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precompile expressions

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this gives a rather significant boost, in particular for
expressions which are evaluated repeatedly (includes).
This commit is contained in:
Oswald Buddenhagen
2010-06-01 18:43:11 +02:00
parent 932d77b6dd
commit a1fa00d2e7
4 changed files with 1088 additions and 476 deletions
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67
src/shared/proparser/proitems.h
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@@ -53,6 +53,8 @@ namespace ProStringConstants {
enum OmitPreHashing { NoHash };
}
class ProStringList;
class ProString {
public:
ProString();
@@ -67,6 +69,9 @@ public:
ProString(const QString &str, int offset, int length, ProStringConstants::OmitPreHashing);
QString toQString() const;
QString &toQString(QString &tmp) const;
ProString &operator+=(const ProString &other);
ProString &append(const ProString &other, bool *pending = 0);
ProString &append(const ProStringList &other, bool *pending = 0, bool skipEmpty1st = false);
bool operator==(const ProString &other) const;
bool operator==(const QString &other) const;
bool operator==(const QLatin1String &other) const;
@@ -88,6 +93,7 @@ private:
QString m_string;
int m_offset, m_length;
mutable uint m_hash;
QChar *prepareAppend(int extraLen);
uint updatedHash() const;
friend uint qHash(const ProString &str);
friend QString operator+(const ProString &one, const ProString &two);
@@ -112,35 +118,66 @@ public:
// These token definitions affect both ProFileEvaluator and ProWriter
enum ProToken {
TokTerminator = 0, // end of stream (possibly not included in length; must be zero)
TokLine, // line marker: // +1 (2-nl) to 1st token of each line
TokLine, // line marker:
// - line (1)
TokAssign, // variable = // "A=":2 => 1+4+2=7 (8)
TokAppend, // variable += // "A+=":3 => 1+4+2=7 (8)
TokAppendUnique, // variable *= // "A*=":3 => 1+4+2=7 (8)
TokRemove, // variable -= // "A-=":3 => 1+4+2=7 (8)
TokReplace, // variable ~= // "A~=":3 => 1+4+2=7 (8)
// - variable name: hash (2), length (1), chars (length)
// - expression: length (2), chars (length)
TokCondition, // CONFIG test: // "A":1 => 1+2=3 (4)
// - test name: lenght (1), chars (length)
TokAssign, // variable =
TokAppend, // variable +=
TokAppendUnique, // variable *=
TokRemove, // variable -=
TokReplace, // variable ~=
// previous literal/expansion is a variable manipulation
// - value expression + TokValueTerminator
TokValueTerminator, // assignment value terminator
TokLiteral, // literal string (fully dequoted)
// - length (1)
// - string data (length; unterminated)
TokHashLiteral, // literal string with hash (fully dequoted)
// - hash (2)
// - length (1)
// - string data (length; unterminated)
TokVariable, // qmake variable expansion
// - hash (2)
// - name length (1)
// - name (name length; unterminated)
TokProperty, // qmake property expansion
// - name length (1)
// - name (name length; unterminated)
TokEnvVar, // environment variable expansion
// - name length (1)
// - name (name length; unterminated)
TokFuncName, // replace function expansion
// - hash (2)
// - name length (1)
// - name (name length; unterminated)
// - ((nested expansion + TokArgSeparator)* + nested expansion)?
// - TokFuncTerminator
TokArgSeparator, // function argument separator
TokFuncTerminator, // function argument list terminator
TokCondition, // previous literal/expansion is a conditional
TokTestCall, // previous literal/expansion is a test function call
// - ((nested expansion + TokArgSeparator)* + nested expansion)?
// - TokFuncTerminator
TokNot, // '!' operator
TokAnd, // ':' operator
TokOr, // '|' operator
TokBranch, // branch point: // "X:A=":4 => [5]+1+4+1+1+[7]=19 (20)
TokBranch, // branch point:
// - then block length (2)
// - then block + TokTerminator (then block length)
// - else block length (2)
// - else block + TokTerminator (else block length)
TokForLoop, // for loop: // "for(A,B)":8 => 1+4+3+2+1=11 (12)
TokForLoop, // for loop:
// - variable name: hash (2), length (1), chars (length)
// - expression: length (2), chars (length)
// - expression: length (2), bytes + TokValueTerminator (length)
// - body length (2)
// - body + TokTerminator (body length)
TokTestDef, // test function definition: // "defineTest(A):":14 => 1+4+2+1=8 (9)
TokReplaceDef, // replace function definition: // "defineReplace(A):":17 => 1+4+2+1=8 (9)
TokTestDef, // test function definition:
TokReplaceDef, // replace function definition:
// - function name: hash (2), length (1), chars (length)
// - body length (2)
// - body + TokTerminator (body length)
TokMask = 0xff,
TokQuoted = 0x100, // The expression is quoted => join expanded stringlist
TokNewStr = 0x200 // Next stringlist element
};
class ProFile