mirror of https://github.com/zachjs/sv2v.git
161 lines
4.5 KiB
Systemverilog
161 lines
4.5 KiB
Systemverilog
// This file is the same macro.sv, except with cases removed for which my and
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// iverilog's interpretations of specification differ. Below is a justification
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// for each of these differences, with reference to the specification. All
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// references are from Section 22.5.1 of IEEE 1800-2017.
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//
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// 1. Page 676 says both that the macro text continues until the first newline
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// not preceded by a backslash, and that single line comments should not be
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// included in the substituted text. My interpretation is that a macro line
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// should be able to end in, say `// foo \`, and the macro should continue onto
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// the next line. iverilog does not support such macro definitions.
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//
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// 2. Page 676 that macros with default arguments can be optionally separated by
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// whitespace. I take whitespace to include newlines, but iverilog does not.
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//
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// 3. Page 676 explicitly stats that an argument may be default to empty by
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// simply appending an '='. iverlog does not support such definitions.
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//
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// 4. Page 679 states that macro argument substitution should not be done inside
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// of a string literal. iverilog does not obey this rule.
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`define NUMBER_01 42
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`define NUMBER_02 (42)
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`define NUMBER_03 (21 * 2)
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`define NUMBER_04 21 * 2
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`define NUMBER_05 21 *\
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2
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`define NUMBER_06 21 *\
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2
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`define NUMBER_07 21 * /* foo */ 2
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`define NUMBER_08 21 *\
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/* foo */\
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2
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`define NUMBER_09 21 *\
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/* foo */ 2
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`define NUMBER_10 4 * \
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10 + \
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2
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`define NUMBER_11 42 //
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`define NUMBER_12 1337 /* stripped for iverilog compatibility */
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`define NUMBER_13 1337 /* stripped for iverilog compatibility */
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`define STRING_01 "foo\nbar"
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`define STRING_02 " foo \n bar "
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`define STRING_COMMAS_01 "test"
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`define STRING_COMMAS_02 "%s", "test"
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`define STRING_COMMAS_03 "%s%s", "te", "st"
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`define STRING_COMMAS_04 "%s%s%s", "t", "e", "st"
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`define STRING_COMMAS_05 "%s%s%s", \
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"t", "e", "st" \
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// FOO
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`define MACRO_A_01(str="bar") str, str
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`define MACRO_A_02(str= "bar") str, str
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`define MACRO_A_03(str = "bar") str, str
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`define MACRO_A_04( str = "bar") str, str
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`define MACRO_A_05( str = "bar" ) str, str
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`define MACRO_A_06(str="") 1337 /* stripped for iverilog compatibility */
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`define MACRO_A_07(str="") 1337 /* stripped for iverilog compatibility */
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/* set a non-empty default for iverilog compatibility */
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`define MACRO_B(s="baz") \
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$display(`MACRO_A_01(s));\
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$display(`MACRO_A_02(s));\
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$display(`MACRO_A_03(s));\
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$display(`MACRO_A_04(s));\
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$display(`MACRO_A_05(s));\
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$display(`MACRO_A_06(s));\
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$display(`MACRO_A_07(s));\
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$display(`MACRO_A_01( s));\
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$display(`MACRO_A_02( s));\
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$display(`MACRO_A_03( s));\
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$display(`MACRO_A_04( s));\
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$display(`MACRO_A_05( s));\
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$display(`MACRO_A_06( s));\
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$display(`MACRO_A_07( s));\
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$display(`MACRO_A_01 (s));\
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$display(`MACRO_A_02 (s));\
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$display(`MACRO_A_03 (s));\
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$display(`MACRO_A_04 (s));\
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$display(`MACRO_A_05 (s));\
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$display(`MACRO_A_06 (s));\
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$display(`MACRO_A_07 (s));\
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$display(`MACRO_A_01 (s ));\
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$display(`MACRO_A_02 (s ));\
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$display(`MACRO_A_03 (s ));\
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$display(`MACRO_A_04 (s ));\
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$display(`MACRO_A_05 (s ));\
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$display(`MACRO_A_06 (s ));\
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$display(`MACRO_A_07 (s ));\
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$display(`MACRO_A_01(\
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s\
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));\
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$display(`MACRO_A_02(\
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s\
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));\
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$display(`MACRO_A_03(\
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s\
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));\
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$display(`MACRO_A_04(\
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s\
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));\
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$display(`MACRO_A_05(\
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s\
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));\
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$display(`MACRO_A_06(\
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s\
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));\
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$display(`MACRO_A_07(\
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s\
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));
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`define MACRO_C(a, b=1) a, b
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`define MACRO_D(display) $display(display);
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/* removed MACRO_E because iverlog performs escaping withing normal quotes */
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`define MACRO_F(t) $display(`"s t = `\`"t`\`"`");
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module top;
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initial begin
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$display("%d", `NUMBER_01);
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$display("%d", `NUMBER_02);
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$display("%d", `NUMBER_03);
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$display("%d", `NUMBER_04);
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$display("%d", `NUMBER_05);
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$display("%d", `NUMBER_06);
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$display("%d", `NUMBER_07);
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$display("%d", `NUMBER_08);
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$display("%d", `NUMBER_09);
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$display("%d", `NUMBER_10);
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$display("%d", `NUMBER_11);
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$display("%d", `NUMBER_12);
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$display("%d", `NUMBER_13);
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$display("%s", `STRING_01);
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$display("%s", `STRING_02);
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$display(`STRING_COMMAS_01);
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$display(`STRING_COMMAS_02);
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$display(`STRING_COMMAS_03);
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$display(`STRING_COMMAS_04);
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$display(`STRING_COMMAS_05);
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`MACRO_B();
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`MACRO_B("foo");
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$display(`MACRO_C("foo"));
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$display(`MACRO_C("foo",));
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$display(`MACRO_C("foo",2));
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`MACRO_D("display");
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`MACRO_F(foo);
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`MACRO_F(display);
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end
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endmodule
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