[GAIA Compiler] Refine error handling in antlr grammar #2530
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What do these changes do?
g.Vd
-> syntax error occurs at [line: 1, column: 3]; msg is: [token recognition error at: 'd']g.V().order().by('a', 'b')
-> syntax error occurs at [line: 1, column: 22]; msg is: [mismatched input '"b"' expecting {'asc', 'Order.asc', 'desc', 'Order.desc', 'shuffle', 'Order.shuffle'}]g.V().subgraph('X')
-> edge induced subgraph should follow an edge expand operator [inE, outE, bothE]g.V().endV()
-> endV should follow a path expand operator [out('$1..$2'), in('$1..$2'), both('$1..$2')]hasId
which should be a non-empty integer listRelated issue number
Related Issue: #2531