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Add support for calculated defines to parser (#2463)

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* Add support for calculated defines to parser

* Regenerate parser output
This commit is contained in:
lazaray 2022-05-06 20:23:07 +02:00 • committed by GitHub
parent bbc8d39185
commit aa318674e8
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 156 additions and 19 deletions
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159
parser/raylib_parser.c
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@ -84,7 +84,22 @@
//----------------------------------------------------------------------------------
// Type of parsed define
typedef enum { UNKNOWN = 0, MACRO, GUARD, INT, LONG, FLOAT, DOUBLE, CHAR, STRING, COLOR } DefineType;
typedef enum {
UNKNOWN = 0,
MACRO,
GUARD,
INT,
INT_MATH,
LONG,
LONG_MATH,
FLOAT,
FLOAT_MATH,
DOUBLE,
DOUBLE_MATH,
CHAR,
STRING,
COLOR
} DefineType;
// Define info data
typedef struct DefineInfo {
@ -459,6 +474,124 @@ int main(int argc, char* argv[])
MemoryCopy(defines[defineIndex].desc, &linePtr[commentStart], commentLen);
}
// Parse defines of type UNKNOWN to find calculated numbers
if (defines[defineIndex].type == UNKNOWN)
{
DefineType largestType = UNKNOWN;
bool isMath = true;
char *valuePtr = defines[defineIndex].value;
for (int c = 0; c < TextLength(valuePtr); c++)
{
char ch = valuePtr[c];
// Skip operators and whitespace
if ((ch == '(') ||
(ch == ')') ||
(ch == '+') ||
(ch == '-') ||
(ch == '*') ||
(ch == '/') ||
(ch == ' ') ||
(ch == '\t')) continue;
// Read number operand
else if (isdigit(ch))
{
bool isNumber = true, isFloat = false;
while (!((ch == '(') ||
(ch == ')') ||
(ch == '*') ||
(ch == '/') ||
(ch == ' ') ||
(ch == '\t') ||
(ch == '\0')))
{
if (ch == '.') isFloat = true;
if (!(isdigit(ch) ||
((ch >= 'a') && (ch <= 'f')) ||
((ch >= 'A') && (ch <= 'F')) ||
(ch == 'x') ||
(ch == 'L') ||
(ch == '.') ||
(ch == '+') ||
(ch == '-')))
{
isNumber = false;
break;
}
c++;
ch = valuePtr[c];
}
if (isNumber)
{
// Found a valid number -> update largestType
DefineType numberType;
if (isFloat) numberType = valuePtr[c - 1] == 'f' ? FLOAT_MATH : DOUBLE_MATH;
else numberType = valuePtr[c - 1] == 'L' ? LONG_MATH : INT_MATH;
if (numberType > largestType) largestType = numberType;
}
else
{
isMath = false;
break;
}
}
// Read string operand
else
{
int operandStart = c;
while (!((ch == '\0') ||
(ch == ' ') ||
(ch == '(') ||
(ch == ')') ||
(ch == '+') ||
(ch == '-') ||
(ch == '*') ||
(ch == '/')))
{
c++;
ch = valuePtr[c];
}
int operandEnd = c;
int operandLength = operandEnd - operandStart;
// Search previous defines for operand
bool foundOperand = false;
for (int previousDefineIndex = 0; previousDefineIndex < defineIndex; previousDefineIndex++)
{
if (IsTextEqual(defines[previousDefineIndex].name, &valuePtr[operandStart], operandLength))
{
if ((defines[previousDefineIndex].type >= INT) && (defines[previousDefineIndex].type <= DOUBLE_MATH))
{
// Found operand and it's a number -> update largestType
if (defines[previousDefineIndex].type > largestType) largestType = defines[previousDefineIndex].type;
foundOperand = true;
}
break;
}
}
if (!foundOperand)
{
isMath = false;
break;
}
}
}
if (isMath)
{
// Define is a calculated number -> update type
if (largestType == INT) largestType = INT_MATH;
else if (largestType == LONG) largestType = LONG_MATH;
else if (largestType == FLOAT) largestType = FLOAT_MATH;
else if (largestType == DOUBLE) largestType = DOUBLE_MATH;
defines[defineIndex].type = largestType;
}
}
defineIndex++;
}
defineCount = defineIndex;
@ -1251,16 +1384,20 @@ static const char *StrDefineType(DefineType type)
{
switch (type)
{
case UNKNOWN: return "UNKNOWN";
case GUARD: return "GUARD";
case MACRO: return "MACRO";
case INT: return "INT";
case LONG: return "LONG";
case FLOAT: return "FLOAT";
case DOUBLE: return "DOUBLE";
case CHAR: return "CHAR";
case STRING: return "STRING";
case COLOR: return "COLOR";
case UNKNOWN: return "UNKNOWN";
case GUARD: return "GUARD";
case MACRO: return "MACRO";
case INT: return "INT";
case INT_MATH: return "INT_MATH";
case LONG: return "LONG";
case LONG_MATH: return "LONG_MATH";
case FLOAT: return "FLOAT";
case FLOAT_MATH: return "FLOAT_MATH";
case DOUBLE: return "DOUBLE";
case DOUBLE_MATH: return "DOUBLE_MATH";
case CHAR: return "CHAR";
case STRING: return "STRING";
case COLOR: return "COLOR";
}
return "";
}