Skip to content

JS: Parse arbitary module specifiers #17166

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 3 commits into from
Aug 8, 2024
Merged

JS: Parse arbitary module specifiers #17166

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
5f7f37f
support arbitary import specifiers
erik-krogh Aug 6, 2024
b8187ed
support arbitary export specifiers
erik-krogh Aug 6, 2024
bef4fe6
make sure the new identifiers have end-locations
erik-krogh Aug 7, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
31 changes: 29 additions & 2 deletions javascript/extractor/src/com/semmle/jcorn/Parser.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3547,7 +3547,19 @@ protected List<ExportSpecifier> parseExportSpecifiers(Set<String> exports) {

SourceLocation loc = new SourceLocation(this.startLoc);
Identifier local = this.parseIdent(this.type == TokenType._default);
Identifier exported = this.eatContextual("as") ? this.parseIdent(true) : local;
Identifier exported;
if (!this.eatContextual("as")) {
exported = local;
} else {
if (this.type == TokenType.string) {
// e.g. `export { Foo_new as "Foo::new" }`
Expression string = this.parseExprAtom(null);
String str = ((Literal)string).getStringValue();
exported = this.finishNode(new Identifier(loc, str));
} else {
exported = this.parseIdent(true);
}
}
checkExport(exports, exported.getName(), exported.getLoc().getStart());
nodes.add(this.finishNode(new ExportSpecifier(loc, local, exported)));
}
Expand Down Expand Up @@ -3629,7 +3641,22 @@ protected List<ImportSpecifier> parseImportSpecifiers() {

protected ImportSpecifier parseImportSpecifier() {
SourceLocation loc = new SourceLocation(this.startLoc);
Identifier imported = this.parseIdent(true), local;
Identifier imported, local;

if (this.type == TokenType.string) {
// Arbitrary Module Namespace Identifiers
// e.g. `import { "Foo::new" as Foo_new } from "./foo.wasm"`
Expression string = this.parseExprAtom(null);
String str = ((Literal)string).getStringValue();
imported = this.finishNode(new Identifier(loc, str));
// only makes sense if there is a local identifier
if (!this.isContextual("as")) {
this.raiseRecoverable(this.start, "Unexpected string");
}
} else {
imported = this.parseIdent(true);
}

