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Preprocessor: Rationalize, simplify, and correct the stack of input sources and their tokenization. This included

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- consistently dealing with EOF and its effect on error recovery (bug 11444, #1)
 - turning a simulated OO hierarchy of function pointers and typecasting into a real C++ class hierarchy
 - correctly handling '\' everywhere, in all classes of tokens, as a layer before preprocessing itself
 - conditionally handling '\n' in macro expansion input, depending on whether it is in a macro expression or not
 - delete some unused "memory cleanup" code


git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@24626 e7fa87d3-cd2b-0410-9028-fcbf551c1848
This commit is contained in:
John Kessenich 2013-12-30 20:34:28 +00:00
parent 08d182470b
commit fcb4ed054c
16 changed files with 750 additions and 479 deletions
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22
Test/baseResults/cppComplexExpr.vert.out
View File

@ -5,14 +5,22 @@ ERROR: 0:66: '#define' : Macro redefined; different substitutions: BIG
ERROR: 0:81: 'preprocessor evaluation' : bad expression
ERROR: 0:81: '#if' : unexpected tokens following directive
ERROR: 0:82: '#error' : good macro
ERROR: 0:89: 'macro expansion' : unexpected '#' foobar
ERROR: 0:90: 'preprocessor evaluation' : bad expression
ERROR: 0:94: 'macro expansion' : unexpected '#' foobar
ERROR: 0:95: 'preprocessor evaluation' : bad expression
ERROR: 0:87: 'macro expansion' : end of line in macro substitution: foobar
ERROR: 0:88: 'preprocessor evaluation' : can't evaluate expression
ERROR: 0:88: 'preprocessor evaluation' : bad expression
ERROR: 0:88: '#if' : unexpected tokens following directive
ERROR: 0:92: 'macro expansion' : end of line in macro substitution: foobar
ERROR: 0:93: 'preprocessor evaluation' : can't evaluate expression
ERROR: 0:93: 'preprocessor evaluation' : bad expression
ERROR: 0:93: '#if' : unexpected tokens following directive
ERROR: 0:99: 'macro expansion' : end of line in macro substitution: foobar
ERROR: 0:100: 'preprocessor evaluation' : can't evaluate expression
ERROR: 0:100: 'preprocessor evaluation' : bad expression
ERROR: 0:100: '#if' : unexpected tokens following directive
ERROR: 0:102: 'macro expansion' : unexpected '#' foobar
ERROR: 0:102: 'preprocessor evaluation' : undefined macro in expression not allowed in es profile endif
ERROR: 0:101: 'macro expansion' : end of line in macro substitution: foobar
ERROR: 0:102: 'preprocessor evaluation' : can't evaluate expression
ERROR: 0:102: 'preprocessor evaluation' : bad expression
ERROR: 0:102: '#if' : unexpected tokens following directive
ERROR: 0:108: 'preprocessor evaluation' : undefined macro in expression not allowed in es profile UNDEF
ERROR: 0:111: '#error' : good 0
ERROR: 0:115: '#error' : good 1
@ -26,7 +34,7 @@ ERROR: 0:153: 'preprocessor evaluation' : undefined macro in expression not allo
ERROR: 0:156: 'preprocessor evaluation' : undefined macro in expression not allowed in es profile UNDEF2
ERROR: 0:159: 'preprocessor evaluation' : undefined macro in expression not allowed in es profile UNDEF2
ERROR: 0:10002: '' : missing #endif
ERROR: 27 compilation errors. No code generated.
ERROR: 35 compilation errors. No code generated.
ERROR: node is still EOpNull!

6
Test/baseResults/cppIndent.vert.out
View File

@ -1,6 +1,10 @@
cppIndent.vert
ERROR: 0:61: 'macro expansion' : Too few args in Macro FUNC
ERROR: 0:61: '' : syntax error
ERROR: 2 compilation errors. No code generated.
0:? Sequence
ERROR: node is still EOpNull!
0:5 Sequence
0:5 move second child to first child (float)
0:5 'sum' (float)

9
Test/baseResults/cppNest.vert.out
View File

@ -3,7 +3,9 @@ ERROR: 0:144: '#elif' : #elif after #else
ERROR: 0:152: '#else' : #else after #else
ERROR: 0:161: '#elif' : #elif after #else
ERROR: 0:169: '#else' : #else after #else
ERROR: 4 compilation errors. No code generated.
ERROR: 0:177: 'macro expansion' : EOF in macro FUNC
ERROR: 0:178: '' : syntax error
ERROR: 6 compilation errors. No code generated.
ERROR: node is still EOpNull!
@ -58,6 +60,11 @@ ERROR: node is still EOpNull!
0:133 'selected3' (int)
0:133 Constant:
0:133 3 (const int)
0:175 Function Definition: foo985( (void)
0:175 Function Parameters:
0:175 Sequence
0:175 Constant:
0:175 6 (const int)
0:? Linker Objects
0:? 'sum' (float)
0:? 'selected4' (int)

23
Test/baseResults/cppSimple.vert.out
View File

@ -6,15 +6,15 @@ ERROR: 0:85: '#error' : good3
ERROR: 0:89: '#error' : good4
ERROR: 0:93: '#error' : good5
ERROR: 0:97: '#error' : good6
ERROR: 0:101: 'preprocessor evaluation' : expected ')'
ERROR: 0:100: 'preprocessor evaluation' : expected ')'
ERROR: 0:101: '#error' : bad1
ERROR: 0:104: '#if' : unexpected tokens following directive
ERROR: 0:105: '#error' : bad2
ERROR: 0:109: 'preprocessor evaluation' : expected ')'
ERROR: 0:108: 'preprocessor evaluation' : expected ')'
ERROR: 0:109: '#error' : bad3
ERROR: 0:112: '#if' : unexpected tokens following directive
ERROR: 0:113: '#error' : bad4
ERROR: 0:117: 'preprocessor evaluation' : expected ')'
ERROR: 0:116: 'preprocessor evaluation' : expected ')'
ERROR: 0:117: '#error' : bad5
ERROR: 0:120: '#if' : unexpected tokens following directive
ERROR: 0:121: '#error' : bad6
@ -74,8 +74,16 @@ ERROR: 12:20021: '#error' : line should be 20021
ERROR: 12:20046: '#define' : Macro redefined; different substitutions: SPACE_IN_MIDDLE
ERROR: 12:20052: '#error' : good evaluation 1
ERROR: 12:20056: '#error' : good evaluation 2
ERROR: 12:9001: 'preprocessor evaluation' : expected ')'
ERROR: 12:9003: '#if' : unexpected tokens following directive
ERROR: 12:9015: 'macro expansion' : expected '(' following FOOOM
ERROR: 12:9015: 'FOOOM' : undeclared identifier
ERROR: 12:9015: '=' : cannot convert from 'float' to 'int'
ERROR: 12:9016: 'macro expansion' : expected '(' following FOOOM
ERROR: 12:9017: 'preprocessor evaluation' : can't evaluate expression
ERROR: 12:9017: 'preprocessor evaluation' : bad expression
ERROR: 12:10003: '' : missing #endif
ERROR: 75 compilation errors. No code generated.
ERROR: 83 compilation errors. No code generated.
ERROR: node is still EOpNull!
@ -165,6 +173,10 @@ ERROR: node is still EOpNull!
12:20034 6.000000
12:20034 6.000000
12:20034 6.000000
12:9012 Sequence
12:9012 move second child to first child (int)
12:9012 'R1' (int)
12:9012 'RECURSE' (int)
0:? Linker Objects
0:? 'sum' (float)
0:? 'linenumber' (int)
@ -174,6 +186,9 @@ ERROR: node is still EOpNull!
0:? 'a' (int)
0:? 'n' (int)
0:? 'f' (double)
0:? 'RECURSE' (int)
0:? 'R1' (int)
0:? 'aoeua' (int)
0:? 'gl_VertexID' (gl_VertexId int)
0:? 'gl_InstanceID' (gl_InstanceId int)

