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Update binaryen.js and enable tee optimizations

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This commit is contained in:
dcodeIO
2017-12-29 04:38:39 +01:00
parent 4207f6460d
commit c67f87a988
15 changed files with 246 additions and 329 deletions
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100
src/ast.ts
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@ -1028,7 +1028,7 @@ export class StringLiteralExpression extends LiteralExpression {
value: string;
serialize(sb: string[]): void {
sb.push(escapeString(this.value));
sb.push(stringToLiteral(this.value));
}
}
@ -2181,19 +2181,93 @@ function builderEndsWith(sb: string[], code: CharCode): bool {
return false;
}
/** Escapes a string to a string literal. */
export function escapeString(str: string): string {
var k = str.length;
var ret = new Array<string>(k);
for (var i = 0, c: string; i < k; ++i) {
switch (c = str.charAt(i)) {
case "\\": ret[i] = "\\\\"; break;
case "\"": ret[i] = "\\\""; break;
case "\r": ret[i] = "\\r"; break;
case "\n": ret[i] = "\\n"; break;
case "\0": ret[i] = "\\0"; break;
default: ret[i] = c;
/** Converts a string to its literal representation including quotes. */
export function stringToLiteral(str: string): string {
var ret = new Array<string>();
var off = 0;
for (var i = 0, k = str.length; i < k;) {
switch (str.charCodeAt(i)) {
case CharCode.NULL:
if (i > off)
ret.push(str.substring(off, off = i + 1));
ret.push("\\0");
off = ++i;
break;
case CharCode.BACKSPACE:
if (i > off)
ret.push(str.substring(off, i));
off = ++i;
ret.push("\\b");
break;
case CharCode.TAB:
if (i > off)
ret.push(str.substring(off, i));
off = ++i;
ret.push("\\t");
break;
case CharCode.LINEFEED:
if (i > off)
ret.push(str.substring(off, i));
off = ++i;
ret.push("\\n");
break;
case CharCode.VERTICALTAB:
if (i > off)
ret.push(str.substring(off, i));
off = ++i;
ret.push("\\v");
break;
case CharCode.FORMFEED:
if (i > off)
ret.push(str.substring(off, i));
off = ++i;
ret.push("\\f");
break;
case CharCode.CARRIAGERETURN:
if (i > off)
ret.push(str.substring(off, i));
ret.push("\\r");
off = ++i;
break;
case CharCode.DOUBLEQUOTE:
if (i > off)
ret.push(str.substring(off, i));
ret.push("\\\"");
off = ++i;
break;
case CharCode.SINGLEQUOTE:
if (i > off)
ret.push(str.substring(off, i));
ret.push("\\'");
off = ++i;
break;
case CharCode.BACKSLASH:
if (i > off)
ret.push(str.substring(off, i));
ret.push("\\\\");
off = ++i;
break;
default:
++i;
break;
}
}
if (off == 0) {
assert(ret.length == 0);
return "\"" + str + "\"";
}
if (i > off)
ret.push(str.substring(off, i));
return "\"" + ret.join("") + "\"";
}