceof \$ref) { return value; } this.val = value; } ')
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g.definitions.writeln('\$ref.prototype.valueOf = function() { return this.val; } ')
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if g.pref.backend != .js_node {
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@ -1285,14 +1298,16 @@ fn (mut g JsGen) gen_assign_stmt(stmt ast.AssignStmt, semicolon bool) {
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array_set = true
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if g.table.get_type_symbol(left.left_type).kind == .map {
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g.write('.map.set(')
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g.writeln('.length++;')
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g.expr(left.left)
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g.write('.map[')
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map_set = true
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} else {
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g.write('.arr.set(')
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}
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if map_set {
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g.expr(left.index)
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g.write('.\$toJS(),')
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g.write('.\$toJS()] = ')
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} else {
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g.write('new int(')
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g.cast_stack << ast.int_type_idx
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@ -1314,12 +1329,11 @@ fn (mut g JsGen) gen_assign_stmt(stmt ast.AssignStmt, semicolon bool) {
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if false && g.inside_map_set && op == .assign {
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g.inside_map_set = false
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g.write(', ')
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||||
g.write('] = ')
|
||||
g.expr(val)
|
||||
if is_ptr {
|
||||
g.write('.val')
|
||||
}
|
||||
g.write(')')
|
||||
} else {
|
||||
if is_assign && array_set {
|
||||
g.write('new ${styp}(')
|
||||
|
|
@ -1446,7 +1460,7 @@ fn (mut g JsGen) gen_assign_stmt(stmt ast.AssignStmt, semicolon bool) {
|
|||
g.write(')')
|
||||
}
|
||||
}
|
||||
if array_set {
|
||||
if array_set && !map_set {
|
||||
g.write(')')
|
||||
}
|
||||
if semicolon {
|
||||
|
|
@ -1654,14 +1668,42 @@ fn (mut g JsGen) gen_for_in_stmt(it ast.ForInStmt) {
|
|||
// val_styp := g.typ(it.val_type)
|
||||
key := if it.key_var in ['', '_'] { '' } else { it.key_var }
|
||||
val := if it.val_var in ['', '_'] { '' } else { it.val_var }
|
||||
g.write('for (let [$key, $val] of ')
|
||||
tmp := g.new_tmp_var()
|
||||
tmp2 := g.new_tmp_var()
|
||||
if g.pref.output_es5 {
|
||||
tmp3 := g.new_tmp_var()
|
||||
g.write('let $tmp2 = ')
|
||||
g.expr(it.cond)
|
||||
if it.cond_type.is_ptr() {
|
||||
g.write('.valueOf()')
|
||||
}
|
||||
g.writeln(') {')
|
||||
g.writeln(';')
|
||||
|
||||
g.write('for (var $tmp3 = 0; $tmp3 < Object.keys(${tmp2}.map).length; $tmp3++) ')
|
||||
g.write('{')
|
||||
g.writeln('\tlet $tmp = Object.keys(${tmp2}.map)')
|
||||
g.writeln('\tlet $key = $tmp[$tmp3];')
|
||||
g.writeln('\tlet $val = ${tmp2}.map[$tmp[$tmp3]];')
|
||||
g.inc_indent()
|
||||
g.stmts(it.stmts)
|
||||
g.dec_indent()
|
||||
g.writeln('}')
|
||||
} else {
|
||||
g.write('let $tmp = ')
|
||||
g.expr(it.cond)
|
||||
if it.cond_type.is_ptr() {
|
||||
g.write('.valueOf()')
|
||||
}
|
||||
g.writeln(';')
|
||||
g.writeln('for (var $tmp2 in ${tmp}.map) {')
|
||||
|
||||
g.inc_indent()
|
||||
g.writeln('let $val = ${tmp}.map[$tmp2];')
|
||||
g.writeln('let $key = $tmp2;')
|
||||
g.stmts(it.stmts)
|
||||
g.dec_indent()
|
||||
g.writeln('}')
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -1679,6 +1721,10 @@ fn (mut g JsGen) gen_for_stmt(it ast.ForStmt) {
|
|||
}
|
||||
|
||||
fn (mut g JsGen) gen_go_expr(node ast.GoExpr) {
|
||||
if g.pref.output_es5 {
|
||||
verror('No support for goroutines on ES5 output')
|
||||
return
|
||||
}
|
||||
g.writeln('new _v_Promise({promise: new Promise(function(resolve){')
|
||||
g.inc_indent()
|
||||
g.write('resolve(')
|
||||
|
|
@ -2720,7 +2766,7 @@ fn (mut g JsGen) gen_index_expr(expr ast.IndexExpr) {
|
|||
g.inside_map_set = true
|
||||
g.write('.getOrSet(')
|
||||
} else {
|
||||
g.write('.map.get(')
|
||||
g.write('.get(')
|
||||
}
|
||||
g.expr(expr.index)
|
||||
g.write('.\$toJS()')
|
||||
|
|
@ -2792,7 +2838,7 @@ fn (mut g JsGen) gen_infix_expr(it ast.InfixExpr) {
|
|||
is_arithmetic := it.op in [token.Kind.plus, .minus, .mul, .div, .mod, .right_shift, .left_shift,
|
||||
.amp, .pipe, .xor]
|
||||
|
||||
if is_arithmetic && ((l_sym.kind == .i64 || l_sym.kind == .u64)
|
||||
if !g.pref.output_es5 && is_arithmetic && ((l_sym.kind == .i64 || l_sym.kind == .u64)
|
||||
|| (r_sym.kind == .i64 || r_sym.kind == .u64)) {
|
||||
// if left or right is i64 or u64 we convert them to bigint to perform operation.