100
Test/baseResults/lineContinuation.vert.out
View File

@ -12,7 +12,15 @@ ERROR: 0:48: '\' : illegal use of escape character
ERROR: 0:49: '$' : unexpected token
ERROR: 0:50: '@' : unexpected token
ERROR: 0:55: '#error' : good continuation
ERROR: 12 compilation errors. No code generated.
WARNING: 0:62: 'line continuation' : used at end of comment; the following line is still part of the comment
ERROR: 0:111: 'macro expansion' : end of line in macro substitution: FOOM
ERROR: 0:112: 'preprocessor evaluation' : can't evaluate expression
ERROR: 0:112: '#if' : unexpected tokens following directive
ERROR: 0:117: 'macro expansion' : end of line in macro substitution: FOOM
ERROR: 0:118: 'preprocessor evaluation' : can't evaluate expression
ERROR: 0:118: '#if' : unexpected tokens following directive
ERROR: 0:147: '' : syntax error
ERROR: 19 compilation errors. No code generated.
ERROR: node is still EOpNull!
@ -72,6 +80,84 @@ ERROR: node is still EOpNull!
0:50 'q4' (highp int)
0:50 Constant:
0:50 1 (const int)
0:65 Sequence
0:65 move second child to first child (highp int)
0:65 'abdece' (highp int)
0:65 Constant:
0:65 10 (const int)
0:66 Sequence
0:66 move second child to first child (highp int)
0:66 'aoeuntaoehu' (highp int)
0:66 'abdece' (highp int)
0:74 Sequence
0:74 move second child to first child (highp float)
0:74 'funkyf' (highp float)
0:75 Constant:
0:75 12300000000000000.000000
0:85 Sequence
0:84 move second child to first child (highp int)
0:84 'funkyh' (highp int)
0:86 Constant:
0:86 244 (const int)
0:91 Sequence
0:91 move second child to first child (highp int)
0:91 'funkyo' (highp int)
0:92 Constant:
0:92 34 (const int)
0:96 Sequence
0:96 move second child to first child (highp int)
0:96 'c' (highp int)
0:97 Constant:
0:97 11 (const int)
0:98 Sequence
0:98 move second child to first child (highp int)
0:98 'd' (highp int)
0:98 Constant:
0:98 12 (const int)
0:107 Sequence
0:107 move second child to first child (highp int)
0:107 'bar103' (highp int)
0:107 Constant:
0:107 17 (const int)
0:113 Sequence
0:113 move second child to first child (highp int)
0:113 'bar104' (highp int)
0:113 Constant:
0:113 19 (const int)
0:119 Sequence
0:119 move second child to first child (highp int)
0:119 'bar105' (highp int)
0:119 Constant:
0:119 19 (const int)
0:122 Sequence
0:122 move second child to first child (highp int)
0:122 'bar106' (highp int)
0:122 Constant:
0:122 12 (const int)
0:123 Sequence
0:123 move second child to first child (highp int)
0:123 'bar107' (highp int)
0:128 Constant:
0:128 5 (const int)
0:131 Function Definition: foo203209409( (void)
0:131 Function Parameters:
0:134 Sequence
0:134 add second child into first child (highp int)
0:133 'bar107' (highp int)
0:134 Constant:
0:134 37 (const int)
0:135 multiply second child into first child (highp int)
0:135 'bar107' (highp int)
0:136 Constant:
0:136 38 (const int)
0:137 divide second child into first child (highp int)
0:137 'bar107' (highp int)
0:138 Constant:
0:138 39 (const int)
0:139 add (highp int)
0:139 'bar107' (highp int)
0:140 Constant:
0:140 41 (const int)
0:? Linker Objects
0:? 'foo' (highp float)
0:? 'goodDecl' (highp int)
@ -83,6 +169,18 @@ ERROR: node is still EOpNull!
0:? 'q2' (highp int)
0:? 'q3' (highp int)
0:? 'q4' (highp int)
0:? 'abdece' (highp int)
0:? 'aoeuntaoehu' (highp int)
0:? 'funkyf' (highp float)
0:? 'funkyh' (highp int)
0:? 'funkyo' (highp int)
0:? 'c' (highp int)
0:? 'd' (highp int)
0:? 'bar103' (highp int)
0:? 'bar104' (highp int)
0:? 'bar105' (highp int)
0:? 'bar106' (highp int)
0:? 'bar107' (highp int)
0:? 'gl_VertexID' (gl_VertexId highp int)
0:? 'gl_InstanceID' (gl_InstanceId highp int)

4
Test/cppIndent.vert
View File

@ -55,3 +55,7 @@ sum += 900000000.0;
// sum should be 980600301.0
gl_Position = vec4(sum);
}
#define FUNC(a,b) a+b
// needs to be last test in file due to syntax error
void foo986(){ FUNC( (((2)))), 4); } // ERROR, too many )

5
Test/cppNest.vert
View File

@ -170,3 +170,8 @@ int;
int;
#endif
#endif
#define FUNC(a,b) a+b
void foo985(){ FUNC( (((2))), ((3),4)); }
// needs to be last test in file
void foo987(){ FUNC(((); } // ERROR, EOF in argument

20
Test/cppSimple.vert
View File

@ -306,6 +306,26 @@ void foo234()
#error good evaluation 2
#endif
// ERRORS...
#line 9000
#if defined(OUNH
#endif
#if defined OUNH)
#endif
// recursion (okay)
#define RECURSE RECURSE
int RECURSE;
#define R2 R1
#define R1 R2
#undef RECURSE
int R1 = RECURSE;
#define FOOOM(a,b) a + b
int aoeua = FOOOM;
#if FOOOM
#endif
#line 10000
#if 1
#else

93
Test/lineContinuation.vert
View File

@ -54,4 +54,95 @@ D;
# \
error good continuation
#define AA a \ b
#define AA1 a \ b
#define AA2 a \\ b
#define AA3 a \\\ b
#define AA4 a \\\\ b
// anoetuh nonaetu \\\\\\
still in comment
int abdece = 10;
int aoeuntaoehu = abd\
\
\
\
\
\
ece;
float funkyf = \
.\
1\
2\
3\
e\
+\
1\
7\
;\
int funkyh\
=\
0\
x\
f\
4\
;
int funkyo =\
0\
4\
2\
;
int c = \
11;
int d = 1\
2;
#define FOOM(a,b) a + b
#if FO\
OM(2\
,\
3)
int bar103 = 17;
#endif
// ERROR
#if FOOM(2,
3)
int bar104 = 19;
#endif
// ERROR
#if FOOM(
2,3)
int bar105 = 19;
#endif
int bar106 = FOOM(5,7);
int bar107 = FOOM // okay
(
2
,
3
)
;
void foo203209409()
{
bar107 \
+= 37;
bar107 *\
= 38;
bar107 /=\
39;
bar107 +\
41;
}
void foo230920394()
{
// syntax error
bar107 +\
= 42;
}

4
glslang/Include/revision.h
View File

@ -9,5 +9,5 @@
// source have to figure out how to create revision.h just to get a build
// going. However, if it is not updated, it can be a version behind.
#define GLSLANG_REVISION "24569"
#define GLSLANG_DATE "2013/12/18 11:47:12"
#define GLSLANG_REVISION "24594"
#define GLSLANG_DATE "2013/12/20 11:36:27"

