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As this is encouraged in the referenced JEPs, "to visually distinguish a string template from a string literal, and a text block template from a text block", the default colours for java\%[Debug]StrTempl are made distinct from java\%[Debug]String. According to §3.2 Lexical Translations (JLS, c. 1996 or any more recent version), line terminators, white space, and comments are discarded before tokens are accepted. Since a template expression comprises a template processor, a dot, and a template, it may be visually appealing to break up its head across a few lines whenever its tail already spans multiple lines. Curiously, no allowance for it is made in the distributed tests for OpenJDK 21; the proposed regexp patterns take in consideration a line terminator and white space after a dot. References: https://openjdk.org/jeps/430 (Preview) https://openjdk.org/jeps/459 (Second Preview) https://openjdk.org/jeps/465 Signed-off-by: Aliaksei Budavei <0x000c70@gmail.com> Signed-off-by: Christian Brabandt <cb@256bit.org>
105 lines
2.0 KiB
Java
105 lines
2.0 KiB
Java
class StringTests // JDK 21+ (--enable-preview --release 21).
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{
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static {
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String s1 = "A quick brown fox jumps over the lazy dog";
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String s2 = "\"Woof\s!\"";
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String s3 = """
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A\s\
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quick \
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brown\s\
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fox \
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jumps\s\
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over \
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the\s\
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lazy \
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dog""";
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String s4 = """
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"Woof\s!\"""";
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String s5 = """
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String s3 = \"""
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A\\s\\
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quick \\
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brown\\s\\
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fox \\
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jumps\\s\\
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over \\
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the\\s\\
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lazy \\
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dog\""";""";
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// There are SPACE, FF, HT, CR, and LF after """.
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String empty = """
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""";
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System.out.println("""
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"
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""
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""\u005c"
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""\u005c""
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""\"\u0022\u0022
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""\"""\u005c\u0022
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""\"""\""
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""\"""\""\"""");
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System.out.println(STR."""
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"
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\{"\"\""}
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\{"\"\""}\{"\u005c\u0022"}
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\{"\"\""}\{"\u005c\u0022"}"
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\{"\"\""}\"\{"\u005c\u0022\u005c\u0022"}
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\{"\"\""}\"\{"\"\""}\{"\u005c\u0022"}
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\{"\"\""}\"\{"\"\""}\""
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\{"\"\""}\"\{"\"\""}\""\""""); // JDK 21+.
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String woof = "Woof", dog = "dog", fox = "fox";
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String s6 = STR
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."A quick brown \{fox} jumps over the lazy \{dog}";
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String s7 = STR.process(StringTemplate.RAW
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."\"\{woof}\s!\"");
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String s8 = STR."""
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A\s\
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quick \
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brown\s\
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\{fox} \
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jumps\s\
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over \
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the\s\
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lazy \
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\{dog}""";
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String s9 = STR.process(StringTemplate.RAW
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.
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"""
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"\{woof}\s!\"""");
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String s10 = java.util.FormatProcessor.FMT
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. "%-14s\{"A\s" + STR . "quick" + "brown"}%s\{fox} "
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+ java.util.FormatProcessor.FMT
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. "%-20s\{"jumps\sover the\s"
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+ STR . "lazy"}%s\{dog}";
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String s11 = STR."""
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\"\{ // A nested comment.
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(new java.util.function.Function<String, String>() {
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public String apply(String bay) { return bay; };
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}).apply(woof)
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}\s!\"""";
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String s12 = java.util.FormatProcessor.FMT
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."""
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%-14s\{STR."""
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A\s\
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\{ "quick" } \
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brown"""}\
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%s\{ fox } \
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%-20s\{STR."""
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jumps\s\
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over \
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the\s\
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\{ "lazy" } """}\
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%s\{ dog }""";
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String s13 = STR
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."\"\{ /* A nested comment. */
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((java.util.function.Function<String, String>) bay -> bay)
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.apply(woof)
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}\s!\"";
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}
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}
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