|
||||
greater_typ := if l_sym.kind == .i64 || l_sym.kind == .u64 {
|
||||
|
|
@ -3043,25 +3089,24 @@ fn (mut g JsGen) gen_map_init_expr(it ast.MapInit) {
|
|||
g.writeln('new map(')
|
||||
g.inc_indent()
|
||||
if it.vals.len > 0 {
|
||||
g.writeln('new Map([')
|
||||
g.writeln('{')
|
||||
g.inc_indent()
|
||||
for i, key in it.keys {
|
||||
val := it.vals[i]
|
||||
g.write('[')
|
||||
g.expr(key)
|
||||
g.write('.\$toJS()')
|
||||
g.write(', ')
|
||||
g.write('.\$toJS()]')
|
||||
g.write(': ')
|
||||
g.expr(val)
|
||||
g.write(']')
|
||||
if i < it.keys.len - 1 {
|
||||
g.write(',')
|
||||
}
|
||||
g.writeln('')
|
||||
}
|
||||
g.dec_indent()
|
||||
g.write('])')
|
||||
g.write('}')
|
||||
} else {
|
||||
g.write('new Map()')
|
||||
g.write('{}')
|
||||
}
|
||||
g.dec_indent()
|
||||
g.write(')')
|
||||
|
|
@ -3275,7 +3320,7 @@ fn (mut g JsGen) gen_typeof_expr(it ast.TypeOf) {
|
|||
fn (mut g JsGen) gen_cast_tmp(tmp string, typ_ ast.Type) {
|
||||
// Skip cast if type is the same as the parrent caster
|
||||
tsym := g.table.get_final_type_symbol(typ_)
|
||||
if tsym.kind == .i64 || tsym.kind == .u64 {
|
||||
if !g.pref.output_es5 && (tsym.kind == .i64 || tsym.kind == .u64) {
|
||||
g.write('new ')
|
||||
|
||||
g.write('$tsym.kind.str()')
|
||||
|
|
@ -3346,7 +3391,8 @@ fn (mut g JsGen) gen_type_cast_expr(it ast.CastExpr) {
|
|||
g.expr(it.expr)
|
||||
return
|
||||
}
|
||||
if it.expr is ast.IntegerLiteral && (tsym.kind == .i64 || tsym.kind == .u64) {
|
||||
if !g.pref.output_es5 && it.expr is ast.IntegerLiteral
|
||||
&& (tsym.kind == .i64 || tsym.kind == .u64) {
|
||||
g.write('new ')
|
||||
|
||||
g.write('$tsym.kind.str()')
|
||||
|
|
|
|||
|
|
@ -25,7 +25,7 @@ function vEq(a, b) {
|
|||
return true;
|
||||
}
|
||||
|
||||
|
||||
if (typeof Map != 'undefined') {
|
||||
if ((a instanceof Map) && (b instanceof Map)) {
|
||||
if (a.size !== b.size) return false;
|
||||
for (i of a.entries())
|
||||
|
|
@ -41,7 +41,8 @@ function vEq(a, b) {
|
|||
if (!b.has(i[0])) return false;
|
||||
return true;
|
||||
}
|
||||
|
||||
}
|
||||
if (typeof ArrayBuffer != 'undefined') {
|
||||
if (ArrayBuffer.isView(a) && ArrayBuffer.isView(b)) {
|
||||
length = a.length;
|
||||
if (length != b.length) return false;
|
||||
|
|
@ -49,9 +50,11 @@ function vEq(a, b) {
|
|||
if (a[i] !== b[i]) return false;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
if (typeof RegExp != 'undefined') {
|
||||
if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags;
|
||||
}
|
||||
if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf();
|
||||
if (a.toString !== Object.prototype.toString) return a.toString() === b.toString();
|
||||
|
||||
|
|
|
|||
|
|
@ -154,6 +154,7 @@ pub mut:
|
|||
custom_prelude string // Contents of custom V prelude that will be prepended before code in resulting .c files
|
||||
lookup_path []string
|
||||
output_cross_c bool // true, when the user passed `-os cross`
|
||||
output_es5 bool
|
||||
prealloc bool
|
||||
vroot string
|
||||
out_name_c string // full os.real_path to the generated .tmp.c file; set by builder.
|
||||
|
|
@ -580,6 +581,9 @@ pub fn parse_args_and_show_errors(known_external_commands []string, args []strin
|
|||
res.backend = b
|
||||
i++
|
||||
}
|
||||
'-es5' {
|
||||
res.output_es5 = true
|
||||
}
|
||||
'-path' {
|
||||
path := cmdline.option(current_args, '-path', '')
|
||||
res.build_options << '$arg "$path"'
|
||||
|
|
|
|||
Loading…
Reference in New Issue