272
glslang/MachineIndependent/preprocessor/Pp.cpp
View File

@ -132,7 +132,7 @@ int TPpContext::CPPdefine(TPpToken* ppToken)
Symbol *symb;
// get macro name
int token = currentInput->scan(this, currentInput, ppToken);
int token = scanToken(ppToken);
if (token != CPP_IDENTIFIER) {
parseContext.error(ppToken->loc, "must be followed by macro name", "#define", "");
return token;
@ -145,12 +145,12 @@ int TPpContext::CPPdefine(TPpToken* ppToken)
}
// gather parameters to the macro, between (...)
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (token == '(' && ! ppToken->space) {
int argc = 0;
int args[maxMacroArgs];
do {
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (argc == 0 && token == ')')
break;
if (token != CPP_IDENTIFIER) {
@ -173,7 +173,7 @@ int TPpContext::CPPdefine(TPpToken* ppToken)
else
parseContext.error(ppToken->loc, "too many macro parameters", "#define", "");
}
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
} while (token == ',');
if (token != ')') {
parseContext.error(ppToken->loc, "missing parenthesis", "#define", "");
@ -183,7 +183,7 @@ int TPpContext::CPPdefine(TPpToken* ppToken)
mac.argc = argc;
mac.args = (int*)mem_Alloc(pool, argc * sizeof(int));
memcpy(mac.args, args, argc * sizeof(int));
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
}
// record the definition of the macro
@ -191,7 +191,7 @@ int TPpContext::CPPdefine(TPpToken* ppToken)
mac.body = new TokenStream;
while (token != '\n') {
RecordToken(mac.body, token, ppToken);
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (token != '\n' && ppToken->space)
RecordToken(mac.body, ' ', ppToken);
}
@ -238,7 +238,7 @@ int TPpContext::CPPdefine(TPpToken* ppToken)
// Handle #undef
int TPpContext::CPPundef(TPpToken* ppToken)
{
int token = currentInput->scan(this, currentInput, ppToken);
int token = scanToken(ppToken);
Symbol *symb;
if (token != CPP_IDENTIFIER) {
parseContext.error(ppToken->loc, "must be followed by macro name", "#undef", "");
@ -246,14 +246,14 @@ int TPpContext::CPPundef(TPpToken* ppToken)
return token;
}
const char* name = GetAtomString(ppToken->atom); // TODO preprocessor simplification: the token text should have been built into the ppToken during currentInput->scan()
const char* name = GetAtomString(ppToken->atom); // TODO preprocessor simplification: the token text should have been built into the ppToken during scanToken()
parseContext.reservedPpErrorCheck(ppToken->loc, name, "#undef");
symb = LookUpSymbol(ppToken->atom);
if (symb) {
symb->mac.undef = 1;
}
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (token != '\n')
parseContext.error(ppToken->loc, "can only be followed by a single macro name", "#undef", "");
@ -269,21 +269,21 @@ int TPpContext::CPPelse(int matchelse, TPpToken* ppToken)
{
int atom;
int depth = 0;
int token = currentInput->scan(this, currentInput, ppToken);
int token = scanToken(ppToken);
while (token != EOF) {
if (token != '#') {
while (token != '\n' && token != EOF)
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (token == EOF)
return EOF;
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
continue;
}
if ((token = currentInput->scan(this, currentInput, ppToken)) != CPP_IDENTIFIER)
if ((token = scanToken(ppToken)) != CPP_IDENTIFIER)
continue;
atom = ppToken->atom;
@ -292,7 +292,7 @@ int TPpContext::CPPelse(int matchelse, TPpToken* ppToken)
ifdepth++;
elsetracker++;
} else if (atom == endifAtom) {
token = extraTokenCheck(atom, ppToken, currentInput->scan(this, currentInput, ppToken));
token = extraTokenCheck(atom, ppToken, scanToken(ppToken));
elseSeen[elsetracker] = false;
--elsetracker;
if (depth == 0) {
@ -306,7 +306,7 @@ int TPpContext::CPPelse(int matchelse, TPpToken* ppToken)
} else if (matchelse && depth == 0) {
if (atom == elseAtom) {
elseSeen[elsetracker] = true;
token = extraTokenCheck(atom, ppToken, currentInput->scan(this, currentInput, ppToken));
token = extraTokenCheck(atom, ppToken, scanToken(ppToken));
// found the #else we are looking for
break;
} else if (atom == elifAtom) {
@ -327,7 +327,7 @@ int TPpContext::CPPelse(int matchelse, TPpToken* ppToken)
parseContext.error(ppToken->loc, "#else after #else", "#else", "");
else
elseSeen[elsetracker] = true;
token = extraTokenCheck(atom, ppToken, currentInput->scan(this, currentInput, ppToken));
token = extraTokenCheck(atom, ppToken, scanToken(ppToken));
} else if (atom == elifAtom) {
if (elseSeen[elsetracker])
parseContext.error(ppToken->loc, "#elif after #else", "#elif", "");
@ -363,7 +363,7 @@ int TPpContext::extraTokenCheck(int atom, TPpToken* ppToken, int token)
parseContext.error(ppToken->loc, message, label, "");
while (token != '\n')
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
}
return token;
@ -438,16 +438,17 @@ struct TUnop {
int TPpContext::eval(int token, int precedence, bool shortCircuit, int& res, bool& err, TPpToken* ppToken)
{
TSourceLoc loc = ppToken->loc; // because we sometimes read the newline before reporting the error
if (token == CPP_IDENTIFIER) {
if (ppToken->atom == definedAtom) {
bool needclose = 0;
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (token == '(') {
needclose = true;
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
}
if (token != CPP_IDENTIFIER) {
parseContext.error(ppToken->loc, "incorrect directive, expected identifier", "preprocessor evaluation", "");
parseContext.error(loc, "incorrect directive, expected identifier", "preprocessor evaluation", "");
err = true;
res = 0;
@ -455,16 +456,16 @@ int TPpContext::eval(int token, int precedence, bool shortCircuit, int& res, boo
}
Symbol* s;
res = (s = LookUpSymbol(ppToken->atom)) ? !s->mac.undef : 0;
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (needclose) {
if (token != ')') {
parseContext.error(ppToken->loc, "#else after #else", "preprocessor evaluation", "");
parseContext.error(loc, "expected ')'", "preprocessor evaluation", "");
err = true;
res = 0;
return token;
}
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
}
} else {
token = evalToToken(token, shortCircuit, res, err, ppToken);
@ -472,19 +473,19 @@ int TPpContext::eval(int token, int precedence, bool shortCircuit, int& res, boo
}
} else if (token == CPP_INTCONSTANT) {
res = ppToken->ival;
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
} else if (token == '(') {
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
token = eval(token, MIN_PRECEDENCE, shortCircuit, res, err, ppToken);
if (! err) {
if (token != ')') {
parseContext.error(ppToken->loc, "expected ')'", "preprocessor evaluation", "");
parseContext.error(loc, "expected ')'", "preprocessor evaluation", "");
err = true;
res = 0;
return token;
}
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
}
} else {
int op;
@ -493,11 +494,11 @@ int TPpContext::eval(int token, int precedence, bool shortCircuit, int& res, boo
break;
}
if (op >= 0) {
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
token = eval(token, UNARY, shortCircuit, res, err, ppToken);
res = unop[op].op(res);
} else {
parseContext.error(ppToken->loc, "bad expression", "preprocessor evaluation", "");
parseContext.error(loc, "bad expression", "preprocessor evaluation", "");
err = true;
res = 0;
@ -528,7 +529,7 @@ int TPpContext::eval(int token, int precedence, bool shortCircuit, int& res, boo
shortCircuit = true;
}
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
token = eval(token, binop[op].precedence, shortCircuit, res, err, ppToken);
