| Large grammar - "heap space" error - but ends by 'done' [message #1769454] |
Mon, 31 July 2017 14:58  |
Eclipse User |
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Hi XText users and gurus,
I have defined a grammar that is pretty large: about 1500 lines. In complexity it can be regarded as something of the magnitude of Java 7.
When generating the artifacts, it ends by 'done' as the process were succeeding; but just before the end, this error occurs:
error(10): internal error: Can't get property javaCompressedTransition using method get/isJavaCompressedTransition from org.antlr.analysis.DFA instance : java.lang.OutOfMemoryError: Java heap space
java.util.ArrayList.<init>(ArrayList.java:152)
org.antlr.analysis.DFA.getRunLengthEncoding(DFA.java:357)
org.antlr.analysis.DFA.getJavaCompressedTransition(DFA.java:333)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:498)
org.antlr.stringtemplate.language.ASTExpr.invokeMethod(ASTExpr.java:564)
org.antlr.stringtemplate.language.ASTExpr.rawGetObjectProperty(ASTExpr.java:515)
org.antlr.stringtemplate.language.ASTExpr.getObjectProperty(ASTExpr.java:417)
org.antlr.stringtemplate.language.ActionEvaluator.attribute(ActionEvaluator.java:351)
org.antlr.stringtemplate.language.ActionEvaluator.expr(ActionEvaluator.java:136)
org.antlr.stringtemplate.language.ActionEvaluator.templateApplication(ActionEvaluator.java:216)
org.antlr.stringtemplate.language.ActionEvaluator.expr(ActionEvaluator.java:126)
org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:84)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:149)
org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:705)
org.antlr.stringtemplate.language.ASTExpr.writeTemplate(ASTExpr.java:750)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:680)
org.antlr.stringtemplate.language.ASTExpr.writeIterableValue(ASTExpr.java:772)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:682)
org.antlr.stringtemplate.language.ASTExpr.writeAttribute(ASTExpr.java:660)
org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:86)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:149)
org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:705)
org.antlr.stringtemplate.language.ASTExpr.writeTemplate(ASTExpr.java:750)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:680)
org.antlr.stringtemplate.language.ASTExpr.writeAttribute(ASTExpr.java:660)
org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:86)
org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:149)
org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:705)
org.antlr.codegen.CodeGenerator.write(CodeGenerator.java:1281)
Is this a real error?
Any clues how to overcome this?
I've tried to instruct Eclipse to use about 2Gb of heap space (xms, xmx options), but even that did not help.
Thanks in advance!
PS: the error appears after adding a clause like:
... to a rule that is situated pretty high/early in the top-down derivation tree.
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