#44 String concatenation is not intuitive (project WebDSL on YellowGrass.org)

Actual behavior:

Write the following code: “main(“User:” output(u.fullname) “:”)”

Follow the suggestion from the eclipse plugin “expecting >”

Write the following code: “main(“User:” > output(u.fullname) > “:”)”

Building results in:

[ Main | info ] stage 2: importing modulesException in thread “main” org.strategoxt.lang.StrategoException: Exception in execution of primitive ‘STRSGLR_anno_location’

Expected behavior:

I expect to be directed to the “string concatenation operator” instead, rather than a random operator that results in weird exceptions.

Submitted by Sverre Rabbelier on 26 February 2010 at 13:46

error!lennartkats

On 26 February 2010 at 14:19 Lennart Kats commented:

Could you add a copy of the stack trace you get when you do this? And a minimal copy of the file that caused this could also help us reproduce this problem.

On 26 February 2010 at 14:26 Zef Hemel commented:

Do note, however, that there’s no string concatenation available to do this. output is not a function that returns a string, it is a template. What you can do instead is: main("User: " + u.fullname + ": ")

On 26 February 2010 at 14:28 Sverre Rabbelier commented:

Ah, in that case please do update the documentation of the String class to reflect that. (And we did figure out that ‘output’ is not the appropriate here, but I thought it might be relevant for the bug report).

Will post full stack trace later.

On 26 February 2010 at 14:42 Tim commented:

Full stack:

    [echo] Classpath: D:/Program Files/eclipse/plugins/webdsl.editor_1.0.0.201002091647//include/webdsl.jar
    [java] [ Main | info ] stage 1: parsing Gamestile.app : [user/system] = [2,47s/0,00s]
    [java] [ Main | info ] stage 2: importing modulesException in thread "main" org.strategoxt.lang.StrategoException: Exception in execution of primitive 'STRSGLR_anno_location'
    [java] 	at org.strategoxt.lang.Context.invokePrimitive(Context.java:209)
    [java] 	at org.strategoxt.lang.Context.invokePrimitive(Context.java:190)
    [java] 	at org.strategoxt.lang.compat.override.jsglr_parser_compat.asfix_anno_location_0_0_override.invoke(asfix_anno_location_0_0_override.java:22)
    [java] 	at org.webdsl.webdsl_front.implode_with_location_annos_0_1.invoke(implode_with_location_annos_0_1.java:27)
    [java] 	at org.webdsl.webdsl_front.parse_and_write_cache_0_3.invoke(parse_and_write_cache_0_3.java:73)
    [java] 	at org.webdsl.webdsl_front.xtc_parse_webdsl_unit_0_1.invoke(xtc_parse_webdsl_unit_0_1.java:160)
    [java] 	at org.webdsl.webdsl_front.xtc_parse_webdsl_module_0_0.invoke(xtc_parse_webdsl_module_0_0.java:36)
    [java] 	at org.webdsl.webdsl_generator.import_module_0_0.invoke(import_module_0_0.java:62)
    [java] 	at org.webdsl.webdsl_generator.lifted1940.invoke(lifted1940.java:37)
    [java] 	at org.strategoxt.stratego_lib.try_1_0.invoke(try_1_0.java:26)
    [java] 	at org.webdsl.webdsl_generator.lifted1939.invoke(lifted1939.java:26)
    [java] 	at org.strategoxt.stratego_lib.topdown_1_0.invoke(topdown_1_0.java:21)
    [java] 	at org.strategoxt.stratego_lib.lifted900.invoke(lifted900.java:20)
    [java] 	at org.strategoxt.lang.SRTS_all.mapIgnoreAnnos(SRTS_all.java:86)
    [java] 	at org.strategoxt.lang.SRTS_all.mapMaintainAnnos(SRTS_all.java:105)
    [java] 	at org.strategoxt.lang.SRTS_all.map(SRTS_all.java:66)
    [java] 	at org.strategoxt.lang.SRTS_all.invoke(SRTS_all.java:21)
    [java] 	at org.strategoxt.stratego_lib.topdown_1_0.invoke(topdown_1_0.java:26)
    [java] 	at org.strategoxt.stratego_lib.lifted900.invoke(lifted900.java:20)
    [java] 	at org.strategoxt.lang.SRTS_all.invoke(SRTS_all.java:28)
    [java] 	at org.strategoxt.stratego_lib.topdown_1_0.invoke(topdown_1_0.java:26)
    [java] 	at org.strategoxt.stratego_lib.lifted900.invoke(lifted900.java:20)
    [java] 	at org.strategoxt.lang.SRTS_all.map(SRTS_all.java:60)
    [java] 	at org.strategoxt.lang.SRTS_all.invoke(SRTS_all.java:21)
    [java] 	at org.strategoxt.stratego_lib.topdown_1_0.invoke(topdown_1_0.java:26)
    [java] 	at org.strategoxt.stratego_lib.lifted900.invoke(lifted900.java:20)
    [java] 	at org.strategoxt.lang.SRTS_all.invoke(SRTS_all.java:28)
    [java] 	at org.strategoxt.stratego_lib.topdown_1_0.invoke(topdown_1_0.java:26)
    [java] 	at org.webdsl.webdsl_generator.import_modules_0_0.invoke(import_modules_0_0.java:43)
    [java] 	at org.webdsl.webdsl_generator.lifted1918.invoke(lifted1918.java:31)
    [java] 	at org.webdsl.webdsl_front.log_timed_1_1.invoke(log_timed_1_1.java:48)
    [java] 	at org.webdsl.webdsl_front.stage_1_1.invoke(stage_1_1.java:74)
    [java] 	at org.webdsl.webdsl_generator.dsl_to_core_analysis_0_0.invoke(dsl_to_core_analysis_0_0.java:32)
    [java] 	at org.webdsl.webdsl_generator.dsl_to_core_0_0.invoke(dsl_to_core_0_0.java:27)
    [java] 	at org.webdsl.webdslc.xtc_webdslc_0_0.invoke(xtc_webdslc_0_0.java:75)
    [java] 	at org.webdsl.webdslc.lifted16.invoke(lifted16.java:31)
    [java] 	at org.strategoxt.stratego_xtc.lifted87.invoke(lifted87.java:38)
    [java] 	at org.strategoxt.stratego_lib.restore_always_2_0.invoke(restore_always_2_0.java:26)
    [java] 	at org.strategoxt.stratego_xtc.xtc_temp_files_1_0.invoke(xtc_temp_files_1_0.java:28)
    [java] 	at org.strategoxt.stratego_xtc.xtc_io_1_0.invoke(xtc_io_1_0.java:22)
    [java] 	at org.strategoxt.stratego_xtc.lifted134.invoke(lifted134.java:22)
    [java] 	at org.strategoxt.stratego_lib.option_wrap_5_0.invoke(option_wrap_5_0.java:32)
    [java] 	at org.strategoxt.stratego_xtc.xtc_io_wrap_5_0.invoke(xtc_io_wrap_5_0.java:25)
    [java] 	at org.webdsl.webdslc.webdslc_main_0_0.invoke(webdslc_main_0_0.java:32)
    [java] 	at org.strategoxt.lang.Context.invokeStrategyCLI(Context.java:158)
    [java] 	at org.webdsl.webdslc.Main.main(Main.java:113)
    [java] Caused by: java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to [Lorg.spoofax.interpreter.terms.IStrategoTerm;
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:188)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:152)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverseArgs(STRSGLR_anno_location.java:153)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location$AsfixAnnoLocation.traverse(STRSGLR_anno_location.java:173)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location.annoLocation(STRSGLR_anno_location.java:49)
    [java] 	at org.strategoxt.lang.compat.sglr.STRSGLR_anno_location.call(STRSGLR_anno_location.java:42)
    [java] 	at org.strategoxt.lang.Context.invokePrimitive(Context.java:199)
    [java] 	... 45 more
    [java] Fatal error at
    [java] 	webdslc_main_0_0
    [java] 	xtc_io_wrap_5_0
    [java] 	option_wrap_5_0
    [java] 	xtc_io_1_0
    [java] 	xtc_temp_files_1_0
    [java] 	restore_always_2_0
    [java] 	xtc_webdslc_0_0
    [java] 	dsl_to_core_0_0
    [java] 	dsl_to_core_analysis_0_0
    [java] 	stage_1_1
    [java] 	log_timed_1_1
    [java] 	import_modules_0_0
    [java] 	topdown_1_0
    [java] 	topdown_1_0
    [java] 	topdown_1_0
    [java] 	topdown_1_0
    [java] 	topdown_1_0
    [java] 	try_1_0
    [java] 	import_module_0_0
    [java] 	xtc_parse_webdsl_module_0_0
    [java] 	xtc_parse_webdsl_unit_0_1
    [java] 	parse_and_write_cache_0_3
    [java] 	implode_with_location_annos_0_1