res = binop[op].op(leftSide, res);
}
@ -540,11 +541,12 @@ int TPpContext::eval(int token, int precedence, bool shortCircuit, int& res, boo
int TPpContext::evalToToken(int token, bool shortCircuit, int& res, bool& err, TPpToken* ppToken)
{
while (token == CPP_IDENTIFIER && ppToken->atom != definedAtom) {
int macroReturn = MacroExpand(ppToken->atom, ppToken, true);
int macroReturn = MacroExpand(ppToken->atom, ppToken, true, false);
if (macroReturn == 0) {
parseContext.error(ppToken->loc, "can't evaluate expression", "preprocessor evaluation", "");
err = true;
res = 0;
token = scanToken(ppToken);
break;
}
if (macroReturn == -1) {
@ -557,7 +559,7 @@ int TPpContext::evalToToken(int token, bool shortCircuit, int& res, bool& err, T
parseContext.error(ppToken->loc, message, "preprocessor evaluation", name);
}
}
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
}
return token;
@ -566,7 +568,7 @@ int TPpContext::evalToToken(int token, bool shortCircuit, int& res, bool& err, T
// Handle #if
int TPpContext::CPPif(TPpToken* ppToken)
{
int token = currentInput->scan(this, currentInput, ppToken);
int token = scanToken(ppToken);
elsetracker++;
if (! ifdepth++)
ifloc = ppToken->loc;
@ -587,7 +589,7 @@ int TPpContext::CPPif(TPpToken* ppToken)
// Handle #ifdef
int TPpContext::CPPifdef(int defined, TPpToken* ppToken)
{
int token = currentInput->scan(this, currentInput, ppToken);
int token = scanToken(ppToken);
int name = ppToken->atom;
if (++ifdepth > maxIfNesting) {
parseContext.error(ppToken->loc, "maximum nesting depth exceeded", "#ifdef", "");
@ -601,11 +603,11 @@ int TPpContext::CPPifdef(int defined, TPpToken* ppToken)
parseContext.error(ppToken->loc, "must be followed by macro name", "#ifndef", "");
} else {
Symbol *s = LookUpSymbol(name);
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (token != '\n') {
parseContext.error(ppToken->loc, "unexpected tokens following #ifdef directive - expected a newline", "#ifdef", "");
while (token != '\n')
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
}
if (((s && !s->mac.undef) ? 1 : 0) != defined)
token = CPPelse(1, ppToken);
@ -621,7 +623,7 @@ int TPpContext::CPPline(TPpToken* ppToken)
// "#line line
// "#line line source-string-number"
int token = currentInput->scan(this, currentInput, ppToken);
int token = scanToken(ppToken);
if (token == '\n') {
parseContext.error(ppToken->loc, "must by followed by an integral literal", "#line", "");
return token;
@ -651,7 +653,7 @@ int TPpContext::CPPline(TPpToken* ppToken)
// Handle #error
int TPpContext::CPPerror(TPpToken* ppToken)
{
int token = currentInput->scan(this, currentInput, ppToken);
int token = scanToken(ppToken);
std::string message;
TSourceLoc loc = ppToken->loc;
@ -665,7 +667,7 @@ int TPpContext::CPPerror(TPpToken* ppToken)
message.append(GetAtomString(token));
}
message.append(" ");
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
}
//store this msg into the shader's information log..set the Compile Error flag!!!!
parseContext.error(loc, message.c_str(), "#error", "");
@ -683,7 +685,7 @@ int TPpContext::CPPpragma(TPpToken* ppToken)
TVector<TString> tokens;
TSourceLoc loc = ppToken->loc; // because we go to the next line before processing
int token = currentInput->scan(this, currentInput, ppToken);
int token = scanToken(ppToken);
while (token != '\n' && token != EOF) {
switch (token) {
case CPP_IDENTIFIER:
@ -702,7 +704,7 @@ int TPpContext::CPPpragma(TPpToken* ppToken)
SrcStrName[1] = '\0';
tokens.push_back(SrcStrName);
}
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
}
if (token == EOF)
@ -716,7 +718,7 @@ int TPpContext::CPPpragma(TPpToken* ppToken)
// #version: This is just for error checking: the version and profile are decided before preprocessing starts
int TPpContext::CPPversion(TPpToken* ppToken)
{
int token = currentInput->scan(this, currentInput, ppToken);
int token = scanToken(ppToken);
if (errorOnVersion || versionSeen)
parseContext.error(ppToken->loc, "must occur first in shader", "#version", "");
@ -733,7 +735,7 @@ int TPpContext::CPPversion(TPpToken* ppToken)
ppToken->ival = atoi(ppToken->name);
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (token == '\n')
return token;
@ -743,7 +745,7 @@ int TPpContext::CPPversion(TPpToken* ppToken)
ppToken->atom != esAtom)
parseContext.error(ppToken->loc, "bad profile name; use es, core, or compatibility", "#version", "");
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (token == '\n')
return token;
@ -757,7 +759,7 @@ int TPpContext::CPPversion(TPpToken* ppToken)
// Handle #extension
int TPpContext::CPPextension(TPpToken* ppToken)
{
int token = currentInput->scan(this, currentInput, ppToken);
int token = scanToken(ppToken);
char extensionName[80];
if (token=='\n') {
@ -770,13 +772,13 @@ int TPpContext::CPPextension(TPpToken* ppToken)
strcpy(extensionName, GetAtomString(ppToken->atom));
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (token != ':') {
parseContext.error(ppToken->loc, "':' missing after extension name", "#extension", "");
return token;
}
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (token != CPP_IDENTIFIER) {
parseContext.error(ppToken->loc, "behavior for extension not specified", "#extension", "");
return token;
@ -784,7 +786,7 @@ int TPpContext::CPPextension(TPpToken* ppToken)
parseContext.updateExtensionBehavior(extensionName, GetAtomString(ppToken->atom));
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (token == '\n')
return token;
else
@ -795,7 +797,7 @@ int TPpContext::CPPextension(TPpToken* ppToken)
int TPpContext::readCPPline(TPpToken* ppToken)
{
int token = currentInput->scan(this, currentInput, ppToken);
int token = scanToken(ppToken);
bool isVersion = false;
if (token == CPP_IDENTIFIER) {
@ -807,7 +809,7 @@ int TPpContext::readCPPline(TPpToken* ppToken)
elsetracker[elseSeen] = true;
if (! ifdepth)
parseContext.error(ppToken->loc, "mismatched statements", "#else", "");
token = extraTokenCheck(elseAtom, ppToken, currentInput->scan(this, currentInput, ppToken));
token = extraTokenCheck(elseAtom, ppToken, scanToken(ppToken));
token = CPPelse(0, ppToken);
} else if (ppToken->atom == elifAtom) {
if (! ifdepth)
@ -815,9 +817,9 @@ int TPpContext::readCPPline(TPpToken* ppToken)
if (elseSeen[elsetracker])
parseContext.error(ppToken->loc, "#elif after #else", "#elif", "");
// this token is really a dont care, but we still need to eat the tokens
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
while (token != '\n')
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
token = CPPelse(0, ppToken);
} else if (ppToken->atom == endifAtom) {
elseSeen[elsetracker] = false;
@ -826,7 +828,7 @@ int TPpContext::readCPPline(TPpToken* ppToken)
parseContext.error(ppToken->loc, "mismatched statements", "#endif", "");
else
--ifdepth;
token = extraTokenCheck(endifAtom, ppToken, currentInput->scan(this, currentInput, ppToken));
token = extraTokenCheck(endifAtom, ppToken, scanToken(ppToken));
} else if (ppToken->atom == ifAtom) {
token = CPPif (ppToken);
} else if (ppToken->atom == ifdefAtom) {
@ -849,38 +851,16 @@ int TPpContext::readCPPline(TPpToken* ppToken)
} else {
parseContext.error(ppToken->loc, "invalid directive:", "#", GetAtomString(ppToken->atom));
}
} else if (token != '\n' && token > 0)
} else if (token != '\n' && token != EOF)
parseContext.error(ppToken->loc, "invalid directive", "#", "");
