From a2006d9935f97a233f75942e1a3eab69f27cf4b3 Mon Sep 17 00:00:00 2001
From: Jan Breuer <jan.breuer@jaybee.cz>
Date: 周日, 19 4月 2015 17:59:23 +0800
Subject: [PATCH] Update c++ example, make special numbers more correct
---
libscpi/src/lexer.c | 32 ++++++++++++++++++++++----------
1 files changed, 22 insertions(+), 10 deletions(-)
diff --git a/libscpi/src/lexer.c b/libscpi/src/lexer.c
index 349bcc5..c0505cc 100644
--- a/libscpi/src/lexer.c
+++ b/libscpi/src/lexer.c
@@ -297,6 +297,7 @@
}
/* 7.6.1.2 <COMMAND PROGRAM HEADER> */
+
/**
* Skip program mnemonic [a-z][a-z0-9_]*
* @param state
@@ -319,6 +320,7 @@
}
/* tokens */
+
/**
* Detect token white space
* @param state
@@ -342,6 +344,7 @@
}
/* 7.6.1 <COMMAND PROGRAM HEADER> */
+
/**
* Skip command program header \*<PROGRAM MNEMONIC>
* @param state
@@ -424,7 +427,7 @@
}
} else if (res <= SKIP_INCOMPLETE) {
token->type = SCPI_TOKEN_INCOMPLETE_COMPOUND_PROGRAM_HEADER;
- }
+ }
}
if (token->type != SCPI_TOKEN_UNKNOWN) {
@@ -438,6 +441,7 @@
}
/* 7.7.1 <CHARACTER PROGRAM DATA> */
+
/**
* Detect token "Character program data"
* @param state
@@ -502,7 +506,7 @@
* @return
*/
int scpiLex_DecimalNumericProgramData(lex_state_t * state, scpi_token_t * token) {
- const char * rollback;
+ char * rollback;
token->ptr = state->pos;
if (skipMantisa(state)) {
@@ -713,6 +717,7 @@
int arbitraryBlockLength = 0;
const char * ptr = state->pos;
token->ptr = state->pos;
+ int validData = -1;
if (skipChr(state, '#')) {
if (!iseos(state) && isNonzeroDigit(state->pos[0])) {
@@ -732,23 +737,29 @@
if (i == 0) {
state->pos += arbitraryBlockLength;
- if ((state->buffer + state->len) < (state->pos)) {
- token->len = 0;
- } else {
+ if ((state->buffer + state->len) >= (state->pos)) {
token->ptr = state->pos - arbitraryBlockLength;
token->len = arbitraryBlockLength;
+ validData = 1;
}
- } else {
- token->len = 0;
+ } else if (iseos(state)) {
+ validData = 0;
}
- } else {
- token->len = 0;
+ } else if (iseos(state)) {
+ validData = 0;
}
}
- if ((token->len > 0)) {
+ if (validData == 1) {
+ // valid
token->type = SCPI_TOKEN_ARBITRARY_BLOCK_PROGRAM_DATA;
+ } else if (validData == 0) {
+ // incomplete
+ token->type = SCPI_TOKEN_UNKNOWN;
+ token->len = 0;
+ state->pos = state->buffer + state->len;
} else {
+ // invalid
token->type = SCPI_TOKEN_UNKNOWN;
state->pos = token->ptr;
token->len = 0;
@@ -780,6 +791,7 @@
}
// TODO: 7.7.7.2-2 recursive - any program data
+
/**
* Detect token Expression
* @param state
--
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