if (this.eatContextual("as")) {
local = this.parseIdent(false);
} else {
Expand Down
1 change: 1 addition & 0 deletions javascript/extractor/tests/flow/input/arbitaryModuleSpecifier.js
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
import { "foo" } from "foo"; // syntax-error, but it shouldn't crash the extractor
143 changes: 143 additions & 0 deletions javascript/extractor/tests/flow/output/trap/arbitaryModuleSpecifier.js.trap
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,143 @@
#10000=@"/arbitaryModuleSpecifier.js;sourcefile"
files(#10000,"/arbitaryModuleSpecifier.js")
#10001=@"/;folder"
folders(#10001,"/")
containerparent(#10001,#10000)
#10002=@"loc,{#10000},0,0,0,0"
locations_default(#10002,#10000,0,0,0,0)
hasLocation(#10000,#10002)
#20000=@"global_scope"
scopes(#20000,0)
#20001=@"script;{#10000},1,1"
#20002=*
comments(#20002,0,#20001," syntax-error, but it shouldn't crash the extractor","// synt ... tractor")
#20003=@"loc,{#10000},1,30,1,82"
locations_default(#20003,#10000,1,30,1,82)
hasLocation(#20002,#20003)
#20004=*
lines(#20004,#20001,"import { ""foo"" } from ""foo""; // syntax-error, but it shouldn't crash the extractor","
")
#20005=@"loc,{#10000},1,1,1,82"
locations_default(#20005,#10000,1,1,1,82)
hasLocation(#20004,#20005)
numlines(#20001,1,1,1)
#20006=*
tokeninfo(#20006,7,#20001,0,"import")
#20007=@"loc,{#10000},1,1,1,6"
locations_default(#20007,#10000,1,1,1,6)
hasLocation(#20006,#20007)
#20008=*
tokeninfo(#20008,8,#20001,1,"{")
#20009=@"loc,{#10000},1,8,1,8"
locations_default(#20009,#10000,1,8,1,8)
hasLocation(#20008,#20009)
#20010=*
tokeninfo(#20010,4,#20001,2,"""foo""")
#20011=@"loc,{#10000},1,10,1,14"
locations_default(#20011,#10000,1,10,1,14)
hasLocation(#20010,#20011)
#20012=*
tokeninfo(#20012,8,#20001,3,"}")
#20013=@"loc,{#10000},1,16,1,16"
locations_default(#20013,#10000,1,16,1,16)
hasLocation(#20012,#20013)
#20014=*
tokeninfo(#20014,6,#20001,4,"from")
#20015=@"loc,{#10000},1,18,1,21"
locations_default(#20015,#10000,1,18,1,21)
hasLocation(#20014,#20015)
#20016=*
tokeninfo(#20016,4,#20001,5,"""foo""")
#20017=@"loc,{#10000},1,23,1,27"
locations_default(#20017,#10000,1,23,1,27)
hasLocation(#20016,#20017)
#20018=*
tokeninfo(#20018,8,#20001,6,";")
#20019=@"loc,{#10000},1,28,1,28"
locations_default(#20019,#10000,1,28,1,28)
hasLocation(#20018,#20019)
#20020=*
tokeninfo(#20020,0,#20001,7,"")
#20021=@"loc,{#10000},2,1,2,0"
locations_default(#20021,#10000,2,1,2,0)
hasLocation(#20020,#20021)
next_token(#20002,#20020)
toplevels(#20001,0)
#20022=@"loc,{#10000},1,1,2,0"
