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Merge pull request #2110 from jeffbolznv/escapeseq

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EXT_debug_printf - make escape sequences better match C/C++
This commit is contained in:
John Kessenich 2020-03-10 23:55:48 -06:00 committed by GitHub
commit e2176c91b2
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6 changed files with 72 additions and 37 deletions
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6
Test/baseResults/spv.debugPrintf.frag.out
View File

@ -1,7 +1,7 @@
spv.debugPrintf.frag
// Module Version 10000
// Generated by (magic number): 80008
// Id's are bound by 13
// Id's are bound by 17
Capability Shader
Extension "SPV_KHR_non_semantic_info"
@ -11,6 +11,8 @@ spv.debugPrintf.frag
EntryPoint Fragment 4 "main"
ExecutionMode 4 OriginUpperLeft
6: String "ASDF \ ? \ %d %d %d"
13: String "ABAZ"
15: String "B#$B1Z"
Source GLSL 450
SourceExtension "GL_EXT_debug_printf"
Name 4 "main"
@ -23,5 +25,7 @@ spv.debugPrintf.frag
4(main): 2 Function None 3
5: Label
12: 2 ExtInst 11(NonSemantic.DebugPrintf) 1(DebugPrintf) 6 8 9 10
14: 2 ExtInst 11(NonSemantic.DebugPrintf) 1(DebugPrintf) 13
16: 2 ExtInst 11(NonSemantic.DebugPrintf) 1(DebugPrintf) 15
Return
FunctionEnd

7
Test/baseResults/spv.debugPrintf_Error.frag.out Normal file
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@ -0,0 +1,7 @@
spv.debugPrintf_Error.frag
ERROR: 0:7: 'string' : Expected hex value in escape sequence
ERROR: 0:10: 'string' : Invalid escape sequence
ERROR: 2 compilation errors. No code generated.
SPIR-V is not generated for failed compile or link

6
Test/spv.debugPrintf.frag
View File

@ -4,4 +4,10 @@
void main()
{
debugPrintfEXT("ASDF \\ \? \x5C %d %d %d", 1, 2, 3);
// ABA{backspace}Z
debugPrintfEXT("\x41\x000042\x41\x8Z");
// B#${bell, aka \a}B1Z
debugPrintfEXT("\102\043\44\7\1021Z");
}

11
Test/spv.debugPrintf_Error.frag Normal file
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@ -0,0 +1,11 @@
#version 450
#extension GL_EXT_debug_printf : enable
void main()
{
// invalid hex sequence
debugPrintfEXT("\xZ");
// not an octal sequence
debugPrintfEXT("\8");
}

78
glslang/MachineIndependent/preprocessor/PpScanner.cpp
View File

@ -1045,28 +1045,31 @@ int TPpContext::tStringInput::scan(TPpToken* ppToken)
case 't': ch = 0x09; break;
case 'v': ch = 0x0b; break;
case 'x':
// two character hex value
nextCh = getch();
if (nextCh >= '0' && nextCh <= '9')
nextCh -= '0';
else if (nextCh >= 'A' && nextCh <= 'F')
nextCh -= 'A' - 10;
else if (nextCh >= 'a' && nextCh <= 'f')
nextCh -= 'a' - 10;
else
pp->parseContext.ppError(ppToken->loc, "Expected hex value in escape sequence", "string", "");
ch = nextCh * 0x10;
nextCh = getch();
if (nextCh >= '0' && nextCh <= '9')
nextCh -= '0';
else if (nextCh >= 'A' && nextCh <= 'F')
nextCh -= 'A' - 10;
else if (nextCh >= 'a' && nextCh <= 'f')
nextCh -= 'a' - 10;
else
pp->parseContext.ppError(ppToken->loc, "Expected hex value in escape sequence", "string", "");
ch += nextCh;
break;
// Hex value, arbitrary number of characters. Terminated by the first
// non-hex digit
{
int numDigits = 0;
ch = 0;
while (true) {
nextCh = getch();
if (nextCh >= '0' && nextCh <= '9')
nextCh -= '0';
else if (nextCh >= 'A' && nextCh <= 'F')
nextCh -= 'A' - 10;
else if (nextCh >= 'a' && nextCh <= 'f')
nextCh -= 'a' - 10;
else {
ungetch();
break;
}
numDigits++;
ch = ch * 0x10 + nextCh;
}
if (numDigits == 0) {
pp->parseContext.ppError(ppToken->loc, "Expected hex value in escape sequence", "string", "");
}
break;
}
case '0':
case '1':
case '2':
@ -1075,20 +1078,23 @@ int TPpContext::tStringInput::scan(TPpToken* ppToken)
case '5':
case '6':
case '7':
// three character octal value
nextCh = getch() - '0';
if (nextCh > 3)
pp->parseContext.ppError(ppToken->loc, "Expected octal value in escape sequence", "string", "");
ch = nextCh * 8 * 8;
nextCh = getch() - '0';
if (nextCh > 7)
pp->parseContext.ppError(ppToken->loc, "Expected octal value in escape sequence", "string", "");
ch += nextCh * 8;
nextCh = getch() - '0';
if (nextCh > 7)
pp->parseContext.ppError(ppToken->loc, "Expected octal value in escape sequence", "string", "");
ch += nextCh;
break;
// Octal value, up to three octal digits
{
int numDigits = 1;
ch = nextCh - '0';
while (numDigits < 3) {
nextCh = getch();
if (nextCh >= '0' && nextCh <= '7')
nextCh -= '0';
else {
ungetch();
break;
}
numDigits++;
ch = ch * 8 + nextCh;
}
break;
}
default:
pp->parseContext.ppError(ppToken->loc, "Invalid escape sequence", "string", "");
break;

1
gtests/Spv.FromFile.cpp
View File

@ -310,6 +310,7 @@ INSTANTIATE_TEST_CASE_P(
"spv.dataOutIndirect.frag",
"spv.dataOutIndirect.vert",
"spv.debugPrintf.frag",
"spv.debugPrintf_Error.frag",
"spv.demoteDisabled.frag",
"spv.deepRvalue.frag",
"spv.depthOut.frag",