BUILD FAILED
C:_tim\Workspaces\Studie\IN4308__\Gamestile\build.xml:9: The following error occurred while executing this line:
D:\Program Files\eclipse\plugins\webdsl.editor_1.0.0.201002091647\webdsl-template\webdsl-build-eclipse.xml:4: The following error occurred while executing this line:
D:\Program Files\eclipse\plugins\webdsl.editor_1.0.0.201002091647\webdsl-template\webdsl-build.xml:486: The following error occurred while executing this line:
D:\Program Files\eclipse\plugins\webdsl.editor_1.0.0.201002091647\webdsl-template\webdsl-build.xml:466: The following error occurred while executing this line:
D:\Program Files\eclipse\plugins\webdsl.editor_1.0.0.201002091647\webdsl-template\webdsl-build.xml:333: Java returned: 1

Total time: 14 seconds

On 26 February 2010 at 14:44 Tim commented:

define page viewUser(u : User){
main( “User:” > u.fullname > “: " ){
table {
row{ “Name:” output(u.fullname)}
row{ “Nickname:” output(u.username) }
row{ “Date of Birth:” output(u.dateOfBirth) }
}
navigate(editUser(u)){”[Edit]"}
}
}

define main(title: String) {
// …
}

On 26 February 2010 at 15:01 Lennart Kats commented:

@Tim: thanks for the stack trace. I fixed the bug in STRSGLR_anno_location (which should never fail like this).

The underlying cause for this failure seems to be an ambiguity in the WebDSL grammar though.

On 29 October 2013 at 17:55 Danny Groenewegen commented:

old issue

On 29 October 2013 at 17:55 Danny Groenewegen closed this issue.

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String concatenation is not intuitive (1)

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