while (token != '\n' && token != 0 && token != EOF)
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
return token;
}
int eof_scan(TPpContext*, TPpContext::InputSrc* in, TPpToken* ppToken) { return -1; }
void noop(TPpContext*, TPpContext::InputSrc* in, int ch, TPpToken* ppToken) { }
void TPpContext::PushEofSrc()
{
InputSrc *in = new InputSrc;
in->scan = eof_scan;
in->getch = eof_scan;
in->ungetch = noop;
in->prev = currentInput;
currentInput = in;
}
void TPpContext::PopEofSrc()
{
if (currentInput->scan == eof_scan) {
InputSrc *in = currentInput;
currentInput = in->prev;
delete in;
}
}
TPpContext::TokenStream* TPpContext::PrescanMacroArg(TokenStream *a, TPpToken* ppToken)
TPpContext::TokenStream* TPpContext::PrescanMacroArg(TokenStream* a, TPpToken* ppToken, bool newLineOkay)
{
int token;
TokenStream *n;
@ -889,89 +869,79 @@ TPpContext::TokenStream* TPpContext::PrescanMacroArg(TokenStream *a, TPpToken* p
token = ReadToken(a, ppToken);
if (token == CPP_IDENTIFIER && LookUpSymbol(ppToken->atom))
break;
} while (token != EOF);
if (token == EOF)
} while (token != tInput::endOfInput);
if (token == tInput::endOfInput)
return a;
n = new TokenStream;
PushEofSrc();
ReadFromTokenStream(a, 0, 0);
while ((token = currentInput->scan(this, currentInput, ppToken)) > 0) {
if (token == CPP_IDENTIFIER && MacroExpand(ppToken->atom, ppToken, false) == 1)
pushInput(new tMarkerInput(this));
pushTokenStreamInput(a, 0);
while ((token = scanToken(ppToken)) != tMarkerInput::marker) {
if (token == CPP_IDENTIFIER && MacroExpand(ppToken->atom, ppToken, false, newLineOkay) != 0)
continue;
RecordToken(n, token, ppToken);
}
PopEofSrc();
popInput();
delete a;
return n;
}
//
// These are called through function pointers
// Return the next token for a macro expansion, handling macro args.
//
/*
** return the next token for a macro expansion, handling macro args
*/
int TPpContext::macro_scan(TPpContext* pp, InputSrc* inInput, TPpToken* ppToken)
int TPpContext::tMacroInput::scan(TPpToken* ppToken)
{
MacroInputSrc* in = (TPpContext::MacroInputSrc*)inInput;
int i;
int token;
do {
token = pp->ReadToken(in->mac->body, ppToken);
token = pp->ReadToken(mac->body, ppToken);
} while (token == ' '); // handle white space in macro
// TODO: preprocessor: properly handle whitespace (or lack of it) between tokens when expanding
if (token == CPP_IDENTIFIER) {
for (i = in->mac->argc-1; i>=0; i--)
if (in->mac->args[i] == ppToken->atom)
int i;
for (i = mac->argc - 1; i >= 0; i--)
if (mac->args[i] == ppToken->atom)
break;
if (i >= 0) {
pp->ReadFromTokenStream(in->args[i], ppToken->atom, 0);
pp->pushTokenStreamInput(args[i], ppToken->atom);
return pp->currentInput->scan(pp, pp->currentInput, ppToken);
return pp->scanToken(ppToken);
}
}
if (token != EOF)
if (token == endOfInput)
mac->busy = 0;
return token;
in->mac->busy = 0;
pp->currentInput = in->prev;
delete in;
return pp->currentInput->scan(pp, pp->currentInput, ppToken);
}
// return a zero, for scanning a macro that was never defined
int TPpContext::zero_scan(TPpContext* pp, InputSrc *inInput, TPpToken* ppToken)
int TPpContext::tZeroInput::scan(TPpToken* ppToken)
{
MacroInputSrc* in = (MacroInputSrc*)inInput;
if (done)
return endOfInput;
strcpy(ppToken->name, "0");
ppToken->ival = 0;
ppToken->space = false;
// pop input
pp->currentInput = in->prev;
delete in;
done = true;
return CPP_INTCONSTANT;
}
/*
** Check an identifier (atom) to see if it is a macro that should be expanded.
** If it is, and defined, push an InputSrc that will produce the appropriate expansion
** and return 1.
** If it is, but undefined, and expandUndef is requested, push an InputSrc that will
** expand to 0 and return -1.
** Otherwise, return 0.
*/
int TPpContext::MacroExpand(int atom, TPpToken* ppToken, bool expandUndef)
//
// Check an identifier (atom) to see if it is a macro that should be expanded.
// If it is, and defined, push an tInput that will produce the appropriate expansion
// and return 1.
// If it is, but undefined, and expandUndef is requested, push an tInput that will
// expand to 0 and return -1.
// Otherwise, return 0 to indicate no expansion, which is not necessarily an error.
//
int TPpContext::MacroExpand(int atom, TPpToken* ppToken, bool expandUndef, bool newLineOkay)
{
Symbol *sym = LookUpSymbol(atom);
MacroInputSrc *in;
int token;
int depth = 0;
@ -1004,30 +974,32 @@ int TPpContext::MacroExpand(int atom, TPpToken* ppToken, bool expandUndef)
if (sym && sym->mac.busy)
return 0;
// not expanding of undefined symbols
// not expanding undefined macros
if ((! sym || sym->mac.undef) && ! expandUndef)
return 0;
in = new MacroInputSrc;
// 0 is the value of an undefined macro
if ((! sym || sym->mac.undef) && expandUndef) {
// push input
in->scan = zero_scan;
in->prev = currentInput;
currentInput = in;
pushInput(new tZeroInput(this));
return -1;
}
tMacroInput *in = new tMacroInput(this);
TSourceLoc loc = ppToken->loc; // in case we go to the next line before discovering the error
in->scan = macro_scan;
in->mac = &sym->mac;
if (sym->mac.args) {
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (newLineOkay) {
while (token == '\n')
token = scanToken(ppToken);
}
if (token != '(') {
parseContext.error(loc, "expected '(' following", "macro expansion", GetAtomString(atom));
UngetToken(token, ppToken);
ppToken->atom = atom;
delete in;
return 0;
}
in->args.resize(in->mac->argc);
@ -1038,23 +1010,24 @@ int TPpContext::MacroExpand(int atom, TPpToken* ppToken, bool expandUndef)
do {
depth = 0;
while (1) {
token = currentInput->scan(this, currentInput, ppToken);
if (token <= 0) {
token = scanToken(ppToken);
if (token == EOF) {
parseContext.error(loc, "EOF in macro", "macro expansion", GetAtomString(atom));
return 1;
delete in;
return 0;
}
if (token == '\n') {
// TODO: Preprocessor functionality: Correctly handle new line and escaped new line, for expansions that are both in and not in another preprocessor directive
//if (in a pp line) {
// parseContext.error(loc, "missing ')':", "macro expansion", GetAtomString(atom));
// return 1;
//}
if (! newLineOkay) {
parseContext.error(loc, "end of line in macro substitution:", "macro expansion", GetAtomString(atom));
delete in;
return 0;
}
continue;
}
if (token == '#') {
parseContext.error(ppToken->loc, "unexpected '#'", "macro expansion", GetAtomString(atom));
return 1;
delete in;
return 0;
}
if (in->mac->argc == 0 && token != ')')
break;
@ -1080,29 +1053,28 @@ int TPpContext::MacroExpand(int atom, TPpToken* ppToken, bool expandUndef)
parseContext.error(loc, "Too few args in Macro", "macro expansion", GetAtomString(atom));
else if (token != ')') {
depth=0;
while (token >= 0 && (depth > 0 || token != ')')) {
while (token != EOF && (depth > 0 || token != ')')) {
if (token == ')')
depth--;
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
if (token == '(')
depth++;
}
if (token <= 0) {
if (token == EOF) {
parseContext.error(loc, "EOF in macro", "macro expansion", GetAtomString(atom));
return 1;
delete in;
return 0;
}
parseContext.error(loc, "Too many args in macro", "macro expansion", GetAtomString(atom));
}
for (int i = 0; i < in->mac->argc; i++)
in->args[i] = PrescanMacroArg(in->args[i], ppToken);
in->args[i] = PrescanMacroArg(in->args[i], ppToken, newLineOkay);
}
/*retain the input source*/
in->prev = currentInput;
pushInput(in);
sym->mac.busy = 1;
RewindTokenStream(sym->mac.body);
currentInput = in;
return 1;
}

