Push_Parse_Text - Texas Instruments TI-89 Developer's Manual

Appendix A: System Routines — Token Operations

push_parse_text

Declaration: Boolean push_parse_text (unsigned char * cp )
Category(ies): Token Operations
Description: The tokenization routine that creates external tokenized form from text
input.
cp — Points to a null terminated text string.
Inputs:
Outputs: Pushes the external tokenized form of the input onto the expression stack.
Returns TRUE when the input represents a single algebraic expression.
Returns FALSE when the input contains a § operation, any command,
or any statement separator indicating more than one statement is
represented.
Assumptions: None
Side Effects: May expand expression stack and may cause heap compression.
Availability: On AMS 1.05 and higher.
TI-89 / TI-92 Plus
Differences: None
See Also: NG_tokenize
Example:
/* Given the text string "x + y", push the external tokenized form of the expression
(X_VAR_TAG Y_VAR_TAG ADD_TAG) onto the expression stack. */
unsigned char expression[] = "x + y";
(void) push_parse_text (expression);
TI-89 / TI-92 Plus Developer Guide Not for Distribution
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Beta Version January 26, 2001