locations_default(#20022,#10000,1,1,2,0)
hasLocation(#20001,#20022)
#20023=@"module;{#10000},1,1"
scopes(#20023,3)
scopenodes(#20001,#20023)
scopenesting(#20023,#20000)
is_module(#20001)
is_es2015_module(#20001)
#20024=@"var;{foo};{#20023}"
variables(#20024,"foo",#20023)
#20025=@"local_type_name;{foo};{#20023}"
local_type_names(#20025,"foo",#20023)
#20026=@"local_namespace_name;{foo};{#20023}"
local_namespace_names(#20026,"foo",#20023)
variables(#20024,"foo",#20023)
local_type_names(#20025,"foo",#20023)
local_namespace_names(#20026,"foo",#20023)
#20027=*
stmts(#20027,27,#20001,0,"import ... ""foo"";")
#20028=@"loc,{#10000},1,1,1,28"
locations_default(#20028,#10000,1,1,1,28)
hasLocation(#20027,#20028)
stmt_containers(#20027,#20001)
#20029=*
exprs(#20029,4,#20027,-1,"""foo""")
hasLocation(#20029,#20017)
enclosing_stmt(#20029,#20027)
expr_containers(#20029,#20001)
literals("foo","""foo""",#20029)
#20030=*
regexpterm(#20030,14,#20029,0,"foo")
#20031=@"loc,{#10000},1,24,1,26"
locations_default(#20031,#10000,1,24,1,26)
hasLocation(#20030,#20031)
regexp_const_value(#20030,"foo")
#20032=*
exprs(#20032,83,#20027,0,"""foo""")
hasLocation(#20032,#20011)
enclosing_stmt(#20032,#20027)
expr_containers(#20032,#20001)
#20033=*
exprs(#20033,0,#20032,0,"""foo""")
hasLocation(#20033,#20011)
enclosing_stmt(#20033,#20027)
expr_containers(#20033,#20001)
literals("foo","foo",#20033)
#20034=*
exprs(#20034,78,#20032,1,"""foo""")
hasLocation(#20034,#20011)
enclosing_stmt(#20034,#20027)
expr_containers(#20034,#20001)
literals("foo","foo",#20034)
decl(#20034,#20024)
typedecl(#20034,#20025)
namespacedecl(#20034,#20026)
#20035=*
entry_cfg_node(#20035,#20001)
#20036=@"loc,{#10000},1,1,1,0"
locations_default(#20036,#10000,1,1,1,0)
hasLocation(#20035,#20036)
#20037=*
exit_cfg_node(#20037,#20001)
hasLocation(#20037,#20021)
successor(#20027,#20037)
successor(#20032,#20027)
successor(#20035,#20032)
#20038=*
js_parse_errors(#20038,#20001,"Error: Unexpected string","import { ""foo"" } from ""foo""; // syntax-error, but it shouldn't crash the extractor
")
hasLocation(#20038,#20013)
#20039=*
lines(#20039,#20001,"import { ""foo"" } from ""foo""; // syntax-error, but it shouldn't crash the extractor","
")
hasLocation(#20039,#20005)
numlines(#20001,1,0,0)
numlines(#10000,1,1,1)
filetype(#10000,"javascript")
5 changes: 5 additions & 0 deletions javascript/ql/test/library-tests/Modules/arbitarySpecifier.js
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
import { "Foo::new" as Foo_new } from "./foo.wasm"

