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authordkf <donal.k.fellows@manchester.ac.uk>2014-01-21 15:07:59 (GMT)
committerdkf <donal.k.fellows@manchester.ac.uk>2014-01-21 15:07:59 (GMT)
commit61bfac2613d3cc063099ad9e6de3110491b6f5df (patch)
treeedde2684acb69fbdefc4ae76635e5cb9ab149de5 /generic/tclCompCmdsSZ.c
parentab8fd1e3f28322c8d57229cd2e171fea351097af (diff)
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implementation of [yieldto] in bytecode
Diffstat (limited to 'generic/tclCompCmdsSZ.c')
-rw-r--r--generic/tclCompCmdsSZ.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/generic/tclCompCmdsSZ.c b/generic/tclCompCmdsSZ.c
index 0f2790f..5c132b4 100644
--- a/generic/tclCompCmdsSZ.c
+++ b/generic/tclCompCmdsSZ.c
@@ -3447,6 +3447,51 @@ TclCompileYieldCmd(
/*
*----------------------------------------------------------------------
*
+ * TclCompileYieldToCmd --
+ *
+ * Procedure called to compile the "yieldto" command.
+ *
+ * Results:
+ * Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * evaluation to runtime.
+ *
+ * Side effects:
+ * Instructions are added to envPtr to execute the "yieldto" command at
+ * runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileYieldToCmd(
+ Tcl_Interp *interp, /* Used for error reporting. */
+ Tcl_Parse *parsePtr, /* Points to a parse structure for the command
+ * created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
+ CompileEnv *envPtr) /* Holds resulting instructions. */
+{
+ DefineLineInformation; /* TIP #280 */
+ Tcl_Token *tokenPtr = TokenAfter(parsePtr->tokenPtr);
+ int i;
+
+ if (parsePtr->numWords < 2) {
+ return TCL_ERROR;
+ }
+
+ OP( NS_CURRENT);
+ for (i = 1 ; i < parsePtr->numWords ; i++) {
+ CompileWord(envPtr, tokenPtr, interp, i);
+ tokenPtr = TokenAfter(tokenPtr);
+ }
+ OP4( LIST, i);
+ OP( YIELD_TO_INVOKE);
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
* CompileUnaryOpCmd --
*
* Utility routine to compile the unary operator commands.