diff options
Diffstat (limited to 'kxsldbg/kxsldbgpart/libxsldbg/debug.cpp')
| -rw-r--r-- | kxsldbg/kxsldbgpart/libxsldbg/debug.cpp | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/kxsldbg/kxsldbgpart/libxsldbg/debug.cpp b/kxsldbg/kxsldbgpart/libxsldbg/debug.cpp new file mode 100644 index 00000000..2975f814 --- /dev/null +++ b/kxsldbg/kxsldbgpart/libxsldbg/debug.cpp @@ -0,0 +1,235 @@ + +/*************************************************************************** + debug.c - main functions for debugger use + ------------------- + begin : Fri Nov 2 2001 + copyright : (C) 2001 by Keith Isdale + email : k_isdale@tpg.com.au + ***************************************************************************/ + +#include "xsldbg.h" +#include "debug.h" +#include "debugXSL.h" /* needed for debugXSLBreak function */ +#include "breakpoint.h" +#include "callstack.h" +#include "files.h" +#include "options.h" + +#include <libxslt/xsltutils.h> /* need for breakpoint callback support */ + +/* setup debugger callbacks */ +struct DebuggerCallbacks { + xsltHandleDebuggerCallback debuggercallback; + xsltAddCallCallback addcallback; + xsltDropCallCallback dropcallback; +} debuggerDriver; + + +/* ----------------------------------------- + Private functions + -------------------------------------------*/ + +/** + * debugHandleDebugger: + * @cur : source node being executed + * @node : data node being processed + * @templ : temlate that applies to node + * @ctxt : the xslt transform context + * + * If either cur or node are a breakpoint, or xslDebugStatus in state + * where debugging must occcur at this time, then transfer control + * to the debugXSLBreak function + */ +void debugHandleDebugger(xmlNodePtr cur, xmlNodePtr node, + xsltTemplatePtr templ, + xsltTransformContextPtr ctxt); + +/* ------------------------------------- + End private functions +---------------------------------------*/ + + +/*----------------------------------------------------------- + Main debugger functions +-----------------------------------------------------------*/ + + + +/** + * debugInit : + * + * Initialize debugger + * Returns 1 on success, + * 0 otherwise + */ +int +debugInit(void) +{ + int result; + + xslDebugStatus = DEBUG_NONE; + result = breakPointInit(); + result = result && callStackInit(); + + /* setup debugger callbacks */ + debuggerDriver.debuggercallback = debugHandleDebugger; + debuggerDriver.addcallback = callStackAdd; + debuggerDriver.dropcallback = callStackDrop; + xsltSetDebuggerCallbacks(3, &debuggerDriver); + return result; +} + + +/** + * debugFree : + * + * Free up any memory taken by debugging + */ +void +debugFree(void) +{ + breakPointFree(); + callStackFree(); +} + + +/** + * debugGotControl: + * @reached: 1 if debugger has received control, -1 to read its value, + 0 to clear the flag + * + * Set flag that debugger has received control to value of @reached + * + * Returns 1 if any break point was reached previously, + * 0 otherwise + */ +int +debugGotControl(int reached) +{ + static int hasReached; + int result = hasReached; + + if (reached != -1) + hasReached = reached; + return result; +} + + +/** + * debugHandleDebugger: + * @cur : source node being executed + * @node : data node being processed + * @templ : temlate that applies to node + * @ctxt : the xslt transform context + * + * If either cur or node are a breakpoint, or xslDebugStatus in state + * where debugging must occcur at this time then transfer control + * to the debugXSLBreak function + */ +void +debugHandleDebugger(xmlNodePtr cur, xmlNodePtr node, + xsltTemplatePtr templ, xsltTransformContextPtr ctxt) +{ + + if (!cur && !node) { + xsldbgGenericErrorFunc(i18n("Error: XSLT source and XML data are empty. Cannot enter the debugger.\n")); + } else { + if (optionsGetIntOption(OPTIONS_GDB)){ + int doValidation = 0; + switch(xsldbgValidateBreakpoints){ + case BREAKPOINTS_ARE_VALID: + if (!filesGetStylesheet() || !filesGetMainDoc()) { + xsldbgValidateBreakpoints = BREAKPOINTS_NEED_VALIDATION; + doValidation = 1; + } + + break; + + case BREAKPOINTS_NEED_VALIDATION: + if (filesGetStylesheet() && filesGetMainDoc() && templ){ + xsldbgValidateBreakpoints = BREAKPOINTS_BEING_VALIDATED; + doValidation = 1; + } + break; + + case BREAKPOINTS_BEING_VALIDATED: + /*should never be in the state for any length of time */ +#ifdef WITH_XSLDBG_DEBUG_BREAKPOINTS + xsltGenericError(xsltGenericErrorContext, + "Error: Unexpected breakpoint validation state %d", xsldbgValidateBreakpoints); +#endif + break; + } + if (doValidation){ + /* breakpoints will either be marked as orphaned or not as needed */ + xsldbgValidateBreakpoints = BREAKPOINTS_BEING_VALIDATED; + walkBreakPoints((xmlHashScanner) + xslDbgShellValidateBreakPoint, ctxt); + if (filesGetStylesheet() && filesGetMainDoc() && templ){ + xsldbgValidateBreakpoints = BREAKPOINTS_ARE_VALID; + }else{ + xsldbgValidateBreakpoints = BREAKPOINTS_NEED_VALIDATION; + } + } + } + switch (xslDebugStatus) { + + /* A temparary stopping point */ + case DEBUG_WALK: + case DEBUG_TRACE: + /* only allow breakpoints at xml elements */ + if (xmlGetLineNo(cur) != -1) + debugXSLBreak(cur, node, templ, ctxt); + break; + + case DEBUG_STOP: + xslDebugStatus = DEBUG_CONT; + /* only allow breakpoints at xml elements */ + if (xmlGetLineNo(cur) != -1) + debugXSLBreak(cur, node, templ, ctxt); + break; + + case DEBUG_STEP: + /* only allow breakpoints at xml elements */ + if (xmlGetLineNo(cur) != -1) + debugXSLBreak(cur, node, templ, ctxt); + break; + + case DEBUG_CONT: + { + breakPointPtr breakPtr = NULL; + xmlChar *baseUri = NULL; + + if (cur) { + breakPtr = + breakPointGet(cur->doc->URL, + xmlGetLineNo(cur)); + + if (breakPtr && (breakPtr->flags & BREAKPOINT_ENABLED) ){ + debugXSLBreak(cur, node, templ, ctxt); + return; + } + } + if (node) { + baseUri = filesGetBaseUri(node); + if (baseUri != NULL) { + breakPtr = + breakPointGet(baseUri, xmlGetLineNo(node)); + } else { + breakPtr = + breakPointGet(node->doc->URL, + xmlGetLineNo(node)); + } + if (breakPtr) { + if (breakPtr->flags & BREAKPOINT_ENABLED) { + debugXSLBreak(cur, node, templ, ctxt); + } + } + if (baseUri) + xmlFree(baseUri); + } + } + break; + } + } +} |