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ccc, cccx: the power operator ^, as in SSAS - #56
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Analysis Services reads ^ as the power operator; both grammars read it as an INVALID token. Both now have the token CARET and a power level between the sign and the operand: ^ binds more tightly than * / and a leading sign, groups from right to left, and its exponent may carry a sign (2 ^ 3 ^ 2 is 2 ^ (3 ^ 2), -2 ^ 2 is -(2 ^ 2), 2 ^ -1 is read). The parsed form is an infix call of ^, as * is; the unparser already wrote ^ back. Tests: parser.tck PowerOperatorTest (a power in a calculated member and in the slicer, grouping, precedence over * and /, the leading sign, a signed and a fractional exponent, NULL ^ 2); unparser.simple SimpleUnparserPowerTest writes the same models back. TCK green on ccc and cccx (218 tests), rolap green against this build. Signed-off-by: dbulahov <bulahovdenis@gmail.com>
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What does this PR do?
#55
ccc, cccx: the power operator ^, as in SSAS
Analysis Services reads ^ as the power operator; both grammars read it as
an INVALID token. Both now have the token CARET and a power level between
the sign and the operand: ^ binds more tightly than * / and a leading sign,
groups from right to left, and its exponent may carry a sign
(2 ^ 3 ^ 2 is 2 ^ (3 ^ 2), -2 ^ 2 is -(2 ^ 2), 2 ^ -1 is read). The parsed
form is an infix call of ^, as * is; the unparser already wrote ^ back.
Tests: parser.tck PowerOperatorTest (a power in a calculated member and in
the slicer, grouping, precedence over * and /, the leading sign, a signed
and a fractional exponent, NULL ^ 2); unparser.simple SimpleUnparserPowerTest
writes the same models back. TCK green on ccc and cccx (218 tests), rolap
green against this build.