const foo = Foo_new()

export { Foo_new as "Foo::new" }
10 changes: 10 additions & 0 deletions javascript/ql/test/library-tests/Modules/tests.expected
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ test_BulkReExportDeclarations
test_ExportDeclarations
| a.js:1:1:3:1 | export ... n 23;\\n} |
| a.js:5:1:5:32 | export ... } = o; |
| arbitarySpecifier.js:5:1:5:32 | export ... :new" } |
| b.js:5:1:5:18 | export { f as g }; |
| b.js:7:1:7:21 | export ... './a'; |
| d.js:4:1:4:20 | export * from 'm/c'; |
Expand All @@ -18,6 +19,7 @@ test_ExportDefaultDeclarations
| a.js:1:1:3:1 | export ... n 23;\\n} |
| es2015_require.js:3:1:3:25 | export ... ss C {} |
test_ExportSpecifiers
| arbitarySpecifier.js:5:10:5:30 | Foo_new ... o::new" | arbitarySpecifier.js:5:10:5:16 | Foo_new | arbitarySpecifier.js:5:10:5:30 | Foo_new ... o::new" |
| b.js:5:10:5:15 | f as g | b.js:5:10:5:10 | f | b.js:5:15:5:15 | g |
| e.js:2:10:2:10 | x | e.js:2:10:2:10 | x | e.js:2:10:2:10 | x |
| e.js:2:13:2:13 | y | e.js:2:13:2:13 | y | e.js:2:13:2:13 | y |
Expand All @@ -41,6 +43,7 @@ test_ImportNamespaceSpecifier
| exports.js:1:8:1:17 | * as dummy |
| m/c.js:1:8:1:13 | * as b |
test_ImportSpecifiers
| arbitarySpecifier.js:1:10:1:30 | "Foo::n ... Foo_new | arbitarySpecifier.js:1:24:1:30 | Foo_new |
| b.js:1:8:1:8 | f | b.js:1:8:1:8 | f |
| d.js:1:10:1:21 | default as g | d.js:1:21:1:21 | g |
| d.js:1:24:1:29 | x as y | d.js:1:29:1:29 | y |
Expand All @@ -55,6 +58,7 @@ test_ImportSpecifiers
| tst.html:5:10:5:10 | f | tst.html:5:10:5:10 | f |
| unresolved.js:1:8:1:8 | f | unresolved.js:1:8:1:8 | f |
test_Imports
| arbitarySpecifier.js:1:1:1:50 | import ... o.wasm" | arbitarySpecifier.js:1:39:1:50 | "./foo.wasm" | 1 |
| b.js:1:1:1:20 | import f from './a'; | b.js:1:15:1:19 | './a' | 1 |
| d.js:1:1:1:43 | import ... './a'; | d.js:1:38:1:42 | './a' | 2 |
| d.js:2:1:2:13 | import './b'; | d.js:2:8:2:12 | './b' | 0 |
Expand All @@ -72,6 +76,7 @@ test_Module_exports
| a.js:1:1:5:32 | <toplevel> | default | a.js:1:16:3:1 | functio ... n 23;\\n} |
| a.js:1:1:5:32 | <toplevel> | x | a.js:5:18:5:20 | f() |
| a.js:1:1:5:32 | <toplevel> | y | a.js:5:25:5:25 | y |
| arbitarySpecifier.js:1:1:5:32 | <toplevel> | Foo::new | arbitarySpecifier.js:5:10:5:16 | Foo_new |
| b.js:1:1:8:0 | <toplevel> | f2 | a.js:1:16:3:1 | functio ... n 23;\\n} |
| b.js:1:1:8:0 | <toplevel> | g | b.js:5:10:5:10 | f |
| e.js:1:1:4:0 | <toplevel> | g | a.js:1:16:3:1 | functio ... n 23;\\n} |
Expand All @@ -84,6 +89,7 @@ test_Module_exports
| reExportNamespace.js:1:1:2:0 | <toplevel> | ns | reExportNamespace.js:1:8:1:14 | * as ns |
| tst.html:4:23:8:0 | <toplevel> | y | tst.html:7:20:7:21 | 42 |
test_NamedImportSpecifier
| arbitarySpecifier.js:1:10:1:30 | "Foo::n ... Foo_new |
| d.js:1:10:1:21 | default as g |
| d.js:1:24:1:29 | x as y |
| g.ts:1:9:1:11 | foo |
Expand Down Expand Up @@ -111,6 +117,7 @@ test_getAnImportedModule
| library-tests/Modules/m/c.js | library-tests/Modules/b.js |
| library-tests/Modules/reExportNamespaceClient.js | library-tests/Modules/reExportNamespace.js |
test_getExportedName
| arbitarySpecifier.js:5:10:5:30 | Foo_new ... o::new" | Foo::new |
| b.js:5:10:5:15 | f as g | g |
| b.js:7:8:7:9 | f2 | f2 |
| e.js:2:10:2:10 | x | x |
Expand All @@ -119,6 +126,7 @@ test_getExportedName
| m/c.js:5:10:5:15 | g as h | h |
| reExportNamespace.js:1:8:1:14 | * as ns | ns |
test_getImportedName
| arbitarySpecifier.js:1:10:1:30 | "Foo::n ... Foo_new | Foo::new |
| b.js:1:8:1:8 | f | default |
| d.js:1:10:1:21 | default as g | default |
| d.js:1:24:1:29 | x as y | x |
Expand All @@ -131,6 +139,7 @@ test_getImportedName
| tst.html:5:10:5:10 | f | default |
| unresolved.js:1:8:1:8 | f | default |
test_getLocalName
| arbitarySpecifier.js:5:10:5:30 | Foo_new ... o::new" | Foo_new |
| b.js:5:10:5:15 | f as g | f |
| b.js:7:8:7:9 | f2 | default |
| e.js:2:10:2:10 | x | x |
Expand All @@ -141,6 +150,7 @@ test_getSourceNode
| a.js:1:1:3:1 | export ... n 23;\\n} | default | a.js:1:16:3:1 | functio ... n 23;\\n} |
| a.js:5:1:5:32 | export ... } = o; | x | a.js:5:18:5:20 | f() |
| a.js:5:1:5:32 | export ... } = o; | y | a.js:5:25:5:25 | y |
| arbitarySpecifier.js:5:1:5:32 | export ... :new" } | Foo::new | arbitarySpecifier.js:5:10:5:16 | Foo_new |
| b.js:5:1:5:18 | export { f as g }; | g | b.js:5:10:5:10 | f |
| b.js:7:1:7:21 | export ... './a'; | f2 | a.js:1:16:3:1 | functio ... n 23;\\n} |
| e.js:2:1:2:16 | export { x, y }; | x | e.js:2:10:2:10 | x |
Expand Down
Loading