The Lexicon component interface.

Collaboration diagram for The Lexicon component interface.:

Files
file	lexicon.c
file	lexicon.h
Defines
#define	IF   "if"
#define	IFDEF   "ifdef"
#define	IFNDEF   "ifndef"
#define	ELSE   "else"
#define	ELIF   "elif"
#define	ENDIF   "endif"
#define	DEFINE   "define"
#define	UNDEF   "undef"
#define	INCLUDE   "include"
#define	PRAGMA   "pragma"
#define	ERROR   "error"
#define	DEFINED   "defined"
#define	BOOLEAN_OR   "||"
#define	BOOLEAN_AND   "&&"
#define	BIT_OR   "|"
#define	BIT_XOR   "^"
#define	BIT_AND   "&"
#define	EQ   "=="
#define	NEQ   "!="
#define	LE   "<="
#define	GE   ">="
#define	LESS   "<"
#define	GREATER   ">"
#define	LSHIFT   "<<"
#define	RSHIFT   ">>"
#define	ADD   "+"
#define	SUBTRACT   "-"
#define	MULTIPLY   "*"
#define	DIV   "/"
#define	MOD   "%"
Functions
bool	match_keyword (char const **ptxt, char const *keyword)
bool	match_op (char const **ptxt, char const *op)

---

Define Documentation

#define ADD   "+"

Constant denoting the addition/plus operators

Definition at line 75 of file lexicon.h.

#define BIT_AND   "&"

Constant denoting the bitwise and operator

Definition at line 66 of file lexicon.h.

#define BIT_OR   "|"

Constant denoting the bitwise inclusive-or operator

Definition at line 64 of file lexicon.h.

#define BIT_XOR   "^"

Constant denoting the bitwise exclusive-or operator

Definition at line 65 of file lexicon.h.

#define BOOLEAN_AND   "&&"

Constant denoting the boolean and operator

Definition at line 63 of file lexicon.h.

#define BOOLEAN_OR   "||"

Constant denoting the boolean inclusive-or operator

Definition at line 62 of file lexicon.h.

#define DEFINE   "define"

Constant denoting the hash-define directive

Definition at line 56 of file lexicon.h.

#define DEFINED   "defined"

Constant denoting the defined operator

Definition at line 61 of file lexicon.h.

#define DIV   "/"

Constant denoting the division operator

Definition at line 78 of file lexicon.h.

#define ELIF   "elif"

Constant denoting the hash-elif directive

Definition at line 54 of file lexicon.h.

#define ELSE   "else"

Constant denoting the hash-else directive

Definition at line 53 of file lexicon.h.

#define ENDIF   "endif"

Constant denoting the hash-endif directive

Definition at line 55 of file lexicon.h.

#define EQ   "=="

Constant denoting the equality operator

Definition at line 67 of file lexicon.h.

#define ERROR   "error"

Constant denoting the hash-error directive

Definition at line 60 of file lexicon.h.

#define GE   ">="

Constant denoting the greater-than-or-equal operator

Definition at line 70 of file lexicon.h.

#define GREATER   ">"

Constant denoting the greater-than operator

Definition at line 72 of file lexicon.h.

#define IF   "if"

Constant denoting the hash-if directive

Definition at line 50 of file lexicon.h.

#define IFDEF   "ifdef"

Constant denoting the hash-ifdef directive

Definition at line 51 of file lexicon.h.

#define IFNDEF   "ifndef"

Constant denoting the hash-ifndef directive

Definition at line 52 of file lexicon.h.

#define INCLUDE   "include"

Constant denoting the hash-include directive

Definition at line 58 of file lexicon.h.

#define LE   "<="

Constant denoting the less-than-or-equal operator

Definition at line 69 of file lexicon.h.

#define LESS   "<"

Constant denoting the less-than operator

Definition at line 71 of file lexicon.h.

#define LSHIFT   "<<"

Constant denoting the left-shift operator

Definition at line 73 of file lexicon.h.

#define MOD   "%"

Constant denoting the modulus operator

Definition at line 79 of file lexicon.h.

#define MULTIPLY   "*"

Constant denoting the multiplication operator

Definition at line 77 of file lexicon.h.

#define NEQ   "!="

Constant denoting the inequality operator

Definition at line 68 of file lexicon.h.

#define PRAGMA   "pragma"

Constant denoting the hash-pragma directive

Definition at line 59 of file lexicon.h.

#define RSHIFT   ">>"

Constant denoting the right-shift operator

Definition at line 74 of file lexicon.h.

#define SUBTRACT   "-"

Constant denoting the subtraction/minus operators

Definition at line 76 of file lexicon.h.

#define UNDEF   "undef"

Constant denoting the hash-undef directive

Definition at line 57 of file lexicon.h.

---

Function Documentation

bool match_keyword	(	char const **	ptxt,
		char const *	keyword
	)

Say whether text in the line-buffer matches a preprocessor keyword

Parameters:

ptxt	On entry, a pointer to an address in the line buffer at which to match the keyword. On return, stores the address of the first byte in the line buffer not consumed in the matched text, if the text is an unambiguous occurrence of the keyword; otherwise unchanged.
keyword	The keyword to be matched.

Returns:

True if the text at *ptxt on entry is an unambiguous occurrence of keyword; else false.

Say whether text in the line-buffer matches a prepprocessor keyword

Parameters:

ptxt	On entry, a pointer to an address in the line buffer at which to match the keyword. On return, stores the address of the first byte in the line buffer not consumed by the in the matched text, if the text is an unambiguous occurrence of the keyword; otherwise unchanged.
keyword	The keyword to be matched.

Returns:

True if the text at *ptxt on entry is an unambiguous occurrence of keyword; else false.

Definition at line 97 of file lexicon.c.

References is_symbol_start_char(), and text_match().

Referenced by eval_unary(), and get_directive_type().

Here is the call graph for this function:

bool match_op	(	char const **	ptxt,
		char const *	op
	)

Say whether a given operator occurs at a given line-buffer position.

Parameters:

ptxt	On entry, pointer to an address in line buffer. On return, if the operator is matched, stores the first line buffer address not consumed by the match; otherwise the entry value is unchanged.
op	Pointer to an operator token to match.

Returns:

true iff the operator token op occurs at position txt

Definition at line 109 of file lexicon.c.

References chew_continuation().

Referenced by eval_table().

Here is the call graph for this function: