langtools/test/tools/javac/literals/BadUnderscoreLiterals.java
author jjg
Tue, 15 Sep 2009 18:36:21 -0700
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6860965: Project Coin: binary literals 6860973: Project Coin: Underscores in literals Summary: [Portions contributed by Bruce Chapman] Reviewed-by: darcy
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/*
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 * @test /nodynamiccopyright/
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 * @bug 6860973
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 * @summary Project Coin: underscores in literals
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 *
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 * @compile/fail BadUnderscoreLiterals.java
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 * @compile/fail/ref=BadUnderscoreLiterals.7.out -XDrawDiagnostics BadUnderscoreLiterals.java
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 *
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 * @compile/fail -source 6 BadUnderscoreLiterals.java
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 * @compile/fail/ref=BadUnderscoreLiterals.6.out -XDrawDiagnostics -source 6 BadUnderscoreLiterals.java
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 */
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public class BadUnderscoreLiterals {
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    int valid = 1_1;            // valid literal; illegal in -source 6
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    // test zero
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    int z1 = _0;                // valid (but undefined) variable
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    int z2 = 0_;                // trailing underscore
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    // test simple (decimal) integers
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    int i1 = _1_2_3;            // valid (but undefined) variable
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    int i2 = 1_2_3_;            // trailing underscore
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    // test binary integers
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    int b1 = 0b_0;              // leading underscore after radix
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    int b2 = 0b0_;              // trailing underscore
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    // test hexadecimal integers
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    int x1 = 0x_0;              // leading underscore after radix
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    int x2 = 0x0_;              // trailing underscore
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    // test floating point numbers
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    float f1 = 0_.1;            // trailing underscore before decimal point
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    float f2 = 0._1;            // leading underscore after decimal point
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    float f3 = 0.1_;            // trailing underscore
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    float f4 = 0.1_e0;          // trailing underscore before exponent
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    float f5 = 0e_1;            // leading underscore in exponent
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    float f6 = 0e1_;            // trailing underscore in exponent
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    // hexadecimal floating point
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    float xf1 = 0x_0.1p0;       // leading underscore after radix
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    float xf2 = 0x0_.1p0;       // trailing underscore before decimal point
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    float xf3 = 0x0._1p0;       // leading underscore after decimal point
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    float xf4 = 0x0.1_p0;       // trailing underscore before exponent
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    float xf5 = 0x0p_1;         // leading underscore after exponent
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    float xf6 = 0x0p1_;         // trailing underscore
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}
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