17
glslang/MachineIndependent/preprocessor/PpContext.cpp
View File

@ -84,7 +84,7 @@ NVIDIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
namespace glslang {
TPpContext::TPpContext(TParseContext& pc) :
preamble(0), strings(0), parseContext(pc)
preamble(0), strings(0), parseContext(pc), inComment(false)
{
InitAtomTable();
InitScanner(this);
@ -143,17 +143,18 @@ TPpContext::~TPpContext()
delete it->second->mac.body;
mem_FreePool(pool);
delete [] preamble;
// free up the inputStack
while (! inputStack.empty())
popInput();
}
void TPpContext::setInput(TInputScanner& input, bool versionWillBeError)
{
StringInputSrc* in = new StringInputSrc;
in->input = &input;
in->scan = sourceScan;
in->getch = (int (*)(TPpContext*, InputSrc *, TPpToken *))sourceGetCh;
in->ungetch = (void (*)(TPpContext*, InputSrc *, int, TPpToken *))sourceUngetCh;
in->prev = currentInput;
currentInput = in;
assert(inputStack.size() == 0);
pushInput(new tStringInput(this, input));
errorOnVersion = versionWillBeError;
versionSeen = false;
}

142
glslang/MachineIndependent/preprocessor/PpContext.h
View File

@ -121,19 +121,37 @@ public:
virtual ~TPpContext();
void setPreamble(const char* preamble, size_t length);
void setInput(TInputScanner& input, bool versionWillBeError);
const char* tokenize(TPpToken* ppToken);
// TODO: preprocessor simplification: this should be a base class, not a set of function pointers
struct InputSrc {
InputSrc() : prev(0), scan(0), getch(0), ungetch(0) { }
struct InputSrc *prev;
int (*scan)(TPpContext*, struct InputSrc *, TPpToken *);
int (*getch)(TPpContext*, struct InputSrc *, TPpToken *);
void (*ungetch)(TPpContext*, struct InputSrc *, int, TPpToken *);
class tInput {
public:
tInput(TPpContext* p) : done(false), pp(p) { }
virtual ~tInput() { }
virtual int scan(TPpToken*) = 0;
virtual int getch() = 0;
virtual void ungetch() = 0;
static const int endOfInput = -2;
protected:
bool done;
TPpContext* pp;
};
void setInput(TInputScanner& input, bool versionWillBeError);
void TPpContext::pushInput(tInput* in)
{
inputStack.push_back(in);
}
void TPpContext::popInput()
{
delete inputStack.back();
inputStack.pop_back();
}
struct TokenStream {
TokenStream() : current(0) { }
TVector<unsigned char> data;
@ -145,7 +163,6 @@ public:
uintptr_t free, end;
size_t chunksize;
uintptr_t alignmask;
struct cleanup *cleanup;
};
//
@ -184,10 +201,31 @@ protected:
int currentString; // which string we're currently parsing (-1 for preamble)
// Scanner data:
int mostRecentToken; // Most recent token seen by the scanner
int previous_token;
TParseContext& parseContext;
// Get the next token from *stack* of input sources, popping input sources
// that are out of tokens, down until an input sources is found that has a token.
// Return EOF when there are no more tokens to be found by doing this.
int scanToken(TPpToken* ppToken)
{
int token = EOF;
while (! inputStack.empty()) {
token = inputStack.back()->scan(ppToken);
if (token != tInput::endOfInput)
break;
popInput();
}
if (token == tInput::endOfInput)
return EOF;
return token;
}
int getChar() { return inputStack.back()->getch(); }
void ungetChar() { inputStack.back()->ungetch(); }
static const int maxMacroArgs = 64;
static const int maxIfNesting = 64;
@ -196,18 +234,47 @@ protected:
int elsetracker; // #if-#else and #endif constructs...Counter.
const char *ErrMsg;
struct MacroInputSrc : public InputSrc {
MacroInputSrc() : mac(0) { }
virtual ~MacroInputSrc()
class tMacroInput : public tInput {
public:
tMacroInput(TPpContext* pp) : tInput(pp) { }
virtual ~tMacroInput()
{
for (size_t i = 0; i < args.size(); ++i)
delete args[i];
}
virtual int scan(TPpToken*);
virtual int getch() { assert(0); return endOfInput; }
virtual void ungetch() { assert(0); }
MacroSymbol *mac;
TVector<TokenStream*> args;
};
InputSrc *currentInput;
class tMarkerInput : public tInput {
public:
tMarkerInput(TPpContext* pp) : tInput(pp) { }
virtual int scan(TPpToken*)
{
if (done)
return endOfInput;
done = true;
return marker;
}
virtual int getch() { assert(0); return endOfInput; }
virtual void ungetch() { assert(0); }
static const int marker = -3;
};
class tZeroInput : public tInput {
public:
tZeroInput(TPpContext* pp) : tInput(pp) { }
virtual int scan(TPpToken*);
virtual int getch() { assert(0); return endOfInput; }
virtual void ungetch() { assert(0); }
};
std::vector<tInput*> inputStack;
bool errorOnVersion;
bool versionSeen;
@ -256,12 +323,8 @@ protected:
int CPPversion(TPpToken * ppToken);
int CPPextension(TPpToken * ppToken);
int readCPPline(TPpToken * ppToken);
void PushEofSrc();
void PopEofSrc();
TokenStream* PrescanMacroArg(TokenStream *a, TPpToken * ppToken);
static int macro_scan(TPpContext* pp, InputSrc *inInput, TPpToken * ppToken);
static int zero_scan(TPpContext* pp, InputSrc *inInput, TPpToken * ppToken);
int MacroExpand(int atom, TPpToken* ppToken, bool expandUndef);
TokenStream* PrescanMacroArg(TokenStream *a, TPpToken * ppToken, bool newLineOkay);
int MacroExpand(int atom, TPpToken* ppToken, bool expandUndef, bool newLineOkay);
//
// from PpSymbols.cpp
@ -278,32 +341,49 @@ protected:
void RecordToken(TokenStream* pTok, int token, TPpToken* ppToken);
void RewindTokenStream(TokenStream *pTok);
int ReadToken(TokenStream* pTok, TPpToken* ppToken);
int ReadFromTokenStream(TokenStream *ts, int name, int (*final)(TPpContext *));
void pushTokenStreamInput(TokenStream *ts, int name);
void UngetToken(int token, TPpToken* ppToken);
struct TokenInputSrc : public InputSrc {
class tTokenInput : public tInput {
public:
tTokenInput(TPpContext* pp, TokenStream* t) : tInput(pp), tokens(t) { }
virtual int scan(TPpToken *);
virtual int getch() { assert(0); return endOfInput; }
virtual void ungetch() { assert(0); }
protected:
TokenStream *tokens;
int (*final)(TPpContext *);
};
static int scan_token(TPpContext*, TokenInputSrc *in, TPpToken * ppToken);
struct UngotToken : public InputSrc {
class tUngotTokenInput : public tInput {
public:
tUngotTokenInput(TPpContext* pp, int t, TPpToken* p) : tInput(pp), token(t), lval(*p) { }
virtual int scan(TPpToken *);
virtual int getch() { assert(0); return endOfInput; }
virtual void ungetch() { assert(0); }
protected:
int token;
TPpToken lval;
};
static int reget_token(TPpContext *, UngotToken *t, TPpToken * ppToken);
//
// From PpScanner.cpp
//
struct StringInputSrc : public InputSrc {
class tStringInput : public tInput {
public:
tStringInput(TPpContext* pp, TInputScanner& i) : tInput(pp), input(&i) { }
virtual int scan(TPpToken *);
virtual int getch();
virtual void ungetch();
protected:
TInputScanner* input;
};
int InitScanner(TPpContext *cpp);
static int sourceGetCh(TPpContext*, StringInputSrc *in);
static void sourceUngetCh(TPpContext*, StringInputSrc *in, int ch, TPpToken *type);
int ScanFromString(char *s);
bool check_EOF(int token);
void missingEndifCheck();
int lFloatConst(char *str, int len, int ch, TPpToken * ppToken);
static int sourceScan(TPpContext*, InputSrc *in, TPpToken * ppToken);
bool inComment;
//
// From PpAtom.cpp

30
glslang/MachineIndependent/preprocessor/PpMemory.cpp
View File

@ -75,7 +75,7 @@ NVIDIA SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT,
TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF
NVIDIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\****************************************************************************/
//
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
@ -93,13 +93,6 @@ struct chunk {
struct chunk *next;
};
struct cleanup {
struct cleanup *next;
void (*fn)(void *, void *);
void *arg1;
void *arg2;
};
TPpContext::MemoryPool* TPpContext::mem_CreatePool(size_t chunksize, unsigned int align)
{
MemoryPool *pool;
@ -122,18 +115,14 @@ TPpContext::MemoryPool* TPpContext::mem_CreatePool(size_t chunksize, unsigned in
pool->alignmask = (uintptr_t)(align) - 1;
pool->free = ((uintptr_t)(pool + 1) + pool->alignmask) & ~pool->alignmask;
pool->end = (uintptr_t)pool + chunksize;
pool->cleanup = 0;
return pool;
}
void TPpContext::mem_FreePool(MemoryPool *pool)
{
struct cleanup *cleanup;
struct chunk *p, *next;
for (cleanup = pool->cleanup; cleanup; cleanup = cleanup->next) {
cleanup->fn(cleanup->arg1, cleanup->arg2);
}
for (p = (struct chunk *)pool; p; p = next) {
next = p->next;
free(p);
@ -168,19 +157,4 @@ void* TPpContext::mem_Alloc(MemoryPool *pool, size_t size)
return rv;
}
int TPpContext::mem_AddCleanup(MemoryPool *pool, void (*fn)(void *, void*), void* arg1, void* arg2)
{
struct cleanup *cleanup;
pool->free = (pool->free + sizeof(void *) - 1) & ~(sizeof(void *)-1);
cleanup = (struct cleanup *)(mem_Alloc(pool, sizeof(struct cleanup)));
if (!cleanup) return -1;
cleanup->next = pool->cleanup;
cleanup->fn = fn;
cleanup->arg1 = arg1;
cleanup->arg2 = arg2;
pool->cleanup = cleanup;
return 0;
}
} // end namespace glslang

