added support for ES2021 assignment operators

This commit is contained in:
Erik Krogh Kristensen 2020-09-17 12:42:37 +02:00
Родитель d867172d27
Коммит 87d4e13584
4 изменённых файлов: 659 добавлений и 6 удалений

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@ -531,9 +531,14 @@ public class Parser {
int next2 = charAt(this.pos + 2);
if (this.options.esnext()) {
if (next == '.' && !('0' <= next2 && next2 <= '9')) // '?.', but not '?.X' where X is a digit
return this.finishOp(TokenType.questiondot, 2);
if (next == '?') // '??'
return this.finishOp(TokenType.questionquestion, 2);
return this.finishOp(TokenType.questiondot, 2);
if (next == '?') { // '??'
if (next2 == '=') { // ??=
return this.finishOp(TokenType.assign, 3);
}
return this.finishOp(TokenType.questionquestion, 2);
}
}
return this.finishOp(TokenType.question, 1);
}
@ -566,8 +571,11 @@ public class Parser {
private Token readToken_pipe_amp(int code) { // '|&'
int next = charAt(this.pos + 1);
if (next == code)
int next2 = charAt(this.pos + 2);
if (next == code) { // && ||
if (next2 == 61) return this.finishOp(TokenType.assign, 3); // &&= ||=
return this.finishOp(code == 124 ? TokenType.logicalOR : TokenType.logicalAND, 2);
}
if (next == 61) return this.finishOp(TokenType.assign, 2);
return this.finishOp(code == 124 ? TokenType.bitwiseOR : TokenType.bitwiseAND, 1);
}
@ -709,8 +717,8 @@ public class Parser {
case 42: // '%*'
return this.readToken_mult_modulo_exp(code);
case 124:
case 38: // '|&'
case 124: // '|'
case 38: // '&'
return this.readToken_pipe_amp(code);
case 94: // '^'

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@ -0,0 +1,9 @@
var x = 1;
var y = 2;
var foo = x && y;
var bar = x &&= y;
console.log(x); // 2
x &&= y;
x ||= y;
x ??= y;

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@ -0,0 +1,3 @@
{
"experimental": true
}

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exprs(#20164,79,#20162,0,"x")
hasLocation(#20164,#20101)
enclosing_stmt(#20164,#20161)
expr_containers(#20164,#20001)
literals("x","x",#20164)
bind(#20164,#20111)
#20165=*
exprs(#20165,79,#20162,1,"y")
hasLocation(#20165,#20105)
enclosing_stmt(#20165,#20161)
expr_containers(#20165,#20001)
literals("y","y",#20165)
bind(#20165,#20112)
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entry_cfg_node(#20166,#20001)
#20167=@"loc,{#10000},1,1,1,0"
locations_default(#20167,#10000,1,1,1,0)
hasLocation(#20166,#20167)
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exit_cfg_node(#20168,#20001)
hasLocation(#20168,#20109)
successor(#20161,#20164)
successor(#20164,#20165)
successor(#20164,#20168)
successor(#20165,#20164)
successor(#20162,#20168)
successor(#20156,#20159)
#20169=*
guard_node(#20169,1,#20159)
hasLocation(#20169,#20093)
successor(#20169,#20161)
#20170=*
guard_node(#20170,0,#20159)
hasLocation(#20170,#20093)
successor(#20170,#20160)
successor(#20159,#20169)
successor(#20159,#20170)
successor(#20160,#20159)
successor(#20157,#20161)
successor(#20151,#20154)
#20171=*
guard_node(#20171,1,#20154)
hasLocation(#20171,#20085)
successor(#20171,#20155)
#20172=*
guard_node(#20172,0,#20154)
hasLocation(#20172,#20085)
successor(#20172,#20156)
successor(#20154,#20171)
successor(#20154,#20172)
successor(#20155,#20154)
successor(#20152,#20156)
successor(#20141,#20147)
successor(#20150,#20143)
successor(#20149,#20145)
successor(#20147,#20149)
successor(#20145,#20150)
successor(#20143,#20151)
successor(#20133,#20136)
#20173=*
guard_node(#20173,1,#20139)
hasLocation(#20173,#20063)
successor(#20173,#20140)
#20174=*
guard_node(#20174,0,#20139)
hasLocation(#20174,#20063)
successor(#20174,#20134)
successor(#20139,#20173)
successor(#20139,#20174)
successor(#20140,#20139)
successor(#20137,#20134)
successor(#20136,#20139)
successor(#20134,#20141)
successor(#20125,#20128)
successor(#20129,#20131)
#20175=*
guard_node(#20175,1,#20131)
hasLocation(#20175,#20049)
successor(#20175,#20132)
#20176=*
guard_node(#20176,0,#20131)
hasLocation(#20176,#20049)
successor(#20176,#20126)
successor(#20131,#20175)
successor(#20131,#20176)
successor(#20132,#20126)
successor(#20128,#20129)
successor(#20126,#20133)
successor(#20120,#20123)
successor(#20124,#20121)
successor(#20123,#20124)
successor(#20121,#20125)
successor(#20115,#20118)
successor(#20119,#20116)
successor(#20118,#20119)
successor(#20116,#20120)
successor(#20166,#20115)
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filetype(#10000,"javascript")