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higher level parsers can return null, but their return is ignored anycase.
div-by-0 is defined to be 0, backported to ch2,3,4,5
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Add an exact 'matchx' for keywords. Add a list of keywords.
int true=0; return true; // Expected id, found 'true'
int else=arg; if(else) else=2; else else=1; return else; // Expected id, found 'else'
inta=1; return a; // undefined inta
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Add true/false
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Return returns a tuple of control & result
GraphViz works with multi-Scopes and Scopes do not double-print uid.
Proj also does not print uid in golden test results, because every time we add a new early node, the final results change node id so fail golden test.
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Fix GraphVix node edge ordering
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Rename CTRL_TOKEN... its not a token.
_allScopes becomes a Stack, because... it behaves like a stack.
Add a junk Phi peep.
More general AddNode peeps
Add a bunch of If tests.
Rewrite how expected-exception tests work; the workflow on the old technique sucked. New one stops in the right place in the debugger.
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Fix test cases broken due to renaming of ProjNode label.
Cleanup the way we update $ctrl token
Assign an ID to each ScopeNode so that when we visualize we can assign different names
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Drop Control interface, not flexible enough. Use isCFG() call, overloaded in child classes. Projections have a more complex test.
Missing some printouts in Bool children, If, Region, Phi.
IfNode type is a tuple. Region is TypeControl.
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No type compute yet
Initial parsing logic for If statements
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