319
glslang/MachineIndependent/preprocessor/PpScanner.cpp
View File

@ -98,28 +98,11 @@ int TPpContext::InitScanner(TPpContext *cpp)
if (!InitCPP())
return 0;
mostRecentToken = 0;
currentInput = 0;
previous_token = '\n';
return 1;
}
int TPpContext::sourceGetCh(TPpContext* pp, StringInputSrc *in)
{
int ch = in->input->get();
if (ch == EOF)
delete in;
return ch;
}
void TPpContext::sourceUngetCh(TPpContext* pp, StringInputSrc *in, int ch, TPpToken *type)
{
in->input->unget();
}
///////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////// Floating point constants: /////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////
@ -144,7 +127,7 @@ int TPpContext::lFloatConst(char* str, int len, int ch, TPpToken* ppToken)
if (ch == '.') {
HasDecimalOrExponent = true;
str[len++]=ch;
ch = currentInput->getch(this, currentInput, ppToken);
ch = getChar();
while (ch >= '0' && ch <= '9') {
if (len < TPpToken::maxTokenLength) {
declen++;
@ -152,7 +135,7 @@ int TPpContext::lFloatConst(char* str, int len, int ch, TPpToken* ppToken)
str[len] = ch;
len++;str_len++;
}
ch = currentInput->getch(this, currentInput, ppToken);
ch = getChar();
} else {
parseContext.error(ppToken->loc, "float literal too long", "", "");
len = 1,str_len=1;
@ -170,21 +153,21 @@ int TPpContext::lFloatConst(char* str, int len, int ch, TPpToken* ppToken)
} else {
ExpSign = 1;
str[len++]=ch;
ch = currentInput->getch(this, currentInput, ppToken);
ch = getChar();
if (ch == '+') {
str[len++]=ch;
ch = currentInput->getch(this, currentInput, ppToken);
ch = getChar();
} else if (ch == '-') {
ExpSign = -1;
str[len++]=ch;
ch = currentInput->getch(this, currentInput, ppToken);
ch = getChar();
}
if (ch >= '0' && ch <= '9') {
while (ch >= '0' && ch <= '9') {
if (len < TPpToken::maxTokenLength) {
exp = exp*10 + ch - '0';
str[len++]=ch;
ch = currentInput->getch(this, currentInput, ppToken);
ch = getChar();
} else {
parseContext.error(ppToken->loc, "float literal too long", "", "");
len = 1,str_len=1;
@ -205,10 +188,10 @@ int TPpContext::lFloatConst(char* str, int len, int ch, TPpToken* ppToken)
parseContext.doubleCheck(ppToken->loc, "double floating-point suffix");
if (! HasDecimalOrExponent)
parseContext.error(ppToken->loc, "float literal needs a decimal point or exponent", "", "");
int ch2 = currentInput->getch(this, currentInput, ppToken);
int ch2 = getChar();
if (ch2 != 'f' && ch2 != 'F') {
currentInput->ungetch(this, currentInput, ch2, ppToken);
currentInput->ungetch(this, currentInput, ch, ppToken);
ungetChar();
ungetChar();
} else {
if (len < TPpToken::maxTokenLength) {
str[len++] = ch;
@ -231,7 +214,7 @@ int TPpContext::lFloatConst(char* str, int len, int ch, TPpToken* ppToken)
len = 1,str_len=1;
}
} else
currentInput->ungetch(this, currentInput, ch, ppToken);
ungetChar();
str[len]='\0';
@ -249,7 +232,7 @@ int TPpContext::lFloatConst(char* str, int len, int ch, TPpToken* ppToken)
//
// Scanner used to tokenize source stream.
//
int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
int TPpContext::tStringInput::scan(TPpToken* ppToken)
{
char tokenText[TPpToken::maxTokenLength + 1];
int AlreadyComplained = 0;
@ -258,18 +241,22 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
ppToken->ival = 0;
ppToken->space = false;
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
for (;;) {
while (ch == ' ' || ch == '\t' || ch == '\r') {
while (ch == ' ' || ch == '\t') {
ppToken->space = true;
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
}
ppToken->loc = pp->parseContext.getCurrentLoc();
len = 0;
switch (ch) {
default:
return ch; // Single character token
return ch; // Single character token, including '\' (escaped newlines are handled at a lower level, so this is just a '\' token)
case EOF:
return endOfInput;
case 'A': case 'B': case 'C': case 'D': case 'E':
case 'F': case 'G': case 'H': case 'I': case 'J':
case 'K': case 'L': case 'M': case 'N': case 'O':
@ -281,67 +268,45 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
case 'k': case 'l': case 'm': case 'n': case 'o':
case 'p': case 'q': case 'r': case 's': case 't':
case 'u': case 'v': case 'w': case 'x': case 'y':
case 'z': case '\\':
case 'z':
do {
if (ch == '\\') {
// escaped character
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
if (ch == '\r' || ch == '\n') {
pp->parseContext.lineContinuationCheck(ppToken->loc, false);
int nextch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
if (ch == '\r' && nextch == '\n')
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
else
ch = nextch;
} else {
// Not an escaped newline.
// Put back whatever it was
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
// If not in the middle of an identifier, the \ is our token
if (len == 0)
return '\\';
// Otherwise, put back the \ character, leave it for the next call
ch = '\\'; // for the upcoming unget(...ch...);
break;
}
} else if (len < TPpToken::maxTokenLength) {
if (len < TPpToken::maxTokenLength) {
tokenText[len++] = ch;
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
} else {
if (! AlreadyComplained) {
pp->parseContext.error(ppToken->loc, "name too long", "", "");
AlreadyComplained = 1;
}
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
}
} while ((ch >= 'a' && ch <= 'z') ||
(ch >= 'A' && ch <= 'Z') ||
(ch >= '0' && ch <= '9') ||
ch == '_' ||
ch == '\\');
ch == '_');
// line continuation with no token before or after makes len == 0, and need to start over skipping white space, etc.
if (len == 0)
continue;
tokenText[len] = '\0';
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
ppToken->atom = pp->LookUpAddString(tokenText);
return CPP_IDENTIFIER;
case '0':
ppToken->name[len++] = ch;
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == 'x' || ch == 'X') {
// must be hexidecimal
bool isUnsigned = false;
ppToken->name[len++] = ch;
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if ((ch >= '0' && ch <= '9') ||
(ch >= 'A' && ch <= 'F') ||
(ch >= 'a' && ch <= 'f'))
{
(ch >= 'a' && ch <= 'f')) {
ival = 0;
do {
if (ival <= 0x0fffffff) {
@ -362,7 +327,7 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
}
ival = 0xffffffff;
}
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
} while ((ch >= '0' && ch <= '9') ||
(ch >= 'A' && ch <= 'F') ||
(ch >= 'a' && ch <= 'f'));
@ -374,7 +339,7 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
ppToken->name[len++] = ch;
isUnsigned = true;
} else
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
ppToken->name[len] = '\0';
ppToken->ival = (int)ival;
@ -403,7 +368,7 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
ival = (ival << 3) | ii;
} else
octalOverflow = true;
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
}
// could be part of a float...
@ -416,7 +381,7 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
pp->parseContext.error(ppToken->loc, "numeric literal too long", "", "");
AlreadyComplained = 1;
}
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
} while (ch >= '0' && ch <= '9');
}
if (ch == '.' || ch == 'e' || ch == 'f' || ch == 'E' || ch == 'F' || ch == 'l' || ch == 'L')
@ -431,7 +396,7 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
ppToken->name[len++] = ch;
isUnsigned = true;
} else
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
ppToken->name[len] = '\0';
if (octalOverflow)
@ -456,7 +421,7 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
pp->parseContext.error(ppToken->loc, "numeric literal too long", "", "");
AlreadyComplained = 1;
}
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
} while (ch >= '0' && ch <= '9');
if (ch == '.' || ch == 'e' || ch == 'f' || ch == 'E' || ch == 'F' || ch == 'l' || ch == 'L') {
return pp->lFloatConst(ppToken->name, len, ch, ppToken);
@ -469,7 +434,7 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
ppToken->name[len++] = ch;
uint = 1;
} else
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
ppToken->name[len] = '\0';
ival = 0;
@ -491,112 +456,112 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
}
break;
case '-':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '-') {
return CPP_DEC_OP;
} else if (ch == '=') {
return CPP_SUB_ASSIGN;
} else {
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '-';
}
case '+':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '+') {
return CPP_INC_OP;
} else if (ch == '=') {
return CPP_ADD_ASSIGN;
} else {
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '+';
}
case '*':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '=') {
return CPP_MUL_ASSIGN;
} else {
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '*';
}
case '%':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '=') {
return CPP_MOD_ASSIGN;
} else if (ch == '>'){
return CPP_RIGHT_BRACE;
} else {
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '%';
}
case ':':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '>') {
return CPP_RIGHT_BRACKET;
} else {
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return ':';
}
case '^':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '^') {
return CPP_XOR_OP;
} else {
if (ch == '=')
return CPP_XOR_ASSIGN;
else{
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '^';
}
}
case '=':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '=') {
return CPP_EQ_OP;
} else {
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '=';
}
case '!':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '=') {
return CPP_NE_OP;
} else {
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '!';
}
case '|':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '|') {
return CPP_OR_OP;
} else {
if (ch == '=')
return CPP_OR_ASSIGN;
else{
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '|';
}
}
case '&':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '&') {
return CPP_AND_OP;
} else {
if (ch == '=')
return CPP_AND_ASSIGN;
else{
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '&';
}
}
case '<':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '<') {
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '=')
return CPP_LEFT_ASSIGN;
else{
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return CPP_LEFT_OP;
}
} else {
@ -608,78 +573,66 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
else if (ch == ':')
return CPP_LEFT_BRACKET;
else{
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '<';
}
}
}
case '>':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '>') {
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '=')
return CPP_RIGHT_ASSIGN;
else{
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return CPP_RIGHT_OP;
}
} else {
if (ch == '=') {
return CPP_GE_OP;
} else {
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '>';
}
}
case '.':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch >= '0' && ch <= '9') {
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return pp->lFloatConst(ppToken->name, 0, '.', ppToken);
} else {
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '.';
}
case '/':
// TODO: preprocessor simplification: use the Scan.cpp comment scanner
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == '/') {
pp->inComment = true;
do {
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
if (ch == '\\') {
// allow an escaped newline, otherwise escapes in comments are meaningless
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
if (ch == '\r' || ch == '\n') {
if (! pp->parseContext.lineContinuationCheck(ppToken->loc, true))
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
else {
int nextch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
if (ch == '\r' && nextch == '\n')
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
else
ch = nextch;
}
}
}
ch = pp->getChar();
} while (ch != '\n' && ch != EOF);
ppToken->space = true;
pp->inComment = false;
if (ch == EOF)
return endOfInput;
return ch;
} else if (ch == '*') {
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
do {
while (ch != '*') {
if (ch == EOF) {
pp->parseContext.error(ppToken->loc, "EOF in comment", "comment", "");
return EOF;
return endOfInput;
}
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
}
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
if (ch == EOF) {
pp->parseContext.error(ppToken->loc, "EOF in comment", "comment", "");
return EOF;
return endOfInput;
}
} while (ch != '/');
ppToken->space = true;
@ -688,23 +641,17 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
} else if (ch == '=') {
return CPP_DIV_ASSIGN;
} else {
pp->currentInput->ungetch(pp, pp->currentInput, ch, ppToken);
pp->ungetChar();
return '/';
}
break;
case '"':
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
while (ch != '"' && ch != '\n' && ch != EOF) {
if (ch == '\\') {
pp->parseContext.lineContinuationCheck(ppToken->loc, false);
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
if (ch == '\n' || ch == '\r' || ch == EOF)
break;
}
if (len < TPpToken::maxTokenLength) {
tokenText[len] = ch;
len++;
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
} else
break;
};
@ -718,10 +665,84 @@ int TPpContext::sourceScan(TPpContext* pp, InputSrc*, TPpToken* ppToken)
}
}
ch = pp->currentInput->getch(pp, pp->currentInput, ppToken);
ch = pp->getChar();
}
}
//
// Scanner used to get source stream characters.
// - Escaped newlines are handled here, invisibly to the caller.
// - All forms of newline are handled, and turned into just a '\n'.
//
int TPpContext::tStringInput::getch()
{
int ch = input->get();
if (ch == '\\') {
// Move past escaped newlines, as many as sequentially exist
do {
if (input->peek() == '\r' || input->peek() == '\n') {
bool allowed = pp->parseContext.lineContinuationCheck(input->getSourceLoc(), pp->inComment);
if (! allowed && pp->inComment)
return '\\';
// escape one newline now
ch = input->get();
int nextch = input->get();
if (ch == '\r' && nextch == '\n')
ch = input->get();
else
ch = nextch;
} else
return '\\';
} while (ch == '\\');
}
// handle any non-escaped newline
if (ch == '\r' || ch == '\n') {
if (ch == '\r' && input->peek() == '\n')
ch = input->get();
return '\n';
}
return ch;
}
//
// Scanner used to backup the source stream characters. Newlines are
// handled here, invisibly to the caller, meaning have to undo exactly
// what getch() above does (e.g., don't leave things in the middle of a
// sequence of escaped newlines).
//
void TPpContext::tStringInput::ungetch()
{
input->unget();
do {
int ch = input->peek();
if (ch == '\r' || ch == '\n') {
if (ch == '\n') {
// correct for two-character newline
input->unget();
if (input->peek() != '\r')
input->get();
}
// now in front of a complete newline, move past an escape character
input->unget();
if (input->peek() == '\\')
input->unget();
else {
input->get();
break;
}
} else
break;
} while (true);
}
//
// The main functional entry-point into the preprocessor, which will
// scan the source strings to figure out and return the next processing token.
//
// Return string pointer to next token.
// Return 0 when no more tokens.
@ -732,15 +753,19 @@ const char* TPpContext::tokenize(TPpToken* ppToken)
for(;;) {
const char* tokenString = 0;
token = currentInput->scan(this, currentInput, ppToken);
token = scanToken(ppToken);
ppToken->token = token;
if (check_EOF(token))
if (token == EOF) {
missingEndifCheck();
return 0;
}
if (token == '#') {
if (previous_token == '\n' || previous_token == 0) {
if (previous_token == '\n') {
token = readCPPline(ppToken);
if (check_EOF(token))
if (token == EOF) {
missingEndifCheck();
return 0;
}
continue;
} else {
parseContext.error(ppToken->loc, "preprocessor directive cannot be preceded by another token", "#", "");
@ -753,7 +778,7 @@ const char* TPpContext::tokenize(TPpToken* ppToken)
continue;
// expand macros
if (token == CPP_IDENTIFIER && MacroExpand(ppToken->atom, ppToken, false) == 1)
if (token == CPP_IDENTIFIER && MacroExpand(ppToken->atom, ppToken, false, true) != 0)
continue;
if (token == CPP_IDENTIFIER)
@ -779,17 +804,11 @@ const char* TPpContext::tokenize(TPpToken* ppToken)
}
}
//Checks if the token just read is EOF or not.
bool TPpContext::check_EOF(int token)
// Checks if we've seen balanced #if...#endif
void TPpContext::missingEndifCheck()
{
if (token == EOF) {
if (ifdepth > 0)
parseContext.error(parseContext.getCurrentLoc(), "missing #endif", "", "");
return true;
}
return false;
}
} // end namespace glslang

