Callbacks.c File Reference

Demonstrates writing and calling callback functions. More...

#include "main.h"
#include "CallbacksGrammar.h"

Go to the source code of this file.

Data Structures
struct	PARSER_CALLBACK_DATA
	user data passed to the Parser More...
struct	AST_CALLBACK_DATA
	user data passed to the AST translator More...

Functions
apg_uint	uiSemiComment (APG_CBDATA *spData)
apg_uint	uiCppComment (APG_CBDATA *spData)
apg_uint	uiCComment (APG_CBDATA *spData)
apg_uint	uiHexNum (APG_CBDATA *spData)
apg_uint	uiLineEnd (APG_CBDATA *spData)
apg_uint	uiBlankLine (APG_CBDATA *spData)
apg_uint	uiUDT_u_LineError (APG_CBDATA *spData)
void	vIndent (FILE *spOut, apg_uint uiIndent)
apg_uint	uiFileParser (APG_CBDATA *spData)
apg_uint	uiFileAst (APG_CBDATA *spData)
apg_uint	uiDecNum (APG_CBDATA *spData)
void	vDemoCallbacks ()

Detailed Description

Demonstrates writing and calling callback functions.

Definition in file Callbacks.c.

Function Documentation

uiBlankLine()

apg_uint uiBlankLine

(

APG_CBDATA *

spData

)

Callback function for the BlankLine rule. Used only for syntax analysis.

Parameters

spData

the callback data passed to the function by the Parser

Returns

ignored by Parser

Definition at line 298 of file Callbacks.c.

uiCComment()

apg_uint uiCComment

(

APG_CBDATA *

spData

)

Syntax callback function for the CComment rule.

Parameters

spData

the callback data passed to the function by the Parser

Returns

ignored by Parser

Definition at line 198 of file Callbacks.c.

uiCppComment()

apg_uint uiCppComment

(

APG_CBDATA *

spData

)

Syntax callback function for the CppComment rule.

Parameters

spData

the callback data passed to the function by the Parser

Returns

ignored by Parser

Definition at line 182 of file Callbacks.c.

uiDecNum()

apg_uint uiDecNum

(

APG_CBDATA *

spData

)

Callback function for the Decnum rule. Used only for semantic analysis.

Parameters

spData

the callback data passed to the function by the Parser

Returns

ignored by Parser

Definition at line 257 of file Callbacks.c.

uiFileAst()

apg_uint uiFileAst

(

APG_CBDATA *

spData

)

Semantic callback function for the File rule.

Parameters

spData

the callback data passed to the function by the Parser

Returns

ignored by Parser

Definition at line 132 of file Callbacks.c.

uiFileParser()

apg_uint uiFileParser

(

APG_CBDATA *

spData

)

Syntax callback function for the File rule.

Parameters

spData

the callback data passed to the function by the Parser

Returns

ignored by Parser

Definition at line 78 of file Callbacks.c.

uiHexNum()

apg_uint uiHexNum

(

APG_CBDATA *

spData

)

Callback function for the Hexnum rule. Used for both syntax and semantic analysis.

Parameters

spData

the callback data passed to the function by the Parser

Returns

ignored by Parser

Definition at line 214 of file Callbacks.c.

uiLineEnd()

apg_uint uiLineEnd

(

APG_CBDATA *

spData

)

Callback function for the LineEnd rule. Used only for syntax analysis.

Parameters

spData

the callback data passed to the function by the Parser

Returns

ignored by Parser

Definition at line 282 of file Callbacks.c.

uiSemiComment()

apg_uint uiSemiComment

(

APG_CBDATA *

spData

)

Syntax callback function for the SemiComment rule.

Parameters

spData

the callback data passed to the function by the Parser

Returns

ignored by Parser

Definition at line 163 of file Callbacks.c.

uiUDT_u_LineError()

apg_uint uiUDT_u_LineError

(

APG_CBDATA *

spData

)

Callback function for the u_LineError UDT. Used for both syntax and semantic analysis.

Parameters

spData

the callback data passed to the function by the Parser

Returns

ignored by Parser

Definition at line 314 of file Callbacks.c.

vDemoCallbacks()

void vDemoCallbacks

(

)

Demonstrates writing and using rule and UDT callback functions. The test output is written to Callbacks.output.

• parsing
  • adding callback functions to selected rules
  • overriding the syntax semantically
    • pre-branch syntax error detections
    • post-branch semantically overriding the syntax
    • adding the required callback functions for the UDTs defined in the grammar
• Abstract Syntax Tree (AST) translation
  • translating rule AST nodes
  • translating UDT AST nodes
  • using the same callback function for both parsing and AST translation
  • using the different callback functions for parsing and AST translation

Definition at line 391 of file Callbacks.c.

vIndent()

void vIndent	(	FILE *	spOut,
		apg_uint	uiIndent
	)

A simple helper function to print blank spaces for indenting output.

Parameters

spOut	the output device to print on
uiIndent	the number of spaces to indent

Definition at line 70 of file Callbacks.c.