63
glslang/MachineIndependent/preprocessor/PpTokens.cpp
View File

@ -109,7 +109,7 @@ int TPpContext::lReadByte(TokenStream *pTok)
if (pTok->current < pTok->data.size())
return pTok->data[pTok->current++];
else
return -1;
return tInput::endOfInput;
}
/*
@ -124,6 +124,7 @@ void TPpContext::RecordToken(TokenStream *pTok, int token, TPpToken* ppToken)
lAddByte(pTok, (unsigned char)((token & 0x7f) + 0x80));
else
lAddByte(pTok, (unsigned char)(token & 0x7f));
switch (token) {
case CPP_IDENTIFIER:
case CPP_STRCONSTANT:
@ -154,11 +155,6 @@ void TPpContext::RecordToken(TokenStream *pTok, int token, TPpToken* ppToken)
void TPpContext::RewindTokenStream(TokenStream *pTok)
{
pTok->current = 0;
//if (pTok->head) {
// pTok->current = pTok->head;
// pTok->current->current = 0;
//}
}
/*
@ -172,7 +168,6 @@ int TPpContext::ReadToken(TokenStream *pTok, TPpToken *ppToken)
ltoken = lReadByte(pTok);
ppToken->loc = parseContext.getCurrentLoc();
if (ltoken >= 0) {
if (ltoken > 127)
ltoken += 128;
switch (ltoken) {
@ -219,58 +214,36 @@ int TPpContext::ReadToken(TokenStream *pTok, TPpToken *ppToken)
break;
}
}
return ltoken;
}
return EOF;
int TPpContext::tTokenInput::scan(TPpToken* ppToken)
{
return pp->ReadToken(tokens, ppToken);
}
int TPpContext::scan_token(TPpContext* pp, TokenInputSrc *in, TPpToken * ppToken)
void TPpContext::pushTokenStreamInput(TokenStream* ts, int name)
{
int token = pp->ReadToken(in->tokens, ppToken);
int (*final)(TPpContext *);
if (token > 0)
return token;
pp->currentInput = in->prev;
final = in->final;
delete in;
if (final && !final(pp))
return -1;
return pp->currentInput->scan(pp, pp->currentInput, ppToken);
}
int TPpContext::ReadFromTokenStream(TokenStream *ts, int name, int (*final)(TPpContext *))
{
TokenInputSrc* in = new TokenInputSrc;
in->prev = currentInput;
in->scan = (int (*)(TPpContext*, InputSrc*, TPpToken*))scan_token;
in->tokens = ts;
in->final = final;
pushInput(new tTokenInput(this, ts));
RewindTokenStream(ts);
currentInput = in;
return 1;
}
int TPpContext::reget_token(TPpContext* pp, UngotToken *t, TPpToken * ppToken)
int TPpContext::tUngotTokenInput::scan(TPpToken* ppToken)
{
int token = t->token;
*ppToken = t->lval;
pp->currentInput = t->prev;
delete t;
if (done)
return endOfInput;
return token;
int ret = token;
*ppToken = lval;
done = true;
return ret;
}
void TPpContext::UngetToken(int token, TPpToken* ppToken)
{
UngotToken *t = new UngotToken;
t->token = token;
t->lval = *ppToken;
t->scan = (int(*)(TPpContext*, struct InputSrc *, TPpToken *))reget_token;
t->prev = currentInput;
currentInput = t;
pushInput(new tUngotTokenInput(this, token, ppToken));
}
} // end namespace glslang